:root {
    --primary: #6366f1;
    --secondary: #8b5cf6;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --bg-dark: #0a0a12;
    --bg-card: #13131f;
    --bg-elevated: #1c1c2e;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border: rgba(255, 255, 255, 0.08);
    --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
    --gradient-gold: linear-gradient(135deg, #f59e0b, #fbbf24);
    --gradient-africa: linear-gradient(135deg, #10b981, #f59e0b, #ef4444);
    --gradient-academy: linear-gradient(135deg, #10b981, #059669);
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.gr-gold {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gr-green {
    background: var(--gradient-academy);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header */
.header {
    background: rgba(10, 10, 18, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 15px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
}

.logo img {
    height: 40px;
}

.logo-badge {
    font-size: 0.6rem;
    background: var(--gradient-academy);
    color: #fff;
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-green {
    background: var(--gradient-academy);
    color: #fff;
}

.btn-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
}

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

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Hero */
.hero {
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.hero-text h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 3.2rem;
    line-height: 1.1;
    margin-bottom: 25px;
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 35px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.hero-stat h4 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--success);
}

.hero-stat p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.hero-visual {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 30px;
    position: relative;
}

.hero-visual-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-academy);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 20px;
}

.hero-visual h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.hero-visual p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.progress-bar {
    height: 8px;
    background: var(--bg-elevated);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-academy);
    width: 65%;
    border-radius: 4px;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Features */
.features {
    padding: 80px 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.feature-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--success);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--gradient-academy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.feature-card:nth-child(2) .feature-icon {
    background: var(--gradient-gold);
    color: #000;
}

.feature-card:nth-child(3) .feature-icon {
    background: var(--gradient-primary);
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Courses */
.courses {
    padding: 80px 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.3s;
}

.course-card:hover {
    transform: translateY(-8px);
    border-color: var(--success);
}

.course-image {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
}

.course-image.beginner {
    background: linear-gradient(135deg, #10b981, #34d399);
}

.course-image.intermediate {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
}

.course-image.advanced {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.course-image.expert {
    background: linear-gradient(135deg, #ef4444, #f87171);
}

.course-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 6px 14px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.course-badge.free {
    background: var(--success);
}

.course-badge.premium {
    background: var(--accent);
    color: #000;
}

.course-body {
    padding: 25px;
}

.course-level {
    font-size: 0.75rem;
    color: var(--success);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.course-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.course-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-clamp: 2;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.course-meta span i {
    color: var(--success);
}

.course-footer {
    padding: 0 25px 25px;
}

.btn-course {
    width: 100%;
    padding: 14px;
    background: var(--gradient-academy);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-course:hover {
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.3);
}

/* Testimonials */
.testimonials {
    padding: 80px 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.testimonial-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
}

.testimonial-quote {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 25px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-academy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.author-info h4 {
    font-size: 0.95rem;
    margin-bottom: 3px;
}

.author-info p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* CTA */
.cta {
    padding: 100px 0;
    text-align: center;
    position: relative;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 300px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
}

.cta p {
    color: var(--text-secondary);
    margin-bottom: 35px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    position: relative;
}

/* Footer */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 40px 0;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    transition: color 0.2s;
}

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

.footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        display: none;
    }

    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero-text h1 {
        font-size: 2.2rem;
    }

    .nav-links {
        display: none;
    }

    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons,
    .cta-buttons {
        flex-direction: column;
    }
}