:root{
  --bg:#0b0b0d; --fg:#e7e7ea; --muted:#9aa3a7; --card:#141417; --chip:#1b1b20;
  --accent:#3ea6ff; --accent2:#78f0c4;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:linear-gradient(180deg,#060607,#0b0b0d);color:var(--fg);font-family:Inter,system-ui,Segoe UI,Roboto,Arial}
.topbar{display:flex;align-items:center;gap:16px;padding:12px 16px;background:#0f0f12;border-bottom:1px solid #1f1f26;position:sticky;top:0;z-index:5}
.topbar .brand{display:flex;align-items:center;gap:12px}
.topbar img{width:28px;height:28px;border-radius:8px}
.topbar h1{font-size:18px;margin:0;font-weight:700}
.accent{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.status{margin-left:auto;color:var(--muted);font-size:13px}
main{padding:16px;max-width:1200px;margin:0 auto}
.card{background:var(--card);border:1px solid #1f1f26;border-radius:16px;padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.mt{margin-top:12px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr auto;gap:12px}
.end{display:flex;align-items:end;justify-content:end}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
input{width:100%;padding:10px 12px;border-radius:12px;border:1px solid #2a2a33;background:#111117;color:var(--fg)}
.btn{padding:10px 14px;border:1px solid #2a2a33;border-radius:12px;background:linear-gradient(90deg,#1f2937,#111827);color:#fff;cursor:pointer}
.btn:hover{filter:brightness(1.1)}
.hidden{display:none}
.tabs{display:flex;gap:8px;align-items:center;margin:16px 0}
.tab{padding:8px 12px;border-radius:999px;border:1px solid #2a2a33;background:#111117;color:#cbd5e1;cursor:pointer}
.tab.active{background:linear-gradient(90deg,#1f2937,#0f172a);border-color:#334155}
.search{max-width:280px}
.content-area{display:grid;grid-template-columns:240px 1fr;gap:16px}
.side{background:var(--card);border:1px solid #1f1f26;border-radius:16px;padding:12px;height:420px;overflow:auto}
.side h3{margin:6px 8px 8px 8px;font-size:14px;color:#cbd5e1}
#cats .cat{padding:8px 10px;border-radius:10px;margin:6px;background:var(--chip);cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#cats .cat.active{outline:2px solid var(--accent)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;min-height:420px}
.cardItem{border-radius:14px;overflow:hidden;border:1px solid #242430;background:#111117;cursor:pointer}
.cardItem img{width:100%;height:180px;object-fit:cover;background:#0b0b0d}
.cardItem .meta{padding:8px}
.cardItem h4{font-size:13px;margin:0 0 4px 0}
.cardItem .sub{font-size:12px;color:var(--muted);margin:0}
.player{margin-top:16px;display:grid;grid-template-columns:1fr;gap:8px}
video{width:100%;height:420px;background:#000;border-radius:12px;border:1px solid #1f1f26}
.foot{padding:20px 16px;color:var(--muted);text-align:center}
@media (max-width:900px){
  .content-area{grid-template-columns:1fr}
  .side{height:auto}
  video{height:260px}
}