/* 重置样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 紧凑扁平主题变量 */
:root {
  --accent-color: #2563eb; /* 深蓝色 */
  --text-primary: #ffffff;   /* 白色文字 */
  --background-main: #0f172a;   /* 深色背景 */
  --card-surface: #1e293b;   /* 卡片背景 */
  --header-bg: #020617; /* 头部背景 */
  --header-text: #f8fafc; /* 头部文字 */
  --footer-bg: #020617; /* 页脚背景 */
  --footer-text: #94a3b8; /* 页脚文字 */
  --border-color: #334155; /* 边框颜色 */
  --hover-color: #3b82f6; /* 悬停蓝色 */
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--background-main);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 16px;
  margin: 0;
  padding: 0;
}

.wrapper {
  width: auto;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--hover-color);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 通用图片显示修复 */
.media-thumbnail img,
.suggested-content img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: var(--card-surface);
}

/* 确保图片容器有高度 */
.media-thumbnail {
  display: block;
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--card-surface);
  min-height: 100px;
}

/* 视频播放器适配样式 */
.video-wrapper {
  width: 100%;
  margin: 0 auto 15px auto;
  display: block;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 比例 */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  outline: none; /* 移除获取焦点时的蓝色边框 */
}

.video-js {
  width: 100% !important;
  height: 100% !important;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1; /* 确保视频在正确的层级 */
  outline: none; /* 移除获取焦点时的边框 */
}

.video-js .vjs-play-progress {
  background-color: var(--accent-color);
}

/* 头部导航栏 */
.main-header {
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 0; /* 更紧凑 */
  position: sticky;
  top: 0;
  z-index: 100;
  color: var(--header-text);
}

.main-header .wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-section {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex: 1;
}

.brand-logo {
  font-size: 20px;
  font-weight: 600;
  margin-right: 15px;
}

.brand-logo a {
  color: var(--header-text);
}

.search-section {
  display: flex;
  align-items: center;
}

.primary-nav {
  flex: 2;
  margin-left: 10px;
}

.primary-nav ul {
  display: flex;
  list-style: none;
  flex-wrap: wrap;
  max-height: 50px; /* 更紧凑的导航高度 */
  overflow: hidden;
  gap: 1px;
}

.primary-nav li {
  margin: 2px 0;
}

.primary-nav a {
  color: var(--header-text);
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 3px;
  white-space: nowrap;
  font-weight: normal;
}

.primary-nav a.all-categories {
  background-color: var(--accent-color);
  color: white;
}

.primary-nav a:hover {
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--hover-color);
}

.search-trigger {
  background: rgba(37, 99, 235, 0.15);
  border: none;
  color: var(--header-text);
  cursor: pointer;
  font-size: 14px;
  padding: 8px 15px;
  border-radius: 3px;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.search-trigger:hover {
  background-color: var(--accent-color);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1100;
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--header-text);
  border-radius: 1px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* 搜索模态框 */
.search-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.search-overlay.active {
  display: flex;
}

.search-form {
  width: 100%;
  max-width: 500px;
  padding: 20px;
}

.search-field {
  width: 100%;
  padding: 15px 20px;
  font-size: 16px;
  background: var(--card-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.search-field:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.search-field::placeholder {
  color: var(--footer-text);
}

.search-close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 24px;
  color: var(--text-primary);
  cursor: pointer;
}

.search-close:hover {
  color: var(--hover-color);
}

/* 主内容区 */
.main-content {
  padding: 15px 0; /* 更紧凑的间距 */
  min-height: 60vh;
}

/* 视频卡片样式 - 单行扁平设计，只占屏幕一半宽度 */
.video-grid {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 50%;
  margin: 0 auto;
}

.media-card {
  background: var(--card-surface);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  display: block;
  padding: 0;
  min-height: unset;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.media-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-1px);
}

.media-thumbnail {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%; /* 正常16:9比例，因为标题现在在外面 */
  overflow: hidden;
  border-radius: 6px 6px 0 0;
  background: #000;
  display: block;
  position: relative;
}

.media-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px 6px 0 0;
}

.media-title {
  padding: 12px 15px; /* 改为底部标题样式 */
  font-size: 32px; /* 文章标题字体大一倍 */
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.3;
  text-align: left;
  background: var(--card-surface);
  border-radius: 0 0 6px 6px;
  border-top: 1px solid var(--border-color);
}

.media-title a {
  color: #ffffff;
  transition: color 0.2s ease;
}

.media-title a:hover {
  color: var(--hover-color);
}

.category-badge {
  position: absolute;
  left: 8px;
  top: 8px;
  background-color: var(--accent-color);
  color: #ffffff;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 3px;
  z-index: 10;
  font-weight: 500;
}

/* 相关视频专用 - 移动端调整为正常大小 */
.suggested-content {
  margin: 20px 0;
  width: auto;
}

.suggested-content .video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* PC端一排两个卡片 */
  gap: 20px;
  max-width: 100%;
}

.suggested-content .media-card {
  display: block;
  padding: 0;
}

.suggested-content .media-thumbnail {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 6px 6px 0 0;
  background: #000;
  display: block;
  position: relative;
}

.suggested-content .media-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px 6px 0 0;
}

.suggested-content .media-title {
  padding: 10px 12px; /* PC端相关内容标题样式 */
  font-size: 24px; /* PC端相关内容字体也大一倍 */
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.3;
  text-align: left;
  background: var(--card-surface);
  border-radius: 0 0 6px 6px;
  border-top: 1px solid var(--border-color);
}

.suggested-content .media-title a {
  color: #ffffff;
  text-decoration: none;
  transition: color 0.2s ease;
}

.suggested-content .media-title a:hover {
  color: var(--hover-color);
}

/* 分页导航 */
.page-navigation {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 25px 0; /* 更紧凑 */
  flex-wrap: wrap;
  gap: 6px;
}

.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px; /* 更小的分页按钮 */
  height: 36px;
  margin: 0 3px 8px;
  padding: 0 10px;
  background: var(--card-surface);
  color: var(--text-primary);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.page-link.current {
  background: var(--accent-color);
  color: #ffffff;
  border-color: var(--accent-color);
}

.page-link:hover:not(.current) {
  background: var(--hover-color);
  color: #ffffff;
  transform: translateY(-1px);
}

.page-link.dots {
  background: none;
  border: none;
  color: var(--footer-text);
}

/* 页脚 */
.main-footer {
  background-color: var(--footer-bg);
  padding: 25px 0; /* 更紧凑 */
  margin-top: 30px;
  color: var(--footer-text);
  text-align: center;
  border-top: 1px solid var(--border-color);
  font-size: 12px;
}

.main-footer .wrapper {
  max-width: 800px;
}

.footer-info {
  font-size: 12px;
  line-height: 1.6;
}

.footer-info p {
  margin-bottom: 6px;
}

/* 无结果 */
.no-results {
  text-align: center;
  padding: 25px;
  background-color: var(--card-surface);
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

/* 移动端导航背景遮罩 */
.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 999;
}

.mobile-overlay.active {
  display: block;
}

/* 分类列表 */
.categories-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 15px;
}

.category-item {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--card-surface);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text-primary);
  transition: all 0.3s ease;
  text-decoration: none;
  font-weight: 500;
}

.category-item:hover {
  background-color: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
}

.category-count {
  margin-left: 8px;
  font-size: 11px;
  color: var(--footer-text);
  opacity: 0.9;
}

.category-item:hover .category-count {
  color: white;
}

/* 大屏幕相关内容布局 */
@media (min-width: 1201px) {
  .suggested-content .video-grid {
    grid-template-columns: repeat(2, 1fr); /* 大屏幕保持两列 */
    gap: 25px;
  }
}

.refresh-btn {
  background: rgba(37, 99, 235, 0.2);
  border: none;
  color: var(--header-text);
  cursor: pointer;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 4px;
  margin-left: 6px;
  display: inline-flex;
  align-items: center;
  transition: all 0.25s ease;
}

.refresh-btn:hover {
  background: var(--accent-color);
  transform: translateY(-1px);
}

.refresh-btn svg {
  display: block;
}

/* 响应式设计 */
@media (max-width: 1200px) {
  .wrapper {
    margin: 0 auto;
    padding: 0 3%;
  }
  .suggested-content {
    width: auto;
  }
  .suggested-content .video-grid {
    grid-template-columns: repeat(2, 1fr); /* 1200px断点保持两列 */
    gap: 18px;
  }
}

@media (max-width: 992px) {
  .video-grid {
    gap: 15px;
    max-width: 70%; /* 在中等屏幕上稍微大一点 */
  }
  .suggested-content .video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 992px断点仍然保持两列 */
    gap: 15px;
    max-width: 100%;
  }
  .suggested-content .media-card {
    display: block;
    padding: 0;
    min-height: unset;
    position: relative;
  }
  .suggested-content .media-thumbnail {
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 保持正常16:9比例 */
    border-radius: 6px 6px 0 0;
    position: relative;
  }
  .suggested-content .media-title {
    padding: 8px 12px;
    font-size: 18px; /* 移动端稍微小一点但仍然比原来大 */
    color: var(--text-primary);
    background: var(--card-surface);
    text-align: left;
    font-weight: 500;
    border-radius: 0 0 6px 6px;
    border-top: 1px solid var(--border-color);
  }
  .video-title {
    font-size: 20px;
  }
  .suggested-content {
    width: auto;
  }
  .primary-nav {
    position: fixed;
    top: 0;
    right: -280px;
    width: 260px;
    height: 100vh;
    background: var(--header-bg);
    padding: 80px 15px 15px;
    border-left: 1px solid var(--border-color);
    transition: right 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    margin-left: 0;
  }
  .primary-nav.active {
    right: 0;
  }
  .primary-nav ul {
    flex-direction: column;
    align-items: flex-start;
    max-height: none;
    gap: 6px;
  }
  .primary-nav li {
    margin: 6px 0;
    width: 100%;
  }
  .primary-nav a {
    display: block;
    width: 100%;
    padding: 10px 12px;
    text-align: left;
  }
  .nav-toggle {
    display: flex;
    margin-left: 15px;
  }
}

@media (max-width: 768px) {
  .main-header .wrapper {
    flex-direction: row;
    align-items: center;
    padding: 0 12px;
  }
  
  .brand-section {
    flex-grow: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .brand-logo {
    margin-right: 0;
    font-size: 18px; /* 稍微大一点 */
  }
  
  .search-section {
    margin-right: 12px;
  }
  
  .search-trigger {
    padding: 8px 12px; /* 恢复正常大小 */
    font-size: 13px; /* 恢复正常大小 */
  }
  
  .video-grid {
    max-width: 90%; /* 在移动端稍微大一点 */
  }
  
  .media-title {
    font-size: 20px; /* 移动端标题也要大一些 */
    padding: 10px 12px; /* 移动端内边距 */
  }
  
  .video-title {
    font-size: 20px; /* 恢复正常大小 */
  }
  
  .refresh-btn {
    padding: 6px 10px; /* 恢复正常大小 */
    font-size: 12px; /* 恢复正常大小 */
    margin-left: 8px;
  }
  .suggested-content {
    width: auto;
    margin: 20px 0;
  }
  .suggested-content .video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 768px断点保持两列 */
    gap: 15px; /* 增加间距 */
    max-width: 100%;
  }
  .suggested-content .media-card {
    display: block;
    padding: 0;
    min-height: unset;
    position: relative;
  }
  .suggested-content .media-thumbnail {
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 正常16:9比例 */
    border-radius: 6px 6px 0 0;
    position: relative;
  }
  .suggested-content .media-title {
    padding: 8px 12px;
    font-size: 16px; /* 768px断点的相关内容标题 */
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.3;
    text-align: left;
    background: var(--card-surface);
    border-radius: 0 0 6px 6px;
    border-top: 1px solid var(--border-color);
  }
  .suggested-content .media-title a {
    color: var(--text-primary); /* 768px断点底部标题链接颜色 */
    text-decoration: none;
  }
  .suggested-content .media-title a:hover {
    color: var(--hover-color);
  }
}

@media (max-width: 576px) {
  .pagination-desktop {
    display: none;
  }
  .video-grid {
    max-width: 100%; /* 小屏幕占满宽度 */
  }
  .suggested-content .video-grid {
    display: grid;
    grid-template-columns: 1fr; /* 576px断点改为单列 */
    gap: 15px; /* 保持合理间距 */
    max-width: 100%;
  }
  .suggested-content .media-card {
    display: block;
    padding: 0;
    min-height: unset;
    position: relative;
  }
  .suggested-content .media-thumbnail {
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 正常16:9比例 */
    border-radius: 6px 6px 0 0;
    position: relative;
  }
  .suggested-content .media-title {
    padding: 8px 10px; /* 576px断点相关内容底部标题样式 */
    font-size: 14px; /* 576px断点相关内容标题字体 */
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.3;
    text-align: left;
    background: var(--card-surface);
    border-radius: 0 0 6px 6px;
    border-top: 1px solid var(--border-color);
  }
  .suggested-content .media-title a {
    color: var(--text-primary); /* 576px断点底部标题链接颜色 */
    text-decoration: none;
  }
  .suggested-content .media-title a:hover {
    color: var(--hover-color);
  }
}

@media (max-width: 600px) {
  .wrapper {
    margin: 0;
    padding: 0 8px;
    width: 100%;
    max-width: 100%;
  }
  
  .video-wrapper {
    width: 100%;
    margin: 0 0 10px 0;
  }
  
  .portrait-mode .video-wrapper {
    width: 100%;
    max-width: 100%;
  }
  
  .video-container {
    border-radius: 0;
  }
  
  /* 视频页面标题和相关视频左右留出边距 */
  h1.section-title {
    padding: 0 12px;
    margin-bottom: 12px;
  }
  
  .suggested-content {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }
  
  /* 恢复卡片布局样式 */
  .video-grid {
    gap: 10px;
  }
  
  .media-card {
    flex-direction: column;
    min-height: unset;
    padding: 0;
  }
  
  .media-thumbnail {
    width: 100%;
    border-radius: 6px 6px 0 0;
    flex-basis: unset;
    padding-bottom: 12%;
  }
  
  .media-title {
    padding: 8px 10px;
    font-size: 16px; /* 600px断点主标题 */
    font-weight: 500;
    text-align: left;
    color: var(--text-primary);
    background: var(--card-surface);
    border-radius: 0 0 6px 6px;
    border-top: 1px solid var(--border-color);
  }
  
  .suggested-content .media-thumbnail {
    padding-bottom: 12%;
  }
}

@media (max-width: 480px) {
  .media-thumbnail {
    padding-bottom: 14%; /* 主卡片保持扁平 */
  }
  .suggested-content .media-thumbnail {
    padding-bottom: 50%; /* 相关内容卡片稍微正常一点，但不要太高 */
  }
  .media-title {
    font-size: 18px; /* 480px断点主标题 */
    font-weight: 500;
    padding: 8px 12px;
  }
  .suggested-content .media-title {
    font-size: 14px; /* 480px断点相关内容标题 */
    padding: 6px 10px;
  }
  .wrapper {
    padding: 0 8px; /* 稍微增加边距 */
  }
}

@media (max-width: 900px) {
  .media-card, .media-thumbnail {
    min-height: unset;
    height: auto;
  }
  .media-thumbnail {
    flex-basis: unset;
    width: 100%;
    padding-bottom: 12%;
  }
  .media-title {
    font-size: 20px; /* 900px断点标题字体 */
    font-weight: 500;
  }
  .media-title a {
    color: var(--text-primary); /* 900px断点底部标题链接颜色 */
    text-decoration: none;
  }
  .media-title a:hover {
    color: var(--hover-color);
  }
}

.section-title {
  font-size: 18px;
  margin-bottom: 15px;
  font-weight: 500;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  text-align: center;
}