:root {
  --bg: #0f0f12;
  --bg-soft: #17171c;
  --card: #1c1c22;
  --text: #f5f5f7;
  --text-dim: #a0a0a8;
  --accent: #fe2c55;       /* 抖音红 */
  --accent-2: #25f4ee;     /* 抖音青 */
  --radius: 14px;
  --gap: 14px;
  --maxw: 1400px;
}

* { box-sizing: border-box; }

/* 移动端：去掉 300ms 点击延迟，去掉高亮 */
html { -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* ===== 顶部 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: linear-gradient(180deg, rgba(15,15,18,.96), rgba(15,15,18,.82));
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 20px;
}
.site-title {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .5px;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.site-subtitle {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--text-dim);
}
.site-subtitle #count { color: var(--text); font-weight: 700; }

/* ===== 网格 ===== */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 22px 20px 40px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: var(--gap);
}

/* ===== 卡片 ===== */
.card {
  position: relative;
  aspect-ratio: 9 / 16;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  cursor: pointer;
  border: 1px solid rgba(255,255,255,.06);
  transform: translateZ(0);
  transition: transform .18s ease, box-shadow .18s ease;
  /* 关键：海报作为背景图（videos.jpg 缩略图），video 元素叠在上面 */
  background-color: #0a0a0c;
  background-size: cover;
  background-position: center;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,.45);
}
.card.is-previewing {
  /* 预览时给个边框提示 */
  box-shadow: 0 0 0 2px var(--accent), 0 10px 30px rgba(0,0,0,.5);
}
.card-media {
  position: absolute;
  inset: 0;
}
.card-media video,
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: transparent;
}
.card-skeleton {
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, #1a1a20 30%, #23232b 50%, #1a1a20 70%);
  background-size: 220% 100%;
  animation: shimmer 1.3s linear infinite;
}
@keyframes shimmer {
  to { background-position: -220% 0; }
}

/* 标题 + 时长 */
.card-title {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 26px 10px 10px;
  font-size: 12.5px;
  line-height: 1.35;
  color: #fff;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.78));
  text-shadow: 0 1px 3px rgba(0,0,0,.6);
  pointer-events: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-dur {
  position: absolute;
  top: 8px; right: 8px;
  padding: 2px 7px;
  font-size: 11px;
  border-radius: 999px;
  background: rgba(0,0,0,.6);
  color: #fff;
  pointer-events: none;
}

/* 移动端操作提示（淡入淡出） */
.card-hint {
  position: absolute;
  left: 50%;
  bottom: 36px;
  transform: translateX(-50%);
  padding: 4px 10px;
  font-size: 11px;
  color: #fff;
  background: rgba(0,0,0,.5);
  border-radius: 999px;
  pointer-events: none;
  opacity: 0;
  transition: opacity .25s ease;
}
.card:active .card-hint,
.card.is-previewing .card-hint {
  opacity: 1;
}

.card-error {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 14px;
  font-size: 12px;
  color: #ffb4c0;
  background: #211418;
}

/* ===== 空状态 / 页脚 ===== */
.empty-tip {
  text-align: center;
  color: var(--text-dim);
  padding: 60px 20px;
  font-size: 14px;
}
.empty-tip code, .site-footer code {
  background: rgba(255,255,255,.08);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 12px;
}
.site-footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
  padding: 24px 20px 40px;
}

/* ===== 全屏播放器 ===== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0,0,0,.94);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal[hidden] { display: none; }
.modal-stage {
  position: absolute;
  inset: 0;
  display: block;
}
.modal-video {
  /* 占满屏幕，避免某些浏览器因尺寸小自动进入小窗/画中画 */
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
  outline: none;
  display: block;
}
.modal-caption {
  position: absolute;
  left: 0; right: 0; bottom: 16px;
  color: #fff;
  font-size: 14px;
  text-align: center;
  padding: 10px 8px 0;
  text-shadow: 0 1px 4px rgba(0,0,0,.8);
  pointer-events: none;
  z-index: 1;
}
.modal-close {
  position: fixed;
  top: max(16px, env(safe-area-inset-top, 0));
  right: max(16px, env(safe-area-inset-right, 0));
  width: 44px; height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,.55);
  color: #fff;
  font-size: 20px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  z-index: 300;             /* 始终在最上面，绝不被任何东西挡 */
  box-shadow: 0 2px 12px rgba(0,0,0,.5);
}
.modal-close:hover { background: rgba(0,0,0,.78); }
.modal-close:active { background: rgba(0,0,0,.9); transform: scale(0.95); }

/* ===== 全屏播放器缓冲提示 ===== */
.modal-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(0,0,0,.35);
  pointer-events: none;
  z-index: 50;              /* 在 video 之上但在 close 之下 */
  border-radius: 0;
}
.modal-loading[hidden] { display: none; }
.modal-spinner {
  width: 44px;
  height: 44px;
  border: 3.5px solid rgba(255,255,255,.18);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .9s linear infinite;
}
.modal-loading-text {
  color: #fff;
  font-size: 13px;
  opacity: .85;
  letter-spacing: 1px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===== 移动端 ===== */
@media (max-width: 600px) {
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(min(46vw, 190px), 1fr));
    gap: 10px;
  }
  .container { padding: 16px 12px 32px; }
  .header-inner { padding: 14px 14px; }
  .site-title { font-size: 19px; }
}

/* ===== 触摸设备：禁用 hover 抬升效果，避免误触 ===== */
@media (hover: none) {
  .card:hover { transform: none; box-shadow: none; }
  .card:active { transform: scale(0.97); transition: transform .1s ease; }
}