/**
 * Premium SEO Template - Responsive Design
 * 完全响应式设计，支持所有设备尺寸
 */

/* ========== 平板设备 (768px - 1024px) ========== */
@media (max-width: 1024px) {
  .container {
    max-width: 960px;
  }

  .navbar-container {
    height: 56px;
  }

  .navbar-menu {
    margin: 0 10px;
  }

  .nav-link {
    padding: 18px 10px;
    font-size: 13px;
  }

  .search-input {
    width: 140px;
  }

  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
  }

  .detail-info-section {
    grid-template-columns: 200px 1fr;
    gap: 20px;
  }

  .section-title {
    font-size: 20px;
  }

  .detail-title {
    font-size: 24px;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========== 小平板/大手机 (768px) ========== */
@media (max-width: 768px) {
  .container {
    max-width: 100%;
    padding: 0 12px;
  }

  /* 导航栏调整 */
  .navbar-container {
    height: 52px;
    padding: 0 12px;
  }

  .navbar-brand {
    margin-right: 15px;
  }

  .brand-logo {
    font-size: 18px;
  }

  .navbar-toggle {
    display: flex;
  }

  .navbar-menu {
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    margin: 0;
    padding: 0;
  }

  .navbar-menu.active {
    max-height: 500px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-item {
    margin: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
  }

  .nav-link {
    padding: 15px 12px;
    font-size: 14px;
    width: 100%;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(0, 0, 0, 0.1);
    border: none;
    box-shadow: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    margin: 0;
    padding: 0;
  }

  .nav-item.active .dropdown-menu {
    max-height: 500px;
  }

  .dropdown-item a {
    padding: 10px 12px 10px 30px;
  }

  .navbar-search {
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    margin: 0;
    padding: 10px 12px;
    background: rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .search-input {
    width: 100%;
  }

  /* 视频网格 */
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
  }

  /* 详情页布局 */
  .detail-info-section {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px;
  }

  .detail-poster {
    max-width: 200px;
    margin: 0 auto;
  }

  .detail-title {
    font-size: 20px;
  }

  .detail-info-list {
    gap: 10px;
  }

  .info-item {
    font-size: 13px;
  }

  /* 分页 */
  .pagination-list {
    gap: 3px;
  }

  .pagination-link {
    padding: 6px 10px;
    font-size: 12px;
  }

  /* 页脚 */
  .footer-links {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    font-size: 20px;
  }

  /* 分区标题 */
  .section-title {
    font-size: 18px;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .section-more {
    align-self: flex-end;
  }

  /* 播放列表 */
  .episode-list {
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  }

  .source-tabs {
    gap: 5px;
  }

  .source-tab button {
    padding: 10px 15px;
    font-size: 13px;
  }

  /* 播放器 */
  .player-wrapper {
    margin-bottom: 20px;
  }

  .player-container {
    height: auto;
  }

  /* 搜索表单 */
  .search-form {
    width: 100%;
  }

  .search-input-wrapper {
    width: 100%;
  }
}

/* ========== 手机设备 (480px - 768px) ========== */
@media (max-width: 480px) {
  .container {
    padding: 0 10px;
  }

  /* 导航栏 */
  .navbar-container {
    height: 48px;
    padding: 0 10px;
  }

  .navbar-brand {
    margin-right: 10px;
  }

  .brand-logo {
    font-size: 16px;
  }

  .brand-text {
    display: none;
  }

  .navbar-search {
    display: none;
  }

  /* 视频网格 */
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
  }

  .video-title {
    font-size: 13px;
  }

  .video-meta {
    font-size: 11px;
  }

  /* 详情页 */
  .detail-info-section {
    padding: 15px;
  }

  .detail-poster {
    max-width: 150px;
  }

  .detail-title {
    font-size: 18px;
  }

  .info-label {
    min-width: 70px;
    font-size: 13px;
  }

  .info-value {
    font-size: 13px;
  }

  /* 分页 */
  .pagination-wrapper {
    padding: 15px;
  }

  .pagination-list {
    gap: 2px;
  }

  .pagination-link {
    padding: 5px 8px;
    font-size: 11px;
  }

  .pagination-item.disabled .pagination-link {
    display: none;
  }

  .jump-form {
    flex-wrap: wrap;
    justify-content: center;
    gap: 5px;
  }

  .jump-input {
    width: 50px;
    font-size: 12px;
  }

  .jump-button {
    padding: 5px 12px;
    font-size: 12px;
  }

  /* 页脚 */
  .footer-links {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .footer-title {
    font-size: 14px;
    margin-bottom: 10px;
  }

  .footer-list a {
    font-size: 12px;
  }

  .site-name {
    font-size: 16px;
  }

  .site-url {
    font-size: 12px;
  }

  .footer-copyright {
    font-size: 11px;
  }

  /* 返回顶部 */
  .back-to-top {
    bottom: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  /* 分区标题 */
  .section-title {
    font-size: 16px;
    padding-left: 12px;
  }

  .section-title::before {
    width: 3px;
    height: 20px;
  }

  /* 播放列表 */
  .episode-list {
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: 8px;
  }

  .episode-link {
    padding: 8px 6px;
    font-size: 12px;
  }

  .source-tab button {
    padding: 8px 12px;
    font-size: 12px;
  }

  /* 面包屑 */
  .breadcrumb-list {
    font-size: 12px;
  }

  .breadcrumb-item:not(:last-child)::after {
    margin: 0 5px;
  }

  /* 播放器 */
  .player-info {
    padding: 15px;
  }

  .player-title {
    font-size: 18px;
  }

  .player-meta {
    font-size: 12px;
    gap: 10px;
  }

  .meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .meta-item i {
    font-size: 14px;
  }
}

/* ========== 超小手机 (< 360px) ========== */
@media (max-width: 360px) {
  .container {
    padding: 0 8px;
  }

  .navbar-container {
    height: 44px;
    padding: 0 8px;
  }

  .brand-logo {
    font-size: 14px;
  }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .video-item {
    border-radius: 4px;
  }

  .video-title {
    font-size: 12px;
  }

  .detail-title {
    font-size: 16px;
  }

  .section-title {
    font-size: 15px;
  }

  .pagination-link {
    padding: 4px 6px;
    font-size: 10px;
  }

  .footer-title {
    font-size: 13px;
  }

  .footer-list a {
    font-size: 11px;
  }

  .site-name {
    font-size: 14px;
  }

  .back-to-top {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .episode-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .episode-link {
    padding: 6px 4px;
    font-size: 11px;
  }
}

/* ========== 横屏模式 (Landscape) ========== */
@media (max-height: 500px) and (orientation: landscape) {
  .navbar-container {
    height: 44px;
  }

  .nav-link {
    padding: 15px 10px;
  }

  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }

  .detail-info-section {
    grid-template-columns: 150px 1fr;
    gap: 15px;
    padding: 15px;
  }

  .detail-poster {
    max-width: 150px;
  }

  .section-title {
    font-size: 16px;
  }
}

/* ========== 高分辨率屏幕 (Retina) ========== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .cover-image,
  .poster-image {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* ========== 打印样式 ========== */
@media print {
  .site-header,
  .site-footer,
  .back-to-top,
  .navbar-toggle,
  .search-form,
  .pagination-wrapper,
  .ad-carousel,
  .ad-header,
  .ad-footer,
  .ad-middle,
  .ad-list,
  .ad-detail,
  .ad-player {
    display: none !important;
  }

  .container {
    max-width: 100%;
  }

  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .detail-info-section {
    grid-template-columns: 1fr;
  }

  body {
    background: #fff;
    color: #000;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}

/* ========== 暗黑模式支持 ========== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-light: #1a1a1a;
    --bg-white: #2a2a2a;
    --text-dark: #f0f0f0;
    --text-light: #b0b0b0;
    --text-muted: #808080;
    --border-color: #444;
  }

  body {
    background-color: var(--bg-light);
    color: var(--text-dark);
  }

  .video-item {
    background: var(--bg-white);
  }

  .detail-info-section {
    background: var(--bg-white);
  }

  .play-section {
    background: var(--bg-white);
  }

  .pagination-wrapper {
    background: var(--bg-white);
  }

  .pagination-link {
    background: var(--bg-white);
  }

  .dropdown-menu {
    background: var(--bg-white);
  }

  .episode-link {
    background: var(--bg-white);
  }
}

/* ========== 无障碍支持 ========== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========== 高对比度模式 ========== */
@media (prefers-contrast: more) {
  :root {
    --primary-color: #000;
    --secondary-color: #000;
    --accent-color: #0000ff;
    --highlight-color: #ff0000;
    --border-color: #000;
  }

  a {
    text-decoration: underline;
  }

  .nav-link:focus,
  .pagination-link:focus,
  .video-link:focus {
    outline: 3px solid #0000ff;
    outline-offset: 2px;
  }
}