/* Palette: reference categorical slots 1 (blue) and 2 (orange); status colours reserved for state. */
:root{
  color-scheme:dark;
  --bg:#0a0b10;--glass:rgba(24,27,38,.62);--glass-b:rgba(255,255,255,.08);--line:rgba(255,255,255,.08);
  --text:#f0efec;--text2:#c3c2b7;--muted:#8d90a0;
  --s1:#3987e5;--s2:#d95926;--accent:#3987e5;--accent2:#7c5cff;
  --ok:#2fd08a;--warn:#f1b44c;--bad:#f46a6a;
  --shadow:0 10px 40px rgba(0,0,0,.35);
}
@media (prefers-color-scheme:light){
  :root{color-scheme:light;--bg:#eef0f6;--glass:rgba(255,255,255,.72);--glass-b:rgba(0,0,0,.07);--line:rgba(0,0,0,.08);
    --text:#0b0b0b;--text2:#52514e;--muted:#6b6f80;--s1:#2a78d6;--s2:#eb6834;--ok:#0f9d62;--warn:#b7791f;--bad:#d64545;--shadow:0 10px 30px rgba(20,30,60,.12)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:14px/1.5 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}
.hidden{display:none!important}
.aurora{position:fixed;inset:0;z-index:-1;overflow:hidden;
  background:radial-gradient(60vw 50vh at 12% -5%,rgba(57,135,229,.28),transparent 70%),
             radial-gradient(50vw 45vh at 95% 10%,rgba(124,92,255,.22),transparent 70%),
             radial-gradient(45vw 40vh at 50% 110%,rgba(217,89,38,.14),transparent 70%)}
.glass{background:var(--glass);border:1px solid var(--glass-b);border-radius:16px;box-shadow:var(--shadow);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%)}
.muted{color:var(--muted)}
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;gap:10px;align-items:center}.row.end{justify-content:flex-end}.row.rev{flex-direction:row-reverse}
h1{margin:0;font-size:22px;letter-spacing:-.01em}
h2{margin:0;font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
h3{margin:0;font-size:17px}
.i{width:16px;height:16px;flex:none}

/* top bar */
.topbar{position:sticky;top:12px;margin:12px auto 0;max-width:1120px;width:calc(100% - 24px);z-index:5;display:flex;align-items:center;gap:14px;padding:8px 12px;border-radius:14px}
.brand{display:flex;align-items:center;gap:9px;min-width:0}
.brand strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dot{width:9px;height:9px;border-radius:50%;background:var(--muted);flex:none}
.dot.live{background:var(--ok);box-shadow:0 0 0 0 rgba(47,208,138,.6);animation:pulse 2s infinite}
.dot.off{background:var(--bad);animation:none}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(47,208,138,0)}100%{box-shadow:0 0 0 0 rgba(47,208,138,0)}}
.tabs{display:flex;gap:4px;flex:1;justify-content:center}
.tabs a{display:flex;align-items:center;gap:7px;padding:7px 12px;border-radius:10px;color:var(--text2);text-decoration:none;transition:.15s}
.tabs a:hover{background:var(--line)}
.tabs a.on{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}

main{max-width:1120px;margin:0 auto;padding:18px 12px 80px}
section{display:flex;flex-direction:column;gap:14px;animation:fade .25s ease}
@keyframes fade{from{opacity:0;transform:translateY(6px)}}
.pad{padding:4px 4px 0}

/* gauges */
.gauges{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.gauge,.tile{position:relative;padding:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:170px}
.ring{width:112px;height:112px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:8;stroke-linecap:round}
.ring .trk{stroke:var(--line)}
.ring .val{stroke:var(--ok);stroke-dasharray:263.9;stroke-dashoffset:263.9;transition:stroke-dashoffset .8s cubic-bezier(.2,.8,.2,1),stroke .4s;filter:drop-shadow(0 0 6px currentColor)}
.gv{position:absolute;top:16px;left:0;right:0;height:112px;display:flex;flex-direction:column;align-items:center;justify-content:center}
.gv b{font-size:26px;font-variant-numeric:tabular-nums}
small{color:var(--muted);font-size:12px}
.gs{margin-top:8px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.tile{align-items:flex-start;gap:4px}
.tile b{font-size:30px;font-variant-numeric:tabular-nums;background:linear-gradient(135deg,var(--text),var(--text2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* panels / charts */
.panel{padding:16px}
.panel-h{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.legend{display:flex;gap:14px;color:var(--text2);font-size:12px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.chart{position:relative;height:190px}
.chart svg{width:100%;height:100%;display:block;overflow:visible}
.chart .grid{stroke:var(--line);stroke-width:1}
.chart .axis{fill:var(--muted);font-size:10px}
.chart path.ln{fill:none;stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.chart .cross{stroke:var(--muted);stroke-dasharray:3 3}
.chart .pt{stroke:var(--bg);stroke-width:2}
.tip{position:absolute;pointer-events:none;background:var(--bg);border:1px solid var(--glass-b);border-radius:10px;padding:7px 10px;font-size:12px;box-shadow:var(--shadow);white-space:nowrap;transform:translate(-50%,-110%);z-index:2}
.tip b{display:block;color:var(--muted);font-weight:500;margin-bottom:2px}
.tip span{display:flex;gap:8px;align-items:center;font-variant-numeric:tabular-nums}
.tip i{width:8px;height:8px;border-radius:50%}

/* tables */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
th{font-size:12px;color:var(--muted);font-weight:600}
tr:last-child td{border-bottom:0}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font:inherit;font-weight:550;cursor:pointer;border:1px solid var(--glass-b);background:var(--line);color:var(--text);border-radius:11px;padding:9px 14px;transition:.15s;min-height:38px}
.btn:hover{transform:translateY(-1px);border-color:var(--accent)}
.btn:active{transform:none}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent;color:#fff}
.btn.primary:hover{filter:brightness(1.1)}
.btn.ghost{background:transparent}
.btn.sm{padding:5px 11px;min-height:32px;font-size:13px}
.btn.good:hover{border-color:var(--ok);color:var(--ok)}
.btn.warn:hover{border-color:var(--warn);color:var(--warn)}
.btn.danger:hover{border-color:var(--bad);color:var(--bad)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn.busy{pointer-events:none;opacity:.7}
.btn.busy .i{animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:14px}
.card{padding:16px;display:flex;flex-direction:column;gap:12px;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--muted);opacity:.5}
.card.ok::before{background:var(--ok)}.card.warn::before{background:var(--warn)}.card.bad::before{background:var(--bad)}
.card .t{display:flex;align-items:center;justify-content:space-between;gap:10px}
.card .t strong{font-size:16px;overflow:hidden;text-overflow:ellipsis}
.card .img{color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.kv{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.kv div{background:var(--line);border-radius:10px;padding:8px 10px}
.kv small{display:block}.kv b{font-variant-numeric:tabular-nums}
.btns{display:flex;gap:8px;flex-wrap:wrap}
.pill{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600;background:var(--line);color:var(--text2)}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.pill.ok{background:color-mix(in srgb,var(--ok) 18%,transparent);color:var(--ok)}
.pill.warn{background:color-mix(in srgb,var(--warn) 18%,transparent);color:var(--warn)}
.pill.bad{background:color-mix(in srgb,var(--bad) 18%,transparent);color:var(--bad)}

/* security */
.sec{display:flex;flex-direction:column;gap:12px}
.sec ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.sec li{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--line);border-radius:10px;padding:8px 10px}
.qr{background:#fff;border-radius:12px;padding:8px;width:200px;height:200px;align-self:center}
.qr img{width:100%;height:100%;display:block}
code.sec-key{word-break:break-all;background:var(--line);padding:6px 8px;border-radius:8px;font-size:12px}
.codes{display:grid;grid-template-columns:1fr 1fr;gap:6px;font:13px ui-monospace,Menlo,Consolas,monospace}
.codes span{background:var(--line);border-radius:8px;padding:6px 8px;text-align:center}

/* inputs / dialogs */
input{font:inherit;width:100%;padding:11px 12px;border-radius:11px;border:1px solid var(--glass-b);background:rgba(0,0,0,.2);color:var(--text);outline:none;transition:.15s}
@media (prefers-color-scheme:light){input{background:rgba(255,255,255,.7)}}
input:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 25%,transparent)}
.err{color:var(--bad);margin:0;min-height:1.3em;font-size:13px}
dialog{background:var(--bg);color:var(--text);border:1px solid var(--glass-b);border-radius:16px;padding:20px;width:min(420px,92vw);box-shadow:var(--shadow)}
dialog.wide{width:min(960px,94vw)}
dialog::backdrop{background:rgba(0,0,0,.55);backdrop-filter:blur(4px)}
pre{margin:0;max-height:68vh;overflow:auto;font:12px/1.5 ui-monospace,Menlo,Consolas,monospace;white-space:pre-wrap;word-break:break-all;background:rgba(0,0,0,.25);padding:12px;border-radius:10px}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:var(--bg);border:1px solid var(--glass-b);padding:10px 18px;border-radius:12px;box-shadow:var(--shadow);z-index:20}

/* login */
.login{min-height:100vh;display:grid;place-items:center;padding:16px}
.login-card{width:100%;max-width:370px;padding:30px 26px;display:flex;flex-direction:column;gap:14px;text-align:center}
.login-card .logo{display:grid;place-items:center}
.or{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:12px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}

@media (max-width:900px){
  .gauges{grid-template-columns:repeat(3,1fr)}
  .tabs a span,.topbar .btn span{display:none}
  .tabs a{padding:9px 12px}
}
@media (max-width:560px){
  .gauges{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.qr{display:grid;place-items:center;text-align:center}
.sess-meta{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.sess-meta div{background:var(--line);border-radius:10px;padding:8px 10px;min-width:0}
.sess-meta small{display:block}.sess-meta b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.note{font-size:12px;border-radius:10px;padding:8px 10px;background:color-mix(in srgb,var(--bad) 14%,transparent);color:var(--bad);word-break:break-word}
.note.warn{background:color-mix(in srgb,var(--warn) 14%,transparent);color:var(--warn)}