/* 响应式设计 */

/* 大屏幕 (1200px+) */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 中等屏幕 (768px - 1199px) */
@media (max-width: 1199px) {
    .hero-text h1 {
        font-size: 32px;
    }
    
    .search-area {
        max-width: 400px;
        margin: 0 20px;
    }
    
    .nav-link {
        padding: 15px 15px;
    }
}

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .header-content {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .search-area {
        order: 3;
        flex-basis: 100%;
        max-width: none;
        margin: 15px 0 0 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-features {
        justify-content: center;
        align-items: center;
    }
    
    .nav-menu {
        flex-wrap: wrap;
    }
    
    .nav-link {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
}

/* 小屏设备 (480px - 767px) */
@media (max-width: 767px) {
    .container {
        padding: 0 15px;
    }
    
    .top-bar {
        display: none;
    }
    
    .main-header {
        padding: 10px 0;
    }
    
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .logo {
        justify-content: center;
        margin-bottom: 15px;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .search-area {
        order: 2;
        margin: 0;
    }
    
    .user-actions {
        order: 3;
        justify-content: center;
        margin-top: 15px;
    }
    
    .nav-menu {
        flex-direction: column;
    }
    
    .nav-link {
        padding: 12px 20px;
        text-align: center;
        border-bottom: 1px solid #2c3e50;
    }
    
    .nav-item:last-child .nav-link {
        border-bottom: none;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    .hero-text h1 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .hero-text p {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .hero-features {
        align-items: flex-start;
    }
    
    .feature {
        font-size: 14px;
    }
    
    .hero-image {
        order: -1;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }
    
    .categories-section,
    .featured-products,
    .latest-products {
        padding: 40px 0;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .product-card {
        border-radius: 6px;
    }
    
    .product-image {
        height: 150px;
    }
    
    .product-info {
        padding: 12px;
    }
    
    .product-title {
        font-size: 14px;
        height: 36px;
    }
    
    .product-manufacturer {
        font-size: 12px;
        margin-bottom: 8px;
    }
    
    .price {
        font-size: 16px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 20px;
        text-align: center;
    }
    
    .footer-section ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .footer-section ul li {
        margin-bottom: 5px;
    }
}

/* 超小屏设备 (小于480px) */
@media (max-width: 479px) {
    .container {
        padding: 0 10px;
    }
    
    .logo-text {
        font-size: 18px;
    }
    
    .search-input {
        padding: 10px 12px;
        font-size: 14px;
    }
    
    .search-btn {
        padding: 10px 15px;
        font-size: 13px;
    }
    
    .hero {
        padding: 30px 0;
    }
    
    .hero-text h1 {
        font-size: 20px;
    }
    
    .hero-text p {
        font-size: 14px;
    }
    
    .feature {
        font-size: 13px;
    }
    
    .feature-icon {
        width: 20px;
        height: 20px;
        font-size: 12px;
        margin-right: 10px;
    }
    
    .section-title {
        font-size: 20px;
        margin-bottom: 25px;
    }
    
    .categories-section,
    .featured-products,
    .latest-products {
        padding: 30px 0;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .product-image {
        height: 180px;
    }
    
    .product-title {
        font-size: 15px;
        height: auto;
        -webkit-line-clamp: 3;
    }
    
    .category-info {
        padding: 15px;
    }
    
    .category-info h3 {
        font-size: 18px;
    }
    
    .footer {
        padding: 30px 0 15px;
    }
    
    .footer-section h4 {
        font-size: 16px;
        margin-bottom: 10px;
    }
}

/* 横屏模式适配 */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 20px 0;
    }
    
    .hero-text h1 {
        font-size: 24px;
        margin-bottom: 10px;
    }
    
    .hero-text p {
        margin-bottom: 15px;
    }
    
    .hero-features {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .categories-section,
    .featured-products,
    .latest-products {
        padding: 30px 0;
    }
}

/* 高分辨率屏幕适配 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
    
    .product-image img,
    .category-image img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .hero,
    .nav-menu {
        display: none;
    }
    
    .container {
        max-width: none;
        margin: 0;
        padding: 0;
    }
    
    .product-card,
    .category-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .section-title {
        color: #000;
        page-break-after: avoid;
    }
    
    .products-grid,
    .categories-grid {
        display: block;
    }
    
    .product-card,
    .category-card {
        display: inline-block;
        width: 48%;
        margin: 1%;
        vertical-align: top;
    }
}

/* 可访问性增强 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    /* 可以在这里添加深色主题样式 */
    /* 暂时保留原色彩方案 */
}

/* Navigation Responsive */
@media (max-width: 1200px) {
    .nav-menu {
        justify-content: flex-start; /* 宽度不够时左对齐 */
        overflow-x: auto; /* 允许水平滚动 */
    }
    
    .nav-link {
        padding: 15px 15px; /* 减小间距 */
        font-size: 14px; /* 缩小字体 */
    }
}

@media (max-width: 768px) {
    .main-nav {
        padding: 0 10px;
    }
    
    .nav-menu {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch; /* iOS 平滑滚动 */
    }
    
    .nav-link {
        padding: 12px 12px;
        font-size: 13px;
    }
}

/* Product Detail Responsive */
@media (max-width: 768px) {
    .product-detail-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .product-info-main {
        padding: 15px;
    }
    
    .product-title {
        font-size: 22px;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .product-actions .btn {
        width: 100%;
    }
    
    .thumbnail-images {
        justify-content: center;
    }
    
    .tabs-navigation {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        flex: 1;
        text-align: center;
        min-width: 120px;
        margin-bottom: 5px;
    }
    
    .breadcrumb-list li {
        font-size: 12px;
    }
    
    .current-price {
        font-size: 24px;
    }
    
    .price-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}

/* 移动端响应式样式 */
@media (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .search-area {
        max-width: none;
        margin: 0;
        width: 100%;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-text h1 {
        font-size: 24px;
    }
    
    .search-input {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    .top-bar-content {
        flex-direction: column;
        gap: 5px;
        text-align: center;
    }
    
    .contact-info span {
        margin-right: 10px;
        display: block;
        margin-bottom: 5px;
    }
}