- 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 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>