:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #f59e0b;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --white: #ffffff;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --gradient-2: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --gradient-3: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 0.95);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--dark);
}

.logo-icon {
    width: 42px; height: 42px;
    background: var(--gradient-1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.logo span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-links a:hover { color: var(--primary); background: rgba(99, 102, 241, 0.08); }
.nav-links a.active { color: var(--primary); background: rgba(99, 102, 241, 0.1); }

.nav-buttons { display: flex; align-items: center; gap: 12px; }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

/* ===== BUTTONS ===== */
.btn {
    padding: 10px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary-light);
}
.btn-outline:hover {
    background: var(--primary); color: white; border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.btn-primary {
    background: var(--gradient-1); color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5); }

.btn-secondary {
    background: var(--gradient-2); color: white;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}
.btn-secondary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(245, 158, 11, 0.5); }

.btn-white {
    background: white; color: var(--primary);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3); }

.btn-transparent {
    background: transparent; color: white;
    border: 2px solid rgba(255, 255, 255, 0.5);
}
.btn-transparent:hover { background: rgba(255, 255, 255, 0.1); border-color: white; transform: translateY(-2px); }

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f0f4ff 0%, #e0e7ff 50%, #ede9fe 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%; left: -10%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.hero-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content { animation: slideInLeft 1s ease-out; }

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 24px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.3); }
    50% { box-shadow: 0 0 0 10px rgba(99, 102, 241, 0); }
}

.hero h1 {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--dark);
}

.hero h1 span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.hero h1 span::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 100%; height: 6px;
    background: var(--gradient-1);
    border-radius: 3px;
    opacity: 0.3;
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 40px;
    max-width: 500px;
    line-height: 1.8;
}

.hero-buttons { display: flex; gap: 16px; margin-bottom: 48px; }

.hero-stats { display: flex; gap: 40px; }
.stat { text-align: left; }
.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label { font-size: 0.875rem; color: var(--gray); font-weight: 500; }

.hero-visual { position: relative; animation: slideInRight 1s ease-out; }

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

.hero-card {
    background: white;
    border-radius: 24px;
    padding: 32px;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 2;
}

.hero-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.hero-card-avatar {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
}

.hero-card-info h4 { font-weight: 700; font-size: 1rem; }
.hero-card-info p { font-size: 0.8rem; color: var(--gray); margin: 0; }

.hero-card-badge {
    display: inline-block;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.hero-card-content {
    background: var(--bg);
    border-radius: 16px;
    padding: 20px;
    margin-top: 16px;
}

.course-title { font-weight: 600; margin-bottom: 8px; color: var(--dark); }
.course-label { font-size: 0.85rem; color: var(--gray); margin-bottom: 12px; }

.progress-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
    margin-top: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-1);
    border-radius: 4px;
    animation: progressGrow 2s ease-out forwards;
}

@keyframes progressGrow { from { width: 0; } to { width: 75%; } }

.progress-text { font-size: 0.85rem; color: var(--primary); font-weight: 600; margin-top: 8px; text-align: right; }

.floating-elements {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
}

.float-card {
    position: absolute;
    background: white;
    border-radius: 16px;
    padding: 16px;
    box-shadow: var(--shadow-lg);
    animation: floatCard 6s ease-in-out infinite;
}

.float-card i { font-size: 1.5rem; }
.float-card p { font-size: 0.8rem; font-weight: 600; margin-top: 8px; }

.float-card-1 { top: -20px; right: -30px; animation-delay: 0s; }
.float-card-1 i { color: var(--primary); }
.float-card-2 { bottom: 40px; left: -40px; animation-delay: 2s; }
.float-card-2 i { color: var(--secondary); }
.float-card-3 { bottom: -20px; right: 20px; animation-delay: 4s; }
.float-card-3 i { color: #10b981; }

@keyframes floatCard {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(2deg); }
}

/* ===== CONTAINER & SECTIONS ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 80px;
}

.section-label {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: 6px 20px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--dark);
}

.section-header p {
    color: var(--gray);
    font-size: 1.1rem;
    line-height: 1.7;
}

/* ===== FEATURES ===== */
.features { padding: 120px 0; background: var(--white); }

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg);
    border-radius: 24px;
    padding: 40px 32px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }
.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
    width: 64px; height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 24px;
    transition: all 0.4s ease;
}

.feature-card:nth-child(1) .feature-icon { background: rgba(99, 102, 241, 0.1); color: var(--primary); }
.feature-card:nth-child(2) .feature-icon { background: rgba(245, 158, 11, 0.1); color: var(--secondary); }
.feature-card:nth-child(3) .feature-icon { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.feature-card:hover .feature-icon { transform: scale(1.1) rotate(5deg); }

.feature-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; color: var(--dark); }
.feature-card p { color: var(--gray); font-size: 0.95rem; line-height: 1.7; }

/* ===== STATS ===== */
.stats { padding: 80px 0; background: var(--dark); position: relative; overflow: hidden; }

.stats::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    position: relative;
    z-index: 1;
}

.stat-item { text-align: center; color: white; }
.stat-item i { font-size: 2.5rem; margin-bottom: 16px; opacity: 0.8; }
.stat-item .number {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 8px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-item .label { font-size: 1rem; opacity: 0.7; font-weight: 500; }

/* ===== COURSES ===== */
.courses { padding: 120px 0; background: linear-gradient(180deg, var(--bg) 0%, var(--white) 100%); }

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.course-card {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
    position: relative;
}

.course-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); }

.course-image {
    height: 200px;
    background: var(--gradient-1);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.course-image::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 60%;
    background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
}

.course-image i { font-size: 4rem; color: rgba(255, 255, 255, 0.3); z-index: 1; }

.course-badge {
    position: absolute;
    top: 16px; left: 16px;
    background: var(--gradient-2);
    color: white;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
}

.course-content { padding: 24px; }

.course-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--gray);
}

.course-content h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--dark); }
.course-content p { color: var(--gray); font-size: 0.9rem; line-height: 1.6; margin-bottom: 16px; }

.course-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid #e2e8f0;
}

.course-price { font-size: 1.5rem; font-weight: 800; color: var(--primary); }
.course-price span { font-size: 0.9rem; color: var(--gray); font-weight: 500; text-decoration: line-through; margin-left: 8px; }

.course-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===== TESTIMONIALS ===== */
.testimonials { padding: 120px 0; background: var(--white); }

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    background: var(--bg);
    border-radius: 24px;
    padding: 40px 32px;
    position: relative;
    transition: all 0.4s ease;
}

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

.testimonial-card::before {
    content: '"';
    font-size: 6rem;
    font-weight: 900;
    color: var(--primary);
    opacity: 0.1;
    position: absolute;
    top: 10px; left: 20px;
    line-height: 1;
}

.testimonial-stars { display: flex; gap: 4px; margin-bottom: 20px; }
.testimonial-stars i { color: var(--secondary); font-size: 0.9rem; }

.testimonial-text {
    font-size: 1rem;
    color: var(--dark-light);
    line-height: 1.8;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.testimonial-author { display: flex; align-items: center; gap: 16px; }

.testimonial-avatar {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
}

.testimonial-info h4 { font-weight: 700; font-size: 1rem; color: var(--dark); }
.testimonial-info p { font-size: 0.85rem; color: var(--gray); }

/* ===== CTA ===== */
.cta {
    padding: 120px 0;
    background: var(--gradient-1);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%; left: -20%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -50%; right: -20%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    text-align: center;
    color: white;
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 { font-size: 3.5rem; font-weight: 900; margin-bottom: 20px; }
.cta-content p { font-size: 1.25rem; opacity: 0.9; margin-bottom: 40px; line-height: 1.7; }

.cta-buttons { display: flex; gap: 16px; justify-content: center; }

/* ===== FOOTER ===== */
.footer { background: var(--dark); color: white; padding: 80px 0 40px; }

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand .logo { color: white; margin-bottom: 20px; }
.footer-brand .logo span { -webkit-text-fill-color: white; }
.footer-brand p { color: var(--gray-light); line-height: 1.8; margin-bottom: 24px; }

.social-links { display: flex; gap: 12px; }
.social-links a {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: var(--dark-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-light);
    text-decoration: none;
    transition: all 0.3s ease;
}
.social-links a:hover { background: var(--primary); color: white; transform: translateY(-3px); }

.footer-column h4 { font-weight: 700; font-size: 1rem; margin-bottom: 24px; color: white; }
.footer-column ul { list-style: none; }
.footer-column ul li { margin-bottom: 12px; }
.footer-column ul li a {
    color: var(--gray-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}
.footer-column ul li a:hover { color: var(--primary-light); padding-left: 4px; }

.footer-bottom {
    border-top: 1px solid var(--dark-light);
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--gray-light);
    font-size: 0.9rem;
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active { opacity: 1; visibility: visible; }

.modal {
    background: white;
    border-radius: 24px;
    padding: 48px;
    max-width: 450px;
    width: 90%;
    transform: scale(0.9);
    transition: all 0.3s ease;
    position: relative;
}

.modal-overlay.active .modal { transform: scale(1); }

.modal-close {
    position: absolute;
    top: 20px; right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray);
    transition: color 0.3s ease;
}
.modal-close:hover { color: var(--dark); }

.modal h3 { font-size: 1.75rem; font-weight: 800; margin-bottom: 8px; text-align: center; }
.modal p { color: var(--gray); text-align: center; margin-bottom: 32px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 8px; color: var(--dark); }
.form-group input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}
.form-group input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1); }

.modal .btn-primary { width: 100%; justify-content: center; padding: 14px; font-size: 1rem; }

.modal-footer { text-align: center; margin-top: 24px; color: var(--gray); font-size: 0.9rem; }
.modal-footer a { color: var(--primary); text-decoration: none; font-weight: 600; }

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-content { order: 1; }
    .hero-visual { order: 2; max-width: 500px; margin: 0 auto; }
    .hero h1 { font-size: 3rem; }
    .hero p { margin: 0 auto 40px; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .features-grid, .courses-grid, .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links, .nav-buttons { display: none; }
    .mobile-menu-btn { display: block; }
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.1rem; }
    .hero-buttons { flex-direction: column; }
    .hero-stats { flex-direction: column; gap: 24px; }
    .features-grid, .courses-grid, .testimonials-grid, .stats-grid { grid-template-columns: 1fr; }
    .section-header h2 { font-size: 2rem; }
    .cta-content h2 { font-size: 2.5rem; }
    .cta-buttons { flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
}