- Add 4 new dark themes: Midnight, Charcoal, Nord, Dracula with complete CSS variable definitions
- Create Apple Calendar style with glassmorphism effects and theme-aware design
- Fix Google Calendar style to be theme-aware instead of using hardcoded colors
- Replace hardcoded colors in modal CSS with theme variables for consistent theming
- Add data-style attribute support to document root for style-specific CSS selectors
- Update sidebar dropdowns to include all new theme and style options
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
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