/**
 * Products CSS - Product List and Detail Pages
 * D-01: Category tabs for navigation
 * D-06: Classic numbered pagination
 */

/* ========== Section Header ========== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 2rem;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-gray);
    margin-bottom: 0;
}

/* ========== Category Tabs (D-01) ========== */
.category-tabs {
    display: flex;
    gap: var(--spacing-sm);
    overflow-x: auto;
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-xl);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Hide scrollbar Firefox */
}

.category-tabs::-webkit-scrollbar {
    display: none; /* Hide scrollbar Chrome/Safari */
}

.category-tab {
    flex-shrink: 0;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--bg-white);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-dark);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.category-tab:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.category-tab.active {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
}

/* ========== Search Form (D-05) ========== */
.search-form {
    max-width: 600px;
    margin-bottom: var(--spacing-xl);
}

.search-input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    border-color: var(--primary-blue);
}

.search-btn,
.clear-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    white-space: nowrap;
}

/* ========== Product Grid ========== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

/* ========== Pagination (D-06) ========== */
.pagination-wrapper {
    margin-top: var(--spacing-2xl);
}

.pagination {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.pagination-list {
    display: flex;
    gap: var(--spacing-xs);
    list-style: none;
    margin: 0;
    padding: 0;
}

.pagination-item {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
}

.pagination-item a {
    display: block;
    width: 100%;
    height: 100%;
    line-height: 38px;
    text-align: center;
    color: var(--text-dark);
    text-decoration: none;
}

.pagination-item:hover:not(.disabled):not(.active) {
    border-color: var(--primary-blue);
}

.pagination-item:hover:not(.disabled):not(.active) a {
    color: var(--primary-blue);
}

.pagination-item.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
}

.pagination-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--text-gray);
    margin: 0;
}

/* ========== Empty State ========== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
}

.empty-state-icon {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.empty-state-text {
    font-size: 1.125rem;
    color: var(--text-gray);
    margin-bottom: var(--spacing-lg);
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

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

/* ========== Product Detail Page ========== */
.product-detail {
    padding: var(--spacing-xl) 0 var(--spacing-2xl);
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
}

.breadcrumb a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.breadcrumb-separator {
    color: var(--text-light);
}

.breadcrumb-current {
    color: var(--text-dark);
    font-weight: 500;
}

/* Product Detail Grid */
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-lg);
}

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

.product-main-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: zoom-in;
    background: var(--bg-light);
    aspect-ratio: 4/3;
}

.product-main-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform var(--transition-normal);
}

.zoom-hint {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.product-main-image:hover .zoom-hint {
    opacity: 1;
}

/* Thumbnail Strip */
.product-thumbnails {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    overflow-x: auto;
    padding: var(--spacing-xs) 0;
    -webkit-overflow-scrolling: touch;
}

.product-thumb {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    padding: 0;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    background: var(--bg-light);
    transition: border-color var(--transition-fast);
}

.product-thumb:hover {
    border-color: var(--primary-blue);
}

.product-thumb.active {
    border-color: var(--primary-blue);
}

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

/* Product Info */
.product-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.product-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
    line-height: 1.3;
}

.product-model {
    font-size: 0.9375rem;
    color: var(--text-gray);
    margin: 0;
}

.product-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-dark);
}

.product-description p {
    margin-bottom: var(--spacing-sm);
}

.product-description p:last-child {
    margin-bottom: 0;
}

/* Specifications */
.product-specs {
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.specs-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0 0 var(--spacing-md);
}

.specs-content {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-dark);
}

/* Product Actions */
.product-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.btn-download,
.btn-quote {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-download svg,
.btn-quote svg {
    flex-shrink: 0;
}

/* ========== Lightbox Modal ========== */
.lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.lightbox-modal.active {
    visibility: visible;
    opacity: 1;
}

.lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
}

.lightbox-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
}

.lightbox-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
    transition: background var(--transition-fast);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-main {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 90%;
    max-height: 80vh;
}

.lightbox-main-image {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    transition: opacity var(--transition-fast);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev { left: var(--spacing-md); }
.lightbox-next { right: var(--spacing-md); }

.lightbox-thumbnails {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    overflow-x: auto;
    max-width: 90%;
    padding: var(--spacing-xs) 0;
}

.lightbox-thumb {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    padding: 0;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    background: transparent;
    transition: border-color var(--transition-fast);
}

.lightbox-thumb:hover {
    border-color: rgba(255, 255, 255, 0.5);
}

.lightbox-thumb.active {
    border-color: white;
}

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

/* ========== Responsive ========== */
@media (max-width: 1199px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 991px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .section-title {
        font-size: 1.75rem;
    }

    .product-title {
        font-size: 1.5rem;
    }

    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }

    .lightbox-close {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
}

@media (max-width: 767px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .section {
        padding: var(--spacing-lg) 0;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .category-tabs {
        padding: var(--spacing-xs) 0;
    }

    /* Search form - full width on mobile */
    .search-form {
        max-width: 100%;
    }

    .search-input-wrapper {
        flex-direction: column;
    }

    .search-input {
        width: 100%;
        min-width: 0;
    }

    .search-btn,
    .clear-btn {
        width: 100%;
        justify-content: center;
    }

    .pagination-list {
        flex-wrap: wrap;
        justify-content: center;
    }

    .product-actions {
        flex-direction: column;
    }

    .product-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .product-thumb {
        width: 60px;
        height: 60px;
    }

    .lightbox-main {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }

    .lightbox-thumbnails {
        max-width: 100%;
    }
}