/* 响应式设计 */

/* 大屏幕 (1200px+) */
@media (min-width: 1200px) {
    .link-cards-container {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .header-container {
        max-width: 1400px;
    }
    
    .main-container {
        max-width: 1400px;
    }
    
    .footer-container {
        max-width: 1400px;
    }
}

/* 中等屏幕 (992px - 1199px) */
@media (max-width: 1199px) {
    .link-cards-container {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .header-container {
        padding: 15px 15px;
    }
    
    .main-container {
        padding: 0 15px;
    }
}

/* 小屏幕 (768px - 991px) */
@media (max-width: 991px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .logo-section {
        order: 1;
    }
    
    .search-section {
        order: 2;
        max-width: 100%;
    }
    
    .admin-section {
        order: 3;
        min-width: auto;
    }
    
    .main-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .sidebar {
        width: 100%;
        position: static;
        order: 2;
    }
    
    .content-area {
        order: 1;
    }
    
    .link-cards-container {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        gap: 20px;
    }
}

/* 移动设备 (576px - 767px) */
@media (max-width: 767px) {
    .site-logo {
        width: 150px;
        height: 45px;
    }
    
    .site-logo-text {
        width: 150px;
        height: 45px;
        font-size: 18px;
    }
    
    .search-container {
        flex-direction: column;
        gap: 8px;
    }
    
    .search-engine-select {
        padding: 10px 12px;
        font-size: 13px;
        min-width: 100px;
        border-radius: 20px;
    }
    
    .search-form {
        border-radius: 20px;
        max-width: 100%;
    }
    
    .search-input {
        padding: 10px 15px;
        font-size: 14px;
    }
    
    .search-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .admin-section {
        width: 100%;
    }
    
    .admin-info {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .sidebar {
        border-radius: 6px;
    }
    
    .sidebar-header {
        padding: 15px;
    }
    
    .category-link {
        padding: 10px 15px;
    }
    
    .sidebar-actions {
        padding: 10px 15px;
    }
    
    .slideshow-section {
        height: 150px;
        border-radius: 6px;
    }
    
    .slide-content {
        bottom: 10px;
        left: 10px;
        right: 10px;
        padding: 10px;
    }
    
    .slide-title {
        font-size: 16px;
    }
    
    .slide-description {
        font-size: 12px;
    }
    
    .slide-link {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .slide-nav {
        width: 35px;
        height: 35px;
        font-size: 16px;
    }
    
    .slide-nav.prev {
        left: 10px;
    }
    
    .slide-nav.next {
        right: 10px;
    }
    
    .recommended-section, .main-links-section {
        padding: 15px;
        border-radius: 6px;
    }
    
    .section-title {
        font-size: 18px;
    }
    
    .category-title {
        font-size: 16px;
    }
    
    .link-cards-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .link-card {
        height: 70px;
    }
    
    .card-link {
        padding: 10px;
        gap: 8px;
    }
    
    .card-icon {
        width: 35px;
        height: 35px;
    }
    
    .default-icon {
        font-size: 16px;
    }
    
    .card-title {
        font-size: 13px;
    }
    
    .card-description {
        font-size: 11px;
    }
    
    .visit-count {
        font-size: 10px;
    }
    
    .recommended-badge {
        font-size: 9px;
        padding: 1px 4px;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .footer-item {
        font-size: 12px;
    }
    
    .footer-links {
        margin-top: 10px;
    }
    
    .footer-link {
        display: block;
        margin: 5px 0;
    }
}

/* 超小屏幕 (最大575px) */
@media (max-width: 575px) {
    .header-container {
        padding: 10px;
    }
    
    .site-logo {
        width: 120px;
        height: 36px;
    }
    
    .site-logo-text {
        width: 120px;
        height: 36px;
        font-size: 16px;
    }
    
    .search-engine-select {
        padding: 8px 10px;
        font-size: 12px;
        min-width: 90px;
        border-radius: 15px;
    }
    
    .search-input {
        padding: 8px 12px;
        font-size: 13px;
    }
    
    .search-btn {
        padding: 8px 15px;
        font-size: 13px;
    }
    
    .main-container {
        padding: 0 10px;
        gap: 10px;
    }
    
    .slideshow-section {
        height: 120px;
    }
    
    .placeholder-slide h3 {
        font-size: 18px;
    }
    
    .placeholder-slide p {
        font-size: 14px;
    }
    
    .recommended-section, .main-links-section {
        padding: 10px;
    }
    
    .section-title {
        font-size: 16px;
    }
    
    .category-title {
        font-size: 15px;
    }
    
    .link-cards-container {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .link-card {
        height: 65px;
        max-width: 100%;
    }
    
    .card-link {
        padding: 8px;
        gap: 6px;
    }
    
    .card-icon {
        width: 30px;
        height: 30px;
    }
    
    .default-icon {
        font-size: 14px;
    }
    
    .card-title {
        font-size: 12px;
    }
    
    .card-description {
        font-size: 10px;
        -webkit-line-clamp: 1;
    }
    
    .card-meta {
        gap: 2px;
    }
    
    .visit-count {
        font-size: 9px;
    }
    
    .recommended-badge {
        font-size: 8px;
        padding: 1px 3px;
    }
    
    .site-footer {
        padding: 15px 0;
    }
    
    .footer-container {
        padding: 0 10px;
    }
    
    .footer-content {
        gap: 8px;
    }
    
    .footer-item {
        font-size: 11px;
    }
}

/* 动态调整卡片宽度 */
@media (min-width: 576px) {
    .link-card {
        min-width: 200px;
        max-width: 220px;
    }
}

@media (max-width: 575px) {
    .link-card {
        min-width: 100%;
        max-width: 100%;
    }
}

/* 横屏手机优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .slideshow-section {
        height: 100px;
    }
    
    .slide-content {
        bottom: 5px;
        left: 5px;
        right: 5px;
        padding: 5px;
    }
    
    .slide-title {
        font-size: 14px;
        margin-bottom: 2px;
    }
    
    .slide-description {
        font-size: 11px;
        margin-bottom: 5px;
    }
    
    .slide-link {
        padding: 4px 8px;
        font-size: 11px;
    }
}

/* 打印样式 */
@media print {
    .site-header,
    .sidebar,
    .slideshow-section,
    .site-footer {
        display: none;
    }
    
    .main-container {
        max-width: 100%;
        margin: 0;
        padding: 0;
    }
    
    .content-area {
        gap: 10px;
    }
    
    .recommended-section,
    .main-links-section {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
    
    .link-card {
        border: 1px solid #ddd;
        box-shadow: none;
    }
    
    .link-card:hover {
        transform: none;
        box-shadow: none;
    }
    
    .card-link {
        color: #000 !important;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .link-card {
        border-width: 2px;
    }
    
    .search-engine.active {
        border: 2px solid #000;
    }
    
    .btn-primary {
        border: 2px solid #000;
    }
}

/* 减少动画模式支持 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .slide {
        transition: none;
    }
    
    .link-card:hover {
        transform: none;
    }
}