/* Webflow-inspired design system (see DESIGN.md).
   Single family (Inter as WF Visual Sans substitute), weight ceiling 600,
   near-black ink #080808 on white canvas, hairline borders, tight radii. */
:root {
  --ink:#080808; --ink-strong:#222; --body:#363636; --body-mid:#5a5a5a;
  --mute:#898989; --mute-soft:#ababab; --hairline:#d8d8d8; --canvas:#fff;
  --orange:#ff6b00; --blue:#3b89ff; --green:#00d722;
  --r-sm:4px; --r-md:8px;
  --shadow:0 84px 24px rgba(0,0,0,0),0 54px 22px rgba(0,0,0,.01),
           0 30px 18px rgba(0,0,0,.04),0 13px 13px rgba(0,0,0,.08),0 3px 7px rgba(0,0,0,.09);
  --sans:"Inter",system-ui,-apple-system,sans-serif;
  --mono:"Inconsolata",ui-monospace,SFMono-Regular,Menlo,monospace;
}
* { box-sizing:border-box; }
body {
  margin:0; background:var(--canvas); color:var(--body);
  font-family:var(--sans); font-feature-settings:"ss01"; -webkit-font-smoothing:antialiased;
}
b { font-weight:600; color:var(--ink); }
.mono { font-family:var(--mono); }
.mute { color:var(--mute); }

/* nav */
.nav { display:flex; align-items:center; justify-content:space-between;
  padding:16px 32px; border-bottom:1px solid var(--hairline);
  position:sticky; top:0; background:var(--canvas); z-index:1000; }
.nav-brand { font-weight:600; letter-spacing:-.2px; color:var(--ink); }
.nav-links { display:flex; gap:24px; }
.nav-link { font-size:14px; font-weight:500; color:var(--ink); }

/* hero */
.hero { padding:56px 32px 24px; max-width:1040px; }
.eyebrow { text-transform:uppercase; font-size:15px; font-weight:500; letter-spacing:1.5px;
  color:var(--ink); margin-bottom:16px; }
.display { font-size:56px; line-height:1.04; font-weight:600; letter-spacing:-.8px;
  color:var(--ink); margin:0 0 16px; }
.lead { font-size:20px; line-height:1.5; color:var(--body); max-width:760px; margin:0; letter-spacing:-.16px; }

/* bands */
.band { padding:28px 32px; }
.note { font-size:14px; color:var(--body-mid); margin:14px 0 0; }

/* metrics */
.metrics { display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:8px; max-width:640px; }
.metric { border:1px solid var(--hairline); border-radius:var(--r-md); padding:20px; background:var(--canvas); }
.metric.feat { box-shadow:var(--shadow); border-color:transparent; }
.metric .k { font-size:12px; font-weight:500; letter-spacing:.6px; text-transform:uppercase; color:var(--mute); }
.metric .v { font-size:32px; font-weight:600; letter-spacing:-.5px; color:var(--ink); margin-top:8px; line-height:1; }
.metric .u { font-size:13px; color:var(--body-mid); margin-top:6px; }
.metric .v.orange { color:var(--orange); } .metric .v.blue { color:var(--blue); }

/* columns */
.cols { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:16px; }
.cols-2 { grid-template-columns:1fr 1fr; }
.cols-2 .map { height:540px; }
.card { border:1px solid var(--hairline); border-radius:var(--r-md); overflow:hidden; background:var(--canvas); }
.col-head { display:flex; align-items:center; gap:12px; padding:16px 16px; border-bottom:1px solid var(--hairline); }
.col-title { font-size:16px; font-weight:600; color:var(--ink); }
.col-sub { font-size:12px; color:var(--body-mid); margin-top:2px; }
.badge { font-size:12.8px; font-weight:550; padding:4px 8px; border-radius:var(--r-sm); color:#fff; white-space:nowrap; }
.badge-ink { background:var(--ink); } .badge-orange { background:var(--orange); } .badge-blue { background:var(--blue); }
.map { height:460px; width:100%; }

/* AOI switch */
.aoi-switch { display:flex; gap:8px; margin-top:14px; }
.aoi-btn { font:500 14px/1 var(--sans); letter-spacing:-.16px; color:var(--ink);
  background:var(--canvas); border:1px solid var(--hairline); border-radius:var(--r-sm);
  padding:10px 16px; cursor:pointer; }
.aoi-btn.on { background:var(--ink); color:#fff; border-color:var(--ink); }

/* pipeline flow strips */
.pipes { display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:16px; }
.pipe { border:1px solid var(--hairline); border-radius:var(--r-md); padding:16px 18px; }
.pipe-h { font-size:14px; font-weight:500; color:var(--ink); display:flex; align-items:center; gap:8px; margin-bottom:8px; }
.pipe-flow { font-size:13px; color:var(--body); line-height:1.7; }

/* cesium tweaks */
.map { background:#05070a; position:relative; }
.cesium-viewer, .cesium-widget, .cesium-widget canvas { width:100%; height:100%; }
.cesium-viewer-bottom, .cesium-widget-credits { display:none !important; }
.cesium-viewer .cesium-widget-credits { display:none !important; }

/* footer */
.footer { padding:32px; border-top:1px solid var(--hairline); color:var(--body-mid);
  font-size:14px; display:flex; flex-direction:column; gap:4px; margin-top:8px; }

@media (max-width:991px){ .cols{grid-template-columns:1fr;} .metrics{grid-template-columns:repeat(3,1fr);}
  .display{font-size:40px;} }
@media (max-width:560px){ .metrics{grid-template-columns:repeat(2,1fr);} }

/* PoC page: histogram, timing table, notes */
.hist { display:flex; flex-direction:column; gap:7px; }
.hrow { display:grid; grid-template-columns:56px 1fr 40px; align-items:center; gap:10px; }
.hlab { font-size:12px; color:var(--body-mid); text-align:right; }
.htrack { height:14px; background:#f0f0f0; border-radius:3px; overflow:hidden; }
.hbar { display:block; height:100%; background:var(--orange); }
.hval { font-size:12px; color:var(--ink); text-align:right; }
.ttable { width:100%; border-collapse:collapse; font-size:14px; }
.ttable td { padding:8px 0; border-bottom:1px solid var(--hairline); color:var(--body); }
.ttable td:last-child { text-align:right; color:var(--ink); }
.ttable tr.tot td { font-weight:600; color:var(--ink); }
.notes { margin:0; padding-left:18px; color:var(--body); font-size:14px; line-height:1.7; }
.notes li { margin-bottom:4px; }

/* Tobago interactive: pick box + height legend overlay */
.pickbox { position:absolute; left:12px; bottom:12px; z-index:5; max-width:260px;
  background:rgba(255,255,255,.94); border:1px solid var(--hairline); border-radius:var(--r-sm);
  padding:10px 12px; font-size:12.5px; color:var(--ink); line-height:1.5; box-shadow:var(--shadow); }
.legend { position:absolute; right:12px; bottom:12px; z-index:5; display:flex; align-items:center;
  gap:8px; background:rgba(255,255,255,.94); border:1px solid var(--hairline); border-radius:var(--r-sm);
  padding:6px 10px; font:500 11px/1 var(--mono); color:var(--ink); }
.legend .ramp { width:120px; height:10px; border-radius:2px;
  background:linear-gradient(90deg,#ffd24d,#ff8a00,#e5312b,#8c145a); }

/* Tobago pipeline steps list */
.steps { margin:0; padding-left:18px; color:var(--body); font-size:13.5px; line-height:1.65; }
.steps li { margin-bottom:8px; }
.steps li b { color:var(--ink); }