/* Airflow Lab — "thermal field instrument".
   The flat's temperature gradient is the color language: cool sky-blue → hot ember.
   Display: Space Grotesk. Data/numerals: JetBrains Mono. */
:root {
  --bg: #0a0c11;
  --bg-2: #0d1018;
  --card: #12161f;
  --card-2: #161b26;
  --line: #1e2530;
  --line-2: #283041;

  --text: #eef2f7;
  --dim: #8893a5;
  --faint: #5b6573;

  /* thermal ramp — used everywhere a value maps to temperature */
  --cool: #38bdf8;
  --cool-2: #22d3ee;
  --mid: #9aa6b6;
  --warm: #fbbf24;
  --hot: #f4733b;
  --hot-2: #ef4444;
  --gold: #ffd24a;

  --good: #34d399;
  --bad: #f87171;

  /* chart.js reads these */
  --c-bg: var(--card);
  --c-card: var(--card);
  --c-text: var(--text);
  --c-dim: var(--dim);
  --c-grid: #1b2230;
  --c-axis: #313b4b;

  --r: 14px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --disp: "Space Grotesk", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background:
    radial-gradient(1100px 520px at 82% -8%, #141b27 0%, rgba(10,12,17,0) 60%),
    radial-gradient(900px 500px at 8% 0%, #15110e 0%, rgba(10,12,17,0) 55%),
    var(--bg);
  color: var(--text);
  font: 14px/1.5 var(--body);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2 { margin: 0; }
.eyebrow { font: 600 10.5px/1 var(--disp); letter-spacing: 2.4px; text-transform: uppercase; color: var(--faint); }

/* topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 15px 22px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 6;
  background: rgba(10,12,17,.8); backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.mark { font: 700 18px/1 var(--disp); letter-spacing: 1.5px; }
.mark-d { color: var(--hot); margin: 0 1px; }
.sub { color: var(--dim); font-size: 11.5px; letter-spacing: .2px; }
.conn { display: flex; align-items: center; gap: 9px; font: 500 12px/1 var(--mono); color: var(--dim); }
.conn .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); transition: .3s; }
.conn .dot.ok { background: var(--good); box-shadow: 0 0 10px var(--good); }
.conn .dot.wait { background: var(--warm); box-shadow: 0 0 8px var(--warm); }
.conn .dot.error { background: var(--bad); box-shadow: 0 0 10px var(--bad); }
.conn .clock { color: var(--text); }

main { padding: 18px; max-width: 1360px; margin: 0 auto; display: flex; flex-direction: column; gap: 18px; }

/* cards / grids */
.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--line); border-radius: var(--r); padding: 15px 17px 17px;
}
.card-h { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.card-h h2 { font: 600 11px/1 var(--disp); letter-spacing: 1.6px; text-transform: uppercase; }
.hint { color: var(--faint); font-size: 11px; }
.grid-2 { display: grid; grid-template-columns: 1.18fr 1fr; gap: 18px; }
@media (max-width: 940px) { .grid-2 { grid-template-columns: 1fr; } }

/* ── HERO / STAGE ─────────────────────────────────────────────────────── */
.stage {
  background: linear-gradient(180deg, #121722, #0c1019);
  border: 1px solid var(--line); border-radius: var(--r); padding: 18px 20px 16px;
  position: relative; overflow: hidden;
}
.stage-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 22px; flex-wrap: wrap; margin-bottom: 6px; }
.verdict { min-width: 240px; }
.verdict-state { font: 700 38px/0.98 var(--disp); letter-spacing: -.5px; margin: 7px 0 2px; }
.verdict-state.good { color: var(--good); } .verdict-state.warn { color: var(--warm); }
.verdict-state.bad { color: var(--bad); } .verdict-state.muted { color: var(--dim); }
.verdict-why { color: var(--dim); font-size: 12.5px; margin: 2px 0 0; max-width: 52ch; }
.chips { display: grid; grid-template-columns: repeat(3, minmax(112px, 1fr)); gap: 8px; }
.chip { background: #0c0f17; border: 1px solid var(--line); border-radius: 9px; padding: 8px 10px; }
.chip-k { display: block; color: var(--faint); font: 600 9px/1.2 var(--disp); letter-spacing: .6px; text-transform: uppercase; }
.chip-v { display: block; font: 700 19px/1.1 var(--mono); margin: 4px 0 1px; font-variant-numeric: tabular-nums; }
.chip-s { display: block; color: var(--dim); font-size: 9.5px; }

.plan-wrap { width: 100%; margin-top: 6px; }
.plan { width: 100%; height: auto; max-height: 84vh; display: block; margin: 0 auto; }

.stage-legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 8px; padding-top: 10px; border-top: 1px solid var(--line); }
.lk { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--dim); }
.lk i { width: 16px; height: 9px; border-radius: 3px; display: inline-block; }
.lk-field { background: linear-gradient(90deg, var(--cool), var(--warm), var(--hot)); }
.lk-stream { background: repeating-linear-gradient(90deg, rgba(150,210,255,.95) 0 3px, transparent 3px 7px); height: 3px !important; }
.lk-occ { background: radial-gradient(circle, rgba(255,236,194,.9), rgba(255,236,194,0)); border-radius: 50% !important; }
.lk-lit { background: radial-gradient(circle, rgba(255,205,120,.9), rgba(255,205,120,0)); border-radius: 50% !important; }
.lk-fan { background: none; box-shadow: inset 0 0 0 1.5px rgba(120,200,255,.8); border-radius: 50% !important; }
.lk-win { color: var(--faint); font: 600 11px var(--mono); letter-spacing: .2px; }

/* ── floor plan SVG ──────────────────────────────────────────────────── */
.plan .room { fill: none; stroke: rgba(150,170,200,.16); stroke-width: 1.4; }
.plan .room.hall { stroke: rgba(34,211,238,.34); }
.plan .room.outdoor { stroke: rgba(120,160,130,.4); stroke-dasharray: 4 3; }
.plan .room-label { fill: #7c879b; font: 500 10px var(--disp); letter-spacing: .3px; }
.plan .door { stroke: #69748a; stroke-width: 2; fill: #69748a; }
.plan .plan-orient { font: 600 10px var(--mono); letter-spacing: .5px; }
.plan .plan-orient.cool { fill: var(--cool); text-anchor: middle; }
.plan .plan-orient.hot { fill: var(--hot); text-anchor: middle; }
.plan .field { opacity: .58; }
.plan .field rect { shape-rendering: crispEdges; }

/* streamlines */
.plan .stream { fill: none; stroke: rgba(160,214,255,.95); stroke-width: 2.4; stroke-linecap: round;
  stroke-dasharray: 2 12; animation-name: flow; animation-timing-function: linear; animation-iteration-count: infinite; }
.plan .flow-static { fill: none; stroke: rgba(120,190,255,.34); stroke-width: 2.4; stroke-dasharray: 2 8; stroke-linecap: round; }
.plan .flow-arrow-head { fill: rgba(150,205,255,.6); }
@keyframes flow { from { stroke-dashoffset: 0; } to { stroke-dashoffset: -28; } }

/* occupancy + lights + fans */
.plan .occ-glow { animation: breathe 3.6s ease-in-out infinite; }
.plan .occ-core { fill: rgba(255,244,214,.9); }
.plan .lit-dot { fill: rgba(255,214,140,.95); }
.plan .fan-ring { fill: none; stroke: rgba(130,205,255,.7); stroke-width: 1.6; animation: fanpulse 2.4s ease-out infinite; }
.plan .fan-ring-static { fill: none; stroke: rgba(130,205,255,.5); stroke-width: 1.5; }
.plan .fan-core { fill: rgba(150,215,255,.95); }
@keyframes breathe { 0%, 100% { opacity: .45; } 50% { opacity: .92; } }
@keyframes fanpulse { from { r: 6px; opacity: .6; } to { r: 27px; opacity: 0; } }

/* windows (clickable) */
.plan .win { cursor: pointer; }
.plan .win-hit { fill: transparent; }
.plan .win:focus { outline: none; }
.plan .win:focus .win-bar { stroke-width: 6; }
.plan .win-bar { stroke-linecap: round; stroke-width: 5; }
.plan .win-closed .win-bar { stroke: #8b95a6; }
.plan .win-open .win-bar { stroke: var(--cool-2); }
.plan .win-unknown .win-bar { stroke: #4a5566; stroke-dasharray: 3 3; }
.plan .win-flow { fill: none; stroke: var(--cool-2); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.plan .win-q { fill: #6b7686; font: 700 13px var(--mono); text-anchor: middle; }

/* sensor pins */
.plan .pin-dot { stroke: var(--bg); stroke-width: 2.5; }
.plan .pin.off .pin-dot { opacity: .5; stroke-dasharray: 3 3; }
.plan .pin-temp { fill: #06080c; font: 700 12px var(--mono); text-anchor: middle; font-variant-numeric: tabular-nums; }
.plan .pin.off .pin-temp { fill: #aeb6c4; }
.plan .pin-name { fill: var(--text); font: 600 10px var(--disp); text-anchor: middle; paint-order: stroke; stroke: rgba(8,10,14,.7); stroke-width: 2.5px; }
.plan .tag { stroke: var(--bg); stroke-width: 1.5; }
.plan .tag-hi { fill: var(--hot-2); } .plan .tag-lo { fill: var(--cool-2); } .plan .tag-q { fill: #64748b; }
.plan .tag-t { fill: #fff; font: 700 8px var(--mono); text-anchor: middle; letter-spacing: .5px; }

/* sky band — sun arc, outdoor readout, wind compass */
.plan .sky-arc { fill: none; stroke: rgba(120,150,190,.2); stroke-width: 1; stroke-dasharray: 2 5; }
.plan .horizon { stroke: rgba(120,150,190,.22); stroke-width: 1; }
.plan .sun-token { fill: var(--gold); }
.plan .sun-halo { fill: rgba(255,210,90,.14); }
.plan .moon { fill: #9fb0c8; }
.plan .sky-note { fill: var(--faint); font: 500 10px var(--mono); text-anchor: middle; letter-spacing: .3px; }
.plan .outdoor .od-k { fill: var(--faint); font: 600 9px var(--disp); letter-spacing: 1.6px; }
.plan .outdoor .od-temp { fill: var(--text); font: 700 22px var(--mono); font-variant-numeric: tabular-nums; }
.plan .outdoor .od-sub { fill: var(--dim); font: 500 10px var(--mono); }
.plan .wind-dial { fill: #0c0f17; stroke: var(--line-2); stroke-width: 1; }
.plan .wind-n { fill: var(--faint); font: 600 8px var(--mono); text-anchor: middle; }
.plan .wind-arrow { stroke-width: 2.4; stroke-linecap: round; }
.plan .wind-spd { fill: var(--dim); font: 600 9px var(--mono); text-anchor: middle; }
.plan .wind-tag { font: 700 9px var(--mono); text-anchor: middle; letter-spacing: .4px; }
.plan .wind-good, .plan .wind-tag.wind-good { stroke: var(--good); fill: var(--good); }
.plan .wind-bad, .plan .wind-tag.wind-bad { stroke: var(--bad); fill: var(--bad); }
.plan .wind-warn, .plan .wind-tag.wind-warn { stroke: var(--warm); fill: var(--warm); }
.plan .wind-muted, .plan .wind-tag.wind-muted { stroke: var(--faint); fill: var(--faint); }

/* ── stack-effect section ────────────────────────────────────────────── */
.section { width: 100%; }
.sectionsvg { width: 100%; height: auto; max-height: 300px; display: block; }
.sectionsvg .sec-room { fill: rgba(255,255,255,.012); stroke: var(--line-2); stroke-width: 1.2; rx: 6; }
.sectionsvg .sec-floor { stroke: #3a4456; stroke-width: 2; }
.sectionsvg .sec-grid { stroke: var(--c-grid); stroke-width: 1; stroke-dasharray: 3 5; }
.sectionsvg .sec-axis { fill: var(--faint); font: 500 9px var(--mono); text-anchor: end; }
.sectionsvg .sec-stem { stroke: #2c3543; stroke-width: 1.4; stroke-dasharray: 2 3; }
.sectionsvg .sec-dot { stroke: var(--bg); stroke-width: 2.5; }
.sectionsvg .sec-dot.off { opacity: .5; stroke-dasharray: 3 3; }
.sectionsvg .sec-temp { fill: #06080c; font: 700 11px var(--mono); text-anchor: middle; font-variant-numeric: tabular-nums; }
.sectionsvg .sec-label { fill: var(--dim); font: 600 10px var(--disp); text-anchor: middle; }
.sectionsvg .sec-h { fill: var(--faint); font: 600 9px var(--mono); text-anchor: middle; }
.sectionsvg .sec-stack { fill: var(--dim); font: 500 11px var(--mono); text-anchor: middle; }

/* ── air quality ─────────────────────────────────────────────────────── */
.airquality { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 1100px) and (min-width: 941px) { .airquality { grid-template-columns: 1fr; } }
.aqcard { background: #0c0f17; border: 1px solid var(--line); border-radius: 11px; padding: 12px 13px; }
.aqcard.off { opacity: .55; }
.aq-h { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.aq-room { font: 600 12px var(--disp); letter-spacing: .3px; }
.aq-cat { font: 700 9.5px var(--mono); padding: 2px 7px; border-radius: 6px; letter-spacing: .4px; }
.aq-cat.good { background: rgba(52,211,153,.16); color: var(--good); }
.aq-cat.fair { background: rgba(251,191,36,.16); color: var(--warm); }
.aq-cat.poor { background: rgba(248,113,113,.16); color: var(--bad); }
.aq-cat.na { background: #1a212c; color: var(--faint); }
.aq-rows { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.aq-cell .aq-k { color: var(--faint); font: 600 9px var(--disp); letter-spacing: .5px; text-transform: uppercase; }
.aq-cell .aq-v { font: 700 17px var(--mono); font-variant-numeric: tabular-nums; }
.aq-cell .aq-u { color: var(--dim); font-size: 9px; margin-left: 2px; }
.aq-note { color: var(--faint); font-size: 11px; margin: 13px 2px 0; line-height: 1.5; }

/* ── charts ──────────────────────────────────────────────────────────── */
.rng button { background: #0c0f17; color: var(--dim); border: 1px solid var(--line);
  padding: 3px 11px; border-radius: 7px; font: 500 11px var(--mono); cursor: pointer; transition: .15s; }
.rng button:hover { color: var(--text); }
.rng button.on { color: var(--text); border-color: #35506e; background: #112030; }
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 820px) { .charts { grid-template-columns: 1fr; } }
.charts figure { margin: 0; }
.charts figcaption { color: var(--dim); font: 500 11px var(--disp); letter-spacing: .4px; margin: 0 0 5px 2px; }
canvas { width: 100%; display: block; }
.legend { display: flex; flex-wrap: wrap; gap: 9px 16px; margin-top: 13px; }
.lg { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--dim); }
.lg i { width: 13px; height: 3px; border-radius: 2px; }
.lg em { color: var(--faint); font-style: normal; font: 700 8.5px var(--mono); letter-spacing: .4px; }

.foot { color: var(--faint); font: 11px var(--mono); text-align: center; padding: 2px 0 20px; }

/* connection banner when token is rejected */
.tokenbar { display: none; }
.tokenbar.show { display: block; background: rgba(248,113,113,.1); border: 1px solid rgba(248,113,113,.35);
  border-radius: 10px; padding: 11px 14px; color: #fca5a5; font-size: 12.5px; }
.tokenbar code { font: 600 11.5px var(--mono); color: #fde2e2; background: rgba(0,0,0,.3); padding: 1px 5px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  .plan .stream, .plan .occ-glow, .plan .fan-ring { animation: none; }
}
@media (prefers-reduced-motion: no-preference) {
  .pin-dot { transition: fill .6s ease, opacity .3s; }
  .verdict-state { transition: color .4s; }
}