:root {
  color-scheme: dark;
  --bg: #0b0e14;
  --bg-soft: #111621;
  --surface: #161c28;
  --surface-2: #1c2432;
  --border: rgba(255,255,255,.085);
  --border-strong: rgba(255,255,255,.16);
  --text: #eff3fa;
  --text-2: #a2adc0;
  --text-3: #6f7b90;
  --accent: #ff4f7b;
  --accent-2: #7c5cff;
  --live: #ff3b5c;
  --radius: 16px;
  --shadow: 0 10px 34px rgba(0,0,0,.34);
  --topbar-h: 72px;
  --gutter: 20px;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg: #f4f6fb;
    --bg-soft: #eef1f7;
    --surface: #ffffff;
    --surface-2: #f2f5fa;
    --border: rgba(20,30,50,.09);
    --border-strong: rgba(20,30,50,.18);
    --text: #182233;
    --text-2: #55637a;
    --text-3: #8390a4;
    --shadow: 0 8px 26px rgba(26,42,74,.10);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}
body.no-scroll { overflow: hidden; }
button, input { font: inherit; }
button { color: inherit; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

.app-shell { min-height: 100%; background:
  radial-gradient(1000px 460px at 8% -8%, rgba(124,92,255,.14), transparent 62%),
  radial-gradient(880px 420px at 96% 0%, rgba(255,79,123,.11), transparent 60%), var(--bg); }

/* ---------------- topbar ---------------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  padding-top: env(safe-area-inset-top);
}
.topbar-inner {
  max-width: 1720px; margin: 0 auto; min-height: var(--topbar-h);
  padding: 10px var(--gutter);
  display: flex; align-items: center; gap: 14px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; flex: 1; }
.brand-mark {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 11px;
  background: linear-gradient(140deg, var(--accent), var(--accent-2));
  box-shadow: 0 5px 18px rgba(255,79,123,.34);
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 0; margin: auto; width: 11px; height: 13px;
  background: #fff; clip-path: polygon(0 0, 100% 50%, 0 100%);
  border-radius: 2px;
}
.brand-text { min-width: 0; }
.brand-text h1 { margin: 0; font-size: 17px; font-weight: 700; letter-spacing: .2px; line-height: 1.25; }
.brand-text p { margin: 2px 0 0; font-size: 12px; color: var(--text-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.back-btn {
  flex: 0 0 auto; display: inline-flex; align-items: center; gap: 3px;
  height: 38px; padding: 0 12px 0 8px; border-radius: 11px;
  border: 1px solid var(--border); background: var(--surface); cursor: pointer;
  font-size: 13px; transition: background .15s, border-color .15s, transform .15s;
}
.back-btn:hover { background: var(--surface-2); border-color: var(--border-strong); }
.back-btn:active { transform: scale(.97); }
.back-btn[hidden] { display: none; }

.topbar-actions { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
.search-wrap {
  display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 11px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 11px;
  transition: border-color .15s, box-shadow .15s;
}
.search-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(255,79,123,.12); }
.search-wrap svg { width: 16px; height: 16px; color: var(--text-3); flex: 0 0 auto; }
.search-wrap input {
  border: 0; outline: 0; background: transparent; color: var(--text);
  width: 148px; font-size: 13px; min-width: 0;
}
.search-wrap input::placeholder { color: var(--text-3); }
.search-wrap input::-webkit-search-cancel-button { -webkit-appearance: none; }
.search-kbd {
  font-size: 11px; color: var(--text-3); border: 1px solid var(--border);
  border-radius: 5px; padding: 0 5px; line-height: 17px;
}
.icon-btn {
  width: 38px; height: 38px; flex: 0 0 auto; display: grid; place-items: center;
  border: 1px solid var(--border); background: var(--surface); border-radius: 11px;
  cursor: pointer; transition: background .15s, transform .15s;
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn:active { transform: scale(.94); }
.icon-btn.spinning svg { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- masonry ---------------- */
.content { max-width: 1720px; margin: 0 auto; padding: 26px var(--gutter) 40px; }
.grid {
  column-count: 5; column-gap: 18px;
  /* 卡片按列排布，视觉高度由图片自身比例决定 = 瀑布流 */
}
@media (max-width: 1500px) { .grid { column-count: 4; } }
@media (max-width: 1120px) { .grid { column-count: 3; } }
@media (max-width: 760px)  { .grid { column-count: 2; column-gap: 14px; } }
@media (max-width: 420px)  { .grid { column-count: 2; column-gap: 10px; } }

.card {
  display: block; width: 100%; text-align: left; position: relative;
  break-inside: avoid; margin: 0 0 18px; padding: 0;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; cursor: pointer; color: inherit;
  box-shadow: var(--shadow);
  opacity: 0; transform: translateY(10px);
  animation: card-in .38s cubic-bezier(.2,.7,.3,1) forwards;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  -webkit-tap-highlight-color: transparent;
}
@keyframes card-in { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .card { animation: none; opacity: 1; transform: none; transition: none; }
  .icon-btn.spinning svg { animation: none; }
}
.card:hover, .card:focus-visible {
  transform: translateY(-3px); border-color: var(--border-strong);
  box-shadow: 0 16px 40px rgba(0,0,0,.42); outline: none;
}
.card:focus-visible { box-shadow: 0 0 0 2px var(--accent), var(--shadow); }

.thumb { position: relative; display: block; width: 100%; background: var(--surface-2); overflow: hidden; }
/* 图片没到位前先按比例占位，避免瀑布流在加载过程中反复跳动；加载后交还原图比例 */
.card:not(.playable) .thumb:not(.loaded) { aspect-ratio: 1 / 1; }
.card.playable .thumb:not(.loaded) { aspect-ratio: 3 / 4; }
.thumb::before { /* 骨架屏，图片加载完成后淡出 */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 20%, rgba(255,255,255,.07) 45%, transparent 70%);
  background-size: 220% 100%; animation: shimmer 1.4s infinite;
}
@keyframes shimmer { to { background-position-x: -220%; } }
.thumb.loaded::before { display: none; }
.thumb img {
  display: block; width: 100%; height: auto;
  object-fit: cover; opacity: 0; transition: opacity .32s ease, transform .4s ease;
}
.card:not(.playable) .thumb:not(.loaded) img { position: absolute; inset: 0; height: 100%; }
.card.playable .thumb:not(.loaded) img { position: absolute; inset: 0; height: 100%; }
.thumb.loaded img { opacity: 1; }
.card:hover .thumb img { transform: scale(1.035); }
.thumb.error::before { display: none; }
.thumb.error img { display: none; }
.thumb-fallback {
  position: absolute; inset: 0; display: none; place-items: center; gap: 6px;
  color: var(--text-3); font-size: 30px; font-weight: 700;
  background: linear-gradient(140deg, rgba(124,92,255,.20), rgba(255,79,123,.14));
}
.thumb.error .thumb-fallback { display: grid; }

.card-body { padding: 11px 13px 13px; display: flex; align-items: center; gap: 8px; }
.card-title { flex: 1; min-width: 0; font-size: 14px; font-weight: 600; line-height: 1.4;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-count {
  flex: 0 0 auto; font-size: 12px; font-weight: 600; color: var(--text-2);
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 2px 9px; font-variant-numeric: tabular-nums;
}
.card-count::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--live); margin-right: 5px; vertical-align: 1px; }
.card.playable .play-badge { display: grid; }
.play-badge {
  display: none; position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%);
  width: 52px; height: 52px; border-radius: 50%; place-items: center;
  background: rgba(10,12,18,.62); border: 1px solid rgba(255,255,255,.35);
  backdrop-filter: blur(6px); color: #fff; opacity: 0; transition: opacity .2s, transform .2s;
  pointer-events: none;
}
.play-badge svg { width: 22px; height: 22px; fill: currentColor; stroke: none; }
.card:hover .play-badge, .card:focus-visible .play-badge { opacity: 1; transform: translate(-50%,-50%) scale(1.05); }
@media (hover: none) { .play-badge { opacity: .92; width: 42px; height: 42px; } }
.live-tag {
  position: absolute; top: 9px; left: 9px; display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 8px; border-radius: 7px; font-size: 10px; font-weight: 700; letter-spacing: .6px;
  color: #fff; background: rgba(255,59,92,.9); box-shadow: 0 3px 12px rgba(255,59,92,.3);
}
.live-tag::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: #fff; }

/* ---------------- state ---------------- */
.state { padding: 70px 18px; text-align: center; color: var(--text-2); }
.state[hidden] { display: none; }
.state strong { display: block; color: var(--text); font-size: 17px; margin-bottom: 8px; }
.state p { margin: 0 0 18px; font-size: 13px; }
.state button {
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  border-radius: 10px; padding: 9px 18px; cursor: pointer; font-size: 13px;
}
.state button:hover { background: var(--surface-2); }
.skeleton-grid { column-count: 5; column-gap: 18px; }
@media (max-width: 1500px) { .skeleton-grid { column-count: 4; } }
@media (max-width: 1120px) { .skeleton-grid { column-count: 3; } }
@media (max-width: 760px)  { .skeleton-grid { column-count: 2; column-gap: 14px; } }
.skeleton {
  break-inside: avoid; margin-bottom: 18px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); overflow: hidden;
}
.skeleton .ph { background: linear-gradient(100deg, var(--surface-2) 20%, rgba(255,255,255,.07) 45%, var(--surface-2) 70%);
  background-size: 220% 100%; animation: shimmer 1.5s infinite; }
.skeleton .ph.img { height: 180px; }
.skeleton .ph.line { height: 14px; margin: 14px; width: 62%; border-radius: 6px; }
.page-foot { margin-top: 16px; text-align: center; color: var(--text-3); font-size: 12px; line-height: 1.8; }
.page-foot[hidden] { display: none; }

/* ---------------- player ---------------- */
.player-layer { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: 18px; }
.player-layer[hidden] { display: none; }
.player-backdrop { position: absolute; inset: 0; background: rgba(4,6,11,.86); backdrop-filter: blur(10px); }
.player-panel {
  position: relative; width: min(1080px, 100%); max-height: 100%;
  background: #0d1018; border: 1px solid rgba(255,255,255,.12); border-radius: 18px;
  box-shadow: 0 26px 80px rgba(0,0,0,.6); overflow: hidden;
  display: flex; flex-direction: column;
  animation: pop-in .22s cubic-bezier(.2,.8,.3,1);
}
@keyframes pop-in { from { opacity: 0; transform: scale(.97) translateY(8px); } }
.player-bar { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,.08); }
.player-meta { display: flex; align-items: center; gap: 9px; min-width: 0; flex: 1; }
.player-meta strong { font-size: 15px; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player-platform { font-size: 12px; color: #8893a8; border: 1px solid rgba(255,255,255,.13); border-radius: 6px; padding: 2px 7px; white-space: nowrap; }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--live); box-shadow: 0 0 0 4px rgba(255,59,92,.16); flex: 0 0 auto; }
.player-actions { display: flex; gap: 8px; flex: 0 0 auto; }
.player-layer .icon-btn { background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.12); color: #eef2fa; }
.player-layer .icon-btn:hover { background: rgba(255,255,255,.14); }
.video-wrap { position: relative; background: #000; aspect-ratio: 16 / 9; min-height: 200px; }
.video-wrap video { width: 100%; height: 100%; display: block; object-fit: contain; background: #000; }
.player-status {
  position: absolute; inset: auto 14px 14px 14px; padding: 10px 13px; border-radius: 10px;
  background: rgba(10,12,18,.86); border: 1px solid rgba(255,255,255,.13);
  font-size: 13px; color: #dce4f2; line-height: 1.6;
}
.player-status[hidden], .buffering[hidden] { display: none; }
.buffering { position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none; }
.buffering span { width: 34px; height: 34px; border: 3px solid rgba(255,255,255,.2);
  border-top-color: #fff; border-radius: 50%; animation: spin .8s linear infinite; }
.player-foot { display: flex; align-items: center; gap: 12px; justify-content: space-between;
  padding: 11px 14px; font-size: 12px; color: #8994a8; }
.player-foot span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-btn { flex: 0 0 auto; border: 0; background: transparent; color: #9db4ff; cursor: pointer; font-size: 12px; padding: 3px 4px; }
.text-btn:hover { text-decoration: underline; }
@media (max-width: 640px) {
  .player-layer { padding: 0; align-items: stretch; }
  .player-panel { width: 100%; max-height: 100%; border-radius: 0; border: 0; touch-action: pan-y; }
  /* 手机竖屏：视频竖起来，高度按屏宽自适应，横版直播 contain 居中显示 */
  .video-wrap { aspect-ratio: auto; height: 100%; min-height: 0; touch-action: pan-y; }
  .video-wrap video { width: 100%; height: 100%; object-fit: contain; touch-action: pan-y; }
  /* 滑动提示与进度条：绝对定位在播放面板上，避开 video controls 对触摸的拦截 */
  .swipe-hint {
    position: absolute; left: 0; top: 0; bottom: 0; width: 22px; z-index: 3;
    display: flex; place-items: center; pointer-events: none;
    color: rgba(255,255,255,.55); font-size: 11px; writing-mode: vertical-rl;
    text-orientation: mixed; letter-spacing: 2px;
  }
  .swipe-hint.next { right: 0; left: auto; writing-mode: vertical-lr; }
  .anchor-progress {
    position: absolute; top: 8px; right: 8px; z-index: 3;
    font-size: 11px; color: #fff; background: rgba(0,0,0,.45);
    border-radius: 8px; padding: 3px 8px; backdrop-filter: blur(4px);
  }
  .swipe-bar {
    position: absolute; left: 0; bottom: 0; height: 3px; background: rgba(255,255,255,.5);
    width: 0; transition: width .2s ease;
  }
  .swipe-hint { display: flex; }
  .player-foot { padding: 8px 14px; }
  .player-foot span { display: none; }
}