/* 现代化产品详情页面专用样式 */
/* 基于现代化设计规范优化 */

/* ========== 产品图片区域 ========== */
.product-detail-modern .product-gallery {
    position: relative;
    margin-bottom: 2rem;
}

.product-detail-modern .main-image-container {
    position: relative;
    background: var(--bg-secondary-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.product-detail-modern .main-image-container:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transform: translateY(-5px);
}

.product-detail-modern .main-product-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    border-radius: var(--border-radius);
}

.product-detail-modern .main-image-container:hover .main-product-image {
    transform: scale(1.03);
    filter: brightness(1.05) contrast(1.05);
}

.product-detail-modern .image-zoom-trigger {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    font-size: 1.2rem;
    transform: scale(0.8);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    z-index: 10;
}

.product-detail-modern .main-image-container:hover .image-zoom-trigger {
    opacity: 1;
    transform: scale(1.1);
    background: rgba(0, 0, 0, 0.8);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.product-detail-modern .main-image-container .image-zoom-trigger:hover {
    transform: scale(1.2);
    background: var(--primary-color);
}

/* 产品标签 */
.product-detail-modern .product-badge-modern {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.product-detail-modern .product-badge-modern:hover {
    transform: scale(1.05);
}

.product-detail-modern .featured-badge-modern {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: white;
}

.product-detail-modern .discount-badge-modern {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    top: 60px;
}

.product-detail-modern .new-badge-modern {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
    top: 60px;
    left: 15px;
}

/* 图片缩略图 */
.product-detail-modern .image-thumbnails-modern {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    overflow-x: auto;
    padding: 0.5rem 0;
}

.product-detail-modern .thumbnail-wrapper-modern {
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    background: var(--bg-secondary-color);
    min-width: 80px;
    height: 80px;
    flex-shrink: 0;
}

.product-detail-modern .thumbnail-wrapper-modern.active {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb), 0.25), 0 5px 15px rgba(var(--primary-color-rgb), 0.3);
    transform: translateY(-3px);
}

.product-detail-modern .thumbnail-wrapper-modern:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(var(--primary-color-rgb), 0.4);
    z-index: 10;
}

.product-detail-modern .thumbnail-wrapper-modern:hover .thumbnail-image-modern {
    filter: brightness(1.1) contrast(1.1);
}

.product-detail-modern .thumbnail-image-modern {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.3s ease;
    border-radius: calc(var(--border-radius) - 2px);
}

/* ========== 产品信息区域 ========== */
.product-detail-modern .product-info-modern {
    padding: 0 15px;
}

.product-detail-modern .product-header-modern {
    margin-bottom: 1.5rem;
}

.product-detail-modern .product-title-modern {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.product-detail-modern .product-title-modern:hover {
    color: var(--primary-color);
}

.product-detail-modern .product-sku-modern {
    margin-bottom: 1rem;
    color: var(--text-secondary-color);
    font-size: 0.9rem;
}

/* 价格区域 */
.product-detail-modern .product-pricing-modern {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg-secondary-color), var(--bg-tertiary-color));
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--primary-color);
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.product-detail-modern .product-pricing-modern:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.product-detail-modern .price-container-modern {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.product-detail-modern .current-price-modern {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    background: linear-gradient(45deg, var(--primary-color), var(--primary-hover-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-detail-modern .compare-price-modern {
    font-size: 1.25rem;
    color: var(--text-secondary-color);
    text-decoration: line-through;
}

.product-detail-modern .savings-modern {
    background: var(--success-color);
    color: white;
    padding: 4px 8px;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
}

/* 产品规格 */
.product-detail-modern .product-specs-modern {
    margin-bottom: 2rem;
}

.product-detail-modern .product-specs-modern h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.product-detail-modern .specs-grid-modern {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.product-detail-modern .spec-item-modern {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-secondary-color);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary-color);
    transition: all 0.3s ease;
}

.product-detail-modern .spec-item-modern:hover {
    background: var(--bg-color);
    transform: translateX(5px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.product-detail-modern .spec-label-modern {
    font-weight: 600;
    color: var(--text-color);
}

.product-detail-modern .spec-value-modern {
    color: var(--text-secondary-color);
    font-weight: 500;
}

/* ========== 购买区域 ========== */
.product-detail-modern .purchase-section-modern {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-top: 1.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.product-detail-modern .purchase-section-modern:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.1);
    transform: translateY(-3px);
}

/* 数量控制器增强 */
.product-detail-modern .quantity-selector-modern {
    margin-bottom: 1.5rem;
}

.product-detail-modern .quantity-controls-modern {
    display: flex;
    align-items: center;
    gap: 0;
    max-width: 180px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    background: var(--card-bg);
}

.product-detail-modern .quantity-controls-modern:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.1);
}

.product-detail-modern .quantity-btn-modern {
    width: 45px;
    height: 45px;
    border: none;
    background: var(--bg-secondary-color);
    color: var(--text-color);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.product-detail-modern .quantity-btn-modern:hover {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

.product-detail-modern .quantity-btn-modern:active {
    transform: scale(0.95);
}

.product-detail-modern .quantity-input-modern {
    width: 90px;
    height: 45px;
    border: none;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    background: var(--card-bg);
    transition: all 0.2s ease;
    -moz-appearance: textfield; /* Firefox */
    color: var(--text-color);
}

.product-detail-modern .quantity-input-modern::-webkit-outer-spin-button,
.product-detail-modern .quantity-input-modern::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.product-detail-modern .quantity-input-modern:focus {
    outline: none;
    background-color: var(--bg-secondary-color);
}

.product-detail-modern .quantity-input-modern.is-valid {
    border-color: var(--success-color);
    background-color: rgba(40, 167, 69, 0.05);
}

.product-detail-modern .quantity-input-modern.is-invalid {
    border-color: var(--danger-color);
    background-color: rgba(220, 53, 69, 0.05);
    animation: shake 0.3s ease-in-out;
}

.product-detail-modern .quantity-info-modern {
    font-size: 0.875rem;
    color: var(--text-secondary-color);
    margin-top: 0.5rem;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}

@keyframes quantityBounce {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.product-detail-modern .quantity-changed-modern {
    animation: quantityBounce 0.3s ease;
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb), 0.25) !important;
}

/* 购买按钮增强 */
.product-detail-modern .purchase-buttons-modern {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.product-detail-modern .btn-modern {
    flex: 1;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 50px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    border: none;
    cursor: pointer;
    text-decoration: none;
    color: white;
    font-size: 1rem;
}

.product-detail-modern .btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.product-detail-modern .add-to-cart-btn-modern {
    background: linear-gradient(135deg, var(--success-color), #218838);
    color: white;
}

.product-detail-modern .add-to-cart-btn-modern:hover {
    box-shadow: 0 8px 20px rgba(40, 167, 69, 0.3);
    background: linear-gradient(135deg, #218838, #1e7e34);
}

.product-detail-modern .buy-now-btn-modern {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover-color));
    color: white;
}

.product-detail-modern .buy-now-btn-modern:hover {
    background: linear-gradient(135deg, var(--primary-hover-color), #0056b3);
}

.product-detail-modern .inquiry-btn-modern {
    background: linear-gradient(135deg, var(--info-color), #138496);
    color: white;
}

.product-detail-modern .inquiry-btn-modern:hover {
    background: linear-gradient(135deg, #138496, #10707f);
}

.product-detail-modern .btn-modern:active {
    transform: translateY(0);
}

.product-detail-modern .btn-loading-modern {
    pointer-events: none;
}

.product-detail-modern .btn-loading-modern::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    border-radius: inherit;
}

/* 缺货通知区域 */
.product-detail-modern .out-of-stock-notice-modern {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, #fff3cd, #fffbf0);
    border-radius: var(--border-radius-lg);
    border: 2px solid #ffc107;
    color: #856404;
}

.product-detail-modern .out-of-stock-actions-modern {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.product-detail-modern .notify-btn-modern,
.product-detail-modern .contact-btn-modern {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover-color));
    border: none;
    color: white;
    transition: all 0.3s ease;
    min-width: 200px;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(0, 123, 255, 0.3);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.product-detail-modern .notify-btn-modern:hover,
.product-detail-modern .contact-btn-modern:hover {
    background: linear-gradient(135deg, var(--primary-hover-color), #0056b3);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 123, 255, 0.4);
}

/* 服务保障样式 */
.product-detail-modern .service-guarantees-modern {
    background: linear-gradient(135deg, var(--bg-secondary-color), var(--bg-tertiary-color));
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    border-left: 4px solid var(--success-color);
    margin-top: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.product-detail-modern .service-guarantees-modern h3 {
    margin-top: 0;
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 600;
}

.product-detail-modern .guarantees-grid-modern {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.product-detail-modern .guarantee-item-modern {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.product-detail-modern .guarantee-item-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.product-detail-modern .guarantee-icon-modern {
    font-size: 1.2rem;
    color: var(--primary-color);
}

.product-detail-modern .guarantee-text-modern {
    font-weight: 500;
    color: var(--text-color);
}

/* 页面反馈动画 */
.product-detail-modern .cart-updated-modern {
    animation: cartUpdatePulse 1s ease-out;
}

@keyframes cartUpdatePulse {
    0% { background-color: rgba(40, 167, 69, 0.1); }
    50% { background-color: rgba(40, 167, 69, 0.05); }
    100% { background-color: transparent; }
}

/* 通知样式增强 */
.product-detail-modern .notification-popup-modern {
    animation: slideInRight 0.3s ease;
    border-left: 4px solid;
    z-index: 9999;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 400px;
}

.product-detail-modern .alert-success-modern {
    border-left-color: var(--success-color);
    background: linear-gradient(135deg, #d4edda, #f0f8f0);
    color: #155724;
}

.product-detail-modern .alert-danger-modern {
    border-left-color: var(--danger-color);
    background: linear-gradient(135deg, #f8d7da, #fdf2f2);
    color: #721c24;
}

.product-detail-modern .alert-warning-modern {
    border-left-color: var(--warning-color);
    background: linear-gradient(135deg, #fff3cd, #fffbf0);
    color: #856404;
}

.product-detail-modern .alert-info-modern {
    border-left-color: var(--info-color);
    background: linear-gradient(135deg, #d1ecf1, #f0f9fa);
    color: #0c5460;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.product-detail-modern .slide-out-right-modern {
    animation: slideOutRight 0.3s ease forwards;
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ========== 详情标签页 ========== */
.product-detail-modern .product-details-tabs-modern {
    margin-top: 3rem;
}

.product-detail-modern .nav-tabs-modern {
    border-bottom: 2px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    background: var(--card-bg);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
    padding: 0;
    margin: 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    border-bottom: none;
}

.product-detail-modern .nav-tabs-modern .nav-link {
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary-color);
    font-weight: 600;
    padding: 1rem 1.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
    background: transparent;
    position: relative;
    margin-bottom: -2px;
}

.product-detail-modern .nav-tabs-modern .nav-link:hover {
    border-color: transparent;
    color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.05);
}

.product-detail-modern .nav-tabs-modern .nav-link.active {
    color: var(--primary-color);
    background: transparent;
    border-bottom-color: var(--primary-color);
}

.product-detail-modern .tab-content-wrapper-modern {
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
    min-height: 300px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    border-top: none;
}

/* 产品描述 */
.product-detail-modern .product-description-modern {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.product-detail-modern .product-description-modern p {
    margin-bottom: 1rem;
}

.product-detail-modern .product-description-modern h4 {
    color: var(--text-color);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* 规格表格 */
.product-detail-modern .specifications-table-modern .table {
    margin-bottom: 0;
    width: 100%;
    border-collapse: collapse;
}

.product-detail-modern .specifications-table-modern .table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.product-detail-modern .specifications-table-modern .table td:first-child {
    background: var(--bg-secondary-color);
    font-weight: 600;
    width: 30%;
}

.product-detail-modern .specifications-table-modern .table tr:last-child td {
    border-bottom: none;
}

/* 配送信息 */
.product-detail-modern .shipping-option-modern {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
    background: var(--card-bg);
}

.product-detail-modern .shipping-option-modern:hover {
    border-color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.02);
    transform: translateX(5px);
}

.product-detail-modern .shipping-price-modern {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.product-detail-modern .shipping-notes-modern {
    list-style: none;
    padding: 0;
    margin-top: 0.5rem;
}

.product-detail-modern .shipping-notes-modern li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    padding-left: 1.5rem;
    color: var(--text-color);
}

.product-detail-modern .shipping-notes-modern li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: 600;
}

.product-detail-modern .shipping-notes-modern li:last-child {
    border-bottom: none;
}

/* 评价区域 */
.product-detail-modern .reviews-summary-modern {
    background: var(--bg-secondary-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.product-detail-modern .average-rating-modern {
    font-size: 3rem;
    font-weight: 700;
    color: #ffc107;
    line-height: 1;
}

.product-detail-modern .rating-stars-modern {
    font-size: 1.5rem;
    margin: 0.5rem 0;
    color: #ffc107;
}

.product-detail-modern .rating-breakdown-modern {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.product-detail-modern .rating-bar-modern {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
}

.product-detail-modern .rating-bar-modern span:first-child {
    min-width: 30px;
    color: var(--text-color);
}

.product-detail-modern .rating-bar-modern span:last-child {
    min-width: 35px;
    text-align: right;
    color: var(--text-color);
}

.product-detail-modern .rating-bar-modern .progress-modern {
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.product-detail-modern .rating-bar-modern .progress-bar-modern {
    background: #ffc107;
    height: 100%;
    border-radius: 4px;
}

.product-detail-modern .review-item-modern {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
}

.product-detail-modern .review-item-modern:last-child {
    border-bottom: none;
}

.product-detail-modern .review-header-modern {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.product-detail-modern .reviewer-info-modern strong {
    margin-right: 1rem;
    color: var(--text-color);
}

.product-detail-modern .review-date-modern {
    color: var(--text-secondary-color);
    font-size: 0.875rem;
}

.product-detail-modern .review-rating-modern {
    color: #ffc107;
    font-size: 1.1rem;
}

.product-detail-modern .review-content-modern {
    color: var(--text-color);
    line-height: 1.6;
}

/* ========== 相关产品 ========== */
.product-detail-modern .related-products-modern {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.product-detail-modern .section-title-modern {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.product-detail-modern .section-title-modern:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover-color));
    border-radius: 2px;
}

.product-detail-modern .related-products-grid-modern {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* ========== 响应式设计 ========== */
@media (max-width: 992px) {
    .product-detail-modern .related-products-grid-modern {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 1.2rem;
    }
    
    .product-detail-modern .product-title-modern {
        font-size: 1.8rem;
    }
    
    .product-detail-modern .current-price-modern {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .product-detail-modern .product-title-modern {
        font-size: 1.5rem;
    }
    
    .product-detail-modern .current-price-modern {
        font-size: 2rem;
    }
    
    .product-detail-modern .purchase-buttons-modern {
        flex-direction: column;
    }
    
    .product-detail-modern .btn-modern {
        min-width: 100%;
    }
    
    .product-detail-modern .guarantees-grid-modern {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-detail-modern .price-container-modern {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .product-detail-modern .quantity-controls-modern {
        max-width: 150px;
    }
    
    .product-detail-modern .quantity-btn-modern {
        width: 40px;
        height: 40px;
    }
    
    .product-detail-modern .quantity-input-modern {
        width: 70px;
        height: 40px;
    }
    
    .product-detail-modern .out-of-stock-actions-modern {
        flex-direction: column;
        align-items: center;
    }
    
    .product-detail-modern .out-of-stock-actions-modern .btn-modern {
        width: 100%;
        max-width: 300px;
    }
    
    .product-detail-modern .tab-content-wrapper-modern {
        padding: 1.5rem;
    }
    
    .product-detail-modern .nav-tabs-modern .nav-link {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        flex: 1;
        text-align: center;
    }
    
    .product-detail-modern .related-products-grid-modern {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 1rem;
    }
    
    .product-detail-modern .image-thumbnails-modern {
        gap: 0.5rem;
    }
    
    .product-detail-modern .thumbnail-wrapper-modern {
        min-width: 60px;
        height: 60px;
    }
}

@media (max-width: 576px) {
    .product-detail-modern .product-info-modern {
        padding: 0;
    }
    
    .product-detail-modern .tab-content-wrapper-modern {
        padding: 1rem;
    }
    
    .product-detail-modern .nav-tabs-modern .nav-link {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
    
    .product-detail-modern .guarantees-grid-modern {
        grid-template-columns: 1fr;
    }
    
    .product-detail-modern .rating-bar-modern {
        font-size: 0.75rem;
    }
    
    .product-detail-modern .average-rating-modern {
        font-size: 2.5rem;
    }
    
    .product-detail-modern .purchase-buttons-modern {
        gap: 0.75rem;
    }
    
    .product-detail-modern .quantity-controls-modern {
        max-width: 130px;
    }
    
    .product-detail-modern .quantity-btn-modern {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .product-detail-modern .quantity-input-modern {
        width: 60px;
        height: 35px;
        font-size: 1rem;
    }
    
    .product-detail-modern .section-title-modern {
        font-size: 1.5rem;
    }
    
    .product-detail-modern .related-products-grid-modern {
        grid-template-columns: 1fr;
    }
    
    .product-detail-modern .product-pricing-modern {
        padding: 1rem;
    }
    
    .product-detail-modern .current-price-modern {
        font-size: 1.8rem;
    }
    
    .product-detail-modern .compare-price-modern {
        font-size: 1rem;
    }
}