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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-color: #dee2e6;
    --success-color: #27ae60;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 5px 20px rgba(0,0,0,0.15);
    --font-size-base: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: var(--font-size-base);
}

body.font-small {
    --font-size-base: 14px;
}

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

.navbar {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    object-fit: cover;
}

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

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

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

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

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background-color: var(--accent-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;
}

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

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--border-color);
    color: var(--text-color);
}

.btn-secondary:hover {
    background-color: #adb5bd;
}

.features {
    padding: 80px 0;
    background-color: var(--white);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--primary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    background-color: var(--bg-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.feature-icon {
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-top: 60px;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

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

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

.about-products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
}

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

.terminology {
    padding: 80px 0;
    background-color: var(--white);
}

.terminology h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--primary-color);
}

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

.term-card {
    padding: 25px;
    border-left: 4px solid var(--secondary-color);
    background-color: var(--bg-color);
    border-radius: 5px;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.term-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

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

.products {
    padding: 80px 0;
    background-color: var(--white);
}

.products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: var(--primary-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.product-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 15px;
}

.product-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    min-height: 60px;
}

.product-card .price {
    font-size: 1.8rem;
    color: var(--secondary-color);
    font-weight: bold;
    margin: 15px 0;
}

.product-card .description {
    color: #666;
    margin-bottom: 20px;
    min-height: 60px;
}

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

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

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.footer-section p {
    margin-bottom: 10px;
    opacity: 0.9;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.footer-section ul li a:hover {
    opacity: 1;
}

.company-reg {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 10px;
}

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

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

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

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

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

.product-image-section img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
}

.product-info-section h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

.product-description {
    line-height: 1.8;
    margin-bottom: 30px;
    color: #555;
}

.product-features {
    background-color: var(--bg-color);
    padding: 25px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.product-features h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

.product-features ul li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-features ul li:before {
    content: "✓";
    color: var(--success-color);
    font-weight: bold;
    font-size: 1.2rem;
}

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

.product-actions .btn {
    flex: 1;
}

.product-specs {
    background-color: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.product-specs h2 {
    color: var(--primary-color);
    margin-bottom: 30px;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.spec-item {
    padding: 15px;
    background-color: var(--bg-color);
    border-radius: 5px;
}

.spec-label {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.cart-page {
    padding: 60px 0;
    min-height: 60vh;
}

.cart-page h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.cart-empty {
    text-align: center;
    padding: 60px 20px;
}

.cart-empty svg {
    margin-bottom: 20px;
    opacity: 0.5;
}

.cart-empty p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 30px;
}

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

.cart-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cart-item {
    display: grid;
    grid-template-columns: 120px 1fr auto;
    gap: 20px;
    padding: 20px;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.cart-item img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
}

.cart-item-info h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.cart-item-price {
    font-size: 1.3rem;
    color: var(--secondary-color);
    font-weight: bold;
    margin-bottom: 15px;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 10px;
}

.quantity-btn {
    width: 30px;
    height: 30px;
    border: 1px solid var(--border-color);
    background-color: var(--white);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

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

.quantity-input {
    width: 60px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 5px;
}

.cart-item-actions {
    display: flex;
    align-items: center;
}

.remove-btn {
    color: var(--accent-color);
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    transition: transform 0.3s;
}

.remove-btn:hover {
    transform: scale(1.2);
}

.cart-summary {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.cart-summary h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-row.total {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    border-bottom: none;
    margin-top: 10px;
}

.checkout-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.checkout-form h1 {
    color: var(--primary-color);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--primary-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.order-summary-checkout {
    background-color: var(--bg-color);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.order-summary-checkout h2 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

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

.success-page h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.success-page p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
}

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

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

.contact-info h1 {
    color: var(--primary-color);
    margin-bottom: 30px;
}

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

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

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.contact-form-container {
    background-color: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.contact-form h2 {
    color: var(--primary-color);
    margin-bottom: 30px;
}

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

.about-hero {
    text-align: center;
    margin-bottom: 60px;
}

.about-hero h1 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-hero p {
    font-size: 1.2rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
}

.about-content-section {
    margin-bottom: 80px;
}

.about-content-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.about-content-section p {
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

.team-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 50px;
}

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

.team-member {
    text-align: center;
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

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

.team-member img {
    width: 100%;
    max-width: 400px;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
}

.team-member h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.team-member p:first-of-type {
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: 15px;
}

.team-member p:last-of-type {
    color: #666;
    line-height: 1.6;
}

.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background-color: var(--success-color);
    color: var(--white);
    padding: 20px 30px;
    border-radius: 5px;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    animation: slideIn 0.3s ease-out;
}

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

.font-size-controls {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.font-btn {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}

.font-btn:hover {
    background-color: var(--secondary-color);
    transform: scale(1.05);
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    padding: 25px;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s ease-out;
}

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

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

.cookie-content h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.cookie-content p {
    margin-bottom: 20px;
    color: #555;
}

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

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

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 10px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .product-detail-container {
        grid-template-columns: 1fr;
    }
    
    .cart-content {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .cart-item {
        grid-template-columns: 1fr;
    }
    
    .cookie-buttons {
        flex-direction: column;
    }
}