🎨 Theme Customizer Improvements:
- Added ultra transparent background for real-time UI preview
- Created custom Light/Dark mode preview cards with realistic UI mockups
- Implemented spinning gear animation for settings icon (always rotating)
- Added beautiful hover effects and selected state animations
🖼️ Custom Preview Cards:
- Browser-style header with macOS-like dots (red, yellow, green)
- Mini sidebar with menu items and active states
- Realistic content areas with proper color schemes
- Interactive animations with hover and selection feedback
🔄 Settings Icon Animation:
- Continuous spinning animation (3s/rotation)
- Faster rotation on hover (1.5s with glow effects)
- Even faster when panel open + hover (0.8s)
- Smooth transitions with cubic-bezier timing
🎯 User Experience:
- Real-time theme preview through transparent sidebar
- Visual feedback for all interactive elements
- Professional appearance with modern design patterns
- Mobile-responsive and performance optimized
🔧 Technical Improvements:
- Fixed SCSS syntax errors and proper nesting
- Added comprehensive CSS animations and keyframes
- Implemented proper state management for theme switching
- Enhanced accessibility with proper contrast and shadows
