/* 响应式适配样式 - 根据分辨率精确控制 */

/* 基础响应式设置 */
:root {
  --mobile-breakpoint: 768px;
  --tablet-breakpoint: 1024px;
  --desktop-breakpoint: 1200px;
}

/* 桌面端优先 - 大屏幕保持原有布局 */
@media (min-width: 769px) {
  /* 确保PC端布局不被移动端样式影响 */
  .mobile-menu-btn {
    display: none !important;
  }
  
  .nav-menu {
    position: static !important;
    left: auto !important;
    width: auto !important;
    height: auto !important;
    background: none !important;
    flex-direction: row !important;
    box-shadow: none !important;
    padding: 0 !important;
  }
  
  .nav-search {
    display: flex !important;
  }
  
  .nav-user {
    margin-top: 0 !important;
    margin-right: 0 !important;
    justify-content: flex-end !important;
  }
  
  .hero-buttons {
    flex-direction: row !important;
    width: auto !important;
    max-width: none !important;
  }
  
  .video-grid,
  .tea-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)) !important;
    gap: 2rem !important;
  }
  
  .stats-grid {
    grid-template-columns: repeat(4, 1fr) !important;
  }
  
  .filter-bar {
    flex-direction: row !important;
  }
  
  .search-group,
  .filter-group {
    width: auto !important;
  }
  
  .table-responsive {
    overflow-x: visible !important;
  }
  
  .modal-content {
    width: auto !important;
    max-width: auto;
    margin: 2rem auto !important;
  }
  
  .form-row {
    flex-direction: row !important;
  }
  
  .form-actions {
    flex-direction: row !important;
  }
  
  .btn-group {
    flex-direction: row !important;
  }
  
  .btn-group .btn {
    width: auto !important;
  }
}

/* 平板端适配 (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  .nav-container {
    padding: 0 1rem;
  }
  
  .nav-logo {
    font-size: 1.2rem;
  }
  
  .logo-img {
    width: 32px;
    height: 32px;
  }
  
  .nav-menu .nav-link {
    padding: 0.5rem 0.8rem;
    font-size: 0.9rem;
  }
  
  .nav-search input {
    width: 180px;
  }
  
  .hero-content h1 {
    font-size: 2.2rem;
  }
  
  .video-grid,
  .tea-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
  
  .filter-bar {
    flex-wrap: wrap;
  }
  
  .modal-content {
    max-width: 450px;
  }
}

/* 移动端适配 (max-width: 768px) */
@media (max-width: 768px) {
  /* 移动端专用字体和间距优化 */
  body {
    font-size: 16px;
    line-height: 1.5;
  }
  
  .nav-container {
    padding: 0 0.75rem;
    height: 56px;
  }
  
  .nav-logo {
    font-size: 1rem;
  }
  
  .logo-img {
    width: 24px;
    height: 24px;
  }
  
  .hero-content h1 {
    font-size: 1.6rem;
    line-height: 1.3;
  }
  
  .hero-content p {
    font-size: 0.9rem;
    line-height: 1.4;
  }
  
  .section-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }
  
  .btn {
    font-size: 0.9rem;
    padding: 0.75rem 1.5rem;
    min-height: 44px; /* 移动端触摸目标最小尺寸 */
  }
  
  /* 移动端导航优化 */
  .nav-menu {
    top: 56px;
    padding: 1.5rem 1rem;
  }
  
  .nav-menu .nav-link {
    font-size: 1rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.1);
  }
  
  /* 移动端间距优化 */
  .container {
    padding: 0 1rem;
  }
  
  .user-management-container {
    /* margin-top: 56px; */
    padding: 1rem;
  }
  
  .upload-container,
  .table-container,
  .modal-content {
    margin: 0.5rem;
    border-radius: 8px;
  }
  
  /* 移动端卡片样式 */
  .video-card,
  .tea-card,
  .stat-card {
    padding-left: 1rem;
    padding-right: 1rem;
    padding-bottom: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  }
  
  /* 移动端表单优化 */
  .form-group label {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
  }
  
  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 16px; /* 防止iOS缩放 */
    padding: 0.75rem;
    min-height: 44px;
  }
  
  /* 移动端图片优化 */
  .video-thumbnail video,
  .tea-image img {
    height: 200px;
    object-fit: cover;
  }
  
  /* 移动端滚动优化 */
  .nav-menu,
  .modal-content {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }
  
  /* 移动端触摸反馈 */
  .btn,
  .nav-link,
  .video-card,
  .tea-card {
    -webkit-tap-highlight-color: transparent;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
  }
  
  .btn:active,
  .nav-link:active,
  .video-card:active,
  .tea-card:active {
    transform: scale(0.98);
  }
}

/* 超小屏幕适配 (max-width: 480px) */
@media (max-width: 480px) {
  body {
    font-size: 14px;
  }
  
  .nav-container {
    padding: 0 0.5rem;
  }
  
  .hero-content h1 {
    font-size: 1.4rem;
  }
  
  .section-title {
    font-size: 1.3rem;
  }
  
  .btn {
    font-size: 0.85rem;
    padding: 0.625rem 1.25rem;
  }
  
  .video-grid,
  .tea-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .filter-bar {
    gap: 0.5rem;
  }
  
  .modal-content {
    margin: 0.25rem;
    padding: 1rem;
  }
  
  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 14px;
    padding: 0.625rem;
  }
}

/* 横屏模式特殊处理 */
@media (max-width: 768px) and (orientation: landscape) {
  .nav-menu {
    max-height: 70vh;
    overflow-y: auto;
  }
  
  .hero-content {
    padding: 2rem 1rem;
  }
  
  .video-grid,
  .tea-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .modal-content {
    max-width: 80%;
    max-height: 80vh;
  }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .logo-img,
  .user-avatar img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* 深色模式适配 */
@media (prefers-color-scheme: dark) {
  @media (max-width: 768px) {
    .nav-menu {
      background: #1a1a1a;
      color: #ffffff;
    }
    
    .nav-menu .nav-link {
      border-bottom-color: #333;
      color: #ffffff;
    }
    
    .modal-content {
      background: #1a1a1a;
      color: #ffffff;
    }
  }
}

/* 移动端视频权限标签样式 */
@media (max-width: 768px) {
  .video-title .video-badge {
    font-size: 1rem;
    padding: 0.15rem 0.4rem;
    border-radius: 8px;
    margin-left: 0.3rem;
  }
}

/* 移动端分类导航溢出修复 */
@media (max-width: 768px) {
  .video-categories,
  .tea-categories {
    padding: 1rem 0;
    overflow-x: hidden;
  }
  
  .category-tabs,
  .product-filters {
    max-width: 100vw;
    box-sizing: border-box;
    margin-bottom: 1.5rem;
  }
  
  /* 确保最后一个标签有右边距 */
  .category-tabs::after,
  .product-filters::after {
    content: '';
    flex-shrink: 0;
    width: 1rem;
    min-width: 1rem;
  }
}

/* 超小屏幕分类导航优化 */
@media (max-width: 375px) {
  .video-categories,
  .tea-categories {
    padding: 0.8rem 0;
  }
}