/**
 * 产品详情页专属样式
 * 从 single-product.php 内联样式提取，条件加载仅 is_singular('product')
 */

/* ========== 1. 产品下架页面 ========== */
.product-unavailable { padding: 60px 20px; text-align: center; }
.unavailable-card { max-width: 600px; margin: 0 auto 40px; background: #fff; border-radius: 12px; padding: 40px; box-shadow: 0 2px 20px rgba(0,0,0,0.1); }
.unavailable-icon { font-size: 64px; margin-bottom: 20px; color: #f59e0b; }
.unavailable-title { font-size: 24px; color: #1f2937; margin-bottom: 12px; }
.unavailable-desc { font-size: 16px; color: #6b7280; margin-bottom: 30px; line-height: 1.6; }
.unavailable-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.unavailable-actions .btn { padding: 12px 24px; border-radius: 8px; text-decoration: none; font-weight: 500; display: inline-block; }
.unavailable-actions .btn-primary { background: #3b82f6; color: #fff; }
.unavailable-actions .btn-secondary { background: #f3f4f6; color: #374151; }
.related-products-section { margin-top: 60px; }
.related-products-title { font-size: 20px; color: #1f2937; margin-bottom: 24px; text-align: center; }
.related-products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.related-product-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.1); transition: transform 0.2s; }
.related-product-card:hover { transform: translateY(-4px); }
.related-product-link { text-decoration: none; color: inherit; }
.related-product-image { height: 200px; overflow: hidden; background: #f3f4f6; }
.related-product-img { width: 100%; height: 100%; object-fit: cover; }
.related-product-placeholder { display: flex; align-items: center; justify-content: center; height: 100%; color: #9ca3af; }
.related-product-info { padding: 16px; }
.related-product-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; color: #1f2937; }
.related-product-price { font-size: 18px; font-weight: 700; color: #3b82f6; }

/* ========== 2. 画廊视频缩略图 ========== */
.gallery-thumbs .video-thumb {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111;
    min-height: 60px;
    overflow: hidden;
}
.gallery-thumbs .video-thumb img {
    opacity: 0.7;
    transition: opacity 0.2s;
}
.gallery-thumbs .video-thumb:hover img {
    opacity: 1;
}
.gallery-thumbs .video-play-icon {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 24px;
    text-shadow: 0 0 6px rgba(0,0,0,0.7);
    z-index: 1;
    pointer-events: none;
}
.gallery-thumbs .video-placeholder {
    font-size: 32px;
    color: #fff;
}

/* ========== 3. 点赞按钮 ========== */
.btn-like-product {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: #fff;
    color: #374151;
    border: 1.5px solid #e5e7eb;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s;
}
.btn-like-product:hover {
    background: #fef2f2;
    border-color: #ef4444;
    color: #ef4444;
}
.btn-like-product.liked {
    background: #fef2f2;
    border-color: #ef4444;
    color: #ef4444;
}
.btn-like-product.liked .like-icon {
    fill: #ef4444;
}
.btn-like-product:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.like-icon {
    transition: fill 0.25s;
}
.like-text {
    font-weight: 500;
}
.like-count {
    color: #6b7280;
    font-size: 0.8125rem;
}

/* ========== 4. 核心参数概览 ========== */
.product-key-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0 20px;
    padding: 14px;
    background: var(--primary-light);
    border-radius: var(--radius);
    border: 1px solid rgba(37, 99, 235, 0.15);
}
.key-spec-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
    padding: 8px 12px;
    background: #fff;
    border-radius: var(--radius-sm);
    text-align: center;
}
.key-spec-label {
    font-size: .6875rem;
    color: var(--text-light);
    margin-bottom: 2px;
}
.key-spec-value {
    font-size: .875rem;
    font-weight: 700;
    color: var(--primary);
}

/* ========== 5. 别名显示 ========== */
.product-alias-display {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    padding: 6px 12px;
    background: var(--primary-light, #eff6ff);
    border-radius: 6px;
    font-size: 0.875rem;
}
.product-alias-display .alias-label {
    color: var(--text-light, #64748b);
    font-weight: 500;
}
.product-alias-display .alias-value {
    color: var(--primary, #2563eb);
    font-family: 'Courier New', monospace;
    font-weight: 600;
}

/* ========== 6. 视频区域 ========== */
.product-video-section {
    margin-top: 40px;
}
.video-container {
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}
.video-container video,
.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ========== 7. 规格参数表 ========== */
.spraydryer-specs {
    width: 100%;
    border-collapse: collapse;
}
.spraydryer-specs tr {
    border-bottom: 1px solid var(--border);
}
.spraydryer-specs tr:last-child {
    border-bottom: none;
}
.spraydryer-specs td {
    padding: 14px 18px;
    font-size: .9375rem;
}
.spraydryer-specs .spec-label {
    width: 35%;
    color: var(--text-light);
    background: var(--gray-50);
    font-weight: 500;
}
.spraydryer-specs .spec-value {
    color: var(--dark);
    font-weight: 600;
}

/* ========== 8. 增强供应商名片 ========== */
.supplier-card-enhanced {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--gray-50);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.supplier-avatar-large {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    overflow: hidden;
    background: #fff;
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.supplier-avatar-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.supplier-info-full {
    flex: 1;
    min-width: 0;
    padding: 0;
    margin: 0;
}
.supplier-name-row {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 10px;
    margin: 0;
    padding: 0;
}
.supplier-name-main {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
}
.badge-verified-lg {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    font-size: .75rem;
    font-weight: 600;
    border-radius: 100px;
}
.supplier-details-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}
.supplier-detail-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: .875rem;
    color: var(--text);
}
.supplier-detail-item a {
    color: var(--primary);
    text-decoration: none;
}
.supplier-detail-item a:hover {
    text-decoration: underline;
}

/* ========== 9. 供应商元信息行 ========== */
.supplier-meta-row {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    align-items: center;
    gap: 0 12px;
    margin: 0;
    padding: 4px 0 0 0;
}
.supplier-meta-row .supplier-rating-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    padding: 0;
}
.supplier-meta-row .supplier-details-row {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 0 12px;
    margin: 0;
    padding: 0;
}
.supplier-action-row {
    margin-top: 8px;
}
.supplier-action-row .btn {
    font-size: .8125rem;
    padding: 6px 16px;
}

/* ========== 10. 移动端响应式 768px ========== */
@media (max-width: 768px) {
    .product-key-specs { gap: 8px; padding: 10px; }
    .key-spec-item { min-width: 70px; padding: 6px 8px; }
    .spraydryer-specs .spec-label { width: 45%; padding: 12px; }
    .spraydryer-specs td { padding: 12px; font-size: .875rem; }
    .supplier-card-enhanced {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: flex-start;
        text-align: left;
        gap: 0 10px;
        padding: 12px 14px;
    }
    .supplier-avatar-large {
        width: 52px;
        height: 52px;
        flex-shrink: 0;
        border-width: 2px;
        margin-top: 4px;
    }
    .supplier-info-full {
        flex: 1;
        min-width: 0;
        padding: 0;
        margin: 0;
    }
    .supplier-name-row {
        display: flex;
        justify-content: flex-start;
        align-items: center;
        flex-wrap: wrap;
        gap: 5px;
        margin: 0;
        padding: 0;
    }
    .supplier-name-main {
        font-size: .9375rem;
    }
    .supplier-meta-row {
        display: flex;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 0 6px;
        margin: 0;
        padding: 4px 0 0 0;
    }
    .supplier-rating-row {
        display: flex;
        align-items: center;
        gap: 6px;
        margin: 0;
        padding: 0;
    }
    .supplier-meta-row .supplier-details-row {
        display: flex;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 0 6px;
        margin: 0;
        padding: 0;
    }
    .supplier-details-row {
        justify-content: flex-start;
        gap: 6px;
    }
    .supplier-detail-item {
        font-size: .75rem;
        gap: 3px;
    }
    .badge-verified-lg {
        padding: 1px 5px;
        font-size: .59375rem;
        gap: 2px;
        border-radius: 3px;
    }
    .stars-display .star {
        font-size: .8125rem;
    }
    .rating-score,
    .rating-count {
        font-size: .75rem;
    }
    .supplier-action-row {
        width: 100%;
        flex-basis: 100%;
        margin-top: 8px;
    }
    .supplier-action-row .btn {
        width: 100%;
        justify-content: center;
        padding: 8px 0;
        font-size: .8125rem;
    }
    .specs-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .spraydryer-specs { min-width: 500px; }
    .product-info { overflow-x: hidden; }
    .product-detail-grid { grid-template-columns: 1fr; gap: 24px; }
    .product-title { font-size: 1.25rem; }
    .inquiry-cta { flex-direction: column; }
    .inquiry-cta .btn-lg { width: 100%; justify-content: center; }
}

/* ========== 11. 移动端响应式 480px ========== */
@media (max-width: 480px) {
    .product-key-specs { gap: 6px; padding: 8px; }
    .key-spec-item { min-width: 60px; padding: 4px 6px; font-size: .8125rem; }
    .spraydryer-specs .spec-label { width: 40%; padding: 10px; font-size: .8125rem; }
    .spraydryer-specs td { padding: 10px; font-size: .8125rem; }
    .product-title { font-size: 1.125rem; }
    .container { padding: 0 12px; }
}

/* ========== 12. FAQ 常见问题 ========== */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 16px;
}
.faq-item-card {
    background: #fff;
    border: 1px solid var(--border, #e5e7eb);
    border-radius: 12px;
    padding: 20px;
    transition: box-shadow 0.2s;
}
.faq-item-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.faq-question {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border, #e5e7eb);
}
.faq-question h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark, #1f2937);
    margin: 0;
    line-height: 1.5;
}
.faq-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}
.faq-question .faq-icon {
    background: var(--primary-light, #eff6ff);
    color: var(--primary, #2563eb);
}
.faq-answer {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.answer-icon {
    background: #f0fdf4;
    color: #16a34a;
}
.faq-answer-content {
    color: var(--text, #374151);
    font-size: 0.9375rem;
    line-height: 1.7;
}
.faq-answer-content p {
    margin: 0 0 8px 0;
}
.faq-answer-content p:last-child {
    margin-bottom: 0;
}

/* ========== 13. 产品对比悬浮PK按钮 ========== */
.single-product-compare-btn {
    position: fixed;
    right: 30px;
    bottom: 120px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
    z-index: 999;
    transition: all 0.3s;
    flex-direction: column;
    gap: 2px;
}
.single-product-compare-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
}
.single-product-compare-btn .compare-btn-text {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
}

/* ========== 14. 产品对比侧边栏 ========== */
.single-product-compare-sidebar {
    position: fixed;
    right: -400px;
    top: 0;
    width: 380px;
    height: 100vh;
    background: #fff;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transition: right 0.3s ease;
    display: flex;
    flex-direction: column;
}
.single-product-compare-sidebar.active {
    right: 0;
}
.compare-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #e5e7eb;
}
.compare-sidebar-header h3 {
    margin: 0;
    font-size: 18px;
    color: #1f2937;
}
.compare-sidebar-close {
    background: none;
    border: none;
    cursor: pointer;
    color: #6b7280;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s;
}
.compare-sidebar-close:hover {
    background: #f3f4f6;
    color: #1f2937;
}
.compare-sidebar-body {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}
.compare-sidebar-tip {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 20px;
}
.compare-product-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}
.compare-product-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    transition: all 0.2s;
}
.compare-product-item.active {
    border-color: #3b82f6;
    background: #eff6ff;
}
.compare-product-item img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
}
.compare-product-info {
    flex: 1;
    min-width: 0;
}
.compare-product-title {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.compare-product-status {
    font-size: 12px;
    color: #3b82f6;
    font-weight: 500;
}
.compare-sidebar-actions {
    display: flex;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid #e5e7eb;
}
.compare-sidebar-actions .btn {
    flex: 1;
}