/* ========================================
   CSS Variables & Reset
   ======================================== */

:root {
    /* Arka Sync Theme Colors */
    --primary: #5093f7;
    --primary-dark: #3b7dd8;
    --primary-light: #7ab3ff;
    --secondary: #142a54;
    --secondary-dark: #0c1a35;
    --accent: #f59e0b;
    --accent-secondary: #eab308;
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    
    --border-color: #e2e8f0;
    --border-radius: 16px;
    --border-radius-lg: 24px;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    color: var(--text-primary);
}

p {
    margin-bottom: var(--spacing-md);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ========================================
   Navigation Bar
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.brand-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    transition: var(--transition);
}

.brand-link:hover {
    color: var(--primary);
    transform: scale(1.05);
}

.brand-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
    transition: var(--transition);
}

.brand-link:hover .brand-logo {
    transform: scale(1.1) rotate(5deg);
}

.brand-icon {
    font-size: 1.5rem;
    animation: float 3s ease-in-out infinite;
}

.brand-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-divider {
    color: var(--border-color);
    font-weight: 300;
    font-size: 1.5rem;
}

.nav-event {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    position: relative;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link-external svg {
    opacity: 0.6;
    transition: var(--transition);
}

.nav-link-external:hover svg {
    opacity: 1;
    transform: translate(2px, -2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu-toggle:hover span {
    background: var(--primary);
}

/* Add padding to body to account for fixed navbar */
body {
    padding-top: 80px;
}

/* ========================================
   Hero Section - Enhanced Modern Design
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: var(--spacing-2xl) 0 calc(var(--spacing-2xl) + 4rem);
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        #5093f7 0%, 
        #3b7dd8 25%,
        #142a54 50%,
        #eab308 75%,
        #f59e0b 100%
    );
    opacity: 1;
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(245, 158, 11, 0.1) 0%, transparent 50%),
        url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.03"><path d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/></g></g></svg>');
    opacity: 0.5;
    animation: patternMove 60s linear infinite;
}

@keyframes patternMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.floating-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
    filter: blur(40px);
    animation: floatShape 20s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #fff 0%, #5093f7 100%);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #f59e0b 0%, #eab308 100%);
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #142a54 0%, #5093f7 100%);
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

.shape-4 {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    top: 30%;
    right: 30%;
    animation-delay: 6s;
}

.shape-5 {
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(245,158,11,0.3) 0%, transparent 70%);
    bottom: 40%;
    right: 10%;
    animation-delay: 8s;
}

@keyframes floatShape {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.1);
    }
    50% {
        transform: translate(-20px, 20px) scale(0.9);
    }
    75% {
        transform: translate(40px, 10px) scale(1.05);
    }
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-content {
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.15);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.badge-pulse {
    position: absolute;
    top: 50%;
    right: 1rem;
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.badge-pulse::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid #10b981;
    border-radius: 50%;
    animation: pulseRing 2s ease-in-out infinite;
}

@keyframes pulseRing {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.title-highlight {
    position: relative;
    display: inline-block;
}

.highlight-text {
    position: relative;
    z-index: 1;
}

.highlight-underline {
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 12px;
    color: #f59e0b;
    opacity: 0.8;
    animation: drawUnderline 2s ease-out 0.5s both;
}

@keyframes drawUnderline {
    from {
        stroke-dasharray: 300;
        stroke-dashoffset: 300;
    }
    to {
        stroke-dasharray: 300;
        stroke-dashoffset: 0;
    }
}

.title-collab {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: 2.5rem;
    background: linear-gradient(135deg, #fff 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(245, 158, 11, 0.3));
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 120px;
    text-align: center;
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: #f59e0b;
    text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
}

.stat-label {
    font-size: 0.875rem;
    color: #ffffff;
    margin-top: 0.25rem;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

/* Hero Visual Section */
.hero-visual {
    position: relative;
}

.visual-container {
    position: relative;
    width: 100%;
    height: 600px;
}

.visual-main {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.hero-logo {
    width: 300px;
    height: 300px;
    object-fit: contain;
    filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.3));
    animation: floatLogo 6s ease-in-out infinite;
}

@keyframes floatLogo {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(80, 147, 247, 0.3) 0%, transparent 70%);
    animation: glowPulse 4s ease-in-out infinite;
    z-index: 1;
}

@keyframes glowPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.8;
    }
}

/* Tech Cards Around Logo */
.tech-cards {
    position: absolute;
    inset: 0;
}

.tech-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    min-width: 120px;
    transition: var(--transition);
    animation: float 4s ease-in-out infinite;
}

.tech-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.tech-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 12px;
    color: white;
}

.tech-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
}

.tech-card-1 {
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.tech-card-2 {
    top: 20%;
    right: 10%;
    animation-delay: 1s;
}

.tech-card-3 {
    bottom: 25%;
    left: 8%;
    animation-delay: 2s;
}

.tech-card-4 {
    bottom: 15%;
    right: 5%;
    animation-delay: 3s;
}

/* Code Snippet */
.code-snippet {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 500px;
    background: rgba(15, 23, 42, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(80, 147, 247, 0.3);
}

.snippet-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(20, 42, 84, 0.5);
    border-bottom: 1px solid rgba(80, 147, 247, 0.2);
}

.snippet-dots {
    display: flex;
    gap: 6px;
}

.snippet-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
}

.snippet-dots span:nth-child(1) { background: #ef4444; }
.snippet-dots span:nth-child(2) { background: #f59e0b; }
.snippet-dots span:nth-child(3) { background: #10b981; }

.snippet-title {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    font-family: 'Courier New', monospace;
}

.snippet-code {
    padding: var(--spacing-md);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: #e2e8f0;
}

.code-keyword { color: #f59e0b; }
.code-variable { color: #5093f7; }
.code-property { color: #10b981; }
.code-string { color: #eab308; }
.code-number { color: #ec4899; }
.code-boolean { color: #8b5cf6; }
.code-cursor {
    color: #5093f7;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(80, 147, 247, 0.5),
                    0 0 10px rgba(80, 147, 247, 0.3),
                    0 0 15px rgba(80, 147, 247, 0.2);
    }
    50% {
        box-shadow: 0 0 10px rgba(80, 147, 247, 0.8),
                    0 0 20px rgba(80, 147, 247, 0.6),
                    0 0 30px rgba(80, 147, 247, 0.4);
    }
}

/* Wave Divider */
.wave-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.wave-divider svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
}

.wave-divider .wave-flipped {
    transform: scaleY(-1);
}

.wave-divider path {
    fill: var(--bg-secondary);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-game {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.btn-game:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   Introduction Section
   ======================================== */

.intro-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.intro-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: wave 2s ease-in-out infinite;
}

@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(20deg); }
    75% { transform: rotate(-20deg); }
}

.intro-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.intro-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================
   BOOTCAMP MATERIALS SECTION - COMPLETELY NEW STYLING
   ========================================== */

.bootcamp-materials-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8eef7 100%);
    position: relative;
    overflow: hidden;
}

.bootcamp-materials-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(80, 147, 247, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.bootcamp-materials-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 25s ease-in-out infinite reverse;
}

.bootcamp-material-card {
    background: white;
    border-radius: 24px;
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.bootcamp-material-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: 24px 0 0 24px;
}

.bootcamp-material-card:hover {
    box-shadow: 0 12px 40px rgba(80, 147, 247, 0.15), 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-6px);
    border-color: rgba(80, 147, 247, 0.3);
}

.bootcamp-material-card:hover::before {
    opacity: 1;
}

.bootcamp-material-card.active {
    border-color: rgba(80, 147, 247, 0.4);
    box-shadow: 0 8px 32px rgba(80, 147, 247, 0.2), 0 2px 8px rgba(0, 0, 0, 0.06);
}

.bootcamp-material-card.active::before {
    opacity: 1;
}

.bootcamp-lesson-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) var(--spacing-2xl);
    cursor: pointer;
    background: linear-gradient(135deg, #ffffff 0%, #fafbff 100%);
    border-bottom: 1px solid rgba(80, 147, 247, 0.08);
    transition: all 0.3s ease;
    position: relative;
    border-radius: 24px 24px 0 0;
}

.bootcamp-lesson-header:hover {
    background: linear-gradient(135deg, #fafbff 0%, #f0f4ff 100%);
}

.bootcamp-lesson-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
    transition: width 0.4s ease;
}

.bootcamp-material-card:hover .bootcamp-lesson-header::after {
    width: 100%;
}

.lesson-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    border-radius: 16px;
    color: #fbbf24;
    font-size: 1.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(30, 64, 175, 0.3);
}

.bootcamp-material-card:hover .lesson-icon-wrapper {
    transform: scale(1.1) rotate(8deg);
    background: linear-gradient(135deg, #3a7dd6 0%, #2563eb 100%);
    color: white;
    box-shadow: 0 6px 20px rgba(80, 147, 247, 0.45);
}

.lesson-number-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    border-radius: 16px;
    font-weight: 800;
    font-size: 1.25rem;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.lesson-number-badge::before {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 18px;
    border: 3px solid #f59e0b;
    opacity: 0;
    animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.bootcamp-material-card:hover .lesson-number-badge {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.15);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

.lesson-title-wrapper {
    flex: 1;
}

.lesson-main-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: color 0.3s ease;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.lesson-emoji {
    font-size: 1.75rem;
    display: inline-block;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.bootcamp-material-card:hover .lesson-emoji {
    transform: scale(1.25) rotate(12deg);
}

.bootcamp-material-card:hover .lesson-main-title {
    color: var(--color-primary);
}

.lesson-subtitle-text {
    font-size: 1rem;
    color: #475569;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
}

.lesson-subtitle-text i {
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: normal;
}

.lesson-toggle-button {
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.12) 0%, rgba(80, 147, 247, 0.08) 100%);
    border: 2px solid rgba(80, 147, 247, 0.2);
    cursor: pointer;
    padding: var(--spacing-sm);
    color: var(--color-primary);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    border-radius: 14px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(80, 147, 247, 0.15);
}

.lesson-toggle-button:hover {
    background: linear-gradient(135deg, var(--color-primary) 0%, #3a7dd6 100%);
    color: white;
    border-color: var(--color-primary);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(80, 147, 247, 0.3);
}

.lesson-toggle-button svg {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.bootcamp-material-card.active .lesson-toggle-button {
    background: linear-gradient(135deg, var(--color-primary) 0%, #3a7dd6 100%);
    color: white;
    border-color: var(--color-primary);
}

.bootcamp-material-card.active .lesson-toggle-button svg {
    transform: rotate(180deg);
}

/* CRITICAL: Content Visibility with New Classes */
.bootcamp-lesson-content {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    max-height: 0 !important;
    overflow: hidden !important;
    padding: 0 var(--spacing-2xl) !important;
    background: white !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 0 24px 24px;
}

.bootcamp-material-card.active .bootcamp-lesson-content {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    max-height: none !important;
    overflow: visible !important;
    padding: var(--spacing-2xl) !important;
    animation: slideDown 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lesson-intro-description {
    font-size: 1.125rem;
    line-height: 1.85;
    color: #1e293b;
    margin: 0 0 var(--spacing-2xl) 0;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.08) 0%, rgba(80, 147, 247, 0.03) 100%);
    border-left: 5px solid var(--color-primary);
    border-radius: 16px;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    box-shadow: 0 2px 12px rgba(80, 147, 247, 0.08);
    transition: all 0.3s ease;
    font-weight: 500;
}

.lesson-intro-description:hover {
    box-shadow: 0 4px 16px rgba(80, 147, 247, 0.15);
    transform: translateX(6px);
}

.lesson-intro-description i {
    color: #f59e0b;
    font-size: 1.5rem;
    margin-top: 2px;
    flex-shrink: 0;
}

/* Learning Resource Groups */
.learning-resource-group {
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.7s ease-out forwards;
    opacity: 0;
}

.learning-resource-group:nth-child(2) {
    animation-delay: 0.15s;
}

.learning-resource-group:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(25px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.learning-resource-group:last-child {
    margin-bottom: 0;
}

.resource-category-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.375rem;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 var(--spacing-xl) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.08) 0%, rgba(80, 147, 247, 0.03) 100%);
    border-radius: 14px;
    border-left: 4px solid var(--color-primary);
    position: relative;
    box-shadow: 0 2px 8px rgba(80, 147, 247, 0.1);
}

.category-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    font-size: 1.375rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.15);
}

.category-icon-wrapper.video-icon {
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    color: white;
}

.category-icon-wrapper.article-icon {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
}

.resource-items-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Individual Resource Items */
.learning-resource-item {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: white;
    border: 2px solid rgba(80, 147, 247, 0.12);
    border-radius: 18px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.learning-resource-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #3a7dd6 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    border-radius: 18px;
}

.learning-resource-item:hover::before {
    opacity: 1;
}

.learning-resource-item:hover {
    border-color: var(--color-primary);
    box-shadow: 0 8px 28px rgba(80, 147, 247, 0.3);
    transform: translateX(10px) translateY(-2px);
}

.resource-icon-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 14px;
    font-size: 1.375rem;
    flex-shrink: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.resource-icon-badge.video-badge {
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    color: white;
}

.resource-icon-badge.article-badge {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    border: none;
}

.learning-resource-item:hover .resource-icon-badge {
    transform: scale(1.18) rotate(8deg);
    box-shadow: 0 8px 24px rgba(80, 147, 247, 0.4);
    background: white;
    position: relative;
    z-index: 1;
}

.learning-resource-item:hover .resource-icon-badge.video-badge {
    color: #FF0000;
    border: 2px solid #FF0000;
}

.learning-resource-item:hover .resource-icon-badge.article-badge {
    color: #1e40af;
    border: 2px solid #3b82f6;
}

.resource-details-box {
    flex: 1;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.resource-item-title {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    font-size: 1.125rem;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 0.75rem 0;
    line-height: 1.55;
    transition: color 0.3s ease;
}

.learning-resource-item:hover .resource-item-title {
    position: relative;
    z-index: 1;
}

.resource-author-name {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.938rem;
    font-style: italic;
    color: #475569;
    margin: 0 0 1rem 0;
    font-weight: 500;
}

.resource-author-name i {
    color: var(--color-primary);
    font-size: 1.125rem;
    font-style: normal;
}

.learning-resource-item:hover .resource-author-name {
    position: relative;
    z-index: 1;
}

.resource-reason-text {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: 1rem;
    color: #334155;
    line-height: 1.75;
    margin: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.08) 0%, rgba(245, 158, 11, 0.05) 100%);
    border-radius: 12px;
    border: 1px solid rgba(80, 147, 247, 0.15);
    font-weight: 500;
}

.resource-reason-text i {
    color: #f59e0b;
    margin-top: 0;
    flex-shrink: 0;
    font-size: 1.125rem;
}

.resource-reason-text strong {
    color: #0f172a;
    font-weight: 700;
}

.learning-resource-item:hover .resource-reason-text {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
    position: relative;
    z-index: 1;
}

.learning-resource-item:hover .resource-reason-text i {
    color: white;
}

.learning-resource-item:hover .resource-reason-text strong {
    color: white;
}

.resource-action-button {
    display: inline-flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 14px 28px;
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.12) 0%, rgba(58, 125, 214, 0.18) 100%);
    color: #1a1a1a;
    text-decoration: none;
    border-radius: 14px;
    font-weight: 650;
    font-size: 1rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    flex-shrink: 0;
    box-shadow: 0 4px 16px rgba(80, 147, 247, 0.25);
    position: relative;
    overflow: hidden;
    border: 2px solid rgba(80, 147, 247, 0.3);
}

.resource-action-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #3a7dd6 100%);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
    z-index: 0;
}

.resource-action-button:hover::before {
    width: 400px;
    height: 400px;
}

.resource-action-button:hover {
    color: white;
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 10px 28px rgba(80, 147, 247, 0.5);
    border-color: var(--color-primary);
}

.learning-resource-item:hover .resource-action-button {
    background: white;
    color: var(--color-primary);
    border-color: white;
    box-shadow: 0 4px 16px rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 1;
}

.learning-resource-item:hover .resource-action-button::before {
    display: none;
}

.resource-action-button i {
    font-size: 1.25rem;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
}

.resource-action-button:hover i {
    transform: scale(1.25);
}

.resource-action-button span {
    position: relative;
    z-index: 1;
}

.resource-action-button svg {
    width: 16px;
    height: 16px;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
}

.resource-action-button:hover svg {
    transform: translateX(4px);
}

/* Responsive Design for Bootcamp Materials */
@media (max-width: 768px) {
    .bootcamp-materials-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    /* Card Redesign for Mobile */
    .bootcamp-material-card {
        border-radius: 24px;
        margin-bottom: var(--spacing-xl);
        background: white;
        border: 2px solid rgba(80, 147, 247, 0.2);
        box-shadow: 
            0 4px 20px rgba(80, 147, 247, 0.12),
            0 2px 8px rgba(0, 0, 0, 0.05);
    }
    
    .bootcamp-material-card::before {
        border-radius: 24px 0 0 24px;
    }
    
    /* Header - More Compact & Clear */
    .bootcamp-lesson-header {
        padding: var(--spacing-lg);
        gap: var(--spacing-sm);
        border-radius: 24px 24px 0 0;
        flex-wrap: wrap;
        background: linear-gradient(135deg, #f8faff 0%, #ffffff 100%);
        position: relative;
    }
    
    /* Icons with Better Contrast */
    .lesson-icon-wrapper {
        width: 56px;
        height: 56px;
        font-size: 1.75rem;
        border-radius: 16px;
        flex-shrink: 0;
        background: linear-gradient(135deg, var(--color-primary) 0%, #3a7dd6 100%);
        color: white;
        box-shadow: 0 4px 16px rgba(80, 147, 247, 0.3);
    }
    
    .lesson-number-badge {
        width: 56px;
        height: 56px;
        font-size: 1.5rem;
        border-radius: 16px;
        flex-shrink: 0;
        background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
        color: white;
        font-weight: 800;
        box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
    }
    
    .lesson-title-wrapper {
        width: 100%;
        margin-top: var(--spacing-md);
        order: 3;
    }
    
    .lesson-main-title {
        font-size: 1.375rem;
        line-height: 1.4;
        color: #0f172a;
        font-weight: 700;
    }
    
    .lesson-subtitle-text {
        font-size: 1rem;
        color: #475569;
        font-weight: 500;
    }
    
    .lesson-subtitle-text i {
        color: var(--color-primary);
        font-size: 1.125rem;
    }
    
    .lesson-emoji {
        font-size: 1.75rem;
    }
    
    .lesson-toggle-button {
        width: 56px;
        height: 56px;
        border-radius: 16px;
        flex-shrink: 0;
        background: linear-gradient(135deg, rgba(80, 147, 247, 0.15) 0%, rgba(80, 147, 247, 0.08) 100%);
        border: 2px solid rgba(80, 147, 247, 0.3);
        position: absolute;
        top: var(--spacing-lg);
        right: var(--spacing-lg);
    }
    
    .lesson-toggle-button svg {
        stroke: var(--color-primary);
        stroke-width: 3;
    }
    
    /* Content Area */
    .bootcamp-lesson-content {
        padding: 0 !important;
        border-radius: 0 0 24px 24px;
    }
    
    .bootcamp-material-card.active .bootcamp-lesson-content {
        padding: var(--spacing-lg) !important;
    }
    
    /* Intro Description - Better Readability */
    .lesson-intro-description {
        font-size: 1.063rem;
        line-height: 1.8;
        padding: var(--spacing-lg);
        border-radius: 18px;
        margin-bottom: var(--spacing-lg);
        background: linear-gradient(135deg, rgba(80, 147, 247, 0.08) 0%, rgba(80, 147, 247, 0.03) 100%);
        border-left: 4px solid var(--color-primary);
        color: #1e293b;
    }
    
    .lesson-intro-description i {
        color: #f59e0b;
        font-size: 1.25rem;
        margin-right: var(--spacing-xs);
    }
    
    /* Category Title - Bold & Clear */
    .resource-category-title {
        font-size: 1.25rem;
        padding: var(--spacing-md);
        border-radius: 16px;
        line-height: 1.3;
        background: white;
        border: 2px solid rgba(80, 147, 247, 0.2);
        color: #0f172a;
        font-weight: 700;
        box-shadow: 0 2px 8px rgba(80, 147, 247, 0.1);
    }
    
    .category-icon-wrapper {
        width: 48px;
        height: 48px;
        font-size: 1.5rem;
        border-radius: 14px;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }
    
    .category-icon-wrapper.video-icon {
        background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
        color: white;
    }
    
    .category-icon-wrapper.article-icon {
        background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
        color: white;
    }
    
    /* Resource Items - Card Style */
    .learning-resource-item {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-xl);
        border-radius: 20px;
        align-items: flex-start;
        background: white;
        border: 2px solid rgba(80, 147, 247, 0.15);
        box-shadow: 0 4px 16px rgba(80, 147, 247, 0.12);
    }
    
    .learning-resource-item:hover {
        background: linear-gradient(135deg, var(--color-primary) 0%, #3a7dd6 100%);
        border-color: var(--color-primary);
        box-shadow: 0 8px 32px rgba(80, 147, 247, 0.35);
        transform: translateY(-4px);
    }
    
    /* Icons with White Background on Hover */
    .resource-icon-badge {
        width: 64px;
        height: 64px;
        font-size: 1.875rem;
        border-radius: 16px;
        flex-shrink: 0;
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    }
    
    .resource-icon-badge.video-badge {
        background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
        color: white;
    }
    
    .resource-icon-badge.article-badge {
        background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
        color: white;
    }
    
    .learning-resource-item:hover .resource-icon-badge {
        background: white;
        transform: scale(1.1) rotate(5deg);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    }
    
    .learning-resource-item:hover .resource-icon-badge.video-badge {
        color: #FF0000;
        border: 2px solid #FF0000;
    }
    
    .learning-resource-item:hover .resource-icon-badge.article-badge {
        color: #1e40af;
        border: 2px solid #3b82f6;
    }
    
    .resource-details-box {
        width: 100%;
    }
    
    /* Text - White on Hover */
    .resource-item-title {
        font-size: 1.188rem;
        line-height: 1.5;
        margin-bottom: var(--spacing-sm);
        color: #0f172a;
        font-weight: 700;
    }
    
    .learning-resource-item:hover .resource-item-title {
        color: white;
    }
    
    .resource-author-name {
        font-size: 1rem;
        margin-bottom: var(--spacing-sm);
        color: #64748b;
        font-weight: 500;
    }
    
    .learning-resource-item:hover .resource-author-name {
        color: rgba(255, 255, 255, 0.9);
    }
    
    .resource-author-name i {
        font-size: 1.125rem;
        color: var(--color-primary);
    }
    
    .learning-resource-item:hover .resource-author-name i {
        color: white;
    }
    
    .resource-reason-text {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        font-size: 1rem;
        line-height: 1.8;
        padding: var(--spacing-md);
        border-radius: 14px;
        background: rgba(80, 147, 247, 0.06);
        border: 1px solid rgba(80, 147, 247, 0.15);
        color: #334155;
    }
    
    .learning-resource-item:hover .resource-reason-text {
        background: rgba(255, 255, 255, 0.15);
        border-color: rgba(255, 255, 255, 0.3);
        color: white;
    }
    
    .resource-reason-text i {
        color: #f59e0b;
        margin-top: 0;
        font-size: 1.125rem;
    }
    
    .learning-resource-item:hover .resource-reason-text i {
        color: white;
    }
    
    .resource-reason-text strong {
        color: #0f172a;
        font-weight: 700;
    }
    
    .learning-resource-item:hover .resource-reason-text strong {
        color: white;
    }
    
    /* Button - White Background on Hover */
    .resource-action-button {
        width: 100%;
        justify-content: center;
        padding: 18px 28px;
        border-radius: 16px;
        font-size: 1.125rem;
        margin-top: var(--spacing-sm);
        font-weight: 700;
    }
    
    .learning-resource-item:hover .resource-action-button {
        background: white;
        color: var(--color-primary);
        border-color: white;
        box-shadow: 0 4px 16px rgba(255, 255, 255, 0.3);
    }
    
    .resource-action-button i {
        font-size: 1.5rem;
    }
}

/* Extra small screens - Enhanced readability */
@media (max-width: 480px) {
    .bootcamp-materials-section {
        padding: var(--spacing-lg) var(--spacing-xs);
    }
    
    .bootcamp-material-card {
        border-radius: 20px;
        margin-bottom: var(--spacing-lg);
    }
    
    .bootcamp-lesson-header {
        padding: var(--spacing-md);
        gap: var(--spacing-xs);
        border-radius: 20px 20px 0 0;
        position: relative;
        flex-wrap: wrap;
    }
    
    .lesson-icon-wrapper {
        width: 52px;
        height: 52px;
        font-size: 1.5rem;
        border-radius: 14px;
    }
    
    .lesson-number-badge {
        width: 52px;
        height: 52px;
        font-size: 1.375rem;
        border-radius: 14px;
    }
    
    .lesson-title-wrapper {
        width: 100%;
        margin-top: var(--spacing-sm);
        order: 3;
    }
    
    .lesson-main-title {
        font-size: 1.25rem;
        line-height: 1.5;
    }
    
    .lesson-subtitle-text {
        font-size: 0.938rem;
    }
    
    .lesson-toggle-button {
        width: 52px;
        height: 52px;
        border-radius: 14px;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .bootcamp-lesson-content {
        padding: 0 !important;
        border-radius: 0 0 20px 20px;
    }
    
    .bootcamp-material-card.active .bootcamp-lesson-content {
        padding: var(--spacing-md) !important;
    }
    
    .lesson-intro-description {
        font-size: 1rem;
        line-height: 1.8;
        padding: var(--spacing-md);
        border-radius: 16px;
        margin-bottom: var(--spacing-md);
    }
    
    .lesson-intro-description i {
        font-size: 1.125rem;
    }
    
    .resource-category-title {
        font-size: 1.125rem;
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: 14px;
    }
    
    .category-icon-wrapper {
        width: 44px;
        height: 44px;
        font-size: 1.375rem;
        border-radius: 12px;
    }
    
    .category-icon-wrapper.video-icon {
        background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
        color: white;
    }
    
    .category-icon-wrapper.article-icon {
        background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
        color: white;
    }
    
    .learning-resource-item {
        padding: var(--spacing-lg);
        border-radius: 18px;
        gap: var(--spacing-md);
        background: white;
        border: 2px solid rgba(80, 147, 247, 0.15);
    }
    
    .learning-resource-item:hover {
        transform: translateY(-2px);
    }
    
    .resource-icon-badge {
        width: 58px;
        height: 58px;
        font-size: 1.625rem;
        border-radius: 14px;
    }
    
    .resource-icon-badge.video-badge {
        background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
        color: white;
    }
    
    .resource-icon-badge.article-badge {
        background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
        color: white;
    }
    
    .learning-resource-item:hover .resource-icon-badge {
        background: white;
        transform: scale(1.08);
    }
    
    .learning-resource-item:hover .resource-icon-badge.video-badge {
        color: #FF0000;
        border: 2px solid #FF0000;
    }
    
    .learning-resource-item:hover .resource-icon-badge.article-badge {
        color: #1e40af;
        border: 2px solid #3b82f6;
    }
    
    .resource-item-title {
        font-size: 1.125rem;
        line-height: 1.5;
    }
    
    .resource-author-name {
        font-size: 0.938rem;
    }
    
    .resource-author-name i {
        font-size: 1rem;
    }
    
    .resource-reason-text {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        font-size: 0.938rem;
        line-height: 1.8;
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: 12px;
    }
    
    .resource-reason-text i {
        font-size: 1rem;
        margin-top: 0;
    }
    
    .resource-action-button {
        padding: 16px 24px;
        font-size: 1.063rem;
        border-radius: 14px;
    }
    
    .resource-action-button i {
        font-size: 1.375rem;
    }
}

/* ==========================================
   END BOOTCAMP MATERIALS SECTION
   ========================================== */


/* ========================================
   Materials Section
   ======================================== */

.materials-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ============================================
   MATERIALS SECTION
   ============================================ */

/* Section Container */
.materials-section {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, #ffffff 0%, #f9fafb 100%);
    position: relative;
}

/* Material Cards */
.material-card {
    background: white;
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    position: relative;
}

.material-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.material-card.active {
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(80, 147, 247, 0.15);
}

.material-card.active::after {
    transform: scaleY(1);
}

.material-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateX(5px);
}

/* Material Header */
.material-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    cursor: pointer;
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.03) 0%, rgba(245, 158, 11, 0.03) 100%);
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.material-card.active .material-header {
    border-bottom-color: var(--border-color);
}

.material-header:hover {
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.08) 0%, rgba(245, 158, 11, 0.08) 100%);
}

.material-number {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: 50%;
    font-size: 1.5rem;
    font-weight: 700;
    flex: 0 1 auto;
    box-shadow: 0 4px 12px rgba(80, 147, 247, 0.3);
}

.material-title-group {
    flex: 1;
}

.material-title {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    font-weight: 700;
}

.material-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Toggle Button */
.toggle-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.toggle-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
    color: var(--primary);
}

.toggle-btn svg {
    transition: transform 0.3s ease;
}

.material-card.active .toggle-btn {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.material-card.active .toggle-btn svg {
    transform: rotate(180deg);
}

/* Material Content - Updated for visibility */
.material-content {
    display: none;
}

.material-card.active .material-content {
    display: block;
    padding: var(--spacing-lg);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.material-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

/* Resource Groups */
.resource-group {
    padding: var(--spacing-lg) 0;
}

.resource-group:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.resource-type {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.resource-icon {
    font-size: 1.5rem;
}

/* Resource List */
.resource-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.resource-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.resource-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(80, 147, 247, 0.05), transparent);
    transition: left 0.5s ease;
}

.resource-item:hover::before {
    left: 100%;
}

.resource-item:hover {
    border-color: var(--primary);
    background: white;
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.resource-info {
    flex: 1;
    min-width: 0;
}

.resource-info h5 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.resource-author {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    font-style: italic;
}

.resource-reason {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 0.5rem;
}

.resource-reason strong {
    color: var(--primary);
    font-weight: 600;
}

/* Resource Link */
.resource-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    white-space: nowrap;
    flex-shrink: 0;
    align-self: flex-start;
    box-shadow: 0 2px 8px rgba(80, 147, 247, 0.3);
}

.resource-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(80, 147, 247, 0.4);
}

.resource-link svg {
    width: 16px;
    height: 16px;
    stroke-width: 2.5;
}

/* ========================================
   Interactive Section
   ======================================== */

.interactive-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #5093f7 0%, #142a54 50%, #f59e0b 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.interactive-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.03"><circle cx="30" cy="30" r="3"/></g></g></svg>');
    animation: backgroundScroll 30s linear infinite;
}

.interactive-section .section-header {
    position: relative;
    z-index: 1;
}

.interactive-section .section-title,
.interactive-section .section-subtitle {
    color: white;
}

.interactive-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.interactive-card {
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    color: var(--text-primary);
    transition: var(--transition);
}

.interactive-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.interactive-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.interactive-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--border-radius);
    font-size: 2rem;
    transition: var(--transition);
    position: relative;
}

.interactive-icon::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--border-radius);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
    filter: blur(8px);
}

.interactive-card:hover .interactive-icon {
    animation: bounce 0.6s ease;
}

.interactive-card:hover .interactive-icon::before {
    opacity: 0.7;
}

.interactive-card h3 {
    font-size: 1.5rem;
}

.interactive-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.interactive-stats {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.stat {
    flex: 1;
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

/* Practice Tips */
.practice-tips {
    display: flex;
    gap: var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 1;
}

.tip-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.tip-content h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.tip-content ul {
    list-style: none;
    padding: 0;
}

.tip-content li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.95);
}

.tip-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: 700;
}

/* ========================================
   Progress Section
   ======================================== */

.progress-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.progress-tracker {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.progress-item {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.progress-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

/* Custom Checkbox */
.checkbox-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.checkbox-container input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkmark {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.checkbox-container:hover .checkmark {
    border-color: var(--primary);
}

.checkbox-container input[type="checkbox"]:checked ~ .checkmark {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-color: var(--primary);
    animation: checkboxPop 0.3s ease-out;
}

@keyframes checkboxPop {
    0% { transform: scale(0.8); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.checkbox-container input[type="checkbox"]:checked ~ .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: 700;
    font-size: 0.875rem;
}

.label-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Progress Bar */
.progress-bar-container {
    max-width: 600px;
    margin: 0 auto;
}

.progress-bar {
    height: 12px;
    background: var(--border-color);
    border-radius: 50px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 50px;
    transition: width 0.5s ease;
    width: 0%;
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

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

.progress-text {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    color: var(--text-secondary);
}

#progress-percentage {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* ========================================
   Arka Sync CTA Section
   ======================================== */

.arkasync-cta-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
    position: relative;
    overflow: hidden;
}

.arkasync-cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(80, 147, 247, 0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

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

.cta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.cta-card {
    position: relative;
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition);
    animation: fadeInUp 0.6s ease-out both;
}

.cta-card:nth-child(1) { animation-delay: 0.1s; }
.cta-card:nth-child(2) { animation-delay: 0.2s; }
.cta-card:nth-child(3) { animation-delay: 0.3s; }

.cta-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(80, 147, 247, 0.25);
}

.cta-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(80, 147, 247, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.cta-card:hover .cta-glow {
    opacity: 1;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    color: white;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.cta-card:hover .cta-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 20px 25px -5px rgba(80, 147, 247, 0.3);
}

.cta-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 700;
}

.cta-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(80, 147, 247, 0.4);
}

.cta-button span {
    position: relative;
    z-index: 1;
}

.cta-button svg {
    position: relative;
    z-index: 1;
    transition: transform 0.3s ease;
}

.cta-button:hover svg {
    transform: translateX(5px);
}

/* Decorative Elements */
.cta-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    pointer-events: none;
    overflow: hidden;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.circle-1 {
    width: 100px;
    height: 100px;
    background: var(--primary);
    top: -20px;
    right: -20px;
    animation-delay: 0s;
}

.circle-2 {
    width: 60px;
    height: 60px;
    background: var(--accent);
    top: 40px;
    right: 80px;
    animation-delay: 1s;
}

.circle-3 {
    width: 40px;
    height: 40px;
    background: var(--secondary);
    top: 100px;
    right: 20px;
    animation-delay: 2s;
}

/* Special styling for main CTA */
.cta-main {
    grid-column: span 1;
}

.cta-main .cta-icon {
    background: linear-gradient(135deg, #5093f7 0%, #f59e0b 100%);
}

.cta-blog .cta-icon {
    background: linear-gradient(135deg, #5093f7 0%, #142a54 100%);
}

.cta-community .cta-icon {
    background: linear-gradient(135deg, #142a54 0%, #f59e0b 100%);
}

/* Responsive CTA Grid */
@media (min-width: 1024px) {
    .cta-main {
        grid-column: span 2;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
        align-items: center;
    }
    
    .cta-main .cta-content {
        grid-column: 1;
    }
    
    .cta-main .cta-decoration {
        grid-column: 2;
        width: 100%;
        height: 100%;
        position: relative;
    }
}

/* ========================================
   Footer - Matching Main Website Design
   ======================================== */

.site-footer {
    position: relative;
    background: linear-gradient(to bottom right, #f9fafb 0%, #ffffff 50%, rgba(80, 147, 247, 0.05) 100%);
    overflow: hidden;
}

.footer-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.footer-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, var(--primary), #3b82f6, var(--accent));
}

.footer-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 2px 2px, rgba(59, 130, 246, 0.08) 1px, transparent 0);
    background-size: 40px 40px;
    opacity: 0.5;
}

.site-footer .container {
    position: relative;
    z-index: 1;
}

.footer-content {
    padding: 4rem 0 3rem;
}

/* Footer Header */
.footer-header {
    text-align: center;
    margin-bottom: 3rem;
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.5rem 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    background: linear-gradient(to right, rgba(80, 147, 247, 0.1), rgba(59, 130, 246, 0.1), rgba(245, 158, 11, 0.1));
    color: var(--primary);
    border: 1px solid rgba(80, 147, 247, 0.3);
    border-radius: 50px;
}

.footer-heading {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(to right, #1f2937, var(--primary), #2563eb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.footer-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Footer Grid */
.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

/* Footer Column */
.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(245, 158, 11, 0.3));
}

.footer-brand-name {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
}

.footer-tagline {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

/* Social Links */
.footer-social {
    margin-top: var(--spacing-sm);
}

.footer-social-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-social-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.social-link {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid #e5e7eb;
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    transition: var(--transition);
    text-decoration: none;
}

.social-link:hover {
    background: linear-gradient(to right, var(--primary), #3b82f6);
    border-color: transparent;
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(80, 147, 247, 0.3);
}

.social-link i {
    font-size: 0.875rem;
}

/* Footer Title */
.footer-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 2px;
    background: linear-gradient(to right, var(--primary), #3b82f6);
    border-radius: 2px;
}

/* Footer Links */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    position: relative;
    padding-left: 1rem;
}

.footer-link::before {
    content: '';
    position: absolute;
    left: 0;
    width: 6px;
    height: 6px;
    background: rgba(80, 147, 247, 0.4);
    border-radius: 50%;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.footer-link:hover::before {
    background: var(--primary);
}

/* Footer Contact */
.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-contact-item {
    margin: 0;
}

.contact-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid #e5e7eb;
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: var(--transition);
}

.contact-link:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(to right, var(--primary), #3b82f6);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.contact-icon-email {
    background: linear-gradient(to right, #3b82f6, var(--accent));
}

.contact-icon-phone {
    background: linear-gradient(to right, #10b981, #059669);
}

.contact-icon i {
    color: white;
    font-size: 0.875rem;
}

.contact-info {
    flex: 1;
    min-width: 0;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.contact-value {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    word-break: break-all;
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid #e5e7eb;
    background: rgba(255, 255, 255, 0.8);
}

.footer-bottom-content {
    padding: 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* Status Indicator */
.footer-status {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 50px;
}

.status-indicator {
    width: 10px;
    height: 10px;
    background: #10b981;
    border-radius: 50%;
    margin-right: 0.75rem;
    animation: pulse 2s ease-in-out infinite;
}

.status-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: #059669;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Footer Nav Links */
.footer-nav-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-nav-link {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition);
    position: relative;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.footer-nav-link:hover {
    color: var(--primary);
    background: rgba(80, 147, 247, 0.05);
}

.footer-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0.5rem;
    right: 0.5rem;
    height: 2px;
    background: linear-gradient(to right, var(--primary), #3b82f6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.footer-nav-link:hover::after {
    transform: scaleX(1);
}

/* Footer Copyright */
.footer-copyright {
    text-align: right;
}

.footer-copyright p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.copyright-link {
    color: var(--text-primary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.copyright-link:hover {
    color: var(--primary);
}

.copyright-subtitle {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* ========================================
   Scroll to Top Button
   ======================================== */

.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .hero-visual {
        order: -1;
    }
    
    .visual-container {
        height: 400px;
    }
    
    .hero-logo {
        width: 200px;
        height: 200px;
    }
    
    .logo-glow {
        width: 250px;
        height: 250px;
    }
    
    .tech-card {
        min-width: 100px;
        padding: var(--spacing-sm);
    }
    
    .tech-icon {
        width: 40px;
        height: 40px;
    }
    
    .code-snippet {
        max-width: 400px;
        bottom: 30px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .title-collab {
        font-size: 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-heading {
        font-size: 2rem;
    }
    
    .footer-description {
        font-size: 1rem;
    }
    
    .cta-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }
    
    body {
        padding-top: 70px;
    }
    
    .navbar {
        padding: 0;
    }
    
    .nav-content {
        padding: var(--spacing-sm) 0;
    }
    
    .nav-event {
        display: none;
    }
    
    .nav-divider {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: white;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        width: 100%;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .hero {
        padding: 4rem 0 5rem;
        min-height: 100vh;
        display: flex;
        align-items: center;
    }
    
    .hero .container {
        width: 100%;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        padding: 0 var(--spacing-md);
    }
    
    .hero-content {
        text-align: center;
        order: 2;
    }
    
    .hero-visual {
        order: 1;
    }
    
    .hero-badge {
        justify-content: center;
        font-size: 0.875rem;
        padding: 10px 20px;
        margin: 0 auto var(--spacing-lg);
        width: fit-content;
    }
    
    .visual-container {
        height: 320px;
        max-width: 350px;
        margin: 0 auto;
        position: relative;
        overflow: visible;
    }
    
    .hero-logo {
        width: 160px;
        height: 160px;
    }
    
    .logo-glow {
        width: 220px;
        height: 220px;
    }
    
    .tech-cards {
        display: flex;
        position: absolute;
        inset: 0;
    }
    
    .tech-card {
        min-width: 65px;
        padding: 8px;
        z-index: 10;
    }
    
    .tech-card-1 {
        top: 10%;
        left: 5%;
        transform: scale(0.85);
    }
    
    .tech-card-2 {
        top: 10%;
        right: 5%;
        transform: scale(0.85);
    }
    
    .tech-card-3 {
        bottom: 25%;
        left: 10%;
        transform: scale(0.85);
    }
    
    .tech-card-4 {
        display: flex;
        bottom: 25%;
        right: 10%;
        transform: scale(0.85);
    }
    
    .tech-icon {
        width: 28px;
        height: 28px;
        font-size: 16px;
    }
    
    .tech-name {
        font-size: 0.625rem;
    }
    
    .code-snippet {
        display: none;
    }
    
    .code-line {
        padding: 4px 8px;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
        margin-bottom: var(--spacing-md);
    }
    
    .title-highlight {
        display: block;
        margin: var(--spacing-sm) 0;
    }
    
    .highlight-text {
        font-size: 1.875rem;
    }
    
    .title-collab {
        font-size: 1.625rem;
        display: block;
        margin-top: var(--spacing-md);
    }
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.7;
        padding: 0 var(--spacing-sm);
        margin-bottom: var(--spacing-xl);
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-xl);
    }
    
    .stat-item {
        flex: 1 1 calc(33.333% - var(--spacing-md));
        min-width: 90px;
        padding: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 1.875rem;
    }
    
    .stat-label {
        font-size: 0.875rem;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-md);
        max-width: 400px;
        margin: 0 auto;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
        padding: 16px 24px;
        font-size: 1rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-header {
        margin-bottom: 2rem;
    }
    
    .footer-heading {
        font-size: 1.75rem;
    }
    
    .footer-description {
        font-size: 0.9375rem;
    }
    
    .footer-content {
        padding: 3rem 0 2rem;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .footer-status {
        order: 1;
    }
    
    .footer-nav-links {
        order: 2;
        justify-content: center;
        gap: 1rem;
    }
    
    .footer-copyright {
        order: 3;
        text-align: center;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .intro-content h2 {
        font-size: 1.75rem;
    }
    
    .intro-content p {
        font-size: 1rem;
    }
    
    .material-header {
        flex-wrap: wrap;
        padding: var(--spacing-md);
    }
    
    .material-title {
        font-size: 1.25rem;
    }
    
    .material-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .material-content > * {
        padding: 0 var(--spacing-md);
    }
    
    .resource-item {
        flex-direction: column;
        padding: var(--spacing-sm);
    }
    
    .resource-link {
        width: 100%;
        justify-content: center;
    }
    
    .interactive-cards {
        grid-template-columns: 1fr;
    }
    
    .interactive-card {
        padding: var(--spacing-md);
    }
    
    .interactive-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .practice-tips {
        flex-direction: column;
        text-align: center;
    }
    
    .tip-content li {
        text-align: left;
    }
    
    .progress-tracker {
        grid-template-columns: 1fr;
    }
    
    .cta-card {
        padding: var(--spacing-lg);
    }
    
    .cta-icon {
        width: 60px;
        height: 60px;
    }
    
    .cta-icon svg {
        width: 32px;
        height: 32px;
    }
    
    .cta-content h3 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .title-collab {
        font-size: 1.25rem;
    }
    
    .hero-subtitle {
        font-size: 0.9375rem;
    }
    
    .hero-badge {
        font-size: 0.8125rem;
        padding: 0.5rem 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stat-item {
        width: 100%;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .material-content > * {
        padding: 0 var(--spacing-sm);
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9375rem;
    }
    
    .floating-card {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.875rem;
    }
    
    .toggle-btn {
        width: 36px;
        height: 36px;
    }
}

/* ========================================
   Accessibility
   ======================================== */

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

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .hero,
    .scroll-to-top,
    .wave-divider {
        display: none;
    }
    
    .material-content {
        max-height: none !important;
    }
    
    body {
        background: white;
    }
}

/* Extra Small Screens - Hero Enhancement */
@media (max-width: 480px) {
    .hero {
        padding: 3rem 0 4rem;
        min-height: 100vh;
    }
    
    .hero-grid {
        padding: 0 var(--spacing-sm);
        gap: var(--spacing-xl);
    }
    
    .hero-badge {
        font-size: 0.813rem;
        padding: 8px 16px;
    }
    
    .badge-icon {
        font-size: 1rem;
    }
    
    .visual-container {
        height: 280px;
        max-width: 280px;
        position: relative;
        overflow: visible;
    }
    
    .hero-logo {
        width: 120px;
        height: 120px;
    }
    
    .logo-glow {
        width: 170px;
        height: 170px;
    }
    
    .tech-cards {
        display: flex;
        position: absolute;
        inset: 0;
    }
    
    .tech-card {
        min-width: 55px;
        padding: 6px;
        z-index: 10;
    }
    
    .tech-card-1 {
        top: 8%;
        left: 2%;
        transform: scale(0.75);
    }
    
    .tech-card-2 {
        top: 8%;
        right: 2%;
        transform: scale(0.75);
    }
    
    .tech-card-3 {
        bottom: 22%;
        left: 8%;
        transform: scale(0.75);
    }
    
    .tech-card-4 {
        display: flex;
        bottom: 22%;
        right: 8%;
        transform: scale(0.75);
    }
    
    .tech-icon {
        width: 22px;
        height: 22px;
        font-size: 13px;
    }
    
    .tech-name {
        font-size: 0.563rem;
    }
    
    .code-snippet {
        display: none;
    }
    
    .code-line {
        padding: 3px 6px;
    }
    
    .hero-title {
        font-size: 1.75rem;
        line-height: 1.35;
    }
    
    .highlight-text {
        font-size: 1.625rem;
    }
    
    .title-collab {
        font-size: 1.375rem;
    }
    
    .hero-subtitle {
        font-size: 0.938rem;
        line-height: 1.7;
        padding: 0;
    }
    
    .hero-stats {
        gap: var(--spacing-sm);
        flex-direction: column;
    }
    
    .stat-item {
        flex: 1 1 100%;
        min-width: auto;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .stat-number {
        font-size: 1.75rem;
    }
    
    .stat-label {
        font-size: 0.813rem;
    }
    
    .hero-cta {
        padding: 0 var(--spacing-sm);
        gap: var(--spacing-sm);
        max-width: 100%;
    }
    
    .hero-cta .btn {
        padding: 14px 20px;
        font-size: 0.938rem;
    }
    
    .btn svg {
        width: 16px;
        height: 16px;
    }
}

/* ========================================
   Class Materials Section Styles
   ======================================== */

.class-materials-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 50%, #f8fafc 100%);
    position: relative;
    overflow: hidden;
}

.class-materials-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(80, 147, 247, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(20, 42, 84, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.class-sessions-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.session-card {
    display: flex;
    gap: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(80, 147, 247, 0.1);
}

.session-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.session-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px -10px rgba(80, 147, 247, 0.25);
    border-color: var(--primary);
}

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

.session-number {
    position: relative;
    flex-shrink: 0;
}

.session-number .number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    font-size: 2rem;
    font-weight: 800;
    border-radius: 20px;
    box-shadow: 0 10px 30px -5px rgba(80, 147, 247, 0.4);
    position: relative;
    z-index: 2;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.session-card:hover .session-number .number {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 15px 40px -5px rgba(80, 147, 247, 0.6);
}

.number-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(80, 147, 247, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.session-card:hover .number-glow {
    opacity: 1;
}

.session-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.session-header {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.session-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(80, 147, 247, 0.1);
    color: var(--primary);
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    width: fit-content;
    border: 1px solid rgba(80, 147, 247, 0.2);
    transition: var(--transition);
}

.session-card:hover .session-badge {
    background: rgba(80, 147, 247, 0.15);
    border-color: var(--primary);
}

.session-badge svg {
    width: 16px;
    height: 16px;
}

.session-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin: 0;
}

.session-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.session-resources {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.resource-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.resource-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(80, 147, 247, 0.05), transparent);
    transition: left 0.5s ease;
}

.resource-link:hover::before {
    left: 100%;
}

.resource-link:hover {
    transform: translateX(8px);
    border-color: var(--primary);
    background: white;
    box-shadow: var(--shadow-md);
}

.resource-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    flex-shrink: 0;
    transition: var(--transition);
}

.zoom-link .resource-icon {
    background: linear-gradient(135deg, #2d8cff 0%, #0056d2 100%);
    color: white;
}

.drive-link .resource-icon {
    background: linear-gradient(135deg, #34a853 0%, #0f9d58 100%);
    color: white;
}

.resource-link:hover .resource-icon {
    transform: scale(1.1) rotate(5deg);
}

.resource-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.resource-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

.resource-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    background: rgba(80, 147, 247, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    display: inline-block;
    width: fit-content;
}

.resource-arrow {
    flex-shrink: 0;
    transition: var(--transition);
    color: var(--primary);
}

.resource-link:hover .resource-arrow {
    transform: translateX(4px);
}

.materials-info-box {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-radius: var(--border-radius-lg);
    border: 2px solid #fbbf24;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px -10px rgba(251, 191, 36, 0.3);
}

.materials-info-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
    pointer-events: none;
}

.info-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 12px;
    color: #f59e0b;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.info-content h4 {
    font-size: 1.25rem;
    color: #92400e;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.info-content p {
    font-size: 1rem;
    color: #78350f;
    line-height: 1.6;
    margin: 0;
}

/* Responsive Design for Class Materials */
@media (max-width: 768px) {
    .class-materials-section {
        padding: var(--spacing-xl) 0;
    }

    .session-card {
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .session-number .number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        border-radius: 16px;
    }

    .number-glow {
        width: 80px;
        height: 80px;
    }

    .session-title {
        font-size: 1.25rem;
    }

    .session-description {
        font-size: 0.938rem;
    }

    .resource-link {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .resource-icon {
        width: 40px;
        height: 40px;
    }

    .resource-label {
        font-size: 0.938rem;
    }

    .resource-meta {
        font-size: 0.75rem;
    }

    .materials-info-box {
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-sm);
    }

    .info-icon {
        width: 40px;
        height: 40px;
    }

    .info-content h4 {
        font-size: 1.125rem;
    }

    .info-content p {
        font-size: 0.938rem;
    }
}

@media (max-width: 480px) {
    .session-card {
        padding: var(--spacing-md);
    }

    .session-number .number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
        border-radius: 12px;
    }

    .session-title {
        font-size: 1.125rem;
    }

    .session-description {
        font-size: 0.875rem;
    }

    .resource-link {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .resource-link:hover {
        transform: translateX(0);
        transform: translateY(-4px);
    }

    .resource-arrow {
        align-self: flex-end;
    }

    .resource-meta {
        font-size: 0.688rem;
        word-break: break-all;
    }
}