/* =============================================
   商品詳情頁專屬樣式
   ============================================= */

/* =============================================
   產品描述區域 - 手機版響應式設計
   ============================================= */

/* 產品描述容器基本樣式 */
#productDescription, #productParameter {
    line-height: 1.8;
    color: var(--text-primary);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* 產品描述內的所有圖片自適應 */
#productDescription img, #productParameter img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
    margin: 15px auto;
    border-radius: 4px;
}

/* 產品描述內的表格響應式處理 */
#productDescription table {
    width: 100% !important;
    max-width: 100%;
    border-collapse: collapse;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 15px 0;
}

#productParameter table {
    width: 100% !important;
    max-width: 100%;
    border-collapse: collapse;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 15px 0;
}

#productDescription table td, #productParameter table td,
#productDescription table th, #productParameter table th {
    padding: 8px 12px;
    border: 1px solid #ddd;
    word-wrap: break-word;
}

/* 產品描述內的影片響應式 */
#productDescription iframe, #productParameter iframe,
#productDescription video,#productParameter video {
    max-width: 100% !important;
    height: auto !important;
    display: block;
    margin: 15px auto;
}

/* 產品描述內的文字內容 */
#productDescription p,#productParameter p {
    margin-bottom: 15px;
    font-size: 15px;
}

#productDescription h1,  #productParameter h1,
#productDescription h2, #productParameter h2,
#productDescription h3, #productParameter h3,
#productDescription h4, #productParameter h4,
#productDescription h5, #productParameter h5,
#productDescription h6, #productParameter h6 {
    margin-top: 20px;
    margin-bottom: 15px;
    font-weight: 600;
}

#productDescription ul, #productParameter ul,
#productDescription ol, #productParameter ol {
    padding-left: 25px;
    margin-bottom: 15px;
}

#productDescription li,#productParameter li {
    margin-bottom: 8px;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 15px !important;
    }

    /* 手機版產品描述優化 */
    #productDescription, #productParameter {
        padding: 15px;
        font-size: 14px;
        line-height: 1.6;
    }

    #productDescription p, #productParameter p{
        font-size: 14px;
        margin-bottom: 12px;
    }

    #productDescription h1,  #productParameter h1 { font-size: 22px; }
    #productDescription h2, #productParameter h2  { font-size: 20px; }
    #productDescription h3, #productParameter h3  { font-size: 18px; }
    #productDescription h4, #productParameter h4  { font-size: 16px; }
    #productDescription h5,
    #productDescription h6, 
    #productParameter h5,
    #productParameter h6 { font-size: 14px; }


    /* 手機版圖片間距調整 */
    #productDescription img ,#productParameter img {
        margin: 10px auto;
    }

    /* 手機版表格字體大小 */
    #productDescription table ,#productParameter table {
        font-size: 13px;
/*        display: block;*/
        overflow-x: auto;
        white-space: nowrap;
    }

        #productDescription table td, #productParameter table td,
        #productDescription table th, #productParameter table th {
            padding: 6px 8px;
            font-size: 12px;
        }

    /* 手機版列表縮進 */
        #productDescription ul, #productParameter ul,
        #productDescription ol, #productParameter ol {
            padding-left: 20px;
        }

    /* 手機版 iframe 響應式容器 */
        #productDescription iframe, #productParameter iframe {
            width: 100% !important;
            min-height: 200px;
        }
}

/* 載入中動畫 */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-spinner {
    animation: spin 0.8s linear infinite;
}

/* 產品圖片區 */
.product-image-section {
    position: relative;
}

.product-main-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: transform 0.3s ease;
}

.product-main-image:hover {
    transform: scale(1.02);
}

.product-thumbnails {
    margin-top: 15px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.thumbnail {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border: 2px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.thumbnail:hover {
    border-color: #1976d2;
    transform: scale(1.05);
}

.thumbnail.active {
    border-color: #1976d2;
    box-shadow: 0 0 8px rgba(25, 118, 210, 0.3);
}

/* 產品資訊區 */
.product-info-section {
    padding: 20px;
}

.brand-name {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.product-tags {
    margin: 15px 0;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.product-tag {
    background: #FF5722;
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

/* 評分 */
.product-rating {
    margin: 15px 0;
}

.stars {
    display: inline-block;
    color: #ffc107;
    font-size: 18px;
}

.rating-text {
    margin-left: 10px;
    color: var(--text-secondary);
    font-size: 14px;
}

/* 價格區 */
.price-section {
    margin: 20px 0;
}

.price-main {
    font-size: 32px;
    color: #d32f2f;
    font-weight: bold;
}

.price-original {
    font-size: 20px;
    color: var(--text-tertiary);
    text-decoration: line-through;
    margin-left: 10px;
}

/* 商品規格 */
.product-specs {
    margin: 20px 0;
    padding: 15px;
    background: #f5f5f5;
    border-radius: 4px;
}

.spec-item {
    margin-bottom: 10px;
}

.spec-label {
    font-weight: bold;
    margin-right: 10px;
}

/* 按鈕 */
.btn-add-to-cart {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    margin-right: 10px;
    transition: background 0.3s ease;
}

.btn-add-to-cart:hover {
    background: var(--primary-hover);
}

.btn-wishlist {
    background: #fff;
    color: var(--text-primary);
    border: 1px solid #ddd;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-wishlist:hover {
    background: #f5f5f5;
    border-color: var(--text-tertiary);
}

/* 配送資訊 */
.shipping-info {
    margin: 20px 0;
    padding: 15px;
    background: #f0f7ff;
    border-radius: 4px;
}

/* 庫存資訊 */
.stock-info {
    margin: 15px 0;
    padding: 10px;
    border-radius: 4px;
}

/* 產品標籤頁 */
.product-tabs {
    margin-top: 40px;
}

.nav-tabs .nav-link {
    color: var(--text-secondary);
    font-weight: 600;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 12px 24px;
}

.nav-tabs .nav-link.active {
    color: #1976d2;
    border-bottom-color: #1976d2;
    background: none;
}

.tab-content {
    padding: 30px 0;
}

/* 評價區 */
.review-count-badge {
    display: inline-block;
    background: #1976d2;
    color: white;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 5px;
}

.review-summary {
    display: flex;
    gap: 40px;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 8px;
    margin-bottom: 30px;
}

.review-summary-left {
    flex: 0 0 200px;
    text-align: center;
}

.average-rating {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.rating-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--text-primary);
    line-height: 1;
}

.rating-stars {
    color: #ffc107;
    font-size: 24px;
    margin: 10px 0;
}

.rating-count {
    color: var(--text-secondary);
    font-size: 14px;
}

.review-summary-right {
    flex: 1;
}

.rating-bar-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.star-label {
    flex: 0 0 50px;
    color: var(--text-secondary);
    font-size: 14px;
}

.progress-bar-container {
    flex: 1;
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: #ffc107;
    transition: width 0.3s ease;
}

.count-label {
    flex: 0 0 40px;
    text-align: right;
    color: var(--text-secondary);
    font-size: 14px;
}

/* 評價篩選 */
.review-filters {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-group label {
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0;
}

.filter-select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

/* 評價列表 */
.reviews-list {
    margin-bottom: 30px;
}

.review-item {
    padding: 24px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    margin-bottom: 20px;
    background: #fff;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.reviewer-info {
    display: flex;
    gap: 15px;
}

.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #1976d2;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 20px;
}

.reviewer-details {
    flex: 1;
}

.reviewer-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.review-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: center;
    font-size: 14px;
}

.review-rating {
    color: #ffc107;
}

.review-date {
    color: var(--text-tertiary);
}

.verified-purchase {
    color: var(--primary-color);
    font-size: 13px;
}

.review-content {
    margin-bottom: 15px;
}

.review-title {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.review-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

.review-images {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.review-image {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.2s ease;
}

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

/* 商家回覆 */
.merchant-reply {
    margin-top: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-left: 3px solid var(--primary-color);
    border-radius: 4px;
}

.merchant-reply-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: var(--primary-color);
    font-size: 14px;
}

.merchant-reply-header i {
    font-size: 16px;
}

.merchant-reply-header strong {
    color: var(--text-primary);
}

.merchant-reply-header .reply-date {
    margin-left: auto;
    color: var(--text-tertiary);
    font-size: 12px;
}

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

/* 無評價狀態 */
.no-reviews {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

.no-reviews i {
    font-size: 64px;
    margin-bottom: 20px;
    color: #ddd;
}

.no-reviews p {
    font-size: 18px;
    margin-bottom: 20px;
}

/* 分頁 */
.review-pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.page-btn {
    padding: 8px 16px;
    border: 1px solid #ddd;
    background: white;
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.page-btn:hover {
    background: #f5f5f5;
}

.page-btn.active {
    background: #1976d2;
    color: white;
    border-color: #1976d2;
}

/* 相關商品 */
.related-products-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid #e0e0e0;
}

.related-products-section h3 {
    font-size: 24px;
    margin-bottom: 30px;
    text-align: center;
}

.related-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
    align-items: stretch;
}

/* =============================================
   手機版響應式優化（額外增強）
   ============================================= */

@media (max-width: 992px) {
    /* 平板尺寸優化 */
    .product-title {
        font-size: 24px;
    }

    .price-main {
        font-size: 28px;
    }
}

@media (max-width: 768px) {
    /* 手機版整體佈局 */
    .product-container {
        padding: 10px;
    }

    .product-info-section {
        padding: 15px 0;
    }

    /* 手機版商品標題 */
    .product-title {
        font-size: 20px;
        margin-bottom: 10px;
    }

    /* 手機版價格 */
    .price-main {
        font-size: 24px;
    }

    .price-original {
        font-size: 16px;
    }

    /* 手機版按鈕 */
    .btn-add-to-cart,
    .btn-wishlist {
        width: 100%;
        margin-bottom: 10px;
        margin-right: 0;
        padding: 12px 20px;
        font-size: 15px;
    }

    /* 手機版商品規格 */
    .product-specs {
        padding: 12px;
        font-size: 14px;
    }

    /* 手機版配送資訊 */
    .shipping-info {
        padding: 12px;
        font-size: 14px;
    }

    /* 手機版標籤頁 */
    .product-tabs {
        margin-top: 30px;
    }

    .nav-tabs .nav-link {
        padding: 10px 15px;
        font-size: 14px;
    }

    .tab-content {
        padding: 20px 0;
    }

    /* 手機版評價摘要 */
    .review-summary {
        flex-direction: column;
        gap: 20px;
        padding: 20px;
    }

    .review-summary-left {
        flex: none;
    }

    /* 手機版評價篩選 */
    .review-filters {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }

    .filter-group {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .filter-select {
        width: 100%;
    }

    /* 手機版評價項目 */
    .review-item {
        padding: 15px;
    }

    .reviewer-avatar {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .reviewer-info {
        gap: 10px;
    }

    .review-meta {
        font-size: 12px;
        gap: 10px;
    }

    .review-title {
        font-size: 15px;
    }

    .review-text {
        font-size: 14px;
    }

    .review-images {
        gap: 8px;
        flex-wrap: wrap;
    }

    .review-image {
        width: 80px;
        height: 80px;
    }

    /* 手機版商家回覆 */
    .merchant-reply {
        padding: 12px;
        font-size: 13px;
    }

    /* 手機版麵包屑 */
    .breadcrumb {
        font-size: 13px;
        padding: 8px 0;
    }

    /* 手機版縮圖 */
    .thumbnail {
        width: 60px;
        height: 60px;
    }

    /* 手機版相關商品 */
    .related-products-section {
        margin-top: 40px;
        padding-top: 30px;
    }

    .related-products-section h3 {
        font-size: 20px;
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    /* 超小螢幕優化 */
    .product-title {
        font-size: 18px;
    }

    .price-main {
        font-size: 22px;
    }

    .brand-name {
        font-size: 12px;
    }

    .product-tag {
        font-size: 11px;
        padding: 3px 10px;
    }

    .stars {
        font-size: 16px;
    }

    .rating-text {
        font-size: 12px;
    }

    .thumbnail {
        width: 50px;
        height: 50px;
    }

    #productDescription {
        padding: 10px;
        font-size: 13px;
    }

    #productDescription p {
        font-size: 13px;
    }

    #productDescription h1 { font-size: 20px; }
    #productDescription h2 { font-size: 18px; }
    #productDescription h3 { font-size: 16px; }
    #productDescription h4,
    #productDescription h5,
    #productDescription h6 { font-size: 14px; }
}