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

:root {
    --primary-color: #0066cc;
    --secondary-color: #004080;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --dark-color: #212529;
    --font-size-base: 16px;
}

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

body.font-increased {
    --font-size-base: 18px;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* Header and Navigation */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

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

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

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

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--danger-color);
    color: var(--white);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
}

.font-increase-btn {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s ease;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.cta-button {
    display: inline-block;
    background: var(--white);
    color: var(--primary-color);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

/* Sections */
.what-you-learn,
.benefits,
.detailed-info,
.products {
    padding: 4rem 0;
}

.what-you-learn {
    background: var(--light-bg);
}

.what-you-learn h2,
.benefits h2,
.detailed-info h2,
.products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.learn-grid,
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.learn-item,
.benefit-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.learn-item:hover,
.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.learn-item svg,
.benefit-card svg {
    margin: 0 auto 1.5rem;
}

.learn-item h3,
.benefit-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

/* Detailed Info Section */
.info-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
}

.info-content h3 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: var(--primary-color);
}

.info-content p {
    margin-bottom: 1.5rem;
}

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

.product-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
}

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

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.product-info p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.price {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 1rem 0;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 5px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
}

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

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

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

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

/* Product Detail Page */
.product-detail {
    padding: 4rem 0;
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.product-main-image {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

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

.product-price {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin: 1.5rem 0;
}

.product-description h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--primary-color);
}

.product-description ul {
    margin: 1rem 0 1rem 2rem;
}

.product-description li {
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-add-cart {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Cart Page */
.cart-section {
    padding: 4rem 0;
    min-height: 60vh;
}

.empty-cart {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-cart svg {
    margin: 0 auto 2rem;
}

.empty-cart h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.cart-items {
    margin-bottom: 2rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 1rem;
    align-items: center;
}

.cart-item img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 5px;
}

.cart-item-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

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

.remove-item {
    background: var(--danger-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.remove-item:hover {
    background: #c82333;
}

.cart-summary {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.8rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
}

/* Checkout Page */
.checkout-section {
    padding: 4rem 0;
}

.checkout-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.checkout-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

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

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

.order-summary {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
    height: fit-content;
}

.order-summary h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-total {
    font-size: 1.5rem;
    font-weight: bold;
    padding-top: 1rem;
}

/* Success Page */
.success-section {
    padding: 4rem 0;
    min-height: 70vh;
}

.success-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.success-icon {
    margin-bottom: 2rem;
}

.success-icon svg {
    margin: 0 auto;
}

.success-content h1 {
    font-size: 2.5rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.success-message {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-color);
}

.success-info {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
    margin: 2rem 0;
    text-align: left;
}

.success-info h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.success-info ul {
    list-style: none;
}

.success-info li {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.success-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.success-note {
    background: #fff3cd;
    padding: 1.5rem;
    border-radius: 5px;
    border-left: 4px solid var(--warning-color);
    margin-top: 2rem;
    text-align: left;
}

/* Contact Page */
.contact-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 3rem 0;
    text-align: center;
}

.contact-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-section {
    padding: 4rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.info-icon {
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.info-note {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

.contact-form-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

/* Blog Post */
.blog-post {
    padding: 4rem 0;
}

.post-header {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
}

.post-meta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.post-category {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.post-date,
.post-read-time {
    color: #666;
    font-size: 0.9rem;
}

.post-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.post-excerpt {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1.5rem;
}

.post-author {
    display: flex;
    justify-content: center;
    align-items: center;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--dark-color);
}

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

.post-featured-image {
    max-width: 900px;
    margin: 0 auto 3rem;
}

.post-featured-image img {
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.post-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.post-content h2 {
    font-size: 2rem;
    margin: 2.5rem 0 1rem;
    color: var(--primary-color);
}

.post-content h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--dark-color);
}

.post-content p {
    margin-bottom: 1.5rem;
}

.post-content ul,
.post-content ol {
    margin: 1.5rem 0 1.5rem 2rem;
}

.post-content li {
    margin-bottom: 0.75rem;
}

.post-cta {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    margin: 3rem 0;
}

.post-cta h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.post-footer {
    max-width: 800px;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: var(--light-bg);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-color);
}

.post-share {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.share-link {
    color: var(--text-color);
    transition: color 0.3s ease;
}

.share-link:hover {
    color: var(--primary-color);
}

.related-posts {
    max-width: 1200px;
    margin: 4rem auto 0;
}

.related-posts h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

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

.related-post-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.related-post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

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

.related-post-card h4 {
    padding: 1.5rem;
    color: var(--dark-color);
}

.read-more {
    color: var(--primary-color);
    padding: 0 1.5rem 1.5rem;
    display: block;
    font-weight: 600;
}

/* Footer */
footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-col h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-col p {
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

.footer-col ul li {
    margin-bottom: 0.5rem;
}

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

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

.social-links a {
    transition: transform 0.3s ease;
}

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

.contact-info li {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
    margin-bottom: 1rem;
}

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

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 -5px 20px rgba(0,0,0,0.2);
    padding: 2rem;
    z-index: 2000;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
}

.cookie-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.cookie-content p {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.btn-accept,
.btn-reject {
    padding: 0.75rem 2rem;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-accept {
    background: var(--success-color);
    color: var(--white);
}

.btn-accept:hover {
    background: #218838;
}

.btn-reject {
    background: var(--danger-color);
    color: var(--white);
}

.btn-reject:hover {
    background: #c82333;
}

/* Notification */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: var(--success-color);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    z-index: 3000;
    transform: translateX(400px);
    transition: transform 0.4s ease;
}

.notification.show {
    transform: translateX(0);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .product-detail-grid,
    .checkout-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .cart-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cart-item img {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .success-actions {
        flex-direction: column;
    }
    
    .cookie-buttons {
        flex-direction: column;
    }
}