/* youtube.css — the YouTube shelf and the /videos channel page. Tokens come from world.css. */
.yt{padding-block:clamp(40px,5vw,72px)}
.yt-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:clamp(20px,3vw,36px)}
.yt-head .sec-head{margin-bottom:0}
button.yt-card,.yt-tabs button,.yt-x{font:inherit;color:inherit}

/* YouTube red is the brand mark; white text on it keeps contrast. */
.yt-sub,.yt-follow{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:44px;padding-inline:22px;border-radius:999px;
  font-weight:700;font-size:15px;text-decoration:none;transition:background .2s,transform .2s}
.yt-sub{background:#C4161C;color:#fff}
.yt-sub:hover{background:#9E1116;transform:translateY(-2px)}
.yt-follow{background:#16181D;color:#fff}
.yt-follow:hover{background:#2B2F38;transform:translateY(-2px)}
.yt-sub--lg{min-height:56px;padding-inline:30px;font-size:16px}
.yt-sub:focus-visible,.yt-follow:focus-visible,.yt-facade:focus-visible,.yt-card:focus-visible,.yt-tabs button:focus-visible,.yt-x:focus-visible,.yt-all:focus-visible{outline:3px solid var(--focus);outline-offset:3px}

/* featured player (home) */
.yt-player{position:relative;aspect-ratio:16/9;max-width:860px;margin-inline:auto;border-radius:16px;overflow:hidden;background:#000;border:1px solid var(--rule)}
.yt-player iframe,.yt-facade{position:absolute;inset:0;width:100%;height:100%;border:0}
.yt-facade{padding:0;cursor:pointer;background:#000;display:block}
.yt-facade img{width:100%;height:100%;object-fit:cover;display:block;opacity:.92;transition:opacity .2s}
.yt-facade:hover img{opacity:1}
.yt-play{position:absolute;inset:0;margin:auto;width:76px;height:76px;border-radius:50%;display:grid;place-items:center;background:#C4161C;color:#fff;box-shadow:0 8px 28px rgba(0,0,0,.35)}
html[dir="rtl"] .yt-play svg{transform:scaleX(-1)}
.yt-cap{position:absolute;inset-inline:0;bottom:0;padding:36px 20px 16px;color:#fff;text-align:start;font-weight:700;font-size:clamp(14px,1.8vw,18px);line-height:1.4;background:linear-gradient(transparent,rgba(0,0,0,.75))}
.yt-latest{margin:clamp(28px,3.6vw,44px) 0 14px;font-family:var(--display);font-size:clamp(16px,1.6vw,19px);color:var(--ink)}

/* cards */
.yt-card{display:block;width:100%;padding:0;border:0;background:none;text-align:start;cursor:pointer;transition:transform .2s}
.yt-card:hover{transform:translateY(-4px)}
.yt-thumb{position:relative;display:block;aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:var(--panel)}
.yt-thumb img{display:block;width:100%;height:100%;object-fit:cover}
.yt-card--tall .yt-thumb{aspect-ratio:9/16}
.yt-over{position:absolute;inset-inline:0;bottom:0;padding:40px 12px 12px;color:#fff;font-weight:700;font-size:14px;line-height:1.4;background:linear-gradient(transparent,rgba(0,0,0,.8));
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.yt-badge{position:absolute;top:8px;inset-inline-start:8px;display:inline-flex;align-items:center;gap:4px;padding:3px 9px;border-radius:999px;background:rgba(0,0,0,.72);color:#fff;font-size:12px;font-weight:700}
.yt-badge svg{width:13px;height:13px}
.yt-meta{display:block;padding:10px 2px 0}
.yt-title{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:15px;line-height:1.45;font-weight:700;color:var(--ink)}
.yt-when{display:block;margin-top:4px;font-size:13px;color:var(--ink-soft)}

.yt-vgrid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:28px clamp(12px,1.6vw,20px)}
.yt-vgrid--tall{grid-template-columns:repeat(5,1fr)}
.yt-vgrid--shelf{max-width:none}
.yt-rail{list-style:none;padding:0 0 8px;margin:0;display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x proximity}
.yt-rail li{flex:0 0 clamp(140px,16vw,180px);scroll-snap-align:start}

.yt-foot{display:flex;flex-direction:column;align-items:center;gap:14px;margin-top:clamp(28px,3vw,44px)}
.yt-all{font-weight:700;color:var(--teal);text-decoration:underline;text-underline-offset:4px}
.yt-all:hover{color:var(--teal-bright)}
.yt-visit{font-size:14px;font-weight:600;color:var(--ink-soft);text-decoration:none}
.yt-visit:hover{color:var(--teal)}

/* channel page */
.yt-page{padding-block:clamp(28px,4vw,56px) clamp(48px,6vw,88px)}
.yt-channel{display:flex;align-items:center;gap:clamp(16px,3vw,32px);padding-bottom:clamp(20px,3vw,32px)}
.yt-avatar{flex:none;width:clamp(72px,11vw,128px);height:clamp(72px,11vw,128px);border-radius:50%;object-fit:cover;background:var(--panel);border:1px solid var(--rule)}
.yt-id h1{font-family:var(--display);font-size:clamp(24px,3.4vw,36px);line-height:1.2;color:var(--ink)}
.yt-handle{margin-top:4px;font-size:14px;color:var(--ink-soft);text-align:start}
html[dir="rtl"] .yt-handle{direction:ltr;text-align:right}
.yt-about{margin-top:8px;max-width:60ch;font-size:15px;line-height:1.6;color:var(--ink-soft)}
.yt-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.yt-tabs{display:flex;gap:4px;border-bottom:1px solid var(--rule);margin-bottom:clamp(20px,3vw,32px)}
.yt-tabs button{background:none;border:0;padding:12px 20px;font-size:15px;font-weight:700;color:var(--ink-soft);cursor:pointer;border-bottom:3px solid transparent;margin-bottom:-1px}
.yt-tabs button:hover{color:var(--ink)}
.yt-tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.yt-empty{padding:48px 0;text-align:center;color:var(--ink-soft)}

/* watch modal */
.yt-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:16px;background:rgba(0,0,0,.78);overflow-y:auto}
.yt-watch{position:relative;width:min(960px,100%);background:var(--surface);border-radius:16px;overflow:hidden}
.yt-watch--tall{width:min(420px,100%)}
.yt-x{position:absolute;top:10px;inset-inline-end:10px;z-index:2;width:40px;height:40px;border-radius:50%;border:0;background:rgba(0,0,0,.65);color:#fff;display:grid;place-items:center;cursor:pointer}
.yt-ratio{position:relative;background:#000}
.yt-ratio--wide{aspect-ratio:16/9}
.yt-ratio--tall{aspect-ratio:9/16;max-height:72vh;margin-inline:auto}
.yt-ratio iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.yt-watch-info{padding:16px 20px 20px}
.yt-watch-info h2{font-size:clamp(16px,2vw,20px);line-height:1.45;color:var(--ink);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.yt-watch-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:14px}

@media(max-width:1000px){.yt-vgrid{grid-template-columns:repeat(2,1fr)}.yt-vgrid--tall{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){
  .yt-head{flex-direction:column;align-items:stretch}
  .yt-head .yt-sub{width:100%}
  .yt-vgrid{grid-template-columns:1fr}
  .yt-vgrid--tall{grid-template-columns:repeat(2,1fr)}
  .yt-vgrid--shelf{grid-template-columns:1fr}
  .yt-play{width:60px;height:60px}
  .yt-channel{align-items:flex-start}
  .yt-watch--tall{width:min(340px,100%)}
}
@media(prefers-reduced-motion:reduce){.yt-sub,.yt-follow,.yt-card{transition:none}.yt-sub:hover,.yt-follow:hover,.yt-card:hover{transform:none}}