/* ========================================
   ENHANCED CSS - JAVASOURCECODE V4.0 ULTRA
   Premium Glass-Morphism Design System
======================================== */

/* ========================================
   ROOT VARIABLES & DESIGN TOKENS
======================================== */
:root {
    /* Primary Color Palette */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    /* Secondary Color Palette */
    --secondary-50: #fdf2f8;
    --secondary-100: #fce7f3;
    --secondary-200: #fbcfe8;
    --secondary-300: #f9a8d4;
    --secondary-400: #f472b6;
    --secondary-500: #ec4899;
    --secondary-600: #db2777;
    --secondary-700: #be185d;
    --secondary-800: #9d174d;
    --secondary-900: #831843;
    
    /* Accent Colors */
    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-orange: #f59e0b;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-blue: #3b82f6;
    
    /* Core Colors */
    --primary-color: var(--primary-500);
    --primary-dark: var(--primary-700);
    --primary-light: var(--primary-400);
    --secondary-color: var(--secondary-500);
    --secondary-dark: var(--secondary-700);
    
    /* Neutral Colors - Light Theme */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-inverse: #ffffff;
    --bg-primary: #A3E0D6f2;
    --bg-secondary: #D4df7;
    --bg-tertiary: #e9eef5;
    --bg-elevated: #ffffff;
    
    /* Glass Morphism */
    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-bg-dark: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.35);
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
    --glass-shadow-lg: 0 12px 48px rgba(31, 38, 135, 0.2);
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-display: 'Space Grotesk', 'Poppins', sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
    
    /* Z-Index Scale */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-navbar: 1000;
    --z-modal: 2000;
    --z-loading: 3000;
    --z-notification: 4000;
    --z-tooltip: 5000;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-500), var(--secondary-700));
    --gradient-vibrant: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    --gradient-sunset: linear-gradient(135deg, #ff6b6b, #feca57, #ff9ff3);
    --gradient-ocean: linear-gradient(135deg, #667eea, #764ba2);
    --gradient-fire: linear-gradient(135deg, #ff6b35, #f7931e);
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-inverse: #1e293b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --glass-bg: rgba(30, 41, 59, 0.75);
    --glass-bg-dark: rgba(30, 41, 59, 0.3);
    --glass-border: rgba(148, 163, 184, 0.15);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --glass-shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
}

/* ========================================
   RESET & BASE STYLES
======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    transition: background var(--transition-normal), color var(--transition-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-600), var(--secondary-600));
}

/* Selection */
::selection {
    background: var(--primary-500);
    color: white;
}

::-moz-selection {
    background: var(--primary-500);
    color: white;
}

/* ========================================
   PARTICLES BACKGROUND
======================================== */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.5;
}

/* ========================================
   CUSTOM CURSOR
======================================== */
.cursor-dot,
.cursor-outline {
    pointer-events: none;
    position: fixed;
    top: 0;
    left: 0;
    border-radius: 50%;
    z-index: 10000;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

.cursor-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-500);
    transform: translate(-50%, -50%);
}

.cursor-outline {
    width: 32px;
    height: 32px;
    border: 2px solid var(--primary-500);
    transform: translate(-50%, -50%);
    transition: transform 0.3s ease, width 0.3s ease, height 0.3s ease;
}

.cursor-outline.hover {
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.1);
}

/* ========================================
   ENHANCED LOADING SCREEN
======================================== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loading);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-logo {
    margin-bottom: 2rem;
}

.code-wave {
    display: flex;
    gap: 1rem;
    justify-content: center;
    font-size: 4rem;
    font-family: var(--font-mono);
    font-weight: 700;
}

.code-wave span {
    animation: codeWave 1.5s ease-in-out infinite;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.code-wave span:nth-child(1) { animation-delay: 0s; }
.code-wave span:nth-child(2) { animation-delay: 0.2s; }
.code-wave span:nth-child(3) { animation-delay: 0.4s; }

@keyframes codeWave {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.1); }
}

.loading-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.loading-text {
    font-size: var(--text-lg);
    margin: 1.5rem 0;
    opacity: 0.95;
}

.loading-bar {
    width: 350px;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    margin: 2rem auto 1rem;
    overflow: hidden;
}

.loading-progress {
    height: 100%;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.6);
    transition: width 0.3s ease;
}

.loading-percentage {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-top: 1rem;
}

.loading-dots {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.loading-dots span {
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    animation: loadingDots 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(1) { animation-delay: 0s; }
.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes loadingDots {
    0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
    40% { transform: scale(1.2); opacity: 1; }
}

/* ========================================
   PROGRESS BAR
======================================== */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    z-index: calc(var(--z-navbar) + 1);
    transition: width 0.3s ease;
    box-shadow: 0 0 15px var(--primary-500);
}

/* ========================================
   SCROLL TO TOP BUTTON
======================================== */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
    transition: all var(--transition-normal);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   UTILITIES
======================================== */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-animated {
    background: linear-gradient(270deg, var(--primary-500), var(--secondary-500), var(--accent-cyan));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 4s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.glass-morphism {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.highlight-text {
    color: var(--primary-500);
    font-weight: 600;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   ENHANCED NAVIGATION
======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    z-index: var(--z-navbar);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    box-shadow: var(--glass-shadow);
}

.nav-container {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: var(--shadow-md);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text span:first-child {
    font-size: var(--text-xl);
    font-weight: 700;
    line-height: 1.2;
}

.logo-tagline {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    font-weight: 500;
    font-size: var(--text-sm);
}

.nav-link-underline {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

.nav-link:hover .nav-link-underline,
.nav-link.active .nav-link-underline {
    width: 70%;
}

.nav-link:hover {
    color: var(--primary-500);
    background: rgba(99, 102, 241, 0.05);
    transform: translateY(-2px);
}

.nav-link.active {
    color: var(--primary-500);
    font-weight: 600;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.icon-btn {
    position: relative;
    width: 48px;
    height: 48px;
    border: none;
    background: var(--glass-bg);
    color: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.icon-btn:hover {
    background: var(--primary-500);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.tooltip-container {
    position: relative;
}

.tooltip {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%) scale(0);
    padding: 0.5rem 1rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    white-space: nowrap;
    opacity: 0;
    transition: all var(--transition-fast);
    pointer-events: none;
    box-shadow: var(--shadow-lg);
    z-index: 100;
}

.tooltip-container:hover .tooltip {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid var(--secondary-500);
    transform: translate(-50%, -50%);
    animation: pulseRing 2s ease-in-out infinite;
    opacity: 0;
}

#voiceSearch.listening .pulse-ring {
    opacity: 1;
}

@keyframes pulseRing {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    50% { transform: translate(-50%, -50%) scale(1.3); opacity: 0.4; }
    100% { transform: translate(-50%, -50%) scale(1.6); opacity: 0; }
}

.streak-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.streak-badge:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.streak-badge i {
    animation: fire 1.5s ease-in-out infinite;
    font-size: 1.3rem;
}

@keyframes fire {
    0%, 100% { transform: scale(1) rotate(-5deg); }
    50% { transform: scale(1.15) rotate(5deg); }
}

.notification-btn {
    position: relative;
}

.notification-count {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--accent-red);
    color: white;
    border-radius: 50%;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: notificationPulse 2s ease-in-out infinite;
}

@keyframes notificationPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mega Menu */
.mega-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    margin-top: 1rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all var(--transition-normal);
    pointer-events: none;
}

.mega-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: all;
}

.mega-menu-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    padding: 2rem;
}

.mega-menu-column h3 {
    font-size: var(--text-lg);
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mega-menu-column ul {
    list-style: none;
}

.mega-menu-column ul li {
    margin-bottom: 0.75rem;
}

.mega-menu-column ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: block;
    padding: 0.25rem 0;
}

.mega-menu-column ul li a:hover {
    color: var(--primary-500);
    transform: translateX(5px);
}

.mega-menu-highlight {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.trending-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--glass-bg-dark);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    transition: all var(--transition-fast);
}

.trending-item:hover {
    transform: translateX(5px);
    background: rgba(99, 102, 241, 0.1);
}

.trending-item i {
    font-size: 1.5rem;
    color: var(--primary-500);
}

.trending-item h4 {
    font-size: var(--text-sm);
    margin-bottom: 0.25rem;
}

.trending-item p {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* Notification Panel */
.notification-panel {
    position: fixed;
    top: 80px;
    right: -400px;
    width: 380px;
    max-height: 600px;
    padding: 0;
    overflow: hidden;
    transition: right var(--transition-normal);
    z-index: 999;
}

.notification-panel.active {
    right: 1rem;
}

.notification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.notification-header h3 {
    font-size: var(--text-lg);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.clear-all-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--primary-500);
    border: 1px solid var(--primary-500);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--text-xs);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.clear-all-btn:hover {
    background: var(--primary-500);
    color: white;
}

.notification-list {
    max-height: 500px;
    overflow-y: auto;
}

.notification-item {
    display: flex;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--glass-border);
    transition: background var(--transition-fast);
}

.notification-item.unread {
    background: rgba(99, 102, 241, 0.05);
}

.notification-item:hover {
    background: rgba(99, 102, 241, 0.08);
}

.notification-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.notification-icon.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
}

.notification-icon.info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.notification-icon.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

.notification-content h4 {
    font-size: var(--text-sm);
    margin-bottom: 0.25rem;
}

.notification-content p {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.notification-time {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 8rem 2rem 6rem;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.35;
    animation: float 25s ease-in-out infinite;
    pointer-events: none;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-500);
    top: -15%;
    left: -15%;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary-500);
    bottom: -15%;
    right: -15%;
    animation-delay: 7s;
}

.orb-3 {
    width: 450px;
    height: 450px;
    background: var(--accent-cyan);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
    25% { transform: translate(60px, 60px) rotate(90deg) scale(1.1); }
    50% { transform: translate(-40px, 100px) rotate(180deg) scale(0.9); }
    75% { transform: translate(-100px, -60px) rotate(270deg) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 1000px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.75rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: 2.5rem;
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.hero-badge i {
    color: var(--accent-orange);
    animation: starPulse 2s ease-in-out infinite;
}

@keyframes starPulse {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.2) rotate(180deg); }
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 900;
    margin-bottom: 2rem;
    line-height: 1.15;
    letter-spacing: -1.5px;
}

.typing-effect {
    display: inline-block;
    min-width: 400px;
    text-align: left;
}

.cursor {
    opacity: 1;
    animation: blink 1s step-end infinite;
    color: var(--primary-500);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.125rem 2.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn:hover .btn-shine {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: white;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.5);
}

.btn-glow {
    animation: btnGlow 2s ease-in-out infinite;
}

@keyframes btnGlow {
    0%, 100% { box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4); }
    50% { box-shadow: 0 6px 30px rgba(99, 102, 241, 0.6), 0 0 40px rgba(99, 102, 241, 0.3); }
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 2px solid var(--primary-500);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--primary-500);
    color: white;
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--glass-border);
}

.btn-outline:hover {
    background: var(--glass-bg);
    border-color: var(--primary-500);
    color: var(--primary-500);
    transform: translateY(-4px);
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: var(--text-sm);
}

.trusted-by {
    margin-bottom: 3rem;
}

.trusted-by p {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    margin-bottom: 1rem;
}

.university-logos {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.university-badge {
    padding: 0.5rem 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--text-primary);
}

/* Stats Container */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem 1.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.stat-item:hover::before {
    opacity: 1;
}

.stat-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.25);
}

.stat-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-radius: var(--radius-lg);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.stat-content {
    text-align: center;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.stat-growth {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.8rem;
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
}

.stat-growth.success {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-500);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    opacity: 0.7;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--text-secondary);
    border-radius: 20px;
    position: relative;
    margin: 0 auto 0.5rem;
}

.mouse-wheel {
    width: 4px;
    height: 10px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(15px); opacity: 0; }
}

.scroll-indicator p {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

/* Achievement Badges */
.achievement-badges {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.achievement-badge {
    padding: 1.25rem 1.75rem;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #000;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.5);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideInLeft 0.5s ease, shake 0.5s ease 0.5s;
}

@keyframes slideInLeft {
    from { transform: translateX(-400px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    25% { transform: translateX(-10px) rotate(-5deg); }
    50% { transform: translateX(10px) rotate(5deg); }
    75% { transform: translateX(-10px) rotate(-3deg); }
}

.achievement-badge i {
    font-size: 2.5rem;
}

.achievement-content h4 {
    font-size: var(--text-base);
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.achievement-content p {
    font-size: var(--text-sm);
    opacity: 0.85;
}

/* ========================================
   SECTIONS
======================================== */
.section {
    padding: 6rem 0;
    position: relative;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    color: var(--primary-500);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Due to length constraints, I'll continue with the remaining CSS including:
- Features Section
- Filters
- Cards
- Testimonials
- FAQ
- Team
- Contact
- Footer
- Modals
- Responsive Design
Would you like me to continue with the remaining CSS and then the JavaScript file? */

/* ========================================
   FEATURES SECTION
======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    padding: 2.5rem;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 45px rgba(99, 102, 241, 0.2);
}

.feature-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-radius: var(--radius-lg);
    font-size: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: rotateY(360deg);
}

.feature-card h3 {
    font-size: var(--text-2xl);
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.feature-list li i {
    color: var(--accent-green);
    font-size: 1rem;
}

/* Quick Stats Bar */
.quick-stats-bar {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    padding: 3rem 0;
    margin: 3rem 0;
}

.quick-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.quick-stat {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: white;
}

.quick-stat i {
    font-size: 3rem;
    opacity: 0.9;
}

.quick-stat h3 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.quick-stat p {
    font-size: var(--text-sm);
    opacity: 0.9;
}

/* Filters */
.filter-container {
    padding: 2rem;
    margin-bottom: 3rem;
}

.filter-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.75rem 1.75rem;
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.filter-tab:hover {
    border-color: var(--primary-500);
    color: var(--primary-500);
    transform: translateY(-2px);
}

.filter-tab.active {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-color: transparent;
}

.filter-dropdowns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.custom-select {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-primary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Cpath fill='%236366f1' d='M7 10L2 5h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.custom-select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--bg-tertiary);
}

.custom-select:hover:not(:disabled) {
    border-color: var(--primary-500);
}

.custom-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.search-box {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-primary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.search-box i {
    color: var(--text-secondary);
    font-size: 1.25rem;
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--text-primary);
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-tertiary);
}

.search-clear {
    width: 28px;
    height: 28px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.search-clear:hover {
    background: var(--accent-red);
    color: white;
}

.filter-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.view-toggle {
    width: 45px;
    height: 45px;
    background: var(--bg-primary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.view-toggle:hover,
.view-toggle.active {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

.filter-reset {
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

/* ========================================
   CARD THUMBNAILS
======================================== */
.card-thumbnail {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    position: relative;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
}

.card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.course-card:hover .card-thumbnail img,
.note-card:hover .card-thumbnail img {
    transform: scale(1.1);
}

.card-thumbnail::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        transparent 50%,
        rgba(0, 0, 0, 0.3) 100%
    );
    pointer-events: none;
}

.thumbnail-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 2;
}

.course-card:hover .thumbnail-overlay,
.note-card:hover .thumbnail-overlay {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.thumbnail-overlay i {
    font-size: 1.5rem;
    color: var(--primary-500);
    margin-left: 3px;
}

.thumbnail-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.4rem 1rem;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.thumbnail-badge.video {
    background: rgba(255, 0, 0, 0.9);
}

.thumbnail-badge.pdf {
    background: rgba(220, 38, 38, 0.9);
}

.thumbnail-badge.ppt {
    background: rgba(249, 115, 22, 0.9);
}

.thumbnail-badge.document {
    background: rgba(59, 130, 246, 0.9);
}

.thumbnail-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
}

.thumbnail-placeholder i {
    font-size: 4rem;
    opacity: 0.3;
}

/* Duration Badge for Videos */
.video-duration {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    padding: 0.3rem 0.7rem;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 700;
    font-family: var(--font-mono);
    z-index: 2;
}

/* Responsive Thumbnails */
@media (max-width: 768px) {
    .card-thumbnail {
        height: 180px;
    }
}

@media (max-width: 480px) {
    .card-thumbnail {
        height: 160px;
    }
}

.filter-reset:hover {
    background: var(--accent-red);
    color: white;
    border-color: var(--accent-red);
}

/* Cards Grid */
.courses-grid,
.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-bottom: 4rem;
}

.course-card,
.note-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.course-card::before,
.note-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.course-card:hover::before,
.note-card:hover::before {
    transform: scaleX(1);
}

.course-card:hover,
.note-card:hover {
    transform: translateY(-12px) rotate(2deg);
    box-shadow: 0 15px 50px rgba(99, 102, 241, 0.25);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.card-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-radius: var(--radius-md);
    font-size: 1.75rem;
    box-shadow: var(--shadow-md);
}

.card-badge {
    padding: 0.4rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-500);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.card-description {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.card-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.meta-item i {
    color: var(--primary-500);
    font-size: 1rem;
}

.card-footer {
    display: flex;
    gap: 0.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.card-btn {
    flex: 1;
    padding: 0.875rem 1.25rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.card-btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: white;
    box-shadow: var(--shadow-md);
}

.card-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.card-btn-secondary {
    background: transparent;
    color: var(--primary-500);
    border: 2px solid var(--primary-500);
}

.card-btn-secondary:hover {
    background: var(--primary-500);
    color: white;
}

/* Skeleton Loading */
.skeleton-card {
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    height: 400px;
    animation: skeleton 1.5s ease-in-out infinite;
}

@keyframes skeleton {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-top: 4rem;
    flex-wrap: wrap;
}

.page-btn {
    min-width: 45px;
    height: 45px;
    padding: 0 1rem;
    border: 2px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-btn:hover:not(:disabled) {
    border-color: var(--primary-500);
    background: var(--primary-500);
    color: white;
    transform: translateY(-2px);
}

.page-btn.active {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-color: transparent;
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========================================
   ROADMAP SECTION (Continued in next part)
======================================== */

/* ========================================
   ROADMAP SECTION
======================================== */
.roadmap-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.roadmap-container::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-full);
    opacity: 0.3;
}

.roadmap-step {
    padding: 2.5rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    transition: all var(--transition-normal);
    position: relative;
}

.roadmap-step.active {
    border: 2px solid var(--primary-500);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.roadmap-step:hover {
    transform: translateX(15px);
    box-shadow: 0 12px 35px rgba(99, 102, 241, 0.25);
}

.step-number {
    position: relative;
    z-index: 2;
    flex-shrink: 0;
}

.step-number span {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 800;
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.roadmap-step.active .step-number span {
    animation: pulse-ring 2s ease-in-out infinite;
}

@keyframes pulse-ring {
    0% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.7); }
    50% { box-shadow: 0 0 0 20px rgba(99, 102, 241, 0); }
    100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

.step-connector {
    position: absolute;
    top: 70px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 80px;
    background: var(--glass-border);
}

.step-content {
    flex: 1;
}

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.step-content h3 {
    font-size: var(--text-2xl);
    margin-bottom: 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.step-badge {
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
}

.step-badge.completed {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.step-badge.in-progress {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
}

.step-badge.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-500);
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.step-badge.upcoming {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-orange);
}

.step-badge.locked {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-tertiary);
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.step-topics {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.topic-tag {
    padding: 0.5rem 1rem;
    background: var(--glass-bg-dark);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast);
}

.topic-tag:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-500);
    transform: translateY(-2px);
}

.step-progress {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-full);
    transition: width 1s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShine 2s ease-in-out infinite;
}

@keyframes progressShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--text-xs);
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ========================================
   TESTIMONIALS SECTION
======================================== */
.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.testimonial-card {
    padding: 2.5rem;
    transition: all var(--transition-normal);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 1rem;
    font-size: 6rem;
    color: var(--primary-500);
    opacity: 0.1;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.2);
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
}

.testimonial-rating i {
    color: var(--accent-orange);
    font-size: 1.25rem;
}

.testimonial-text {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-500);
    flex-shrink: 0;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-size: var(--text-base);
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.author-info p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.author-university {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-500);
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: 600;
}

.testimonial-navigation {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.testimonial-nav-btn {
    width: 50px;
    height: 50px;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.testimonial-nav-btn:hover {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
    transform: scale(1.1);
}

.testimonial-dots {
    display: flex;
    gap: 0.75rem;
}

.testimonial-dot {
    width: 12px;
    height: 12px;
    background: var(--glass-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.testimonial-dot.active {
    background: var(--primary-500);
    transform: scale(1.3);
}

/* ========================================
   FAQ SECTION
======================================== */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.faq-item {
    padding: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-question {
    padding: 1.75rem 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-fast);
    user-select: none;
}

.faq-question:hover {
    background: rgba(99, 102, 241, 0.05);
}

.faq-question h3 {
    font-size: var(--text-lg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0;
    font-weight: 600;
}

.faq-question i {
    color: var(--primary-500);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-question i {
    transform: rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 2rem 2rem 2rem;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: var(--text-base);
}

/* ========================================
   TEAM SECTION
======================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.team-card {
    height: 520px;
    perspective: 1500px;
}

.flip-card {
    width: 100%;
    height: 100%;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.team-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.flip-card-front {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
}

.flip-card-back {
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
    color: white;
    transform: rotateY(180deg);
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.team-image {
    height: 300px;
    position: relative;
    overflow: visible; /* circular image hide na ho isliye */
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Circular Image */
.team-image img {
    width: 270px;            /* size adjust kar sakte ho */
    height: 270px;
    border-radius: 50%;      /* makes it round */
    object-fit: cover;
    border: 6px solid #ffffff;   /* white ring around image */
    box-shadow: 0 10px 25px rgba(0,0,0,0.18);
    transition: transform var(--transition-slow);
}

/* Hover Zoom */
.team-card:hover .team-image img {
    transform: scale(1.08);
}

}

.team-card:hover .team-image img {
    transform: scale(1.1);
}

.team-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
}

.team-social {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    opacity: 0;
    transform: translateX(20px);
    transition: all var(--transition-normal);
}

.team-card:hover .team-social {
    opacity: 1;
    transform: translateX(0);
}

.social-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary-500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background: var(--primary-500);
    color: white;
    transform: scale(1.15);
}

.team-info {
    padding: 2rem;
    text-align: center;
}

.team-info h3 {
    font-size: var(--text-2xl);
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 700;
}

.team-role {
    color: var(--primary-500);
    font-weight: 600;
    font-size: var(--text-base);
    margin-bottom: 1rem;
}

.team-expertise {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.expertise-tag {
    padding: 0.35rem 0.9rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-500);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
}

.flip-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: 1rem;
}

.flip-indicator i {
    animation: rotate 3s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.flip-card-back h3 {
    font-size: var(--text-2xl);
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 700;
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.team-stat {
    text-align: center;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.team-stat i {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
    display: block;
}

.team-stat strong {
    display: block;
    font-size: var(--text-xl);
    margin-bottom: 0.25rem;
    font-weight: 800;
}

.team-stat span {
    font-size: var(--text-xs);
    opacity: 0.95;
}

.team-tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.tag {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.team-bio {
    text-align: center;
    line-height: 1.8;
    opacity: 0.95;
    font-size: var(--text-base);
    margin-bottom: 1.5rem;
}

.team-contact {
    display: flex;
    justify-content: center;   /* Center the button */
    width: 100%;
}

.team-contact .contact-btn {
    width: 50%;
    padding: 0.7rem 1rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    color: var(--primary-600);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 999px;       /* FULL ROUND SHAPE */
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;    /* icon + text centered */
    gap: 0.5rem;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.team-contact .contact-btn:hover {
    transform: translateY(-3px);
    background: white;
    box-shadow: 0 8px 22px rgba(0,0,0,0.12);
}

.team-contact .contact-btn:active {
    transform: scale(0.96);
}



.team-contact .contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

/* ========================================
   CONTACT SECTION
======================================== */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    max-width: 1100px;
    margin: 0 auto;
}

.contact-info {
    padding: 3rem;
}

.contact-info h3 {
    font-size: var(--text-2xl);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
}

.contact-intro {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--glass-border);
}

.contact-item:last-of-type {
    border-bottom: none;
}

.contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: white;
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.contact-details strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: var(--text-base);
}

.contact-details a {
    color: var(--primary-500);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.contact-details a:hover {
    color: var(--primary-700);
    text-decoration: underline;
}

.contact-details p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.contact-note {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: 0.5rem;
}

.social-links h4 {
    font-size: var(--text-lg);
    margin: 2rem 0 1.5rem;
    color: var(--text-primary);
}

.social-icons-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--bg-primary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.social-link:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.social-link.facebook:hover {
    background: #1877f2;
    color: white;
    border-color: #1877f2;
}

.social-link.twitter:hover {
    background: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.social-link.linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.social-link.instagram:hover {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    color: white;
    border-color: transparent;
}

.social-link.youtube:hover {
    background: #ff0000;
    color: white;
    border-color: #ff0000;
}

.social-link.github:hover {
    background: #333;
    color: white;
    border-color: #333;
}

.contact-form {
    padding: 3rem;
}

.contact-form h3 {
    font-size: var(--text-2xl);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-primary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
    line-height: 1.7;
}

.form-error {
    display: block;
    color: var(--accent-red);
    font-size: var(--text-xs);
    margin-top: 0.5rem;
}

.character-count {
    display: block;
    text-align: right;
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    margin-top: 0.5rem;
}

/* Newsletter Section */
.newsletter-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-600), var(--secondary-600));
}

.newsletter-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    padding: 3rem;
}

.newsletter-text {
    color: white;
}

.newsletter-text h2 {
    font-size: var(--text-3xl);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 800;
}

.newsletter-text p {
    font-size: var(--text-lg);
    opacity: 0.95;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    min-width: 450px;
}

.newsletter-form input {
    flex: 1;
    padding: 1.125rem 1.5rem;
    background: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--text-primary);
}

.newsletter-form input:focus {
    outline: none;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
}

/* ========================================
   FOOTER
======================================== */
.footer {
    padding: 4rem 2rem 2rem;
    margin-top: 6rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(4, 1fr);
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 700;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--primary-500);
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-500);
    color: white;
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 1rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--text-sm);
}

.footer-section ul li a:hover {
    color: var(--primary-500);
    transform: translateX(5px);
}

.footer-section ul li a i {
    font-size: 0.8rem;
    color: var(--primary-500);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-contact li i {
    color: var(--primary-500);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

.footer-bottom {
    padding-top: 2.5rem;
    border-top: 2px solid var(--glass-border);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.footer-bottom i.fa-heart {
    color: var(--secondary-500);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    10%, 30% { transform: scale(1.2); }
    20%, 40% { transform: scale(1); }
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-500);
}

.footer-links span {
    color: var(--text-tertiary);
}

/* ========================================
   MODALS
======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: 2rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal.active {
    display: flex;
}

.modal-content {
    max-width: 700px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-large {
    max-width: 1000px;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-bottom: 1px solid var(--glass-border);
}

.modal-header h2 {
    font-size: var(--text-2xl);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
}

.modal-close {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--accent-red);
    color: white;
    transform: rotate(90deg);
}

.modal-body {
    padding: 2.5rem 2rem;
}

.help-section {
    margin-bottom: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.help-section:last-child {
    border-bottom: none;
}

.help-section h3 {
    font-size: var(--text-xl);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-500);
    font-weight: 700;
}

.help-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.help-section ul {
    list-style: none;
    padding-left: 1.5rem;
}

.help-section ul li {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    position: relative;
}

.help-section ul li::before {
    content: '→';
    position: absolute;
    left: -1.5rem;
    color: var(--primary-500);
    font-weight: bold;
}

.achievement-showcase {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.mini-badge {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border: 1px solid var(--primary-500);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 600;
}

.help-contact {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.share-description {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.share-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.share-btn {
    padding: 1.25rem;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
    font-weight: 600;
    color: var(--text-primary);
}

.share-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.share-btn.whatsapp:hover {
    background: #25d366;
    color: white;
    border-color: #25d366;
}

.share-btn.facebook:hover {
    background: #1877f2;
    color: white;
    border-color: #1877f2;
}

.share-btn.twitter:hover {
    background: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.share-btn.telegram:hover {
    background: #0088cc;
    color: white;
    border-color: #0088cc;
}

.share-btn.linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.share-btn.copy:hover {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

.share-btn i {
    font-size: 2rem;
}

.share-link-container {
    display: flex;
    gap: 1rem;
}

.share-link-container input {
    flex: 1;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--text-primary);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-md);
}

/* ========================================
   NOTIFICATIONS
======================================== */
.notification-container {
    position: fixed;
    top: 100px;
    right: 2rem;
    z-index: var(--z-notification);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
}

.notification {
    padding: 1.25rem 1.75rem;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow-lg);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    min-width: 350px;
    animation: slideInRight 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInRight {
    from {
        transform: translateX(500px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification i {
    font-size: 1.75rem;
    flex-shrink: 0;
}

.notification.success {
    border-left: 4px solid var(--accent-green);
}

.notification.success i {
    color: var(--accent-green);
}

.notification.error {
    border-left: 4px solid var(--accent-red);
}

.notification.error i {
    color: var(--accent-red);
}

.notification.info {
    border-left: 4px solid var(--accent-blue);
}

.notification.info i {
    color: var(--accent-blue);
}

.notification span {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */
@media (max-width: 1200px) {
    .nav-menu {
        gap: 0.25rem;
    }
    
    .nav-link {
        padding: 0.65rem 1rem;
        font-size: var(--text-sm);
    }
    
    .mega-menu-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        position: fixed;
        top: 85px;
        left: -100%;
        width: 100%;
        max-width: 450px;
        height: calc(100vh - 85px);
        background: var(--glass-bg);
        backdrop-filter: blur(30px);
        flex-direction: column;
        padding: 2.5rem;
        transition: left var(--transition-normal);
        box-shadow: var(--glass-shadow-lg);
        overflow-y: auto;
        align-items: flex-start;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .newsletter-content {
        flex-direction: column;
        text-align: center;
    }
    
    .newsletter-form {
        min-width: 100%;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --text-xs: 0.7rem;
        --text-sm: 0.8rem;
        --text-base: 0.9rem;
    }
    
    .hero {
        padding: 6rem 1.5rem 4rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-dropdowns {
        grid-template-columns: 1fr;
    }
    
    .courses-grid,
    .notes-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .share-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .notification {
        min-width: 300px;
    }
    
    .notification-container {
        right: 1rem;
        left: 1rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 4rem 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .typing-effect {
        min-width: 250px;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .icon-btn {
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
    }
    
    .streak-badge {
        padding: 0.4rem 1rem;
        font-size: 0.75rem;
    }
    
    .filter-tabs {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .quick-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .achievement-badges {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }
    
    .scroll-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 50px;
        height: 50px;
    }
}

/* ========================================
   PRINT STYLES
======================================== */
@media print {
    .navbar,
    .hero,
    .filter-container,
    .footer,
    .modal,
    .notification-container,
    .achievement-badges,
    .progress-bar,
    .scroll-to-top,
    .particles-container {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .course-card,
    .note-card {
        break-inside: avoid;
        border: 1px solid #ddd;
        margin-bottom: 1rem;
        page-break-inside: avoid;
    }
    
    .section {
        padding: 2rem 0;
    }
}

/* ========================================
   ACCESSIBILITY
======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Visible for Keyboard Navigation */
*:focus-visible {
    outline: 3px solid var(--primary-500);
    outline-offset: 3px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --glass-bg: rgba(255, 255, 255, 0.95);
        --glass-border: rgba(0, 0, 0, 0.3);
    }
    
    [data-theme="dark"] {
        --glass-bg: rgba(0, 0, 0, 0.95);
        --glass-border: rgba(255, 255, 255, 0.3);
    }
}