/* === PRODUCT CATALOG & CUSTOMER DETAILS === */

/* --- 1. 工具列、搜尋與排序 (Toolbar, Search & Sorting) --- */
.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: center;
    transition: all 0.3s ease;
    width: 100%;
}

#search-box {
    flex-grow: 1;
    min-width: 200px;
    font-family: inherit;
    font-size: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--input-bg);
    color: var(--text-primary);
    transition: border-color .2s, box-shadow .2s;
}

#search-box:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 25%, transparent);
}

.sort-container {
    position: relative;
    flex-shrink: 0;
}

.sort-options {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    background-color: var(--surface-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    z-index: 100;
    overflow: hidden;
    width: max-content;
}

.sort-options a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
    white-space: nowrap;
}

.sort-options a:hover {
    background-color: var(--bg-color);
    color: var(--text-primary);
}

#order-toggle-btn .icon-desc {
    display: none;
}

#order-toggle-btn[data-order="desc"] .icon-asc {
    display: none;
}

#order-toggle-btn[data-order="desc"] .icon-desc {
    display: block;
}

/* --- 2. 產品卡片與網格 (Product Grid & Cards) --- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: var(--surface-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

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

.product-card .image-container {
    width: 100%;
    padding-top: 100%;
    position: relative;
    background-color: var(--bg-color);
    overflow: hidden;
}

.product-card .product-image {
    --img-scale: 0.9;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 0.5rem;
    box-sizing: border-box;
    transform: scale(var(--img-scale, 0.9));
    transition: transform 0.3s ease;
}

.product-card:hover .product-image {
    transform: scale(calc(var(--img-scale, 0.9) * 1.05)) !important;
}

.product-card .product-info {
    padding: 1.25rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.product-card h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-card .price {
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: bold;
    margin: 0;
}

.product-card .price.price-empty {
    visibility: hidden;
}

/* --- 3. 顧客端產品詳情彈窗與輪播 (Customer Details Modal & Slider) --- */
#product-detail-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 1rem;
}

.image-gallery-customer {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.main-image-wrapper {
    width: 100%;
    position: relative;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.main-image-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 0.5rem;
    box-sizing: border-box;
    object-fit: contain;
    transition: transform 0.2s ease;
}

#detail-thumbnail-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.thumbnail-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.thumbnail-item {
    position: relative;
    width: 80px;
    height: 80px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    cursor: pointer;
    background-color: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.thumbnail-item.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color) 40%, transparent);
}

.thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 0.25rem;
    box-sizing: border-box;
}

/* 詳情資訊 */
#product-detail-info .price {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.product-description-display {
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--text-secondary);
}

#product-detail-info .details-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1.5rem;
    align-items: center;
    color: var(--text-secondary);
}

#product-detail-info .details-grid > dt {
    font-weight: 700;
}

#product-detail-info .barcode-display {
    background: #fff;
    padding: 10px;
    border-radius: var(--border-radius-sm);
    max-width: 250px;
    margin-top: 1rem;
}

#product-detail-info .barcode-display svg {
    width: 100%;
    height: auto;
    display: block;
}

/* 輪播 Slider */
.slider-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--border-radius-md);
    background-color: var(--bg-color);
    height: 0;
    padding-top: 100%;
}

.slider-wrapper {
    display: flex;
    transition: transform 0.4s ease-in-out;
    cursor: grab;
    user-select: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.slide {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
}

.slide img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.slider-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.4);
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.2s ease, background-color 0.2s;
}

.slider-container:hover .slider-nav-btn {
    opacity: 1;
}

.slider-nav-btn.prev {
    left: 10px;
}

.slider-nav-btn.next {
    right: 10px;
}

.slider-nav-btn:hover {
    background-color: rgba(0, 0, 0, 0.7);
}

.slider-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.dot.active {
    background-color: white;
}

/* --- 4. 圖片檢視燈箱 (Lightbox) --- */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    z-index: 1020;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s ease;
    overscroll-behavior: contain;
    touch-action: none;
}

.image-viewer:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
}

.image-viewer img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    cursor: grab;
    transition: transform 0.1s linear;
    transform-origin: center center;
    user-select: none;
    touch-action: pan-x pan-y;
}

.image-viewer img.panning {
    cursor: grabbing;
}

/* --- 5. 響應式：手機版 (<= 768px) --- */
@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: 1fr;
    }

    .product-grid.view-two-columns {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .product-grid.view-two-columns .product-card:has(.price.price-empty) h3 {
        white-space: initial;
        overflow: hidden;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }

    .product-grid.view-two-columns .product-card:has(.price.price-empty) .price {
        display: none;
    }

    .slider-nav-btn {
        display: none !important;
    }

    /* 顧客頁工具列 */
    .customer-page .toolbar {
        display: grid;
        grid-template-columns: 44px 1fr 1fr 44px;
        gap: 0.5rem;
        align-items: center;
    }

    .customer-page #search-box {
        display: none;
    }

    .customer-page #search-toggle-btn,
    .customer-page #category-toggle-btn,
    .customer-page #sort-btn,
    .customer-page #order-toggle-btn {
        display: inline-flex;
        width: 100%;
        height: 44px;
        padding: 0;
        justify-content: center;
    }

    .customer-page #category-toggle-btn,
    .customer-page #sort-btn {
        padding: 0 0.75rem;
    }

    .customer-page .toolbar.search-active {
        grid-template-columns: 1fr 44px 44px;
    }

    .customer-page .toolbar.search-active #search-box {
        display: block;
        width: 100%;
        height: 44px;
    }

    .customer-page .toolbar.search-active #search-toggle-btn,
    .customer-page .toolbar.search-active #category-toggle-btn {
        display: none;
    }

    .customer-page .toolbar.search-active .sort-container {
        width: auto;
    }

    .customer-page .toolbar.search-active #sort-btn {
        width: 44px;
        padding: 0;
    }

    .customer-page .toolbar.search-active #sort-btn span {
        display: none;
    }

    #detail-modal-container .modal-content {
        height: auto;
        max-height: 85vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        width: 95%;
    }
}

/* --- 6. 響應式：平板與桌面 (>= 768px) --- */
@media (min-width: 768px) {
    #product-detail-layout {
        grid-template-columns: 350px 1fr;
        align-items: flex-start;
    }

    .image-gallery-customer {
        max-width: 350px;
    }

    #search-toggle-btn,
    #category-toggle-btn {
        display: none;
    }

    #search-box {
        display: block;
    }

    .customer-page .toolbar #search-box {
        flex-grow: 1;
    }

    #detail-modal-container .modal-content {
        height: auto;
        max-height: 85vh;
        overflow-y: auto;
        width: 90%;
        max-width: 900px;
    }
}