/* 响应式设计样式 */

/* 大屏幕设备 (1200px 及以上) */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
    
    .filter-row {
        justify-content: flex-start;
    }
    
    .filter-group {
        min-width: 180px;
    }
}

/* 中等屏幕设备 (992px - 1199px) */
@media (max-width: 1199px) and (min-width: 992px) {
    .container {
        max-width: 960px;
    }
    
    .filter-group {
        min-width: 150px;
    }
}

/* 小屏幕设备 (768px - 991px) */
@media (max-width: 991px) and (min-width: 768px) {
    .container {
        max-width: 720px;
    }
    
    .main-header .container {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .main-nav {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 16px;
        padding-top: 16px;
        border-top: 1px solid #e9ecef;
    }
    
    .filter-row {
        justify-content: center;
    }
    
    .filter-group {
        flex: 1;
        min-width: 120px;
    }
}

/* 移动设备 (767px 及以下) */
@media (max-width: 767px) {
    .container {
        padding: 0 12px;
    }
    
    /* 头部移动端适配 */
    .main-header .container {
        flex-direction: column;
        padding: 12px;
        gap: 12px;
    }
    
    .logo {
        text-align: center;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .main-nav {
        justify-content: center;
        gap: 16px;
    }
    
    .nav-link {
        font-size: 14px;
    }
    
    .user-area {
        flex-direction: column;
        gap: 8px;
    }
    
    #user-info {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    /* 主要内容移动端适配 */
    .main-content {
        padding: 16px 0;
    }
    
    /* 筛选器移动端适配 */
    .filter-section {
        padding: 16px;
        margin-bottom: 16px;
    }
    
    .filter-row {
        flex-direction: column;
        gap: 12px;
    }
    
    .filter-group {
        width: 100%;
        min-width: auto;
    }
    
    .filter-group input,
    .filter-group select {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    /* 底部移动端适配 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 32px 0 24px;
        text-align: center;
    }
    
    .footer-section h4 {
        margin-bottom: 12px;
    }
}

/* 超小屏幕设备 (576px 及以下) */
@media (max-width: 576px) {
    .container {
        padding: 0 8px;
    }
    
    /* 头部超小屏适配 */
    .main-header .container {
        padding: 8px;
    }
    
    .logo h1 {
        font-size: 18px;
    }
    
    .logo span {
        font-size: 12px;
    }
    
    .main-nav {
        gap: 12px;
    }
    
    .nav-link {
        font-size: 12px;
        padding: 4px 8px;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    /* 主要内容超小屏适配 */
    .main-content {
        padding: 12px 0;
    }
    
    /* 筛选器超小屏适配 */
    .filter-section {
        padding: 12px;
        margin-bottom: 12px;
    }
    
    .filter-row {
        gap: 8px;
    }
    
    .filter-group label {
        font-size: 12px;
    }
    
    .filter-group input,
    .filter-group select {
        padding: 8px;
        font-size: 14px;
    }
    
    /* 分页超小屏适配 */
    .pagination {
        padding: 12px 16px;
        flex-direction: column;
        gap: 8px;
    }
    
    #page-info {
        font-size: 12px;
    }
    
    /* 模态框超小屏适配 */
    .modal-content {
        width: 95%;
        margin: 8px;
        max-height: 95vh;
    }
    
    .modal-header {
        padding: 16px;
    }
    
    .modal-header h3 {
        font-size: 16px;
    }
    
    .modal-body {
        padding: 16px;
    }
    
    .modal-actions {
        flex-direction: column;
        gap: 8px;
    }
    
    .modal-actions .btn {
        width: 100%;
    }
    
    /* 表单超小屏适配 */
    .form-container {
        margin: 8px;
        padding: 16px;
    }
    
    .form-container h2 {
        font-size: 18px;
        margin-bottom: 16px;
    }
    
    .form-group {
        margin-bottom: 12px;
    }
    
    .form-group label {
        font-size: 12px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 8px;
        font-size: 14px;
    }
    
    .form-actions {
        flex-direction: column;
        gap: 8px;
        margin-top: 16px;
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    /* 底部超小屏适配 */
    .footer-content {
        padding: 24px 0 16px;
    }
    
    .footer-section {
        padding: 0 8px;
    }
    
    .footer-section h4 {
        font-size: 16px;
    }
    
    .footer-section p,
    .footer-section ul li a {
        font-size: 12px;
    }
}

/* 横屏移动设备 */
@media (max-height: 600px) and (orientation: landscape) {
    .main-header {
        position: relative;
    }
    
    .main-content {
        padding: 8px 0;
    }
    
    .filter-section {
        padding: 8px;
        margin-bottom: 8px;
    }
    
    .modal-content {
        max-height: 80vh;
    }
    
    .form-container {
        margin: 8px auto;
        padding: 16px;
    }
}

/* 打印样式 */
@media print {
    .main-header,
    .filter-section,
    .pagination,
    .main-footer,
    .interaction-buttons,
    .modal-overlay {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .content-table {
        border: 1px solid #000;
    }
    
    .content-table th,
    .content-table td {
        border: 1px solid #000;
        padding: 4px;
    }
    
    .content-title {
        color: #000 !important;
        text-decoration: none !important;
    }
    
    .content-source,
    .content-category {
        background: #f0f0f0 !important;
        color: #000 !important;
    }
}

/* 高对比度支持 */
@media (prefers-contrast: high) {
    .btn {
        border-width: 2px;
    }
    
    .content-table th,
    .content-table td {
        border-width: 2px;
    }
    
    .interaction-btn {
        border-width: 2px;
    }
}

/* 减少动画支持 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #e9ecef;
    }
    
    .main-header {
        background: #2d3748;
        border-bottom-color: #4a5568;
    }
    
    .filter-section,
    .content-table-section,
    .form-container {
        background: #2d3748;
    }
    
    .content-table th {
        background: #4a5568;
        color: #e9ecef;
    }
    
    .content-table tr:hover {
        background: #4a5568;
    }
    
    .content-title {
        color: #63b3ed;
    }
    
    .content-source {
        background: #4a5568;
        color: #cbd5e0;
    }
    
    .modal-content {
        background: #2d3748;
        color: #e9ecef;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select,
    .filter-group input,
    .filter-group select {
        background: #4a5568;
        color: #e9ecef;
        border-color: #718096;
    }
    
    .btn {
        background: #4a5568;
        color: #e9ecef;
        border-color: #718096;
    }
    
    .btn-primary {
        background: #4299e1;
        border-color: #4299e1;
    }
    
    .btn-secondary {
        background: #718096;
        border-color: #718096;
    }
}