:root{
  --bg: #0f1720;
  --panel: #0f1724;
  --muted: #9aa4b2;
  --text: #e6eef6;
  --card-radius: 12px;
  --gap: 16px;
  --accent-grad: linear-gradient(90deg,#ff416c,#ff4b2b);
  --accent: #ff4b2b;
}

body.light {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --muted: #4b5563;
  --text: #0b1220;
  --accent-grad: linear-gradient(90deg,#2563eb,#7c3aed);
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--text);
  padding:18px;
  min-height:100vh;
}

.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.brand h1{margin:0;font-size:1.2rem}
.brand .tagline{margin:0;font-size:0.8rem;color:var(--muted)}

.icon-btn{background:transparent;border:1px solid rgba(255,255,255,0.04);padding:8px;border-radius:8px;color:var(--text);cursor:pointer}
.icon-btn:hover{opacity:0.9}

.container{max-width:1100px;margin:0 auto}

.card{background:var(--panel);border-radius:var(--card-radius);padding:14px;box-shadow: 0 6px 18px rgba(2,6,23,0.6);margin-bottom:12px}
.input-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.input-row input{flex:1;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,0.04);background:rgba(255,255,255,0.02);color:var(--text)}
.actions{display:flex;gap:8px}
button.primary{background:var(--accent-grad);color:#fff;border:none;padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:600}
button.muted{background:transparent;border:1px solid rgba(255,255,255,0.04);padding:10px 12px;border-radius:10px;color:var(--muted)}
button.accent{background:linear-gradient(90deg,#10b981,#06b6d4);color:#fff;padding:8px 12px;border-radius:10px;border:none;cursor:pointer}
.hidden{display:none}
.notice{margin-top:12px;padding:10px;border-radius:10px;background:rgba(255,255,255,0.02);color:var(--muted)}

.grid{margin-top:18px;display:grid;grid-template-columns:repeat(1,1fr);gap:var(--gap);justify-items:stretch;width:100%;max-width:1100px;margin-left:auto;margin-right:auto}
@media (min-width:720px){.grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1100px){.grid{grid-template-columns:repeat(3,1fr)}}

.meta-card{border-radius:12px;overflow:hidden;display:flex;flex-direction:column;min-height:120px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));border:1px solid rgba(255,255,255,0.03)}
.meta-card .head{padding:10px 12px;display:flex;align-items:center;gap:10px;color:#fff;font-weight:700}
.meta-card .body{padding:12px;display:flex;flex-direction:column;gap:8px;color:var(--muted);font-size:0.95rem}
.h-video{background:linear-gradient(90deg,#ff7a7a,#ff4b2b)}
.h-stats{background:linear-gradient(90deg,#60a5fa,#7c3aed)}
.h-tags{background:linear-gradient(90deg,#34d399,#10b981)}
.h-channel{background:linear-gradient(90deg,#f59e0b,#f97316)}
.h-branding{background:linear-gradient(90deg,#a78bfa,#f472b6)}
.h-seo{background:linear-gradient(90deg,#f97316,#f43f5e)}
.h-embed{background:linear-gradient(90deg,#06b6d4,#3b82f6)}

.thumb-small{width:100%;max-width:240px;height:135px;object-fit:cover;border-radius:8px;border:1px solid rgba(0,0,0,0.2)}
.channel-banner{width:100%;height:80px;object-fit:cover;border-radius:8px}
.badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.badge{background:rgba(255,255,255,0.06);padding:6px 8px;border-radius:999px;font-size:0.85rem;color:var(--text);cursor:pointer}
.stat-row{display:flex;gap:8px;flex-wrap:wrap}
.stat-pill{background:rgba(0,0,0,0.2);padding:8px 10px;border-radius:10px;color:var(--text);font-weight:700}
.suggestion .ok{color:#34d399}.suggestion .warn{color:#f97316}.suggestion .bad{color:#ff6b6b}
.small{font-size:0.85rem;color:var(--muted)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.card-actions{display:flex;gap:8px;margin-top:6px}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,0.04);padding:6px 8px;border-radius:8px;color:var(--text);cursor:pointer}
.footer{margin-top:28px;text-align:center;color:var(--muted);font-size:0.85rem}

/* Toast */
#yt_toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%);min-width:220px;background:#111;color:#fff;padding:10px 14px;border-radius:8px;opacity:0;transition:opacity .25s,bottom .25s;z-index:9999}
#yt_toast.show{opacity:1;bottom:60px}