Add complete navigation and theming infrastructure:
**Theme System:**
- ThemeProvider component with React Context
- Supports light, dark, and system themes
- Persists preference to localStorage
- Auto-detects system theme preference
- Listens for system theme changes
- Smooth theme transitions
- ThemeToggle component
- Sun/Moon icon toggle button
- Accessible with ARIA labels
- Shows current theme state
- Keyboard accessible
**Navigation:**
- Navbar component with sticky header
- Gradient logo with Palette icon
- Desktop horizontal navigation
- Mobile responsive menu
- Active route highlighting
- Backdrop blur effect
- Links to all main sections:
- Home
- Playground
- Palettes
- Accessibility
- Named Colors
- Batch Operations
**Layout Updates:**
- Integrated Navbar into root layout
- Added ThemeProvider to Providers wrapper
- Proper HTML suppressHydrationWarning for theme
- Container-based responsive layout
**Features:**
- Theme persists across page reloads
- System theme preference detection
- Active navigation state
- Smooth hover transitions
- Mobile-first responsive design
- Accessible navigation with proper semantics
**Styling:**
- Gradient text logo (pink → purple → blue)
- Sticky top navbar with backdrop blur
- Border bottom for visual separation
- Consistent spacing and padding
- Mobile menu slides in smoothly
Build successful! Navigation and theming complete.
Next: Palette generation pages and additional features.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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