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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --error-color: #ef4444;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --hover-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--light-bg);
}

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

header {
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.cart-link {
    position: relative;
    display: flex;
    align-items: center;
}

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent-color);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: white;
    color: var(--primary-color);
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--hover-shadow);
}

.features {
    padding: 80px 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-icon {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    padding: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    color: white;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.about-courses {
    padding: 80px 0;
    background: var(--light-bg);
}

.about-courses h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    text-align: justify;
}

.comparison-table {
    padding: 80px 0;
    background: white;
}

.comparison-table h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    box-shadow: var(--card-shadow);
    border-radius: 12px;
    overflow: hidden;
}

thead {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

tbody tr:hover {
    background: var(--light-bg);
}

tbody tr:last-child td {
    border-bottom: none;
}

.products {
    padding: 80px 0;
    background: var(--light-bg);
}

.products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.product-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.product-info p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.btn-primary {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn-secondary {
    display: inline-block;
    background: var(--text-secondary);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.3s ease;
    border: none;
    cursor: pointer;
}

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

.email-subscription {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.subscription-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.subscription-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.subscription-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.email-form {
    display: flex;
    gap: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.email-form input {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
}

.email-form button {
    padding: 14px 28px;
    white-space: nowrap;
}

.success-message {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--success-color);
    border-radius: 8px;
    font-weight: 600;
}

footer {
    background: var(--dark-bg);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: white;
    transition: background 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.contact-info svg {
    flex-shrink: 0;
    margin-top: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    z-index: 10000;
    display: none;
}

.cookie-consent.show {
    display: block;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.cookie-text h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.cookie-text p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.cookie-text a {
    color: var(--primary-color);
    text-decoration: underline;
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
}

.product-detail {
    padding: 60px 0;
}

.product-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.product-detail-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

.product-detail-info h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-detail-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.product-detail-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.product-features {
    background: var(--light-bg);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.product-features h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-features ul {
    list-style: none;
}

.product-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.product-features li:before {
    content: "✓";
    color: var(--success-color);
    font-weight: 700;
}

.product-actions {
    display: flex;
    gap: 1rem;
}

.product-actions button {
    flex: 1;
}

.product-tabs {
    margin-top: 4rem;
}

.tab-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-button {
    padding: 1rem 2rem;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.cart-empty {
    text-align: center;
    padding: 60px 0;
}

.cart-empty svg {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.cart-empty h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.cart-empty p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cart-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    padding: 60px 0;
}

.cart-items {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
}

.cart-item-info h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.cart-item-price {
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.quantity-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
    transition: background 0.3s ease;
}

.quantity-btn:hover {
    background: var(--light-bg);
}

.remove-btn {
    background: var(--error-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s ease;
}

.remove-btn:hover {
    background: #dc2626;
}

.cart-summary {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    height: fit-content;
}

.cart-summary h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    color: var(--text-secondary);
}

.summary-row.total {
    border-top: 2px solid var(--border-color);
    margin-top: 1rem;
    padding-top: 1rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.checkout-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 60px 0;
}

.checkout-form h1 {
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.success-page {
    text-align: center;
    padding: 100px 0;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: white;
}

.success-page h1 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.success-page p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-page {
    padding: 60px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info-section h1 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-info-section p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.contact-details {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
}

.contact-detail-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-detail-item svg {
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-detail-item h3 {
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-detail-item p {
    color: var(--text-secondary);
}

.about-page {
    padding: 60px 0;
}

.about-hero {
    text-align: center;
    margin-bottom: 4rem;
}

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.about-hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.team-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-member {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: var(--hover-shadow);
}

.team-member img {
    width: 100%;
    max-width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.team-member h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.team-member .position {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.team-member .bio {
    color: var(--text-secondary);
    line-height: 1.6;
}

.notification {
    position: fixed;
    top: 80px;
    right: 20px;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--hover-shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 10000;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification.success {
    border-left: 4px solid var(--success-color);
}

.notification svg {
    color: var(--success-color);
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .nav-menu {
        display: none;
    }

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

    .product-detail-content,
    .cart-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .email-form {
        flex-direction: column;
    }

    .cookie-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    th, td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
}