:root{
  --bg:#0a0e14; --bg2:#0f1520; --panel:#131b29; --panel2:#1a2435;
  --line:#22304a; --txt:#e6edf7; --mut:#8a99b3; --mut2:#5d6b85;
  --acc:#3ddc97; --acc2:#2bb3ff; --danger:#ff5c5c; --warn:#ffb74d;
  --rec:#ff3b3b; --radius:14px; --tap:48px;
  font-synthesis:none; -webkit-tap-highlight-color:transparent;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  background:radial-gradient(1200px 600px at 70% -10%, #14202f 0, var(--bg) 55%);
  color:var(--txt); font:15px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  overscroll-behavior:none;
}
body.live-mode #topbar{display:none}
button,.btn,.iconbtn,.ctrl,.pill,.room-pill,.overlay,.chip{
  user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:manipulation;
}
input,textarea,select{user-select:auto;-webkit-user-select:auto}
h1{font-size:22px;margin:6px 0 14px;letter-spacing:.2px}
h2{font-size:18px;margin:0}
h3{font-size:13px;text-transform:uppercase;letter-spacing:.12em;color:var(--mut);margin:20px 0 8px}
label{display:block;font-size:12px;color:var(--mut);margin:12px 0 5px;text-transform:uppercase;letter-spacing:.08em}
small{display:block;font-size:10px;color:var(--mut)}
.spacer{flex:1}
.row{display:flex;align-items:center;gap:10px}
.row.between{justify-content:space-between}
.row.wrap{flex-wrap:wrap}

/* top bar */
#topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:10px;
  padding:max(10px,env(safe-area-inset-top)) 14px 10px;background:rgba(10,14,20,.85);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{font-weight:700;letter-spacing:.3px;display:flex;align-items:center;gap:8px}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--acc);box-shadow:0 0 10px var(--acc)}
.vbatt{font-size:12px;color:var(--mut);font-variant-numeric:tabular-nums}

/* screens */
.screen{padding:16px;max-width:1100px;margin:0 auto}
.screen[hidden]{display:none}

/* buttons */
.btn{appearance:none;border:1px solid var(--line);background:var(--panel);color:var(--txt);
  padding:11px 16px;border-radius:12px;font-weight:600;cursor:pointer;min-height:var(--tap);
  transition:.15s transform,.15s background}
.btn:active{transform:scale(.97)}
.btn.primary{background:linear-gradient(180deg,var(--acc),#28b97e);color:#04130c;border-color:transparent}
.btn.ghost{background:transparent}
.btn.danger{color:var(--danger);border-color:#3a2330}
.btn.big{width:100%;margin-top:16px;font-size:16px;padding:15px}
.btn.sm{padding:8px 12px;min-height:auto;font-size:13px;border-radius:10px}
.iconbtn{appearance:none;border:0;background:transparent;color:var(--txt);font-size:22px;
  width:var(--tap);height:var(--tap);border-radius:12px;cursor:pointer}
.iconbtn.glass{background:rgba(0,0,0,.4);backdrop-filter:blur(8px)}
.iconbtn:active{background:rgba(255,255,255,.08)}
.room-pill{appearance:none;border:0;color:#fff;background:rgba(24,23,20,.68);backdrop-filter:blur(14px);
  min-height:52px;padding:0 20px;border-radius:999px;display:flex;align-items:center;gap:16px;font-size:18px;cursor:pointer}

/* device grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.card{background:linear-gradient(180deg,var(--panel),var(--bg2));border:1px solid var(--line);
  border-radius:var(--radius);padding:16px;cursor:pointer;position:relative;overflow:hidden}
.card:active{transform:scale(.99)}
.card .name{font-weight:700;font-size:16px;margin-bottom:4px;display:flex;align-items:center;gap:8px}
.card .sub{color:var(--mut);font-size:12px}
.card .stats{display:flex;gap:14px;margin-top:14px;flex-wrap:wrap;font-size:13px;color:var(--mut)}
.card .stats b{color:var(--txt);font-weight:600}
.card .gear{position:absolute;top:8px;right:8px}
.status-led{width:9px;height:9px;border-radius:50%;background:var(--mut2);display:inline-block}
.status-led.on{background:var(--acc);box-shadow:0 0 8px var(--acc)}
.status-led.off{background:var(--mut2)}

/* battery chip */
.batt-chip{font-variant-numeric:tabular-nums}
.batt-chip.low{color:var(--warn)} .batt-chip.crit{color:var(--danger)}

/* empty */
.empty{text-align:center;padding:60px 20px;color:var(--mut)}
.empty-art{font-size:54px;margin-bottom:10px}
.empty h2{color:var(--txt);margin-bottom:6px}
.empty .btn{margin-top:18px;display:inline-block}

/* tabs */
.tabs{display:flex;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:5px;margin-bottom:16px}
.tab{flex:1;padding:10px;border:0;background:transparent;color:var(--mut);border-radius:9px;font-weight:600;cursor:pointer}
.tab.active{background:var(--panel2);color:var(--txt)}
.tabpane[hidden]{display:none}
.hint{color:var(--mut);font-size:13px}
textarea,.text,.num{width:100%;background:var(--bg2);border:1px solid var(--line);color:var(--txt);
  border-radius:10px;padding:11px;font:inherit;font-size:14px}
.num{width:70px;text-align:center}
textarea{resize:vertical;font-family:ui-monospace,monospace;font-size:12px}
#scanVideo{width:100%;max-height:50vh;background:#000;border-radius:12px;object-fit:cover}

/* LIVE */
.live{padding:0;max-width:none;position:fixed;inset:0;background:#000}
.video-stage{position:absolute;inset:0;overflow:hidden;background:#000}
#liveVideo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#000;transform-origin:center;transition:transform .18s}
#liveVideo.contain{object-fit:contain}
.live.rot-90 #liveVideo,.live.rot-270 #liveVideo{inset:auto;top:50%;left:50%;width:100vh;height:100vw}
.live.rot-90 #liveVideo{transform:translate(-50%,-50%) rotate(90deg)}
.live.rot-180 #liveVideo{transform:rotate(180deg)}
.live.rot-270 #liveVideo{transform:translate(-50%,-50%) rotate(270deg)}
.overlay{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:space-between;
  pointer-events:none;transition:opacity .22s;opacity:1}
.overlay.hidden{opacity:0}
.overlay.hidden .strip,.overlay.hidden .status-cluster{pointer-events:none}
.overlay .strip{display:flex;align-items:center;gap:8px;padding:14px;pointer-events:auto}
.overlay .strip.top{background:linear-gradient(180deg,rgba(0,0,0,.6),transparent);
  padding-top:max(14px,env(safe-area-inset-top))}
.overlay .strip.bottom{background:linear-gradient(0deg,rgba(0,0,0,.65),transparent);
  padding-bottom:max(16px,env(safe-area-inset-bottom));flex-direction:column;gap:18px}
.status-cluster{position:absolute;left:14px;top:calc(max(14px,env(safe-area-inset-top)) + 62px);display:flex;gap:8px;flex-wrap:wrap;max-width:calc(100vw - 28px);pointer-events:none}
.pill{background:rgba(0,0,0,.5);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.12);
  padding:6px 10px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap;font-variant-numeric:tabular-nums}
.pill.batt.low{color:var(--warn)} .pill.batt.crit{color:var(--danger)}
#connPill[data-s=connected]{color:var(--acc)} #connPill[data-s=reconnecting]{color:var(--warn)}
#connPill[data-s=offline],#connPill[data-s=failed]{color:var(--danger)}
.primary-controls{display:flex;align-items:center;justify-content:center;gap:28px;width:100%;pointer-events:auto}
.ctrl{appearance:none;pointer-events:auto;background:rgba(24,24,22,.62);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.15);
  color:var(--txt);border-radius:999px;min-width:66px;height:66px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:2px;font-size:22px;cursor:pointer}
.ctrl small{font-size:10px;color:#e9e5dc}
.ctrl.active{background:var(--acc);color:#04130c} .ctrl.active small{color:#04130c}
.ctrl.rec-on{background:var(--rec);color:#fff} .ctrl.rec-on small{color:#fff}
.ctrl.talk.active{background:#fff;color:#111}.ctrl.talk.active small{color:#333}
#btnRecord{width:92px;height:92px;border-radius:50%;background:#f2f0ea;color:var(--rec);border:5px solid rgba(255,255,255,.38);font-size:28px}
#btnRecord span{width:28px;height:28px;border-radius:50%;background:var(--rec);display:block}
#btnRecord small{display:none}
#btnRecord.rec-on{background:var(--rec);color:#fff}
.ctrl.more{align-self:flex-end;min-width:112px;height:54px;flex-direction:row;font-size:18px;gap:10px}
.ctrl.more small{font-size:16px;color:#fff}
.quality-select{align-self:center;pointer-events:auto;background:rgba(24,24,22,.62);backdrop-filter:blur(12px);color:var(--txt);border:1px solid rgba(255,255,255,.15);
  border-radius:999px;height:44px;padding:0 14px}
.zoomwrap{pointer-events:auto;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:12px;margin-top:12px}
.zoomwrap label{margin-top:0}.zoomwrap input{width:100%}
.control-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.rec-badge{position:absolute;left:14px;bottom:calc(max(16px,env(safe-area-inset-bottom)) + 126px);background:rgba(0,0,0,.55);color:#fff;padding:6px 12px;
  border-radius:999px;font-weight:700;font-size:13px;display:flex;align-items:center;gap:8px;pointer-events:none}
.rec-dot{width:10px;height:10px;border-radius:50%;background:var(--rec);animation:blink 1s infinite}
@keyframes blink{50%{opacity:.25}}
.livemsg{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:rgba(0,0,0,.48);backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.12);border-radius:999px;color:#fff;font-size:14px;text-align:center;padding:12px 18px;pointer-events:none}

/* sheets */
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:40}
.scrim[hidden]{display:none}
.sheet{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(560px,100%);
  background:var(--panel);border:1px solid var(--line);border-bottom:0;border-radius:18px 18px 0 0;
  z-index:50;padding:18px;padding-bottom:max(18px,env(safe-area-inset-bottom));max-height:85vh;overflow:auto;
  animation:slideup .25s ease}
.sheet.wide{width:min(720px,100%)}
.sheet[hidden]{display:none}
@keyframes slideup{from{transform:translate(-50%,100%)}to{transform:translate(-50%,0)}}
.sheet-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.presets{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 14px}
.chip{border:1px solid var(--line);background:var(--bg2);color:var(--txt);padding:9px 14px;border-radius:999px;cursor:pointer;font-weight:600}
.chip.active{background:var(--acc);color:#04130c;border-color:transparent}
.meta-line{color:var(--mut);font-size:13px;margin:6px 0}
.warn{background:#2a1f12;border:1px solid #4a3617;color:var(--warn);padding:10px 12px;border-radius:10px;font-size:13px;margin-top:10px}

/* diagnostics */
.diag-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.diag-grid .d{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:10px}
.diag-grid .d .k{font-size:11px;color:var(--mut);text-transform:uppercase;letter-spacing:.08em}
.diag-grid .d .v{font-weight:600;margin-top:3px;font-variant-numeric:tabular-nums}
.events{font-family:ui-monospace,monospace;font-size:11px;color:var(--mut);background:var(--bg2);
  border:1px solid var(--line);border-radius:10px;padding:10px;max-height:200px;overflow:auto}
.events div{padding:2px 0;border-bottom:1px solid rgba(255,255,255,.04)}

/* downloads */
.dl-list{display:flex;flex-direction:column;gap:10px;margin-top:10px}
.dl-item{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:12px}
.dl-item .t{font-weight:600;display:flex;justify-content:space-between;gap:8px}
.dl-item .s{color:var(--mut);font-size:12px;margin:4px 0 8px}
.dl-bar{height:6px;background:var(--panel2);border-radius:4px;overflow:hidden;margin:8px 0}
.dl-bar i{display:block;height:100%;width:0;background:var(--acc2);transition:width .2s}
.chunkdots{display:flex;gap:3px;flex-wrap:wrap;margin-top:6px}
.chunkdots b{width:14px;height:6px;border-radius:2px;background:var(--mut2)}
.chunkdots b.ok{background:var(--acc)} .chunkdots b.bad{background:var(--danger)}

.toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:#1c2738;border:1px solid var(--line);
  color:var(--txt);padding:11px 16px;border-radius:12px;z-index:80;font-size:14px;box-shadow:0 8px 30px rgba(0,0,0,.5);max-width:90%}
.toast[hidden]{display:none}
.toast.err{border-color:#4a2330;color:#ffb4b4}
@media(min-width:680px){.diag-grid{grid-template-columns:repeat(3,1fr)}}