Add NextSnap PWA with photo gallery viewer and continuous capture
Offline-first photo capture app for Nextcloud with: - Camera capture with continuous mode (auto-reopens after each photo) - File browser with fullscreen image gallery, swipe navigation, and rename - Upload queue with background sync engine - Admin panel for Nextcloud user management - Service worker for offline-first caching (v13) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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POLISH.md
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POLISH.md
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# NextSnap Polish & UX Enhancements
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This document describes all the polish, animations, and UX enhancements implemented in Module 14.
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## Overview
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NextSnap includes comprehensive polish to provide a smooth, professional user experience with:
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- Smooth animations and transitions
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- Enhanced accessibility features
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- Micro-interactions and feedback
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- Loading states and indicators
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- Dark mode support
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- Reduced motion support for accessibility
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## Visual Enhancements
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### Animations
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#### Page Transitions
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- **Fade-in animation** on page load (300ms)
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- Subtle upward motion for content reveal
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- Smooth transitions between pages
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#### Button Interactions
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- **Hover effect**: Lift up 2px with shadow
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- **Active state**: Press down with reduced shadow
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- **Ripple effect**: White ripple on click
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- **3D transform**: Smooth scale transitions
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#### Connectivity Indicator
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- **Online**: Green with pulsing glow effect
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- **Offline**: Gray with fade pulse
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- **Syncing**: Yellow with continuous pulse
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- Smooth color transitions between states
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#### Loading States
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- **Top loading bar**: Animated progress bar
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- **Spinners**: Smooth rotation with easing
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- **Skeleton loaders**: Shimmer effect for content loading
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- **Image fade-in**: Smooth appearance on load
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### Micro-Interactions
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#### Form Elements
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- **Focus state**: Lift up with blue shadow
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- **Validation**: Real-time feedback
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- **Invalid input**: Red border with shake animation
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- **Valid input**: Green border confirmation
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#### Cards & Items
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- **Hover**: Lift up 2px with shadow
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- **Queue items**: Smooth transform on hover
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- **Thumbnails**: Scale and shadow on hover
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- **Table rows**: Subtle scale on hover
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#### Navigation
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- **Active indicator**: Animated underline
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- **Hover effect**: Growing underline
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- **Icon bounce**: On selection
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- **Smooth transitions**: 200ms easing
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### Toast Notifications
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- **Slide up animation**: From bottom
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- **Auto-dismiss**: 2-3 seconds
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- **Color coding**:
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- Success: Green background
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- Error: Red background
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- Warning: Orange background
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- Info: Dark background
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- **Smooth fade-out**
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### Modal Dialogs
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- **Backdrop fade-in**: 200ms
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- **Content slide-up**: 300ms
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- **Close animation**: Reverse of open
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- **Outside click**: Smooth dismiss
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## Keyboard Shortcuts
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Global keyboard shortcuts for power users:
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| Shortcut | Action |
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|----------|--------|
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| `Alt + 1` | Go to Capture page |
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| `Alt + 2` | Go to Queue page |
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| `Alt + 3` | Go to Files/Browser page |
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| `Alt + R` | Trigger sync/refresh |
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| `Esc` | Close modals/exit reviewer |
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| `Arrow Left/Right` | Navigate in photo reviewer |
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## Accessibility Features
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### Focus Management
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- **Visible focus**: 2px accent color outline
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- **Focus trap**: In modals
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- **Keyboard navigation**: All interactive elements
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- **Skip links**: For screen readers
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### Reduced Motion
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Respects `prefers-reduced-motion` system setting:
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- Animations reduced to 10ms
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- No continuous animations
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- Instant transitions
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- Better for motion sensitivity
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### Screen Reader Support
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- Semantic HTML5 elements
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- ARIA labels where needed
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- Alt text for images
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- Meaningful link text
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### Color Contrast
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- WCAG AA compliant color ratios
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- Dark mode with proper contrast
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- Clear visual hierarchy
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- Status colors are distinguishable
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## Dark Mode
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Automatic dark mode based on system preference:
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### Light Mode
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- White/light gray backgrounds
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- Dark text
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- Subtle shadows
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- Bright accent colors
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### Dark Mode
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- Dark backgrounds (#1a1a2e, #16213e)
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- White/light gray text
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- Enhanced shadows
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- Adjusted accent colors
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- Reduced eye strain
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Activated via `prefers-color-scheme: dark` media query.
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## Performance Optimizations
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### Image Loading
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- **Lazy loading**: Images load as needed
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- **Intersection Observer**: Efficient viewport detection
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- **Fade-in**: Smooth appearance
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- **Preloading**: Adjacent images in reviewer
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### Animation Performance
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- **CSS transforms**: Hardware accelerated
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- **Will-change**: Optimized for animations
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- **RequestAnimationFrame**: Smooth 60fps
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- **Debouncing**: Reduces unnecessary calls
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### Loading States
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- **Skeleton screens**: Immediate visual feedback
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- **Progressive enhancement**: Content shows before images
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- **Optimistic UI**: Instant feedback, verify later
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## Error Handling
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### Visual Feedback
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- **Shake animation**: On validation errors
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- **Color indicators**: Red for errors
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- **Toast notifications**: Clear error messages
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- **Inline validation**: Real-time feedback
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### Network Errors
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- **Offline detection**: Automatic notification
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- **Retry logic**: Exponential backoff
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- **Queue persistence**: Never lose data
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- **Connection restoration**: Automatic sync
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## Mobile Optimizations
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### Touch Interactions
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- **Large tap targets**: Minimum 48x48px
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- **Swipe gestures**: In photo reviewer
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- **Pull to refresh**: Coming soon
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- **Haptic feedback**: Vibration on actions
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### Responsive Design
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- **Mobile-first**: Optimized for small screens
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- **Touch-friendly**: Large buttons and spacing
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- **Safe areas**: iOS notch support
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- **Viewport units**: Proper mobile sizing
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### PWA Features
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- **Installable**: Add to home screen
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- **Offline-first**: Works without connection
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- **Fast loading**: Cached app shell
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- **Native feel**: Full-screen mode
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## User Feedback
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### Success States
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- ✅ Checkmark animations
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- Green color coding
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- Success toasts
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- Smooth transitions
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### Loading States
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- 🔄 Loading spinners
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- Progress bars
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- Skeleton screens
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- Shimmer effects
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### Error States
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- ❌ Error icons
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- Red color coding
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- Shake animations
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- Clear error messages
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### Empty States
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- 📭 Empty illustrations
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- Helpful messages
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- Call-to-action buttons
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- Fade-in animations
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## Utility Functions
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The `polish.js` module provides helper functions:
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```javascript
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// Show toast notification
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Polish.showToast(message, type, duration);
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// Confirm dialog
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await Polish.confirm(message, title);
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// Copy to clipboard
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await Polish.copyToClipboard(text);
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// Loading indicator
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Polish.showLoading();
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Polish.hideLoading();
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// Vibrate feedback
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Polish.vibrate(50);
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// Format helpers
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Polish.formatFileSize(bytes);
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Polish.formatRelativeTime(date);
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// Debounce/Throttle
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Polish.debounce(func, wait);
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Polish.throttle(func, limit);
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```
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## CSS Classes
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### Utility Classes
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- `.skeleton` - Shimmer loading effect
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- `.loading-bar` - Top progress bar
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- `.clickable` - Pointer cursor + active state
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- `.success-icon` - Animated checkmark
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- `.badge` - Status badges with animation
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### State Classes
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- `.online` - Online status styling
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- `.offline` - Offline status styling
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- `.syncing` - Syncing status styling
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- `.active` - Active navigation item
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- `.disabled` - Disabled state
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## Browser Support
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### Modern Browsers
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- Chrome 90+
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- Firefox 88+
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- Safari 14+
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- Edge 90+
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### Progressive Enhancement
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- Core functionality works in all browsers
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- Enhanced features for modern browsers
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- Graceful degradation for older browsers
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### Feature Detection
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- Service Workers
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- IntersectionObserver
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- Clipboard API
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- Vibration API
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## Testing Recommendations
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### Visual Testing
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- [ ] Check animations in different browsers
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- [ ] Test dark mode switching
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- [ ] Verify hover states on all buttons
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- [ ] Check loading states
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- [ ] Test toast notifications
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### Interaction Testing
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- [ ] Test all keyboard shortcuts
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- [ ] Verify touch interactions on mobile
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- [ ] Check swipe gestures
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- [ ] Test form validation feedback
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- [ ] Verify modal interactions
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### Accessibility Testing
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- [ ] Screen reader navigation
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- [ ] Keyboard-only navigation
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- [ ] Color contrast checking
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- [ ] Reduced motion testing
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- [ ] Focus management
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### Performance Testing
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- [ ] Animation frame rate (60fps)
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- [ ] Image loading speed
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- [ ] Lazy loading behavior
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- [ ] Memory usage
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- [ ] Network performance
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## Future Enhancements
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Potential improvements for future versions:
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- Pull-to-refresh on mobile
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- Swipe-to-delete in queue
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- Haptic feedback patterns
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- Custom themes
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- Animation preferences
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- Sound effects (optional)
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- Advanced gestures
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- Drag-and-drop uploads
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- Batch selection mode
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- Context menus
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## Credits
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- **CSS Animations**: Custom cubic-bezier easing
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- **Icons**: Native emoji for universal support
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- **Typography**: System font stack for performance
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- **Colors**: Material Design inspired palette
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---
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For implementation details, see:
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- `app/static/css/style.css` - All CSS animations
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- `app/static/js/polish.js` - JavaScript utilities
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- `app/templates/base.html` - Base template structure
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