- Add Geist font family and refined OKLCH color palette
- Redesign all dashboard components with polished styling
- Implement URL-synced tabs for performance table (domain, country, source, ad-unit, key-value)
- Add mobile hamburger menu using shadcn Sheet component
- Make sidebar responsive (hidden on mobile, visible on lg+)
- Add custom shadow utilities and improved visual hierarchy
- Add sparklines with gradients to metric cards
- Redesign peak traffic chart as heatmap grid
- Add icons and hover states to frequent filters
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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