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

:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #f72585;
    --text-color: #2d3748;
    --text-light: #718096;
    --bg-color: #ffffff;
    --bg-light: #f7fafc;
    --border-color: #e2e8f0;
    --success-color: #48bb78;
    --error-color: #f56565;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

/* Navbar */
.navbar {
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

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

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

.cart-link {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cart-count {
    background: var(--accent-color);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.875rem;
}

/* Hero Section */
.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: 20px;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background: #d61f6d;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
    width: 100%;
}

/* Sections */
section {
    padding: 80px 0;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-color);
}

/* Advantages */
.advantages {
    background: var(--bg-light);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.advantage-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

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

.advantage-icon {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.advantage-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

/* Statistics */
.statistics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* About Section */
.about-courses {
    background: white;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
}

/* Chart Section */
.chart-section {
    background: var(--bg-light);
}

.chart-container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

#demandChart {
    width: 100%;
    height: 400px;
}

/* Products */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.product-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--accent-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.product-info p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.product-price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Product Detail */
.product-detail {
    padding: 60px 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.product-image-large {
    position: relative;
}

.product-image-large img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.product-detail-info h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.product-price-large {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.product-description {
    margin-bottom: 40px;
}

.product-description h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.product-description ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.product-description li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.product-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Cart */
.cart-section {
    padding: 60px 0;
    min-height: 60vh;
}

.cart-empty {
    text-align: center;
    padding: 100px 0;
}

.cart-empty svg {
    color: var(--text-light);
    margin-bottom: 20px;
}

.cart-items {
    margin-bottom: 40px;
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 20px;
    padding: 20px;
    background: white;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    align-items: center;
}

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

.cart-item-info h3 {
    margin-bottom: 10px;
}

.cart-item-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.cart-item-remove {
    background: var(--error-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.cart-summary {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.cart-total {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 20px 0;
}

/* Checkout */
.checkout-section {
    padding: 60px 0;
}

.checkout-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.checkout-form,
.order-summary {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

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

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

/* Success Page */
.success-section {
    padding: 100px 0;
    text-align: center;
}

.success-content {
    max-width: 600px;
    margin: 0 auto;
}

.success-icon {
    color: var(--success-color);
    margin-bottom: 30px;
}

.success-message {
    font-size: 1.25rem;
    margin: 20px 0;
}

.success-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
}

/* Contact */
.contact-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.contact-content {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-details h3 {
    margin-bottom: 10px;
    font-size: 1.25rem;
}

.contact-details a {
    color: var(--primary-color);
    text-decoration: none;
}

.contact-form-wrapper {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* About */
.about-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.about-story {
    padding: 80px 0;
}

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

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

.team-intro {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 60px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.team-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.team-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.team-card h3 {
    padding: 20px 20px 10px;
    font-size: 1.5rem;
}

.team-position {
    padding: 0 20px;
    color: var(--primary-color);
    font-weight: 600;
}

.team-bio {
    padding: 15px 20px 20px;
    color: var(--text-light);
}

.values-section {
    padding: 80px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.value-card {
    text-align: center;
    padding: 30px;
}

.value-icon {
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Blog */
.blog-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 80px 0;
    text-align: center;
}

.blog-list {
    padding: 80px 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.blog-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.blog-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.blog-content {
    padding: 25px;
}

.blog-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.blog-category {
    color: var(--primary-color);
    font-weight: 600;
}

.blog-card h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    text-align: left;
}

.blog-card h2 a {
    color: var(--text-color);
    text-decoration: none;
}

.blog-card h2 a:hover {
    color: var(--primary-color);
}

.blog-read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

/* Blog Post */
.blog-post {
    padding: 60px 0;
}

.post-header {
    max-width: 800px;
    margin: 0 auto 40px;
}

.post-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 0.875rem;
    color: var(--text-light);
}

.post-header h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

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

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: 600;
    display: block;
}

.author-title {
    color: var(--text-light);
    font-size: 0.875rem;
}

.post-featured-image {
    max-width: 1000px;
    margin: 0 auto 60px;
}

.post-featured-image img {
    width: 100%;
    border-radius: 12px;
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
}

.post-content .lead {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

.post-content h2 {
    font-size: 2rem;
    margin: 40px 0 20px;
    text-align: left;
}

.post-content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.post-content ul,
.post-content ol {
    margin: 20px 0 20px 30px;
}

.post-content li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.post-content a {
    color: var(--primary-color);
}

.post-footer {
    max-width: 800px;
    margin: 60px auto 0;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.post-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.tag {
    background: var(--bg-light);
    color: var(--text-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.875rem;
}

.post-share {
    display: flex;
    gap: 15px;
    align-items: center;
}

.share-btn {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.related-posts {
    max-width: 1000px;
    margin: 80px auto 0;
}

.related-posts h2 {
    text-align: left;
    margin-bottom: 40px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.related-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-decoration: none;
    color: var(--text-color);
    transition: transform 0.3s;
}

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

.related-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.related-card h3 {
    padding: 20px;
    font-size: 1.25rem;
}

/* Footer */
.footer {
    background: #1a202c;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 1.25rem;
}

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

.footer-section li {
    margin-bottom: 12px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.footer-section a {
    color: #cbd5e0;
    text-decoration: none;
    transition: color 0.3s;
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    color: white;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #cbd5e0;
}

/* Cookie Consent */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #1a202c;
    color: white;
    padding: 20px;
    box-shadow: 0 -4px 6px rgba(0,0,0,0.1);
    z-index: 1001;
    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: 20px;
}

.cookie-content p {
    flex: 1;
}

.cookie-content a {
    color: var(--primary-color);
}

.cookie-buttons {
    display: flex;
    gap: 15px;
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    z-index: 1002;
    display: none;
    animation: slideIn 0.3s ease-out;
}

.notification.show {
    display: block;
}

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

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .product-detail-grid,
    .checkout-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .cart-item {
        grid-template-columns: 80px 1fr;
    }
    
    .cart-item-remove {
        grid-column: 1 / -1;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .cookie-content {
        flex-direction: column;
    }
}