/* 追光视频 —— 全站样式 */
:root {
  --bg: #0f1115;
  --bg2: #171a21;
  --card: #1c2029;
  --card-hover: #232836;
  --border: #2a3040;
  --text: #e8eaef;
  --text-dim: #9aa3b2;
  --accent: #00a1d6;
  --accent2: #00b3e0;
  --danger: #e5484d;
  --ok: #46a758;
  --radius: 10px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

/* 顶栏 */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 17, 21, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1280px; margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.logo { font-size: 22px; font-weight: 700; color: var(--accent); white-space: nowrap; }
.logo small { font-size: 12px; color: var(--text-dim); font-weight: 400; margin-left: 4px; }
.nav-cats { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.nav-cats a {
  padding: 6px 12px; border-radius: 20px; font-size: 14px; color: var(--text-dim);
  transition: all .15s;
}
.nav-cats a:hover { color: var(--text); background: var(--card); }
.nav-cats a.active { color: #fff; background: var(--accent); }
.search-box { display: flex; }
.search-box input {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  border-radius: 20px 0 0 20px; padding: 7px 14px; width: 180px; outline: none;
}
.search-box button {
  border: 1px solid var(--border); border-left: 0; background: var(--card); color: var(--text-dim);
  border-radius: 0 20px 20px 0; padding: 7px 14px;
}
.header-link { font-size: 13px; color: var(--text-dim); padding: 6px 10px; border-radius: 8px; }
.header-link:hover { color: var(--text); background: var(--card); }

.container { max-width: 1280px; margin: 0 auto; padding: 16px 20px 40px; }

/* 轮播 */
.slider-wrap { position: relative; border-radius: var(--radius); overflow: hidden; margin-bottom: 24px; }
.slider-track { display: flex; transition: transform .4s; }
.slider-item { min-width: 100%; position: relative; aspect-ratio: 21/9; background: var(--bg2); }
.slider-item img { width: 100%; height: 100%; object-fit: cover; }
.slider-item .slider-title {
  position: absolute; left: 24px; bottom: 18px;
  background: rgba(0,0,0,.55); padding: 6px 14px; border-radius: 6px; font-size: 18px;
}
.slider-dots { position: absolute; right: 16px; bottom: 12px; display: flex; gap: 6px; }
.slider-dots span { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.35); cursor: pointer; }
.slider-dots span.on { background: #fff; }

/* 区块标题 */
.section-title { display: flex; align-items: center; gap: 10px; margin: 22px 0 14px; font-size: 18px; font-weight: 600; }
.section-title::before { content: ""; width: 4px; height: 18px; background: var(--accent); border-radius: 2px; }
.section-title .more { margin-left: auto; font-size: 13px; color: var(--text-dim); font-weight: 400; }

/* 视频网格 */
.video-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.video-card {
  background: var(--card); border-radius: var(--radius); overflow: hidden;
  transition: transform .15s, background .15s;
}
.video-card:hover { transform: translateY(-3px); background: var(--card-hover); }
.video-card .thumb { position: relative; aspect-ratio: 16/9; background: #000; }
.video-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.video-card .thumb .duration {
  position: absolute; right: 6px; bottom: 6px; background: rgba(0,0,0,.7);
  font-size: 12px; padding: 1px 6px; border-radius: 4px;
}
.video-card .thumb .play-icon {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity .2s; font-size: 34px;
}
.video-card:hover .play-icon { opacity: 1; }
.video-card .info { padding: 10px 12px; }
.video-card .title { font-size: 14px; height: 2.6em; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.video-card .meta { margin-top: 6px; font-size: 12px; color: var(--text-dim); display: flex; justify-content: space-between; }

/* 信息流广告卡片 */
.feed-ad {
  background: linear-gradient(135deg, #1d2333, #2a2236);
  border: 1px dashed #3a4360; border-radius: var(--radius); overflow: hidden;
  display: flex; align-items: center; cursor: pointer; transition: transform .15s;
}
.feed-ad:hover { transform: translateY(-3px); }
.feed-ad .ad-thumb { width: 200px; aspect-ratio: 16/9; background: #000; flex-shrink: 0; position: relative; }
.feed-ad .ad-thumb img { width: 100%; height: 100%; object-fit: cover; }
.feed-ad .ad-thumb .ad-badge {
  position: absolute; top: 6px; left: 6px; background: var(--danger); color: #fff;
  font-size: 11px; padding: 1px 8px; border-radius: 4px;
}
.feed-ad .ad-info { padding: 12px 16px; flex: 1; }
.feed-ad .ad-info .ad-name { font-size: 15px; font-weight: 600; }

/* 播放页 */
.play-layout { display: grid; grid-template-columns: 1fr 320px; gap: 18px; }
@media (max-width: 900px) { .play-layout { grid-template-columns: 1fr; } }
.player-shell { position: relative; background: #000; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/9; }
.player-shell video { width: 100%; height: 100%; }
.ad-overlay {
  position: absolute; inset: 0; background: #000; display: none;
  align-items: center; justify-content: center; flex-direction: column; gap: 12px; z-index: 10;
}
.ad-overlay.show { display: flex; }
.ad-overlay video, .ad-overlay img { max-width: 100%; max-height: 100%; }
.ad-overlay .ad-skip { position: absolute; right: 16px; top: 16px; background: rgba(0,0,0,.6); color: #fff; padding: 6px 14px; border-radius: 6px; font-size: 13px; }
.ad-overlay .ad-label { position: absolute; left: 16px; top: 16px; background: var(--danger); color: #fff; font-size: 12px; padding: 2px 10px; border-radius: 4px; }
.video-info { padding: 16px 2px; }
.video-info h1 { font-size: 20px; line-height: 1.4; }
.video-info .meta-row { display: flex; gap: 16px; align-items: center; margin: 10px 0; font-size: 13px; color: var(--text-dim); flex-wrap: wrap; }
.video-info .desc { color: var(--text-dim); font-size: 14px; background: var(--card); border-radius: 8px; padding: 12px 14px; }
.tag { background: var(--card); color: var(--accent2); border-radius: 4px; padding: 1px 8px; font-size: 12px; }
.related-title { margin: 18px 0 12px; font-size: 16px; font-weight: 600; }

/* 空态 / 加载 */
.empty { text-align: center; color: var(--text-dim); padding: 60px 0; }
.loading { text-align: center; color: var(--text-dim); padding: 40px 0; }
.pager { display: flex; justify-content: center; gap: 8px; margin-top: 24px; }
.pager button { background: var(--card); border: 1px solid var(--border); color: var(--text); padding: 7px 18px; border-radius: 8px; }
.pager button:disabled { opacity: .4; cursor: not-allowed; }

/* 页脚 */
.site-footer { border-top: 1px solid var(--border); padding: 22px 20px; text-align: center; color: var(--text-dim); font-size: 13px; }

/* 移动端适配 */
@media (max-width: 1100px) { .video-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 820px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .header-inner { gap: 10px; }
  .search-box input { width: 120px; }
  .slider-item { aspect-ratio: 16/9; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .nav-cats { order: 3; width: 100%; }
  .logo { font-size: 18px; }
}