Fix calendar visibility preservation during event updates

Prevent hidden calendars from becoming visible when events are modified via drag-and-drop or other update operations. The refresh mechanism was overwriting frontend visibility state with fresh server data that doesn't include visibility settings.

Changes:
- Preserve existing calendar visibility and color settings during refresh_calendar_data
- Maintain smart fallback for saved colors on new calendars
- Ensure calendar visibility state persists across event modifications

This fixes the issue where users would hide calendars, then see them reappear after dragging events.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -4,7 +4,7 @@
 ![Runway Screenshot](sample.png)
 
 >[!WARNING]
->This project was entirely vibe coded. It's my first attempt vibe coding anything, but I just sat down one day and realized this was something I've wanted to build for many years, but would just take way too long. With AI, I've been able to lay out the majority  of the app in one long weekend. So proceed at your own risk, but I actually think the app is pretty solid.
+>This project was entirely vibe coded. It's my first attempt vibe coding anything, but I just sat down one day and realized this was something I've wanted to build for many years, but would just take way too long. With AI, I've been able to lay out the majority  of the app in one long weekend. So proceed at your own risk, but I actually think the app is pretty decent. There are still a lot of places where the AI has implemented some really poor solutions to the problems that I didn't catch, but I've begun using it for my own general use.
 
 A modern CalDAV web client built with Rust WebAssembly.
 

backend/Cargo.toml

@@ -22,6 +22,7 @@ hyper = { version = "1.0", features = ["full"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 chrono = { version = "0.4", features = ["serde"] }
+chrono-tz = "0.8"
 uuid = { version = "1.0", features = ["v4", "serde"] }
 anyhow = "1.0"
 

backend/migrations/006_create_external_calendars_table.sql

@@ -0,0 +1,16 @@
+-- Create external_calendars table
+CREATE TABLE external_calendars (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id INTEGER NOT NULL,
+    name TEXT NOT NULL,
+    url TEXT NOT NULL,
+    color TEXT NOT NULL DEFAULT '#4285f4',
+    is_visible BOOLEAN NOT NULL DEFAULT 1,
+    created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME DEFAULT CURRENT_TIMESTAMP,
+    last_fetched DATETIME,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- Create index for performance
+CREATE INDEX idx_external_calendars_user_id ON external_calendars(user_id);

backend/migrations/007_create_external_calendar_cache_table.sql

@@ -0,0 +1,14 @@
+-- Create external calendar cache table for storing ICS data
+CREATE TABLE external_calendar_cache (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    external_calendar_id INTEGER NOT NULL,
+    ics_data TEXT NOT NULL,
+    cached_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    etag TEXT,
+    FOREIGN KEY (external_calendar_id) REFERENCES external_calendars(id) ON DELETE CASCADE,
+    UNIQUE(external_calendar_id)
+);
+
+-- Index for faster lookups
+CREATE INDEX idx_external_calendar_cache_calendar_id ON external_calendar_cache(external_calendar_id);
+CREATE INDEX idx_external_calendar_cache_cached_at ON external_calendar_cache(cached_at);

backend/src/auth.rs

@@ -39,19 +39,13 @@ impl AuthService {
             request.username.clone(),
             request.password.clone(),
         );
-        println!("📝 Created CalDAV config");
 
         // Test authentication against CalDAV server
         let caldav_client = CalDAVClient::new(caldav_config.clone());
-        println!("🔗 Created CalDAV client, attempting to discover calendars...");
 
         // Try to discover calendars as an authentication test
         match caldav_client.discover_calendars().await {
-            Ok(calendars) => {
-                println!(
-                    "✅ Authentication successful! Found {} calendars",
-                    calendars.len()
-                );
+            Ok(_calendars) => {
                 
                 // Find or create user in database
                 let user_repo = UserRepository::new(&self.db);
@@ -112,6 +106,17 @@ impl AuthService {
         self.decode_token(token)
     }
 
+    /// Get user from token
+    pub async fn get_user_from_token(&self, token: &str) -> Result<crate::db::User, ApiError> {
+        let claims = self.verify_token(token)?;
+        
+        let user_repo = UserRepository::new(&self.db);
+        user_repo
+            .find_or_create(&claims.username, &claims.server_url)
+            .await
+            .map_err(|e| ApiError::Database(format!("Failed to get user: {}", e)))
+    }
+
     /// Create CalDAV config from token
     pub fn caldav_config_from_token(
         &self,

backend/src/calendar.rs

@@ -167,8 +167,6 @@ impl CalDAVClient {
         };
 
         let basic_auth = self.config.get_basic_auth();
-        println!("🔑 REPORT Basic Auth: Basic {}", basic_auth);
-        println!("🌐 REPORT URL: {}", url);
 
         let response = self
             .http_client
@@ -330,13 +328,28 @@ impl CalDAVClient {
         event: ical::parser::ical::component::IcalEvent,
     ) -> Result<CalendarEvent, CalDAVError> {
         let mut properties: HashMap<String, String> = HashMap::new();
+        let mut full_properties: HashMap<String, String> = HashMap::new();
 
         // Extract all properties from the event
         for property in &event.properties {
-            properties.insert(
-                property.name.to_uppercase(),
-                property.value.clone().unwrap_or_default(),
-            );
+            let prop_name = property.name.to_uppercase();
+            let prop_value = property.value.clone().unwrap_or_default();
+            
+            properties.insert(prop_name.clone(), prop_value.clone());
+            
+            // Build full property string with parameters for timezone parsing
+            let mut full_prop = format!("{}", prop_name);
+            if let Some(params) = &property.params {
+                for (param_name, param_values) in params {
+                    if !param_values.is_empty() {
+                        full_prop.push_str(&format!(";{}={}", param_name, param_values.join(",")));
+                    }
+                }
+            }
+            full_prop.push_str(&format!(":{}", prop_value));
+            
+            
+            full_properties.insert(prop_name, full_prop);
         }
 
         // Required UID field
@@ -345,27 +358,30 @@ impl CalDAVClient {
             .ok_or_else(|| CalDAVError::ParseError("Missing UID field".to_string()))?
             .clone();
 
+        // Determine if it's an all-day event FIRST by checking for VALUE=DATE parameter per RFC 5545
+        let empty_string = String::new();
+        let dtstart_raw = full_properties.get("DTSTART").unwrap_or(&empty_string);
+        let dtstart_value = properties.get("DTSTART").unwrap_or(&empty_string);
+        let all_day = dtstart_raw.contains("VALUE=DATE") || (!dtstart_value.contains("T") && dtstart_value.len() == 8);
+        
+
         // Parse start time (required)
-        let start = properties
+        let start_prop = properties
             .get("DTSTART")
             .ok_or_else(|| CalDAVError::ParseError("Missing DTSTART field".to_string()))?;
-        let start = self.parse_datetime(start, properties.get("DTSTART"))?;
+        let (start_naive, start_tzid) = self.parse_datetime_with_tz(start_prop, full_properties.get("DTSTART"))?;
 
         // Parse end time (optional - use start time if not present)
-        let end = if let Some(dtend) = properties.get("DTEND") {
-            Some(self.parse_datetime(dtend, properties.get("DTEND"))?)
+        let (end_naive, end_tzid) = if let Some(dtend) = properties.get("DTEND") {
+            let (end_dt, end_tz) = self.parse_datetime_with_tz(dtend, full_properties.get("DTEND"))?;
+            (Some(end_dt), end_tz)
         } else if let Some(_duration) = properties.get("DURATION") {
             // TODO: Parse duration and add to start time
-            Some(start)
+            (Some(start_naive), start_tzid.clone())
         } else {
-            None
+            (None, None)
         };
 
-        // Determine if it's an all-day event by checking for VALUE=DATE parameter
-        let empty_string = String::new();
-        let dtstart_raw = properties.get("DTSTART").unwrap_or(&empty_string);
-        let all_day = dtstart_raw.contains("VALUE=DATE") || (!dtstart_raw.contains("T") && dtstart_raw.len() == 8);
-
         // Parse status
         let status = properties
             .get("STATUS")
@@ -398,23 +414,35 @@ impl CalDAVClient {
             .map(|s| s.split(',').map(|c| c.trim().to_string()).collect())
             .unwrap_or_default();
 
-        // Parse dates
-        let created = properties
-            .get("CREATED")
-            .and_then(|s| self.parse_datetime(s, None).ok());
+        // Parse dates with timezone information
+        let (created_naive, created_tzid) = if let Some(created_str) = properties.get("CREATED") {
+            match self.parse_datetime_with_tz(created_str, None) {
+                Ok((dt, tz)) => (Some(dt), tz),
+                Err(_) => (None, None)
+            }
+        } else {
+            (None, None)
+        };
         
-        let last_modified = properties
-            .get("LAST-MODIFIED")
-            .and_then(|s| self.parse_datetime(s, None).ok());
+        let (last_modified_naive, last_modified_tzid) = if let Some(modified_str) = properties.get("LAST-MODIFIED") {
+            match self.parse_datetime_with_tz(modified_str, None) {
+                Ok((dt, tz)) => (Some(dt), tz),
+                Err(_) => (None, None)
+            }
+        } else {
+            (None, None)
+        };
 
         // Parse exception dates (EXDATE)
         let exdate = self.parse_exdate(&event);
 
-        // Create VEvent with required fields
-        let mut vevent = VEvent::new(uid, start);
+        // Create VEvent with parsed naive datetime and timezone info
+        let mut vevent = VEvent::new(uid, start_naive);
 
-        // Set optional fields
-        vevent.dtend = end;
+        // Set optional fields with timezone information
+        vevent.dtend = end_naive;
+        vevent.dtstart_tzid = start_tzid;
+        vevent.dtend_tzid = end_tzid;
         vevent.summary = properties.get("SUMMARY").cloned();
         vevent.description = properties.get("DESCRIPTION").cloned();
         vevent.location = properties.get("LOCATION").cloned();
@@ -437,10 +465,13 @@ impl CalDAVClient {
         vevent.attendees = Vec::new();
 
         vevent.categories = categories;
-        vevent.created = created;
-        vevent.last_modified = last_modified;
+        vevent.created = created_naive;
+        vevent.created_tzid = created_tzid;
+        vevent.last_modified = last_modified_naive;
+        vevent.last_modified_tzid = last_modified_tzid;
         vevent.rrule = properties.get("RRULE").cloned();
-        vevent.exdate = exdate;
+        vevent.exdate = exdate.into_iter().map(|dt| dt.naive_utc()).collect();
+        vevent.exdate_tzid = None; // TODO: Parse timezone info for EXDATE
         vevent.all_day = all_day;
 
         // Parse alarms
@@ -553,11 +584,9 @@ impl CalDAVClient {
     pub async fn discover_calendars(&self) -> Result<Vec<String>, CalDAVError> {
         // First, try to discover user calendars if we have a calendar path in config
         if let Some(calendar_path) = &self.config.calendar_path {
-            println!("Using configured calendar path: {}", calendar_path);
             return Ok(vec![calendar_path.clone()]);
         }
 
-        println!("No calendar path configured, discovering calendars...");
 
         // Try different common CalDAV discovery paths
         // Note: paths should be relative to the server URL base
@@ -567,12 +596,28 @@ impl CalDAVClient {
 
         let mut all_calendars = Vec::new();
 
+        let mut has_valid_caldav_response = false;
+
         for path in discovery_paths {
-            println!("Trying discovery path: {}", path);
-            if let Ok(calendars) = self.discover_calendars_at_path(&path).await {
-                println!("Found {} calendar(s) at {}", calendars.len(), path);
+            match self.discover_calendars_at_path(&path).await {
+                Ok(calendars) => {
+                    has_valid_caldav_response = true;
                     all_calendars.extend(calendars);
                 }
+                Err(CalDAVError::ServerError(_status)) => {
+                    // HTTP error - this might be expected for some paths, continue trying
+                }
+                Err(e) => {
+                    // Network or other error - this suggests the server isn't reachable or isn't CalDAV
+                    return Err(e);
+                }
+            }
+        }
+
+        // If we never got a valid CalDAV response (e.g., all requests failed), 
+        // this is likely not a CalDAV server
+        if !has_valid_caldav_response {
+            return Err(CalDAVError::ServerError(404));
         }
 
         // Remove duplicates
@@ -620,7 +665,6 @@ impl CalDAVClient {
         }
 
         let body = response.text().await.map_err(CalDAVError::RequestError)?;
-        println!("Discovery response for {}: {}", path, body);
 
         let mut calendar_paths = Vec::new();
 
@@ -631,7 +675,6 @@ impl CalDAVClient {
 
                 // Extract href first
                 if let Some(href) = self.extract_xml_content(response_content, "href") {
-                    println!("🔍 Checking resource: {}", href);
 
                     // Check if this is a calendar collection by looking for supported-calendar-component-set
                     // This indicates it's an actual calendar that can contain events
@@ -655,14 +698,10 @@ impl CalDAVClient {
                             && !href.ends_with("/calendars/")
                             && href.ends_with('/')
                         {
-                            println!("📅 Found calendar collection: {}", href);
                             calendar_paths.push(href);
                         } else {
-                            println!("❌ Skipping system/root directory: {}", href);
                         }
                     } else {
-                        println!("ℹ️  Not a calendar collection: {} (is_calendar: {}, has_collection: {})", 
-                               href, is_calendar, has_collection);
                     }
                 }
             }
@@ -671,17 +710,38 @@ impl CalDAVClient {
         Ok(calendar_paths)
     }
 
-    /// Parse iCal datetime format
-    fn parse_datetime(
+    /// Parse iCal datetime format and return NaiveDateTime + timezone info
+    /// According to RFC 5545: if no TZID parameter is provided, treat as UTC
+    fn parse_datetime_with_tz(
         &self,
         datetime_str: &str,
-        _original_property: Option<&String>,
-    ) -> Result<DateTime<Utc>, CalDAVError> {
-        use chrono::TimeZone;
+        original_property: Option<&String>,
+    ) -> Result<(chrono::NaiveDateTime, Option<String>), CalDAVError> {
+        // Extract timezone information from the original property if available
+        let mut timezone_id: Option<String> = None;
+        if let Some(prop) = original_property {
+            // Look for TZID parameter in the property
+            // Format: DTSTART;TZID=America/Denver:20231225T090000
+            if let Some(tzid_start) = prop.find("TZID=") {
+                let tzid_part = &prop[tzid_start + 5..];
+                if let Some(tzid_end) = tzid_part.find(':') {
+                    timezone_id = Some(tzid_part[..tzid_end].to_string());
+                } else if let Some(tzid_end) = tzid_part.find(';') {
+                    timezone_id = Some(tzid_part[..tzid_end].to_string());
+                }
+            }
+        }
 
-        // Handle different iCal datetime formats
+        // Clean the datetime string - remove any TZID prefix if present
         let cleaned = datetime_str.replace("TZID=", "").trim().to_string();
         
+        // Split on colon to separate TZID from datetime if format is "TZID=America/Denver:20231225T090000"
+        let datetime_part = if let Some(colon_pos) = cleaned.find(':') {
+            &cleaned[colon_pos + 1..]
+        } else {
+            &cleaned
+        };
+
         // Try different parsing formats
         let formats = [
             "%Y%m%dT%H%M%SZ", // UTC format: 20231225T120000Z
@@ -690,17 +750,240 @@ impl CalDAVClient {
         ];
 
         for format in &formats {
-            if let Ok(dt) = chrono::NaiveDateTime::parse_from_str(&cleaned, format) {
-                return Ok(Utc.from_utc_datetime(&dt));
+            // Try parsing as UTC format (with Z suffix)
+            if datetime_part.ends_with('Z') {
+                if let Ok(dt) = chrono::NaiveDateTime::parse_from_str(&datetime_part[..datetime_part.len()-1], "%Y%m%dT%H%M%S") {
+                    // Z suffix means UTC, ignore any TZID parameter
+                    return Ok((dt, Some("UTC".to_string())));
                 }
-            if let Ok(date) = chrono::NaiveDate::parse_from_str(&cleaned, format) {
+            }
+            
+            // Try parsing with timezone offset (e.g., 20231225T120000-0500)
+            if let Ok(dt) = chrono::DateTime::parse_from_str(datetime_part, "%Y%m%dT%H%M%S%z") {
+                // Convert to naive UTC time and return UTC timezone
+                return Ok((dt.naive_utc(), Some("UTC".to_string())));
+            }
+            
+            // Try ISO format with timezone offset (e.g., 2023-12-25T12:00:00-05:00)
+            if let Ok(dt) = chrono::DateTime::parse_from_str(datetime_part, "%Y-%m-%dT%H:%M:%S%z") {
+                // Convert to naive UTC time and return UTC timezone
+                return Ok((dt.naive_utc(), Some("UTC".to_string())));
+            }
+            
+            // Try ISO format with Z suffix (e.g., 2023-12-25T12:00:00Z)
+            if let Ok(dt) = chrono::DateTime::parse_from_str(datetime_part, "%Y-%m-%dT%H:%M:%SZ") {
+                // Z suffix means UTC
+                return Ok((dt.naive_utc(), Some("UTC".to_string())));
+            }
+            
+            // Special handling for date-only format (all-day events)
+            if *format == "%Y%m%d" {
+                if let Ok(date) = chrono::NaiveDate::parse_from_str(datetime_part, format) {
+                    // Convert date to midnight datetime for all-day events
+                    let naive_dt = date.and_hms_opt(0, 0, 0).unwrap();
+                    let tz = timezone_id.unwrap_or_else(|| "UTC".to_string());
+                    return Ok((naive_dt, Some(tz)));
+                }
+            } else {
+                // Try parsing as naive datetime for time-based formats
+                if let Ok(naive_dt) = chrono::NaiveDateTime::parse_from_str(datetime_part, format) {
+                    // Per RFC 5545: if no TZID parameter is provided, treat as UTC
+                    let tz = timezone_id.unwrap_or_else(|| "UTC".to_string());
+                    
+                    // If it's UTC, the naive time is already correct
+                    // If it's a local timezone, we store the naive time and the timezone ID
+                    return Ok((naive_dt, Some(tz)));
+                }
+            }
+        }
+
+        Err(CalDAVError::ParseError(format!(
+            "Could not parse datetime: {}",
+            datetime_str
+        )))
+    }
+
+    /// Parse iCal datetime format with timezone support
+    fn parse_datetime(
+        &self,
+        datetime_str: &str,
+        original_property: Option<&String>,
+    ) -> Result<DateTime<Utc>, CalDAVError> {
+        use chrono::TimeZone;
+        use chrono_tz::Tz;
+
+        // Extract timezone information from the original property if available
+        let mut timezone_id: Option<&str> = None;
+        if let Some(prop) = original_property {
+            // Look for TZID parameter in the property
+            // Format: DTSTART;TZID=America/Denver:20231225T090000
+            if let Some(tzid_start) = prop.find("TZID=") {
+                let tzid_part = &prop[tzid_start + 5..];
+                if let Some(tzid_end) = tzid_part.find(':') {
+                    timezone_id = Some(&tzid_part[..tzid_end]);
+                } else if let Some(tzid_end) = tzid_part.find(';') {
+                    timezone_id = Some(&tzid_part[..tzid_end]);
+                }
+            }
+        }
+
+        // Clean the datetime string - remove any TZID prefix if present
+        let cleaned = datetime_str.replace("TZID=", "").trim().to_string();
+        
+        // Split on colon to separate TZID from datetime if format is "TZID=America/Denver:20231225T090000"
+        let datetime_part = if let Some(colon_pos) = cleaned.find(':') {
+            &cleaned[colon_pos + 1..]
+        } else {
+            &cleaned
+        };
+
+        // Try different parsing formats
+        let formats = [
+            "%Y%m%dT%H%M%SZ", // UTC format: 20231225T120000Z
+            "%Y%m%dT%H%M%S",  // Local format: 20231225T120000
+            "%Y%m%d",         // Date only: 20231225
+        ];
+
+        for format in &formats {
+            // Try parsing as UTC first (if it has Z suffix)
+            if datetime_part.ends_with('Z') {
+                if let Ok(dt) = chrono::NaiveDateTime::parse_from_str(&datetime_part[..datetime_part.len()-1], "%Y%m%dT%H%M%S") {
+                    return Ok(dt.and_utc());
+                }
+            }
+            
+            // Try parsing with timezone offset (e.g., 20231225T120000-0500)
+            if let Ok(dt) = DateTime::parse_from_str(datetime_part, "%Y%m%dT%H%M%S%z") {
+                return Ok(dt.with_timezone(&Utc));
+            }
+            
+            // Try ISO format with timezone offset (e.g., 2023-12-25T12:00:00-05:00)
+            if let Ok(dt) = DateTime::parse_from_str(datetime_part, "%Y-%m-%dT%H:%M:%S%z") {
+                return Ok(dt.with_timezone(&Utc));
+            }
+            
+            // Try ISO format with Z suffix (e.g., 2023-12-25T12:00:00Z)
+            if let Ok(dt) = DateTime::parse_from_str(datetime_part, "%Y-%m-%dT%H:%M:%SZ") {
+                return Ok(dt.with_timezone(&Utc));
+            }
+            
+            // Try parsing as naive datetime
+            if let Ok(naive_dt) = chrono::NaiveDateTime::parse_from_str(datetime_part, format) {
+                // If we have timezone information, convert accordingly
+                if let Some(tz_id) = timezone_id {
+                    let tz_result = if tz_id.starts_with("/mozilla.org/") {
+                        // Mozilla/Thunderbird format: /mozilla.org/20070129_1/Europe/London
+                        tz_id.split('/').last().and_then(|tz_name| tz_name.parse::<Tz>().ok())
+                    } else if tz_id.contains('/') {
+                        // Standard timezone format: America/New_York, Europe/London
+                        tz_id.parse::<Tz>().ok()
+                    } else {
+                        // Try common abbreviations and Windows timezone names
+                        match tz_id {
+                            // Standard abbreviations
+                            "EST" => Some(Tz::America__New_York),
+                            "PST" => Some(Tz::America__Los_Angeles),
+                            "MST" => Some(Tz::America__Denver), 
+                            "CST" => Some(Tz::America__Chicago),
+                            
+                            // North America - Windows timezone names to IANA mapping
+                            "Mountain Standard Time" => Some(Tz::America__Denver),
+                            "Eastern Standard Time" => Some(Tz::America__New_York),
+                            "Central Standard Time" => Some(Tz::America__Chicago),
+                            "Pacific Standard Time" => Some(Tz::America__Los_Angeles),
+                            "Mountain Daylight Time" => Some(Tz::America__Denver),
+                            "Eastern Daylight Time" => Some(Tz::America__New_York),
+                            "Central Daylight Time" => Some(Tz::America__Chicago),
+                            "Pacific Daylight Time" => Some(Tz::America__Los_Angeles),
+                            "Hawaiian Standard Time" => Some(Tz::Pacific__Honolulu),
+                            "Alaskan Standard Time" => Some(Tz::America__Anchorage),
+                            "Alaskan Daylight Time" => Some(Tz::America__Anchorage),
+                            "Atlantic Standard Time" => Some(Tz::America__Halifax),
+                            "Newfoundland Standard Time" => Some(Tz::America__St_Johns),
+                            
+                            // Europe
+                            "GMT Standard Time" => Some(Tz::Europe__London),
+                            "Greenwich Standard Time" => Some(Tz::UTC),
+                            "W. Europe Standard Time" => Some(Tz::Europe__Berlin),
+                            "Central Europe Standard Time" => Some(Tz::Europe__Warsaw),
+                            "Romance Standard Time" => Some(Tz::Europe__Paris),
+                            "Central European Standard Time" => Some(Tz::Europe__Belgrade),
+                            "E. Europe Standard Time" => Some(Tz::Europe__Bucharest),
+                            "FLE Standard Time" => Some(Tz::Europe__Helsinki),
+                            "GTB Standard Time" => Some(Tz::Europe__Athens),
+                            "Russian Standard Time" => Some(Tz::Europe__Moscow),
+                            "Turkey Standard Time" => Some(Tz::Europe__Istanbul),
+                            
+                            // Asia
+                            "China Standard Time" => Some(Tz::Asia__Shanghai),
+                            "Tokyo Standard Time" => Some(Tz::Asia__Tokyo),
+                            "Korea Standard Time" => Some(Tz::Asia__Seoul),
+                            "Singapore Standard Time" => Some(Tz::Asia__Singapore),
+                            "India Standard Time" => Some(Tz::Asia__Kolkata),
+                            "Pakistan Standard Time" => Some(Tz::Asia__Karachi),
+                            "Bangladesh Standard Time" => Some(Tz::Asia__Dhaka),
+                            "Thailand Standard Time" => Some(Tz::Asia__Bangkok),
+                            "SE Asia Standard Time" => Some(Tz::Asia__Bangkok),
+                            "Myanmar Standard Time" => Some(Tz::Asia__Yangon),
+                            "Sri Lanka Standard Time" => Some(Tz::Asia__Colombo),
+                            "Nepal Standard Time" => Some(Tz::Asia__Kathmandu),
+                            "Central Asia Standard Time" => Some(Tz::Asia__Almaty),
+                            "West Asia Standard Time" => Some(Tz::Asia__Tashkent),
+                            "N. Central Asia Standard Time" => Some(Tz::Asia__Novosibirsk),
+                            "North Asia Standard Time" => Some(Tz::Asia__Krasnoyarsk),
+                            "North Asia East Standard Time" => Some(Tz::Asia__Irkutsk),
+                            "Yakutsk Standard Time" => Some(Tz::Asia__Yakutsk),
+                            "Vladivostok Standard Time" => Some(Tz::Asia__Vladivostok),
+                            "Magadan Standard Time" => Some(Tz::Asia__Magadan),
+                            
+                            // Australia & Pacific
+                            "AUS Eastern Standard Time" => Some(Tz::Australia__Sydney),
+                            "AUS Central Standard Time" => Some(Tz::Australia__Adelaide),
+                            "W. Australia Standard Time" => Some(Tz::Australia__Perth),
+                            "Tasmania Standard Time" => Some(Tz::Australia__Hobart),
+                            "New Zealand Standard Time" => Some(Tz::Pacific__Auckland),
+                            "Fiji Standard Time" => Some(Tz::Pacific__Fiji),
+                            "Tonga Standard Time" => Some(Tz::Pacific__Tongatapu),
+                            
+                            // Africa & Middle East
+                            "South Africa Standard Time" => Some(Tz::Africa__Johannesburg),
+                            "Egypt Standard Time" => Some(Tz::Africa__Cairo),
+                            "Israel Standard Time" => Some(Tz::Asia__Jerusalem),
+                            "Iran Standard Time" => Some(Tz::Asia__Tehran),
+                            "Arabic Standard Time" => Some(Tz::Asia__Baghdad),
+                            "Arab Standard Time" => Some(Tz::Asia__Riyadh),
+                            
+                            // South America
+                            "SA Eastern Standard Time" => Some(Tz::America__Sao_Paulo),
+                            "Argentina Standard Time" => Some(Tz::America__Buenos_Aires),
+                            "SA Western Standard Time" => Some(Tz::America__La_Paz),
+                            "SA Pacific Standard Time" => Some(Tz::America__Bogota),
+                            
+                            _ => None,
+                        }
+                    };
+
+                    if let Some(tz) = tz_result {
+                        // Convert from the specified timezone to UTC
+                        if let Some(local_dt) = tz.from_local_datetime(&naive_dt).single() {
+                            return Ok(local_dt.with_timezone(&Utc));
+                        }
+                    }
+                    // If timezone parsing fails, fall back to UTC
+                }
+                // No timezone info or parsing failed - treat as UTC
+                return Ok(Utc.from_utc_datetime(&naive_dt));
+            }
+            
+            // Try parsing as date only
+            if let Ok(date) = chrono::NaiveDate::parse_from_str(datetime_part, format) {
                 return Ok(Utc.from_utc_datetime(&date.and_hms_opt(0, 0, 0).unwrap()));
             }
         }
 
         Err(CalDAVError::ParseError(format!(
-            "Unable to parse datetime: {}",
-            datetime_str
+            "Unable to parse datetime: {} (cleaned: {}, timezone: {:?})",
+            datetime_str, datetime_part, timezone_id
         )))
     }
 
@@ -1023,8 +1306,19 @@ impl CalDAVClient {
         // Format datetime for iCal (YYYYMMDDTHHMMSSZ format)
         let format_datetime =
             |dt: &DateTime<Utc>| -> String { dt.format("%Y%m%dT%H%M%SZ").to_string() };
+        let format_datetime_naive =
+            |dt: &chrono::NaiveDateTime| -> String { dt.format("%Y%m%dT%H%M%S").to_string() };
 
-        let format_date = |dt: &DateTime<Utc>| -> String { dt.format("%Y%m%d").to_string() };
+        let _format_date = |dt: &DateTime<Utc>| -> String { dt.format("%Y%m%d").to_string() };
+
+        // Format NaiveDateTime for iCal (local time without Z suffix)
+        let format_naive_datetime = |dt: &chrono::NaiveDateTime| -> String { 
+            dt.format("%Y%m%dT%H%M%S").to_string() 
+        };
+
+        let format_naive_date = |dt: &chrono::NaiveDateTime| -> String { 
+            dt.format("%Y%m%d").to_string() 
+        };
 
         // Start building the iCal event
         let mut ical = String::new();
@@ -1041,15 +1335,77 @@ impl CalDAVClient {
         if event.all_day {
             ical.push_str(&format!(
                 "DTSTART;VALUE=DATE:{}\r\n",
-                format_date(&event.dtstart)
+                format_naive_date(&event.dtstart)
             ));
             if let Some(end) = &event.dtend {
-                ical.push_str(&format!("DTEND;VALUE=DATE:{}\r\n", format_date(end)));
+                ical.push_str(&format!("DTEND;VALUE=DATE:{}\r\n", format_naive_date(end)));
             }
         } else {
-            ical.push_str(&format!("DTSTART:{}\r\n", format_datetime(&event.dtstart)));
+            // Include timezone information for non-all-day events per RFC 5545
+            if let Some(ref start_tzid) = event.dtstart_tzid {
+                if start_tzid == "UTC" {
+                    // UTC events should use Z suffix format
+                    ical.push_str(&format!("DTSTART:{}Z\r\n", format_naive_datetime(&event.dtstart)));
+                } else if start_tzid.starts_with('+') || start_tzid.starts_with('-') {
+                    // Timezone offset format (e.g., "+05:00", "-04:00")
+                    // Convert local time to UTC using the offset and use Z format
+                    if let Ok(offset_hours) = start_tzid[1..3].parse::<i32>() {
+                        let offset_minutes = start_tzid[4..6].parse::<i32>().unwrap_or(0);
+                        let total_offset_minutes = if start_tzid.starts_with('+') {
+                            offset_hours * 60 + offset_minutes
+                        } else {
+                            -(offset_hours * 60 + offset_minutes)
+                        };
+                        
+                        // Convert local time to UTC by applying the inverse offset
+                        // If timezone is +04:00 (local ahead of UTC), subtract to get UTC
+                        // If timezone is -04:00 (local behind UTC), add to get UTC
+                        let utc_time = event.dtstart - chrono::Duration::minutes(total_offset_minutes as i64);
+                        ical.push_str(&format!("DTSTART:{}Z\r\n", format_naive_datetime(&utc_time)));
+                    } else {
+                        // Fallback to floating time if offset parsing fails
+                        ical.push_str(&format!("DTSTART:{}\r\n", format_naive_datetime(&event.dtstart)));
+                    }
+                } else {
+                    // Named timezone (e.g., "America/New_York") - use TZID parameter per RFC 5545
+                    ical.push_str(&format!("DTSTART;TZID={}:{}\r\n", start_tzid, format_naive_datetime(&event.dtstart)));
+                }
+            } else {
+                // No timezone info - treat as floating local time per RFC 5545
+                ical.push_str(&format!("DTSTART:{}\r\n", format_naive_datetime(&event.dtstart)));
+            }
+            
             if let Some(end) = &event.dtend {
-                ical.push_str(&format!("DTEND:{}\r\n", format_datetime(end)));
+                if let Some(ref end_tzid) = event.dtend_tzid {
+                    if end_tzid == "UTC" {
+                        // UTC events should use Z suffix format
+                        ical.push_str(&format!("DTEND:{}Z\r\n", format_naive_datetime(end)));
+                    } else if end_tzid.starts_with('+') || end_tzid.starts_with('-') {
+                        // Timezone offset format (e.g., "+05:00", "-04:00")
+                        // Convert local time to UTC using the offset and use Z format
+                        if let Ok(offset_hours) = end_tzid[1..3].parse::<i32>() {
+                            let offset_minutes = end_tzid[4..6].parse::<i32>().unwrap_or(0);
+                            let total_offset_minutes = if end_tzid.starts_with('+') {
+                                offset_hours * 60 + offset_minutes
+                            } else {
+                                -(offset_hours * 60 + offset_minutes)
+                            };
+                            
+                            // Convert local time to UTC by subtracting the offset
+                            let utc_time = *end - chrono::Duration::minutes(total_offset_minutes as i64);
+                            ical.push_str(&format!("DTEND:{}Z\r\n", format_naive_datetime(&utc_time)));
+                        } else {
+                            // Fallback to floating time if offset parsing fails
+                            ical.push_str(&format!("DTEND:{}\r\n", format_naive_datetime(end)));
+                        }
+                    } else {
+                        // Named timezone (e.g., "America/New_York") - use TZID parameter per RFC 5545  
+                        ical.push_str(&format!("DTEND;TZID={}:{}\r\n", end_tzid, format_naive_datetime(end)));
+                    }
+                } else {
+                    // No timezone info - treat as floating local time per RFC 5545
+                    ical.push_str(&format!("DTEND:{}\r\n", format_naive_datetime(end)));
+                }
             }
         }
 
@@ -1105,7 +1461,18 @@ impl CalDAVClient {
 
         // Creation and modification times
         if let Some(created) = &event.created {
-            ical.push_str(&format!("CREATED:{}\r\n", format_datetime(created)));
+            if let Some(ref created_tzid) = event.created_tzid {
+                if created_tzid == "UTC" {
+                    ical.push_str(&format!("CREATED:{}Z\r\n", format_datetime_naive(created)));
+                } else {
+                    // Per RFC 5545, CREATED typically should be in UTC or floating time
+                    // Treat non-UTC as floating time
+                    ical.push_str(&format!("CREATED:{}\r\n", format_datetime_naive(created)));
+                }
+            } else {
+                // No timezone info - output as floating time per RFC 5545
+                ical.push_str(&format!("CREATED:{}\r\n", format_datetime_naive(created)));
+            }
         }
 
         ical.push_str(&format!("LAST-MODIFIED:{}\r\n", format_datetime(&now)));
@@ -1162,10 +1529,10 @@ impl CalDAVClient {
             if event.all_day {
                 ical.push_str(&format!(
                     "EXDATE;VALUE=DATE:{}\r\n",
-                    format_date(exception_date)
+                    format_naive_date(exception_date)
                 ));
             } else {
-                ical.push_str(&format!("EXDATE:{}\r\n", format_datetime(exception_date)));
+                ical.push_str(&format!("EXDATE:{}\r\n", format_naive_datetime(exception_date)));
             }
         }
 

backend/src/db.rs

@@ -1,4 +1,4 @@
-use chrono::{DateTime, Utc};
+use chrono::{DateTime, Duration, Utc};
 use serde::{Deserialize, Serialize};
 use sqlx::sqlite::{SqlitePool, SqlitePoolOptions};
 use sqlx::{FromRow, Result};
@@ -99,6 +99,38 @@ pub struct UserPreferences {
     pub updated_at: DateTime<Utc>,
 }
 
+/// External calendar model
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct ExternalCalendar {
+    pub id: i32,
+    pub user_id: String,
+    pub name: String,
+    pub url: String,
+    pub color: String,
+    pub is_visible: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub last_fetched: Option<DateTime<Utc>>,
+}
+
+impl ExternalCalendar {
+    /// Create a new external calendar
+    pub fn new(user_id: String, name: String, url: String, color: String) -> Self {
+        let now = Utc::now();
+        Self {
+            id: 0, // Will be set by database
+            user_id,
+            name,
+            url,
+            color,
+            is_visible: true,
+            created_at: now,
+            updated_at: now,
+            last_fetched: None,
+        }
+    }
+}
+
 impl UserPreferences {
     /// Create default preferences for a new user
     pub fn default_for_user(user_id: String) -> Self {
@@ -311,3 +343,146 @@ impl<'a> PreferencesRepository<'a> {
         Ok(())
     }
 }
+
+/// Repository for ExternalCalendar operations
+pub struct ExternalCalendarRepository<'a> {
+    db: &'a Database,
+}
+
+impl<'a> ExternalCalendarRepository<'a> {
+    pub fn new(db: &'a Database) -> Self {
+        Self { db }
+    }
+
+    /// Get all external calendars for a user
+    pub async fn get_by_user(&self, user_id: &str) -> Result<Vec<ExternalCalendar>> {
+        sqlx::query_as::<_, ExternalCalendar>(
+            "SELECT * FROM external_calendars WHERE user_id = ? ORDER BY created_at ASC",
+        )
+        .bind(user_id)
+        .fetch_all(self.db.pool())
+        .await
+    }
+
+    /// Create a new external calendar
+    pub async fn create(&self, calendar: &ExternalCalendar) -> Result<i32> {
+        let result = sqlx::query(
+            "INSERT INTO external_calendars (user_id, name, url, color, is_visible, created_at, updated_at) 
+             VALUES (?, ?, ?, ?, ?, ?, ?)",
+        )
+        .bind(&calendar.user_id)
+        .bind(&calendar.name)
+        .bind(&calendar.url)
+        .bind(&calendar.color)
+        .bind(&calendar.is_visible)
+        .bind(&calendar.created_at)
+        .bind(&calendar.updated_at)
+        .execute(self.db.pool())
+        .await?;
+
+        Ok(result.last_insert_rowid() as i32)
+    }
+
+    /// Update an external calendar
+    pub async fn update(&self, id: i32, calendar: &ExternalCalendar) -> Result<()> {
+        sqlx::query(
+            "UPDATE external_calendars 
+             SET name = ?, url = ?, color = ?, is_visible = ?, updated_at = ?
+             WHERE id = ? AND user_id = ?",
+        )
+        .bind(&calendar.name)
+        .bind(&calendar.url)
+        .bind(&calendar.color)
+        .bind(&calendar.is_visible)
+        .bind(Utc::now())
+        .bind(id)
+        .bind(&calendar.user_id)
+        .execute(self.db.pool())
+        .await?;
+
+        Ok(())
+    }
+
+    /// Delete an external calendar
+    pub async fn delete(&self, id: i32, user_id: &str) -> Result<()> {
+        sqlx::query("DELETE FROM external_calendars WHERE id = ? AND user_id = ?")
+            .bind(id)
+            .bind(user_id)
+            .execute(self.db.pool())
+            .await?;
+
+        Ok(())
+    }
+
+    /// Update last_fetched timestamp
+    pub async fn update_last_fetched(&self, id: i32, user_id: &str) -> Result<()> {
+        sqlx::query(
+            "UPDATE external_calendars SET last_fetched = ? WHERE id = ? AND user_id = ?",
+        )
+        .bind(Utc::now())
+        .bind(id)
+        .bind(user_id)
+        .execute(self.db.pool())
+        .await?;
+
+        Ok(())
+    }
+
+    /// Get cached ICS data for an external calendar
+    pub async fn get_cached_data(&self, external_calendar_id: i32) -> Result<Option<(String, DateTime<Utc>)>> {
+        let result = sqlx::query_as::<_, (String, DateTime<Utc>)>(
+            "SELECT ics_data, cached_at FROM external_calendar_cache WHERE external_calendar_id = ?",
+        )
+        .bind(external_calendar_id)
+        .fetch_optional(self.db.pool())
+        .await?;
+
+        Ok(result)
+    }
+
+    /// Update cache with new ICS data
+    pub async fn update_cache(&self, external_calendar_id: i32, ics_data: &str, etag: Option<&str>) -> Result<()> {
+        sqlx::query(
+            "INSERT INTO external_calendar_cache (external_calendar_id, ics_data, etag, cached_at)
+             VALUES (?, ?, ?, ?)
+             ON CONFLICT(external_calendar_id) DO UPDATE SET
+             ics_data = excluded.ics_data,
+             etag = excluded.etag,
+             cached_at = excluded.cached_at",
+        )
+        .bind(external_calendar_id)
+        .bind(ics_data)
+        .bind(etag)
+        .bind(Utc::now())
+        .execute(self.db.pool())
+        .await?;
+
+        Ok(())
+    }
+
+    /// Check if cache is stale (older than max_age_minutes)
+    pub async fn is_cache_stale(&self, external_calendar_id: i32, max_age_minutes: i64) -> Result<bool> {
+        let cutoff_time = Utc::now() - Duration::minutes(max_age_minutes);
+        
+        let result = sqlx::query_scalar::<_, i64>(
+            "SELECT COUNT(*) FROM external_calendar_cache 
+             WHERE external_calendar_id = ? AND cached_at > ?",
+        )
+        .bind(external_calendar_id)
+        .bind(cutoff_time)
+        .fetch_one(self.db.pool())
+        .await?;
+
+        Ok(result == 0)
+    }
+
+    /// Clear cache for an external calendar
+    pub async fn clear_cache(&self, external_calendar_id: i32) -> Result<()> {
+        sqlx::query("DELETE FROM external_calendar_cache WHERE external_calendar_id = ?")
+            .bind(external_calendar_id)
+            .execute(self.db.pool())
+            .await?;
+
+        Ok(())
+    }
+}

backend/src/handlers.rs

@@ -1,12 +0,0 @@
-// Re-export all handlers from the modular structure
-mod auth;
-mod calendar;
-mod events;
-mod preferences;
-mod series;
-
-pub use auth::{get_user_info, login, verify_token};
-pub use calendar::{create_calendar, delete_calendar};
-pub use events::{create_event, delete_event, get_calendar_events, refresh_event, update_event};
-pub use preferences::{get_preferences, logout, update_preferences};
-pub use series::{create_event_series, delete_event_series, update_event_series};

backend/src/handlers/auth.rs

@@ -82,10 +82,6 @@ pub async fn get_user_info(
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to discover calendars: {}", e)))?;
 
-    println!(
-        "✅ Authentication successful! Found {} calendars",
-        calendar_paths.len()
-    );
 
     let calendars: Vec<CalendarInfo> = calendar_paths
         .iter()
@@ -93,6 +89,7 @@ pub async fn get_user_info(
             path: path.clone(),
             display_name: extract_calendar_name(path),
             color: generate_calendar_color(path),
+            is_visible: true, // Default to visible
         })
         .collect();
 

backend/src/handlers/events.rs

@@ -16,7 +16,7 @@ use crate::{
     AppState,
 };
 use calendar_models::{
-    AlarmAction, AlarmTrigger, Attendee, CalendarUser, EventClass, EventStatus, VAlarm, VEvent,
+    Attendee, CalendarUser, EventClass, EventStatus, VEvent,
 };
 
 use super::auth::{extract_bearer_token, extract_password_header};
@@ -35,7 +35,6 @@ pub async fn get_calendar_events(
     // Extract and verify token
     let token = extract_bearer_token(&headers)?;
     let password = extract_password_header(&headers)?;
-    println!("🔑 API call with password length: {}", password.len());
 
     // Create CalDAV config from token and password
     let config = state
@@ -85,7 +84,7 @@ pub async fn get_calendar_events(
         } - chrono::Duration::days(1);
 
         all_events.retain(|event| {
-            let event_date = event.dtstart.date_naive();
+            let event_date = event.dtstart.date();
             
             // For non-recurring events, check if the event date is within the month
             if event.rrule.is_none() || event.rrule.as_ref().unwrap().is_empty() {
@@ -127,7 +126,6 @@ pub async fn get_calendar_events(
         });
     }
 
-    println!("📅 Returning {} events", all_events.len());
     Ok(Json(all_events))
 }
 
@@ -234,26 +232,26 @@ pub async fn delete_event(
                 if event.rrule.is_some() && !event.rrule.as_ref().unwrap().is_empty() {
                     // Recurring event - add EXDATE for this occurrence
                     if let Some(occurrence_date) = &request.occurrence_date {
-                        let exception_utc = if let Ok(date) =
+                        let exception_datetime = if let Ok(date) =
                             chrono::DateTime::parse_from_rfc3339(occurrence_date)
                         {
-                            // RFC3339 format (with time and timezone)
-                            date.with_timezone(&chrono::Utc)
+                            // RFC3339 format (with time and timezone) - convert to naive
+                            date.naive_utc()
                         } else if let Ok(naive_date) =
                             chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d")
                         {
                             // Simple date format (YYYY-MM-DD)
-                            naive_date.and_hms_opt(0, 0, 0).unwrap().and_utc()
+                            naive_date.and_hms_opt(0, 0, 0).unwrap()
                         } else {
                             return Err(ApiError::BadRequest(format!("Invalid occurrence date format: {}. Expected RFC3339 or YYYY-MM-DD", occurrence_date)));
                         };
 
                         let mut updated_event = event;
-                        updated_event.exdate.push(exception_utc);
+                        updated_event.exdate.push(exception_datetime);
 
                         println!(
                             "🔄 Adding EXDATE {} to recurring event {}",
-                            exception_utc.format("%Y%m%dT%H%M%SZ"),
+                            exception_datetime.format("%Y%m%dT%H%M%S"),
                             updated_event.uid
                         );
 
@@ -453,19 +451,16 @@ pub async fn create_event(
         calendar_paths[0].clone()
     };
 
-    // Parse dates and times
+    // Parse dates and times as local times (no UTC conversion)
     let start_datetime =
-        parse_event_datetime(&request.start_date, &request.start_time, request.all_day)
+        parse_event_datetime_local(&request.start_date, &request.start_time, request.all_day)
             .map_err(|e| ApiError::BadRequest(format!("Invalid start date/time: {}", e)))?;
 
-    let mut end_datetime = parse_event_datetime(&request.end_date, &request.end_time, request.all_day)
+    let end_datetime = parse_event_datetime_local(&request.end_date, &request.end_time, request.all_day)
         .map_err(|e| ApiError::BadRequest(format!("Invalid end date/time: {}", e)))?;
 
-    // For all-day events, add one day to end date for RFC-5545 compliance
-    // RFC-5545 uses exclusive end dates for all-day events
-    if request.all_day {
-        end_datetime = end_datetime + chrono::Duration::days(1);
-    }
+    // Note: Frontend already converts inclusive UI dates to exclusive dates for all-day events
+    // No additional conversion needed here
 
     // Validate that end is after start (allow equal times for all-day events)
     if request.all_day {
@@ -527,19 +522,8 @@ pub async fn create_event(
             .collect()
     };
 
-    // Parse alarms - convert from minutes string to EventReminder structs
-    let alarms: Vec<crate::calendar::EventReminder> = if request.reminder.trim().is_empty() {
-        Vec::new()
-    } else {
-        match request.reminder.parse::<i32>() {
-            Ok(minutes) => vec![crate::calendar::EventReminder {
-                minutes_before: minutes,
-                action: crate::calendar::ReminderAction::Display,
-                description: None,
-            }],
-            Err(_) => Vec::new(),
-        }
-    };
+    // Use VAlarms directly from request (no conversion needed)
+    let alarms = request.alarms;
 
     // Check if recurrence is already a full RRULE or just a simple type
     let rrule = if request.recurrence.starts_with("FREQ=") {
@@ -594,9 +578,13 @@ pub async fn create_event(
         }
     };
 
-    // Create the VEvent struct (RFC 5545 compliant)
+    // Create the VEvent struct (RFC 5545 compliant) with local times
     let mut event = VEvent::new(uid, start_datetime);
     event.dtend = Some(end_datetime);
+    
+    // Set timezone information from client
+    event.dtstart_tzid = Some(request.timezone.clone());
+    event.dtend_tzid = Some(request.timezone.clone());
     event.summary = if request.title.trim().is_empty() {
         None
     } else {
@@ -646,21 +634,7 @@ pub async fn create_event(
     event.categories = categories;
     event.rrule = rrule;
     event.all_day = request.all_day;
-    event.alarms = alarms
-        .into_iter()
-        .map(|reminder| VAlarm {
-            action: AlarmAction::Display,
-            trigger: AlarmTrigger::Duration(chrono::Duration::minutes(
-                -reminder.minutes_before as i64,
-            )),
-            duration: None,
-            repeat: None,
-            description: reminder.description,
-            summary: None,
-            attendees: Vec::new(),
-            attach: Vec::new(),
-        })
-        .collect();
+    event.alarms = alarms;
     event.calendar_path = Some(calendar_path.clone());
 
     // Create the event on the CalDAV server
@@ -757,19 +731,18 @@ pub async fn update_event(
     let (mut event, calendar_path, event_href) = found_event
         .ok_or_else(|| ApiError::NotFound(format!("Event with UID '{}' not found", request.uid)))?;
 
-    // Parse dates and times
+    // Parse dates and times as local times (no UTC conversion)
+    println!("🕐 UPDATE: Received start_date: '{}', start_time: '{}', timezone: '{}'", 
+             request.start_date, request.start_time, request.timezone);
     let start_datetime =
-        parse_event_datetime(&request.start_date, &request.start_time, request.all_day)
+        parse_event_datetime_local(&request.start_date, &request.start_time, request.all_day)
             .map_err(|e| ApiError::BadRequest(format!("Invalid start date/time: {}", e)))?;
 
-    let mut end_datetime = parse_event_datetime(&request.end_date, &request.end_time, request.all_day)
+    let end_datetime = parse_event_datetime_local(&request.end_date, &request.end_time, request.all_day)
         .map_err(|e| ApiError::BadRequest(format!("Invalid end date/time: {}", e)))?;
 
-    // For all-day events, add one day to end date for RFC-5545 compliance
-    // RFC-5545 uses exclusive end dates for all-day events
-    if request.all_day {
-        end_datetime = end_datetime + chrono::Duration::days(1);
-    }
+    // Note: Frontend already converts inclusive UI dates to exclusive dates for all-day events
+    // No additional conversion needed here
 
     // Validate that end is after start (allow equal times for all-day events)
     if request.all_day {
@@ -786,9 +759,11 @@ pub async fn update_event(
         }
     }
 
-    // Update event properties
+    // Update event properties with local times and timezone info
     event.dtstart = start_datetime;
     event.dtend = Some(end_datetime);
+    event.dtstart_tzid = Some(request.timezone.clone());
+    event.dtend_tzid = Some(request.timezone.clone());
     event.summary = if request.title.trim().is_empty() {
         None
     } else {
@@ -822,6 +797,99 @@ pub async fn update_event(
 
     event.priority = request.priority;
 
+    // Process recurrence information to set RRULE
+    println!("🔄 Processing recurrence: '{}'", request.recurrence);
+    println!("🔄 Recurrence days: {:?}", request.recurrence_days);
+    println!("🔄 Recurrence interval: {:?}", request.recurrence_interval);
+    println!("🔄 Recurrence count: {:?}", request.recurrence_count);
+    println!("🔄 Recurrence end date: {:?}", request.recurrence_end_date);
+    
+    let rrule = if request.recurrence.starts_with("FREQ=") {
+        // Frontend sent a complete RRULE string, use it directly
+        if request.recurrence.is_empty() {
+            None
+        } else {
+            Some(request.recurrence.clone())
+        }
+    } else {
+        // Parse recurrence type and build RRULE with all parameters
+        let base_rrule = match request.recurrence.to_uppercase().as_str() {
+            "DAILY" => Some("FREQ=DAILY".to_string()),
+            "WEEKLY" => {
+                // Handle weekly recurrence with optional BYDAY parameter
+                let mut rrule = "FREQ=WEEKLY".to_string();
+
+                // Check if specific days are selected (recurrence_days has 7 elements: [Sun, Mon, Tue, Wed, Thu, Fri, Sat])
+                if request.recurrence_days.len() == 7 {
+                    let selected_days: Vec<&str> = request
+                        .recurrence_days
+                        .iter()
+                        .enumerate()
+                        .filter_map(|(i, &selected)| {
+                            if selected {
+                                Some(match i {
+                                    0 => "SU", // Sunday
+                                    1 => "MO", // Monday
+                                    2 => "TU", // Tuesday
+                                    3 => "WE", // Wednesday
+                                    4 => "TH", // Thursday
+                                    5 => "FR", // Friday
+                                    6 => "SA", // Saturday
+                                    _ => return None,
+                                })
+                            } else {
+                                None
+                            }
+                        })
+                        .collect();
+
+                    if !selected_days.is_empty() {
+                        rrule = format!("{};BYDAY={}", rrule, selected_days.join(","));
+                    }
+                }
+
+                Some(rrule)
+            }
+            "MONTHLY" => Some("FREQ=MONTHLY".to_string()),
+            "YEARLY" => Some("FREQ=YEARLY".to_string()),
+            "NONE" | "" => None, // Clear any existing recurrence
+            _ => None,
+        };
+
+        // Add INTERVAL, COUNT, and UNTIL parameters if specified
+        if let Some(mut rrule_string) = base_rrule {
+            // Add INTERVAL parameter (every N days/weeks/months/years)
+            if let Some(interval) = request.recurrence_interval {
+                if interval > 1 {
+                    rrule_string = format!("{};INTERVAL={}", rrule_string, interval);
+                }
+            }
+
+            // Add COUNT or UNTIL parameter (but not both - COUNT takes precedence)
+            if let Some(count) = request.recurrence_count {
+                rrule_string = format!("{};COUNT={}", rrule_string, count);
+            } else if let Some(end_date) = &request.recurrence_end_date {
+                // Convert YYYY-MM-DD to YYYYMMDD format for UNTIL
+                if let Ok(date) = chrono::NaiveDate::parse_from_str(end_date, "%Y-%m-%d") {
+                    rrule_string = format!("{};UNTIL={}", rrule_string, date.format("%Y%m%d"));
+                }
+            }
+
+            Some(rrule_string)
+        } else {
+            None
+        }
+    };
+
+    event.rrule = rrule.clone();
+    println!("🔄 Set event RRULE to: {:?}", rrule);
+    
+    if rrule.is_some() {
+        println!("✨ Converting singleton event to recurring series with RRULE: {}", rrule.as_ref().unwrap());
+    } else {
+        println!("📝 Event remains non-recurring (no RRULE set)");
+    }
+
     // Update the event on the CalDAV server
     println!(
         "📝 Updating event {} at calendar_path: {}, event_href: {}",
@@ -840,36 +908,29 @@ pub async fn update_event(
     }))
 }
 
-fn parse_event_datetime(
+fn parse_event_datetime_local(
     date_str: &str,
     time_str: &str,
     all_day: bool,
-) -> Result<chrono::DateTime<chrono::Utc>, String> {
-    use chrono::{Local, NaiveDate, NaiveDateTime, NaiveTime, TimeZone, Utc};
+) -> Result<chrono::NaiveDateTime, String> {
+    use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
 
     // Parse the date
     let date = NaiveDate::parse_from_str(date_str, "%Y-%m-%d")
         .map_err(|_| format!("Invalid date format: {}. Expected YYYY-MM-DD", date_str))?;
 
     if all_day {
-        // For all-day events, use midnight UTC
+        // For all-day events, use start of day
         let datetime = date
             .and_hms_opt(0, 0, 0)
-            .ok_or_else(|| "Failed to create midnight datetime".to_string())?;
-        Ok(Utc.from_utc_datetime(&datetime))
+            .ok_or_else(|| "Failed to create start-of-day datetime".to_string())?;
+        Ok(datetime)
     } else {
         // Parse the time
         let time = NaiveTime::parse_from_str(time_str, "%H:%M")
             .map_err(|_| format!("Invalid time format: {}. Expected HH:MM", time_str))?;
 
-        // Combine date and time
-        let datetime = NaiveDateTime::new(date, time);
-
-        // Treat the datetime as local time and convert to UTC
-        let local_datetime = Local.from_local_datetime(&datetime)
-            .single()
-            .ok_or_else(|| "Ambiguous local datetime".to_string())?;
-        
-        Ok(local_datetime.with_timezone(&Utc))
+        // Combine date and time - now keeping as local time
+        Ok(NaiveDateTime::new(date, time))
     }
 }

backend/src/handlers/external_calendars.rs

@@ -0,0 +1,142 @@
+use axum::{
+    extract::{Path, State},
+    response::Json,
+};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+
+use crate::{
+    db::{ExternalCalendar, ExternalCalendarRepository},
+    models::ApiError,
+    AppState,
+};
+
+use super::auth::{extract_bearer_token};
+
+#[derive(Debug, Deserialize)]
+pub struct CreateExternalCalendarRequest {
+    pub name: String,
+    pub url: String,
+    pub color: String,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct UpdateExternalCalendarRequest {
+    pub name: String,
+    pub url: String,
+    pub color: String,
+    pub is_visible: bool,
+}
+
+#[derive(Debug, Serialize)]
+pub struct ExternalCalendarResponse {
+    pub id: i32,
+    pub name: String,
+    pub url: String,
+    pub color: String,
+    pub is_visible: bool,
+    pub created_at: chrono::DateTime<chrono::Utc>,
+    pub updated_at: chrono::DateTime<chrono::Utc>,
+    pub last_fetched: Option<chrono::DateTime<chrono::Utc>>,
+}
+
+impl From<ExternalCalendar> for ExternalCalendarResponse {
+    fn from(calendar: ExternalCalendar) -> Self {
+        Self {
+            id: calendar.id,
+            name: calendar.name,
+            url: calendar.url,
+            color: calendar.color,
+            is_visible: calendar.is_visible,
+            created_at: calendar.created_at,
+            updated_at: calendar.updated_at,
+            last_fetched: calendar.last_fetched,
+        }
+    }
+}
+
+pub async fn get_external_calendars(
+    headers: axum::http::HeaderMap,
+    State(app_state): State<Arc<AppState>>,
+) -> Result<Json<Vec<ExternalCalendarResponse>>, ApiError> {
+    // Extract and verify token, get user
+    let token = extract_bearer_token(&headers)?;
+    let user = app_state.auth_service.get_user_from_token(&token).await?;
+
+    let repo = ExternalCalendarRepository::new(&app_state.db);
+    let calendars = repo
+        .get_by_user(&user.id)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to get external calendars: {}", e)))?;
+
+    let response: Vec<ExternalCalendarResponse> = calendars.into_iter().map(Into::into).collect();
+    Ok(Json(response))
+}
+
+pub async fn create_external_calendar(
+    headers: axum::http::HeaderMap,
+    State(app_state): State<Arc<AppState>>,
+    Json(request): Json<CreateExternalCalendarRequest>,
+) -> Result<Json<ExternalCalendarResponse>, ApiError> {
+    let token = extract_bearer_token(&headers)?;
+    let user = app_state.auth_service.get_user_from_token(&token).await?;
+
+    let calendar = ExternalCalendar::new(
+        user.id,
+        request.name,
+        request.url,
+        request.color,
+    );
+
+    let repo = ExternalCalendarRepository::new(&app_state.db);
+    let id = repo
+        .create(&calendar)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to create external calendar: {}", e)))?;
+
+    let mut created_calendar = calendar;
+    created_calendar.id = id;
+
+    Ok(Json(created_calendar.into()))
+}
+
+pub async fn update_external_calendar(
+    headers: axum::http::HeaderMap,
+    State(app_state): State<Arc<AppState>>,
+    Path(id): Path<i32>,
+    Json(request): Json<UpdateExternalCalendarRequest>,
+) -> Result<Json<()>, ApiError> {
+    let token = extract_bearer_token(&headers)?;
+    let user = app_state.auth_service.get_user_from_token(&token).await?;
+
+    let mut calendar = ExternalCalendar::new(
+        user.id,
+        request.name,
+        request.url,
+        request.color,
+    );
+    calendar.is_visible = request.is_visible;
+
+    let repo = ExternalCalendarRepository::new(&app_state.db);
+    repo.update(id, &calendar)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to update external calendar: {}", e)))?;
+
+    Ok(Json(()))
+}
+
+pub async fn delete_external_calendar(
+    headers: axum::http::HeaderMap,
+    State(app_state): State<Arc<AppState>>,
+    Path(id): Path<i32>,
+) -> Result<Json<()>, ApiError> {
+    let token = extract_bearer_token(&headers)?;
+    let user = app_state.auth_service.get_user_from_token(&token).await?;
+
+    let repo = ExternalCalendarRepository::new(&app_state.db);
+    repo.delete(id, &user.id)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to delete external calendar: {}", e)))?;
+
+    Ok(Json(()))
+}

backend/src/handlers/ics_fetcher.rs

@@ -0,0 +1,873 @@
+use axum::{
+    extract::{Path, State},
+    response::Json,
+};
+use chrono::{DateTime, Utc, Datelike};
+use ical::parser::ical::component::IcalEvent;
+use reqwest::Client;
+use serde::Serialize;
+use std::sync::Arc;
+
+use crate::{
+    db::ExternalCalendarRepository,
+    models::ApiError,
+    AppState,
+};
+
+// Import VEvent from calendar-models shared crate
+use calendar_models::VEvent;
+
+use super::auth::{extract_bearer_token};
+
+#[derive(Debug, Serialize)]
+pub struct ExternalCalendarEventsResponse {
+    pub events: Vec<VEvent>,
+    pub last_fetched: DateTime<Utc>,
+}
+
+pub async fn fetch_external_calendar_events(
+    headers: axum::http::HeaderMap,
+    State(app_state): State<Arc<AppState>>,
+    Path(id): Path<i32>,
+) -> Result<Json<ExternalCalendarEventsResponse>, ApiError> {
+    let token = extract_bearer_token(&headers)?;
+    let user = app_state.auth_service.get_user_from_token(&token).await?;
+
+    let repo = ExternalCalendarRepository::new(&app_state.db);
+    
+    // Get user's external calendars to verify ownership and get URL
+    let calendars = repo
+        .get_by_user(&user.id)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to get external calendars: {}", e)))?;
+
+    let calendar = calendars
+        .into_iter()
+        .find(|c| c.id == id)
+        .ok_or_else(|| ApiError::NotFound("External calendar not found".to_string()))?;
+
+    if !calendar.is_visible {
+        return Ok(Json(ExternalCalendarEventsResponse {
+            events: vec![],
+            last_fetched: Utc::now(),
+        }));
+    }
+
+    // Check cache first
+    let cache_max_age_minutes = 5;
+    let mut ics_content = String::new();
+    let mut last_fetched = Utc::now();
+    let mut fetched_from_cache = false;
+
+    // Try to get from cache if not stale
+    match repo.is_cache_stale(id, cache_max_age_minutes).await {
+        Ok(is_stale) => {
+            if !is_stale {
+                // Cache is fresh, use it
+                if let Ok(Some((cached_data, cached_at))) = repo.get_cached_data(id).await {
+                    ics_content = cached_data;
+                    last_fetched = cached_at;
+                    fetched_from_cache = true;
+                }
+            }
+        }
+        Err(_) => {
+            // If cache check fails, proceed to fetch from URL
+        }
+    }
+
+    // If not fetched from cache, get from external URL
+    if !fetched_from_cache {
+        // Log the URL being fetched for debugging
+        println!("🌍 Fetching calendar URL: {}", calendar.url);
+        
+        let user_agents = vec![
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
+            "Mozilla/5.0 (compatible; Runway Calendar/1.0)",
+            "Outlook-iOS/709.2226530.prod.iphone (3.24.1)"
+        ];
+        
+        let mut response = None;
+        let mut last_error = None;
+        
+        // Try different user agents
+        for (i, ua) in user_agents.iter().enumerate() {
+            println!("🔄 Attempt {} with User-Agent: {}", i + 1, ua);
+            
+            let client = Client::builder()
+                .redirect(reqwest::redirect::Policy::limited(10))
+                .timeout(std::time::Duration::from_secs(30))
+                .user_agent(*ua)
+                .build()
+                .map_err(|e| ApiError::Internal(format!("Failed to create HTTP client: {}", e)))?;
+            
+            let result = client
+                .get(&calendar.url)
+                .header("Accept", "text/calendar,application/calendar+xml,text/plain,*/*")
+                .header("Accept-Charset", "utf-8")
+                .header("Cache-Control", "no-cache")
+                .send()
+                .await;
+                
+            match result {
+                Ok(resp) => {
+                    let status = resp.status();
+                    println!("📡 Response status: {}", status);
+                    if status.is_success() {
+                        response = Some(resp);
+                        break;
+                    } else if status == 400 {
+                        // Check if this is an Outlook auth error
+                        let error_body = resp.text().await.unwrap_or_default();
+                        if error_body.contains("OwaPage") || error_body.contains("Outlook") {
+                            println!("🚫 Outlook authentication error detected, trying next approach...");
+                            last_error = Some(format!("Outlook auth error: {}", error_body.chars().take(100).collect::<String>()));
+                            continue;
+                        }
+                        last_error = Some(format!("Bad Request: {}", error_body.chars().take(100).collect::<String>()));
+                    } else {
+                        last_error = Some(format!("HTTP {}", status));
+                    }
+                }
+                Err(e) => {
+                    println!("❌ Request failed: {}", e);
+                    last_error = Some(format!("Request error: {}", e));
+                }
+            }
+        }
+        
+        let response = response.ok_or_else(|| {
+            ApiError::Internal(format!(
+                "Failed to fetch calendar after trying {} different approaches. Last error: {}", 
+                user_agents.len(), 
+                last_error.unwrap_or("Unknown error".to_string())
+            ))
+        })?;
+
+        // Response is guaranteed to be successful here since we checked in the loop
+        println!("✅ Successfully fetched calendar data");
+        
+        ics_content = response
+            .text()
+            .await
+            .map_err(|e| ApiError::Internal(format!("Failed to read calendar content: {}", e)))?;
+
+        // Store in cache for future requests
+        let etag = None; // TODO: Extract ETag from response headers if available
+        if let Err(_) = repo.update_cache(id, &ics_content, etag).await {
+            // Log error but don't fail the request
+        }
+
+        // Update last_fetched timestamp
+        if let Err(_) = repo.update_last_fetched(id, &user.id).await {
+        }
+        
+        last_fetched = Utc::now();
+    }
+
+    // Parse ICS content
+    let events = parse_ics_content(&ics_content)
+        .map_err(|e| ApiError::BadRequest(format!("Failed to parse calendar: {}", e)))?;
+
+    Ok(Json(ExternalCalendarEventsResponse {
+        events,
+        last_fetched,
+    }))
+}
+
+fn parse_ics_content(ics_content: &str) -> Result<Vec<VEvent>, Box<dyn std::error::Error>> {
+    let reader = ical::IcalParser::new(ics_content.as_bytes());
+    let mut events = Vec::new();
+    let mut _total_components = 0;
+    let mut _failed_conversions = 0;
+
+    for calendar in reader {
+        let calendar = calendar?;
+        for component in calendar.events {
+            _total_components += 1;
+            match convert_ical_to_vevent(component) {
+                Ok(vevent) => {
+                    events.push(vevent);
+                }
+                Err(_) => {
+                    _failed_conversions += 1;
+                }
+            }
+        }
+    }
+
+    // Deduplicate events based on UID, start time, and summary
+    // Outlook sometimes includes duplicate events (recurring exceptions may appear multiple times)
+    events = deduplicate_events(events);
+
+    Ok(events)
+}
+
+fn convert_ical_to_vevent(ical_event: IcalEvent) -> Result<VEvent, Box<dyn std::error::Error>> {
+    use uuid::Uuid;
+
+    let mut summary = None;
+    let mut description = None;
+    let mut location = None;
+    let mut dtstart = None;
+    let mut dtend = None;
+    let mut uid = None;
+    let mut all_day = false;
+    let mut rrule = None;
+
+
+    // Extract properties
+    for property in ical_event.properties {
+        match property.name.as_str() {
+            "SUMMARY" => {
+                summary = property.value;
+            }
+            "DESCRIPTION" => {
+                description = property.value;
+            }
+            "LOCATION" => {
+                location = property.value;
+            }
+            "DTSTART" => {
+                if let Some(value) = property.value {
+                    // Check if it's a date-only value (all-day event)
+                    if value.len() == 8 && !value.contains('T') {
+                        all_day = true;
+                        // Parse YYYYMMDD format
+                        if let Ok(date) = chrono::NaiveDate::parse_from_str(&value, "%Y%m%d") {
+                            dtstart = Some(chrono::TimeZone::from_utc_datetime(&Utc, &date.and_hms_opt(12, 0, 0).unwrap()));
+                        }
+                    } else {
+                        // Extract timezone info from parameters
+                        let tzid = property.params.as_ref()
+                            .and_then(|params| params.iter().find(|(k, _)| k == "TZID"))
+                            .and_then(|(_, v)| v.first().cloned());
+                        
+                        // Parse datetime with timezone information
+                        if let Some(dt) = parse_datetime_with_tz(&value, tzid.as_deref()) {
+                            dtstart = Some(dt);
+                        }
+                    }
+                }
+            }
+            "DTEND" => {
+                if let Some(value) = property.value {
+                    if all_day && value.len() == 8 && !value.contains('T') {
+                        // For all-day events, DTEND is exclusive so use the date as-is at noon
+                        if let Ok(date) = chrono::NaiveDate::parse_from_str(&value, "%Y%m%d") {
+                            dtend = Some(chrono::TimeZone::from_utc_datetime(&Utc, &date.and_hms_opt(12, 0, 0).unwrap()));
+                        }
+                    } else {
+                        // Extract timezone info from parameters
+                        let tzid = property.params.as_ref()
+                            .and_then(|params| params.iter().find(|(k, _)| k == "TZID"))
+                            .and_then(|(_, v)| v.first().cloned());
+                        
+                        // Parse datetime with timezone information
+                        if let Some(dt) = parse_datetime_with_tz(&value, tzid.as_deref()) {
+                            dtend = Some(dt);
+                        }
+                    }
+                }
+            }
+            "UID" => {
+                uid = property.value;
+            }
+            "RRULE" => {
+                rrule = property.value;
+            }
+            _ => {} // Ignore other properties for now
+        }
+    }
+
+
+    let dtstart = dtstart.ok_or("Missing DTSTART")?;
+
+    let vevent = VEvent {
+        uid: uid.unwrap_or_else(|| Uuid::new_v4().to_string()),
+        dtstart: dtstart.naive_utc(),
+        dtstart_tzid: None, // TODO: Parse timezone from ICS
+        dtend: dtend.map(|dt| dt.naive_utc()),
+        dtend_tzid: None,   // TODO: Parse timezone from ICS
+        summary,
+        description,
+        location,
+        all_day,
+        rrule,
+        rdate: Vec::new(),
+        rdate_tzid: None,
+        exdate: Vec::new(), // External calendars don't need exception handling
+        exdate_tzid: None,
+        recurrence_id: None,
+        recurrence_id_tzid: None,
+        created: None,
+        created_tzid: None,
+        last_modified: None,
+        last_modified_tzid: None,
+        dtstamp: Utc::now(),
+        sequence: Some(0),
+        status: None,
+        transp: None,
+        organizer: None,
+        attendees: Vec::new(),
+        url: None,
+        attachments: Vec::new(),
+        categories: Vec::new(),
+        priority: None,
+        resources: Vec::new(),
+        related_to: None,
+        geo: None,
+        duration: None,
+        class: None,
+        contact: None,
+        comment: None,
+        alarms: Vec::new(),
+        etag: None,
+        href: None,
+        calendar_path: None,
+    };
+
+    Ok(vevent)
+}
+
+fn parse_datetime_with_tz(datetime_str: &str, tzid: Option<&str>) -> Option<DateTime<Utc>> {
+    use chrono::TimeZone;
+    use chrono_tz::Tz;
+    
+    
+    // Try various datetime formats commonly found in ICS files
+    
+    // Format: 20231201T103000Z (UTC) - handle as naive datetime first
+    if datetime_str.ends_with('Z') {
+        let datetime_without_z = &datetime_str[..datetime_str.len()-1];
+        if let Ok(naive_dt) = chrono::NaiveDateTime::parse_from_str(datetime_without_z, "%Y%m%dT%H%M%S") {
+            return Some(naive_dt.and_utc());
+        }
+    }
+
+    // Format: 20231201T103000-0500 (with timezone offset)
+    if let Ok(dt) = DateTime::parse_from_str(datetime_str, "%Y%m%dT%H%M%S%z") {
+        return Some(dt.with_timezone(&Utc));
+    }
+
+    // Format: 2023-12-01T10:30:00Z (ISO format)
+    if let Ok(dt) = DateTime::parse_from_str(datetime_str, "%Y-%m-%dT%H:%M:%SZ") {
+        return Some(dt.with_timezone(&Utc));
+    }
+
+    // Handle naive datetime with timezone parameter
+    let naive_dt = if let Ok(dt) = chrono::NaiveDateTime::parse_from_str(datetime_str, "%Y%m%dT%H%M%S") {
+        Some(dt)
+    } else if let Ok(dt) = chrono::NaiveDateTime::parse_from_str(datetime_str, "%Y-%m-%dT%H:%M:%S") {
+        Some(dt)
+    } else {
+        None
+    };
+
+    if let Some(naive_dt) = naive_dt {
+        // If TZID is provided, try to parse it
+        if let Some(tzid_str) = tzid {
+            // Handle common timezone formats
+            let tz_result = if tzid_str.starts_with("/mozilla.org/") {
+                // Mozilla/Thunderbird format: /mozilla.org/20070129_1/Europe/London
+                tzid_str.split('/').last().and_then(|tz_name| tz_name.parse::<Tz>().ok())
+            } else if tzid_str.contains('/') {
+                // Standard timezone format: America/New_York, Europe/London
+                tzid_str.parse::<Tz>().ok()
+            } else {
+                // Try common abbreviations and Windows timezone names
+                match tzid_str {
+                    // Standard abbreviations
+                    "EST" => Some(Tz::America__New_York),
+                    "PST" => Some(Tz::America__Los_Angeles),
+                    "MST" => Some(Tz::America__Denver), 
+                    "CST" => Some(Tz::America__Chicago),
+                    
+                    // North America - Windows timezone names to IANA mapping
+                    "Mountain Standard Time" => Some(Tz::America__Denver),
+                    "Eastern Standard Time" => Some(Tz::America__New_York),
+                    "Central Standard Time" => Some(Tz::America__Chicago),
+                    "Pacific Standard Time" => Some(Tz::America__Los_Angeles),
+                    "Mountain Daylight Time" => Some(Tz::America__Denver),
+                    "Eastern Daylight Time" => Some(Tz::America__New_York),
+                    "Central Daylight Time" => Some(Tz::America__Chicago),
+                    "Pacific Daylight Time" => Some(Tz::America__Los_Angeles),
+                    "Hawaiian Standard Time" => Some(Tz::Pacific__Honolulu),
+                    "Alaskan Standard Time" => Some(Tz::America__Anchorage),
+                    "Alaskan Daylight Time" => Some(Tz::America__Anchorage),
+                    "Atlantic Standard Time" => Some(Tz::America__Halifax),
+                    "Newfoundland Standard Time" => Some(Tz::America__St_Johns),
+                    
+                    // Europe
+                    "GMT Standard Time" => Some(Tz::Europe__London),
+                    "Greenwich Standard Time" => Some(Tz::UTC),
+                    "W. Europe Standard Time" => Some(Tz::Europe__Berlin),
+                    "Central Europe Standard Time" => Some(Tz::Europe__Warsaw),
+                    "Romance Standard Time" => Some(Tz::Europe__Paris),
+                    "Central European Standard Time" => Some(Tz::Europe__Belgrade),
+                    "E. Europe Standard Time" => Some(Tz::Europe__Bucharest),
+                    "FLE Standard Time" => Some(Tz::Europe__Helsinki),
+                    "GTB Standard Time" => Some(Tz::Europe__Athens),
+                    "Russian Standard Time" => Some(Tz::Europe__Moscow),
+                    "Turkey Standard Time" => Some(Tz::Europe__Istanbul),
+                    
+                    // Asia
+                    "China Standard Time" => Some(Tz::Asia__Shanghai),
+                    "Tokyo Standard Time" => Some(Tz::Asia__Tokyo),
+                    "Korea Standard Time" => Some(Tz::Asia__Seoul),
+                    "Singapore Standard Time" => Some(Tz::Asia__Singapore),
+                    "India Standard Time" => Some(Tz::Asia__Kolkata),
+                    "Pakistan Standard Time" => Some(Tz::Asia__Karachi),
+                    "Bangladesh Standard Time" => Some(Tz::Asia__Dhaka),
+                    "Thailand Standard Time" => Some(Tz::Asia__Bangkok),
+                    "SE Asia Standard Time" => Some(Tz::Asia__Bangkok),
+                    "Myanmar Standard Time" => Some(Tz::Asia__Yangon),
+                    "Sri Lanka Standard Time" => Some(Tz::Asia__Colombo),
+                    "Nepal Standard Time" => Some(Tz::Asia__Kathmandu),
+                    "Central Asia Standard Time" => Some(Tz::Asia__Almaty),
+                    "West Asia Standard Time" => Some(Tz::Asia__Tashkent),
+                    "Afghanistan Standard Time" => Some(Tz::Asia__Kabul),
+                    "Iran Standard Time" => Some(Tz::Asia__Tehran),
+                    "Arabian Standard Time" => Some(Tz::Asia__Dubai),
+                    "Arab Standard Time" => Some(Tz::Asia__Riyadh),
+                    "Israel Standard Time" => Some(Tz::Asia__Jerusalem),
+                    "Jordan Standard Time" => Some(Tz::Asia__Amman),
+                    "Syria Standard Time" => Some(Tz::Asia__Damascus),
+                    "Middle East Standard Time" => Some(Tz::Asia__Beirut),
+                    "Egypt Standard Time" => Some(Tz::Africa__Cairo),
+                    "South Africa Standard Time" => Some(Tz::Africa__Johannesburg),
+                    "E. Africa Standard Time" => Some(Tz::Africa__Nairobi),
+                    "W. Central Africa Standard Time" => Some(Tz::Africa__Lagos),
+                    
+                    // Asia Pacific
+                    "AUS Eastern Standard Time" => Some(Tz::Australia__Sydney),
+                    "AUS Central Standard Time" => Some(Tz::Australia__Darwin),
+                    "W. Australia Standard Time" => Some(Tz::Australia__Perth),
+                    "Tasmania Standard Time" => Some(Tz::Australia__Hobart),
+                    "New Zealand Standard Time" => Some(Tz::Pacific__Auckland),
+                    "Fiji Standard Time" => Some(Tz::Pacific__Fiji),
+                    "Tonga Standard Time" => Some(Tz::Pacific__Tongatapu),
+                    
+                    // South America
+                    "Argentina Standard Time" => Some(Tz::America__Buenos_Aires),
+                    "E. South America Standard Time" => Some(Tz::America__Sao_Paulo),
+                    "SA Eastern Standard Time" => Some(Tz::America__Cayenne),
+                    "SA Pacific Standard Time" => Some(Tz::America__Bogota),
+                    "SA Western Standard Time" => Some(Tz::America__La_Paz),
+                    "Pacific SA Standard Time" => Some(Tz::America__Santiago),
+                    "Venezuela Standard Time" => Some(Tz::America__Caracas),
+                    "Montevideo Standard Time" => Some(Tz::America__Montevideo),
+                    
+                    // Try parsing as IANA name
+                    _ => tzid_str.parse::<Tz>().ok()
+                }
+            };
+
+            if let Some(tz) = tz_result {
+                if let Some(dt_with_tz) = tz.from_local_datetime(&naive_dt).single() {
+                    return Some(dt_with_tz.with_timezone(&Utc));
+                }
+            }
+        }
+        
+        // If no timezone info or parsing failed, treat as UTC (safer than local time assumptions)
+        return Some(chrono::TimeZone::from_utc_datetime(&Utc, &naive_dt));
+    }
+
+    None
+}
+
+/// Deduplicate events based on UID, start time, and summary
+/// Some calendar systems (like Outlook) may include duplicate events in ICS feeds
+/// This includes both exact duplicates and recurring event instances that would be
+/// generated by existing RRULE patterns, and events with same title but different
+/// RRULE patterns that should be consolidated
+fn deduplicate_events(mut events: Vec<VEvent>) -> Vec<VEvent> {
+    use std::collections::HashMap;
+    
+    
+    // First pass: Group by UID and prefer recurring events over single events with same UID
+    let mut uid_groups: HashMap<String, Vec<VEvent>> = HashMap::new();
+    
+    for event in events.drain(..) {
+        
+        uid_groups.entry(event.uid.clone()).or_insert_with(Vec::new).push(event);
+    }
+    
+    let mut uid_deduplicated_events = Vec::new();
+    
+    for (_uid, mut events_with_uid) in uid_groups.drain() {
+        if events_with_uid.len() == 1 {
+            // Only one event with this UID, keep it
+            uid_deduplicated_events.push(events_with_uid.into_iter().next().unwrap());
+        } else {
+            // Multiple events with same UID - prefer recurring over non-recurring
+            
+            // Sort by preference: recurring events first, then by completeness
+            events_with_uid.sort_by(|a, b| {
+                let a_has_rrule = a.rrule.is_some();
+                let b_has_rrule = b.rrule.is_some();
+                
+                match (a_has_rrule, b_has_rrule) {
+                    (true, false) => std::cmp::Ordering::Less,   // a (recurring) comes first
+                    (false, true) => std::cmp::Ordering::Greater, // b (recurring) comes first
+                    _ => {
+                        // Both same type (both recurring or both single) - compare by completeness
+                        event_completeness_score(b).cmp(&event_completeness_score(a))
+                    }
+                }
+            });
+            
+            // Keep the first (preferred) event
+            let preferred_event = events_with_uid.into_iter().next().unwrap();
+            uid_deduplicated_events.push(preferred_event);
+        }
+    }
+    
+    // Second pass: separate recurring and single events from UID-deduplicated set
+    let mut recurring_events = Vec::new();
+    let mut single_events = Vec::new();
+    
+    for event in uid_deduplicated_events.drain(..) {
+        if event.rrule.is_some() {
+            recurring_events.push(event);
+        } else {
+            single_events.push(event);
+        }
+    }
+    
+    // Third pass: Group recurring events by normalized title and consolidate different RRULE patterns
+    let mut title_groups: HashMap<String, Vec<VEvent>> = HashMap::new();
+    
+    for event in recurring_events.drain(..) {
+        let title = normalize_title(event.summary.as_ref().unwrap_or(&String::new()));
+        title_groups.entry(title).or_insert_with(Vec::new).push(event);
+    }
+    
+    let mut deduplicated_recurring = Vec::new();
+    
+    for (_title, events_with_title) in title_groups.drain() {
+        if events_with_title.len() == 1 {
+            // Single event with this title, keep as-is
+            deduplicated_recurring.push(events_with_title.into_iter().next().unwrap());
+        } else {
+            // Multiple events with same title - consolidate or deduplicate
+            
+            // Check if these are actually different recurring patterns for the same logical event
+            let consolidated = consolidate_same_title_events(events_with_title);
+            deduplicated_recurring.extend(consolidated);
+        }
+    }
+    
+    // Fourth pass: filter single events, removing those that would be generated by recurring events
+    let mut deduplicated_single = Vec::new();
+    let mut seen_single: HashMap<String, usize> = HashMap::new();
+    
+    for event in single_events.drain(..) {
+        let normalized_title = normalize_title(event.summary.as_ref().unwrap_or(&String::new()));
+        let dedup_key = format!(
+            "{}|{}", 
+            event.dtstart.format("%Y%m%dT%H%M%S"),
+            normalized_title
+        );
+        
+        // First check for exact duplicates among single events
+        if let Some(&existing_index) = seen_single.get(&dedup_key) {
+            let existing_event: &VEvent = &deduplicated_single[existing_index];
+            let current_completeness = event_completeness_score(&event);
+            let existing_completeness = event_completeness_score(existing_event);
+            
+            if current_completeness > existing_completeness {
+                deduplicated_single[existing_index] = event;
+            } else {
+                // Discarding duplicate single event - keeping existing
+            }
+            continue;
+        }
+        
+        // Check if this single event would be generated by any recurring event
+        let is_rrule_generated = deduplicated_recurring.iter().any(|recurring_event| {
+            // Check if this single event matches the recurring event's pattern (use normalized titles)
+            let single_title = normalize_title(event.summary.as_ref().unwrap_or(&String::new()));
+            let recurring_title = normalize_title(recurring_event.summary.as_ref().unwrap_or(&String::new()));
+            
+            if single_title != recurring_title {
+                return false; // Different events
+            }
+            
+            // Check if this single event would be generated by the recurring event
+            would_event_be_generated_by_rrule(recurring_event, &event)
+        });
+        
+        if is_rrule_generated {
+        } else {
+            // This is a unique single event
+            seen_single.insert(dedup_key, deduplicated_single.len());
+            deduplicated_single.push(event);
+        }
+    }
+    
+    // Combine recurring and single events
+    let mut result = deduplicated_recurring;
+    result.extend(deduplicated_single);
+    
+    
+    result
+}
+
+/// Normalize title for grouping similar events
+fn normalize_title(title: &str) -> String {
+    title.trim()
+        .to_lowercase()
+        .chars()
+        .filter(|c| c.is_alphanumeric() || c.is_whitespace())
+        .collect::<String>()
+        .split_whitespace()
+        .collect::<Vec<&str>>()
+        .join(" ")
+}
+
+/// Consolidate events with the same title but potentially different RRULE patterns
+/// This handles cases where calendar systems provide multiple recurring definitions
+/// for the same logical meeting (e.g., one RRULE for Tuesdays, another for Thursdays)
+fn consolidate_same_title_events(events: Vec<VEvent>) -> Vec<VEvent> {
+    if events.is_empty() {
+        return events;
+    }
+    
+    // Log the RRULEs we're working with
+    
+    // Check if all events have similar time patterns and could be consolidated
+    let first_event = &events[0];
+    let base_time = first_event.dtstart.time();
+    let base_duration = if let Some(end) = first_event.dtend {
+        Some(end.signed_duration_since(first_event.dtstart))
+    } else {
+        None
+    };
+    
+    // Check if all events have the same time and duration
+    let can_consolidate = events.iter().all(|event| {
+        let same_time = event.dtstart.time() == base_time;
+        let same_duration = match (event.dtend, base_duration) {
+            (Some(end), Some(base_dur)) => end.signed_duration_since(event.dtstart) == base_dur,
+            (None, None) => true,
+            _ => false,
+        };
+        same_time && same_duration
+    });
+    
+    if !can_consolidate {
+        // Just deduplicate exact duplicates
+        return deduplicate_exact_recurring_events(events);
+    }
+    
+    // Try to detect if these are complementary weekly patterns
+    let weekly_events: Vec<_> = events.iter()
+        .filter(|e| e.rrule.as_ref().map_or(false, |r| r.contains("FREQ=WEEKLY")))
+        .collect();
+    
+    if weekly_events.len() >= 2 && weekly_events.len() == events.len() {
+        // All events are weekly - try to consolidate into a single multi-day weekly pattern
+        if let Some(consolidated) = consolidate_weekly_patterns(&events) {
+            return vec![consolidated];
+        }
+    }
+    
+    // If we can't consolidate, just deduplicate exact matches and keep the most complete one
+    let deduplicated = deduplicate_exact_recurring_events(events);
+    
+    // If we still have multiple events, keep only the most complete one
+    if deduplicated.len() > 1 {
+        let best_event = deduplicated.into_iter()
+            .max_by_key(|e| event_completeness_score(e))
+            .unwrap();
+        
+        println!("🎯 Kept most complete event: '{}'", 
+            best_event.summary.as_ref().unwrap_or(&"No Title".to_string())
+        );
+        vec![best_event]
+    } else {
+        deduplicated
+    }
+}
+
+/// Deduplicate exact recurring event matches
+fn deduplicate_exact_recurring_events(events: Vec<VEvent>) -> Vec<VEvent> {
+    use std::collections::HashMap;
+    
+    let mut seen: HashMap<String, usize> = HashMap::new();
+    let mut deduplicated = Vec::new();
+    
+    for event in events {
+        let dedup_key = format!(
+            "{}|{}|{}", 
+            event.dtstart.format("%Y%m%dT%H%M%S"),
+            event.summary.as_ref().unwrap_or(&String::new()),
+            event.rrule.as_ref().unwrap_or(&String::new())
+        );
+        
+        if let Some(&existing_index) = seen.get(&dedup_key) {
+            let existing_event: &VEvent = &deduplicated[existing_index];
+            let current_completeness = event_completeness_score(&event);
+            let existing_completeness = event_completeness_score(existing_event);
+            
+            if current_completeness > existing_completeness {
+                println!("🔄 Replacing exact duplicate: Keeping more complete event");
+                deduplicated[existing_index] = event;
+            }
+        } else {
+            seen.insert(dedup_key, deduplicated.len());
+            deduplicated.push(event);
+        }
+    }
+    
+    deduplicated
+}
+
+/// Attempt to consolidate multiple weekly RRULE patterns into a single pattern
+fn consolidate_weekly_patterns(events: &[VEvent]) -> Option<VEvent> {
+    use std::collections::HashSet;
+    
+    let mut all_days = HashSet::new();
+    let mut base_event = None;
+    
+    for event in events {
+        let Some(rrule) = &event.rrule else { continue; };
+        
+        if !rrule.contains("FREQ=WEEKLY") {
+            continue;
+        }
+        
+        // Extract BYDAY if present
+        if let Some(byday_part) = rrule.split(';').find(|part| part.starts_with("BYDAY=")) {
+            let days_str = byday_part.strip_prefix("BYDAY=").unwrap_or("");
+            for day in days_str.split(',') {
+                all_days.insert(day.trim().to_string());
+            }
+        } else {
+            // If no BYDAY specified, use the weekday from the start date
+            let weekday = match event.dtstart.weekday() {
+                chrono::Weekday::Mon => "MO",
+                chrono::Weekday::Tue => "TU", 
+                chrono::Weekday::Wed => "WE",
+                chrono::Weekday::Thu => "TH",
+                chrono::Weekday::Fri => "FR",
+                chrono::Weekday::Sat => "SA",
+                chrono::Weekday::Sun => "SU",
+            };
+            all_days.insert(weekday.to_string());
+        }
+        
+        // Use the first event as the base (we already know they have same time/duration)
+        if base_event.is_none() {
+            base_event = Some(event.clone());
+        }
+    }
+    
+    if all_days.is_empty() || base_event.is_none() {
+        return None;
+    }
+    
+    // Create consolidated RRULE
+    let mut base = base_event.unwrap();
+    let days_list: Vec<_> = all_days.into_iter().collect();
+    let byday_str = days_list.join(",");
+    
+    // Build new RRULE with consolidated BYDAY
+    let new_rrule = if let Some(existing_rrule) = &base.rrule {
+        // Remove existing BYDAY and add our consolidated one
+        let parts: Vec<_> = existing_rrule.split(';')
+            .filter(|part| !part.starts_with("BYDAY="))
+            .collect();
+        format!("{};BYDAY={}", parts.join(";"), byday_str)
+    } else {
+        format!("FREQ=WEEKLY;BYDAY={}", byday_str)
+    };
+    
+    base.rrule = Some(new_rrule);
+    
+    println!("🔗 Consolidated weekly pattern: BYDAY={}", byday_str);
+    Some(base)
+}
+
+/// Check if a single event would be generated by a recurring event's RRULE
+fn would_event_be_generated_by_rrule(recurring_event: &VEvent, single_event: &VEvent) -> bool {
+    let Some(rrule) = &recurring_event.rrule else {
+        return false; // No RRULE to check against
+    };
+    
+    // Parse basic RRULE patterns
+    if rrule.contains("FREQ=DAILY") {
+        // Daily recurrence
+        let interval = extract_interval_from_rrule(rrule).unwrap_or(1);
+        let days_diff = (single_event.dtstart.date() - recurring_event.dtstart.date()).num_days();
+        
+        if days_diff >= 0 && days_diff % interval as i64 == 0 {
+            // Check if times match (allowing for timezone differences within same day)
+            let recurring_time = recurring_event.dtstart.time();
+            let single_time = single_event.dtstart.time();
+            return recurring_time == single_time;
+        }
+    } else if rrule.contains("FREQ=WEEKLY") {
+        // Weekly recurrence
+        let interval = extract_interval_from_rrule(rrule).unwrap_or(1);
+        let days_diff = (single_event.dtstart.date() - recurring_event.dtstart.date()).num_days();
+        
+        // First check if it's the same day of week and time
+        let recurring_weekday = recurring_event.dtstart.weekday();
+        let single_weekday = single_event.dtstart.weekday();
+        let recurring_time = recurring_event.dtstart.time();
+        let single_time = single_event.dtstart.time();
+        
+        if recurring_weekday == single_weekday && recurring_time == single_time && days_diff >= 0 {
+            // Calculate how many weeks apart they are
+            let weeks_diff = days_diff / 7;
+            // Check if this falls on an interval boundary
+            return weeks_diff % interval as i64 == 0;
+        }
+    } else if rrule.contains("FREQ=MONTHLY") {
+        // Monthly recurrence - simplified check
+        let months_diff = (single_event.dtstart.year() - recurring_event.dtstart.year()) * 12 
+            + (single_event.dtstart.month() as i32 - recurring_event.dtstart.month() as i32);
+        
+        if months_diff >= 0 {
+            let interval = extract_interval_from_rrule(rrule).unwrap_or(1) as i32;
+            if months_diff % interval == 0 {
+                // Same day of month and time
+                return recurring_event.dtstart.day() == single_event.dtstart.day()
+                    && recurring_event.dtstart.time() == single_event.dtstart.time();
+            }
+        }
+    }
+    
+    false
+}
+
+/// Extract INTERVAL value from RRULE string, defaulting to 1 if not found
+fn extract_interval_from_rrule(rrule: &str) -> Option<u32> {
+    for part in rrule.split(';') {
+        if part.starts_with("INTERVAL=") {
+            return part.strip_prefix("INTERVAL=")
+                .and_then(|s| s.parse().ok());
+        }
+    }
+    Some(1) // Default interval is 1 if not specified
+}
+
+/// Calculate a completeness score for an event based on how many optional fields are filled
+fn event_completeness_score(event: &VEvent) -> u32 {
+    let mut score = 0;
+    
+    if event.summary.is_some() { score += 1; }
+    if event.description.is_some() { score += 1; }
+    if event.location.is_some() { score += 1; }
+    if event.dtend.is_some() { score += 1; }
+    if event.rrule.is_some() { score += 1; }
+    if !event.categories.is_empty() { score += 1; }
+    if !event.alarms.is_empty() { score += 1; }
+    if event.organizer.is_some() { score += 1; }
+    if !event.attendees.is_empty() { score += 1; }
+    
+    score
+}

backend/src/handlers/mod.rs

@@ -0,0 +1,15 @@
+pub mod auth;
+pub mod calendar;
+pub mod events;
+pub mod external_calendars;
+pub mod ics_fetcher;
+pub mod preferences;
+pub mod series;
+
+pub use auth::*;
+pub use calendar::*;
+pub use events::*;
+pub use external_calendars::*;
+pub use ics_fetcher::*;
+pub use preferences::*;
+pub use series::*;

backend/src/handlers/series.rs

@@ -14,6 +14,33 @@ use calendar_models::{EventClass, EventStatus, VEvent};
 
 use super::auth::{extract_bearer_token, extract_password_header};
 
+fn parse_event_datetime_local(
+    date_str: &str,
+    time_str: &str,
+    all_day: bool,
+) -> Result<chrono::NaiveDateTime, String> {
+    use chrono::{NaiveDate, NaiveDateTime, NaiveTime};
+
+    // Parse the date
+    let date = NaiveDate::parse_from_str(date_str, "%Y-%m-%d")
+        .map_err(|_| format!("Invalid date format: {}. Expected YYYY-MM-DD", date_str))?;
+
+    if all_day {
+        // For all-day events, use start of day
+        let datetime = date
+            .and_hms_opt(0, 0, 0)
+            .ok_or_else(|| "Failed to create start-of-day datetime".to_string())?;
+        Ok(datetime)
+    } else {
+        // Parse the time
+        let time = NaiveTime::parse_from_str(time_str, "%H:%M")
+            .map_err(|_| format!("Invalid time format: {}. Expected HH:MM", time_str))?;
+
+        // Combine date and time - now keeping as local time
+        Ok(NaiveDateTime::new(date, time))
+    }
+}
+
 /// Create a new recurring event series
 pub async fn create_event_series(
     State(state): State<Arc<AppState>>,
@@ -106,92 +133,27 @@ pub async fn create_event_series(
 
     println!("📅 Using calendar path: {}", calendar_path);
 
-    // Parse datetime components
-    let start_date =
-        chrono::NaiveDate::parse_from_str(&request.start_date, "%Y-%m-%d").map_err(|_| {
-            ApiError::BadRequest("Invalid start_date format. Expected YYYY-MM-DD".to_string())
-        })?;
+    // Parse dates and times as local times (no UTC conversion)
+    let start_datetime = parse_event_datetime_local(&request.start_date, &request.start_time, request.all_day)
+        .map_err(|e| ApiError::BadRequest(format!("Invalid start date/time: {}", e)))?;
 
-    let (start_datetime, end_datetime) = if request.all_day {
-        // For all-day events, use the dates as-is
-        let start_dt = start_date
-            .and_hms_opt(0, 0, 0)
-            .ok_or_else(|| ApiError::BadRequest("Invalid start date".to_string()))?;
+    let end_datetime = parse_event_datetime_local(&request.end_date, &request.end_time, request.all_day)
+        .map_err(|e| ApiError::BadRequest(format!("Invalid end date/time: {}", e)))?;
 
-        let end_date = if !request.end_date.is_empty() {
-            chrono::NaiveDate::parse_from_str(&request.end_date, "%Y-%m-%d").map_err(|_| {
-                ApiError::BadRequest("Invalid end_date format. Expected YYYY-MM-DD".to_string())
-            })?
-        } else {
-            start_date
-        };
-
-        let end_dt = end_date
-            .and_hms_opt(23, 59, 59)
-            .ok_or_else(|| ApiError::BadRequest("Invalid end date".to_string()))?;
-
-        // Convert from local time to UTC
-        let start_local = chrono::Local.from_local_datetime(&start_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous start datetime".to_string()))?;
-        let end_local = chrono::Local.from_local_datetime(&end_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous end datetime".to_string()))?;
-        
-        (
-            start_local.with_timezone(&chrono::Utc),
-            end_local.with_timezone(&chrono::Utc),
-        )
-    } else {
-        // Parse times for timed events
-        let start_time = if !request.start_time.is_empty() {
-            chrono::NaiveTime::parse_from_str(&request.start_time, "%H:%M").map_err(|_| {
-                ApiError::BadRequest("Invalid start_time format. Expected HH:MM".to_string())
-            })?
-        } else {
-            chrono::NaiveTime::from_hms_opt(9, 0, 0).unwrap() // Default to 9 AM
-        };
-
-        let end_time = if !request.end_time.is_empty() {
-            chrono::NaiveTime::parse_from_str(&request.end_time, "%H:%M").map_err(|_| {
-                ApiError::BadRequest("Invalid end_time format. Expected HH:MM".to_string())
-            })?
-        } else {
-            chrono::NaiveTime::from_hms_opt(10, 0, 0).unwrap() // Default to 1 hour duration
-        };
-
-        let start_dt = start_date.and_time(start_time);
-        let end_dt = if !request.end_date.is_empty() {
-            let end_date = chrono::NaiveDate::parse_from_str(&request.end_date, "%Y-%m-%d")
-                .map_err(|_| {
-                    ApiError::BadRequest("Invalid end_date format. Expected YYYY-MM-DD".to_string())
-                })?;
-            end_date.and_time(end_time)
-        } else {
-            start_date.and_time(end_time)
-        };
-
-        // Convert from local time to UTC
-        let start_local = chrono::Local.from_local_datetime(&start_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous start datetime".to_string()))?;
-        let end_local = chrono::Local.from_local_datetime(&end_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous end datetime".to_string()))?;
-        
-        (
-            start_local.with_timezone(&chrono::Utc),
-            end_local.with_timezone(&chrono::Utc),
-        )
-    };
+    // Note: Frontend already converts inclusive UI dates to exclusive dates for all-day events
+    // No additional conversion needed here
 
     // Generate a unique UID for the series
     let uid = format!("series-{}", uuid::Uuid::new_v4().to_string());
 
-    // Create the VEvent for the series
+    // Create the VEvent for the series with local times
     let mut event = VEvent::new(uid.clone(), start_datetime);
     event.dtend = Some(end_datetime);
     event.all_day = request.all_day; // Set the all_day flag properly
+    
+    // Set timezone information from client
+    event.dtstart_tzid = Some(request.timezone.clone());
+    event.dtend_tzid = Some(request.timezone.clone());
     event.summary = if request.title.trim().is_empty() {
         None
     } else {
@@ -262,9 +224,11 @@ pub async fn update_event_series(
     Json(request): Json<UpdateEventSeriesRequest>,
 ) -> Result<Json<UpdateEventSeriesResponse>, ApiError> {
     println!(
-        "🔄 Update event series request received: series_uid='{}', update_scope='{}'",
-        request.series_uid, request.update_scope
+        "🔄 Update event series request received: series_uid='{}', update_scope='{}', recurrence_count={:?}, recurrence_end_date={:?}",
+        request.series_uid, request.update_scope, request.recurrence_count, request.recurrence_end_date
     );
+    println!("🕐 SERIES: Received start_date: '{}', start_time: '{}', timezone: '{}'", 
+             request.start_date, request.start_time, request.timezone);
 
     // Extract and verify token
     let token = extract_bearer_token(&headers)?;
@@ -380,7 +344,7 @@ pub async fn update_event_series(
     );
 
     // Parse datetime components for the update
-    let original_start_date = existing_event.dtstart.date_naive();
+    let original_start_date = existing_event.dtstart.date();
 
     // For "this_and_future" and "this_only" updates, use the occurrence date for the modified event
     // For "all_in_series" updates, preserve the original series start date
@@ -397,8 +361,9 @@ pub async fn update_event_series(
     };
 
     let (start_datetime, end_datetime) = if request.all_day {
+        // For all-day events, use noon UTC to avoid timezone boundary issues
         let start_dt = start_date
-            .and_hms_opt(0, 0, 0)
+            .and_hms_opt(12, 0, 0)
             .ok_or_else(|| ApiError::BadRequest("Invalid start date".to_string()))?;
 
         // For all-day events, also preserve the original date pattern
@@ -406,7 +371,7 @@ pub async fn update_event_series(
             // Calculate the duration from the original event
             let original_duration_days = existing_event
                 .dtend
-                .map(|end| (end.date_naive() - existing_event.dtstart.date_naive()).num_days())
+                .map(|end| (end.date() - existing_event.dtstart.date()).num_days())
                 .unwrap_or(0);
             start_date + chrono::Duration::days(original_duration_days)
         } else {
@@ -414,21 +379,11 @@ pub async fn update_event_series(
         };
 
         let end_dt = end_date
-            .and_hms_opt(23, 59, 59)
+            .and_hms_opt(12, 0, 0)
             .ok_or_else(|| ApiError::BadRequest("Invalid end date".to_string()))?;
 
-        // Convert from local time to UTC
-        let start_local = chrono::Local.from_local_datetime(&start_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous start datetime".to_string()))?;
-        let end_local = chrono::Local.from_local_datetime(&end_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous end datetime".to_string()))?;
-        
-        (
-            start_local.with_timezone(&chrono::Utc),
-            end_local.with_timezone(&chrono::Utc),
-        )
+        // For all-day events, use local times directly
+        (start_dt, end_dt)
     } else {
         let start_time = if !request.start_time.is_empty() {
             chrono::NaiveTime::parse_from_str(&request.start_time, "%H:%M").map_err(|_| {
@@ -459,21 +414,11 @@ pub async fn update_event_series(
                 .dtend
                 .map(|end| end - existing_event.dtstart)
                 .unwrap_or_else(|| chrono::Duration::hours(1));
-            (chrono::Utc.from_utc_datetime(&start_dt) + original_duration).naive_utc()
+            start_dt + original_duration
         };
 
-        // Convert from local time to UTC
-        let start_local = chrono::Local.from_local_datetime(&start_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous start datetime".to_string()))?;
-        let end_local = chrono::Local.from_local_datetime(&end_dt)
-            .single()
-            .ok_or_else(|| ApiError::BadRequest("Ambiguous end datetime".to_string()))?;
-        
-        (
-            start_local.with_timezone(&chrono::Utc),
-            end_local.with_timezone(&chrono::Utc),
-        )
+        // Frontend now sends local times, so use them directly
+        (start_dt, end_dt)
     };
 
     // Handle different update scopes
@@ -520,13 +465,10 @@ pub async fn update_event_series(
     };
 
     // Update the event on the CalDAV server using the original event's href
-    println!("📤 Updating event on CalDAV server...");
     let event_href = existing_event
         .href
         .as_ref()
         .ok_or_else(|| ApiError::Internal("Event missing href for update".to_string()))?;
-    println!("📤 Using event href: {}", event_href);
-    println!("📤 Calendar path: {}", calendar_path);
 
     match client
         .update_event(&calendar_path, &updated_event, event_href)
@@ -720,8 +662,8 @@ fn build_series_rrule_with_freq(
 fn update_entire_series(
     existing_event: &mut VEvent,
     request: &UpdateEventSeriesRequest,
-    start_datetime: chrono::DateTime<chrono::Utc>,
-    end_datetime: chrono::DateTime<chrono::Utc>,
+    start_datetime: chrono::NaiveDateTime,
+    end_datetime: chrono::NaiveDateTime,
 ) -> Result<(VEvent, u32), ApiError> {
     // Clone the existing event to preserve all metadata
     let mut updated_event = existing_event.clone();
@@ -729,6 +671,8 @@ fn update_entire_series(
     // Update only the modified properties from the request
     updated_event.dtstart = start_datetime;
     updated_event.dtend = Some(end_datetime);
+    updated_event.dtstart_tzid = Some(request.timezone.clone());
+    updated_event.dtend_tzid = Some(request.timezone.clone());
     updated_event.summary = if request.title.trim().is_empty() {
         existing_event.summary.clone() // Keep original if empty
     } else {
@@ -761,13 +705,41 @@ fn update_entire_series(
 
     // Update timestamps
     let now = chrono::Utc::now();
+    let now_naive = now.naive_utc();
     updated_event.dtstamp = now;
-    updated_event.last_modified = Some(now);
+    updated_event.last_modified = Some(now_naive);
     // Keep original created timestamp to preserve event history
 
-    // For simple updates (like drag operations), preserve the existing RRULE
-    // For more complex updates, we might need to regenerate it, but for now keep it simple
-    // updated_event.rrule remains unchanged from the clone
+    // Update RRULE if recurrence parameters are provided
+    if let Some(ref existing_rrule) = updated_event.rrule {
+        let mut new_rrule = existing_rrule.clone();
+        println!("🔄 Original RRULE: {}", existing_rrule);
+        
+        // Update COUNT if provided
+        if let Some(count) = request.recurrence_count {
+            println!("🔄 Updating RRULE with new COUNT: {}", count);
+            // Remove old COUNT or UNTIL parameters
+            new_rrule = new_rrule.split(';')
+                .filter(|part| !part.starts_with("COUNT=") && !part.starts_with("UNTIL="))
+                .collect::<Vec<_>>()
+                .join(";");
+            // Add new COUNT
+            new_rrule = format!("{};COUNT={}", new_rrule, count);
+        } else if let Some(ref end_date) = request.recurrence_end_date {
+            println!("🔄 Updating RRULE with new UNTIL: {}", end_date);
+            // Remove old COUNT or UNTIL parameters
+            new_rrule = new_rrule.split(';')
+                .filter(|part| !part.starts_with("COUNT=") && !part.starts_with("UNTIL="))
+                .collect::<Vec<_>>()
+                .join(";");
+            // Add new UNTIL (convert YYYY-MM-DD to YYYYMMDD format)
+            let until_date = end_date.replace("-", "");
+            new_rrule = format!("{};UNTIL={}", new_rrule, until_date);
+        }
+        
+        println!("🔄 Updated RRULE: {}", new_rrule);
+        updated_event.rrule = Some(new_rrule);
+    }
 
     // Copy the updated event back to existing_event for the main handler
     *existing_event = updated_event.clone();
@@ -823,8 +795,8 @@ fn update_entire_series(
 async fn update_this_and_future(
     existing_event: &mut VEvent,
     request: &UpdateEventSeriesRequest,
-    start_datetime: chrono::DateTime<chrono::Utc>,
-    end_datetime: chrono::DateTime<chrono::Utc>,
+    start_datetime: chrono::NaiveDateTime,
+    end_datetime: chrono::NaiveDateTime,
     client: &CalDAVClient,
     calendar_path: &str,
 ) -> Result<(VEvent, u32), ApiError> {
@@ -872,6 +844,8 @@ async fn update_this_and_future(
     new_series.uid = new_series_uid.clone();
     new_series.dtstart = start_datetime;
     new_series.dtend = Some(end_datetime);
+    new_series.dtstart_tzid = Some(request.timezone.clone());
+    new_series.dtend_tzid = Some(request.timezone.clone());
     new_series.summary = if request.title.trim().is_empty() {
         None
     } else {
@@ -904,9 +878,10 @@ async fn update_this_and_future(
 
     // Update timestamps
     let now = chrono::Utc::now();
+    let now_naive = now.naive_utc();
     new_series.dtstamp = now;
-    new_series.created = Some(now);
-    new_series.last_modified = Some(now);
+    new_series.created = Some(now_naive);
+    new_series.last_modified = Some(now_naive);
     new_series.href = None; // Will be set when created
 
     println!(
@@ -934,8 +909,8 @@ async fn update_this_and_future(
 async fn update_single_occurrence(
     existing_event: &mut VEvent,
     request: &UpdateEventSeriesRequest,
-    start_datetime: chrono::DateTime<chrono::Utc>,
-    end_datetime: chrono::DateTime<chrono::Utc>,
+    start_datetime: chrono::NaiveDateTime,
+    end_datetime: chrono::NaiveDateTime,
     client: &CalDAVClient,
     calendar_path: &str,
     _original_event_href: &str,
@@ -960,21 +935,20 @@ async fn update_single_occurrence(
     // Create the EXDATE datetime using the original event's time
     let original_time = existing_event.dtstart.time();
     let exception_datetime = exception_date.and_time(original_time);
-    let exception_utc = chrono::Utc.from_utc_datetime(&exception_datetime);
 
     // Add the exception date to the original series
     println!(
         "📝 BEFORE adding EXDATE: existing_event.exdate = {:?}",
         existing_event.exdate
     );
-    existing_event.exdate.push(exception_utc);
+    existing_event.exdate.push(exception_datetime);
     println!(
         "📝 AFTER adding EXDATE: existing_event.exdate = {:?}",
         existing_event.exdate
     );
     println!(
         "🚫 Added EXDATE for single occurrence modification: {}",
-        exception_utc.format("%Y-%m-%d %H:%M:%S")
+        exception_datetime.format("%Y-%m-%d %H:%M:%S")
     );
 
     // Create exception event by cloning the existing event to preserve all metadata
@@ -986,6 +960,8 @@ async fn update_single_occurrence(
     // Update the modified properties from the request
     exception_event.dtstart = start_datetime;
     exception_event.dtend = Some(end_datetime);
+    exception_event.dtstart_tzid = Some(request.timezone.clone());
+    exception_event.dtend_tzid = Some(request.timezone.clone());
     exception_event.summary = if request.title.trim().is_empty() {
         existing_event.summary.clone() // Keep original if empty
     } else {
@@ -1018,8 +994,9 @@ async fn update_single_occurrence(
 
     // Update timestamps for the exception event
     let now = chrono::Utc::now();
+    let now_naive = now.naive_utc();
     exception_event.dtstamp = now;
-    exception_event.last_modified = Some(now);
+    exception_event.last_modified = Some(now_naive);
     // Keep original created timestamp to preserve event history
 
     // Set RECURRENCE-ID to point to the original occurrence
@@ -1035,7 +1012,7 @@ async fn update_single_occurrence(
 
     println!(
         "✨ Created exception event with RECURRENCE-ID: {}",
-        exception_utc.format("%Y-%m-%d %H:%M:%S")
+        exception_datetime.format("%Y-%m-%d %H:%M:%S")
     );
 
     // Create the exception event as a new event (original series will be updated by main handler)
@@ -1046,7 +1023,7 @@ async fn update_single_occurrence(
 
     println!("✅ Created exception event successfully");
 
-    // Return the original series (now with EXDATE) - main handler will update it on CalDAV
+    // Return the modified existing event with EXDATE for the main handler to update on CalDAV
     Ok((existing_event.clone(), 1)) // 1 occurrence modified (via exception)
 }
 
@@ -1163,15 +1140,14 @@ async fn delete_single_occurrence(
     // Create the EXDATE datetime (use the same time as the original event)
     let original_time = existing_event.dtstart.time();
     let exception_datetime = exception_date.and_time(original_time);
-    let exception_utc = chrono::Utc.from_utc_datetime(&exception_datetime);
 
     // Add the exception date to the event's EXDATE list
     let mut updated_event = existing_event;
-    updated_event.exdate.push(exception_utc);
+    updated_event.exdate.push(exception_datetime);
 
     println!(
         "🗑️ Added EXDATE for single occurrence deletion: {}",
-        exception_utc.format("%Y%m%dT%H%M%SZ")
+        exception_datetime.format("%Y%m%dT%H%M%S")
     );
 
     // Update the event on the CalDAV server

backend/src/lib.rs

@@ -1,6 +1,6 @@
 use axum::{
     response::Json,
-    routing::{get, post},
+    routing::{delete, get, post},
     Router,
 };
 use std::sync::Arc;
@@ -72,6 +72,12 @@ pub async fn run_server() -> Result<(), Box<dyn std::error::Error>> {
         .route("/api/preferences", get(handlers::get_preferences))
         .route("/api/preferences", post(handlers::update_preferences))
         .route("/api/auth/logout", post(handlers::logout))
+        // External calendars endpoints
+        .route("/api/external-calendars", get(handlers::get_external_calendars))
+        .route("/api/external-calendars", post(handlers::create_external_calendar))
+        .route("/api/external-calendars/:id", post(handlers::update_external_calendar))
+        .route("/api/external-calendars/:id", delete(handlers::delete_external_calendar))
+        .route("/api/external-calendars/:id/events", get(handlers::fetch_external_calendar_events))
         .layer(
             CorsLayer::new()
                 .allow_origin(Any)

backend/src/models.rs

@@ -3,6 +3,7 @@ use axum::{
     response::{IntoResponse, Response},
     Json,
 };
+use calendar_models::VAlarm;
 use serde::{Deserialize, Serialize};
 
 // API request/response types
@@ -56,6 +57,7 @@ pub struct CalendarInfo {
     pub path: String,
     pub display_name: String,
     pub color: String,
+    pub is_visible: bool,
 }
 
 #[derive(Debug, Deserialize)]
@@ -112,10 +114,11 @@ pub struct CreateEventRequest {
     pub organizer: String,             // organizer email
     pub attendees: String,             // comma-separated attendee emails
     pub categories: String,            // comma-separated categories
-    pub reminder: String,              // reminder type
+    pub alarms: Vec<VAlarm>,           // event alarms
     pub recurrence: String,            // recurrence type
     pub recurrence_days: Vec<bool>,    // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
     pub calendar_path: Option<String>, // Optional - use first calendar if not specified
+    pub timezone: String,              // Client timezone (e.g., "+05:00", "-04:00")
 }
 
 #[derive(Debug, Serialize)]
@@ -142,11 +145,15 @@ pub struct UpdateEventRequest {
     pub organizer: String,             // organizer email
     pub attendees: String,             // comma-separated attendee emails
     pub categories: String,            // comma-separated categories
-    pub reminder: String,              // reminder type
+    pub alarms: Vec<VAlarm>,           // event alarms
     pub recurrence: String,            // recurrence type
     pub recurrence_days: Vec<bool>,    // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
+    pub recurrence_interval: Option<u32>, // Every N days/weeks/months/years
+    pub recurrence_count: Option<u32>, // Number of occurrences
+    pub recurrence_end_date: Option<String>, // When the series ends (YYYY-MM-DD)
     pub calendar_path: Option<String>, // Optional - search all calendars if not specified
     pub update_action: Option<String>, // "update_series" for recurring events
+    pub timezone: String,              // Client timezone (e.g., "+05:00", "-04:00")
     #[serde(skip_serializing_if = "Option::is_none")]
     pub until_date: Option<String>, // ISO datetime string for RRULE UNTIL clause
 }
@@ -175,7 +182,7 @@ pub struct CreateEventSeriesRequest {
     pub organizer: String,    // organizer email
     pub attendees: String,    // comma-separated attendee emails
     pub categories: String,   // comma-separated categories
-    pub reminder: String,     // reminder type
+    pub alarms: Vec<VAlarm>,  // event alarms
 
     // Series-specific fields
     pub recurrence: String, // recurrence type (daily, weekly, monthly, yearly)
@@ -184,6 +191,7 @@ pub struct CreateEventSeriesRequest {
     pub recurrence_end_date: Option<String>, // When the series ends (YYYY-MM-DD)
     pub recurrence_count: Option<u32>, // Number of occurrences
     pub calendar_path: Option<String>, // Optional - search all calendars if not specified
+    pub timezone: String,              // Client timezone (e.g., "+05:00", "-04:00")
 }
 
 #[derive(Debug, Serialize)]
@@ -212,7 +220,7 @@ pub struct UpdateEventSeriesRequest {
     pub organizer: String,    // organizer email
     pub attendees: String,    // comma-separated attendee emails
     pub categories: String,   // comma-separated categories
-    pub reminder: String,     // reminder type
+    pub alarms: Vec<VAlarm>,  // event alarms
 
     // Series-specific fields
     pub recurrence: String, // recurrence type (daily, weekly, monthly, yearly)
@@ -226,6 +234,7 @@ pub struct UpdateEventSeriesRequest {
     pub update_scope: String, // "this_only", "this_and_future", "all_in_series"
     pub occurrence_date: Option<String>, // ISO date string for specific occurrence being updated
     pub changed_fields: Option<Vec<String>>, // List of field names that were changed (for optimization)
+    pub timezone: String,              // Client timezone (e.g., "+05:00", "-04:00")
 }
 
 #[derive(Debug, Serialize)]

calendar-models/src/vevent.rs

@@ -1,7 +1,7 @@
 //! VEvent - RFC 5545 compliant calendar event structure
 
 use crate::common::*;
-use chrono::{DateTime, Duration, Utc};
+use chrono::{DateTime, Duration, NaiveDateTime, Utc};
 use serde::{Deserialize, Serialize};
 
 // ==================== VEVENT COMPONENT ====================
@@ -9,12 +9,14 @@ use serde::{Deserialize, Serialize};
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct VEvent {
     // Required properties
-    pub dtstamp: DateTime<Utc>, // Date-time stamp (DTSTAMP) - REQUIRED
+    pub dtstamp: DateTime<Utc>,          // Date-time stamp (DTSTAMP) - REQUIRED (always UTC)
     pub uid: String,                     // Unique identifier (UID) - REQUIRED
-    pub dtstart: DateTime<Utc>, // Start date-time (DTSTART) - REQUIRED
+    pub dtstart: NaiveDateTime,          // Start date-time (DTSTART) - REQUIRED (local time)
+    pub dtstart_tzid: Option<String>,    // Timezone ID for DTSTART (TZID parameter)
 
     // Optional properties (commonly used)
-    pub dtend: Option<DateTime<Utc>>, // End date-time (DTEND)
+    pub dtend: Option<NaiveDateTime>,    // End date-time (DTEND) (local time)
+    pub dtend_tzid: Option<String>,      // Timezone ID for DTEND (TZID parameter)
     pub duration: Option<Duration>,   // Duration (DURATION) - alternative to DTEND
     pub summary: Option<String>,      // Summary/title (SUMMARY)
     pub description: Option<String>,  // Description (DESCRIPTION)
@@ -43,14 +45,19 @@ pub struct VEvent {
 
     // Versioning and modification
     pub sequence: Option<u32>,                // Sequence number (SEQUENCE)
-    pub created: Option<DateTime<Utc>>,       // Creation time (CREATED)
-    pub last_modified: Option<DateTime<Utc>>, // Last modified (LAST-MODIFIED)
+    pub created: Option<NaiveDateTime>,       // Creation time (CREATED) (local time)
+    pub created_tzid: Option<String>,         // Timezone ID for CREATED
+    pub last_modified: Option<NaiveDateTime>, // Last modified (LAST-MODIFIED) (local time)  
+    pub last_modified_tzid: Option<String>,   // Timezone ID for LAST-MODIFIED
 
     // Recurrence
     pub rrule: Option<String>,                    // Recurrence rule (RRULE)
-    pub rdate: Vec<DateTime<Utc>>,            // Recurrence dates (RDATE)
-    pub exdate: Vec<DateTime<Utc>>,           // Exception dates (EXDATE)
-    pub recurrence_id: Option<DateTime<Utc>>, // Recurrence ID (RECURRENCE-ID)
+    pub rdate: Vec<NaiveDateTime>,                // Recurrence dates (RDATE) (local time)
+    pub rdate_tzid: Option<String>,               // Timezone ID for RDATE
+    pub exdate: Vec<NaiveDateTime>,               // Exception dates (EXDATE) (local time)
+    pub exdate_tzid: Option<String>,              // Timezone ID for EXDATE
+    pub recurrence_id: Option<NaiveDateTime>,     // Recurrence ID (RECURRENCE-ID) (local time)
+    pub recurrence_id_tzid: Option<String>,       // Timezone ID for RECURRENCE-ID
 
     // Alarms and attachments
     pub alarms: Vec<VAlarm>,          // VALARM components
@@ -64,13 +71,15 @@ pub struct VEvent {
 }
 
 impl VEvent {
-    /// Create a new VEvent with required fields
-    pub fn new(uid: String, dtstart: DateTime<Utc>) -> Self {
+    /// Create a new VEvent with required fields (local time)
+    pub fn new(uid: String, dtstart: NaiveDateTime) -> Self {
         Self {
             dtstamp: Utc::now(),
             uid,
             dtstart,
+            dtstart_tzid: None,
             dtend: None,
+            dtend_tzid: None,
             duration: None,
             summary: None,
             description: None,
@@ -89,12 +98,17 @@ impl VEvent {
             url: None,
             geo: None,
             sequence: None,
-            created: Some(Utc::now()),
-            last_modified: Some(Utc::now()),
+            created: Some(chrono::Local::now().naive_local()),
+            created_tzid: None,
+            last_modified: Some(chrono::Local::now().naive_local()),
+            last_modified_tzid: None,
             rrule: None,
             rdate: Vec::new(),
+            rdate_tzid: None,
             exdate: Vec::new(),
+            exdate_tzid: None,
             recurrence_id: None,
+            recurrence_id_tzid: None,
             alarms: Vec::new(),
             attachments: Vec::new(),
             etag: None,
@@ -105,7 +119,7 @@ impl VEvent {
     }
 
     /// Helper method to get effective end time (dtend or dtstart + duration)
-    pub fn get_end_time(&self) -> DateTime<Utc> {
+    pub fn get_end_time(&self) -> NaiveDateTime {
         if let Some(dtend) = self.dtend {
             dtend
         } else if let Some(duration) = self.duration {
@@ -136,7 +150,7 @@ impl VEvent {
 
     /// Helper method to get start date for UI compatibility
     pub fn get_date(&self) -> chrono::NaiveDate {
-        self.dtstart.date_naive()
+        self.dtstart.date()
     }
 
     /// Check if event is recurring

deploy_frontend.sh

@@ -1,4 +1,6 @@
 #!/bin/sh
 
+export BACKEND_API_URL="https://runway.rcjohnstone.com/api"
 trunk build --release --config /home/connor/docs/projects/calendar/frontend/Trunk.toml
 sudo rsync -azX --delete --info=progress2 -e 'ssh -T -q' --rsync-path='sudo rsync' /home/connor/docs/projects/calendar/frontend/dist connor@server.rcjohnstone.com:/home/connor/data/runway/
+unset BACKEND_API_URL

frontend/Cargo.toml

@@ -22,14 +22,36 @@ web-sys = { version = "0.3", features = [
     "Document",
     "Window",
     "Location",
+    "Navigator",
+    "DomTokenList",
     "Headers",
     "Request",
     "RequestInit",
     "RequestMode",
     "Response",
     "CssStyleDeclaration",
+    "MediaQueryList",
+    "MediaQueryListEvent",
+    # Notification API for browser notifications
+    "Notification",
+    "NotificationOptions",
+    "NotificationPermission",
+    # Service Worker API for background processing
+    "ServiceWorkerContainer",
+    "ServiceWorkerRegistration",
+    "MessageEvent",
+    # IndexedDB API for persistent alarm storage
+    "IdbDatabase",
+    "IdbObjectStore",
+    "IdbTransaction",
+    "IdbRequest",
+    "IdbKeyRange",
+    "IdbFactory",
+    "IdbOpenDbRequest",
+    "IdbVersionChangeEvent",
 ] }
 wasm-bindgen = "0.2"
+js-sys = "0.3"
 
 # HTTP client for CalDAV requests
 reqwest = { version = "0.11", features = ["json"] }
@@ -37,6 +59,7 @@ reqwest = { version = "0.11", features = ["json"] }
 ical = "0.7"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
+serde-wasm-bindgen = "0.6"
 
 # Date and time handling
 chrono = { version = "0.4", features = ["serde", "wasm-bindgen"] }
@@ -67,3 +90,6 @@ gloo-storage = "0.3"
 gloo-timers = "0.3"
 wasm-bindgen-futures = "0.4"
 
+# IndexedDB for persistent alarm storage
+indexed_db_futures = "0.4"
+

frontend/Trunk.toml

@@ -6,7 +6,7 @@ dist = "dist"
 BACKEND_API_URL = "http://localhost:3000/api"
 
 [watch]
-watch = ["src", "Cargo.toml", "../calendar-models/src", "styles.css", "index.html"]
+watch = ["src", "Cargo.toml", "../calendar-models/src", "styles.css", "print-preview.css", "index.html"]
 ignore = ["../backend/", "../target/"]
 
 [serve]

frontend/index.html

@@ -6,15 +6,31 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <base data-trunk-public-url />
     <link data-trunk rel="css" href="styles.css">
+    <link data-trunk rel="css" href="print-preview.css">
     <link data-trunk rel="copy-file" href="styles/google.css">
+    <link data-trunk rel="copy-file" href="styles/apple.css">
+    <link data-trunk rel="copy-file" href="service-worker.js">
     <link data-trunk rel="icon" href="favicon.ico">
+    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" integrity="sha512-DTOQO9RWCH3ppGqcWaEA1BIZOC6xxalwEsw9c2QQeAIftl+Vegovlnee1c9QX4TctnWMn13TZye+giMm8e2LwA==" crossorigin="anonymous" referrerpolicy="no-referrer" />
 </head>
 <body>
     <script>
-        console.log("HTML fully loaded, waiting for WASM...");
         window.addEventListener('TrunkApplicationStarted', () => {
-            console.log("Trunk application started successfully!");
+            // Application loaded successfully
         });
+
+        // Register service worker for alarm background processing
+        if ('serviceWorker' in navigator) {
+            window.addEventListener('load', () => {
+                navigator.serviceWorker.register('/service-worker.js')
+                    .then((registration) => {
+                        // Service worker registered successfully
+                    })
+                    .catch((registrationError) => {
+                        console.log('SW registration failed: ', registrationError);
+                    });
+            });
+        }
     </script>
 </body>
 </html>

frontend/service-worker.js

@@ -0,0 +1,150 @@
+// Calendar Alarms Service Worker
+// Handles background alarm checking when the main app is not active
+
+const SW_VERSION = 'v1.0.0';
+const CACHE_NAME = `calendar-alarms-${SW_VERSION}`;
+const STORAGE_KEY = 'calendar_alarms';
+
+// Install event
+self.addEventListener('install', event => {
+    self.skipWaiting(); // Activate immediately
+});
+
+// Activate event
+self.addEventListener('activate', event => {
+    event.waitUntil(self.clients.claim()); // Take control immediately
+});
+
+// Message handler for communication with main app
+self.addEventListener('message', event => {
+    const { type, data } = event.data;
+    
+    switch (type) {
+        case 'CHECK_ALARMS':
+            handleCheckAlarms(event, data);
+            break;
+        case 'SCHEDULE_ALARM':
+            handleScheduleAlarm(data, event);
+            break;
+        case 'REMOVE_ALARM':
+            handleRemoveAlarm(data, event);
+            break;
+        case 'PING':
+            event.ports[0].postMessage({ type: 'PONG', version: SW_VERSION });
+            break;
+        default:
+            console.warn('Unknown message type:', type);
+    }
+});
+
+// Handle alarm checking request
+function handleCheckAlarms(event, data) {
+    try {
+        // Main app sends alarms data to check
+        const allAlarms = data?.alarms || [];
+        const dueAlarms = checkProvidedAlarms(allAlarms);
+        
+        // Send results back to main app
+        event.ports[0].postMessage({
+            type: 'ALARMS_DUE',
+            data: dueAlarms
+        });
+        
+    } catch (error) {
+        console.error('Error checking alarms:', error);
+        event.ports[0].postMessage({
+            type: 'ALARM_CHECK_ERROR',
+            error: error.message
+        });
+    }
+}
+
+// Process alarms sent from main app
+function checkProvidedAlarms(alarms) {
+    const now = new Date();
+    const nowStr = formatDateTimeForComparison(now);
+    
+    // Filter alarms that should trigger and are pending
+    const dueAlarms = alarms.filter(alarm => {
+        return alarm.status === 'Pending' && alarm.trigger_time <= nowStr;
+    });
+    
+    return dueAlarms;
+}
+
+// Handle schedule alarm request (not needed with localStorage approach)
+function handleScheduleAlarm(alarmData, event) {
+    // Service worker doesn't handle storage with localStorage approach
+    // Main app handles all storage operations
+    event.ports[0].postMessage({
+        type: 'ALARM_SCHEDULED',
+        data: { success: true, alarmId: alarmData.id }
+    });
+}
+
+// Handle remove alarm request (not needed with localStorage approach)
+function handleRemoveAlarm(alarmData, event) {
+    // Service worker doesn't handle storage with localStorage approach
+    // Main app handles all storage operations
+    event.ports[0].postMessage({
+        type: 'ALARM_REMOVED',
+        data: { success: true, eventUid: alarmData.eventUid }
+    });
+}
+
+
+// Format date time for comparison (YYYY-MM-DDTHH:MM:SS)
+function formatDateTimeForComparison(date) {
+    return date.getFullYear() + '-' +
+           String(date.getMonth() + 1).padStart(2, '0') + '-' +
+           String(date.getDate()).padStart(2, '0') + 'T' +
+           String(date.getHours()).padStart(2, '0') + ':' +
+           String(date.getMinutes()).padStart(2, '0') + ':' +
+           String(date.getSeconds()).padStart(2, '0');
+}
+
+// Background alarm checking (runs periodically)
+// Note: Service worker can't access localStorage, so this just pings the main app
+setInterval(async () => {
+    try {
+        // Notify all clients to check their alarms
+        const clients = await self.clients.matchAll();
+        
+        clients.forEach(client => {
+            client.postMessage({
+                type: 'BACKGROUND_ALARM_CHECK_REQUEST'
+            });
+        });
+        
+    } catch (error) {
+        console.error('Background alarm check failed:', error);
+    }
+}, 60000); // Check every minute
+
+// Handle push notifications (for future enhancement)
+self.addEventListener('push', event => {
+    console.log('Push notification received:', event);
+    // Future: Handle server-sent alarm notifications
+});
+
+// Handle notification clicks
+self.addEventListener('notificationclick', event => {
+    console.log('Notification clicked:', event);
+    
+    event.notification.close();
+    
+    // Focus or open the calendar app
+    event.waitUntil(
+        self.clients.matchAll().then(clients => {
+            // Try to focus existing client
+            for (const client of clients) {
+                if (client.url.includes('localhost') || client.url.includes(self.location.origin)) {
+                    return client.focus();
+                }
+            }
+            
+            // Open new window if no client exists
+            return self.clients.openWindow('/');
+        })
+    );
+});

frontend/src/auth.rs

@@ -53,6 +53,50 @@ impl AuthService {
         self.post_json("/auth/login", &request).await
     }
 
+    pub async fn verify_token(&self, token: &str) -> Result<bool, String> {
+        let window = web_sys::window().ok_or("No global window exists")?;
+
+        let opts = RequestInit::new();
+        opts.set_method("GET");
+        opts.set_mode(RequestMode::Cors);
+
+        let url = format!("{}/auth/verify", self.base_url);
+        let request = Request::new_with_str_and_init(&url, &opts)
+            .map_err(|e| format!("Request creation failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Authorization", &format!("Bearer {}", token))
+            .map_err(|e| format!("Header setting failed: {:?}", e))?;
+
+        let resp_value = JsFuture::from(window.fetch_with_request(&request))
+            .await
+            .map_err(|e| format!("Network request failed: {:?}", e))?;
+
+        let resp: Response = resp_value
+            .dyn_into()
+            .map_err(|e| format!("Response cast failed: {:?}", e))?;
+
+        if resp.ok() {
+            let text = JsFuture::from(
+                resp.text()
+                    .map_err(|e| format!("Text extraction failed: {:?}", e))?,
+            )
+            .await
+            .map_err(|e| format!("Text promise failed: {:?}", e))?;
+
+            let text_string = text.as_string().ok_or("Response text is not a string")?;
+            
+            // Parse the response to get the "valid" field
+            let response: serde_json::Value = serde_json::from_str(&text_string)
+                .map_err(|e| format!("JSON parsing failed: {}", e))?;
+            
+            Ok(response.get("valid").and_then(|v| v.as_bool()).unwrap_or(false))
+        } else {
+            Ok(false) // Invalid token
+        }
+    }
+
     // Helper method for POST requests with JSON body
     async fn post_json<T: Serialize, R: for<'de> Deserialize<'de>>(
         &self,

frontend/src/components/calendar.rs

@@ -1,9 +1,9 @@
 use crate::components::{
-    CalendarHeader, CreateEventModal, EventCreationData, EventModal, MonthView, ViewMode, WeekView,
+    CalendarHeader, CreateEventModal, EventCreationData, EventModal, MonthView, PrintPreviewModal, ViewMode, WeekView,
 };
 use crate::models::ical::VEvent;
-use crate::services::{calendar_service::UserInfo, CalendarService};
-use chrono::{Datelike, Duration, Local, NaiveDate};
+use crate::services::{calendar_service::{UserInfo, ExternalCalendar}, CalendarService};
+use chrono::{Datelike, Duration, Local, NaiveDate, Weekday};
 use gloo_storage::{LocalStorage, Storage};
 use std::collections::HashMap;
 use web_sys::MouseEvent;
@@ -14,6 +14,10 @@ pub struct CalendarProps {
     #[prop_or_default]
     pub user_info: Option<UserInfo>,
     #[prop_or_default]
+    pub external_calendar_events: Vec<VEvent>,
+    #[prop_or_default]
+    pub external_calendars: Vec<ExternalCalendar>,
+    #[prop_or_default]
     pub on_event_context_menu: Option<Callback<(web_sys::MouseEvent, VEvent)>>,
     #[prop_or_default]
     pub on_calendar_context_menu: Option<Callback<(web_sys::MouseEvent, NaiveDate)>>,
@@ -28,7 +32,7 @@ pub struct CalendarProps {
             chrono::NaiveDateTime,
             chrono::NaiveDateTime,
             bool,
-            Option<chrono::DateTime<chrono::Utc>>,
+            Option<chrono::NaiveDateTime>,
             Option<String>,
             Option<String>,
         )>,
@@ -101,10 +105,15 @@ pub fn Calendar(props: &CalendarProps) -> Html {
         let loading = loading.clone();
         let error = error.clone();
         let current_date = current_date.clone();
+        let external_events = props.external_calendar_events.clone(); // Clone before the effect
+        let view = props.view.clone(); // Clone before the effect
         
-        use_effect_with((*current_date, props.view.clone()), move |(date, _view)| {
+        use_effect_with((*current_date, view.clone(), external_events.len(), props.user_info.clone()), move |(date, _view, _external_len, user_info)| {
             let auth_token: Option<String> = LocalStorage::get("auth_token").ok();
             let date = *date; // Clone the date to avoid lifetime issues
+            let view_mode = _view.clone(); // Clone the view mode to avoid lifetime issues
+            let external_events = external_events.clone(); // Clone external events to avoid lifetime issues
+            let user_info = user_info.clone(); // Clone user_info to avoid lifetime issues
             
             if let Some(token) = auth_token {
                 let events = events.clone();
@@ -128,20 +137,101 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                         String::new()
                     };
 
-                    let current_year = date.year();
-                    let current_month = date.month();
+                    // Determine which months to fetch based on view mode
+                    let months_to_fetch = match view_mode {
+                        ViewMode::Month => {
+                            // For month view, just fetch the current month
+                            vec![(date.year(), date.month())]
+                        }
+                        ViewMode::Week => {
+                            // For week view, calculate the week bounds and fetch all months that intersect
+                            let start_of_week = get_start_of_week(date);
+                            let end_of_week = start_of_week + Duration::days(6);
                             
+                            let mut months = vec![(start_of_week.year(), start_of_week.month())];
+                            
+                            // If the week spans into a different month, add that month too
+                            if end_of_week.month() != start_of_week.month() || end_of_week.year() != start_of_week.year() {
+                                months.push((end_of_week.year(), end_of_week.month()));
+                            }
+                            
+                            months
+                        }
+                    };
+
+                    // Fetch events for all required months
+                    let mut all_events = Vec::new();
+                    for (year, month) in months_to_fetch {
                         match calendar_service
                             .fetch_events_for_month_vevent(
                                 &token,
                                 &password,
-                            current_year,
-                            current_month,
+                                year,
+                                month,
                             )
                             .await
+                        {
+                            Ok(mut month_events) => {
+                                all_events.append(&mut month_events);
+                            }
+                            Err(err) => {
+                                error.set(Some(format!("Failed to load events for {}-{}: {}", year, month, err)));
+                                loading.set(false);
+                                return;
+                            }
+                        }
+                    }
+                    
+                    // Deduplicate events that may appear in multiple month fetches
+                    // This happens when a recurring event spans across month boundaries
+                    all_events.sort_by(|a, b| {
+                        // Sort by UID first, then by start time
+                        match a.uid.cmp(&b.uid) {
+                            std::cmp::Ordering::Equal => a.dtstart.cmp(&b.dtstart),
+                            other => other,
+                        }
+                    });
+                    all_events.dedup_by(|a, b| {
+                        // Remove duplicates with same UID and start time
+                        a.uid == b.uid && a.dtstart == b.dtstart
+                    });
+
+                    // Process the combined events
+                    match Ok(all_events) as Result<Vec<VEvent>, String>
                     {
                         Ok(vevents) => {
-                            let grouped_events = CalendarService::group_events_by_date(vevents);
+                            // Filter CalDAV events based on calendar visibility
+                            let mut filtered_events = if let Some(user_info) = user_info.as_ref() {
+                                vevents.into_iter()
+                                    .filter(|event| {
+                                        if let Some(calendar_path) = event.calendar_path.as_ref() {
+                                            // Find the calendar info for this event
+                                            user_info.calendars.iter()
+                                                .find(|cal| &cal.path == calendar_path)
+                                                .map(|cal| cal.is_visible)
+                                                .unwrap_or(true) // Default to visible if not found
+                                        } else {
+                                            true // Show events without calendar path
+                                        }
+                                    })
+                                    .collect()
+                            } else {
+                                vevents // Show all events if no user info
+                            };
+                            
+                            // Mark external events as external by adding a special category
+                            let marked_external_events: Vec<VEvent> = external_events
+                                .into_iter()
+                                .map(|mut event| {
+                                    // Add a special category to identify external events
+                                    event.categories.push("__EXTERNAL_CALENDAR__".to_string());
+                                    event
+                                })
+                                .collect();
+                            
+                            filtered_events.extend(marked_external_events);
+                            
+                            let grouped_events = CalendarService::group_events_by_date(filtered_events);
                             events.set(grouped_events);
                             loading.set(false);
                         }
@@ -350,6 +440,15 @@ pub fn Calendar(props: &CalendarProps) -> Html {
         })
     };
 
+    // Handle print calendar preview
+    let show_print_preview = use_state(|| false);
+    let on_print = {
+        let show_print_preview = show_print_preview.clone();
+        Callback::from(move |_: MouseEvent| {
+            show_print_preview.set(true);
+        })
+    };
+
     // Handle drag-to-create event
     let on_create_event = {
         let show_create_modal = show_create_modal.clone();
@@ -389,7 +488,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                 chrono::NaiveDateTime,
                 chrono::NaiveDateTime,
                 bool,
-                Option<chrono::DateTime<chrono::Utc>>,
+                Option<chrono::NaiveDateTime>,
                 Option<String>,
                 Option<String>,
             )| {
@@ -418,6 +517,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                 on_today={on_today}
                 time_increment={Some(*time_increment)}
                 on_time_increment_toggle={Some(on_time_increment_toggle)}
+                on_print={Some(on_print)}
             />
 
             {
@@ -452,6 +552,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                                 on_event_click={on_event_click.clone()}
                                 refreshing_event_uid={(*refreshing_event_uid).clone()}
                                 user_info={props.user_info.clone()}
+                                external_calendars={props.external_calendars.clone()}
                                 on_event_context_menu={props.on_event_context_menu.clone()}
                                 on_calendar_context_menu={props.on_calendar_context_menu.clone()}
                                 selected_date={Some(*selected_date)}
@@ -467,6 +568,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                             on_event_click={on_event_click.clone()}
                             refreshing_event_uid={(*refreshing_event_uid).clone()}
                             user_info={props.user_info.clone()}
+                            external_calendars={props.external_calendars.clone()}
                             on_event_context_menu={props.on_event_context_menu.clone()}
                             on_calendar_context_menu={props.on_calendar_context_menu.clone()}
                             on_create_event={Some(on_create_event)}
@@ -522,6 +624,47 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                     })
                 }}
             />
+
+            // Print preview modal
+            {
+                if *show_print_preview {
+                    html! {
+                        <PrintPreviewModal
+                            on_close={{
+                                let show_print_preview = show_print_preview.clone();
+                                Callback::from(move |_| {
+                                    show_print_preview.set(false);
+                                })
+                            }}
+                            view_mode={props.view.clone()}
+                            current_date={*current_date}
+                            selected_date={*selected_date}
+                            events={(*events).clone()}
+                            user_info={props.user_info.clone()}
+                            external_calendars={props.external_calendars.clone()}
+                            time_increment={*time_increment}
+                            today={today}
+                        />
+                    }
+                } else {
+                    html! {}
+                }
+            }
         </div>
     }
 }
+
+// Helper function to calculate the start of the week (Sunday) for a given date
+fn get_start_of_week(date: NaiveDate) -> NaiveDate {
+    let weekday = date.weekday();
+    let days_from_sunday = match weekday {
+        Weekday::Sun => 0,
+        Weekday::Mon => 1,
+        Weekday::Tue => 2,
+        Weekday::Wed => 3,
+        Weekday::Thu => 4,
+        Weekday::Fri => 5,
+        Weekday::Sat => 6,
+    };
+    date - Duration::days(days_from_sunday)
+}

frontend/src/components/calendar_header.rs

@@ -14,6 +14,8 @@ pub struct CalendarHeaderProps {
     pub time_increment: Option<u32>,
     #[prop_or_default]
     pub on_time_increment_toggle: Option<Callback<MouseEvent>>,
+    #[prop_or_default]
+    pub on_print: Option<Callback<MouseEvent>>,
 }
 
 #[function_component(CalendarHeader)]
@@ -39,6 +41,17 @@ pub fn calendar_header(props: &CalendarHeaderProps) -> Html {
                         html! {}
                     }
                 }
+                {
+                    if let Some(print_callback) = &props.on_print {
+                        html! {
+                            <button class="print-button" onclick={print_callback.clone()} title="Print Calendar">
+                                <i class="fas fa-print"></i>
+                            </button>
+                        }
+                    } else {
+                        html! {}
+                    }
+                }
             </div>
             <h2 class="month-year">{title}</h2>
             <div class="header-right">

frontend/src/components/calendar_list_item.rs

@@ -9,7 +9,9 @@ pub struct CalendarListItemProps {
     pub on_color_change: Callback<(String, String)>, // (calendar_path, color)
     pub on_color_picker_toggle: Callback<String>,    // calendar_path
     pub available_colors: Vec<String>,
+    pub on_color_editor_open: Callback<(usize, String)>, // (index, current_color)
     pub on_context_menu: Callback<(MouseEvent, String)>, // (event, calendar_path)
+    pub on_visibility_toggle: Callback<String>,      // calendar_path
 }
 
 #[function_component(CalendarListItem)]
@@ -32,15 +34,29 @@ pub fn calendar_list_item(props: &CalendarListItemProps) -> Html {
         })
     };
 
+    let on_visibility_toggle = {
+        let cal_path = props.calendar.path.clone();
+        let on_visibility_toggle = props.on_visibility_toggle.clone();
+        Callback::from(move |_| {
+            on_visibility_toggle.emit(cal_path.clone());
+        })
+    };
+
     html! {
         <li key={props.calendar.path.clone()} oncontextmenu={on_context_menu}>
+            <div class="calendar-info">
+                <input
+                    type="checkbox"
+                    checked={props.calendar.is_visible}
+                    onchange={on_visibility_toggle}
+                />
                 <span class="calendar-color"
                       style={format!("background-color: {}", props.calendar.color)}
                       onclick={on_color_click}>
                     {
                         if props.color_picker_open {
                             html! {
-                            <div class="color-picker">
+                                <div class="color-picker-dropdown">
                                     {
                                         props.available_colors.iter().map(|color| {
                                             let color_str = color.clone();
@@ -51,13 +67,25 @@ pub fn calendar_list_item(props: &CalendarListItemProps) -> Html {
                                                 on_color_change.emit((cal_path.clone(), color_str.clone()));
                                             });
 
+                                            let on_color_right_click = {
+                                                let on_color_editor_open = props.on_color_editor_open.clone();
+                                                let color_index = props.available_colors.iter().position(|c| c == color).unwrap_or(0);
+                                                let color_str = color.clone();
+                                                Callback::from(move |e: MouseEvent| {
+                                                    e.prevent_default();
+                                                    e.stop_propagation();
+                                                    on_color_editor_open.emit((color_index, color_str.clone()));
+                                                })
+                                            };
+
                                             let is_selected = props.calendar.color == *color;
                                             let class_name = if is_selected { "color-option selected" } else { "color-option" };
 
                                             html! {
                                                 <div class={class_name}
                                                      style={format!("background-color: {}", color)}
-                                                 onclick={on_color_select}>
+                                                     onclick={on_color_select}
+                                                     oncontextmenu={on_color_right_click}>
                                                 </div>
                                             }
                                         }).collect::<Html>()
@@ -70,6 +98,7 @@ pub fn calendar_list_item(props: &CalendarListItemProps) -> Html {
                     }
                 </span>
                 <span class="calendar-name">{&props.calendar.display_name}</span>
+            </div>
         </li>
     }
 }

frontend/src/components/calendar_management_modal.rs

@@ -0,0 +1,449 @@
+use yew::prelude::*;
+use web_sys::HtmlInputElement;
+use wasm_bindgen::JsCast;
+use crate::services::calendar_service::CalendarService;
+
+#[derive(Clone, PartialEq)]
+pub enum CalendarTab {
+    Create,
+    External,
+}
+
+#[derive(Properties, PartialEq)]
+pub struct CalendarManagementModalProps {
+    pub is_open: bool,
+    pub on_close: Callback<()>,
+    pub on_create_calendar: Callback<(String, Option<String>, Option<String>)>, // name, description, color
+    pub on_external_success: Callback<i32>, // Pass the newly created external calendar ID
+    pub available_colors: Vec<String>,
+}
+
+#[function_component(CalendarManagementModal)]
+pub fn calendar_management_modal(props: &CalendarManagementModalProps) -> Html {
+    let active_tab = use_state(|| CalendarTab::Create);
+    
+    // Create Calendar state
+    let calendar_name = use_state(|| String::new());
+    let description = use_state(|| String::new());
+    let selected_color = use_state(|| None::<String>);
+    let create_error_message = use_state(|| None::<String>);
+    let is_creating = use_state(|| false);
+    
+    // External Calendar state
+    let external_name = use_state(|| String::new());
+    let external_url = use_state(|| String::new());
+    let external_selected_color = use_state(|| Some("#4285f4".to_string()));
+    let external_is_loading = use_state(|| false);
+    let external_error_message = use_state(|| None::<String>);
+
+    // Reset state when modal opens
+    use_effect_with(props.is_open, {
+        let calendar_name = calendar_name.clone();
+        let description = description.clone();
+        let selected_color = selected_color.clone();
+        let create_error_message = create_error_message.clone();
+        let is_creating = is_creating.clone();
+        let external_name = external_name.clone();
+        let external_url = external_url.clone();
+        let external_is_loading = external_is_loading.clone();
+        let external_error_message = external_error_message.clone();
+        let external_selected_color = external_selected_color.clone();
+        let active_tab = active_tab.clone();
+        
+        move |is_open| {
+            if *is_open {
+                // Reset all state when modal opens
+                calendar_name.set(String::new());
+                description.set(String::new());
+                selected_color.set(None);
+                create_error_message.set(None);
+                is_creating.set(false);
+                external_name.set(String::new());
+                external_url.set(String::new());
+                external_is_loading.set(false);
+                external_error_message.set(None);
+                external_selected_color.set(Some("#4285f4".to_string()));
+                active_tab.set(CalendarTab::Create);
+            }
+        }
+    });
+
+    let on_tab_click = {
+        let active_tab = active_tab.clone();
+        Callback::from(move |tab: CalendarTab| {
+            active_tab.set(tab);
+        })
+    };
+
+    let on_backdrop_click = {
+        let on_close = props.on_close.clone();
+        Callback::from(move |e: MouseEvent| {
+            if let Some(target) = e.target() {
+                let element = target.dyn_into::<web_sys::Element>().unwrap();
+                if element.class_list().contains("modal-backdrop") {
+                    on_close.emit(());
+                }
+            }
+        })
+    };
+
+    // Create Calendar handlers
+    let on_name_change = {
+        let calendar_name = calendar_name.clone();
+        Callback::from(move |e: InputEvent| {
+            let input: HtmlInputElement = e.target_unchecked_into();
+            calendar_name.set(input.value());
+        })
+    };
+
+    let on_description_change = {
+        let description = description.clone();
+        Callback::from(move |e: InputEvent| {
+            let input: web_sys::HtmlTextAreaElement = e.target_unchecked_into();
+            description.set(input.value());
+        })
+    };
+
+    let on_color_select = {
+        let selected_color = selected_color.clone();
+        Callback::from(move |color: String| {
+            selected_color.set(Some(color));
+        })
+    };
+
+    let on_external_color_select = {
+        let external_selected_color = external_selected_color.clone();
+        Callback::from(move |color: String| {
+            external_selected_color.set(Some(color));
+        })
+    };
+
+    let on_create_submit = {
+        let calendar_name = calendar_name.clone();
+        let description = description.clone();
+        let selected_color = selected_color.clone();
+        let create_error_message = create_error_message.clone();
+        let is_creating = is_creating.clone();
+        let on_create_calendar = props.on_create_calendar.clone();
+
+        Callback::from(move |e: SubmitEvent| {
+            e.prevent_default();
+
+            let name = (*calendar_name).trim();
+            if name.is_empty() {
+                create_error_message.set(Some("Calendar name is required".to_string()));
+                return;
+            }
+
+            is_creating.set(true);
+            create_error_message.set(None);
+
+            let desc = if description.is_empty() {
+                None
+            } else {
+                Some((*description).clone())
+            };
+
+            on_create_calendar.emit((name.to_string(), desc, (*selected_color).clone()));
+        })
+    };
+
+    // External Calendar handlers
+    let on_external_submit = {
+        let external_name = external_name.clone();
+        let external_url = external_url.clone();
+        let external_selected_color = external_selected_color.clone();
+        let external_is_loading = external_is_loading.clone();
+        let external_error_message = external_error_message.clone();
+        let on_close = props.on_close.clone();
+        let on_external_success = props.on_external_success.clone();
+
+        Callback::from(move |e: SubmitEvent| {
+            e.prevent_default();
+            
+            let name = (*external_name).trim().to_string();
+            let url = (*external_url).trim().to_string();
+            let color = (*external_selected_color).clone().unwrap_or_else(|| "#4285f4".to_string());
+
+            // Debug logging to understand the issue
+            web_sys::console::log_1(&format!("External calendar form submission - Name: '{}', URL: '{}'", name, url).into());
+
+            if name.is_empty() {
+                external_error_message.set(Some("Calendar name is required".to_string()));
+                web_sys::console::log_1(&"Validation failed: empty name".into());
+                return;
+            }
+
+            if url.is_empty() {
+                external_error_message.set(Some("Calendar URL is required".to_string()));
+                web_sys::console::log_1(&"Validation failed: empty URL".into());
+                return;
+            }
+
+            // Basic URL validation
+            if !url.starts_with("http://") && !url.starts_with("https://") {
+                external_error_message.set(Some("Please enter a valid HTTP or HTTPS URL".to_string()));
+                return;
+            }
+
+            external_is_loading.set(true);
+            external_error_message.set(None);
+
+            let external_is_loading = external_is_loading.clone();
+            let external_error_message = external_error_message.clone();
+            let on_close = on_close.clone();
+            let on_external_success = on_external_success.clone();
+
+            wasm_bindgen_futures::spawn_local(async move {
+                let _calendar_service = CalendarService::new();
+                
+                match CalendarService::create_external_calendar(&name, &url, &color).await {
+                    Ok(calendar) => {
+                        external_is_loading.set(false);
+                        on_close.emit(());
+                        on_external_success.emit(calendar.id);
+                    }
+                    Err(e) => {
+                        external_is_loading.set(false);
+                        external_error_message.set(Some(format!("Failed to add calendar: {}", e)));
+                    }
+                }
+            });
+        })
+    };
+
+    // External input change handlers
+    let on_external_name_change = {
+        let external_name = external_name.clone();
+        Callback::from(move |e: Event| {
+            if let Some(input) = e.target_dyn_into::<HtmlInputElement>() {
+                external_name.set(input.value());
+            }
+        })
+    };
+
+    let on_external_url_change = {
+        let external_url = external_url.clone();
+        Callback::from(move |e: Event| {
+            if let Some(input) = e.target_dyn_into::<HtmlInputElement>() {
+                external_url.set(input.value());
+            }
+        })
+    };
+
+    if !props.is_open {
+        return html! {};
+    }
+
+    html! {
+        <div class="modal-backdrop" onclick={on_backdrop_click}>
+            <div class="modal-content calendar-management-modal">
+                <div class="modal-header">
+                    <h2>{"Add Calendar"}</h2>
+                    <button class="modal-close" onclick={
+                        let on_close = props.on_close.clone();
+                        Callback::from(move |_: MouseEvent| on_close.emit(()))
+                    }>{"×"}</button>
+                </div>
+                
+                <div class="calendar-management-tabs">
+                    <button 
+                        class={if *active_tab == CalendarTab::Create { "tab-button active" } else { "tab-button" }}
+                        onclick={
+                            let on_tab_click = on_tab_click.clone();
+                            Callback::from(move |_: MouseEvent| on_tab_click.emit(CalendarTab::Create))
+                        }
+                    >
+                        {"Create Calendar"}
+                    </button>
+                    <button 
+                        class={if *active_tab == CalendarTab::External { "tab-button active" } else { "tab-button" }}
+                        onclick={
+                            let on_tab_click = on_tab_click.clone();
+                            Callback::from(move |_: MouseEvent| on_tab_click.emit(CalendarTab::External))
+                        }
+                    >
+                        {"Add External"}
+                    </button>
+                </div>
+
+                <div class="modal-body">
+                    {
+                        match *active_tab {
+                            CalendarTab::Create => html! {
+                                <form onsubmit={on_create_submit}>
+                                    <div class="form-group">
+                                        <label for="calendar-name">{"Calendar Name"}</label>
+                                        <input
+                                            type="text"
+                                            id="calendar-name"
+                                            value={(*calendar_name).clone()}
+                                            oninput={on_name_change}
+                                            placeholder="Enter calendar name"
+                                            disabled={*is_creating}
+                                        />
+                                    </div>
+
+                                    <div class="form-group">
+                                        <label for="calendar-description">{"Description (optional)"}</label>
+                                        <textarea
+                                            id="calendar-description"
+                                            value={(*description).clone()}
+                                            oninput={on_description_change}
+                                            placeholder="Enter calendar description"
+                                            disabled={*is_creating}
+                                        />
+                                    </div>
+
+                                    <div class="form-group">
+                                        <label>{"Calendar Color"}</label>
+                                        <div class="color-picker">
+                                            {
+                                                props.available_colors.iter().map(|color| {
+                                                    let is_selected = selected_color.as_ref() == Some(color);
+                                                    let color_clone = color.clone();
+                                                    let on_color_select = on_color_select.clone();
+                                                    
+                                                    html! {
+                                                        <div
+                                                            key={color.clone()}
+                                                            class={if is_selected { "color-option selected" } else { "color-option" }}
+                                                            style={format!("background-color: {}", color)}
+                                                            onclick={Callback::from(move |_: MouseEvent| {
+                                                                on_color_select.emit(color_clone.clone());
+                                                            })}
+                                                        />
+                                                    }
+                                                }).collect::<Html>()
+                                            }
+                                        </div>
+                                    </div>
+
+                                    {
+                                        if let Some(ref error) = *create_error_message {
+                                            html! {
+                                                <div class="error-message">
+                                                    {error}
+                                                </div>
+                                            }
+                                        } else {
+                                            html! {}
+                                        }
+                                    }
+
+                                    <div class="modal-footer">
+                                        <button 
+                                            type="button" 
+                                            class="cancel-button" 
+                                            onclick={
+                                                let on_close = props.on_close.clone();
+                                                Callback::from(move |_: MouseEvent| on_close.emit(()))
+                                            }
+                                            disabled={*is_creating}
+                                        >
+                                            {"Cancel"}
+                                        </button>
+                                        <button 
+                                            type="submit" 
+                                            class="create-button" 
+                                            disabled={*is_creating}
+                                        >
+                                            {if *is_creating { "Creating..." } else { "Create Calendar" }}
+                                        </button>
+                                    </div>
+                                </form>
+                            },
+                            CalendarTab::External => html! {
+                                <form onsubmit={on_external_submit}>
+                                    <div class="form-group">
+                                        <label for="external-name">{"Calendar Name"}</label>
+                                        <input
+                                            type="text"
+                                            id="external-name"
+                                            value={(*external_name).clone()}
+                                            onchange={on_external_name_change}
+                                            placeholder="Enter calendar name"
+                                            disabled={*external_is_loading}
+                                        />
+                                    </div>
+
+                                    <div class="form-group">
+                                        <label for="external-url">{"Calendar URL"}</label>
+                                        <input
+                                            type="url"
+                                            id="external-url"
+                                            value={(*external_url).clone()}
+                                            onchange={on_external_url_change}
+                                            placeholder="https://example.com/calendar.ics"
+                                            disabled={*external_is_loading}
+                                        />
+                                        <small class="help-text">
+                                            {"Enter the ICS/CalDAV URL for your external calendar"}
+                                        </small>
+                                    </div>
+
+                                    <div class="form-group">
+                                        <label>{"Calendar Color"}</label>
+                                        <div class="color-picker">
+                                            {
+                                                props.available_colors.iter().map(|color| {
+                                                    let is_selected = external_selected_color.as_ref() == Some(color);
+                                                    let color_clone = color.clone();
+                                                    let on_external_color_select = on_external_color_select.clone();
+                                                    
+                                                    html! {
+                                                        <div
+                                                            key={color.clone()}
+                                                            class={if is_selected { "color-option selected" } else { "color-option" }}
+                                                            style={format!("background-color: {}", color)}
+                                                            onclick={Callback::from(move |_: MouseEvent| {
+                                                                on_external_color_select.emit(color_clone.clone());
+                                                            })}
+                                                        />
+                                                    }
+                                                }).collect::<Html>()
+                                            }
+                                        </div>
+                                    </div>
+
+                                    {
+                                        if let Some(ref error) = *external_error_message {
+                                            html! {
+                                                <div class="error-message">
+                                                    {error}
+                                                </div>
+                                            }
+                                        } else {
+                                            html! {}
+                                        }
+                                    }
+
+                                    <div class="modal-footer">
+                                        <button 
+                                            type="button" 
+                                            class="cancel-button" 
+                                            onclick={
+                                                let on_close = props.on_close.clone();
+                                                Callback::from(move |_: MouseEvent| on_close.emit(()))
+                                            }
+                                            disabled={*external_is_loading}
+                                        >
+                                            {"Cancel"}
+                                        </button>
+                                        <button 
+                                            type="submit" 
+                                            class="create-button" 
+                                            disabled={*external_is_loading}
+                                        >
+                                            {if *external_is_loading { "Adding..." } else { "Add Calendar" }}
+                                        </button>
+                                    </div>
+                                </form>
+                            }
+                        }
+                    }
+                </div>
+            </div>
+        </div>
+    }
+}

frontend/src/components/color_editor_modal.rs

@@ -0,0 +1,176 @@
+use yew::prelude::*;
+use web_sys::HtmlInputElement;
+use wasm_bindgen::JsCast;
+
+#[derive(Properties, PartialEq)]
+pub struct ColorEditorModalProps {
+    pub is_open: bool,
+    pub current_color: String,
+    pub color_index: usize,
+    pub default_color: String, // Default color for this index
+    pub on_close: Callback<()>,
+    pub on_save: Callback<(usize, String)>, // (index, new_color)
+    pub on_reset_all: Callback<()>, // Reset all colors to defaults
+}
+
+#[function_component(ColorEditorModal)]
+pub fn color_editor_modal(props: &ColorEditorModalProps) -> Html {
+    let selected_color = use_state(|| props.current_color.clone());
+    
+    // Reset selected color when modal opens with new color
+    {
+        let selected_color = selected_color.clone();
+        use_effect_with(props.current_color.clone(), move |current_color| {
+            selected_color.set(current_color.clone());
+        });
+    }
+
+    let on_color_input = {
+        let selected_color = selected_color.clone();
+        Callback::from(move |e: InputEvent| {
+            if let Some(input) = e.target_dyn_into::<HtmlInputElement>() {
+                selected_color.set(input.value());
+            }
+        })
+    };
+
+    let on_save_click = {
+        let selected_color = selected_color.clone();
+        let on_save = props.on_save.clone();
+        let color_index = props.color_index;
+        Callback::from(move |_| {
+            on_save.emit((color_index, (*selected_color).clone()));
+        })
+    };
+
+    let on_backdrop_click = {
+        let on_close = props.on_close.clone();
+        Callback::from(move |e: MouseEvent| {
+            // Only close if clicking the backdrop, not the modal content
+            if let Some(target) = e.target() {
+                if let Some(element) = target.dyn_ref::<web_sys::Element>() {
+                    if element.class_list().contains("color-editor-backdrop") {
+                        on_close.emit(());
+                    }
+                }
+            }
+        })
+    };
+
+    if !props.is_open {
+        return html! {};
+    }
+
+    // Predefined color suggestions
+    let suggested_colors = vec![
+        "#3B82F6", "#10B981", "#F59E0B", "#EF4444", "#8B5CF6", "#06B6D4",
+        "#84CC16", "#F97316", "#EC4899", "#6366F1", "#14B8A6", "#F3B806",
+        "#8B5A2B", "#6B7280", "#DC2626", "#7C3AED", "#F87171", "#34D399",
+        "#FBBF24", "#A78BFA", "#60A5FA", "#2DD4BF", "#FB7185", "#FDBA74",
+    ];
+
+    html! {
+        <div class="color-editor-backdrop" onclick={on_backdrop_click}>
+            <div class="color-editor-modal">
+                <div class="color-editor-header">
+                    <h3>{"Edit Color"}</h3>
+                    <button class="close-button" onclick={Callback::from({
+                        let on_close = props.on_close.clone();
+                        move |_| on_close.emit(())
+                    })}>
+                        {"×"}
+                    </button>
+                </div>
+                
+                <div class="color-editor-content">
+                    <div class="current-color-preview">
+                        <div 
+                            class="color-preview-large"
+                            style={format!("background-color: {}", *selected_color)}
+                        ></div>
+                        <div class="color-preview-info">
+                            <span class="color-value">{&*selected_color}</span>
+                            <button class="reset-this-color-button" onclick={{
+                                let selected_color = selected_color.clone();
+                                let default_color = props.default_color.clone();
+                                Callback::from(move |_| {
+                                    selected_color.set(default_color.clone());
+                                })
+                            }}>
+                                {"Reset This Color"}
+                            </button>
+                        </div>
+                    </div>
+
+                    <div class="color-input-section">
+                        <label for="color-picker">{"Custom Color:"}</label>
+                        <div class="color-input-group">
+                            <input 
+                                type="color" 
+                                id="color-picker"
+                                value={(*selected_color).clone()}
+                                oninput={on_color_input.clone()}
+                            />
+                            <input 
+                                type="text" 
+                                class="color-text-input"
+                                value={(*selected_color).clone()}
+                                oninput={on_color_input}
+                                placeholder="#000000"
+                            />
+                        </div>
+                    </div>
+
+                    <div class="suggested-colors-section">
+                        <label>{"Suggested Colors:"}</label>
+                        <div class="suggested-colors-grid">
+                            {
+                                suggested_colors.iter().map(|color| {
+                                    let color = color.to_string();
+                                    let selected_color = selected_color.clone();
+                                    let onclick = {
+                                        let color = color.clone();
+                                        Callback::from(move |_| {
+                                            selected_color.set(color.clone());
+                                        })
+                                    };
+                                    
+                                    html! {
+                                        <div 
+                                            class="suggested-color"
+                                            style={format!("background-color: {}", color)}
+                                            onclick={onclick}
+                                            title={color.clone()}
+                                        ></div>
+                                    }
+                                }).collect::<Html>()
+                            }
+                        </div>
+                    </div>
+                </div>
+
+                <div class="color-editor-footer">
+                    <button class="cancel-button" onclick={Callback::from({
+                        let on_close = props.on_close.clone();
+                        move |_| on_close.emit(())
+                    })}>
+                        {"Cancel"}
+                    </button>
+                    <button class="reset-all-button" onclick={Callback::from({
+                        let on_reset_all = props.on_reset_all.clone();
+                        let on_close = props.on_close.clone();
+                        move |_| {
+                            on_reset_all.emit(());
+                            on_close.emit(());
+                        }
+                    })}>
+                        {"Reset All Colors"}
+                    </button>
+                    <button class="save-button" onclick={on_save_click}>
+                        {"Save"}
+                    </button>
+                </div>
+            </div>
+        </div>
+    }
+}

frontend/src/components/create_event_modal.rs

@@ -238,12 +238,11 @@ pub fn create_event_modal(props: &CreateEventModalProps) -> Html {
 
 // Convert VEvent to EventCreationData for editing
 fn vevent_to_creation_data(event: &crate::models::ical::VEvent, available_calendars: &[CalendarInfo]) -> EventCreationData {
-    use chrono::Local;
     
-    // Convert start datetime from UTC to local
-    let start_local = event.dtstart.with_timezone(&Local).naive_local();
+    // VEvent fields are already local time (NaiveDateTime)
+    let start_local = event.dtstart;
     let end_local = if let Some(dtend) = event.dtend {
-        dtend.with_timezone(&Local).naive_local()
+        dtend
     } else {
         // Default to 1 hour after start if no end time
         start_local + chrono::Duration::hours(1)
@@ -258,7 +257,13 @@ fn vevent_to_creation_data(event: &crate::models::ical::VEvent, available_calend
         
         // Timing
         start_date: start_local.date(),
-        end_date: end_local.date(),
+        end_date: if event.all_day {
+            // For all-day events, subtract one day to convert from exclusive to inclusive end date
+            // (UI expects inclusive dates, but iCalendar stores exclusive end dates)
+            end_local.date() - chrono::Duration::days(1)
+        } else {
+            end_local.date()
+        },
         start_time: start_local.time(),
         end_time: end_local.time(),
         
@@ -287,19 +292,37 @@ fn vevent_to_creation_data(event: &crate::models::ical::VEvent, available_calend
         // Categorization  
         categories: event.categories.join(","),
         
-        // Reminders - TODO: Parse alarm from VEvent if needed
-        reminder: ReminderType::None,
+        // Reminders - Use VAlarms from the event
+        alarms: event.alarms.clone(),
         
-        // Recurrence - TODO: Parse RRULE if needed for advanced editing
-        recurrence: if event.rrule.is_some() {
-            RecurrenceType::Daily // Default, could be enhanced to parse actual RRULE
+        // Recurrence - Parse RRULE if present
+        recurrence: if let Some(ref rrule_str) = event.rrule {
+            web_sys::console::log_1(&format!("🐛 MODAL DEBUG: Event has RRULE: {}", rrule_str).into());
+            parse_rrule_frequency(rrule_str)
         } else {
+            web_sys::console::log_1(&"🐛 MODAL DEBUG: Event has no RRULE (singleton)".into());
             RecurrenceType::None
         },
-        recurrence_interval: 1,
-        recurrence_until: None,
-        recurrence_count: None,
-        recurrence_days: vec![false; 7],
+        recurrence_interval: if let Some(ref rrule_str) = event.rrule {
+            parse_rrule_interval(rrule_str)
+        } else {
+            1
+        },
+        recurrence_until: if let Some(ref rrule_str) = event.rrule {
+            parse_rrule_until(rrule_str)
+        } else {
+            None
+        },
+        recurrence_count: if let Some(ref rrule_str) = event.rrule {
+            parse_rrule_count(rrule_str)
+        } else {
+            None
+        },
+        recurrence_days: if let Some(ref rrule_str) = event.rrule {
+            parse_rrule_days(rrule_str)
+        } else {
+            vec![false; 7]
+        },
         
         // Advanced recurrence
         monthly_by_day: None,
@@ -322,9 +345,121 @@ fn vevent_to_creation_data(event: &crate::models::ical::VEvent, available_calend
         },
         
         // Edit tracking
-        edit_scope: None, // Will be set by the modal after creation
+        edit_scope: {
+            web_sys::console::log_1(&"🐛 MODAL DEBUG: Setting edit_scope to None for vevent_to_creation_data".into());
+            None // Will be set by the modal after creation
+        },
         changed_fields: vec![],
         original_uid: Some(event.uid.clone()), // Preserve original UID for editing
         occurrence_date: Some(start_local.date()), // The occurrence date being edited
     }
 }
+
+// Parse RRULE frequency component
+fn parse_rrule_frequency(rrule: &str) -> RecurrenceType {
+    if rrule.contains("FREQ=DAILY") {
+        RecurrenceType::Daily
+    } else if rrule.contains("FREQ=WEEKLY") {
+        RecurrenceType::Weekly
+    } else if rrule.contains("FREQ=MONTHLY") {
+        RecurrenceType::Monthly
+    } else if rrule.contains("FREQ=YEARLY") {
+        RecurrenceType::Yearly
+    } else {
+        RecurrenceType::None
+    }
+}
+
+// Parse RRULE interval component
+fn parse_rrule_interval(rrule: &str) -> u32 {
+    if let Some(start) = rrule.find("INTERVAL=") {
+        let interval_part = &rrule[start + 9..];
+        if let Some(end) = interval_part.find(';') {
+            interval_part[..end].parse().unwrap_or(1)
+        } else {
+            interval_part.parse().unwrap_or(1)
+        }
+    } else {
+        1
+    }
+}
+
+// Parse RRULE count component
+fn parse_rrule_count(rrule: &str) -> Option<u32> {
+    if let Some(start) = rrule.find("COUNT=") {
+        let count_part = &rrule[start + 6..];
+        if let Some(end) = count_part.find(';') {
+            count_part[..end].parse().ok()
+        } else {
+            count_part.parse().ok()
+        }
+    } else {
+        None
+    }
+}
+
+// Parse RRULE until component
+fn parse_rrule_until(rrule: &str) -> Option<chrono::NaiveDate> {
+    if let Some(start) = rrule.find("UNTIL=") {
+        let until_part = &rrule[start + 6..];
+        let until_str = if let Some(end) = until_part.find(';') {
+            &until_part[..end]
+        } else {
+            until_part
+        };
+        
+        // UNTIL can be in format YYYYMMDD or YYYYMMDDTHHMMSSZ
+        let date_part = if until_str.len() >= 8 {
+            &until_str[..8]
+        } else {
+            until_str
+        };
+        
+        // Parse YYYYMMDD format
+        if date_part.len() == 8 {
+            if let (Ok(year), Ok(month), Ok(day)) = (
+                date_part[0..4].parse::<i32>(),
+                date_part[4..6].parse::<u32>(),
+                date_part[6..8].parse::<u32>(),
+            ) {
+                chrono::NaiveDate::from_ymd_opt(year, month, day)
+            } else {
+                None
+            }
+        } else {
+            None
+        }
+    } else {
+        None
+    }
+}
+
+// Parse RRULE BYDAY component for weekly recurrence
+fn parse_rrule_days(rrule: &str) -> Vec<bool> {
+    let mut days = vec![false; 7]; // [Sun, Mon, Tue, Wed, Thu, Fri, Sat]
+    
+    if let Some(start) = rrule.find("BYDAY=") {
+        let byday_part = &rrule[start + 6..];
+        let byday_str = if let Some(end) = byday_part.find(';') {
+            &byday_part[..end]
+        } else {
+            byday_part
+        };
+        
+        // Parse comma-separated day codes: SU,MO,TU,WE,TH,FR,SA
+        for day_code in byday_str.split(',') {
+            match day_code.trim() {
+                "SU" => days[0] = true, // Sunday
+                "MO" => days[1] = true, // Monday
+                "TU" => days[2] = true, // Tuesday
+                "WE" => days[3] = true, // Wednesday
+                "TH" => days[4] = true, // Thursday
+                "FR" => days[5] = true, // Friday
+                "SA" => days[6] = true, // Saturday
+                _ => {} // Ignore unknown day codes
+            }
+        }
+    }
+    
+    days
+}

frontend/src/components/event_context_menu.rs

@@ -24,7 +24,9 @@ pub struct EventContextMenuProps {
     pub event: Option<VEvent>,
     pub on_edit: Callback<EditAction>,
     pub on_delete: Callback<DeleteAction>,
+    pub on_view_details: Callback<VEvent>,
     pub on_close: Callback<()>,
+    pub on_edit_singleton: Callback<VEvent>, // New callback for editing singleton events without scope
 }
 
 #[function_component(EventContextMenu)]
@@ -91,6 +93,14 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
         .map(|event| event.rrule.is_some())
         .unwrap_or(false);
     
+    // Check if the event is from an external calendar (read-only)
+    let is_external = props
+        .event
+        .as_ref()
+        .and_then(|event| event.calendar_path.as_ref())
+        .map(|path| path.starts_with("external_"))
+        .unwrap_or(false);
+
     let create_edit_callback = |action: EditAction| {
         let on_edit = props.on_edit.clone();
         let on_close = props.on_close.clone();
@@ -100,6 +110,18 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
         })
     };
 
+    let create_singleton_edit_callback = {
+        let on_edit_singleton = props.on_edit_singleton.clone();
+        let on_close = props.on_close.clone();
+        let event = props.event.clone();
+        Callback::from(move |_: MouseEvent| {
+            if let Some(event) = &event {
+                on_edit_singleton.emit(event.clone());
+            }
+            on_close.emit(());
+        })
+    };
+
     let create_delete_callback = |action: DeleteAction| {
         let on_delete = props.on_delete.clone();
         let on_close = props.on_close.clone();
@@ -109,6 +131,18 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
         })
     };
 
+    let create_view_details_callback = {
+        let on_view_details = props.on_view_details.clone();
+        let on_close = props.on_close.clone();
+        let event = props.event.clone();
+        Callback::from(move |_: MouseEvent| {
+            if let Some(event) = &event {
+                on_view_details.emit(event.clone());
+            }
+            on_close.emit(());
+        })
+    };
+
     html! {
         <div
             ref={menu_ref}
@@ -116,7 +150,15 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
             style={style}
         >
             {
-                if is_recurring {
+                if is_external {
+                    // External calendar events are read-only - only show "View Details"
+                    html! {
+                        <div class="context-menu-item" onclick={create_view_details_callback}>
+                            {"View Event Details"}
+                        </div>
+                    }
+                } else if is_recurring {
+                    // Regular recurring events - show edit options
                     html! {
                         <>
                             <div class="context-menu-item" onclick={create_edit_callback(EditAction::EditThis)}>
@@ -131,14 +173,17 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
                         </>
                     }
                 } else {
+                    // Regular single events - show edit option without setting edit scope
                     html! {
-                        <div class="context-menu-item" onclick={create_edit_callback(EditAction::EditThis)}>
+                        <div class="context-menu-item" onclick={create_singleton_edit_callback}>
                             {"Edit Event"}
                         </div>
                     }
                 }
             }
             {
+                if !is_external {
+                    // Only show delete options for non-external events
                     if is_recurring {
                         html! {
                             <>
@@ -160,6 +205,10 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
                             </div>
                         }
                     }
+                } else {
+                    // No delete options for external events
+                    html! {}
+                }
             }
         </div>
     }

frontend/src/components/event_form/add_alarm_modal.rs

@@ -0,0 +1,296 @@
+use calendar_models::{VAlarm, AlarmAction, AlarmTrigger};
+use chrono::{Duration, DateTime, Utc, NaiveTime};
+use wasm_bindgen::JsCast;
+use web_sys::{HtmlSelectElement, HtmlInputElement};
+use yew::prelude::*;
+
+#[derive(Clone, PartialEq)]
+pub enum TriggerType {
+    Relative, // Duration before/after event
+    Absolute, // Specific date/time
+}
+
+#[derive(Clone, PartialEq)]
+pub enum RelativeTo {
+    Start,
+    End,
+}
+
+#[derive(Clone, PartialEq)]
+pub enum TimeUnit {
+    Minutes,
+    Hours,
+    Days,
+    Weeks,
+}
+
+#[derive(Properties, PartialEq)]
+pub struct AddAlarmModalProps {
+    pub is_open: bool,
+    pub editing_index: Option<usize>, // If editing an existing alarm
+    pub initial_alarm: Option<VAlarm>, // For editing mode
+    pub on_close: Callback<()>,
+    pub on_save: Callback<VAlarm>,
+}
+
+#[function_component(AddAlarmModal)]
+pub fn add_alarm_modal(props: &AddAlarmModalProps) -> Html {
+    // Form state
+    let trigger_type = use_state(|| TriggerType::Relative);
+    let relative_to = use_state(|| RelativeTo::Start);
+    let time_unit = use_state(|| TimeUnit::Minutes);
+    let time_value = use_state(|| 15i32);
+    let before_after = use_state(|| true); // true = before, false = after
+    let absolute_date = use_state(|| chrono::Local::now().date_naive());
+    let absolute_time = use_state(|| NaiveTime::from_hms_opt(9, 0, 0).unwrap());
+
+    // Initialize form with existing alarm data if editing
+    {
+        let trigger_type = trigger_type.clone();
+        let time_value = time_value.clone();
+        
+        use_effect_with(props.initial_alarm.clone(), move |initial_alarm| {
+            if let Some(alarm) = initial_alarm {
+                match &alarm.trigger {
+                    AlarmTrigger::Duration(duration) => {
+                        trigger_type.set(TriggerType::Relative);
+                        let minutes = duration.num_minutes().abs();
+                        time_value.set(minutes as i32);
+                    }
+                    AlarmTrigger::DateTime(_) => {
+                        trigger_type.set(TriggerType::Absolute);
+                    }
+                }
+            }
+        });
+    }
+
+    let on_trigger_type_change = {
+        let trigger_type = trigger_type.clone();
+        Callback::from(move |e: Event| {
+            if let Some(target) = e.target_dyn_into::<HtmlSelectElement>() {
+                let new_type = match target.value().as_str() {
+                    "absolute" => TriggerType::Absolute,
+                    _ => TriggerType::Relative,
+                };
+                trigger_type.set(new_type);
+            }
+        })
+    };
+
+
+    let on_relative_to_change = {
+        let relative_to = relative_to.clone();
+        Callback::from(move |e: Event| {
+            if let Some(target) = e.target_dyn_into::<HtmlSelectElement>() {
+                let new_relative = match target.value().as_str() {
+                    "end" => RelativeTo::End,
+                    _ => RelativeTo::Start,
+                };
+                relative_to.set(new_relative);
+            }
+        })
+    };
+
+    let on_time_unit_change = {
+        let time_unit = time_unit.clone();
+        Callback::from(move |e: Event| {
+            if let Some(target) = e.target_dyn_into::<HtmlSelectElement>() {
+                let new_unit = match target.value().as_str() {
+                    "hours" => TimeUnit::Hours,
+                    "days" => TimeUnit::Days,
+                    "weeks" => TimeUnit::Weeks,
+                    _ => TimeUnit::Minutes,
+                };
+                time_unit.set(new_unit);
+            }
+        })
+    };
+
+    let on_time_value_change = {
+        let time_value = time_value.clone();
+        Callback::from(move |e: Event| {
+            if let Some(target) = e.target_dyn_into::<HtmlInputElement>() {
+                if let Ok(value) = target.value().parse::<i32>() {
+                    time_value.set(value.max(1)); // Minimum 1
+                }
+            }
+        })
+    };
+
+    let on_before_after_change = {
+        let before_after = before_after.clone();
+        Callback::from(move |e: Event| {
+            if let Some(target) = e.target_dyn_into::<HtmlSelectElement>() {
+                let is_before = target.value() == "before";
+                before_after.set(is_before);
+            }
+        })
+    };
+
+
+
+    let on_save_click = {
+        let trigger_type = trigger_type.clone();
+        let time_unit = time_unit.clone();
+        let time_value = time_value.clone();
+        let before_after = before_after.clone();
+        let absolute_date = absolute_date.clone();
+        let absolute_time = absolute_time.clone();
+        let on_save = props.on_save.clone();
+        
+        Callback::from(move |_| {
+            // Create the alarm trigger
+            let trigger = match *trigger_type {
+                TriggerType::Relative => {
+                    let minutes = match *time_unit {
+                        TimeUnit::Minutes => *time_value,
+                        TimeUnit::Hours => *time_value * 60,
+                        TimeUnit::Days => *time_value * 60 * 24,
+                        TimeUnit::Weeks => *time_value * 60 * 24 * 7,
+                    };
+                    
+                    let signed_minutes = if *before_after { -minutes } else { minutes } as i64;
+                    AlarmTrigger::Duration(Duration::minutes(signed_minutes))
+                }
+                TriggerType::Absolute => {
+                    // Combine date and time to create a DateTime<Utc>
+                    let naive_datetime = absolute_date.and_time(*absolute_time);
+                    let utc_datetime = DateTime::from_naive_utc_and_offset(naive_datetime, Utc);
+                    AlarmTrigger::DateTime(utc_datetime)
+                }
+            };
+
+            // Create the VAlarm - always use Display action, no custom description
+            let alarm = VAlarm {
+                action: AlarmAction::Display,
+                trigger,
+                duration: None,
+                repeat: None,
+                description: None,
+                summary: None,
+                attendees: Vec::new(),
+                attach: Vec::new(),
+            };
+
+            on_save.emit(alarm);
+        })
+    };
+
+    let on_backdrop_click = {
+        let on_close = props.on_close.clone();
+        Callback::from(move |e: MouseEvent| {
+            if let Some(target) = e.target() {
+                if let Some(element) = target.dyn_ref::<web_sys::Element>() {
+                    if element.class_list().contains("add-alarm-backdrop") {
+                        on_close.emit(());
+                    }
+                }
+            }
+        })
+    };
+
+    if !props.is_open {
+        return html! {};
+    }
+
+    html! {
+        <div class="add-alarm-backdrop" onclick={on_backdrop_click}>
+            <div class="add-alarm-modal">
+                <div class="add-alarm-header">
+                    <h3>{
+                        if props.editing_index.is_some() { 
+                            "Edit Reminder" 
+                        } else { 
+                            "Add Reminder" 
+                        }
+                    }</h3>
+                    <button class="close-button" onclick={Callback::from({
+                        let on_close = props.on_close.clone();
+                        move |_| on_close.emit(())
+                    })}>
+                        {"×"}
+                    </button>
+                </div>
+
+                <div class="add-alarm-content">
+                    // Trigger Type Selection
+                    <div class="form-group">
+                        <label for="trigger-type">{"Trigger Type"}</label>
+                        <select id="trigger-type" class="form-input" onchange={on_trigger_type_change}>
+                            <option value="relative" selected={matches!(*trigger_type, TriggerType::Relative)}>
+                                {"Relative to event time"}
+                            </option>
+                            <option value="absolute" selected={matches!(*trigger_type, TriggerType::Absolute)}>
+                                {"Specific date and time"}
+                            </option>
+                        </select>
+                    </div>
+
+                    // Relative Trigger Configuration
+                    if matches!(*trigger_type, TriggerType::Relative) {
+                        <div class="form-group">
+                            <label>{"When"}</label>
+                            <div class="relative-time-inputs">
+                                <input 
+                                    type="number" 
+                                    class="form-input time-value-input"
+                                    value={time_value.to_string()}
+                                    min="1"
+                                    onchange={on_time_value_change}
+                                />
+                                <select class="form-input time-unit-select" onchange={on_time_unit_change}>
+                                    <option value="minutes" selected={matches!(*time_unit, TimeUnit::Minutes)}>{"minute(s)"}</option>
+                                    <option value="hours" selected={matches!(*time_unit, TimeUnit::Hours)}>{"hour(s)"}</option>
+                                    <option value="days" selected={matches!(*time_unit, TimeUnit::Days)}>{"day(s)"}</option>
+                                    <option value="weeks" selected={matches!(*time_unit, TimeUnit::Weeks)}>{"week(s)"}</option>
+                                </select>
+                                <select class="form-input before-after-select" onchange={on_before_after_change}>
+                                    <option value="before" selected={*before_after}>{"before"}</option>
+                                    <option value="after" selected={!*before_after}>{"after"}</option>
+                                </select>
+                                <select class="form-input relative-to-select" onchange={on_relative_to_change}>
+                                    <option value="start" selected={matches!(*relative_to, RelativeTo::Start)}>{"event start"}</option>
+                                    <option value="end" selected={matches!(*relative_to, RelativeTo::End)}>{"event end"}</option>
+                                </select>
+                            </div>
+                        </div>
+                    }
+
+                    // Absolute Trigger Configuration  
+                    if matches!(*trigger_type, TriggerType::Absolute) {
+                        <div class="form-group">
+                            <label>{"Date and Time"}</label>
+                            <div class="absolute-time-inputs">
+                                <input 
+                                    type="date" 
+                                    class="form-input"
+                                    value={absolute_date.format("%Y-%m-%d").to_string()}
+                                />
+                                <input 
+                                    type="time" 
+                                    class="form-input"
+                                    value={absolute_time.format("%H:%M").to_string()}
+                                />
+                            </div>
+                        </div>
+                    }
+
+
+                </div>
+
+                <div class="add-alarm-footer">
+                    <button class="cancel-button" onclick={Callback::from({
+                        let on_close = props.on_close.clone();
+                        move |_| on_close.emit(())
+                    })}>
+                        {"Cancel"}
+                    </button>
+                    <button class="save-button" onclick={on_save_click}>
+                        {if props.editing_index.is_some() { "Update" } else { "Add Reminder" }}
+                    </button>
+                </div>
+            </div>
+        </div>
+    }
+}

frontend/src/components/event_form/alarm_list.rs

@@ -0,0 +1,133 @@
+use calendar_models::{VAlarm, AlarmAction, AlarmTrigger};
+use chrono::Duration;
+use yew::prelude::*;
+
+#[derive(Properties, PartialEq)]
+pub struct AlarmListProps {
+    pub alarms: Vec<VAlarm>,
+    pub on_alarm_delete: Callback<usize>, // Index of alarm to delete
+    pub on_alarm_edit: Callback<usize>,   // Index of alarm to edit
+}
+
+#[function_component(AlarmList)]
+pub fn alarm_list(props: &AlarmListProps) -> Html {
+    if props.alarms.is_empty() {
+        return html! {
+            <div class="alarm-list-empty">
+                <p class="text-muted">{"No reminders set"}</p>
+                <p class="text-small">{"Click 'Add Reminder' to create your first reminder"}</p>
+            </div>
+        };
+    }
+
+    html! {
+        <div class="alarm-list">
+            <h6>{"Configured Reminders"}</h6>
+            <div class="alarm-items">
+                {
+                    props.alarms.iter().enumerate().map(|(index, alarm)| {
+                        let alarm_description = format_alarm_description(alarm);
+                        let action_icon = get_action_icon(&alarm.action);
+                        
+                        let on_delete = {
+                            let on_alarm_delete = props.on_alarm_delete.clone();
+                            Callback::from(move |_| {
+                                on_alarm_delete.emit(index);
+                            })
+                        };
+                        
+                        let on_edit = {
+                            let on_alarm_edit = props.on_alarm_edit.clone();
+                            Callback::from(move |_| {
+                                on_alarm_edit.emit(index);
+                            })
+                        };
+
+                        html! {
+                            <div key={index} class="alarm-item">
+                                <div class="alarm-content">
+                                    <span class="alarm-icon">{action_icon}</span>
+                                    <span class="alarm-description">{alarm_description}</span>
+                                </div>
+                                <div class="alarm-actions">
+                                    <button 
+                                        class="alarm-action-btn edit-btn" 
+                                        title="Edit reminder"
+                                        onclick={on_edit}
+                                    >
+                                        <i class="fas fa-edit"></i>
+                                    </button>
+                                    <button 
+                                        class="alarm-action-btn delete-btn" 
+                                        title="Delete reminder"
+                                        onclick={on_delete}
+                                    >
+                                        <i class="fas fa-trash"></i>
+                                    </button>
+                                </div>
+                            </div>
+                        }
+                    }).collect::<Html>()
+                }
+            </div>
+        </div>
+    }
+}
+
+/// Format alarm description for display
+fn format_alarm_description(alarm: &VAlarm) -> String {
+    match &alarm.trigger {
+        AlarmTrigger::Duration(duration) => {
+            format_duration_description(duration)
+        }
+        AlarmTrigger::DateTime(datetime) => {
+            format!("At {}", datetime.format("%Y-%m-%d %H:%M UTC"))
+        }
+    }
+}
+
+/// Get icon for alarm action - always use bell for consistent notification type
+fn get_action_icon(_action: &AlarmAction) -> Html {
+    html! { <i class="fas fa-bell"></i> }
+}
+
+/// Format duration for human-readable description
+fn format_duration_description(duration: &Duration) -> String {
+    let minutes = duration.num_minutes();
+    
+    if minutes == 0 {
+        return "At event time".to_string();
+    }
+    
+    let abs_minutes = minutes.abs();
+    let before_or_after = if minutes < 0 { "before" } else { "after" };
+    
+    // Convert to human-readable format
+    if abs_minutes >= 60 * 24 * 7 {
+        let weeks = abs_minutes / (60 * 24 * 7);
+        let remainder = abs_minutes % (60 * 24 * 7);
+        if remainder == 0 {
+            format!("{} week{} {}", weeks, if weeks == 1 { "" } else { "s" }, before_or_after)
+        } else {
+            format!("{} minutes {}", abs_minutes, before_or_after)
+        }
+    } else if abs_minutes >= 60 * 24 {
+        let days = abs_minutes / (60 * 24);
+        let remainder = abs_minutes % (60 * 24);
+        if remainder == 0 {
+            format!("{} day{} {}", days, if days == 1 { "" } else { "s" }, before_or_after)
+        } else {
+            format!("{} minutes {}", abs_minutes, before_or_after)
+        }
+    } else if abs_minutes >= 60 {
+        let hours = abs_minutes / 60;
+        let remainder = abs_minutes % 60;
+        if remainder == 0 {
+            format!("{} hour{} {}", hours, if hours == 1 { "" } else { "s" }, before_or_after)
+        } else {
+            format!("{} minutes {}", abs_minutes, before_or_after)
+        }
+    } else {
+        format!("{} minute{} {}", abs_minutes, if abs_minutes == 1 { "" } else { "s" }, before_or_after)
+    }
+}

frontend/src/components/event_form/basic_details.rs

@@ -99,26 +99,13 @@ pub fn basic_details_tab(props: &TabProps) -> Html {
         })
     };
 
-    let on_reminder_change = {
-        let data = data.clone();
-        Callback::from(move |e: Event| {
-            if let Some(target) = e.target() {
-                if let Ok(select) = target.dyn_into::<HtmlSelectElement>() {
-                    let mut event_data = (*data).clone();
-                    event_data.reminder = match select.value().as_str() {
-                        "15min" => ReminderType::Minutes15,
-                        "30min" => ReminderType::Minutes30,
-                        "1hour" => ReminderType::Hour1,
-                        "1day" => ReminderType::Day1,
-                        "2days" => ReminderType::Days2,
-                        "1week" => ReminderType::Week1,
-                        _ => ReminderType::None,
-                    };
-                    data.set(event_data);
-                }
-            }
-        })
-    };
+    // TODO: Replace with new alarm management UI
+    // let on_reminder_change = {
+    //     let data = data.clone();
+    //     Callback::from(move |e: Event| {
+    //         // Will be replaced with VAlarm management
+    //     })
+    // };
 
     let on_recurrence_interval_change = {
         let data = data.clone();
@@ -321,6 +308,7 @@ pub fn basic_details_tab(props: &TabProps) -> Html {
                 ></textarea>
             </div>
 
+            <div class="form-row">
                 <div class="form-group">
                     <label for="event-calendar">{"Calendar"}</label>
                     <select
@@ -345,18 +333,6 @@ pub fn basic_details_tab(props: &TabProps) -> Html {
                     </select>
                 </div>
 
-            <div class="form-group">
-                <label class="checkbox-label">
-                    <input
-                        type="checkbox"
-                        checked={data.all_day}
-                        onchange={on_all_day_change}
-                    />
-                    {" All Day"}
-                </label>
-            </div>
-
-            <div class="form-row">
                 <div class="form-group">
                     <label for="event-recurrence-basic">{"Repeat"}</label>
                     <select
@@ -371,21 +347,6 @@ pub fn basic_details_tab(props: &TabProps) -> Html {
                         <option value="yearly" selected={matches!(data.recurrence, RecurrenceType::Yearly)}>{"Yearly"}</option>
                     </select>
                 </div>
-
-                <div class="form-group">
-                    <label for="event-reminder-basic">{"Reminder"}</label>
-                    <select
-                        id="event-reminder-basic"
-                        class="form-input"
-                        onchange={on_reminder_change}
-                    >
-                        <option value="none" selected={matches!(data.reminder, ReminderType::None)}>{"None"}</option>
-                        <option value="15min" selected={matches!(data.reminder, ReminderType::Minutes15)}>{"15 minutes before"}</option>
-                        <option value="30min" selected={matches!(data.reminder, ReminderType::Minutes30)}>{"30 minutes before"}</option>
-                        <option value="1hour" selected={matches!(data.reminder, ReminderType::Hour1)}>{"1 hour before"}</option>
-                        <option value="1day" selected={matches!(data.reminder, ReminderType::Day1)}>{"1 day before"}</option>
-                    </select>
-                </div>
             </div>
 
             // RECURRENCE OPTIONS GO RIGHT HERE - directly below repeat/reminder!
@@ -659,6 +620,18 @@ pub fn basic_details_tab(props: &TabProps) -> Html {
                 </div>
             }
 
+            // All Day checkbox above date/time fields
+            <div class="form-group">
+                <label class="checkbox-label">
+                    <input
+                        type="checkbox"
+                        checked={data.all_day}
+                        onchange={on_all_day_change}
+                    />
+                    {" All Day"}
+                </label>
+            </div>
+
             // Date and time fields go here AFTER recurrence options
             <div class="form-row">
                 <div class="form-group">

frontend/src/components/event_form/mod.rs

@@ -1,5 +1,7 @@
 // Event form components module
 pub mod types;
+pub mod alarm_list;
+pub mod add_alarm_modal;
 pub mod basic_details;
 pub mod advanced;
 pub mod people;
@@ -8,6 +10,8 @@ pub mod location;
 pub mod reminders;
 
 pub use types::*;
+pub use alarm_list::AlarmList;
+pub use add_alarm_modal::AddAlarmModal;
 pub use basic_details::BasicDetailsTab;
 pub use advanced::AdvancedTab;
 pub use people::PeopleTab;

frontend/src/components/event_form/reminders.rs

@@ -1,100 +1,116 @@
-use super::types::*;
-// Types are already imported from super::types::*
-use wasm_bindgen::JsCast;
-use web_sys::HtmlSelectElement;
+use super::{types::*, AlarmList, AddAlarmModal};
+use calendar_models::VAlarm;
 use yew::prelude::*;
 
 #[function_component(RemindersTab)]
 pub fn reminders_tab(props: &TabProps) -> Html {
     let data = &props.data;
     
-    let on_reminder_change = {
-        let data = data.clone();
-        Callback::from(move |e: Event| {
-            if let Some(target) = e.target() {
-                if let Ok(select) = target.dyn_into::<HtmlSelectElement>() {
-                    let mut event_data = (*data).clone();
-                    event_data.reminder = match select.value().as_str() {
-                        "15min" => ReminderType::Minutes15,
-                        "30min" => ReminderType::Minutes30,
-                        "1hour" => ReminderType::Hour1,
-                        "1day" => ReminderType::Day1,
-                        "2days" => ReminderType::Days2,
-                        "1week" => ReminderType::Week1,
-                        _ => ReminderType::None,
+    // Modal state
+    let is_modal_open = use_state(|| false);
+    let editing_index = use_state(|| None::<usize>);
+    
+    // Add alarm callback
+    let on_add_alarm = {
+        let is_modal_open = is_modal_open.clone();
+        let editing_index = editing_index.clone();
+        Callback::from(move |_| {
+            editing_index.set(None);
+            is_modal_open.set(true);
+        })
     };
-                    data.set(event_data);
-                }
+    
+    // Edit alarm callback
+    let on_alarm_edit = {
+        let is_modal_open = is_modal_open.clone();
+        let editing_index = editing_index.clone();
+        Callback::from(move |index: usize| {
+            editing_index.set(Some(index));
+            is_modal_open.set(true);
+        })
+    };
+    
+    // Delete alarm callback
+    let on_alarm_delete = {
+        let data = data.clone();
+        Callback::from(move |index: usize| {
+            let mut current_data = (*data).clone();
+            if index < current_data.alarms.len() {
+                current_data.alarms.remove(index);
+                data.set(current_data);
             }
         })
     };
     
+    // Close modal callback
+    let on_modal_close = {
+        let is_modal_open = is_modal_open.clone();
+        let editing_index = editing_index.clone();
+        Callback::from(move |_| {
+            is_modal_open.set(false);
+            editing_index.set(None);
+        })
+    };
+    
+    // Save alarm callback
+    let on_alarm_save = {
+        let data = data.clone();
+        let is_modal_open = is_modal_open.clone();
+        let editing_index = editing_index.clone();
+        Callback::from(move |alarm: VAlarm| {
+            let mut current_data = (*data).clone();
+            
+            if let Some(index) = *editing_index {
+                // Edit existing alarm
+                if index < current_data.alarms.len() {
+                    current_data.alarms[index] = alarm;
+                }
+            } else {
+                // Add new alarm
+                current_data.alarms.push(alarm);
+            }
+            
+            data.set(current_data);
+            is_modal_open.set(false);
+            editing_index.set(None);
+        })
+    };
+    
+    // Get initial alarm for editing
+    let initial_alarm = (*editing_index).and_then(|index| {
+        data.alarms.get(index).cloned()
+    });
+
     html! {
         <div class="tab-panel">
             <div class="form-group">
-                <label for="event-reminder-main">{"Primary Reminder"}</label>
-                <select
-                    id="event-reminder-main"
-                    class="form-input"
-                    onchange={on_reminder_change}
+                <div class="alarm-management-header">
+                    <h5>{"Event Reminders"}</h5>
+                    <button 
+                        class="add-alarm-button" 
+                        onclick={on_add_alarm}
+                        type="button"
                     >
-                    <option value="none" selected={matches!(data.reminder, ReminderType::None)}>{"No reminder"}</option>
-                    <option value="15min" selected={matches!(data.reminder, ReminderType::Minutes15)}>{"15 minutes before"}</option>
-                    <option value="30min" selected={matches!(data.reminder, ReminderType::Minutes30)}>{"30 minutes before"}</option>
-                    <option value="1hour" selected={matches!(data.reminder, ReminderType::Hour1)}>{"1 hour before"}</option>
-                    <option value="1day" selected={matches!(data.reminder, ReminderType::Day1)}>{"1 day before"}</option>
-                    <option value="2days" selected={matches!(data.reminder, ReminderType::Days2)}>{"2 days before"}</option>
-                    <option value="1week" selected={matches!(data.reminder, ReminderType::Week1)}>{"1 week before"}</option>
-                </select>
-                <p class="form-help-text">{"Choose when you'd like to be reminded about this event"}</p>
+                        <i class="fas fa-plus"></i>
+                        {" Add Reminder"}
+                    </button>
+                </div>
+                <p class="form-help-text">{"Configure multiple reminders with custom timing and notification types"}</p>
             </div>
 
-            <div class="reminder-types">
-                <h5>{"Reminder & Alarm Types"}</h5>
-                <div class="alarm-examples">
-                    <div class="alarm-type">
-                        <strong>{"Display Alarm"}</strong>
-                        <p>{"Pop-up notification on your device"}</p>
-                    </div>
-                    <div class="alarm-type">
-                        <strong>{"Email Reminder"}</strong>
-                        <p>{"Email notification sent to your address"}</p>
-                    </div>
-                    <div class="alarm-type">
-                        <strong>{"Audio Alert"}</strong>
-                        <p>{"Sound notification with custom audio"}</p>
-                    </div>
-                    <div class="alarm-type">
-                        <strong>{"SMS/Text"}</strong>
-                        <p>{"Text message reminder (enterprise feature)"}</p>
-                    </div>
-                </div>
-                <p class="form-help-text">{"Multiple alarm types follow RFC 5545 VALARM standards"}</p>
-            </div>
+            <AlarmList
+                alarms={data.alarms.clone()}
+                on_alarm_delete={on_alarm_delete}
+                on_alarm_edit={on_alarm_edit}
+            />
 
-            <div class="reminder-info">
-                <h5>{"Advanced Reminder Features"}</h5>
-                <ul>
-                    <li>{"Multiple reminders per event with different timing"}</li>
-                    <li>{"Custom reminder messages and descriptions"}</li>
-                    <li>{"Recurring reminders for recurring events"}</li>
-                    <li>{"Snooze and dismiss functionality"}</li>
-                    <li>{"Integration with system notifications"}</li>
-                </ul>
-
-                <div class="attachments-section">
-                    <h6>{"File Attachments & Documents"}</h6>
-                    <p>{"Future attachment features will include:"}</p>
-                    <ul>
-                        <li>{"Drag-and-drop file uploads"}</li>
-                        <li>{"Document preview and thumbnails"}</li>
-                        <li>{"Cloud storage integration (Google Drive, OneDrive)"}</li>
-                        <li>{"Version control for updated documents"}</li>
-                        <li>{"Shared access permissions for attendees"}</li>
-                    </ul>
-                    <p class="form-help-text">{"Attachment functionality will be implemented in a future release."}</p>
-                </div>
-            </div>
+            <AddAlarmModal
+                is_open={*is_modal_open}
+                editing_index={*editing_index}
+                initial_alarm={initial_alarm}
+                on_close={on_modal_close}
+                on_save={on_alarm_save}
+            />
         </div>
     }
 }

frontend/src/components/event_form/types.rs

@@ -1,6 +1,7 @@
 use crate::services::calendar_service::CalendarInfo;
 use chrono::{Local, NaiveDate, NaiveTime};
 use yew::prelude::*;
+use calendar_models::VAlarm;
 
 #[derive(Clone, PartialEq, Debug)]
 pub enum EventStatus {
@@ -28,22 +29,6 @@ impl Default for EventClass {
     }
 }
 
-#[derive(Clone, PartialEq, Debug)]
-pub enum ReminderType {
-    None,
-    Minutes15,
-    Minutes30,
-    Hour1,
-    Day1,
-    Days2,
-    Week1,
-}
-
-impl Default for ReminderType {
-    fn default() -> Self {
-        ReminderType::None
-    }
-}
 
 #[derive(Clone, PartialEq, Debug)]
 pub enum RecurrenceType {
@@ -104,8 +89,8 @@ pub struct EventCreationData {
     // Categorization
     pub categories: String,
     
-    // Reminders
-    pub reminder: ReminderType,
+    // Reminders/Alarms
+    pub alarms: Vec<VAlarm>,
     
     // Recurrence
     pub recurrence: RecurrenceType,
@@ -145,20 +130,49 @@ impl EventCreationData {
         String, // organizer
         String, // attendees
         String, // categories
-        String, // reminder
+        Vec<VAlarm>, // alarms
         String, // recurrence
         Vec<bool>, // recurrence_days
-        Option<String>, // calendar_path
+        u32, // recurrence_interval
         Option<u32>, // recurrence_count
         Option<String>, // recurrence_until
+        Option<String>, // calendar_path
+        String, // timezone
     ) {
+        
+        // Use local date/times and timezone - no UTC conversion
+        let effective_end_date = if self.all_day {
+            // For all-day events, add one day to convert from inclusive to exclusive end date
+            // (iCalendar spec requires exclusive end dates for all-day events)
+            self.end_date + chrono::Duration::days(1)
+        } else {
+            self.end_date
+        };
+        
+        // Get the local timezone
+        let timezone = {
+            use js_sys::Date;
+            let date = Date::new_0();
+            let timezone_offset = date.get_timezone_offset(); // Minutes from UTC
+            let hours = -(timezone_offset as i32) / 60; // Convert to hours, negate for proper sign
+            let minutes = (timezone_offset as i32).abs() % 60;
+            format!("{:+03}:{:02}", hours, minutes) // Format as +05:00 or -04:00
+        };
+        
+        let (start_date, start_time, end_date, end_time) = (
+            self.start_date.format("%Y-%m-%d").to_string(),
+            self.start_time.format("%H:%M").to_string(),
+            effective_end_date.format("%Y-%m-%d").to_string(),
+            self.end_time.format("%H:%M").to_string(),
+        );
+        
         (
             self.title.clone(),
             self.description.clone(),
-            self.start_date.format("%Y-%m-%d").to_string(),
-            self.start_time.format("%H:%M").to_string(),
-            self.end_date.format("%Y-%m-%d").to_string(),
-            self.end_time.format("%H:%M").to_string(),
+            start_date,
+            start_time,
+            end_date,
+            end_time,
             self.location.clone(),
             self.all_day,
             format!("{:?}", self.status).to_uppercase(),
@@ -167,12 +181,14 @@ impl EventCreationData {
             self.organizer.clone(),
             self.attendees.clone(),
             self.categories.clone(),
-            format!("{:?}", self.reminder),
+            self.alarms.clone(),
             format!("{:?}", self.recurrence),
             self.recurrence_days.clone(),
-            self.selected_calendar.clone(),
+            self.recurrence_interval,
             self.recurrence_count,
             self.recurrence_until.map(|d| d.format("%Y-%m-%d").to_string()),
+            self.selected_calendar.clone(),
+            timezone,
         )
     }
 }
@@ -199,7 +215,7 @@ impl Default for EventCreationData {
             organizer: String::new(),
             attendees: String::new(),
             categories: String::new(),
-            reminder: ReminderType::default(),
+            alarms: Vec::new(),
             recurrence: RecurrenceType::default(),
             recurrence_interval: 1,
             recurrence_until: None,

frontend/src/components/event_modal.rs

@@ -1,5 +1,4 @@
 use crate::models::ical::VEvent;
-use chrono::{DateTime, Utc};
 use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
@@ -213,7 +212,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
     }
 }
 
-fn format_datetime(dt: &DateTime<Utc>, all_day: bool) -> String {
+fn format_datetime(dt: &chrono::NaiveDateTime, all_day: bool) -> String {
     if all_day {
         dt.format("%B %d, %Y").to_string()
     } else {
@@ -221,7 +220,7 @@ fn format_datetime(dt: &DateTime<Utc>, all_day: bool) -> String {
     }
 }
 
-fn format_datetime_end(dt: &DateTime<Utc>, all_day: bool) -> String {
+fn format_datetime_end(dt: &chrono::NaiveDateTime, all_day: bool) -> String {
     if all_day {
         // For all-day events, subtract one day from end date for display
         // RFC-5545 uses exclusive end dates, but users expect inclusive display

frontend/src/components/external_calendar_modal.rs

@@ -0,0 +1,222 @@
+use web_sys::HtmlInputElement;
+use yew::prelude::*;
+
+use crate::services::calendar_service::CalendarService;
+
+#[derive(Properties, PartialEq)]
+pub struct ExternalCalendarModalProps {
+    pub is_open: bool,
+    pub on_close: Callback<()>,
+    pub on_success: Callback<i32>, // Pass the newly created calendar ID
+}
+
+#[function_component(ExternalCalendarModal)]
+pub fn external_calendar_modal(props: &ExternalCalendarModalProps) -> Html {
+    let name_ref = use_node_ref();
+    let url_ref = use_node_ref();
+    let color_ref = use_node_ref();
+    let is_loading = use_state(|| false);
+    let error_message = use_state(|| None::<String>);
+
+    let on_submit = {
+        let name_ref = name_ref.clone();
+        let url_ref = url_ref.clone();
+        let color_ref = color_ref.clone();
+        let is_loading = is_loading.clone();
+        let error_message = error_message.clone();
+        let on_close = props.on_close.clone();
+        let on_success = props.on_success.clone();
+
+        Callback::from(move |e: SubmitEvent| {
+            e.prevent_default();
+            
+            let name = name_ref
+                .cast::<HtmlInputElement>()
+                .map(|input| input.value())
+                .unwrap_or_default()
+                .trim()
+                .to_string();
+            
+            let url = url_ref
+                .cast::<HtmlInputElement>()
+                .map(|input| input.value())
+                .unwrap_or_default()
+                .trim()
+                .to_string();
+                
+            let color = color_ref
+                .cast::<HtmlInputElement>()
+                .map(|input| input.value())
+                .unwrap_or_else(|| "#4285f4".to_string());
+
+            if name.is_empty() {
+                error_message.set(Some("Calendar name is required".to_string()));
+                return;
+            }
+
+            if url.is_empty() {
+                error_message.set(Some("Calendar URL is required".to_string()));
+                return;
+            }
+
+            // Basic URL validation
+            if !url.starts_with("http://") && !url.starts_with("https://") {
+                error_message.set(Some("Please enter a valid HTTP or HTTPS URL".to_string()));
+                return;
+            }
+
+            error_message.set(None);
+            is_loading.set(true);
+
+            let is_loading = is_loading.clone();
+            let error_message = error_message.clone();
+            let on_close = on_close.clone();
+            let on_success = on_success.clone();
+
+            wasm_bindgen_futures::spawn_local(async move {
+                match CalendarService::create_external_calendar(&name, &url, &color).await {
+                    Ok(new_calendar) => {
+                        is_loading.set(false);
+                        on_success.emit(new_calendar.id);
+                        on_close.emit(());
+                    }
+                    Err(e) => {
+                        is_loading.set(false);
+                        error_message.set(Some(format!("Failed to add calendar: {}", e)));
+                    }
+                }
+            });
+        })
+    };
+
+    let on_cancel = {
+        let on_close = props.on_close.clone();
+        Callback::from(move |_| {
+            on_close.emit(());
+        })
+    };
+    
+    let on_cancel_clone = on_cancel.clone();
+
+    if !props.is_open {
+        return html! {};
+    }
+
+    html! {
+        <div class="modal-backdrop" onclick={on_cancel_clone}>
+            <div class="external-calendar-modal" onclick={Callback::from(|e: MouseEvent| e.stop_propagation())}>
+                <div class="modal-header">
+                    <h3>{"Add External Calendar"}</h3>
+                    <button class="modal-close" onclick={on_cancel.clone()}>{"×"}</button>
+                </div>
+                
+                <form onsubmit={on_submit}>
+                    <div class="modal-body">
+                        {
+                            if let Some(error) = (*error_message).as_ref() {
+                                html! {
+                                    <div class="error-message">
+                                        {error}
+                                    </div>
+                                }
+                            } else {
+                                html! {}
+                            }
+                        }
+                        
+                        <div class="form-help" style="margin-bottom: 1.5rem; padding: 1rem; background: #f8f9fa; border-radius: 8px; border-left: 4px solid #007bff;">
+                            <h4 style="margin: 0 0 0.5rem 0; font-size: 0.9rem; color: #495057;">{"Setting up External Calendars"}</h4>
+                            <p style="margin: 0 0 0.5rem 0; font-size: 0.8rem; line-height: 1.4;">
+                                {"Currently tested with Outlook 365 and Google Calendar. To get your calendar link:"}
+                            </p>
+                            
+                            <div style="margin-bottom: 1rem;">
+                                <strong style="font-size: 0.8rem; color: #495057;">{"Outlook 365:"}</strong>
+                                <ol style="margin: 0.3rem 0 0 0; padding-left: 1.2rem; font-size: 0.8rem; line-height: 1.3;">
+                                    <li>{"Go to Outlook Settings"}</li>
+                                    <li>{"Navigate to Calendar → Shared Calendars"}</li>
+                                    <li>{"Click \"Publish a calendar\""}</li>
+                                    <li>{"Select your calendar and choose \"Can view all details\""}</li>
+                                    <li>{"Copy the ICS link and paste it below"}</li>
+                                </ol>
+                            </div>
+                            
+                            <div>
+                                <strong style="font-size: 0.8rem; color: #495057;">{"Google Calendar:"}</strong>
+                                <ol style="margin: 0.3rem 0 0 0; padding-left: 1.2rem; font-size: 0.8rem; line-height: 1.3;">
+                                    <li>{"Hover over your calendar name in the left sidebar"}</li>
+                                    <li>{"Click the three dots that appear"}</li>
+                                    <li>{"Select \"Settings and sharing\""}</li>
+                                    <li>{"Scroll to \"Integrate calendar\""}</li>
+                                    <li>{"Copy the \"Public address in iCal format\" link"}</li>
+                                </ol>
+                            </div>
+                        </div>
+                        
+                        <div class="form-group">
+                            <label for="external-calendar-name">{"Calendar Name"}</label>
+                            <input
+                                ref={name_ref}
+                                id="external-calendar-name"
+                                type="text"
+                                placeholder="My External Calendar"
+                                disabled={*is_loading}
+                                required={true}
+                            />
+                        </div>
+
+                        <div class="form-group">
+                            <label for="external-calendar-url">{"ICS URL"}</label>
+                            <input
+                                ref={url_ref}
+                                id="external-calendar-url"
+                                type="url"
+                                placeholder="https://example.com/calendar.ics"
+                                disabled={*is_loading}
+                                required={true}
+                            />
+                            <small class="form-help">
+                                {"Enter the public ICS URL for the calendar you want to add"}
+                            </small>
+                        </div>
+
+                        <div class="form-group">
+                            <label for="external-calendar-color">{"Color"}</label>
+                            <input
+                                ref={color_ref}
+                                id="external-calendar-color"
+                                type="color"
+                                value="#4285f4"
+                                disabled={*is_loading}
+                            />
+                        </div>
+                    </div>
+
+                    <div class="modal-actions">
+                        <button
+                            type="button"
+                            class="btn btn-secondary"
+                            onclick={on_cancel}
+                            disabled={*is_loading}
+                        >
+                            {"Cancel"}
+                        </button>
+                        <button
+                            type="submit"
+                            class="btn btn-primary"
+                            disabled={*is_loading}
+                        >
+                            {
+                                if *is_loading {
+                                    "Adding..."
+                                } else {
+                                    "Add Calendar"
+                                }
+                            }
+                        </button>
+                    </div>
+                </form>
+            </div>
+        </div>
+    }
+}

frontend/src/components/login.rs

@@ -24,23 +24,40 @@ pub fn Login(props: &LoginProps) -> Html {
     let remember_server = use_state(|| true);
     let remember_username = use_state(|| true);
     
+    // Password visibility toggle
+    let show_password = use_state(|| false);
+
     let server_url_ref = use_node_ref();
     let username_ref = use_node_ref();
     let password_ref = use_node_ref();
 
     let on_server_url_change = {
         let server_url = server_url.clone();
+        let remember_server = remember_server.clone();
         Callback::from(move |e: Event| {
             let target = e.target_unchecked_into::<HtmlInputElement>();
-            server_url.set(target.value());
+            let new_value = target.value();
+            server_url.set(new_value.clone());
+            
+            // Save to localStorage immediately if remember is checked
+            if *remember_server {
+                let _ = LocalStorage::set("remembered_server_url", new_value);
+            }
         })
     };
 
     let on_username_change = {
         let username = username.clone();
+        let remember_username = remember_username.clone();
         Callback::from(move |e: Event| {
             let target = e.target_unchecked_into::<HtmlInputElement>();
-            username.set(target.value());
+            let new_value = target.value();
+            username.set(new_value.clone());
+            
+            // Save to localStorage immediately if remember is checked
+            if *remember_username {
+                let _ = LocalStorage::set("remembered_username", new_value);
+            }
         })
     };
 
@@ -84,12 +101,21 @@ pub fn Login(props: &LoginProps) -> Html {
         })
     };
     
+    let on_toggle_password_visibility = {
+        let show_password = show_password.clone();
+        Callback::from(move |_| {
+            show_password.set(!*show_password);
+        })
+    };
+
     let on_submit = {
         let server_url = server_url.clone();
         let username = username.clone();
         let password = password.clone();
         let error_message = error_message.clone();
         let is_loading = is_loading.clone();
+        let remember_server = remember_server.clone();
+        let remember_username = remember_username.clone();
         let on_login = props.on_login.clone();
 
         Callback::from(move |e: SubmitEvent| {
@@ -100,6 +126,8 @@ pub fn Login(props: &LoginProps) -> Html {
             let password = (*password).clone();
             let error_message = error_message.clone();
             let is_loading = is_loading.clone();
+            let remember_server_value = *remember_server;
+            let remember_username_value = *remember_username;
             let on_login = on_login.clone();
 
             // Basic client-side validation
@@ -140,11 +168,23 @@ pub fn Login(props: &LoginProps) -> Html {
                             let _ = LocalStorage::set("user_preferences", &prefs_json);
                         }
 
+                        // Save server URL and username to LocalStorage if remember checkboxes are checked
+                        if remember_server_value {
+                            let _ = LocalStorage::set("remembered_server_url", server_url.clone());
+                        }
+                        if remember_username_value {
+                            let _ = LocalStorage::set("remembered_username", username.clone());
+                        }
+
                         is_loading.set(false);
                         on_login.emit(token);
                     }
                     Err(err) => {
                         web_sys::console::log_1(&format!("❌ Login failed: {}", err).into());
+                        // Clear any existing invalid tokens
+                        let _ = LocalStorage::delete("auth_token");
+                        let _ = LocalStorage::delete("session_token");
+                        let _ = LocalStorage::delete("caldav_credentials");
                         error_message.set(Some(err));
                         is_loading.set(false);
                     }
@@ -160,6 +200,7 @@ pub fn Login(props: &LoginProps) -> Html {
                 <form onsubmit={on_submit}>
                     <div class="form-group">
                         <label for="server_url">{"CalDAV Server URL"}</label>
+                        <div class="input-with-checkbox">
                             <input
                                 ref={server_url_ref}
                                 type="text"
@@ -168,20 +209,24 @@ pub fn Login(props: &LoginProps) -> Html {
                                 value={(*server_url).clone()}
                                 onchange={on_server_url_change}
                                 disabled={*is_loading}
+                                tabindex="1"
                             />
                             <div class="remember-checkbox">
+                                <label for="remember_server">{"Remember"}</label>
                                 <input
                                     type="checkbox"
                                     id="remember_server"
                                     checked={*remember_server}
                                     onchange={on_remember_server_change}
+                                    tabindex="4"
                                 />
-                            <label for="remember_server">{"Remember server"}</label>
+                            </div>
                         </div>
                     </div>
 
                     <div class="form-group">
                         <label for="username">{"Username"}</label>
+                        <div class="input-with-checkbox">
                             <input
                                 ref={username_ref}
                                 type="text"
@@ -190,29 +235,44 @@ pub fn Login(props: &LoginProps) -> Html {
                                 value={(*username).clone()}
                                 onchange={on_username_change}
                                 disabled={*is_loading}
+                                tabindex="2"
                             />
                             <div class="remember-checkbox">
+                                <label for="remember_username">{"Remember"}</label>
                                 <input
                                     type="checkbox"
                                     id="remember_username"
                                     checked={*remember_username}
                                     onchange={on_remember_username_change}
+                                    tabindex="5"
                                 />
-                            <label for="remember_username">{"Remember username"}</label>
+                            </div>
                         </div>
                     </div>
 
                     <div class="form-group">
                         <label for="password">{"Password"}</label>
+                        <div class="password-input-container">
                             <input
                                 ref={password_ref}
-                            type="password"
+                                type={if *show_password { "text" } else { "password" }}
                                 id="password"
                                 placeholder="Enter your password"
                                 value={(*password).clone()}
                                 onchange={on_password_change}
                                 disabled={*is_loading}
+                                tabindex="3"
                             />
+                            <button
+                                type="button"
+                                class="password-toggle-btn"
+                                onclick={on_toggle_password_visibility}
+                                tabindex="6"
+                                title={if *show_password { "Hide password" } else { "Show password" }}
+                            >
+                                <i class={if *show_password { "fas fa-eye-slash" } else { "fas fa-eye" }}></i>
+                            </button>
+                        </div>
                     </div>
 
                     {

frontend/src/components/mobile_warning_modal.rs

@@ -0,0 +1,96 @@
+use yew::prelude::*;
+use web_sys::window;
+use wasm_bindgen::JsCast;
+
+#[derive(Properties, PartialEq)]
+pub struct MobileWarningModalProps {
+    pub is_open: bool,
+    pub on_close: Callback<()>,
+}
+
+#[function_component(MobileWarningModal)]
+pub fn mobile_warning_modal(props: &MobileWarningModalProps) -> Html {
+    let on_backdrop_click = {
+        let on_close = props.on_close.clone();
+        Callback::from(move |e: MouseEvent| {
+            if let Some(target) = e.target() {
+                let element = target.dyn_into::<web_sys::Element>().unwrap();
+                if element.class_list().contains("modal-overlay") {
+                    on_close.emit(());
+                }
+            }
+        })
+    };
+
+    if !props.is_open {
+        return html! {};
+    }
+
+    html! {
+        <div class="modal-overlay mobile-warning-overlay" onclick={on_backdrop_click}>
+            <div class="modal-content mobile-warning-modal">
+                <div class="modal-header">
+                    <h2>{"Desktop Application"}</h2>
+                    <button class="modal-close" onclick={
+                        let on_close = props.on_close.clone();
+                        Callback::from(move |_: MouseEvent| on_close.emit(()))
+                    }>{"×"}</button>
+                </div>
+                <div class="modal-body">
+                    <div class="mobile-warning-icon">
+                        {"💻"}
+                    </div>
+                    <p class="mobile-warning-title">
+                        {"This calendar application is designed for desktop usage"}
+                    </p>
+                    <p class="mobile-warning-description">
+                        {"For the best mobile calendar experience, we recommend using dedicated CalDAV apps available on your device's app store:"}
+                    </p>
+                    <ul class="mobile-warning-apps">
+                        <li>
+                            <strong>{"iOS:"}</strong>
+                            {" Calendar (built-in), Calendars 5, Fantastical"}
+                        </li>
+                        <li>
+                            <strong>{"Android:"}</strong>
+                            {" Google Calendar, DAVx5, CalDAV Sync"}
+                        </li>
+                    </ul>
+                    <p class="mobile-warning-note">
+                        {"These apps can sync with the same CalDAV server you're using here."}
+                    </p>
+                </div>
+                <div class="modal-footer">
+                    <button class="continue-anyway-button" onclick={
+                        let on_close = props.on_close.clone();
+                        Callback::from(move |_: MouseEvent| on_close.emit(()))
+                    }>
+                        {"Continue Anyway"}
+                    </button>
+                </div>
+            </div>
+        </div>
+    }
+}
+
+// Helper function to detect mobile devices
+pub fn is_mobile_device() -> bool {
+    if let Some(window) = window() {
+        let navigator = window.navigator();
+        let user_agent = navigator.user_agent().unwrap_or_default();
+        let user_agent = user_agent.to_lowercase();
+        
+        // Check for mobile device indicators
+        user_agent.contains("mobile")
+            || user_agent.contains("android")
+            || user_agent.contains("iphone")
+            || user_agent.contains("ipad")
+            || user_agent.contains("ipod")
+            || user_agent.contains("blackberry")
+            || user_agent.contains("webos")
+            || user_agent.contains("opera mini")
+            || user_agent.contains("windows phone")
+    } else {
+        false
+    }
+}

frontend/src/components/mod.rs

@@ -1,15 +1,20 @@
 pub mod calendar;
 pub mod calendar_context_menu;
+pub mod calendar_management_modal;
 pub mod calendar_header;
 pub mod calendar_list_item;
+pub mod color_editor_modal;
 pub mod context_menu;
 pub mod create_calendar_modal;
 pub mod create_event_modal;
 pub mod event_context_menu;
 pub mod event_form;
 pub mod event_modal;
+pub mod external_calendar_modal;
 pub mod login;
+pub mod mobile_warning_modal;
 pub mod month_view;
+pub mod print_preview_modal;
 pub mod recurring_edit_modal;
 pub mod route_handler;
 pub mod sidebar;
@@ -17,17 +22,20 @@ pub mod week_view;
 
 pub use calendar::Calendar;
 pub use calendar_context_menu::CalendarContextMenu;
+pub use calendar_management_modal::CalendarManagementModal;
 pub use calendar_header::CalendarHeader;
 pub use calendar_list_item::CalendarListItem;
+pub use color_editor_modal::ColorEditorModal;
 pub use context_menu::ContextMenu;
-pub use create_calendar_modal::CreateCalendarModal;
 pub use create_event_modal::CreateEventModal;
 // Re-export event form types for backwards compatibility
 pub use event_form::EventCreationData;
 pub use event_context_menu::{DeleteAction, EditAction, EventContextMenu};
 pub use event_modal::EventModal;
 pub use login::Login;
+pub use mobile_warning_modal::MobileWarningModal;
 pub use month_view::MonthView;
+pub use print_preview_modal::PrintPreviewModal;
 pub use recurring_edit_modal::{RecurringEditAction, RecurringEditModal};
 pub use route_handler::RouteHandler;
 pub use sidebar::{Sidebar, Theme, ViewMode};

frontend/src/components/month_view.rs

@@ -1,5 +1,5 @@
 use crate::models::ical::VEvent;
-use crate::services::calendar_service::UserInfo;
+use crate::services::calendar_service::{UserInfo, ExternalCalendar};
 use chrono::{Datelike, NaiveDate, Weekday};
 use std::collections::HashMap;
 use wasm_bindgen::{prelude::*, JsCast};
@@ -17,6 +17,8 @@ pub struct MonthViewProps {
     #[prop_or_default]
     pub user_info: Option<UserInfo>,
     #[prop_or_default]
+    pub external_calendars: Vec<ExternalCalendar>,
+    #[prop_or_default]
     pub on_event_context_menu: Option<Callback<(web_sys::MouseEvent, VEvent)>>,
     #[prop_or_default]
     pub on_calendar_context_menu: Option<Callback<(web_sys::MouseEvent, NaiveDate)>>,
@@ -85,8 +87,20 @@ pub fn month_view(props: &MonthViewProps) -> Html {
 
     // Helper function to get calendar color for an event
     let get_event_color = |event: &VEvent| -> String {
-        if let Some(user_info) = &props.user_info {
         if let Some(calendar_path) = &event.calendar_path {
+            // Check external calendars first (path format: "external_{id}")
+            if calendar_path.starts_with("external_") {
+                if let Ok(id_str) = calendar_path.strip_prefix("external_").unwrap_or("").parse::<i32>() {
+                    if let Some(external_calendar) = props.external_calendars
+                        .iter()
+                        .find(|cal| cal.id == id_str)
+                    {
+                        return external_calendar.color.clone();
+                    }
+                }
+            }
+            // Check regular calendars
+            else if let Some(user_info) = &props.user_info {
                 if let Some(calendar) = user_info
                     .calendars
                     .iter()
@@ -99,8 +113,14 @@ pub fn month_view(props: &MonthViewProps) -> Html {
         "#3B82F6".to_string()
     };
 
+    
+    let weeks_needed = calculate_minimum_weeks_needed(first_weekday, days_in_month);
+    
+    // Use calculated weeks with height-based container sizing for proper fit
+    let dynamic_style = format!("grid-template-rows: var(--weekday-header-height, 50px) repeat({}, 1fr);", weeks_needed);
+    
     html! {
-        <div class="calendar-grid">
+        <div class="calendar-grid" style={dynamic_style}>
             // Weekday headers
             <div class="weekday-header">{"Sun"}</div>
             <div class="weekday-header">{"Mon"}</div>
@@ -194,10 +214,14 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                                             <div
                                                 class={classes!("event-box", if is_refreshing { Some("refreshing") } else { None })}
                                                 style={format!("background-color: {}", event_color)}
+                                                data-external={event.categories.contains(&"__EXTERNAL_CALENDAR__".to_string()).to_string()}
                                                 {onclick}
                                                 {oncontextmenu}
                                             >
-                                                {event.summary.as_ref().unwrap_or(&"Untitled".to_string())}
+                                                <span class="event-title">{event.summary.as_ref().unwrap_or(&"Untitled".to_string())}</span>
+                                                if !event.alarms.is_empty() {
+                                                    <i class="fas fa-bell event-reminder-icon" title="Has reminders"></i>
+                                                }
                                             </div>
                                         }
                                     }).collect::<Html>()
@@ -219,13 +243,27 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                 }).collect::<Html>()
             }
 
-            { render_next_month_days(days_from_prev_month.len(), days_in_month) }
+            { render_next_month_days(days_from_prev_month.len(), days_in_month, calculate_minimum_weeks_needed(first_weekday, days_in_month)) }
         </div>
     }
 }
 
-fn render_next_month_days(prev_days_count: usize, current_days_count: u32) -> Html {
-    let total_slots = 42; // 6 rows x 7 days
+fn calculate_minimum_weeks_needed(first_weekday: Weekday, days_in_month: u32) -> u32 {
+    let days_before = match first_weekday {
+        Weekday::Sun => 0,
+        Weekday::Mon => 1,
+        Weekday::Tue => 2,
+        Weekday::Wed => 3,
+        Weekday::Thu => 4,
+        Weekday::Fri => 5,
+        Weekday::Sat => 6,
+    };
+    let total_days_needed = days_before + days_in_month;
+    (total_days_needed + 6) / 7 // Round up to get number of weeks
+}
+
+fn render_next_month_days(prev_days_count: usize, current_days_count: u32, weeks_needed: u32) -> Html {
+    let total_slots = (weeks_needed * 7) as usize; // Dynamic based on weeks needed
     let used_slots = prev_days_count + current_days_count as usize;
     let remaining_slots = if used_slots < total_slots {
         total_slots - used_slots

frontend/src/components/print_preview_modal.rs

@@ -0,0 +1,377 @@
+use crate::components::{ViewMode, WeekView, MonthView, CalendarHeader};
+use crate::models::ical::VEvent;
+use crate::services::calendar_service::{UserInfo, ExternalCalendar};
+use chrono::NaiveDate;
+use std::collections::HashMap;
+use wasm_bindgen::{closure::Closure, JsCast};
+use web_sys::MouseEvent;
+use yew::prelude::*;
+
+#[derive(Properties, PartialEq)]
+pub struct PrintPreviewModalProps {
+    pub on_close: Callback<()>,
+    pub view_mode: ViewMode,
+    pub current_date: NaiveDate,
+    pub selected_date: NaiveDate,
+    pub events: HashMap<NaiveDate, Vec<VEvent>>,
+    pub user_info: Option<UserInfo>,
+    pub external_calendars: Vec<ExternalCalendar>,
+    pub time_increment: u32,
+    pub today: NaiveDate,
+}
+
+#[function_component]
+pub fn PrintPreviewModal(props: &PrintPreviewModalProps) -> Html {
+    let start_hour = use_state(|| 6u32);
+    let end_hour = use_state(|| 22u32);
+    let zoom_level = use_state(|| 0.4f64); // Default 40% zoom
+
+    let close_modal = {
+        let on_close = props.on_close.clone();
+        Callback::from(move |_| {
+            on_close.emit(());
+        })
+    };
+
+    let backdrop_click = {
+        let on_close = props.on_close.clone();
+        Callback::from(move |e: MouseEvent| {
+            if e.target() == e.current_target() {
+                on_close.emit(());
+            }
+        })
+    };
+
+    let on_start_hour_change = {
+        let start_hour = start_hour.clone();
+        let end_hour = end_hour.clone();
+        Callback::from(move |e: Event| {
+            let target = e.target_dyn_into::<web_sys::HtmlSelectElement>();
+            if let Some(select) = target {
+                if let Ok(hour) = select.value().parse::<u32>() {
+                    if hour < *end_hour {
+                        start_hour.set(hour);
+                    }
+                }
+            }
+        })
+    };
+
+    let on_end_hour_change = {
+        let start_hour = start_hour.clone();
+        let end_hour = end_hour.clone();
+        Callback::from(move |e: Event| {
+            let target = e.target_dyn_into::<web_sys::HtmlSelectElement>();
+            if let Some(select) = target {
+                if let Ok(hour) = select.value().parse::<u32>() {
+                    if hour > *start_hour && hour <= 24 {
+                        end_hour.set(hour);
+                    }
+                }
+            }
+        })
+    };
+
+
+    let format_hour = |hour: u32| -> String {
+        if hour == 0 {
+            "12 AM".to_string()
+        } else if hour < 12 {
+            format!("{} AM", hour)
+        } else if hour == 12 {
+            "12 PM".to_string()
+        } else {
+            format!("{} PM", hour - 12)
+        }
+    };
+
+    // Calculate dynamic base unit for print preview
+    let calculate_print_dimensions = |start_hour: u32, end_hour: u32, time_increment: u32| -> (f64, f64, f64) {
+        let visible_hours = (end_hour - start_hour) as f64;
+        let slots_per_hour = if time_increment == 15 { 4.0 } else { 2.0 };
+        let calendar_header_height = 80.0; // Calendar header height in print preview
+        let week_header_height = 50.0; // Fixed week header height in print preview  
+        let header_border = 2.0;   // Week header bottom border (2px solid)
+        let container_spacing = 8.0; // Additional container spacing/margins
+        let total_overhead = calendar_header_height + week_header_height + header_border + container_spacing;
+        let available_height = 720.0 - total_overhead; // Available for time content
+        let base_unit = available_height / (visible_hours * slots_per_hour);
+        let pixels_per_hour = base_unit * slots_per_hour;
+        
+        (base_unit, pixels_per_hour, available_height)
+    };
+
+    // Calculate print dimensions for the current hour range
+    let (base_unit, pixels_per_hour, _available_height) = calculate_print_dimensions(*start_hour, *end_hour, props.time_increment);
+
+    // Effect to update print copy whenever modal renders or content changes
+    {
+        let start_hour = *start_hour;
+        let end_hour = *end_hour;
+        let time_increment = props.time_increment;
+        let original_base_unit = base_unit;
+        use_effect(move || {
+            if let Some(window) = web_sys::window() {
+                if let Some(document) = window.document() {
+                    // Set CSS variables on document root
+                    if let Some(document_element) = document.document_element() {
+                        if let Some(html_element) = document_element.dyn_ref::<web_sys::HtmlElement>() {
+                            let style = html_element.style();
+                            let _ = style.set_property("--print-start-hour", &start_hour.to_string());
+                            let _ = style.set_property("--print-end-hour", &end_hour.to_string());
+                        }
+                    }
+
+                    // Copy content from print-preview-content to the hidden print-preview-copy div
+                    let copy_content = move || {
+                        if let Some(preview_content) = document.query_selector(".print-preview-content").ok().flatten() {
+                            if let Some(print_copy) = document.get_element_by_id("print-preview-copy") {
+                                // Clone the preview content
+                                if let Some(content_clone) = preview_content.clone_node_with_deep(true).ok() {
+                                    // Clear the print copy div and add the cloned content
+                                    print_copy.set_inner_html("");
+                                    let _ = print_copy.append_child(&content_clone);
+                                    
+                                    // Get the actual rendered height of the print copy div and recalculate base-unit
+                                    if let Some(print_copy_html) = print_copy.dyn_ref::<web_sys::HtmlElement>() {
+                                        // Temporarily make visible to measure height, then hide again
+                                        let original_display = print_copy_html.style().get_property_value("display").unwrap_or_default();
+                                        let _ = print_copy_html.style().set_property("display", "block");
+                                        let _ = print_copy_html.style().set_property("visibility", "hidden");
+                                        let _ = print_copy_html.style().set_property("position", "absolute");
+                                        let _ = print_copy_html.style().set_property("top", "-9999px");
+                                        
+                                        // Now measure the height
+                                        let actual_height = print_copy_html.client_height() as f64;
+                                        
+                                        // Restore original display
+                                        let _ = print_copy_html.style().set_property("display", &original_display);
+                                        let _ = print_copy_html.style().remove_property("visibility");
+                                        let _ = print_copy_html.style().remove_property("position");
+                                        let _ = print_copy_html.style().remove_property("top");
+                                        
+                                        // Recalculate base-unit and pixels-per-hour based on actual height
+                                        let visible_hours = (end_hour - start_hour) as f64;
+                                        let slots_per_hour = if time_increment == 15 { 4.0 } else { 2.0 };
+                                        let calendar_header_height = 80.0; // Calendar header height
+                                        let week_header_height = 50.0; // Week header height
+                                        let header_border = 2.0;
+                                        let container_spacing = 8.0;
+                                        let total_overhead = calendar_header_height + week_header_height + header_border + container_spacing;
+                                        let available_height = actual_height - total_overhead;
+                                        let actual_base_unit = available_height / (visible_hours * slots_per_hour);
+                                        let actual_pixels_per_hour = actual_base_unit * slots_per_hour;
+                                        
+                                        
+                                        // Set CSS variables with recalculated values
+                                        let style = print_copy_html.style();
+                                        let _ = style.set_property("--print-base-unit", &format!("{:.2}", actual_base_unit));
+                                        let _ = style.set_property("--print-pixels-per-hour", &format!("{:.2}", actual_pixels_per_hour));
+                                        let _ = style.set_property("--print-start-hour", &start_hour.to_string());
+                                        let _ = style.set_property("--print-end-hour", &end_hour.to_string());
+                                        
+                                        // Copy data attributes
+                                        let _ = print_copy.set_attribute("data-start-hour", &start_hour.to_string());
+                                        let _ = print_copy.set_attribute("data-end-hour", &end_hour.to_string());
+                                        
+                                        // Recalculate event positions using the new base-unit
+                                        let events = print_copy.query_selector_all(".week-event").unwrap();
+                                        let scale_factor = actual_base_unit / original_base_unit;
+                                        
+                                        for i in 0..events.length() {
+                                            if let Some(event_element) = events.get(i) {
+                                                if let Some(event_html) = event_element.dyn_ref::<web_sys::HtmlElement>() {
+                                                    let event_style = event_html.style();
+                                                    
+                                                    // Get current positioning values and recalculate
+                                                    if let Ok(current_top) = event_style.get_property_value("top") {
+                                                        if current_top.ends_with("px") {
+                                                            if let Ok(top_px) = current_top[..current_top.len()-2].parse::<f64>() {
+                                                                let new_top = top_px * scale_factor;
+                                                                let _ = event_style.set_property("top", &format!("{:.2}px", new_top));
+                                                            }
+                                                        }
+                                                    }
+                                                    
+                                                    if let Ok(current_height) = event_style.get_property_value("height") {
+                                                        if current_height.ends_with("px") {
+                                                            if let Ok(height_px) = current_height[..current_height.len()-2].parse::<f64>() {
+                                                                let new_height = height_px * scale_factor;
+                                                                let _ = event_style.set_property("height", &format!("{:.2}px", new_height));
+                                                            }
+                                                        }
+                                                    }
+                                                }
+                                            }
+                                        }
+                                        
+                                        web_sys::console::log_1(&format!("Height: {:.2}, Original base-unit: {:.2}, New base-unit: {:.2}, Scale factor: {:.2}", 
+                                            actual_height, original_base_unit, actual_base_unit, scale_factor).into());
+                                    }
+                                }
+                            }
+                        }
+                    };
+
+                    // Copy content immediately
+                    copy_content();
+
+                    // Also set up a small delay to catch any async rendering
+                    let copy_callback = Closure::wrap(Box::new(copy_content) as Box<dyn FnMut()>);
+                    let _ = window.set_timeout_with_callback_and_timeout_and_arguments_0(
+                        copy_callback.as_ref().unchecked_ref(),
+                        100
+                    );
+                    copy_callback.forget();
+                }
+            }
+            || ()
+        });
+    }
+    
+    let on_print = {
+        Callback::from(move |_: MouseEvent| {
+            if let Some(window) = web_sys::window() {
+                // Print copy is already updated by the use_effect, just trigger print
+                let _ = window.print();
+            }
+        })
+    };
+
+    html! {
+        <div class="modal-backdrop print-preview-modal-backdrop" onclick={backdrop_click}>
+            <div class="modal-content print-preview-modal">
+                <div class="modal-header">
+                    <h3>{"Print Preview"}</h3>
+                    <button class="modal-close" onclick={close_modal.clone()}>{"×"}</button>
+                </div>
+                <div class="modal-body print-preview-body">
+                    <div class="print-preview-controls">
+                        {
+                            if props.view_mode == ViewMode::Week {
+                                html! {
+                                    <>
+                                        <div class="control-group">
+                                            <label for="start-hour">{"Start Hour:"}</label>
+                                            <select id="start-hour" onchange={on_start_hour_change}>
+                                                {
+                                                    (0..24).map(|hour| {
+                                                        html! {
+                                                            <option value={hour.to_string()} selected={hour == *start_hour}>
+                                                                {format_hour(hour)}
+                                                            </option>
+                                                        }
+                                                    }).collect::<Html>()
+                                                }
+                                            </select>
+                                        </div>
+                                        <div class="control-group">
+                                            <label for="end-hour">{"End Hour:"}</label>
+                                            <select id="end-hour" onchange={on_end_hour_change}>
+                                                {
+                                                    (1..=24).map(|hour| {
+                                                        html! {
+                                                            <option value={hour.to_string()} selected={hour == *end_hour}>
+                                                                {if hour == 24 { "12 AM".to_string() } else { format_hour(hour) }}
+                                                            </option>
+                                                        }
+                                                    }).collect::<Html>()
+                                                }
+                                            </select>
+                                        </div>
+                                        <div class="hour-range-info">
+                                            {format!("Will print from {} to {}", 
+                                                format_hour(*start_hour), 
+                                                if *end_hour == 24 { "12 AM".to_string() } else { format_hour(*end_hour) }
+                                            )}
+                                        </div>
+                                    </>
+                                }
+                            } else {
+                                html! {
+                                    <div class="month-info">
+                                        {"Will print entire month view"}
+                                    </div>
+                                }
+                            }
+                        }
+                        <div class="zoom-display-info">
+                            <label>{"Zoom: "}</label>
+                            <span>{format!("{}%", (*zoom_level * 100.0) as i32)}</span>
+                            <span class="zoom-hint">{"(scroll to zoom)"}</span>
+                        </div>
+                        <div class="preview-actions">
+                            <button class="btn-primary" onclick={on_print}>{"Print"}</button>
+                            <button class="btn-secondary" onclick={close_modal}>{"Cancel"}</button>
+                        </div>
+                    </div>
+                    <div class="print-preview-display" onwheel={{
+                        let zoom_level = zoom_level.clone();
+                        Callback::from(move |e: WheelEvent| {
+                            e.prevent_default(); // Prevent page scroll
+                            let delta_y = e.delta_y();
+                            let zoom_change = if delta_y < 0.0 { 1.1 } else { 1.0 / 1.1 };
+                            let new_zoom = (*zoom_level * zoom_change).clamp(0.2, 1.5);
+                            zoom_level.set(new_zoom);
+                        })
+                    }}>
+                        <div class="print-preview-paper" 
+                                     data-start-hour={start_hour.to_string()} 
+                                     data-end-hour={end_hour.to_string()}
+                                     style={format!(
+                                         "--print-start-hour: {}; --print-end-hour: {}; --print-base-unit: {:.2}; --print-pixels-per-hour: {:.2}; transform: scale({}); transform-origin: top center;", 
+                                         *start_hour, *end_hour, base_unit, pixels_per_hour, *zoom_level
+                                     )}>
+                            <div class="print-preview-content">
+                                <div class={classes!("calendar", match props.view_mode { ViewMode::Week => Some("week-view"), _ => None })}>
+                                    <CalendarHeader
+                                        current_date={props.current_date}
+                                        view_mode={props.view_mode.clone()}
+                                        on_prev={Callback::from(|_: MouseEvent| {})}
+                                        on_next={Callback::from(|_: MouseEvent| {})}
+                                        on_today={Callback::from(|_: MouseEvent| {})}
+                                        time_increment={Some(props.time_increment)}
+                                        on_time_increment_toggle={None::<Callback<MouseEvent>>}
+                                        on_print={None::<Callback<MouseEvent>>}
+                                    />
+                                    {
+                                        match props.view_mode {
+                                            ViewMode::Week => html! {
+                                                <WeekView
+                                                    key={format!("week-preview-{}-{}", *start_hour, *end_hour)}
+                                                    current_date={props.current_date}
+                                                    today={props.today}
+                                                    events={props.events.clone()}
+                                                    on_event_click={Callback::noop()}
+                                                    user_info={props.user_info.clone()}
+                                                    external_calendars={props.external_calendars.clone()}
+                                                    time_increment={props.time_increment}
+                                                    print_mode={true}
+                                                    print_pixels_per_hour={Some(pixels_per_hour)}
+                                                    print_start_hour={Some(*start_hour)}
+                                                />
+                                            },
+                                            ViewMode::Month => html! {
+                                                <MonthView
+                                                    key={format!("month-preview-{}-{}", *start_hour, *end_hour)}
+                                                    current_month={props.current_date}
+                                                    selected_date={Some(props.selected_date)}
+                                                    today={props.today}
+                                                    events={props.events.clone()}
+                                                    on_day_select={None::<Callback<NaiveDate>>}
+                                                    on_event_click={Callback::noop()}
+                                                    user_info={props.user_info.clone()}
+                                                    external_calendars={props.external_calendars.clone()}
+                                                />
+                                            },
+                                        }
+                                    }
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    }
+}

frontend/src/components/route_handler.rs

@@ -1,6 +1,6 @@
 use crate::components::{Login, ViewMode};
 use crate::models::ical::VEvent;
-use crate::services::calendar_service::UserInfo;
+use crate::services::calendar_service::{UserInfo, ExternalCalendar};
 use yew::prelude::*;
 use yew_router::prelude::*;
 
@@ -20,6 +20,10 @@ pub struct RouteHandlerProps {
     pub user_info: Option<UserInfo>,
     pub on_login: Callback<String>,
     #[prop_or_default]
+    pub external_calendar_events: Vec<VEvent>,
+    #[prop_or_default]
+    pub external_calendars: Vec<ExternalCalendar>,
+    #[prop_or_default]
     pub on_event_context_menu: Option<Callback<(web_sys::MouseEvent, VEvent)>>,
     #[prop_or_default]
     pub on_calendar_context_menu: Option<Callback<(web_sys::MouseEvent, chrono::NaiveDate)>>,
@@ -34,7 +38,7 @@ pub struct RouteHandlerProps {
             chrono::NaiveDateTime,
             chrono::NaiveDateTime,
             bool,
-            Option<chrono::DateTime<chrono::Utc>>,
+            Option<chrono::NaiveDateTime>,
             Option<String>,
             Option<String>,
         )>,
@@ -48,6 +52,8 @@ pub fn route_handler(props: &RouteHandlerProps) -> Html {
     let auth_token = props.auth_token.clone();
     let user_info = props.user_info.clone();
     let on_login = props.on_login.clone();
+    let external_calendar_events = props.external_calendar_events.clone();
+    let external_calendars = props.external_calendars.clone();
     let on_event_context_menu = props.on_event_context_menu.clone();
     let on_calendar_context_menu = props.on_calendar_context_menu.clone();
     let view = props.view.clone();
@@ -60,6 +66,8 @@ pub fn route_handler(props: &RouteHandlerProps) -> Html {
             let auth_token = auth_token.clone();
             let user_info = user_info.clone();
             let on_login = on_login.clone();
+            let external_calendar_events = external_calendar_events.clone();
+            let external_calendars = external_calendars.clone();
             let on_event_context_menu = on_event_context_menu.clone();
             let on_calendar_context_menu = on_calendar_context_menu.clone();
             let view = view.clone();
@@ -87,6 +95,8 @@ pub fn route_handler(props: &RouteHandlerProps) -> Html {
                         html! {
                             <CalendarView
                                 user_info={user_info}
+                                external_calendar_events={external_calendar_events}
+                                external_calendars={external_calendars}
                                 on_event_context_menu={on_event_context_menu}
                                 on_calendar_context_menu={on_calendar_context_menu}
                                 view={view}
@@ -108,6 +118,10 @@ pub fn route_handler(props: &RouteHandlerProps) -> Html {
 pub struct CalendarViewProps {
     pub user_info: Option<UserInfo>,
     #[prop_or_default]
+    pub external_calendar_events: Vec<VEvent>,
+    #[prop_or_default]
+    pub external_calendars: Vec<ExternalCalendar>,
+    #[prop_or_default]
     pub on_event_context_menu: Option<Callback<(web_sys::MouseEvent, VEvent)>>,
     #[prop_or_default]
     pub on_calendar_context_menu: Option<Callback<(web_sys::MouseEvent, chrono::NaiveDate)>>,
@@ -122,7 +136,7 @@ pub struct CalendarViewProps {
             chrono::NaiveDateTime,
             chrono::NaiveDateTime,
             bool,
-            Option<chrono::DateTime<chrono::Utc>>,
+            Option<chrono::NaiveDateTime>,
             Option<String>,
             Option<String>,
         )>,
@@ -139,6 +153,8 @@ pub fn calendar_view(props: &CalendarViewProps) -> Html {
         <div class="calendar-view">
             <Calendar
                 user_info={props.user_info.clone()}
+                external_calendar_events={props.external_calendar_events.clone()}
+                external_calendars={props.external_calendars.clone()}
                 on_event_context_menu={props.on_event_context_menu.clone()}
                 on_calendar_context_menu={props.on_calendar_context_menu.clone()}
                 view={props.view.clone()}

frontend/src/components/sidebar.rs

@@ -1,18 +1,8 @@
 use crate::components::CalendarListItem;
-use crate::services::calendar_service::UserInfo;
+use crate::services::calendar_service::{UserInfo, ExternalCalendar};
 use web_sys::HtmlSelectElement;
 use yew::prelude::*;
-use yew_router::prelude::*;
 
-#[derive(Clone, Routable, PartialEq)]
-pub enum Route {
-    #[at("/")]
-    Home,
-    #[at("/login")]
-    Login,
-    #[at("/calendar")]
-    Calendar,
-}
 
 #[derive(Clone, PartialEq)]
 pub enum ViewMode {
@@ -30,12 +20,17 @@ pub enum Theme {
     Dark,
     Rose,
     Mint,
+    Midnight,
+    Charcoal,
+    Nord,
+    Dracula,
 }
 
 #[derive(Clone, PartialEq)]
 pub enum Style {
     Default,
     Google,
+    Apple,
 }
 
 impl Theme {
@@ -49,6 +44,10 @@ impl Theme {
             Theme::Dark => "dark",
             Theme::Rose => "rose",
             Theme::Mint => "mint",
+            Theme::Midnight => "midnight",
+            Theme::Charcoal => "charcoal",
+            Theme::Nord => "nord",
+            Theme::Dracula => "dracula",
         }
     }
 
@@ -61,6 +60,10 @@ impl Theme {
             "dark" => Theme::Dark,
             "rose" => Theme::Rose,
             "mint" => Theme::Mint,
+            "midnight" => Theme::Midnight,
+            "charcoal" => Theme::Charcoal,
+            "nord" => Theme::Nord,
+            "dracula" => Theme::Dracula,
             _ => Theme::Default,
         }
     }
@@ -71,12 +74,14 @@ impl Style {
         match self {
             Style::Default => "default",
             Style::Google => "google",
+            Style::Apple => "apple",
         }
     }
 
     pub fn from_value(value: &str) -> Self {
         match value {
             "google" => Style::Google,
+            "apple" => Style::Apple,
             _ => Style::Default,
         }
     }
@@ -86,6 +91,7 @@ impl Style {
         match self {
             Style::Default => None, // No additional stylesheet needed - uses base styles.css
             Style::Google => Some("google.css"), // Trunk copies to root level
+            Style::Apple => Some("apple.css"), // Trunk copies to root level
         }
     }
 }
@@ -100,12 +106,19 @@ impl Default for ViewMode {
 pub struct SidebarProps {
     pub user_info: Option<UserInfo>,
     pub on_logout: Callback<()>,
-    pub on_create_calendar: Callback<()>,
+    pub on_add_calendar: Callback<()>,
+    pub external_calendars: Vec<ExternalCalendar>,
+    pub on_external_calendar_toggle: Callback<i32>,
+    pub on_external_calendar_delete: Callback<i32>,
+    pub on_external_calendar_refresh: Callback<i32>,
     pub color_picker_open: Option<String>,
     pub on_color_change: Callback<(String, String)>,
     pub on_color_picker_toggle: Callback<String>,
     pub available_colors: Vec<String>,
+    pub on_color_editor_open: Callback<(usize, String)>, // (index, current_color)
+    pub refreshing_calendar_id: Option<i32>,
     pub on_calendar_context_menu: Callback<(MouseEvent, String)>,
+    pub on_calendar_visibility_toggle: Callback<String>,
     pub current_view: ViewMode,
     pub on_view_change: Callback<ViewMode>,
     pub current_theme: Theme,
@@ -116,6 +129,7 @@ pub struct SidebarProps {
 
 #[function_component(Sidebar)]
 pub fn sidebar(props: &SidebarProps) -> Html {
+    let external_context_menu_open = use_state(|| None::<i32>);
     let on_view_change = {
         let on_view_change = props.on_view_change.clone();
         Callback::from(move |e: Event| {
@@ -155,6 +169,30 @@ pub fn sidebar(props: &SidebarProps) -> Html {
         })
     };
 
+    let on_external_calendar_context_menu = {
+        let external_context_menu_open = external_context_menu_open.clone();
+        Callback::from(move |(e, cal_id): (MouseEvent, i32)| {
+            e.prevent_default();
+            external_context_menu_open.set(Some(cal_id));
+        })
+    };
+
+    let on_external_calendar_delete = {
+        let on_external_calendar_delete = props.on_external_calendar_delete.clone();
+        let external_context_menu_open = external_context_menu_open.clone();
+        Callback::from(move |cal_id: i32| {
+            on_external_calendar_delete.emit(cal_id);
+            external_context_menu_open.set(None);
+        })
+    };
+
+    let close_external_context_menu = {
+        let external_context_menu_open = external_context_menu_open.clone();
+        Callback::from(move |_| {
+            external_context_menu_open.set(None);
+        })
+    };
+
     html! {
         <aside class="app-sidebar">
             <div class="sidebar-header">
@@ -172,9 +210,6 @@ pub fn sidebar(props: &SidebarProps) -> Html {
                     }
                 }
             </div>
-            <nav class="sidebar-nav">
-                <Link<Route> to={Route::Calendar} classes="nav-link">{"Calendar"}</Link<Route>>
-            </nav>
             {
                 if let Some(ref info) = props.user_info {
                     if !info.calendars.is_empty() {
@@ -191,7 +226,9 @@ pub fn sidebar(props: &SidebarProps) -> Html {
                                                     on_color_change={props.on_color_change.clone()}
                                                     on_color_picker_toggle={props.on_color_picker_toggle.clone()}
                                                     available_colors={props.available_colors.clone()}
+                                                    on_color_editor_open={props.on_color_editor_open.clone()}
                                                     on_context_menu={props.on_calendar_context_menu.clone()}
+                                                    on_visibility_toggle={props.on_calendar_visibility_toggle.clone()}
                                                 />
                                             }
                                         }).collect::<Html>()
@@ -206,9 +243,186 @@ pub fn sidebar(props: &SidebarProps) -> Html {
                     html! {}
                 }
             }
+            
+            // External calendars section
+            <div class="external-calendar-list">
+                <h3>{"External Calendars"}</h3>
+                {
+                    if !props.external_calendars.is_empty() {
+                        html! {
+                            <ul class="external-calendar-items">
+                                {
+                                    props.external_calendars.iter().map(|cal| {
+                                        let on_toggle = {
+                                            let on_external_calendar_toggle = props.on_external_calendar_toggle.clone();
+                                            let cal_id = cal.id;
+                                            Callback::from(move |_| {
+                                                on_external_calendar_toggle.emit(cal_id);
+                                            })
+                                        };
+                                        
+                                        html! {
+                                            <li class="external-calendar-item">
+                                                <div 
+                                                    class={if props.color_picker_open.as_ref() == Some(&format!("external_{}", cal.id)) { 
+                                                        "external-calendar-info color-picker-active" 
+                                                    } else { 
+                                                        "external-calendar-info" 
+                                                    }}
+                                                    oncontextmenu={{
+                                                        let on_context_menu = on_external_calendar_context_menu.clone();
+                                                        let cal_id = cal.id;
+                                                        Callback::from(move |e: MouseEvent| {
+                                                            on_context_menu.emit((e, cal_id));
+                                                        })
+                                                    }}
+                                                >
+                                                    <input
+                                                        type="checkbox"
+                                                        checked={cal.is_visible}
+                                                        onchange={on_toggle}
+                                                    />
+                                                    <span 
+                                                        class="external-calendar-color" 
+                                                        style={format!("background-color: {}", cal.color)}
+                                                        onclick={{
+                                                            let on_color_picker_toggle = props.on_color_picker_toggle.clone();
+                                                            let external_id = format!("external_{}", cal.id);
+                                                            Callback::from(move |e: MouseEvent| {
+                                                                e.stop_propagation();
+                                                                on_color_picker_toggle.emit(external_id.clone());
+                                                            })
+                                                        }}
+                                                    >
+                                                        {
+                                                            if props.color_picker_open.as_ref() == Some(&format!("external_{}", cal.id)) {
+                                                                html! {
+                                                                    <div class="color-picker-dropdown">
+                                                                        {
+                                                                            props.available_colors.iter().map(|color| {
+                                                                                let color_str = color.clone();
+                                                                                let external_id = format!("external_{}", cal.id);
+                                                                                let on_color_change = props.on_color_change.clone();
+                                                                                
+                                                                                let on_color_select = Callback::from(move |_: MouseEvent| {
+                                                                                    on_color_change.emit((external_id.clone(), color_str.clone()));
+                                                                                });
+
+                                                                                let on_color_right_click = {
+                                                                                    let on_color_editor_open = props.on_color_editor_open.clone();
+                                                                                    let color_index = props.available_colors.iter().position(|c| c == color).unwrap_or(0);
+                                                                                    let color_str = color.clone();
+                                                                                    Callback::from(move |e: MouseEvent| {
+                                                                                        e.prevent_default();
+                                                                                        e.stop_propagation();
+                                                                                        on_color_editor_open.emit((color_index, color_str.clone()));
+                                                                                    })
+                                                                                };
+                                                                                
+                                                                                let is_selected = cal.color == *color;
+                                                                                
+                                                                                html! {
+                                                                                    <div
+                                                                                        key={color.clone()}
+                                                                                        class={if is_selected { "color-option selected" } else { "color-option" }}
+                                                                                        style={format!("background-color: {}", color)}
+                                                                                        onclick={on_color_select}
+                                                                                        oncontextmenu={on_color_right_click}
+                                                                                    />
+                                                                                }
+                                                                            }).collect::<Html>()
+                                                                        }
+                                                                    </div>
+                                                                }
+                                                            } else {
+                                                                html! {}
+                                                            }
+                                                        }
+                                                    </span>
+                                                    <span class="external-calendar-name">{&cal.name}</span>
+                                                    <div class="external-calendar-actions">
+                                                        {
+                                                            if let Some(last_fetched) = cal.last_fetched {
+                                                                let local_time = last_fetched.with_timezone(&chrono::Local);
+                                                                html! {
+                                                                    <span class="last-updated" title={format!("Last updated: {}", local_time.format("%Y-%m-%d %H:%M"))}>
+                                                                        {format!("{}", local_time.format("%H:%M"))}
+                                                                    </span>
+                                                                }
+                                                            } else {
+                                                                html! {
+                                                                    <span class="last-updated">{"Never"}</span>
+                                                                }
+                                                            }
+                                                        }
+                                                        <button 
+                                                            class="external-calendar-refresh-btn" 
+                                                            title="Refresh calendar"
+                                                            onclick={{
+                                                                let on_refresh = props.on_external_calendar_refresh.clone();
+                                                                let cal_id = cal.id;
+                                                                Callback::from(move |e: MouseEvent| {
+                                                                    e.stop_propagation();
+                                                                    on_refresh.emit(cal_id);
+                                                                })
+                                                            }}
+                                                            disabled={props.refreshing_calendar_id == Some(cal.id)}
+                                                        >
+                                                            {
+                                                                if props.refreshing_calendar_id == Some(cal.id) {
+                                                                    html! { <i class="fas fa-spinner fa-spin"></i> }
+                                                                } else {
+                                                                    html! { <i class="fas fa-sync-alt"></i> }
+                                                                }
+                                                            }
+                                                        </button>
+                                                    </div>
+                                                </div>
+                                                {
+                                                    if *external_context_menu_open == Some(cal.id) {
+                                                        html! {
+                                                            <>
+                                                                <div 
+                                                                    class="context-menu-overlay" 
+                                                                    onclick={close_external_context_menu.clone()}
+                                                                    style="position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; z-index: 999;"
+                                                                />
+                                                                <div class="context-menu" style="position: absolute; top: 0; right: 0; background: white; border: 1px solid #ccc; border-radius: 4px; box-shadow: 0 2px 8px rgba(0,0,0,0.15); z-index: 1000; min-width: 120px;">
+                                                                    <div 
+                                                                        class="context-menu-item" 
+                                                                        style="padding: 8px 12px; cursor: pointer; color: #d73a49;"
+                                                                        onclick={{
+                                                                            let on_delete = on_external_calendar_delete.clone();
+                                                                            let cal_id = cal.id;
+                                                                            Callback::from(move |_| {
+                                                                                on_delete.emit(cal_id);
+                                                                            })
+                                                                        }}
+                                                                    >
+                                                                        {"Delete Calendar"}
+                                                                    </div>
+                                                                </div>
+                                                            </>
+                                                        }
+                                                    } else {
+                                                        html! {}
+                                                    }
+                                                }
+                                            </li>
+                                        }
+                                    }).collect::<Html>()
+                                }
+                            </ul>
+                        }
+                    } else {
+                        html! {}
+                    }
+                }
+            </div>
+            
             <div class="sidebar-footer">
-                <button onclick={props.on_create_calendar.reform(|_| ())} class="create-calendar-button">
-                    {"+ Create Calendar"}
+                <button onclick={props.on_add_calendar.reform(|_| ())} class="add-calendar-button">
+                    {"+ Add Calendar"}
                 </button>
 
                 <div class="view-selector">
@@ -228,6 +442,10 @@ pub fn sidebar(props: &SidebarProps) -> Html {
                         <option value="dark" selected={matches!(props.current_theme, Theme::Dark)}>{"Dark"}</option>
                         <option value="rose" selected={matches!(props.current_theme, Theme::Rose)}>{"Rose"}</option>
                         <option value="mint" selected={matches!(props.current_theme, Theme::Mint)}>{"Mint"}</option>
+                        <option value="midnight" selected={matches!(props.current_theme, Theme::Midnight)}>{"Midnight"}</option>
+                        <option value="charcoal" selected={matches!(props.current_theme, Theme::Charcoal)}>{"Charcoal"}</option>
+                        <option value="nord" selected={matches!(props.current_theme, Theme::Nord)}>{"Nord"}</option>
+                        <option value="dracula" selected={matches!(props.current_theme, Theme::Dracula)}>{"Dracula"}</option>
                     </select>
                 </div>
 
@@ -235,6 +453,7 @@ pub fn sidebar(props: &SidebarProps) -> Html {
                     <select class="style-selector-dropdown" onchange={on_style_change}>
                         <option value="default" selected={matches!(props.current_style, Style::Default)}>{"Default"}</option>
                         <option value="google" selected={matches!(props.current_style, Style::Google)}>{"Google Calendar"}</option>
+                        <option value="apple" selected={matches!(props.current_style, Style::Apple)}>{"Apple Calendar"}</option>
                     </select>
                 </div>
 

frontend/src/components/week_view.rs

@@ -1,6 +1,6 @@
 use crate::components::{EventCreationData, RecurringEditAction, RecurringEditModal};
 use crate::models::ical::VEvent;
-use crate::services::calendar_service::UserInfo;
+use crate::services::calendar_service::{UserInfo, ExternalCalendar};
 use chrono::{Datelike, Duration, Local, NaiveDate, NaiveDateTime, NaiveTime, Timelike, Weekday};
 use std::collections::HashMap;
 use web_sys::MouseEvent;
@@ -17,6 +17,8 @@ pub struct WeekViewProps {
     #[prop_or_default]
     pub user_info: Option<UserInfo>,
     #[prop_or_default]
+    pub external_calendars: Vec<ExternalCalendar>,
+    #[prop_or_default]
     pub on_event_context_menu: Option<Callback<(web_sys::MouseEvent, VEvent)>>,
     #[prop_or_default]
     pub on_calendar_context_menu: Option<Callback<(web_sys::MouseEvent, NaiveDate)>>,
@@ -31,7 +33,7 @@ pub struct WeekViewProps {
             NaiveDateTime,
             NaiveDateTime,
             bool,
-            Option<chrono::DateTime<chrono::Utc>>,
+            Option<chrono::NaiveDateTime>,
             Option<String>,
             Option<String>,
         )>,
@@ -40,6 +42,12 @@ pub struct WeekViewProps {
     pub context_menus_open: bool,
     #[prop_or_default]
     pub time_increment: u32,
+    #[prop_or_default]
+    pub print_mode: bool,
+    #[prop_or_default]
+    pub print_pixels_per_hour: Option<f64>,
+    #[prop_or_default]
+    pub print_start_hour: Option<u32>,
 }
 
 #[derive(Clone, PartialEq)]
@@ -79,10 +87,47 @@ pub fn week_view(props: &WeekViewProps) -> Html {
 
     let pending_recurring_edit = use_state(|| None::<PendingRecurringEdit>);
 
+    // Current time state for time indicator
+    let current_time = use_state(|| Local::now());
+
+    // Update current time every 5 seconds
+    {
+        let current_time = current_time.clone();
+        use_effect_with((), move |_| {
+            let interval = gloo_timers::callback::Interval::new(5_000, move || {
+                current_time.set(Local::now());
+            });
+            
+            // Return the interval to keep it alive
+            move || drop(interval)
+        });
+    }
+
+    // Helper function to calculate current time indicator position
+    let calculate_current_time_position = |time_increment: u32| -> f64 {
+        let now = current_time.time();
+        let hour = now.hour() as f64;
+        let minute = now.minute() as f64;
+        let pixels_per_hour = if time_increment == 15 { 120.0 } else { 60.0 };
+        (hour + minute / 60.0) * pixels_per_hour
+    };
+
     // Helper function to get calendar color for an event
     let get_event_color = |event: &VEvent| -> String {
-        if let Some(user_info) = &props.user_info {
         if let Some(calendar_path) = &event.calendar_path {
+            // Check external calendars first (path format: "external_{id}")
+            if calendar_path.starts_with("external_") {
+                if let Ok(id_str) = calendar_path.strip_prefix("external_").unwrap_or("").parse::<i32>() {
+                    if let Some(external_calendar) = props.external_calendars
+                        .iter()
+                        .find(|cal| cal.id == id_str)
+                    {
+                        return external_calendar.color.clone();
+                    }
+                }
+            }
+            // Check regular calendars
+            else if let Some(user_info) = &props.user_info {
                 if let Some(calendar) = user_info
                     .calendars
                     .iter()
@@ -240,18 +285,14 @@ pub fn week_view(props: &WeekViewProps) -> Html {
 
                             // Calculate the day before this occurrence for UNTIL clause
                             let until_date =
-                                edit.event.dtstart.date_naive() - chrono::Duration::days(1);
+                                edit.event.dtstart.date() - chrono::Duration::days(1);
                             let until_datetime = until_date
                                 .and_time(chrono::NaiveTime::from_hms_opt(23, 59, 59).unwrap());
-                            let until_utc =
-                                chrono::DateTime::<chrono::Utc>::from_naive_utc_and_offset(
-                                    until_datetime,
-                                    chrono::Utc,
-                                );
+                            let until_naive = until_datetime; // Use local time directly
 
                             web_sys::console::log_1(&format!("🔄 Will set UNTIL {} for original series to end before occurrence {}", 
-                                until_utc.format("%Y-%m-%d %H:%M:%S UTC"),
-                                edit.event.dtstart.format("%Y-%m-%d %H:%M:%S UTC")).into());
+                                until_naive.format("%Y-%m-%d %H:%M:%S"),
+                                edit.event.dtstart.format("%Y-%m-%d %H:%M:%S")).into());
 
                             // Critical: Use the dragged times (new_start/new_end) not the original series times
                             // This ensures the new series reflects the user's drag operation
@@ -272,7 +313,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                 new_start,       // Dragged start time for new series
                                 new_end,         // Dragged end time for new series
                                 true,            // preserve_rrule = true
-                                Some(until_utc), // UNTIL date for original series
+                                Some(until_naive), // UNTIL date for original series
                                 Some("this_and_future".to_string()), // Update scope
                                 Some(occurrence_date), // Date of occurrence being modified
                             ));
@@ -307,6 +348,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
         })
     };
 
+
     html! {
         <div class="week-view-container">
             // Header with weekday names and dates
@@ -371,6 +413,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         <div 
                                                             class="all-day-event"
                                                             style={format!("background-color: {}", event_color)}
+                                                            data-external={event.categories.contains(&"__EXTERNAL_CALENDAR__".to_string()).to_string()}
                                                             {onclick}
                                                             {oncontextmenu}
                                                         >
@@ -398,13 +441,13 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                     // Time labels
                     <div class={classes!("time-labels", if props.time_increment == 15 { Some("quarter-mode") } else { None })}>
                         {
-                            time_labels.iter().map(|time| {
+                            time_labels.iter().enumerate().map(|(hour, time)| {
                                 let is_quarter_mode = props.time_increment == 15;
                                 html! {
                                     <div class={classes!(
                                         "time-label",
                                         if is_quarter_mode { Some("quarter-mode") } else { None }
-                                    )}>
+                                    )} data-hour={hour.to_string()}>
                                         {time}
                                     </div>
                                 }
@@ -571,10 +614,9 @@ pub fn week_view(props: &WeekViewProps) -> Html {
 
                                                         // Keep the original end time
                                                         let original_end = if let Some(end) = event.dtend {
-                                                            end.with_timezone(&chrono::Local).naive_local()
-                                                        } else {
+                                                            end                                                        } else {
                                                             // If no end time, use start time + 1 hour as default
-                                                            event.dtstart.with_timezone(&chrono::Local).naive_local() + chrono::Duration::hours(1)
+                                                            event.dtstart + chrono::Duration::hours(1)
                                                         };
 
                                                         let new_start_datetime = NaiveDateTime::new(current_drag.start_date, new_start_time);
@@ -605,8 +647,8 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         // Calculate new end time based on drag position
                                                         let new_end_time = pixels_to_time(current_drag.current_y, time_increment);
 
-                                                        // Keep the original start time
-                                                        let original_start = event.dtstart.with_timezone(&chrono::Local).naive_local();
+                                                        // Keep the original start time (already local)
+                                                        let original_start = event.dtstart;
 
                                                         let new_end_datetime = NaiveDateTime::new(current_drag.start_date, new_end_time);
 
@@ -661,10 +703,10 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                     >
                                         // Time slot backgrounds - 24 hour slots to represent full day
                                         {
-                                            (0..24).map(|_hour| {
+                                            (0..24).map(|hour| {
                                                 let slots_per_hour = 60 / props.time_increment;
                                                 html! {
-                                                    <div class={classes!("time-slot", if props.time_increment == 15 { Some("quarter-mode") } else { None })}>
+                                                    <div class={classes!("time-slot", if props.time_increment == 15 { Some("quarter-mode") } else { None })} data-hour={hour.to_string()}>
                                                         {
                                                             (0..slots_per_hour).map(|_slot| {
                                                                 let slot_class = if props.time_increment == 15 {
@@ -686,7 +728,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                         <div class="events-container">
                                             {
                                                 day_events.iter().enumerate().filter_map(|(event_idx, event)| {
-                                                    let (start_pixels, duration_pixels, is_all_day) = calculate_event_position(event, *date, props.time_increment);
+                                                    let (start_pixels, duration_pixels, is_all_day) = calculate_event_position(event, *date, props.time_increment, props.print_pixels_per_hour, props.print_start_hour);
 
                                                     // Skip all-day events (they're rendered in the header)
                                                     if is_all_day {
@@ -715,6 +757,8 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         let event_for_drag = event.clone();
                                                         let date_for_drag = *date;
                                                         let time_increment = props.time_increment;
+                                                        let print_pixels_per_hour = props.print_pixels_per_hour;
+                                                        let print_start_hour = props.print_start_hour;
                                                         Callback::from(move |e: MouseEvent| {
                                                             e.stop_propagation(); // Prevent drag-to-create from starting on event clicks
 
@@ -728,7 +772,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             let click_y_relative = if click_y_relative > 0.0 { click_y_relative } else { e.offset_y() as f64 };
 
                                                             // Get event's current position in day column coordinates
-                                                            let (event_start_pixels, _, _) = calculate_event_position(&event_for_drag, date_for_drag, time_increment);
+                                                            let (event_start_pixels, _, _) = calculate_event_position(&event_for_drag, date_for_drag, time_increment, print_pixels_per_hour, print_start_hour);
                                                             let event_start_pixels = event_start_pixels as f64;
 
                                                             // Convert click position to day column coordinates
@@ -779,9 +823,9 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                     let time_display = if event.all_day {
                                                         "All Day".to_string()
                                                     } else {
-                                                        let local_start = event.dtstart.with_timezone(&Local);
+                                                        let local_start = event.dtstart;
                                                         if let Some(end) = event.dtend {
-                                                            let local_end = end.with_timezone(&Local);
+                                                            let local_end = end;
 
                                                             // Check if both times are in same AM/PM period to avoid redundancy
                                                             let start_is_am = local_start.hour() < 12;
@@ -905,6 +949,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                         column_width
                                                                     )
                                                                 }
+                                                                data-external={event.categories.contains(&"__EXTERNAL_CALENDAR__".to_string()).to_string()}
                                                                 {onclick}
                                                                 {oncontextmenu}
                                                                 onmousedown={onmousedown_event}
@@ -923,7 +968,12 @@ pub fn week_view(props: &WeekViewProps) -> Html {
 
                                                                 // Event content
                                                                 <div class="event-content">
-                                                                    <div class="event-title">{event.summary.as_ref().unwrap_or(&"Untitled".to_string())}</div>
+                                                                    <div class="event-title-row">
+                                                                        <span class="event-title">{event.summary.as_ref().unwrap_or(&"Untitled".to_string())}</span>
+                                                                        if !event.alarms.is_empty() {
+                                                                            <i class="fas fa-bell event-reminder-icon" title="Has reminders"></i>
+                                                                        }
+                                                                    </div>
                                                                     {if !is_all_day && duration_pixels > 30.0 {
                                                                         html! { <div class="event-time">{time_display}</div> }
                                                                     } else {
@@ -992,6 +1042,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                 <div
                                                                     class="temp-event-box moving-event"
                                                                     style={format!("top: {}px; height: {}px; background-color: {}; opacity: 0.7;", preview_position, duration_pixels, event_color)}
+                                                                    data-external={event.categories.contains(&"__EXTERNAL_CALENDAR__".to_string()).to_string()}
                                                                 >
                                                                     <div class="event-title">{event.summary.as_ref().unwrap_or(&"Untitled".to_string())}</div>
                                                                     {if duration_pixels > 30.0 {
@@ -1006,14 +1057,13 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             // Show the event being resized from the start
                                                             let new_start_time = pixels_to_time(drag.current_y, props.time_increment);
                                                             let original_end = if let Some(end) = event.dtend {
-                                                                end.with_timezone(&chrono::Local).naive_local()
-                                                            } else {
-                                                                event.dtstart.with_timezone(&chrono::Local).naive_local() + chrono::Duration::hours(1)
+                                                                end                                                            } else {
+                                                                event.dtstart + chrono::Duration::hours(1)
                                                             };
 
                                                             // Calculate positions for the preview
-                                                            let (original_start_pixels, _, _) = calculate_event_position(event, drag.start_date, props.time_increment);
-                                                            let original_duration = original_end.signed_duration_since(event.dtstart.with_timezone(&chrono::Local).naive_local());
+                                                            let (original_start_pixels, _, _) = calculate_event_position(event, drag.start_date, props.time_increment, props.print_pixels_per_hour, props.print_start_hour);
+                                                            let original_duration = original_end.signed_duration_since(event.dtstart);
                                                             let original_end_pixels = original_start_pixels + (original_duration.num_minutes() as f32);
 
                                                             let new_start_pixels = drag.current_y;
@@ -1025,6 +1075,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                 <div
                                                                     class="temp-event-box resizing-event"
                                                                     style={format!("top: {}px; height: {}px; background-color: {}; opacity: 0.7;", new_start_pixels, new_height, event_color)}
+                                                                    data-external={event.categories.contains(&"__EXTERNAL_CALENDAR__".to_string()).to_string()}
                                                                 >
                                                                     <div class="event-title">{event.summary.as_ref().unwrap_or(&"Untitled".to_string())}</div>
                                                                     {if new_height > 30.0 {
@@ -1038,10 +1089,10 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         DragType::ResizeEventEnd(event) => {
                                                             // Show the event being resized from the end
                                                             let new_end_time = pixels_to_time(drag.current_y, props.time_increment);
-                                                            let original_start = event.dtstart.with_timezone(&chrono::Local).naive_local();
+                                                            let original_start = event.dtstart;
 
                                                             // Calculate positions for the preview
-                                                            let (original_start_pixels, _, _) = calculate_event_position(event, drag.start_date, props.time_increment);
+                                                            let (original_start_pixels, _, _) = calculate_event_position(event, drag.start_date, props.time_increment, props.print_pixels_per_hour, props.print_start_hour);
 
                                                             let new_end_pixels = drag.current_y;
                                                             let new_height = (new_end_pixels - original_start_pixels as f64).max(20.0);
@@ -1052,6 +1103,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                 <div
                                                                     class="temp-event-box resizing-event"
                                                                     style={format!("top: {}px; height: {}px; background-color: {}; opacity: 0.7;", original_start_pixels, new_height, event_color)}
+                                                                    data-external={event.categories.contains(&"__EXTERNAL_CALENDAR__".to_string()).to_string()}
                                                                 >
                                                                     <div class="event-title">{event.summary.as_ref().unwrap_or(&"Untitled".to_string())}</div>
                                                                     {if new_height > 30.0 {
@@ -1070,6 +1122,29 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                 html! {}
                                             }
                                         }
+
+                                        // Current time indicator - only show on today
+                                        {
+                                            if *date == props.today {
+                                                let current_time_position = calculate_current_time_position(props.time_increment);
+                                                let current_time_str = current_time.time().format("%I:%M %p").to_string();
+                                                
+                                                html! {
+                                                    <div class="current-time-indicator-container">
+                                                        <div 
+                                                            class="current-time-indicator"
+                                                            style={format!("top: {}px;", current_time_position)}
+                                                        >
+                                                            <div class="current-time-dot"></div>
+                                                            <div class="current-time-line"></div>
+                                                            <div class="current-time-label">{current_time_str}</div>
+                                                        </div>
+                                                    </div>
+                                                }
+                                            } else {
+                                                html! {}
+                                            }
+                                        }
                                     </div>
                                 }
                             }).collect::<Html>()
@@ -1151,18 +1226,15 @@ fn pixels_to_time(pixels: f64, time_increment: u32) -> NaiveTime {
     NaiveTime::from_hms_opt(hours, minutes, 0).unwrap_or(NaiveTime::from_hms_opt(0, 0, 0).unwrap())
 }
 
-fn calculate_event_position(event: &VEvent, date: NaiveDate, time_increment: u32) -> (f32, f32, bool) {
-    // Convert UTC times to local time for display
-    let local_start = event.dtstart.with_timezone(&Local);
-    let event_date = local_start.date_naive();
+fn calculate_event_position(event: &VEvent, date: NaiveDate, time_increment: u32, print_pixels_per_hour: Option<f64>, print_start_hour: Option<u32>) -> (f32, f32, bool) {
+    // Events are already in local time
+    let local_start = event.dtstart;
     
-    // Position events based on when they appear in local time, not their original date
-    // For timezone issues: an event created at 10 PM Sunday might be stored as Monday UTC
-    // but should still display on Sunday's column since that's when the user sees it
-    let should_display_here = event_date == date || 
-        (event_date == date - chrono::Duration::days(1) && local_start.hour() >= 20);
+    // Events should display based on their local date, since we now store proper UTC times
+    // Convert the UTC stored time back to local time to determine display date
+    let event_date = local_start.date();
     
-    if !should_display_here {
+    if event_date != date {
         return (0.0, 0.0, false); // Event not on this date
     }
 
@@ -1171,32 +1243,44 @@ fn calculate_event_position(event: &VEvent, date: NaiveDate, time_increment: u32
         return (0.0, 30.0, true); // Position at top, 30px height, is_all_day = true
     }
 
-    // Calculate start position in pixels from midnight
+    // Calculate start position in pixels
     let start_hour = local_start.hour() as f32;
     let start_minute = local_start.minute() as f32;
-    let pixels_per_hour = if time_increment == 15 { 120.0 } else { 60.0 };
-    let start_pixels = (start_hour + start_minute / 60.0) * pixels_per_hour;
+    let pixels_per_hour = if let Some(print_pph) = print_pixels_per_hour {
+        print_pph as f32 // Use the dynamic print mode calculation
+    } else {
+        if time_increment == 15 { 120.0 } else { 60.0 } // Default values
+    };
+    
+    // In print mode, offset by the start hour to show relative position within visible range
+    let hour_offset = if let Some(print_start) = print_start_hour {
+        print_start as f32
+    } else {
+        0.0 // No offset for normal view (starts at midnight)
+    };
+    
+    let start_pixels = ((start_hour + start_minute / 60.0) - hour_offset) * pixels_per_hour;
 
     // Calculate duration and height
     let duration_pixels = if let Some(end) = event.dtend {
-        let local_end = end.with_timezone(&Local);
-        let end_date = local_end.date_naive();
+        let local_end = end;
+        let end_date = local_end.date();
 
         // Handle events that span multiple days by capping at midnight
         if end_date > date {
-            // Event continues past midnight, cap at 24:00 
-            let max_pixels = 24.0 * pixels_per_hour;
-            max_pixels - start_pixels
+            // Event continues past midnight, cap at end of visible range
+            let max_hour = if let Some(_print_start) = print_start_hour { 24.0 } else { 24.0 };
+            let max_pixels = (max_hour - hour_offset) * pixels_per_hour;
+            (max_pixels - start_pixels).max(20.0)
         } else {
             let end_hour = local_end.hour() as f32;
             let end_minute = local_end.minute() as f32;
-            let end_pixels = (end_hour + end_minute / 60.0) * pixels_per_hour;
+            let end_pixels = ((end_hour + end_minute / 60.0) - hour_offset) * pixels_per_hour;
             (end_pixels - start_pixels).max(20.0) // Minimum 20px height
         }
     } else {
         pixels_per_hour // Default 1 hour if no end time
     };
-
     (start_pixels, duration_pixels, false) // is_all_day = false
 }
 
@@ -1207,16 +1291,16 @@ fn events_overlap(event1: &VEvent, event2: &VEvent) -> bool {
         return false;
     }
     
-    let start1 = event1.dtstart.with_timezone(&Local).naive_local();
+    let start1 = event1.dtstart;
     let end1 = if let Some(end) = event1.dtend {
-        end.with_timezone(&Local).naive_local()
+        end
     } else {
         start1 + chrono::Duration::hours(1) // Default 1 hour duration
     };
     
-    let start2 = event2.dtstart.with_timezone(&Local).naive_local();
+    let start2 = event2.dtstart;
     let end2 = if let Some(end) = event2.dtend {
-        end.with_timezone(&Local).naive_local()
+        end
     } else {
         start2 + chrono::Duration::hours(1) // Default 1 hour duration
     };
@@ -1237,9 +1321,9 @@ fn calculate_event_layout(events: &[VEvent], date: NaiveDate, time_increment: u3
                 return None;
             }
             
-            let (_, _, _) = calculate_event_position(event, date, time_increment);
-            let local_start = event.dtstart.with_timezone(&Local);
-            let event_date = local_start.date_naive();
+            let (_, _, _) = calculate_event_position(event, date, time_increment, None, None);
+            let local_start = event.dtstart;
+            let event_date = local_start.date();
             if event_date == date || 
                 (event_date == date - chrono::Duration::days(1) && local_start.hour() >= 20) {
                 Some((idx, event))
@@ -1250,7 +1334,7 @@ fn calculate_event_layout(events: &[VEvent], date: NaiveDate, time_increment: u3
         .collect();
     
     // Sort by start time
-    day_events.sort_by_key(|(_, event)| event.dtstart.with_timezone(&Local).naive_local());
+    day_events.sort_by_key(|(_, event)| event.dtstart);
     
     // For each event, find all events it overlaps with
     let mut event_columns = vec![(0, 1); events.len()]; // (column_idx, total_columns)
@@ -1275,7 +1359,7 @@ fn calculate_event_layout(events: &[VEvent], date: NaiveDate, time_increment: u3
         } else {
             // This event overlaps - we need to calculate column layout
             // Sort the overlapping group by start time
-            overlapping_events.sort_by_key(|&idx| day_events[idx].1.dtstart.with_timezone(&Local).naive_local());
+            overlapping_events.sort_by_key(|&idx| day_events[idx].1.dtstart);
             
             // Assign columns using a greedy algorithm
             let mut columns: Vec<Vec<usize>> = Vec::new();
@@ -1320,11 +1404,23 @@ fn calculate_event_layout(events: &[VEvent], date: NaiveDate, time_increment: u3
 
 // Check if an all-day event spans the given date
 fn event_spans_date(event: &VEvent, date: NaiveDate) -> bool {
-    let start_date = event.dtstart.with_timezone(&Local).date_naive();
+    let start_date = if event.all_day {
+        // For all-day events, extract date directly from UTC without timezone conversion
+        // since all-day events are stored at noon UTC to avoid timezone boundary issues
+        event.dtstart.date()
+    } else {
+        event.dtstart.date()
+    };
+    
     let end_date = if let Some(dtend) = event.dtend {
-        // For all-day events, dtend is often set to the day after the last day
-        // So we need to subtract a day to get the actual last day of the event
-        dtend.with_timezone(&Local).date_naive() - chrono::Duration::days(1)
+        if event.all_day {
+            // For all-day events, dtend is set to the day after the last day (RFC 5545)
+            // Extract date directly from UTC and subtract a day to get actual last day
+            dtend.date() - chrono::Duration::days(1)
+        } else {
+            // For timed events, use timezone conversion
+            dtend.date()
+        }
     } else {
         // Single day event
         start_date

frontend/src/services/alarm_scheduler.rs

@@ -0,0 +1,299 @@
+use calendar_models::{VAlarm, AlarmAction, AlarmTrigger, VEvent};
+use chrono::{Duration, Local, NaiveDateTime};
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use crate::services::{NotificationManager, AlarmNotification};
+use gloo_storage::{LocalStorage, Storage};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ScheduledAlarm {
+    pub id: String,                    // Unique alarm ID
+    pub event_uid: String,             // Event this alarm belongs to
+    pub event_summary: String,         // Event title for notification
+    pub event_location: Option<String>, // Event location for notification
+    pub event_start: NaiveDateTime,    // Event start time (local)
+    pub trigger_time: NaiveDateTime,   // When alarm should trigger (local)
+    pub alarm_action: AlarmAction,     // Type of alarm
+    pub status: AlarmStatus,           // Current status
+    pub created_at: NaiveDateTime,     // When alarm was scheduled
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub enum AlarmStatus {
+    Pending,    // Waiting to trigger
+    Triggered,  // Has been triggered
+    Dismissed,  // User dismissed
+    Expired,    // Past due (event ended)
+}
+
+#[derive(Debug, Clone)]
+pub struct AlarmScheduler {
+    scheduled_alarms: HashMap<String, ScheduledAlarm>,
+    notification_manager: NotificationManager,
+}
+
+const ALARMS_STORAGE_KEY: &str = "scheduled_alarms";
+
+impl AlarmScheduler {
+    pub fn new() -> Self {
+        let mut scheduler = Self {
+            scheduled_alarms: HashMap::new(),
+            notification_manager: NotificationManager::new(),
+        };
+        
+        // Load alarms from localStorage
+        scheduler.load_alarms_from_storage();
+        scheduler
+    }
+    
+    /// Load alarms from localStorage
+    fn load_alarms_from_storage(&mut self) {
+        if let Ok(alarms) = LocalStorage::get::<HashMap<String, ScheduledAlarm>>(ALARMS_STORAGE_KEY) {
+            self.scheduled_alarms = alarms;
+        }
+    }
+    
+    /// Save alarms to localStorage
+    fn save_alarms_to_storage(&self) {
+        if let Err(e) = LocalStorage::set(ALARMS_STORAGE_KEY, &self.scheduled_alarms) {
+            web_sys::console::error_1(
+                &format!("Failed to save alarms to localStorage: {:?}", e).into()
+            );
+        }
+    }
+
+    /// Schedule alarms for an event
+    pub fn schedule_event_alarms(&mut self, event: &VEvent) {
+        // Check notification permission before scheduling
+        let permission = NotificationManager::get_permission();
+        if permission != web_sys::NotificationPermission::Granted && !event.alarms.is_empty() {
+            // Try to force request permission asynchronously
+            wasm_bindgen_futures::spawn_local(async move {
+                let _ = NotificationManager::force_request_permission().await;
+            });
+        }
+        
+        // Remove any existing alarms for this event
+        self.remove_event_alarms(&event.uid);
+
+        // Get event details
+        let event_summary = event.summary.as_ref().unwrap_or(&"Untitled Event".to_string()).clone();
+        let event_location = event.location.clone();
+        let event_start = event.dtstart;
+
+        // Schedule each alarm
+        for alarm in &event.alarms {
+            if let Some(scheduled_alarm) = self.create_scheduled_alarm(
+                event,
+                alarm,
+                &event_summary,
+                &event_location,
+                event_start,
+            ) {
+                self.scheduled_alarms.insert(scheduled_alarm.id.clone(), scheduled_alarm);
+            }
+        }
+
+        // Save to localStorage
+        self.save_alarms_to_storage();
+    }
+
+    /// Create a scheduled alarm from a VAlarm
+    fn create_scheduled_alarm(
+        &self,
+        event: &VEvent,
+        valarm: &VAlarm,
+        event_summary: &str,
+        event_location: &Option<String>,
+        event_start: NaiveDateTime,
+    ) -> Option<ScheduledAlarm> {
+        // Only handle Display alarms for now
+        if valarm.action != AlarmAction::Display {
+            return None;
+        }
+
+        // Calculate trigger time
+        let trigger_time = match &valarm.trigger {
+            AlarmTrigger::Duration(duration) => {
+                // Duration relative to event start
+                let trigger_time = event_start + *duration;
+                
+                // Ensure trigger time is not in the past (with 30 second tolerance)
+                let now = Local::now().naive_local();
+                if trigger_time < now - Duration::seconds(30) {
+                    web_sys::console::warn_1(
+                        &format!("Skipping past alarm for event: {} (trigger: {})", 
+                            event_summary, 
+                            trigger_time.format("%Y-%m-%d %H:%M:%S")
+                        ).into()
+                    );
+                    return None;
+                }
+                
+                trigger_time
+            }
+            AlarmTrigger::DateTime(datetime) => {
+                // Absolute datetime - convert to local time
+                let local_trigger = datetime.with_timezone(&Local).naive_local();
+                
+                // Ensure trigger time is not in the past
+                let now = Local::now().naive_local();
+                if local_trigger < now - Duration::seconds(30) {
+                    web_sys::console::warn_1(
+                        &format!("Skipping past absolute alarm for event: {} (trigger: {})", 
+                            event_summary, 
+                            local_trigger.format("%Y-%m-%d %H:%M:%S")
+                        ).into()
+                    );
+                    return None;
+                }
+                
+                local_trigger
+            }
+        };
+
+        // Generate unique alarm ID
+        let alarm_id = format!("{}_{}", event.uid, trigger_time.and_utc().timestamp());
+
+        Some(ScheduledAlarm {
+            id: alarm_id,
+            event_uid: event.uid.clone(),
+            event_summary: event_summary.to_string(),
+            event_location: event_location.clone(),
+            event_start,
+            trigger_time,
+            alarm_action: valarm.action.clone(),
+            status: AlarmStatus::Pending,
+            created_at: Local::now().naive_local(),
+        })
+    }
+
+    /// Remove all alarms for an event
+    pub fn remove_event_alarms(&mut self, event_uid: &str) {
+        let alarm_ids: Vec<String> = self.scheduled_alarms
+            .iter()
+            .filter(|(_, alarm)| alarm.event_uid == event_uid)
+            .map(|(id, _)| id.clone())
+            .collect();
+
+        for alarm_id in alarm_ids {
+            self.scheduled_alarms.remove(&alarm_id);
+        }
+
+        // Also close any active notifications for this event
+        self.notification_manager.close_notification(event_uid);
+        
+        // Save to localStorage
+        self.save_alarms_to_storage();
+    }
+
+    /// Check for alarms that should trigger now and trigger them
+    pub fn check_and_trigger_alarms(&mut self) -> usize {
+        // Reload alarms from localStorage to ensure we have the latest data
+        self.load_alarms_from_storage();
+        
+        let now = Local::now().naive_local();
+        let mut triggered_count = 0;
+
+        // Find alarms that should trigger (within 30 seconds tolerance)
+        let alarms_to_trigger: Vec<ScheduledAlarm> = self.scheduled_alarms
+            .values()
+            .filter(|alarm| {
+                alarm.status == AlarmStatus::Pending && 
+                alarm.trigger_time <= now + Duration::seconds(30) &&
+                alarm.trigger_time >= now - Duration::seconds(30)
+            })
+            .cloned()
+            .collect();
+
+        for alarm in alarms_to_trigger {
+            if self.trigger_alarm(&alarm) {
+                // Mark alarm as triggered
+                if let Some(scheduled_alarm) = self.scheduled_alarms.get_mut(&alarm.id) {
+                    scheduled_alarm.status = AlarmStatus::Triggered;
+                }
+                triggered_count += 1;
+            }
+        }
+
+        // Clean up expired alarms (events that ended more than 1 hour ago)
+        self.cleanup_expired_alarms();
+        
+        // Save to localStorage if any changes were made
+        if triggered_count > 0 {
+            self.save_alarms_to_storage();
+        }
+
+        triggered_count
+    }
+
+    /// Trigger a specific alarm
+    fn trigger_alarm(&mut self, alarm: &ScheduledAlarm) -> bool {
+        // Don't trigger if already showing notification for this event
+        if self.notification_manager.has_notification(&alarm.event_uid) {
+            return false;
+        }
+
+        let alarm_notification = AlarmNotification {
+            event_uid: alarm.event_uid.clone(),
+            event_summary: alarm.event_summary.clone(),
+            event_location: alarm.event_location.clone(),
+            alarm_time: alarm.event_start,
+        };
+
+        match self.notification_manager.show_alarm_notification(alarm_notification) {
+            Ok(()) => true,
+            Err(err) => {
+                web_sys::console::error_1(
+                    &format!("Failed to trigger alarm: {:?}", err).into()
+                );
+                false
+            }
+        }
+    }
+
+    /// Clean up expired alarms
+    fn cleanup_expired_alarms(&mut self) {
+        let now = Local::now().naive_local();
+        let cutoff_time = now - Duration::hours(1);
+
+        let expired_alarm_ids: Vec<String> = self.scheduled_alarms
+            .iter()
+            .filter(|(_, alarm)| {
+                // Mark as expired if event ended more than 1 hour ago
+                alarm.event_start < cutoff_time
+            })
+            .map(|(id, _)| id.clone())
+            .collect();
+
+        for alarm_id in &expired_alarm_ids {
+            if let Some(alarm) = self.scheduled_alarms.get_mut(alarm_id) {
+                alarm.status = AlarmStatus::Expired;
+            }
+        }
+
+        // Remove expired alarms from memory
+        let had_expired = !expired_alarm_ids.is_empty();
+        for alarm_id in expired_alarm_ids {
+            self.scheduled_alarms.remove(&alarm_id);
+        }
+        
+        // Save to localStorage if any expired alarms were removed
+        if had_expired {
+            self.save_alarms_to_storage();
+        }
+    }
+
+
+    /// Request notification permission
+    pub async fn request_notification_permission(&self) -> Result<web_sys::NotificationPermission, wasm_bindgen::JsValue> {
+        NotificationManager::request_permission().await
+    }
+
+}
+
+impl Default for AlarmScheduler {
+    fn default() -> Self {
+        Self::new()
+    }
+}

frontend/src/services/calendar_service.rs

@@ -1,12 +1,13 @@
-use chrono::{DateTime, Datelike, Duration, NaiveDate, TimeZone, Utc, Weekday};
+use chrono::{DateTime, Datelike, Duration, NaiveDate, Utc, Weekday};
+use gloo_storage::{LocalStorage, Storage};
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use wasm_bindgen::JsCast;
 use wasm_bindgen_futures::JsFuture;
 use web_sys::{Request, RequestInit, RequestMode, Response};
 
-// Import RFC 5545 compliant VEvent from shared library
-use calendar_models::VEvent;
+// Import RFC 5545 compliant VEvent and VAlarm from shared library
+use calendar_models::{VEvent, VAlarm};
 
 // Create type alias for backward compatibility
 pub type CalendarEvent = VEvent;
@@ -36,6 +37,12 @@ pub struct UserInfo {
     pub username: String,
     pub server_url: String,
     pub calendars: Vec<CalendarInfo>,
+    #[serde(default = "default_timestamp")]
+    pub last_updated: u64,
+}
+
+fn default_timestamp() -> u64 {
+    0
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
@@ -43,6 +50,7 @@ pub struct CalendarInfo {
     pub path: String,
     pub display_name: String,
     pub color: String,
+    pub is_visible: bool,
 }
 
 // CalendarEvent, EventStatus, and EventClass are now imported from shared library
@@ -239,6 +247,8 @@ impl CalendarService {
         if resp.ok() {
             let events: Vec<CalendarEvent> = serde_json::from_str(&text_string)
                 .map_err(|e| format!("JSON parsing failed: {}", e))?;
+            
+            
             Ok(events)
         } else {
             Err(format!(
@@ -267,47 +277,69 @@ impl CalendarService {
         grouped
     }
 
+    /// Convert UTC events to local timezone for display
+    fn convert_utc_to_local(mut event: VEvent) -> VEvent {
+        // All-day events should not have timezone conversions applied
+        if event.all_day {
+            return event;
+        }
+        
+        // Check if event times are in UTC (legacy events from before timezone migration)
+        let is_utc_event = event.dtstart_tzid.as_ref().map_or(true, |tz| tz == "UTC");
+        
+        if is_utc_event {
+            
+            // Get current timezone offset (convert from UTC to local)
+            let date = js_sys::Date::new_0();
+            let timezone_offset_minutes = date.get_timezone_offset() as i32;
+            
+            // Convert start time from UTC to local
+            // getTimezoneOffset() returns minutes UTC is ahead of local time
+            // To convert UTC to local, we subtract the offset (add negative offset)
+            let local_start = event.dtstart + chrono::Duration::minutes(-timezone_offset_minutes as i64);
+            event.dtstart = local_start;
+            event.dtstart_tzid = None; // Clear UTC timezone indicator
+            
+            // Convert end time if present
+            if let Some(end_utc) = event.dtend {
+                let local_end = end_utc + chrono::Duration::minutes(-timezone_offset_minutes as i64);
+                event.dtend = Some(local_end);
+                event.dtend_tzid = None; // Clear UTC timezone indicator
+            }
+            
+            // Convert created/modified times if present
+            if let Some(created_utc) = event.created {
+                event.created = Some(created_utc + chrono::Duration::minutes(-timezone_offset_minutes as i64));
+                event.created_tzid = None;
+            }
+            
+            if let Some(modified_utc) = event.last_modified {
+                event.last_modified = Some(modified_utc + chrono::Duration::minutes(-timezone_offset_minutes as i64));
+                event.last_modified_tzid = None;
+            }
+            
+            // Convert EXDATE entries from UTC to local time
+            event.exdate = event.exdate.into_iter()
+                .map(|exdate| exdate + chrono::Duration::minutes(-timezone_offset_minutes as i64))
+                .collect();
+        }
+        
+        event
+    }
+
     /// Expand recurring events using VEvent (RFC 5545 compliant)
     pub fn expand_recurring_events(events: Vec<VEvent>) -> Vec<VEvent> {
         let mut expanded_events = Vec::new();
-        let today = chrono::Utc::now().date_naive();
+        let today = chrono::Local::now().date_naive();
         let start_range = today - Duration::days(36500); // Show past 100 years (to catch any historical yearly events)
         let end_range = today + Duration::days(36500); // Show next 100 years
 
         for event in events {
+            // Convert UTC events to local time for proper display
+            let event = Self::convert_utc_to_local(event);
             if let Some(ref rrule) = event.rrule {
-                web_sys::console::log_1(
-                    &format!(
-                        "📅 Processing recurring VEvent '{}' with RRULE: {}",
-                        event.summary.as_deref().unwrap_or("Untitled"),
-                        rrule
-                    )
-                    .into(),
-                );
-
-                // Log if event has exception dates
-                if !event.exdate.is_empty() {
-                    web_sys::console::log_1(
-                        &format!(
-                            "📅 VEvent '{}' has {} exception dates: {:?}",
-                            event.summary.as_deref().unwrap_or("Untitled"),
-                            event.exdate.len(),
-                            event.exdate
-                        )
-                        .into(),
-                    );
-                }
-
                 // Generate occurrences for recurring events using VEvent
                 let occurrences = Self::generate_occurrences(&event, rrule, start_range, end_range);
-                web_sys::console::log_1(
-                    &format!(
-                        "📅 Generated {} occurrences for VEvent '{}'",
-                        occurrences.len(),
-                        event.summary.as_deref().unwrap_or("Untitled")
-                    )
-                    .into(),
-                );
                 expanded_events.extend(occurrences);
             } else {
                 // Non-recurring event - add as-is
@@ -329,7 +361,6 @@ impl CalendarService {
 
         // Parse RRULE components
         let rrule_upper = rrule.to_uppercase();
-        web_sys::console::log_1(&format!("🔄 Parsing RRULE: {}", rrule_upper).into());
 
         let components: HashMap<String, String> = rrule_upper
             .split(';')
@@ -364,17 +395,18 @@ impl CalendarService {
 
         // Get UNTIL date if specified
         let until_date = components.get("UNTIL").and_then(|until_str| {
-            // Parse UNTIL date in YYYYMMDDTHHMMSSZ format
+            // Parse UNTIL date in YYYYMMDDTHHMMSSZ format (treat as local time)
             if let Ok(dt) = chrono::NaiveDateTime::parse_from_str(
                 until_str.trim_end_matches('Z'),
                 "%Y%m%dT%H%M%S",
             ) {
-                Some(chrono::Utc.from_utc_datetime(&dt))
+                Some(dt)
             } else if let Ok(dt) = chrono::DateTime::parse_from_str(until_str, "%Y%m%dT%H%M%SZ") {
-                Some(dt.with_timezone(&chrono::Utc))
+                // Convert UTC to local (naive) time for consistency
+                Some(dt.naive_utc())
             } else if let Ok(date) = chrono::NaiveDate::parse_from_str(until_str, "%Y%m%d") {
                 // Handle date-only UNTIL
-                Some(chrono::Utc.from_utc_datetime(&date.and_hms_opt(23, 59, 59).unwrap()))
+                Some(date.and_hms_opt(23, 59, 59).unwrap())
             } else {
                 web_sys::console::log_1(
                     &format!("⚠️ Failed to parse UNTIL date: {}", until_str).into(),
@@ -383,11 +415,10 @@ impl CalendarService {
             }
         });
 
-        if let Some(until) = until_date {
-            web_sys::console::log_1(&format!("📅 RRULE has UNTIL: {}", until).into());
+        if let Some(_until) = until_date {
         }
 
-        let start_date = base_event.dtstart.date_naive();
+        let start_date = base_event.dtstart.date();
         let mut current_date = start_date;
         let mut occurrence_count = 0;
 
@@ -398,10 +429,6 @@ impl CalendarService {
                 let current_datetime = base_event.dtstart
                     + Duration::days(current_date.signed_duration_since(start_date).num_days());
                 if current_datetime > until {
-                    web_sys::console::log_1(
-                        &format!("🛑 Stopping at {} due to UNTIL {}", current_datetime, until)
-                            .into(),
-                    );
                     break;
                 }
             }
@@ -413,25 +440,14 @@ impl CalendarService {
 
                 // Check if this occurrence is in the exception dates (EXDATE)
                 let is_exception = base_event.exdate.iter().any(|exception_date| {
-                    // Compare dates ignoring sub-second precision
-                    let exception_naive = exception_date.naive_utc();
-                    let occurrence_naive = occurrence_datetime.naive_utc();
+                    // EXDATE from server is in local time, but stored as NaiveDateTime
+                    // We need to compare both as local time (naive datetimes) instead of UTC
+                    let exception_naive = *exception_date;
+                    let occurrence_naive = occurrence_datetime;
 
                     // Check if dates match (within a minute to handle minor time differences)
                     let diff = occurrence_naive - exception_naive;
-                    let matches = diff.num_seconds().abs() < 60;
-
-                    if matches {
-                        web_sys::console::log_1(
-                            &format!(
-                                "🚫 Excluding occurrence {} due to EXDATE {}",
-                                occurrence_naive, exception_naive
-                            )
-                            .into(),
-                        );
-                    }
-
-                    matches
+                    diff.num_seconds().abs() < 60
                 });
 
                 if !is_exception {
@@ -547,7 +563,7 @@ impl CalendarService {
         interval: i32,
         start_range: NaiveDate,
         end_range: NaiveDate,
-        until_date: Option<chrono::DateTime<chrono::Utc>>,
+        until_date: Option<chrono::NaiveDateTime>,
         count: usize,
     ) -> Vec<VEvent> {
         let mut occurrences = Vec::new();
@@ -557,7 +573,7 @@ impl CalendarService {
             return occurrences;
         }
 
-        let start_date = base_event.dtstart.date_naive();
+        let start_date = base_event.dtstart.date();
 
         // Find the Monday of the week containing the start_date (reference week)
         let reference_week_start =
@@ -598,13 +614,6 @@ impl CalendarService {
                     let days_diff = occurrence_date.signed_duration_since(start_date).num_days();
                     let occurrence_datetime = base_event.dtstart + Duration::days(days_diff);
                     if occurrence_datetime > until {
-                        web_sys::console::log_1(
-                            &format!(
-                                "🛑 Stopping at {} due to UNTIL {}",
-                                occurrence_datetime, until
-                            )
-                            .into(),
-                        );
                         return occurrences;
                     }
                 }
@@ -615,22 +624,11 @@ impl CalendarService {
 
                 // Check if this occurrence is in the exception dates (EXDATE)
                 let is_exception = base_event.exdate.iter().any(|exception_date| {
-                    let exception_naive = exception_date.naive_utc();
-                    let occurrence_naive = occurrence_datetime.naive_utc();
+                    // Compare as local time (naive datetimes) instead of UTC
+                    let exception_naive = *exception_date;
+                    let occurrence_naive = occurrence_datetime;
                     let diff = occurrence_naive - exception_naive;
-                    let matches = diff.num_seconds().abs() < 60;
-
-                    if matches {
-                        web_sys::console::log_1(
-                            &format!(
-                                "🚫 Excluding occurrence {} due to EXDATE {}",
-                                occurrence_naive, exception_naive
-                            )
-                            .into(),
-                        );
-                    }
-
-                    matches
+                    diff.num_seconds().abs() < 60
                 });
 
                 if !is_exception {
@@ -667,7 +665,7 @@ impl CalendarService {
         interval: i32,
         start_range: NaiveDate,
         end_range: NaiveDate,
-        until_date: Option<chrono::DateTime<chrono::Utc>>,
+        until_date: Option<chrono::NaiveDateTime>,
         count: usize,
     ) -> Vec<VEvent> {
         let mut occurrences = Vec::new();
@@ -683,7 +681,7 @@ impl CalendarService {
             return occurrences;
         }
 
-        let start_date = base_event.dtstart.date_naive();
+        let start_date = base_event.dtstart.date();
         let mut current_month_start =
             NaiveDate::from_ymd_opt(start_date.year(), start_date.month(), 1).unwrap();
         let mut total_occurrences = 0;
@@ -724,13 +722,6 @@ impl CalendarService {
                             occurrence_date.signed_duration_since(start_date).num_days();
                         let occurrence_datetime = base_event.dtstart + Duration::days(days_diff);
                         if occurrence_datetime > until {
-                            web_sys::console::log_1(
-                                &format!(
-                                    "🛑 Stopping at {} due to UNTIL {}",
-                                    occurrence_datetime, until
-                                )
-                                .into(),
-                            );
                             return occurrences;
                         }
                     }
@@ -741,9 +732,7 @@ impl CalendarService {
 
                     // Check if this occurrence is in the exception dates (EXDATE)
                     let is_exception = base_event.exdate.iter().any(|exception_date| {
-                        let exception_naive = exception_date.naive_utc();
-                        let occurrence_naive = occurrence_datetime.naive_utc();
-                        let diff = occurrence_naive - exception_naive;
+                        let diff = occurrence_datetime - *exception_date;
                         diff.num_seconds().abs() < 60
                     });
 
@@ -784,14 +773,14 @@ impl CalendarService {
         interval: i32,
         start_range: NaiveDate,
         end_range: NaiveDate,
-        until_date: Option<chrono::DateTime<chrono::Utc>>,
+        until_date: Option<chrono::NaiveDateTime>,
         count: usize,
     ) -> Vec<VEvent> {
         let mut occurrences = Vec::new();
 
         // Parse BYDAY for monthly (e.g., "1MO" = first Monday, "-1FR" = last Friday)
         if let Some((position, weekday)) = Self::parse_monthly_byday(byday) {
-            let start_date = base_event.dtstart.date_naive();
+            let start_date = base_event.dtstart.date();
             let mut current_month_start =
                 NaiveDate::from_ymd_opt(start_date.year(), start_date.month(), 1).unwrap();
             let mut total_occurrences = 0;
@@ -822,9 +811,7 @@ impl CalendarService {
 
                         // Check EXDATE
                         let is_exception = base_event.exdate.iter().any(|exception_date| {
-                            let exception_naive = exception_date.naive_utc();
-                            let occurrence_naive = occurrence_datetime.naive_utc();
-                            let diff = occurrence_naive - exception_naive;
+                            let diff = occurrence_datetime - *exception_date;
                             diff.num_seconds().abs() < 60
                         });
 
@@ -863,7 +850,7 @@ impl CalendarService {
         interval: i32,
         start_range: NaiveDate,
         end_range: NaiveDate,
-        until_date: Option<chrono::DateTime<chrono::Utc>>,
+        until_date: Option<chrono::NaiveDateTime>,
         count: usize,
     ) -> Vec<VEvent> {
         let mut occurrences = Vec::new();
@@ -879,7 +866,7 @@ impl CalendarService {
             return occurrences;
         }
 
-        let start_date = base_event.dtstart.date_naive();
+        let start_date = base_event.dtstart.date();
         let mut current_year = start_date.year();
         let mut total_occurrences = 0;
 
@@ -922,9 +909,7 @@ impl CalendarService {
 
                     // Check EXDATE
                     let is_exception = base_event.exdate.iter().any(|exception_date| {
-                        let exception_naive = exception_date.naive_utc();
-                        let occurrence_naive = occurrence_datetime.naive_utc();
-                        let diff = occurrence_naive - exception_naive;
+                        let diff = occurrence_datetime - *exception_date;
                         diff.num_seconds().abs() < 60
                     });
 
@@ -1246,12 +1231,14 @@ impl CalendarService {
         organizer: String,
         attendees: String,
         categories: String,
-        reminder: String,
+        alarms: Vec<VAlarm>,
         recurrence: String,
         recurrence_days: Vec<bool>,
+        recurrence_interval: u32,
         recurrence_count: Option<u32>,
         recurrence_until: Option<String>,
         calendar_path: Option<String>,
+        timezone: String,
     ) -> Result<(), String> {
         let window = web_sys::window().ok_or("No global window exists")?;
 
@@ -1279,13 +1266,14 @@ impl CalendarService {
                 "organizer": organizer,
                 "attendees": attendees,
                 "categories": categories,
-                "reminder": reminder,
+                "alarms": alarms,
                 "recurrence": recurrence,
                 "recurrence_days": recurrence_days,
-                "recurrence_interval": 1_u32, // Default interval
+                "recurrence_interval": recurrence_interval,
                 "recurrence_end_date": recurrence_until,
                 "recurrence_count": recurrence_count,
-                "calendar_path": calendar_path
+                "calendar_path": calendar_path,
+                "timezone": timezone
             });
             let url = format!("{}/calendar/events/series/create", self.base_url);
             (body, url)
@@ -1306,10 +1294,11 @@ impl CalendarService {
                 "organizer": organizer,
                 "attendees": attendees,
                 "categories": categories,
-                "reminder": reminder,
+                "alarms": alarms,
                 "recurrence": recurrence,
                 "recurrence_days": recurrence_days,
-                "calendar_path": calendar_path
+                "calendar_path": calendar_path,
+                "timezone": timezone
             });
             let url = format!("{}/calendar/events/create", self.base_url);
             (body, url)
@@ -1383,13 +1372,14 @@ impl CalendarService {
         organizer: String,
         attendees: String,
         categories: String,
-        reminder: String,
+        alarms: Vec<VAlarm>,
         recurrence: String,
         recurrence_days: Vec<bool>,
+        recurrence_interval: u32,
+        recurrence_count: Option<u32>,
+        recurrence_until: Option<String>,
         calendar_path: Option<String>,
-        exception_dates: Vec<DateTime<Utc>>,
-        update_action: Option<String>,
-        until_date: Option<DateTime<Utc>>,
+        timezone: String,
     ) -> Result<(), String> {
         // Forward to update_event_with_scope with default scope
         self.update_event_with_scope(
@@ -1410,13 +1400,14 @@ impl CalendarService {
             organizer,
             attendees,
             categories,
-            reminder,
+            alarms,
             recurrence,
             recurrence_days,
+            recurrence_interval,
+            recurrence_count,
+            recurrence_until,
             calendar_path,
-            exception_dates,
-            update_action,
-            until_date,
+            timezone,
         )
         .await
     }
@@ -1440,13 +1431,14 @@ impl CalendarService {
         organizer: String,
         attendees: String,
         categories: String,
-        reminder: String,
+        alarms: Vec<VAlarm>,
         recurrence: String,
         recurrence_days: Vec<bool>,
+        recurrence_interval: u32,
+        recurrence_count: Option<u32>,
+        recurrence_until: Option<String>,
         calendar_path: Option<String>,
-        exception_dates: Vec<DateTime<Utc>>,
-        update_action: Option<String>,
-        until_date: Option<DateTime<Utc>>,
+        timezone: String,
     ) -> Result<(), String> {
         let window = web_sys::window().ok_or("No global window exists")?;
 
@@ -1471,14 +1463,14 @@ impl CalendarService {
             "organizer": organizer,
             "attendees": attendees,
             "categories": categories,
-            "reminder": reminder,
+            "alarms": alarms,
             "recurrence": recurrence,
             "recurrence_days": recurrence_days,
+            "recurrence_interval": recurrence_interval,
+            "recurrence_count": recurrence_count,
+            "recurrence_end_date": recurrence_until,
             "calendar_path": calendar_path,
-            "update_action": update_action,
-            "occurrence_date": null,
-            "exception_dates": exception_dates.iter().map(|dt| dt.to_rfc3339()).collect::<Vec<String>>(),
-            "until_date": until_date.as_ref().map(|dt| dt.to_rfc3339())
+            "timezone": timezone
         });
         let url = format!("{}/calendar/events/update", self.base_url);
 
@@ -1676,11 +1668,16 @@ impl CalendarService {
         organizer: String,
         attendees: String,
         categories: String,
-        reminder: String,
+        alarms: Vec<VAlarm>,
         recurrence: String,
+        recurrence_days: Vec<bool>,
+        recurrence_interval: u32,
+        recurrence_count: Option<u32>,
+        recurrence_until: Option<String>,
         calendar_path: Option<String>,
         update_scope: String,
         occurrence_date: Option<String>,
+        timezone: String,
     ) -> Result<(), String> {
         let window = web_sys::window().ok_or("No global window exists")?;
 
@@ -1704,15 +1701,16 @@ impl CalendarService {
             "organizer": organizer,
             "attendees": attendees,
             "categories": categories,
-            "reminder": reminder,
+            "alarms": alarms,
             "recurrence": recurrence,
-            "recurrence_days": vec![false; 7], // Default - could be enhanced
-            "recurrence_interval": 1_u32, // Default interval
-            "recurrence_end_date": None as Option<String>, // No end date by default
-            "recurrence_count": None as Option<u32>, // No count limit by default
+            "recurrence_days": recurrence_days,
+            "recurrence_interval": recurrence_interval,
+            "recurrence_end_date": recurrence_until,
+            "recurrence_count": recurrence_count,
             "calendar_path": calendar_path,
             "update_scope": update_scope,
-            "occurrence_date": occurrence_date
+            "occurrence_date": occurrence_date,
+            "timezone": timezone
         });
 
         let url = format!("{}/calendar/events/series/update", self.base_url);
@@ -1851,4 +1849,256 @@ impl CalendarService {
 
         None
     }
+
+    // ==================== EXTERNAL CALENDAR METHODS ====================
+
+    pub async fn get_external_calendars() -> Result<Vec<ExternalCalendar>, String> {
+        let token = LocalStorage::get::<String>("auth_token")
+            .map_err(|_| "No authentication token found".to_string())?;
+
+        let window = web_sys::window().ok_or("No global window exists")?;
+
+        let opts = RequestInit::new();
+        opts.set_method("GET");
+        opts.set_mode(RequestMode::Cors);
+
+        let service = Self::new();
+        let url = format!("{}/external-calendars", service.base_url);
+        let request = Request::new_with_str_and_init(&url, &opts)
+            .map_err(|e| format!("Request creation failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Authorization", &format!("Bearer {}", token))
+            .map_err(|e| format!("Authorization header setting failed: {:?}", e))?;
+
+        let resp_value = JsFuture::from(window.fetch_with_request(&request))
+            .await
+            .map_err(|e| format!("Request failed: {:?}", e))?;
+
+        let resp: Response = resp_value
+            .dyn_into()
+            .map_err(|e| format!("Response casting failed: {:?}", e))?;
+
+        if !resp.ok() {
+            return Err(format!("HTTP error: {}", resp.status()));
+        }
+
+        let json = JsFuture::from(resp.json().unwrap())
+            .await
+            .map_err(|e| format!("JSON parsing failed: {:?}", e))?;
+
+        let external_calendars: Vec<ExternalCalendar> = serde_wasm_bindgen::from_value(json)
+            .map_err(|e| format!("Deserialization failed: {:?}", e))?;
+
+        Ok(external_calendars)
+    }
+
+    pub async fn create_external_calendar(name: &str, url: &str, color: &str) -> Result<ExternalCalendar, String> {
+        let token = LocalStorage::get::<String>("auth_token")
+            .map_err(|_| "No authentication token found".to_string())?;
+
+        let window = web_sys::window().ok_or("No global window exists")?;
+
+        let opts = RequestInit::new();
+        opts.set_method("POST");
+        opts.set_mode(RequestMode::Cors);
+
+        let body = serde_json::json!({
+            "name": name,
+            "url": url,
+            "color": color
+        });
+
+        let service = Self::new();
+        let body_string = serde_json::to_string(&body)
+            .map_err(|e| format!("JSON serialization failed: {}", e))?;
+        opts.set_body(&body_string.into());
+
+        let url = format!("{}/external-calendars", service.base_url);
+        let request = Request::new_with_str_and_init(&url, &opts)
+            .map_err(|e| format!("Request creation failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Authorization", &format!("Bearer {}", token))
+            .map_err(|e| format!("Authorization header setting failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Content-Type", "application/json")
+            .map_err(|e| format!("Content-Type header setting failed: {:?}", e))?;
+
+        let resp_value = JsFuture::from(window.fetch_with_request(&request))
+            .await
+            .map_err(|e| format!("Request failed: {:?}", e))?;
+
+        let resp: Response = resp_value
+            .dyn_into()
+            .map_err(|e| format!("Response casting failed: {:?}", e))?;
+
+        if !resp.ok() {
+            return Err(format!("HTTP error: {}", resp.status()));
+        }
+
+        let json = JsFuture::from(resp.json().unwrap())
+            .await
+            .map_err(|e| format!("JSON parsing failed: {:?}", e))?;
+
+        let external_calendar: ExternalCalendar = serde_wasm_bindgen::from_value(json)
+            .map_err(|e| format!("Deserialization failed: {:?}", e))?;
+
+        Ok(external_calendar)
+    }
+
+    pub async fn update_external_calendar(
+        id: i32,
+        name: &str,
+        url: &str,
+        color: &str,
+        is_visible: bool,
+    ) -> Result<(), String> {
+        let token = LocalStorage::get::<String>("auth_token")
+            .map_err(|_| "No authentication token found".to_string())?;
+
+        let window = web_sys::window().ok_or("No global window exists")?;
+
+        let opts = RequestInit::new();
+        opts.set_method("POST");
+        opts.set_mode(RequestMode::Cors);
+
+        let body = serde_json::json!({
+            "name": name,
+            "url": url,
+            "color": color,
+            "is_visible": is_visible
+        });
+
+        let service = Self::new();
+        let body_string = serde_json::to_string(&body)
+            .map_err(|e| format!("JSON serialization failed: {}", e))?;
+        opts.set_body(&body_string.into());
+
+        let url = format!("{}/external-calendars/{}", service.base_url, id);
+        let request = Request::new_with_str_and_init(&url, &opts)
+            .map_err(|e| format!("Request creation failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Authorization", &format!("Bearer {}", token))
+            .map_err(|e| format!("Authorization header setting failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Content-Type", "application/json")
+            .map_err(|e| format!("Content-Type header setting failed: {:?}", e))?;
+
+        let resp_value = JsFuture::from(window.fetch_with_request(&request))
+            .await
+            .map_err(|e| format!("Request failed: {:?}", e))?;
+
+        let resp: Response = resp_value
+            .dyn_into()
+            .map_err(|e| format!("Response casting failed: {:?}", e))?;
+
+        if !resp.ok() {
+            return Err(format!("HTTP error: {}", resp.status()));
+        }
+
+        Ok(())
+    }
+
+    pub async fn delete_external_calendar(id: i32) -> Result<(), String> {
+        let token = LocalStorage::get::<String>("auth_token")
+            .map_err(|_| "No authentication token found".to_string())?;
+
+        let window = web_sys::window().ok_or("No global window exists")?;
+
+        let opts = RequestInit::new();
+        opts.set_method("DELETE");
+        opts.set_mode(RequestMode::Cors);
+
+        let service = Self::new();
+        let url = format!("{}/external-calendars/{}", service.base_url, id);
+        let request = Request::new_with_str_and_init(&url, &opts)
+            .map_err(|e| format!("Request creation failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Authorization", &format!("Bearer {}", token))
+            .map_err(|e| format!("Authorization header setting failed: {:?}", e))?;
+
+        let resp_value = JsFuture::from(window.fetch_with_request(&request))
+            .await
+            .map_err(|e| format!("Request failed: {:?}", e))?;
+
+        let resp: Response = resp_value
+            .dyn_into()
+            .map_err(|e| format!("Response casting failed: {:?}", e))?;
+
+        if !resp.ok() {
+            return Err(format!("HTTP error: {}", resp.status()));
+        }
+
+        Ok(())
+    }
+
+    pub async fn fetch_external_calendar_events(id: i32) -> Result<Vec<VEvent>, String> {
+        let token = LocalStorage::get::<String>("auth_token")
+            .map_err(|_| "No authentication token found".to_string())?;
+
+        let window = web_sys::window().ok_or("No global window exists")?;
+
+        let opts = RequestInit::new();
+        opts.set_method("GET");
+        opts.set_mode(RequestMode::Cors);
+
+        let service = Self::new();
+        let url = format!("{}/external-calendars/{}/events", service.base_url, id);
+        let request = Request::new_with_str_and_init(&url, &opts)
+            .map_err(|e| format!("Request creation failed: {:?}", e))?;
+
+        request
+            .headers()
+            .set("Authorization", &format!("Bearer {}", token))
+            .map_err(|e| format!("Authorization header setting failed: {:?}", e))?;
+
+        let resp_value = JsFuture::from(window.fetch_with_request(&request))
+            .await
+            .map_err(|e| format!("Request failed: {:?}", e))?;
+
+        let resp: Response = resp_value
+            .dyn_into()
+            .map_err(|e| format!("Response casting failed: {:?}", e))?;
+
+        if !resp.ok() {
+            return Err(format!("HTTP error: {}", resp.status()));
+        }
+
+        let json = JsFuture::from(resp.json().unwrap())
+            .await
+            .map_err(|e| format!("JSON parsing failed: {:?}", e))?;
+
+        #[derive(Deserialize)]
+        struct ExternalCalendarEventsResponse {
+            events: Vec<VEvent>,
+        }
+
+        let response: ExternalCalendarEventsResponse = serde_wasm_bindgen::from_value(json)
+            .map_err(|e| format!("Deserialization failed: {:?}", e))?;
+
+        Ok(response.events)
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
+pub struct ExternalCalendar {
+    pub id: i32,
+    pub name: String,
+    pub url: String,
+    pub color: String,
+    pub is_visible: bool,
+    pub created_at: chrono::DateTime<chrono::Utc>,
+    pub updated_at: chrono::DateTime<chrono::Utc>,
+    pub last_fetched: Option<chrono::DateTime<chrono::Utc>>,
 }

frontend/src/services/mod.rs

@@ -1,4 +1,8 @@
 pub mod calendar_service;
 pub mod preferences;
+pub mod notification_manager;
+pub mod alarm_scheduler;
 
 pub use calendar_service::CalendarService;
+pub use notification_manager::{NotificationManager, AlarmNotification};
+pub use alarm_scheduler::AlarmScheduler;

frontend/src/services/notification_manager.rs

@@ -0,0 +1,189 @@
+use web_sys::{window, Notification, NotificationOptions, NotificationPermission};
+use wasm_bindgen::prelude::*;
+use wasm_bindgen_futures::JsFuture;
+use std::collections::HashMap;
+
+#[derive(Debug, Clone)]
+pub struct NotificationManager {
+    // Track displayed notifications to prevent duplicates
+    active_notifications: HashMap<String, Notification>,
+}
+
+#[derive(Debug, Clone)]
+pub struct AlarmNotification {
+    pub event_uid: String,
+    pub event_summary: String,
+    pub event_location: Option<String>,
+    pub alarm_time: chrono::NaiveDateTime,
+}
+
+impl NotificationManager {
+    pub fn new() -> Self {
+        Self {
+            active_notifications: HashMap::new(),
+        }
+    }
+
+    /// Check if the browser supports notifications
+    pub fn is_supported() -> bool {
+        // Check if the Notification constructor exists on the window
+        if let Some(window) = window() {
+            let has_notification = js_sys::Reflect::has(&window, &"Notification".into()).unwrap_or(false);
+            
+            // Additional check - try to access Notification directly via JsValue
+            let window_js: &wasm_bindgen::JsValue = window.as_ref();
+            let direct_check = js_sys::Reflect::get(window_js, &"Notification".into()).unwrap_or(wasm_bindgen::JsValue::UNDEFINED);
+            let has_direct = !direct_check.is_undefined();
+            
+            // Use either check
+            has_notification || has_direct
+        } else {
+            false
+        }
+    }
+
+    /// Get current notification permission status
+    pub fn get_permission() -> NotificationPermission {
+        if Self::is_supported() {
+            Notification::permission()
+        } else {
+            NotificationPermission::Denied
+        }
+    }
+
+    /// Force request notification permission (even if previously denied)
+    pub async fn force_request_permission() -> Result<NotificationPermission, JsValue> {
+        if !Self::is_supported() {
+            return Ok(NotificationPermission::Denied);
+        }
+
+        // Always request permission, regardless of current status
+        let promise = Notification::request_permission()?;
+        let js_value = JsFuture::from(promise).await?;
+        
+        // Convert JS string back to NotificationPermission
+        if let Some(permission_str) = js_value.as_string() {
+            match permission_str.as_str() {
+                "granted" => Ok(NotificationPermission::Granted),
+                "denied" => Ok(NotificationPermission::Denied),
+                _ => Ok(NotificationPermission::Default),
+            }
+        } else {
+            Ok(NotificationPermission::Denied)
+        }
+    }
+
+    /// Request notification permission from the user
+    pub async fn request_permission() -> Result<NotificationPermission, JsValue> {
+        if !Self::is_supported() {
+            return Ok(NotificationPermission::Denied);
+        }
+
+        // Check current permission status
+        let current_permission = Notification::permission();
+        if current_permission != NotificationPermission::Default {
+            return Ok(current_permission);
+        }
+
+        // Request permission
+        let promise = Notification::request_permission()?;
+        let js_value = JsFuture::from(promise).await?;
+        
+        // Convert JS string back to NotificationPermission
+        if let Some(permission_str) = js_value.as_string() {
+            match permission_str.as_str() {
+                "granted" => Ok(NotificationPermission::Granted),
+                "denied" => Ok(NotificationPermission::Denied),
+                _ => Ok(NotificationPermission::Default),
+            }
+        } else {
+            Ok(NotificationPermission::Denied)
+        }
+    }
+
+    /// Display a notification for an alarm
+    pub fn show_alarm_notification(&mut self, alarm: AlarmNotification) -> Result<(), JsValue> {
+        // Check permission
+        if Self::get_permission() != NotificationPermission::Granted {
+            return Ok(()); // Don't error, just skip
+        }
+
+        // Check if notification already exists for this event
+        if self.active_notifications.contains_key(&alarm.event_uid) {
+            return Ok(()); // Already showing notification for this event
+        }
+
+        // Create notification options
+        let options = NotificationOptions::new();
+        
+        // Set notification body with time and location
+        let body = if let Some(location) = &alarm.event_location {
+            format!("📅 {}\n📍 {}", 
+                alarm.alarm_time.format("%H:%M"), 
+                location
+            )
+        } else {
+            format!("📅 {}", alarm.alarm_time.format("%H:%M"))
+        };
+        options.set_body(&body);
+
+        // Set icon
+        options.set_icon("/favicon.ico");
+        
+        // Set tag to prevent duplicates
+        options.set_tag(&alarm.event_uid);
+        
+        // Set require interaction to keep notification visible
+        options.set_require_interaction(true);
+
+        // Create and show notification
+        let notification = Notification::new_with_options(&alarm.event_summary, &options)?;
+        
+        // Store reference to track active notifications
+        self.active_notifications.insert(alarm.event_uid.clone(), notification.clone());
+
+        // Set up click handler to focus the calendar app
+        let _event_uid = alarm.event_uid.clone();
+        let onclick_closure = Closure::wrap(Box::new(move |_event: web_sys::Event| {
+            // Focus the window when notification is clicked
+            if let Some(window) = window() {
+                let _ = window.focus();
+            }
+            
+        }) as Box<dyn FnMut(_)>);
+        
+        notification.set_onclick(Some(onclick_closure.as_ref().unchecked_ref()));
+        onclick_closure.forget(); // Keep closure alive
+
+        // Set up close handler to clean up tracking
+        let event_uid_close = alarm.event_uid.clone();
+        let mut active_notifications_close = self.active_notifications.clone();
+        let onclose_closure = Closure::wrap(Box::new(move |_event: web_sys::Event| {
+            active_notifications_close.remove(&event_uid_close);
+        }) as Box<dyn FnMut(_)>);
+        
+        notification.set_onclose(Some(onclose_closure.as_ref().unchecked_ref()));
+        onclose_closure.forget(); // Keep closure alive
+
+        Ok(())
+    }
+
+    /// Close notification for a specific event
+    pub fn close_notification(&mut self, event_uid: &str) {
+        if let Some(notification) = self.active_notifications.remove(event_uid) {
+            notification.close();
+        }
+    }
+
+
+    /// Check if notification exists for event
+    pub fn has_notification(&self, event_uid: &str) -> bool {
+        self.active_notifications.contains_key(event_uid)
+    }
+}
+
+impl Default for NotificationManager {
+    fn default() -> Self {
+        Self::new()
+    }
+}

frontend/styles/apple.css

@@ -0,0 +1,691 @@
+/* Apple Calendar-inspired styles */
+
+/* Override CSS Variables for Apple Calendar Style */
+:root {
+    /* Apple-style spacing */
+    --spacing-xs: 4px;
+    --spacing-sm: 8px;
+    --spacing-md: 12px;
+    --spacing-lg: 16px;
+    --spacing-xl: 24px;
+    
+    /* Apple-style borders and radius */
+    --border-radius-small: 6px;
+    --border-radius-medium: 10px;
+    --border-radius-large: 16px;
+    
+    /* Apple-style shadows */
+    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
+    --shadow-md: 0 3px 6px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.12);
+    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15), 0 3px 6px rgba(0, 0, 0, 0.10);
+}
+
+/* Theme-aware Apple style colors - use theme colors but with Apple aesthetic */
+[data-style="apple"] {
+    /* Use theme background and text colors */
+    --apple-bg-primary: var(--background-secondary);
+    --apple-bg-secondary: var(--background-primary);
+    --apple-text-primary: var(--text-primary);
+    --apple-text-secondary: var(--text-secondary);
+    --apple-text-tertiary: var(--text-secondary);
+    --apple-text-inverse: var(--text-inverse);
+    --apple-border-primary: var(--border-primary);
+    --apple-border-secondary: var(--border-secondary);
+    --apple-accent: var(--primary-color);
+    --apple-hover-bg: var(--background-tertiary);
+    --apple-today-accent: var(--primary-color);
+    
+    /* Apple font family */
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+}
+
+/* Theme-specific Apple style adjustments */
+[data-style="apple"][data-theme="default"] {
+    --apple-bg-tertiary: rgba(248, 249, 250, 0.8);
+    --apple-bg-sidebar: rgba(246, 246, 246, 0.7);
+    --apple-accent-bg: rgba(102, 126, 234, 0.1);
+    --apple-today-bg: rgba(102, 126, 234, 0.15);
+}
+
+[data-style="apple"][data-theme="ocean"] {
+    --apple-bg-tertiary: rgba(224, 247, 250, 0.8);
+    --apple-bg-sidebar: rgba(224, 247, 250, 0.7);
+    --apple-accent-bg: rgba(0, 105, 148, 0.1);
+    --apple-today-bg: rgba(0, 105, 148, 0.15);
+}
+
+[data-style="apple"][data-theme="forest"] {
+    --apple-bg-tertiary: rgba(232, 245, 232, 0.8);
+    --apple-bg-sidebar: rgba(232, 245, 232, 0.7);
+    --apple-accent-bg: rgba(6, 95, 70, 0.1);
+    --apple-today-bg: rgba(6, 95, 70, 0.15);
+}
+
+[data-style="apple"][data-theme="sunset"] {
+    --apple-bg-tertiary: rgba(255, 243, 224, 0.8);
+    --apple-bg-sidebar: rgba(255, 243, 224, 0.7);
+    --apple-accent-bg: rgba(234, 88, 12, 0.1);
+    --apple-today-bg: rgba(234, 88, 12, 0.15);
+}
+
+[data-style="apple"][data-theme="purple"] {
+    --apple-bg-tertiary: rgba(243, 229, 245, 0.8);
+    --apple-bg-sidebar: rgba(243, 229, 245, 0.7);
+    --apple-accent-bg: rgba(124, 58, 237, 0.1);
+    --apple-today-bg: rgba(124, 58, 237, 0.15);
+}
+
+[data-style="apple"][data-theme="dark"] {
+    --apple-bg-tertiary: rgba(31, 41, 55, 0.9);
+    --apple-bg-sidebar: rgba(44, 44, 46, 0.8);
+    --apple-accent-bg: rgba(55, 65, 81, 0.3);
+    --apple-today-bg: rgba(55, 65, 81, 0.4);
+}
+
+[data-style="apple"][data-theme="rose"] {
+    --apple-bg-tertiary: rgba(252, 228, 236, 0.8);
+    --apple-bg-sidebar: rgba(252, 228, 236, 0.7);
+    --apple-accent-bg: rgba(225, 29, 72, 0.1);
+    --apple-today-bg: rgba(225, 29, 72, 0.15);
+}
+
+[data-style="apple"][data-theme="mint"] {
+    --apple-bg-tertiary: rgba(224, 242, 241, 0.8);
+    --apple-bg-sidebar: rgba(224, 242, 241, 0.7);
+    --apple-accent-bg: rgba(16, 185, 129, 0.1);
+    --apple-today-bg: rgba(16, 185, 129, 0.15);
+}
+
+[data-style="apple"][data-theme="midnight"] {
+    --apple-bg-tertiary: rgba(21, 27, 38, 0.9);
+    --apple-bg-sidebar: rgba(21, 27, 38, 0.8);
+    --apple-accent-bg: rgba(76, 154, 255, 0.15);
+    --apple-today-bg: rgba(76, 154, 255, 0.2);
+}
+
+[data-style="apple"][data-theme="charcoal"] {
+    --apple-bg-tertiary: rgba(26, 26, 26, 0.9);
+    --apple-bg-sidebar: rgba(26, 26, 26, 0.8);
+    --apple-accent-bg: rgba(74, 222, 128, 0.15);
+    --apple-today-bg: rgba(74, 222, 128, 0.2);
+}
+
+[data-style="apple"][data-theme="nord"] {
+    --apple-bg-tertiary: rgba(59, 66, 82, 0.9);
+    --apple-bg-sidebar: rgba(59, 66, 82, 0.8);
+    --apple-accent-bg: rgba(136, 192, 208, 0.15);
+    --apple-today-bg: rgba(136, 192, 208, 0.2);
+}
+
+[data-style="apple"][data-theme="dracula"] {
+    --apple-bg-tertiary: rgba(68, 71, 90, 0.9);
+    --apple-bg-sidebar: rgba(68, 71, 90, 0.8);
+    --apple-accent-bg: rgba(189, 147, 249, 0.15);
+    --apple-today-bg: rgba(189, 147, 249, 0.2);
+}
+
+/* Apple-style body and base styles */
+[data-style="apple"] body {
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    background: var(--apple-bg-secondary);
+    color: var(--apple-text-primary);
+    font-weight: 400;
+    line-height: 1.47;
+    letter-spacing: -0.022em;
+}
+
+/* Apple-style sidebar with glassmorphism */
+[data-style="apple"] .app-sidebar {
+    background: var(--apple-bg-sidebar);
+    backdrop-filter: blur(20px);
+    -webkit-backdrop-filter: blur(20px);
+    border-right: 1px solid var(--apple-border-primary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    box-shadow: none;
+}
+
+[data-style="apple"] .sidebar-header {
+    background: transparent;
+    border-bottom: 1px solid var(--apple-border-primary);
+    padding: 20px 16px 16px 16px;
+}
+
+[data-style="apple"] .sidebar-header h1 {
+    font-size: 24px;
+    font-weight: 700;
+    color: var(--apple-text-primary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    letter-spacing: -0.04em;
+    margin-bottom: 4px;
+}
+
+[data-style="apple"] .user-info {
+    color: var(--apple-text-primary);
+    font-size: 15px;
+    line-height: 1.4;
+}
+
+[data-style="apple"] .user-info .username {
+    font-weight: 600;
+    color: var(--apple-text-primary);
+    font-size: 16px;
+}
+
+[data-style="apple"] .user-info .server-url {
+    color: var(--apple-text-secondary);
+    font-size: 13px;
+    font-weight: 400;
+}
+
+/* Apple-style buttons */
+[data-style="apple"] .create-calendar-button {
+    background: var(--apple-accent);
+    color: var(--apple-text-inverse);
+    border: none;
+    border-radius: 8px;
+    padding: 10px 16px;
+    font-weight: 600;
+    font-size: 15px;
+    cursor: pointer;
+    box-shadow: var(--shadow-sm);
+    transition: all 0.2s ease;
+    font-family: inherit;
+}
+
+[data-style="apple"] .create-calendar-button:hover {
+    transform: translateY(-1px);
+    box-shadow: var(--shadow-md);
+    background: var(--apple-accent);
+    filter: brightness(1.1);
+}
+
+[data-style="apple"] .logout-button {
+    background: var(--apple-bg-primary);
+    color: var(--apple-accent);
+    border: 1px solid var(--apple-border-primary);
+    border-radius: 8px;
+    padding: 8px 16px;
+    font-weight: 500;
+    font-size: 15px;
+    cursor: pointer;
+    transition: all 0.2s ease;
+    font-family: inherit;
+}
+
+[data-style="apple"] .logout-button:hover {
+    background: var(--apple-hover-bg);
+    transform: translateY(-1px);
+}
+
+/* Apple-style navigation */
+[data-style="apple"] .sidebar-nav .nav-link {
+    color: var(--apple-text-primary);
+    text-decoration: none;
+    padding: 8px 12px;
+    border-radius: 8px;
+    transition: all 0.2s ease;
+    display: block;
+    font-weight: 500;
+    font-size: 15px;
+}
+
+[data-style="apple"] .sidebar-nav .nav-link:hover {
+    color: var(--apple-accent);
+    background: var(--apple-hover-bg);
+    transform: translateX(2px);
+}
+
+/* Apple-style calendar list */
+[data-style="apple"] .calendar-list h3 {
+    color: var(--apple-text-primary);
+    font-size: 17px;
+    font-weight: 600;
+    letter-spacing: -0.024em;
+    margin-bottom: 12px;
+}
+
+[data-style="apple"] .calendar-list .calendar-name {
+    color: var(--apple-text-primary);
+    font-size: 15px;
+    font-weight: 500;
+}
+
+[data-style="apple"] .no-calendars {
+    color: var(--apple-text-secondary);
+    font-size: 14px;
+    font-style: italic;
+}
+
+/* Apple-style form elements */
+[data-style="apple"] .sidebar-footer label,
+[data-style="apple"] .view-selector label,
+[data-style="apple"] .theme-selector label,
+[data-style="apple"] .style-selector label {
+    color: var(--apple-text-primary);
+    font-size: 14px;
+    font-weight: 600;
+    margin-bottom: 6px;
+}
+
+[data-style="apple"] .view-selector-dropdown,
+[data-style="apple"] .theme-selector-dropdown,
+[data-style="apple"] .style-selector-dropdown {
+    border: 1px solid var(--apple-border-primary);
+    border-radius: 8px;
+    padding: 8px 12px;
+    font-size: 15px;
+    color: var(--apple-text-primary);
+    background: var(--apple-bg-primary);
+    font-family: inherit;
+    font-weight: 500;
+    transition: all 0.2s ease;
+}
+
+[data-style="apple"] .view-selector-dropdown:focus,
+[data-style="apple"] .theme-selector-dropdown:focus,
+[data-style="apple"] .style-selector-dropdown:focus {
+    outline: none;
+    border-color: var(--apple-accent);
+    box-shadow: 0 0 0 3px var(--apple-accent-bg);
+}
+
+/* Apple-style calendar list items */
+[data-style="apple"] .calendar-list .calendar-item {
+    padding: 6px 8px;
+    border-radius: 8px;
+    transition: all 0.2s ease;
+    margin-bottom: 2px;
+}
+
+[data-style="apple"] .calendar-list .calendar-item:hover {
+    background-color: var(--apple-hover-bg);
+    transform: translateX(2px);
+}
+
+/* Apple-style main content area */
+[data-style="apple"] .app-main {
+    background: var(--apple-bg-secondary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    color: var(--apple-text-primary);
+}
+
+/* Apple-style calendar header */
+[data-style="apple"] .calendar-header {
+    background: var(--apple-bg-primary);
+    color: var(--apple-text-primary);
+    padding: 20px 24px;
+    border-radius: 16px 16px 0 0;
+    box-shadow: var(--shadow-sm);
+}
+
+[data-style="apple"] .calendar-header h2,
+[data-style="apple"] .calendar-header h3,
+[data-style="apple"] .month-header,
+[data-style="apple"] .week-header {
+    color: var(--apple-text-primary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    font-weight: 700;
+    letter-spacing: -0.04em;
+}
+
+/* Apple-style headings */
+[data-style="apple"] h1,
+[data-style="apple"] h2, 
+[data-style="apple"] h3,
+[data-style="apple"] .month-title,
+[data-style="apple"] .calendar-title,
+[data-style="apple"] .current-month,
+[data-style="apple"] .month-year,
+[data-style="apple"] .header-title {
+    color: var(--apple-text-primary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    font-weight: 700;
+    letter-spacing: -0.04em;
+}
+
+/* Apple-style navigation buttons */
+[data-style="apple"] button,
+[data-style="apple"] .nav-button,
+[data-style="apple"] .calendar-nav-button,
+[data-style="apple"] .prev-button,
+[data-style="apple"] .next-button,
+[data-style="apple"] .arrow-button {
+    color: var(--apple-text-primary);
+    background: var(--apple-bg-primary);
+    border: 1px solid var(--apple-border-primary);
+    border-radius: 8px;
+    padding: 8px 12px;
+    font-weight: 600;
+    transition: all 0.2s ease;
+    font-family: inherit;
+}
+
+[data-style="apple"] button:hover,
+[data-style="apple"] .nav-button:hover,
+[data-style="apple"] .calendar-nav-button:hover,
+[data-style="apple"] .prev-button:hover,
+[data-style="apple"] .next-button:hover,
+[data-style="apple"] .arrow-button:hover {
+    background: var(--apple-accent-bg);
+    color: var(--apple-accent);
+    border-color: var(--apple-accent);
+    transform: translateY(-1px);
+    box-shadow: var(--shadow-sm);
+}
+
+/* Apple-style calendar controls */
+[data-style="apple"] .calendar-controls,
+[data-style="apple"] .current-date,
+[data-style="apple"] .date-display {
+    color: var(--apple-text-primary);
+    font-weight: 600;
+}
+
+/* Apple-style calendar grid */
+[data-style="apple"] .calendar-grid,
+[data-style="apple"] .calendar-container {
+    border: 1px solid var(--apple-border-primary);
+    border-radius: 16px;
+    overflow: hidden;
+    background: var(--apple-bg-primary);
+    box-shadow: var(--shadow-lg);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    margin: 16px;
+}
+
+[data-style="apple"] .month-header,
+[data-style="apple"] .week-header {
+    font-size: 28px;
+    font-weight: 700;
+    color: var(--apple-text-primary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    letter-spacing: -0.04em;
+}
+
+/* Apple-style calendar cells */
+[data-style="apple"] .calendar-day,
+[data-style="apple"] .day-cell {
+    border: 1px solid var(--apple-border-secondary);
+    background: var(--apple-bg-primary);
+    transition: all 0.3s ease;
+    padding: 12px;
+    min-height: 120px;
+    position: relative;
+}
+
+[data-style="apple"] .calendar-day:hover,
+[data-style="apple"] .day-cell:hover {
+    background: var(--apple-hover-bg);
+    transform: scale(1.02);
+    box-shadow: var(--shadow-sm);
+    z-index: 10;
+}
+
+[data-style="apple"] .calendar-day.today,
+[data-style="apple"] .day-cell.today {
+    background: var(--apple-today-bg);
+    border-color: var(--apple-today-accent);
+    position: relative;
+}
+
+[data-style="apple"] .calendar-day.today::before,
+[data-style="apple"] .day-cell.today::before {
+    content: '';
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    height: 3px;
+    background: var(--apple-today-accent);
+    border-radius: 2px 2px 0 0;
+}
+
+[data-style="apple"] .calendar-day.other-month,
+[data-style="apple"] .day-cell.other-month {
+    background: var(--apple-bg-secondary);
+    color: var(--apple-text-secondary);
+    opacity: 0.6;
+}
+
+[data-style="apple"] .day-number,
+[data-style="apple"] .date-number {
+    font-size: 16px;
+    font-weight: 600;
+    color: var(--apple-text-primary);
+    margin-bottom: 6px;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+}
+
+/* Apple-style day headers */
+[data-style="apple"] .day-header,
+[data-style="apple"] .weekday-header {
+    background: var(--apple-bg-secondary);
+    color: var(--apple-text-secondary);
+    font-size: 13px;
+    font-weight: 600;
+    text-transform: uppercase;
+    letter-spacing: 0.5px;
+    padding: 12px;
+    border-bottom: 1px solid var(--apple-border-primary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+}
+
+/* Apple Calendar-style events */
+[data-style="apple"] .event {
+    border-radius: 6px;
+    padding: 4px 8px;
+    font-size: 12px;
+    font-weight: 500;
+    margin: 2px 0;
+    cursor: pointer;
+    border: none;
+    color: white;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    box-shadow: var(--shadow-sm);
+    transition: all 0.2s ease;
+    display: block;
+    text-overflow: ellipsis;
+    overflow: hidden;
+    white-space: nowrap;
+    line-height: 1.3;
+    position: relative;
+}
+
+[data-style="apple"] .event::before {
+    content: '';
+    position: absolute;
+    left: 0;
+    top: 0;
+    bottom: 0;
+    width: 3px;
+    background: rgba(255, 255, 255, 0.8);
+    border-radius: 2px 0 0 2px;
+}
+
+[data-style="apple"] .event * {
+    color: white;
+    font-family: inherit;
+}
+
+[data-style="apple"] .event:hover {
+    transform: translateY(-1px) scale(1.02);
+    box-shadow: var(--shadow-md);
+}
+
+/* All-day events styling */
+[data-style="apple"] .event.all-day {
+    border-radius: 16px;
+    padding: 6px 12px;
+    font-weight: 600;
+    margin: 3px 0;
+    font-size: 13px;
+}
+
+[data-style="apple"] .event.all-day::before {
+    display: none;
+}
+
+/* Event time display */
+[data-style="apple"] .event-time {
+    opacity: 0.9;
+    font-size: 11px;
+    margin-right: 4px;
+    font-weight: 600;
+}
+
+/* Calendar table structure */
+[data-style="apple"] .calendar-table,
+[data-style="apple"] table {
+    border-collapse: separate;
+    border-spacing: 0;
+    width: 100%;
+    background: var(--apple-bg-primary);
+}
+
+[data-style="apple"] .calendar-table td,
+[data-style="apple"] table td {
+    vertical-align: top;
+    border: 1px solid var(--apple-border-secondary);
+    background: var(--apple-bg-primary);
+}
+
+/* Apple-style view toggle */
+[data-style="apple"] .view-toggle {
+    display: flex;
+    gap: 0;
+    background: var(--apple-bg-primary);
+    border-radius: 10px;
+    padding: 2px;
+    box-shadow: var(--shadow-sm);
+    border: 1px solid var(--apple-border-primary);
+}
+
+[data-style="apple"] .view-toggle button {
+    padding: 8px 16px;
+    border: none;
+    background: transparent;
+    color: var(--apple-text-secondary);
+    border-radius: 8px;
+    font-size: 15px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: all 0.2s ease;
+    font-family: inherit;
+}
+
+[data-style="apple"] .view-toggle button.active {
+    background: var(--apple-accent);
+    color: var(--apple-text-inverse);
+    box-shadow: var(--shadow-sm);
+    transform: scale(1.02);
+}
+
+/* Apple-style today button */
+[data-style="apple"] .today-button {
+    background: var(--apple-accent);
+    border: none;
+    color: var(--apple-text-inverse);
+    padding: 10px 16px;
+    border-radius: 10px;
+    font-weight: 600;
+    font-size: 15px;
+    cursor: pointer;
+    transition: all 0.2s ease;
+    box-shadow: var(--shadow-sm);
+    font-family: inherit;
+}
+
+[data-style="apple"] .today-button:hover {
+    transform: translateY(-1px);
+    box-shadow: var(--shadow-md);
+    filter: brightness(1.1);
+}
+
+/* Apple-style modals */
+[data-style="apple"] .modal-overlay {
+    background: rgba(0, 0, 0, 0.4);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+}
+
+[data-style="apple"] .modal-content {
+    background: var(--apple-bg-primary);
+    border-radius: 16px;
+    box-shadow: var(--shadow-lg);
+    border: 1px solid var(--apple-border-primary);
+    color: var(--apple-text-primary);
+    backdrop-filter: blur(20px);
+    -webkit-backdrop-filter: blur(20px);
+}
+
+[data-style="apple"] .modal h2 {
+    font-size: 22px;
+    font-weight: 700;
+    color: var(--apple-text-primary);
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
+    letter-spacing: -0.04em;
+}
+
+/* Apple-style form inputs */
+[data-style="apple"] input[type="text"],
+[data-style="apple"] input[type="email"],
+[data-style="apple"] input[type="password"],
+[data-style="apple"] input[type="url"],
+[data-style="apple"] input[type="date"],
+[data-style="apple"] input[type="time"],
+[data-style="apple"] textarea,
+[data-style="apple"] select {
+    border: 1px solid var(--apple-border-primary);
+    border-radius: 8px;
+    padding: 10px 12px;
+    font-size: 15px;
+    color: var(--apple-text-primary);
+    background: var(--apple-bg-primary);
+    font-family: inherit;
+    font-weight: 500;
+    transition: all 0.2s ease;
+}
+
+[data-style="apple"] input:focus,
+[data-style="apple"] textarea:focus,
+[data-style="apple"] select:focus {
+    outline: none;
+    border-color: var(--apple-accent);
+    box-shadow: 0 0 0 3px var(--apple-accent-bg);
+    transform: scale(1.02);
+}
+
+/* Apple-style labels */
+[data-style="apple"] label {
+    font-size: 15px;
+    font-weight: 600;
+    color: var(--apple-text-primary);
+    margin-bottom: 6px;
+    display: block;
+    letter-spacing: -0.01em;
+}
+
+/* Smooth animations and transitions */
+[data-style="apple"] * {
+    transition-timing-function: cubic-bezier(0.4, 0.0, 0.2, 1);
+}
+
+/* Custom scrollbar for Apple style */
+[data-style="apple"] ::-webkit-scrollbar {
+    width: 8px;
+    height: 8px;
+}
+
+[data-style="apple"] ::-webkit-scrollbar-track {
+    background: transparent;
+}
+
+[data-style="apple"] ::-webkit-scrollbar-thumb {
+    background: var(--apple-text-secondary);
+    border-radius: 4px;
+    opacity: 0.3;
+}
+
+[data-style="apple"] ::-webkit-scrollbar-thumb:hover {
+    opacity: 0.6;
+}

frontend/styles/base.css

@@ -1,51 +0,0 @@
-/* Base Styles - Always Loaded */
-* {
-    margin: 0;
-    padding: 0;
-    box-sizing: border-box;
-}
-
-body {
-    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
-    background-color: #f8f9fa;
-    color: #333;
-    line-height: 1.6;
-}
-
-.app {
-    min-height: 100vh;
-    display: flex;
-    flex-direction: row;
-}
-
-.login-layout {
-    min-height: 100vh;
-    display: flex;
-    flex-direction: column;
-    width: 100%;
-}
-
-/* Base Layout */
-.main-content {
-    flex: 1;
-    margin-left: 280px;
-    overflow-x: hidden;
-}
-
-/* Basic Form Elements */
-input, select, textarea, button {
-    font-family: inherit;
-}
-
-/* Utility Classes */
-.loading {
-    opacity: 0.7;
-}
-
-.error {
-    color: #dc3545;
-}
-
-.success {
-    color: #28a745;
-}