:root {
    --bg-dark: #1a1a2e;
    --bg-card: #16213e;
    --bg-header: #0f3460;
    --accent: #00d9a6;
    --accent-hover: #00b88d;
    --text-light: #ffffff;
    --text-muted: #a0a0b0;
    --text-dark: #1a1a2e;
    --danger: #e74c3c;
    --success: #2ecc71;
    --font: 'Segoe UI', 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font);
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-mode {
    background-color: #0d0d1a;
    --bg-card: #1e1e3a;
    --bg-header: #0a0a15;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-hover);
}

.site-header {
    background-color: var(--bg-header);
    padding: 15px 0;
    border-bottom: 2px solid var(--accent);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 24px;
    font-weight: bold;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s;
    text-transform: uppercase;
    font-size: 14px;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--accent);
}

.nav-actions .cart-link {
    color: var(--text-light);
    background-color: var(--accent);
    color: var(--text-dark);
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: bold;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 60vh;
}

.hero {
    background: linear-gradient(135deg, #0f3460, #1a1a2e);
    padding: 60px 40px;
    border-radius: 10px;
    margin-bottom: 40px;
    text-align: center;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.hero p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 25px;
    color: var(--text-muted);
}

.btn-primary, .btn-secondary, .btn-add-cart, .btn-buy-now {
    display: inline-block;
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.3s, transform 0.2s;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--accent);
    color: var(--text-dark);
}

.btn-add-cart {
    background-color: var(--accent);
    color: var(--text-dark);
    width: 100%;
    margin-top: 10px;
}

.btn-buy-now {
    background-color: var(--danger);
    color: var(--text-light);
    width: 100%;
    margin-top: 10px;
}

.advantages {
    margin-bottom: 40px;
}

.advantages h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 32px;
}

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

.advantage-card {
    background-color: var(--bg-card);
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    border-top: 3px solid var(--accent);
}

.advantage-card svg {
    color: var(--accent);
    margin-bottom: 15px;
}

.about-products {
    margin-bottom: 40px;
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 8px;
}

.about-products h2 {
    color: var(--accent);
    margin-bottom: 20px;
}

.about-products p {
    margin-bottom: 15px;
}

.catalog {
    margin-bottom: 40px;
}

.catalog h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 32px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 25px;
}

.product-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 217, 166, 0.2);
}

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

.product-card h3 {
    padding: 15px 15px 5px;
    font-size: 18px;
}

.product-card p {
    padding: 0 15px;
    color: var(--text-muted);
}

.product-card .price {
    padding: 5px 15px;
    font-size: 20px;
    font-weight: bold;
    color: var(--accent);
}

.product-card .btn-secondary {
    margin: 10px 15px 5px;
}

.stats-section {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.stats {
    display: flex;
    gap: 40px;
}

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

.stat-item strong {
    display: block;
    font-size: 28px;
    color: var(--accent);
}

.cta-block {
    text-align: center;
}

.video-frame {
    margin-bottom: 40px;
    text-align: center;
}

.video-frame h2 {
    margin-bottom: 20px;
}

.card-footer {
    padding: 15px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-page .product-detail {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.product-page .product-image {
    flex: 1 1 500px;
}

.product-page .product-image img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 10px;
}

.product-page .product-info {
    flex: 1 1 400px;
}

.product-page .product-info h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.product-page .rating {
    color: var(--accent);
    margin-bottom: 10px;
}

.product-page .price {
    font-size: 28px;
    color: var(--accent);
    margin-bottom: 15px;
}

.product-actions {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.breadcrumb {
    margin-bottom: 20px;
}

.cart-page h1, .checkout-page h1, .success-page h1, .contact-page h1, .about-page h1 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 36px;
}

#cart-items {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-card);
    padding: 20px;
    border-radius: 8px;
    flex-wrap: wrap;
    gap: 15px;
}

.cart-item img {
    width: 80px;
    height: 80px;
    object-fit: cover;
}

.cart-item-details {
    flex: 1;
    min-width: 200px;
}

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

.cart-item-quantity button {
    background-color: var(--accent);
    color: var(--text-dark);
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.cart-item-quantity span {
    min-width: 30px;
    text-align: center;
}

.remove-btn {
    background-color: var(--danger);
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
}

.cart-summary {
    text-align: right;
    margin-top: 20px;
    background-color: var(--bg-card);
    padding: 20px;
    border-radius: 8px;
}

.cart-summary p {
    font-size: 20px;
    margin-bottom: 15px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--text-muted);
    border-radius: 5px;
    background-color: var(--bg-card);
    color: var(--text-light);
}

.contact-info {
    background-color: var(--bg-card);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
}

.team-section {
    margin-top: 30px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.team-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.team-card img {
    border-radius: 50%;
    margin-bottom: 15px;
}

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

.success-page {
    text-align: center;
}

.success-page p {
    font-size: 18px;
    margin-bottom: 30px;
}

footer {
    background-color: var(--bg-header);
    padding: 30px 0 0;
    margin-top: 40px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    padding: 0 20px 20px;
}

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

.footer-links a {
    color: var(--text-muted);
    display: inline-block;
    padding: 3px 0;
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid var(--text-muted);
    text-align: center;
    padding: 15px 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-social {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-icon {
    color: var(--text-muted);
    transition: color 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.social-icon:hover {
    color: var(--accent);
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-header);
    color: var(--text-light);
    padding: 20px;
    box-shadow: 0 -5px 15px rgba(0,0,0,0.3);
    z-index: 1000;
    display: none;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.cookie-content p {
    flex: 1 1 400px;
}

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

.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--success);
    color: white;
    padding: 15px 20px;
    border-radius: 5px;
    display: none;
    z-index: 1001;
    max-width: 300px;
}