:root{
  --bg:#0f0f0f; --card:#212121; --card2:#181818; --border:#303030;
  --ink:#f1f1f1; --muted:#aaaaaa; --blue:#3ea6ff; --green:#2ba640; --live:#ff4e45;
  --hover:#272727;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:'Roboto','Segoe UI',system-ui,sans-serif;font-size:14px}
a{color:var(--blue);text-decoration:none}
/* top bar */
.topbar{height:56px;display:flex;align-items:center;gap:16px;padding:0 16px;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--bg);z-index:30}
.burger{font-size:20px;color:var(--ink);cursor:pointer}
.brand{display:flex;align-items:center;gap:9px;color:var(--ink)}
.wm{font-weight:600;font-size:19px;letter-spacing:.2px}
.wmdiv{color:#4a4a4a;font-weight:300;font-size:20px}
.wmai{font-weight:600;font-size:19px;font-style:italic;color:#fff}
.search{flex:1;max-width:560px;margin:0 auto;background:var(--card2);border:1px solid var(--border);border-radius:20px;height:36px;display:flex;align-items:center;padding:0 16px;color:var(--muted)}
.topbar .right{margin-left:auto;display:flex;gap:18px;align-items:center;color:var(--muted)}
.topbar .right form{display:inline;margin:0}
.topbar .right button{background:none;border:none;color:var(--muted);font-size:16px;cursor:pointer;padding:0}
.topbar .right button:hover{color:var(--ink)}
.avatar{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:9px;font-weight:700;letter-spacing:.3px}
/* department tabs (top bar) */
.depttabs{display:flex;gap:6px;align-items:center;margin-left:10px}
.depttab{padding:6px 14px;border-radius:18px;color:var(--muted);font-size:14px;font-weight:500;white-space:nowrap}
.depttab:hover{background:var(--hover);color:var(--ink)}
.depttab.on{background:#263850;color:#fff}
/* per-department display pictures (shared by topbar avatar + sidebar pic) */
.dp-ai{background:linear-gradient(135deg,#3ea6ff,#7c3aed)}
.dp-cgi{background:linear-gradient(135deg,#f59e0b,#ef4444)}
/* layout */
.app{display:flex}
.side{width:240px;flex-shrink:0;border-right:1px solid var(--border);min-height:calc(100vh - 56px);padding:12px 0;position:sticky;top:56px;height:calc(100vh - 56px);overflow-y:auto}
.chan{display:flex;flex-direction:column;align-items:center;text-align:center;padding:18px 10px 16px}
.chan .pic{width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:20px;letter-spacing:.5px;margin-bottom:10px}
.chan b{font-weight:500;display:block;margin-bottom:2px}
.nav a{display:flex;align-items:center;gap:24px;padding:11px 24px;color:var(--ink);font-size:14px;cursor:pointer}
.nav a .ic{width:20px;text-align:center;color:var(--muted)}
.nav a:hover{background:var(--hover)}
.nav a.on{background:#263850;color:#fff;font-weight:500}
.nav a.on .ic{color:var(--blue)}
.nav .sep{border-top:1px solid var(--border);margin:8px 0}
/* main */
.main{flex:1;min-width:0;padding:20px 40px;max-width:1300px}
h1.title{font-size:24px;font-weight:400;margin:0 0 18px}
.pills{display:flex;gap:10px;margin-bottom:18px;flex-wrap:wrap}
.pill{border:1px solid var(--border);border-radius:18px;padding:7px 14px;font-size:13px;color:var(--ink);cursor:pointer;display:flex;align-items:center;gap:8px}
.pill:hover{background:var(--hover)}
.tabsrow{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);margin-bottom:8px}
.tabs{display:flex;gap:26px}
.tab{padding:12px 2px;color:var(--muted);cursor:pointer;font-size:15px;border-bottom:2px solid transparent;margin-bottom:-1px}
.tab.on{color:var(--ink);border-color:var(--ink)}
.range{color:var(--muted);font-size:13px;text-align:right}
.range b{color:var(--ink);font-weight:400;display:block}
/* content grid */
.grid{display:grid;grid-template-columns:1fr 320px;gap:24px;margin-top:18px}
.headline{text-align:center;font-size:22px;font-weight:400;margin:6px 0 18px}
.bigcard{background:var(--card);border-radius:12px;padding:0 0 18px}
.metricrow{display:flex;border-bottom:1px solid var(--border)}
.metric{flex:1;padding:18px 20px;cursor:pointer;border-right:1px solid var(--border);border-top:3px solid transparent}
.metric:last-child{border-right:none}
.metric.on{border-top-color:var(--blue);background:#1a1a1a}
.metric .ml{color:var(--muted);font-size:13px}
.metric .mv{font-size:26px;font-weight:400;margin:6px 0 4px}
.metric .md{color:var(--muted);font-size:12px}
.metric .md.up{color:var(--green)}
.chartwrap{height:300px;padding:20px 18px 6px}
.legend{display:flex;gap:18px;padding:0 22px;font-size:12px;color:var(--muted);align-items:center}
.legend .k{display:flex;align-items:center;gap:6px}
.legend .sw{width:14px;height:3px;border-radius:2px;display:inline-block}
/* recent-gain rail */
.rt{background:var(--card);border-radius:12px;padding:16px 18px}
.rt h3{margin:0 0 2px;font-size:15px;font-weight:500}
.rt .live{color:var(--muted);font-size:12px;display:flex;align-items:center;gap:6px;margin-bottom:14px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--live);display:inline-block;animation:blink 1.4s infinite}
@keyframes blink{50%{opacity:.35}}
.rt .big{font-size:30px;font-weight:400}
.rt .sm{color:var(--muted);font-size:12px;margin-bottom:14px}
.rt .bars{display:flex;align-items:flex-end;gap:3px;height:46px;margin:4px 0 4px}
.rt .bars i{flex:1;background:#3a3a3a;border-radius:1px}
.rt .bars i.hi{background:var(--blue)}
.rt .axis{display:flex;justify-content:space-between;color:#777;font-size:11px;border-top:1px solid var(--border);padding-top:6px}
.rt .toplbl{color:var(--muted);font-size:12px;margin:16px 0 10px;border-top:1px solid var(--border);padding-top:14px}
.rt .titem{display:flex;gap:10px;align-items:center;margin-bottom:10px;font-size:12px}
.rt .titem .th{width:48px;height:28px;border-radius:4px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:11px;background-size:cover;background-position:center}
.rt .titem .nm{flex:1;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rt .titem .vw{color:var(--muted)}
/* section */
.sec{margin-top:34px}
.sec h2{font-size:16px;font-weight:500;margin:0 0 4px}
.sec .hint{color:var(--muted);font-size:12px;margin-bottom:16px}
/* insight bars */
.insight{display:grid;grid-template-columns:1fr 1fr;gap:30px;background:var(--card);border-radius:12px;padding:20px 24px}
.ititle{font-size:12px;color:var(--muted);margin-bottom:12px;letter-spacing:.3px}
.bar-row{display:flex;align-items:center;gap:10px;margin-bottom:13px;font-size:13px}
.bar-row .bl{width:84px;color:var(--ink)}
.bar-track{flex:1;background:#2a2a2a;border-radius:5px;height:20px;overflow:hidden}
/* Fixed: solid blue instead of the muddy blue->purple gradient (matches the
   rest of the YT-Studio UI — velocity bars and sort markers are solid blue). */
.bar-fill{height:100%;background:var(--blue);border-radius:5px}
.bar-row .bv{width:58px;text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}
/* leaderboard table */
.tcard{background:var(--card);border-radius:12px;overflow:hidden;margin-top:6px}
table{width:100%;border-collapse:collapse}
thead th{text-align:left;color:var(--muted);font-size:12px;font-weight:400;padding:12px 16px;border-bottom:1px solid var(--border);cursor:pointer;white-space:nowrap}
thead th.r{text-align:right}
tbody td{padding:11px 16px;border-bottom:1px solid var(--border);vertical-align:middle}
tbody tr{cursor:pointer}
tbody tr:hover td{background:var(--hover)}
.idx{color:var(--muted);width:24px}
/* thumbnail blocks: letter shows by default; the cached <img> overlays it and
   removes itself (onerror) if the image is missing, revealing the letter. */
.th{position:relative;overflow:hidden}
.th img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.vc{display:flex;gap:12px;align-items:center}
.vc .th{width:64px;height:38px;border-radius:5px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;background-size:cover;background-position:center}
.vc b{font-weight:400;font-size:14px;display:block;line-height:1.25}
.vc small{color:var(--muted)}
.tg{display:inline-block;background:#2a2a2a;color:#bbb;font-size:11px;padding:1px 7px;border-radius:9px;margin-right:4px;margin-top:4px}
.tg.h{background:#1e3a5f;color:#8fc2ff}
.tg.stale{background:#4a3a1e;color:#ffce8f}
td.r{text-align:right;font-variant-numeric:tabular-nums}
.rowdel{background:none;border:none;color:#666;cursor:pointer;font-size:14px;padding:2px 6px;border-radius:6px;line-height:1}
.rowdel:hover{color:#ff8f8f;background:#3a1e1e}
.badge{display:inline-block;font-size:10px;padding:1px 6px;border-radius:4px;background:#333;color:#bbb;vertical-align:middle}
.badge.ig{background:#3a1e3f;color:#e58fff}
.badge.yt{background:#4a1e1e;color:#ff8f8f}
/* video drill view */
.backlink{color:var(--muted);font-size:13px;cursor:pointer;margin-bottom:10px;display:inline-flex;gap:8px;align-items:center}
.vhead{display:flex;gap:14px;align-items:center;margin-bottom:6px}
.vhead .th{width:90px;height:54px;border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px;background-size:cover;background-position:center}
/* forms */
.form{background:var(--card);border-radius:12px;padding:24px;max-width:560px}
.form label{display:block;color:var(--muted);font-size:13px;margin:14px 0 6px}
.form input,.form select{width:100%;background:var(--card2);border:1px solid var(--border);border-radius:8px;color:var(--ink);font-size:14px;padding:10px 12px}
.form .btn{margin-top:20px}
.btn{background:var(--blue);color:#0a0a0a;border:none;border-radius:18px;padding:9px 18px;font-size:14px;font-weight:500;cursor:pointer}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:none;border:1px solid var(--border);color:var(--ink)}
.btn.danger{background:none;border:1px solid #5a2a2a;color:#ff8f8f}
.flash{background:#3a1e1e;border:1px solid #5a2a2a;color:#ffb4b4;border-radius:8px;padding:10px 14px;margin-bottom:16px;font-size:13px}
.flash.ok{background:#1e3a24;border-color:#2a5a34;color:#b4ffc4}
.empty{background:var(--card);border-radius:12px;padding:48px 24px;text-align:center;color:var(--muted)}
.empty b{color:var(--ink);display:block;font-size:18px;margin-bottom:8px;font-weight:500}
/* login */
.login{max-width:340px;margin:14vh auto 0;background:var(--card);border-radius:12px;padding:28px}
.login h1{font-size:20px;font-weight:500;margin:0 0 4px}
.login p{color:var(--muted);font-size:13px;margin:0 0 18px}
@media(max-width:1080px){
  .side{display:none}
  .grid{grid-template-columns:1fr}
  .main{padding:16px 20px}
}
@media(max-width:640px){
  .search{display:none}
  .topbar{gap:10px;padding:0 12px}
  .main{padding:14px 14px}
  h1.title{font-size:20px}
  .headline{font-size:17px;line-height:1.35}
  .tabsrow{flex-direction:column;align-items:flex-start;gap:6px}
  .range{text-align:left}
  .tabs{gap:18px;overflow-x:auto;width:100%;-webkit-overflow-scrolling:touch}
  .tab{white-space:nowrap}
  .metricrow{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .metric{min-width:42%;padding:14px 16px}
  .metric .mv{font-size:22px}
  .chartwrap{height:240px;padding:14px 10px 6px}
  .insight{grid-template-columns:1fr;gap:18px;padding:16px}
  .tcard{overflow-x:auto}
  table{min-width:520px}
  .vc .th{width:52px;height:32px}
  .vc b{font-size:13px}
  .vhead .th{width:64px;height:40px;font-size:15px}
}