/* 响应式样式 - 断点系统 */

/* 桌面端 (>1440px) - 大屏优化 */
@media (min-width: 1440px) {
  .app-container {
    grid-template-columns: 280px 1fr;
  }
  
  .sidebar {
    width: 280px;
  }
  
  .search-input {
    width: 400px;
  }
  
  .data-cards {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  }
}

/* 桌面端 (1025px-1440px) - 标准布局 */
@media (min-width: 1025px) and (max-width: 1439px) {
  .app-container {
    grid-template-columns: 260px 1fr;
  }
}

/* 平板端 (768px-1024px) - 缩小侧边栏 */
@media (min-width: 768px) and (max-width: 1024px) {
  .app-container {
    grid-template-columns: 240px 1fr;
  }
  
  .sidebar {
    width: 240px;
  }
  
  .sidebar-header {
    padding: 12px 16px;
  }
  
  .sidebar-search,
  .sidebar-nav,
  .sidebar-footer {
    padding-left: 16px;
    padding-right: 16px;
  }
  
  .search-input {
    width: 250px;
  }
  
  .data-cards {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
  
  .content-main {
    padding: 20px;
  }
}

/* 移动端 (<768px) - 侧边栏隐藏 */
@media (max-width: 767px) {
  .app-container {
    grid-template-columns: 1fr;
  }
  
  /* 侧边栏移动端样式 */
  .sidebar {
    position: fixed;
    top: 0;
    left: -260px;
    height: 100vh;
    width: 260px;
    z-index: 1000;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.15);
  }
  
  .sidebar.open {
    left: 0;
  }
  
  .sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    display: block;
  }
  
  .sidebar.open + .sidebar-backdrop {
    opacity: 1;
    visibility: visible;
  }
  
  /* 移动端菜单按钮 */
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* 移动端头部布局 */
  .header-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 12px 16px;
  }
  
  .breadcrumb {
    order: -1;
    text-align: center;
  }
  
  .header-tools {
    justify-content: center;
    flex-wrap: wrap;
  }
  
  /* 搜索框响应式 */
  .search-input {
    width: 100%;
    min-width: 200px;
  }
  
  .search-container {
    width: 100%;
    justify-content: center;
  }
  
  .search-box {
    flex: 1;
    max-width: 300px;
  }
  
  /* 分页信息响应式 */
  .pagination-info {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 12px 16px;
    text-align: center;
  }
  
  .per-page-select {
    width: 100%;
    max-width: 200px;
  }
  
  /* 内容区域响应式 */
  .content-main {
    padding: 16px;
  }
  
  /* 数据卡片响应式 */
  .data-cards {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 12px;
  }
  
  .data-card {
    padding: 12px;
  }
  
  /* 数据表格响应式 */
  .data-table {
    font-size: 13px;
  }
  
  .data-table th,
  .data-table td {
    padding: 8px 12px;
  }
  
  /* 隐藏非关键列 */
  @media (max-width: 480px) {
    .data-table th:nth-child(n+4),
    .data-table td:nth-child(n+4) {
      display: none;
    }
    
    .data-table th:last-child,
    .data-table td:last-child {
      display: table-cell;
    }
  }
}

/* 小屏手机 (<480px) - 极简模式 */
@media (max-width: 479px) {
  .header-toolbar {
    padding: 8px 12px;
    gap: 8px;
  }
  
  .header-tools {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  
  .view-controls,
  .export-dropdown {
    width: 100%;
  }
  
  .view-controls {
    justify-content: center;
  }
  
  .export-button {
    width: 100%;
    justify-content: center;
  }
  
  .search-container {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-button {
    width: 100%;
    justify-content: center;
  }
  
  .content-main {
    padding: 12px;
  }
  
  .data-cards {
    gap: 8px;
    padding: 8px;
  }
  
  .data-card {
    padding: 8px;
  }
  
  .pagination-info {
    padding: 8px 12px;
  }
  
  /* 单列布局 */
  .data-cards {
    grid-template-columns: 1fr;
  }
}

/* 横向模式 */
@media (max-height: 600px) and (orientation: landscape) {
  .sidebar {
    max-height: 100vh;
  }
  
  .sidebar-header {
    padding: 8px 16px;
  }
  
  .sidebar-nav {
    padding: 4px 0;
  }
  
  .nav-link {
    padding: 6px 12px;
  }
  
  .nav-title {
    font-size: 13px;
  }
  
  .nav-description {
    font-size: 11px;
  }
  
  .content-main {
    padding: 12px 16px;
  }
}

/* 触控设备优化 */
@media (hover: none) and (pointer: coarse) {
  .nav-link:hover,
  .view-button:hover,
  .export-button:hover,
  .settings-button:hover {
    background: none;
  }
  
  .nav-link:active,
  .view-button:active,
  .export-button:active,
  .settings-button:active {
    background: var(--bg-tertiary);
    transform: scale(0.98);
  }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .sidebar {
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.08);
  }
  
  .export-menu {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  }
}

/* 暗色主题响应式 */
@media (max-width: 768px) and (prefers-color-scheme: dark) {
  .sidebar {
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
  }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
  .sidebar,
  .sidebar-backdrop,
  .export-menu {
    transition: none;
  }
}

/* 强制横向滚动 */
@media (max-width: 768px) {
  .data-table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .data-table {
    min-width: 600px;
  }
}

/* 打印响应式 */
@media print {
  .sidebar,
  .mobile-menu-toggle,
  .header-tools,
  .pagination-info {
    display: none !important;
  }
  
  .app-container {
    grid-template-columns: 1fr;
  }
  
  .main-content {
    overflow: visible;
    height: auto;
  }
  
  .content-header {
    position: static;
    border: none;
    padding: 0;
  }
  
  .data-table th,
  .data-table td {
    border: 1px solid var(--border-dark);
  }
}

/* 键盘导航响应式 */
@media (max-width: 768px) {
  .sidebar:focus-within {
    left: 0;
  }
  
  .sidebar-backdrop:focus-within {
    opacity: 1;
    visibility: visible;
  }
}

/* 系统主题检测 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-tertiary: #cbd5e1;
    --border-light: #334155;
    --border-medium: #475569;
    --border-dark: #64748b;
  }
}

/* 高对比度模式响应式 */
@media (prefers-contrast: high) {
  .sidebar {
    border-right: 2px solid var(--border-dark);
  }
  
  .nav-link.active {
    border: 2px solid var(--accent-600);
  }
  
  .search-input:focus {
    border-width: 2px;
  }
}

/* 自定义滚动条响应式 */
@media (max-width: 768px) {
  .sidebar::-webkit-scrollbar {
    width: 8px;
  }
  
  .sidebar::-webkit-scrollbar-thumb {
    background: var(--border-dark);
    border-radius: 4px;
  }
}