/**
 * 详情页样式 - Product CSS
 * 包含图片画廊、产品信息、变体选择、Tab区、推荐产品等样式
 */

/* ========== 产品主体布局 ========== */
.product-main {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 40px;
    padding: 5px 0 40px;
}

/* ========== 图片画廊 ========== */
.product-gallery {
    position: sticky;
    top: 100px;
    align-self: start;
}

.gallery-main {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg-light);
    aspect-ratio: 1 / 1;
    margin-bottom: 12px;
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    cursor: zoom-in;
}

.gallery-main:hover img {
    transform: scale(1.05);
}

.product-badge-main {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    background: var(--color-sale);
    color: var(--color-white);
}

.gallery-thumbs-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
}

.gallery-thumbs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    flex: 1;
    min-width: 0;
}

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

.gallery-thumbs {
    scrollbar-width: none;
}

.gallery-arrow {
    flex: 0 0 28px;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: var(--color-bg-light);
    color: var(--color-text);
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    padding: 0;
    z-index: 1;
}

.gallery-arrow:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.gallery-arrow:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.gallery-arrow:disabled:hover {
    background: var(--color-bg-light);
    color: var(--color-text);
}

.gallery-thumb {
    flex: 0 0 calc((100% - 24px) / 4);
    min-width: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    aspect-ratio: 1 / 1;
}

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

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

/* ========== 产品信息区 ========== */
.product-info {
    padding: 10px 0;
}

.product-badges {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.product-badges span {
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
}

.product-title {
    font-family: var(--font-family);
    font-size: 26px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 10px;
}

/* 销量提示 */
.product-meta-info {
    margin-bottom: 12px;
}

.sold-info {
    font-size: 13px;
    color: var(--color-sale);
}

.sold-info strong {
    font-weight: 700;
}

/* 描述摘要 */
.product-desc-short {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: 16px;
}

/* 价格区域 */
.product-price-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    padding: 12px 0;
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.product-price-current {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
}

.product-price-compare {
    font-size: 16px;
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.product-price-save {
    font-size: 13px;
    color: var(--color-sale);
    font-weight: 600;
    background: #fef2f2;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

/* 库存提示 */
.product-stock-info {
    font-size: 13px;
    color: var(--color-sale);
    font-weight: 600;
    margin-bottom: 16px;
}

/* 变体选择 */
.product-variant-area {
    margin-bottom: 16px;
}

.variant-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.product-variant-area .form-control {
    max-width: 100%;
}

/* ========== 规格选择器 ========== */
.product-spec-area {
    margin-bottom: 14px;
}

.spec-group {
    margin-bottom: 14px;
}

.spec-group-name {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    color: var(--color-text);
}

.spec-group-values {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.spec-btn {
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 44px;
    text-align: center;
    user-select: none;
}

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

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

.spec-btn.disabled {
    border-color: #e0e0e0;
    color: #ccc;
    background: #f9f9f9;
    cursor: not-allowed;
    text-decoration: line-through;
}

.product-selected-spec {
    font-size: 13px;
    color: var(--color-text-light);
    margin-bottom: 12px;
    padding: 8px 12px;
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
}

.product-selected-spec strong {
    color: var(--color-text);
    font-weight: 600;
}

/* 数量 */
.product-quantity-area {
    margin-bottom: 16px;
}

.product-quantity-area > label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

/* 小计 */
.product-subtotal {
    font-size: 16px;
    margin-bottom: 20px;
    padding: 10px 0;
}

.product-subtotal strong {
    font-size: 20px;
    color: var(--color-primary);
}

/* 操作按钮 */
.product-actions {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

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

/* 查看购物车 */
.view-cart-link {
    text-align: center;
    margin-bottom: 16px;
}

.view-cart-link a {
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 600;
}

/* 折叠面板 */
.product-accordion {
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.accordion-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.accordion-header:hover {
    background: var(--color-bg-light);
}

.accordion-icon {
    margin-left: auto;
    transition: transform 0.3s ease;
    font-size: 12px;
}

.accordion-header.open .accordion-icon {
    transform: rotate(180deg);
}

.accordion-body {
    display: none;
    padding: 0 16px 16px;
    font-size: 13px;
    line-height: 1.7;
    color: var(--color-text-light);
}

.accordion-body.show {
    display: block;
}

/* 浏览提示 */
.viewing-info {
    font-size: 13px;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.viewing-info i {
    color: var(--color-primary);
}

/* ========== 产品Tab区 ========== */
.product-tabs-section {
    padding: 30px 0;
    border-top: 1px solid var(--color-border-light);
}

.product-tabs-section .tab-content {
    padding: 24px 0;
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-light);
}

.product-tabs-section .tab-pane h5 {
    font-size: 16px;
    margin-bottom: 12px;
    color: var(--color-text);
}

.product-tabs-section .tab-pane ul {
    padding-left: 20px;
    margin: 10px 0;
}

.product-tabs-section .tab-pane ul li {
    list-style: disc;
    margin-bottom: 6px;
}

/* ========== 产品网格布局 ========== */
.product-grid {
    display: grid;
    gap: 20px;
}

.product-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.product-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.product-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ========== 相关产品 ========== */
.related-section {
    padding: 50px 0 40px;
    border-top: 1px solid var(--color-border-light);
}

.related-section .section-title {
    font-family: var(--font-family-body);
    font-size: 22px;
    font-weight: 700;
    text-align: left;
    color: #232323;
    margin: 0 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 1px solid #e8e8e8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ========== 最近浏览 ========== */
.recently-section {
    padding: 40px 0 50px;
    border-top: 1px solid var(--color-border-light);
}

.recently-section .section-title {
    font-family: var(--font-family-body);
    font-size: 22px;
    font-weight: 700;
    text-align: left;
    color: #232323;
    margin: 0 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 1px solid #e8e8e8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-scroll-wrapper {
    position: relative;
    overflow: hidden;
}

.product-scroll {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 10px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.product-scroll::-webkit-scrollbar {
    height: 4px;
}

.product-scroll::-webkit-scrollbar-track {
    background: #f0f0f0;
    border-radius: 2px;
}

.product-scroll::-webkit-scrollbar-thumb {
    background: #cccccc;
    border-radius: 2px;
}

.product-scroll .product-card {
    flex: 0 0 220px;
    min-width: 220px;
}

/* ========== 分享弹窗 ========== */
.share-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.share-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.share-link:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.copy-link-area {
    display: flex;
    gap: 8px;
}

.copy-link-area .form-control {
    flex: 1;
}

/* ========== 响应式 ========== */
@media (max-width: 992px) {
    .product-main {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-gallery {
        position: static;
    }

    .product-title {
        font-size: 22px;
    }

    .product-grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }

    .product-scroll .product-card {
        flex: 0 0 180px;
        min-width: 180px;
    }
}

@media (max-width: 768px) {
    .product-main {
        gap: 20px;
    }

    .gallery-thumbs {
        gap: 6px;
    }

    .gallery-thumb {
        flex: 0 0 calc((100% - 12px) / 3);
    }

    .gallery-arrow {
        flex: 0 0 24px;
        width: 24px;
        height: 24px;
        font-size: 10px;
    }

    .product-actions {
        flex-wrap: wrap;
    }

    .product-actions .btn-primary {
        flex: 1 1 100%;
    }

    .product-grid-4,
    .product-grid-3 {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .related-section .section-title,
    .recently-section .section-title {
        font-size: 18px;
    }

    .product-scroll .product-card {
        flex: 0 0 150px;
        min-width: 150px;
    }

    .product-card-info {
        padding: 10px 2px;
    }

    .product-card-title {
        font-size: 12px;
    }

    .product-card-price {
        font-size: 13px;
    }

    /* 移动端Tab内容防溢出 */
    .tab-content {
        overflow-x: hidden;
    }

    .tab-pane iframe,
    .tab-pane video,
    .tab-pane embed,
    #descriptionContent iframe,
    #descriptionContent video,
    #descriptionContent embed {
        width: 100% !important;
        max-width: 100% !important;
        height: auto !important;
        min-height: 180px;
    }

    #descriptionContent img,
    .tab-pane img {
        max-width: 100%;
        height: auto;
    }

    #descriptionContent table,
    .tab-pane table {
        display: block;
        overflow-x: auto;
        max-width: 100%;
    }
}