/* ============================================
   RESET & VARIABLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Educational Theme */
    --color-primary: #2563EB;      /* Blue - Knowledge & Trust */
    --color-secondary: #10B981;    /* Green - Growth & Success */
    --color-accent: #F59E0B;       /* Orange - Energy & Creativity */
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-black: #0A0A0A;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(16, 185, 129, 0.1) 50%, rgba(245, 158, 11, 0.1) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-blur: blur(10px);
}

/* ============================================
   BASE STYLES
   ============================================ */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.logo-shapes {
    position: relative;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shape {
    position: absolute;
    width: 20px;
    height: 30px;
    border-radius: 50% 50% 50% 0;
    animation: float 3s ease-in-out infinite;
}

.shape-primary {
    background: var(--color-primary);
    top: 0;
    left: 15px;
    transform: rotate(-45deg);
    animation-delay: 0s;
}

.shape-secondary {
    background: var(--color-secondary);
    bottom: 0;
    left: 0;
    transform: rotate(45deg);
    animation-delay: 1s;
}

.shape-accent {
    background: var(--color-accent);
    bottom: 0;
    right: 0;
    transform: rotate(-135deg);
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(var(--rotation, 0deg)); }
    50% { transform: translateY(-10px) rotate(var(--rotation, 0deg)); }
}

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

.logo-kalan {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: 0.05em;
}

.logo-school {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-600);
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--color-gray-700);
    font-weight: 500;
    font-size: var(--font-size-base);
    position: relative;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

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

/* Style spécial pour le lien Contact */
.nav-link-contact {
    background: var(--gradient-primary);
    color: var(--color-white) !important;
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.nav-link-contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.nav-link-contact::after {
    display: none;
}

.nav-link-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
    color: var(--color-white) !important;
}

.nav-link-contact:active {
    transform: translateY(0);
}

/* Style spécial pour le lien Admin */
.nav-link-admin {
    background: var(--gradient-secondary);
    color: var(--color-white) !important;
    padding: var(--spacing-xs) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    margin-left: var(--spacing-md);
}

.nav-link-admin::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.nav-link-admin::after {
    display: none;
}

.nav-link-admin:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
    color: var(--color-white) !important;
}

.nav-link-admin:active {
    transform: translateY(0);
}

/* Animation pulse pour attirer l'attention */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    }
    50% {
        box-shadow: 0 4px 25px rgba(37, 99, 235, 0.5);
    }
}

@keyframes pulse-glow-admin {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
    }
    50% {
        box-shadow: 0 4px 25px rgba(16, 185, 129, 0.5);
    }
}

.nav-link-contact {
    animation: pulse-glow 3s ease-in-out infinite;
}

.nav-link-admin {
    animation: pulse-glow-admin 3s ease-in-out infinite;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--color-gray-900);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-2xl);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--color-secondary);
    bottom: -150px;
    right: -150px;
    animation-delay: 5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--color-accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, 50px) scale(1.1); }
    66% { transform: translate(-50px, -50px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-text {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-black);
}

.title-line {
    display: block;
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}

.title-line:nth-child(1) { animation-delay: 0.2s; }
.title-line:nth-child(2) { animation-delay: 0.4s; }
.title-line:nth-child(3) { animation-delay: 0.6s; }

.title-line.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

.hero-visual {
    position: relative;
    height: 500px;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.2s forwards;
}

.floating-card {
    position: absolute;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-xl);
    animation: floatCard 6s ease-in-out infinite;
}

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation-delay: 2s;
}

.card-3 {
    bottom: 10%;
    left: 30%;
    animation-delay: 4s;
}

.card-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
}

.floating-card p {
    font-weight: 600;
    color: var(--color-gray-800);
    font-size: var(--font-size-lg);
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.5s forwards;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--color-gray-400);
    border-radius: var(--radius-full);
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--color-gray-400);
    border-radius: var(--radius-full);
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    position: relative;
    overflow: hidden;
}

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

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

.btn-primary:hover::before {
    left: 100%;
}

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

.btn-secondary {
    background: transparent;
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-300);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    background: var(--color-gray-50);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: flex-start;
}

.about-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.text-block h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.text-block p {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

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

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    font-weight: 500;
}

/* ============================================
   PROGRAMS SECTION
   ============================================ */
.programs {
    background: var(--color-white);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.program-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

.program-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--color-primary);
}

.program-icon {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-md);
    display: block;
}

.program-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.program-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.program-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.program-more {
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
}

.program-more .program-name,
.program-more .program-description {
    color: var(--color-white);
}

.program-more .tag {
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background: var(--color-gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    transition: transform var(--transition-base);
}

.info-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-xl);
}

.info-icon {
    font-size: var(--font-size-3xl);
    flex-shrink: 0;
}

.info-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

.info-content p {
    color: var(--color-gray-600);
    line-height: 1.8;
}

.info-content a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.info-content a:hover {
    color: var(--color-secondary);
}

.contact-form-container {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

.form-group label {
    font-weight: 600;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background: var(--color-white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

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

.footer-logo .logo-kalan {
    color: var(--color-white);
}

.footer-logo .logo-school {
    color: var(--color-gray-400);
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray-400);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.footer-contact p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-800);
    color: var(--color-gray-500);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 80%;
        background: var(--color-white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
        transition: right var(--transition-base);
        box-shadow: var(--shadow-2xl);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    /* Style Contact et Admin sur mobile */
    .nav-link-contact,
    .nav-link-admin {
        margin-top: var(--spacing-md);
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-lg);
        width: 80%;
        text-align: center;
        display: block;
        margin-left: 0;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-visual {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}