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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header Styles */


.btn-primary {
    background: #6366f1;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: #5558e3;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    padding: 4rem 5%;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.btn-secondary {
    background: white;
    color: #6366f1;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.3s;
}

.btn-secondary:hover {
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
}

.hero-info {
    color: white;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Main Content Section */
.main-section {
    padding: 5rem 5%;
    background: #f8f9fa;
}

.content-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.content-left h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.content-left h2 .highlight {
    color: #6366f1;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #e0e7ff;
    color: #6366f1;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.badge i {
    color: #6366f1;
}

.content-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-watch {
    background: white;
    color: #666;
    border: 1px solid #ddd;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}

.stat-item h3 {
    font-size: 2rem;
    color: #333;
}

.stat-item p {
    color: #666;
    font-size: 0.9rem;
}

.content-right {
    position: relative;
}

.hero-image {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.certificate-badge {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.certificate-icon {
    width: 40px;
    height: 40px;
    background: #d1fae5;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #10b981;
}

/* Features Section */
.features-section {
    padding: 5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: #666;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.icon-blue { background: #dbeafe; color: #3b82f6; }
.icon-purple { background: #f3e8ff; color: #a855f7; }
.icon-green { background: #d1fae5; color: #10b981; }
.icon-orange { background: #fed7aa; color: #f97316; }
.icon-pink { background: #fce7f3; color: #ec4899; }
.icon-cyan { background: #cffafe; color: #06b6d4; }

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Courses Section */
.courses-section {
    padding: 5rem 5%;
    background: #f8f9fa;
}

.courses-container {
    max-width: 1400px;
    margin: 0 auto;
}

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

.course-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.course-card:hover {
    transform: translateY(-5px);
}

.course-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    position: relative;
}

.course-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: #6366f1;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
}

.course-content {
    padding: 1.5rem;
}

.course-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.course-instructor {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.course-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.course-rating {
    color: #fbbf24;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    font-size: 1.5rem;
    color: #6366f1;
    font-weight: bold;
}

.btn-enroll {
    background: #6366f1;
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
}

.view-all-btn {
    text-align: center;
}

.btn-view-all {
    background: white;
    color: #6366f1;
    border: 2px solid #6366f1;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
}

/* Testimonials Section */
.testimonials-section {
    padding: 5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.stars {
    color: #fbbf24;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: #666;
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.author-name {
    font-weight: 600;
    color: #333;
}

.author-title {
    font-size: 0.9rem;
    color: #666;
}

/* Footer Styles */


/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .content-container,
    .features-grid,
    .courses-grid,
    .testimonials-grid,
    .footer-top {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .stats {
        flex-direction: column;
        gap: 1rem;
    }
}

.video-showcase {
    padding: 4rem 5%;
    background: #f8f9fa;
}

.video-container {
    max-width: 1200px;
    margin: auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

/* Main Video */
.video-main iframe {
    width: 100%;
    height: 100%;
    min-height: 420px;
    border-radius: 14px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.25);
}

/* Side Videos */
.video-side {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.video-small iframe {
    width: 100%;
    height: 200px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

/* Responsive */
@media (max-width: 768px) {
    .video-container {
        grid-template-columns: 1fr;
    }

    .video-main iframe {
        min-height: 240px;
    }

    .video-small iframe {
        height: 200px;
    }
}