- Updated track page cards to match home page styling with vibrant colors
- Applied consistent 140px height cards across track and insights pages
- Added mobile header bar with connection status and user menu
- Moved user menu from floating top-left to fixed header top-right
- Updated insights dashboard with home page color palette (#E91E63, #1976D2, etc.)
- Centered cards with minWidth constraints (200px for stats, 400px for charts)
- Fixed hydration mismatch by replacing JS media queries with CSS breakpoints
- Improved accessibility with viewport settings (removed zoom restrictions)
- Added UI improvements documentation
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Co-Authored-By: Claude <noreply@anthropic.com>