/* ====== YouTube 2013 Mock — CSS ====== */
:root{
  --yt-red:#cc181e;
  --yt-dark:#222;
  --yt-mid:#555;
  --yt-light:#777;
  --yt-border:#dcdcdc;
  --yt-bg:#f1f1f1;
  --yt-card:#fff;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font:14px/1.4 Arial, Helvetica, sans-serif;
  background:var(--yt-bg);
  color:#111;
}

/* Top bar */
.yt-topbar{background:#fff;border-bottom:1px solid var(--yt-border)}
.yt-topbar-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:10px}
.yt-logo{font-weight:700;font-size:22px;text-decoration:none;color:#111}
.yt-logo span{background:var(--yt-red);color:#fff;padding:2px 5px;border-radius:2px;margin-left:3px}
.yt-search{flex:1;display:flex;gap:0}
.yt-search-input{flex:1;padding:8px 10px;border:1px solid var(--yt-border);border-right:none;border-radius:2px 0 0 2px}
.yt-search-btn{padding:8px 14px;border:1px solid var(--yt-border);background:#f8f8f8;border-radius:0 2px 2px 0;cursor:pointer}
.yt-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.yt-upload{padding:7px 12px;border:1px solid var(--yt-border);background:#fff;cursor:pointer;border-radius:2px}

/* Layout */
.yt-page{max-width:1200px;margin:14px auto;display:grid;grid-template-columns:240px 1fr;gap:14px}
.yt-sidebar{display:flex;flex-direction:column;gap:14px}
.yt-navgroup{background:#fff;border:1px solid var(--yt-border);border-radius:2px;overflow:hidden}
.yt-navitem{display:block;color:#111;text-decoration:none;padding:10px 12px;border-top:1px solid var(--yt-border)}
.yt-navitem:first-child{border-top:none}
.yt-navitem:hover{background:#f8f8f8}
.yt-navitem.is-active{background:#e6e6e6;font-weight:700}

.yt-card{background:var(--yt-card);border:1px solid var(--yt-border);border-radius:2px;padding:12px}
.yt-card-title{margin:0 0 8px 0;font-size:16px}
.yt-intro-row{margin:4px 0;color:#333}
.yt-intro-desc{margin-top:8px;color:#444}

/* Main */
.yt-main{display:grid;grid-template-columns:1fr 360px;gap:14px}
.yt-player-card{grid-column:1/span 1}

/* Player */
.yt-player{position:relative;background:#000;border:1px solid var(--yt-border);border-radius:2px;aspect-ratio:16/9;overflow:hidden}
.yt-player-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:56px;color:#fff;cursor:pointer;user-select:none}
.yt-player-overlay::after{content:"";position:absolute;inset:auto auto 14px 14px;background:rgba(255,255,255,.1);padding:4px 6px;font-size:12px;border-radius:2px}
.yt-player-watermark{position:absolute;right:8px;bottom:8px;font-size:10px;color:#fff;opacity:.5;letter-spacing:.8px}

/* Title & Meta */
.yt-title{margin:10px 0 6px 0;font-size:20px}
.yt-meta{display:flex;justify-content:space-between;gap:10px}
.yt-channel{display:flex;gap:10px;align-items:center}
.yt-avatar{width:36px;height:36px;border-radius:50%;background:#ddd;display:flex;align-items:center;justify-content:center;font-weight:700}
.yt-channel-name{font-weight:700}
.yt-sub{margin-top:2px;padding:6px 10px;background:var(--yt-red);color:#fff;border:none;border-radius:2px;cursor:pointer}
.yt-sub[aria-pressed="true"]{background:#aaa}
.yt-stats{display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.yt-actions-row{display:flex;gap:8px}
.yt-btn{padding:6px 10px;background:#f8f8f8;border:1px solid var(--yt-border);border-radius:2px;cursor:pointer}
.yt-btn[aria-pressed="true"]{background:#e6e6e6}

/* Description */
.yt-description{margin-top:8px;border-top:1px solid var(--yt-border);padding-top:8px}
.yt-pub{color:var(--yt-light);font-size:12px;margin-bottom:6px}
.yt-description-text{max-height:54px;overflow:hidden}
.yt-description-text.is-open{max-height:none}
.yt-showmore{margin-top:6px;padding:6px 10px;border:1px solid var(--yt-border);background:#fff;border-radius:2px;cursor:pointer}

/* Suggestions */
.yt-suggestions{grid-column:2/span 1;display:flex;flex-direction:column;gap:10px}
.yt-suggest{display:grid;grid-template-columns:168px 1fr;gap:8px;border:1px solid var(--yt-border);background:#fff;border-radius:2px;overflow:hidden;cursor:pointer}
.yt-thumb{background:#000;aspect-ratio:16/9;position:relative}
.yt-duration{position:absolute;right:4px;bottom:4px;background:rgba(0,0,0,.7);color:#fff;font-size:11px;padding:2px 4px;border-radius:2px}
.yt-suggest-title{margin:8px 8px 4px 0;font-weight:700}
.yt-suggest-meta{color:#555;font-size:12px;margin:0 8px 8px 0}

/* Footer */
.yt-footer{margin-top:20px;border-top:1px solid var(--yt-border);background:#fff}
.yt-footer-inner{max-width:1200px;margin:0 auto;padding:12px;display:flex;gap:10px;flex-wrap:wrap;color:#666}
.yt-footer-inner a{color:#555;text-decoration:none}
.yt-footer-inner a:hover{text-decoration:underline}

/* Small screens */
@media (max-width: 1000px){
  .yt-main{grid-template-columns:1fr}
  .yt-suggestions{grid-column:1/span 1}