Create Animated Quiz Transitions and Page Animations

**Title:** Implement Smooth Page Transitions and Component Animations

## Problem Statement

The application lacks smooth transitions between pages and animated component entries, making the user experience feel abrupt and static. Well-designed animations improve perceived performance and create a polished, professional feel.

## Proposed Solution

Implement comprehensive animation system including:

* Route transitions (page changes)
* Component enter/exit animations
* Question transitions in quiz
* Modal animations
* Loading skeletons
* Scroll-triggered animations

## Acceptance Criteria

### ✅ Page Transition Animations

* Fade transition between routes (300ms)
* Slide-in from right for forward navigation
* Slide-in from left for back navigation
* Use Framer Motion or React Transition Group
* Smooth easing functions (ease-in-out)
* No layout shift during transitions

### ✅ Quiz Question Transitions

* Slide out old question (left)
* Slide in new question (right)
* Answer options fade in sequentially (stagger)
* Progress bar smooth animation
* Question number change with flip animation
* 400ms transition duration

### ✅ Modal Animations

* Backdrop fade-in (200ms)
* Modal scale-in from 0.9 to 1.0
* Bounce effect on entry (subtle)
* Fade-out on close
* Slide-down on close option
* Backdrop blur animation

### ✅ Component Entry Animations

* Cards fade-in and slide-up on page load
* Stagger animation for multiple cards (50ms delay)
* List items animate in from left
* Headers slide-in from top
* Buttons scale-in on hover
* Forms fade-in field by field

### ✅ Loading Skeletons

* Shimmer effect for loading states
* Skeleton loaders match component shapes
* Pulse animation for content loading
* Smooth transition from skeleton to content
* Use react-loading-skeleton library
* Apply to quiz list, results, history

### ✅ Scroll Animations

* Fade-in elements on scroll into view
* Parallax effect on hero sections (optional)
* Sticky header slide-in on scroll
* Back-to-top button fade-in when scrolled
* Use Intersection Observer API
* Respect prefers-reduced-motion

### ✅ Micro-Animations

* Button ripple effect on click
* Input focus border expand animation
* Checkbox check animation
* Radio button fill animation
* Switch toggle slide animation
* Tooltip fade-in on hover

### ✅ Interactive Animations

* Hover scale effect on cards (1.02x)
* Answer option highlight on hover
* Active state animations for buttons
* Drag-and-drop ghost element animation
* Swipe gestures with visual feedback

### ✅ Performance Optimizations

* Use CSS transforms (translateX/Y, scale) over position/width
* Leverage GPU acceleration with will-change
* Use requestAnimationFrame for JS animations
* Debounce scroll animations
* Lazy load animations only when needed
* Measure FPS and ensure >60fps

### ✅ Accessibility Considerations

* Respect prefers-reduced-motion media query
* Disable animations for users who prefer reduced motion
* Keyboard users see focus animations
* Screen readers ignore decorative animations
* Critical information not conveyed via animation alone

### ✅ Animation Settings

* Toggle in settings: Enable/Disable animations
* Animation speed control (Slow/Normal/Fast)
* Save preference in localStorage
* Apply globally across all components