:root{--bg:#0b1114;--surface:#151d20;--border:#2a3436;--ink:#f1f6f2;--muted:#8a9c9a;--accent:#93c5a7;--radius:16px}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{background:var(--bg)}
body{font:14px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;margin:0;min-height:100dvh;color:var(--ink);background:radial-gradient(ellipse 50% 40% at 60% -15%,#1e3730 0%,transparent 85%),var(--bg)}
a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}
button:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
.topbar{height:68px;display:flex;align-items:center;justify-content:space-between;max-width:1600px;margin:auto;padding:0 clamp(18px,4vw,55px);border-bottom:1px solid #ffffff12}
.brand{display:flex;align-items:center;gap:11px;font-weight:750;font-size:18px;letter-spacing:-.6px}.brand-icon{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;background:#20392f;border:1px solid #3e5f4e}.brand-icon span{width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:10px solid var(--accent);margin-left:2px}
.top-label{font-size:10px;letter-spacing:2.5px;color:var(--muted);font-weight:750}
.layout{max-width:1600px;margin:0 auto;padding:clamp(18px,3.5vw,48px) clamp(16px,4vw,55px) 48px;display:grid;grid-template-columns:minmax(0,1fr);gap:26px}
.layout:has(.library:not([hidden])){grid-template-columns:minmax(0,1fr) 280px}
.player-section{min-width:0}
.player-frame{aspect-ratio:16 / 9;overflow:hidden;position:relative;border:1px solid #33433c;background:#050809;border-radius:var(--radius);box-shadow:0 30px 90px #0006}
.player-frame video{display:block;width:100%;height:100%;object-fit:contain;position:absolute;inset:0;background:#000;opacity:0;transition:opacity .18s}
.player-frame video.loaded{opacity:1}
.player-placeholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:radial-gradient(circle at center,#172923,#080b0d 70%);color:var(--muted);text-align:center;padding:20px}
.placeholder-icon{width:76px;height:76px;border-radius:50%;border:1px solid #49715b;background:#29463757;display:grid;place-items:center;color:var(--accent);font-size:22px;padding-left:5px}
.player-placeholder p{margin:0;font-size:12px}
.player-details{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:25px}
.overline{color:var(--accent);letter-spacing:2px;font-weight:800;font-size:9px;margin:0 0 7px}
h1{font-size:clamp(20px,3vw,34px);letter-spacing:-.8px;line-height:1.25;font-weight:650;margin:0}
.video-info{color:var(--muted);font-size:12px;margin:8px 0 0}
.copy-button{display:inline-flex;flex:none;align-items:center;gap:8px;color:#baccc1;background:#1a2924;border:1px solid #365045;border-radius:9px;padding:10px 13px}.copy-button:hover{background:#244032}
.library{min-width:0}.library-heading{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;font-weight:650;letter-spacing:.3px;margin:5px 0 17px}
.video-list{display:grid;gap:9px}
.video-item{width:100%;text-align:left;display:flex;align-items:center;gap:13px;padding:11px;background:#141d20;border:1px solid #2a3637;border-radius:12px;color:var(--ink)}.video-item:hover{background:#20302c}.video-item.active{border-color:#5b9374;background:#20332a}
.video-thumb{flex:none;display:grid;place-items:center;width:49px;aspect-ratio:16/10;background:#283b33;color:var(--accent);font-size:14px;border-radius:6px}.video-name{font-size:12px;font-weight:650;min-width:0;overflow-wrap:anywhere}
.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,18px);opacity:0;pointer-events:none;background:#274b38;border:1px solid #406c51;color:#fff;padding:10px 16px;border-radius:9px;transition:.2s;font-size:12px}.toast.visible{opacity:1;transform:translate(-50%,0)}
@media(max-width:1050px){.layout:has(.library:not([hidden])){grid-template-columns:1fr}.library{border-top:1px solid var(--border);padding-top:25px}.video-list{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}}
@media(max-width:600px){.topbar{height:58px}.top-label{font-size:9px}.player-frame{border-radius:10px}.placeholder-icon{width:53px;height:53px;font-size:18px}.player-details{margin-top:18px}.copy-button{padding:9px 10px}.copy-button span{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}