/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #03ac0e;
    --primary-dark: #028a0b;
    --secondary-color: #ff5722;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --border-color: #e5e5e5;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-hover: #f8f8f8;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5;
    padding-bottom: 75px;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

/* Header Styles */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: none;
}

@media (min-width: 769px) {
    .header {
        display: block;
    }
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 24px;
}

.logo img {
    height: 40px;
    width: auto;
}

.header-center {
    flex: 1;
    max-width: 600px;
}

.search-box {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(3, 172, 14, 0.1);
}

.search-box input {
    flex: 1;
    padding: 10px 16px;
    border: none;
    outline: none;
    font-size: 14px;
}

.search-btn {
    padding: 10px 16px;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.search-btn:hover {
    background: var(--primary-dark);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.login-btn {
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

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

.register-btn:hover {
    background: var(--primary-dark);
}

.badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: var(--secondary-color);
    color: white;
    font-size: 10px;
    padding: 2px 5px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

/* Navigation Bar */
.nav-bar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 0;
}

.nav-list {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 0;
    position: relative;
    transition: var(--transition);
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

/* Mobile Header */
.mobile-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: block;
}

@media (min-width: 769px) {
    .mobile-header {
        display: none;
    }
}

.mobile-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    gap: 12px;
}

.menu-btn,
.mobile-icon-btn {
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.mobile-logo img {
    height: 32px;
    width: auto;
}

.mobile-search {
    display: flex;
    padding: 0 16px 12px;
    gap: 8px;
}

.mobile-search input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    outline: none;
}

.mobile-search .search-btn {
    padding: 10px 14px;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-primary);
    z-index: 10000;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
    left: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 16px;
}

.mobile-nav-list {
    list-style: none;
    padding: 16px;
}

.mobile-nav-link {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 4px;
    font-weight: 500;
    transition: var(--transition);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--bg-hover);
    color: var(--primary-color);
}

/* Breadcrumb */
.breadcrumb {
    padding: 16px 0;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    font-size: 12px;
    color: var(--text-light);
}

.breadcrumb-list a {
    color: var(--text-light);
    transition: var(--transition);
}

.breadcrumb-list a:hover {
    color: var(--primary-color);
}

.breadcrumb-list li.active {
    color: var(--text-primary);
    font-weight: 500;
}

/* Product Detail Grid */
.product-detail {
    margin-bottom: 32px;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

@media (min-width: 769px) {
    .product-grid {
        grid-template-columns: 380px 1fr 320px;
        align-items: start;
    }
}

/* Product Gallery */
.product-gallery {
    position: relative;
}

.gallery-main {
    position: relative;
    margin-bottom: 12px;
}

.main-image-wrapper {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

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

.main-image-wrapper:hover .main-image {
    transform: scale(1.05);
}

.image-counter {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0,0,0,0.6);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
}

.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.9);
    border: 1px solid var(--border-color);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    opacity: 0;
}

.gallery-main:hover .gallery-nav {
    opacity: 1;
}

.gallery-nav:hover {
    background: white;
    box-shadow: var(--shadow-md);
}

.gallery-nav.prev {
    left: 12px;
}

.gallery-nav.next {
    right: 12px;
}

.gallery-thumbnails {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
}

.gallery-thumbnails::-webkit-scrollbar {
    display: none;
}

.thumbnail {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.thumbnail.active,
.thumbnail:hover {
    border-color: var(--primary-color);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Product Info */
.product-title {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 12px;
    color: var(--text-primary);
}

@media (min-width: 769px) {
    .product-title {
        font-size: 24px;
    }
}

.product-meta {
    margin-bottom: 16px;
}

.rating {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.stars {
    display: flex;
    gap: 2px;
}

.rating-value {
    font-weight: 600;
    color: var(--text-primary);
}

.rating-count,
.sold-count {
    color: var(--text-light);
}

.product-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.spec-label {
    font-size: 12px;
    color: var(--text-light);
}

.spec-value {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.stock-available {
    color: var(--primary-color);
}

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

.product-description-preview h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.product-description-preview p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Variations */
.product-variations {
    margin-bottom: 20px;
}

.variation-group {
    margin-bottom: 16px;
}

.variation-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.variation-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.variation-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    background: var(--bg-primary);
}

.variation-btn:hover {
    border-color: var(--primary-color);
}

.variation-btn.active {
    border-color: var(--primary-color);
    background: rgba(3, 172, 14, 0.05);
    color: var(--primary-color);
}

/* Purchase Card */
.purchase-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    position: sticky;
    top: 140px;
}

.price-section {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.original-price {
    font-size: 14px;
    color: var(--text-light);
    text-decoration: line-through;
    margin-bottom: 4px;
}

.current-price {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.discount-badge {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
}

.quantity-section {
    margin-bottom: 20px;
}

.quantity-section label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.qty-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 18px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.qty-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.quantity-control input {
    width: 60px;
    height: 36px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 500;
    -moz-appearance: textfield;
}

.quantity-control input::-webkit-outer-spin-button,
.quantity-control input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.stock-info {
    font-size: 12px;
    color: var(--text-light);
}

.subtotal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.subtotal span:first-child {
    font-size: 14px;
    color: var(--text-secondary);
}

.subtotal-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 16px;
}

.btn-primary,
.btn-secondary {
    width: 100%;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(3, 172, 14, 0.05);
}

.guarantee-info {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--text-secondary);
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Section Card */
.section-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.section-card h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

/* Description Content */
.description-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 20px 0 12px;
    color: var(--text-primary);
}

.description-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.description-content ul {
    list-style: none;
    padding-left: 0;
}

.description-content li {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
}

.description-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 600;
}

/* Images Grid */
.images-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 769px) {
    .images-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.image-item {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

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

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

/* Specifications Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid var(--border-color);
}

.specs-table tr:last-child {
    border-bottom: none;
}

.specs-table td {
    padding: 12px 0;
    font-size: 14px;
}

.specs-table td:first-child {
    width: 40%;
    color: var(--text-secondary);
    font-weight: 500;
}

.specs-table td:last-child {
    color: var(--text-primary);
}

/* Reviews Section */
.reviews-summary {
    display: flex;
    gap: 40px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .reviews-summary {
        flex-direction: column;
        gap: 20px;
    }
}

.summary-rating {
    text-align: center;
    min-width: 150px;
}

.big-rating {
    font-size: 48px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stars-large {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.total-reviews {
    font-size: 14px;
    color: var(--text-light);
}

.rating-breakdown {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.breakdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.breakdown-item span:first-child {
    width: 20px;
    font-weight: 500;
}

.breakdown-item span:last-child {
    width: 40px;
    text-align: right;
    color: var(--text-light);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* Review Filters */
.review-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    overflow-x: auto;
    scrollbar-width: none;
}

.review-filters::-webkit-scrollbar {
    display: none;
}

.filter-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(3, 172, 14, 0.05);
}

/* Review List */
.review-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.review-item {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.review-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.reviewer-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.reviewer-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.reviewer-info {
    flex: 1;
}

.reviewer-name {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 2px;
}

.review-date {
    font-size: 12px;
    color: var(--text-light);
}

.review-stars {
    display: flex;
    gap: 2px;
}

.review-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Review Pagination */
.review-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.page-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.page-btn:hover,
.page-btn.active {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(3, 172, 14, 0.05);
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.view-all {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 500;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 640px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 769px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* Product Card */
.product-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.product-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.product-card-image {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    position: relative;
}

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

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

.product-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--secondary-color);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.wishlist-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.wishlist-btn:hover {
    transform: scale(1.1);
}

.wishlist-btn.active svg {
    fill: var(--secondary-color);
    stroke: var(--secondary-color);
}

.product-card-info {
    padding: 12px;
}

.product-card-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.product-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 12px;
}

.product-card-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
}

.product-card-sold {
    color: var(--text-light);
}

.product-card-price {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.product-card-original-price {
    font-size: 12px;
    color: var(--text-light);
    text-decoration: line-through;
    margin-left: 4px;
}

/* Products Carousel */
.products-carousel {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 8px;
}

.products-carousel::-webkit-scrollbar {
    display: none;
}

.products-carousel .product-card {
    flex-shrink: 0;
    width: 160px;
}

@media (min-width: 640px) {
    .products-carousel .product-card {
        width: 200px;
    }
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 48px 0 24px;
    margin-bottom: 75px;
}

@media (min-width: 769px) {
    .footer {
        margin-bottom: 0;
    }
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-bottom: 32px;
}

@media (min-width: 769px) {
    .footer-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.footer-col h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

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

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

.footer-col a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.app-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.app-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.app-btn:hover {
    border-color: var(--primary-color);
    background: var(--bg-hover);
}

.app-btn div {
    display: flex;
    flex-direction: column;
}

.app-btn small {
    font-size: 11px;
    color: var(--text-secondary);
}

.app-btn strong {
    font-size: 14px;
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-light);
}

/* Mobile Sticky Navigation */
.mobile-sticky-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    z-index: 9999;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

@media (min-width: 769px) {
    .mobile-sticky-nav {
        display: none;
    }
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    color: var(--text-secondary);
    font-size: 11px;
    position: relative;
    transition: var(--transition);
}

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

.nav-item svg {
    width: 24px;
    height: 24px;
}

.nav-badge {
    position: absolute;
    top: 0;
    right: 8px;
    background: var(--secondary-color);
    color: white;
    font-size: 10px;
    padding: 2px 5px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

/* Cart Drawer */
.cart-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    z-index: 10000;
    transition: var(--transition);
}

@media (min-width: 769px) {
    .cart-drawer {
        width: 380px;
    }
}

.cart-drawer.active {
    right: 0;
}

.cart-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
}

.cart-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    max-width: 380px;
}

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.cart-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.cart-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.empty-cart {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
}

.empty-cart svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

.cart-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.cart-item-image {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
}

.cart-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cart-item-info {
    flex: 1;
}

.cart-item-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

.cart-item-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
}

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

.cart-item-qty button {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    margin-bottom: 16px;
    font-size: 16px;
    font-weight: 600;
}

.btn-checkout {
    width: 100%;
    padding: 14px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-checkout:hover {
    background: var(--primary-dark);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    z-index: 10001;
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (min-width: 769px) {
    .toast {
        bottom: 40px;
    }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .container {
        padding: 0 12px;
    }
    
    .product-grid {
        padding: 16px;
    }
    
    .section-card {
        padding: 16px;
    }
    
    .product-title {
        font-size: 18px;
    }
    
    .current-price {
        font-size: 24px;
    }
    
    .purchase-card {
        position: static;
    }
    
    .action-buttons {
        flex-direction: row;
    }
    
    .btn-primary,
    .btn-secondary {
        flex: 1;
        padding: 12px 16px;
        font-size: 14px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-16 {
    margin-top: 16px;
}

.mb-16 {
    margin-bottom: 16px;
}

.hidden {
    display: none !important;
}