:root {
  --bg: #05080f;
  --bg-grad-a: rgba(16, 28, 51, 0.55);
  --bg-grad-b: rgba(5, 8, 15, 0.9);
  --panel: #0d1320;
  --panel2: #0a1018;
  --line: #1b2738;
  --line-hi: #27374e;
  --txt: #d9e4f4;
  --muted: #77879f;
  --accent: #2dd4bf;
  --accent-2: #38bdf8;
  --ok: #34d399;
  --warn: #fbbf24;
  --crit: #fb7185;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;
  --rad: 16px;
  --rad-s: 10px;
  --font-size: 14px;
  --num-size: 30px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--txt); font-family: var(--sans); font-size: var(--font-size); }
body {
  min-height: 100vh;
  background: radial-gradient(1200px 640px at 72% -14%, var(--bg-grad-a) 0%, var(--bg-grad-b) 62%), var(--bg);
}

/* ---------- top bar ---------- */
header {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px;
  padding: 14px 26px; border-bottom: 1px solid var(--line); backdrop-filter: blur(6px);
  position: sticky; top: 0; z-index: 40; background: rgba(5, 8, 15, 0.82);
}
.brand { display: flex; align-items: center; gap: 12px; }
.mark {
  width: 36px; height: 36px; border-radius: 11px; display: grid; place-items: center;
  font-weight: 800; font-size: 16px; color: #041018;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 18px rgba(45, 212, 191, 0.35);
}
.brand h1 { font-size: 16px; letter-spacing: 0.4px; font-weight: 650; }
.brand .sub { color: var(--muted); font-family: var(--mono); font-size: 11px; margin-top: 2px; letter-spacing: 0.03em; }
nav { display: flex; gap: 4px; justify-self: center; }
nav button {
  background: transparent; border: 1px solid transparent; color: var(--muted);
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 8px 14px; border-radius: 999px; cursor: pointer; transition: all 0.15s ease;
}
nav button:hover { color: var(--txt); }
nav button.on { color: #041018; background: linear-gradient(135deg, var(--accent), var(--accent-2)); border-color: transparent; }
.hud-meta { display: flex; align-items: center; gap: 10px; justify-self: end; }
.pill {
  display: inline-flex; align-items: center; gap: 7px; font-size: 11.5px; font-weight: 600;
  padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel);
  font-family: var(--mono); letter-spacing: 0.03em;
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); animation: pulse 1.8s infinite; }
@keyframes pulse { 50% { opacity: 0.3; } }
.pill.warn { color: var(--warn); border-color: #56420f; }
.pill.crit { color: var(--crit); border-color: #712a33; }
.pill.ok { color: var(--ok); border-color: #14532d; }
.iconbtn {
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  border-radius: 999px; padding: 7px 13px; font-size: 11.5px; font-weight: 600; cursor: pointer;
  font-family: var(--mono); letter-spacing: 0.03em; transition: all 0.15s ease;
}
.iconbtn:hover { color: var(--txt); border-color: var(--line-hi); }
.iconbtn.on { color: var(--accent); border-color: #1d6b60; }

/* ---------- layout ---------- */
main.view { display: none; max-width: 1280px; margin: 0 auto; padding: 22px 26px 80px; }
main.view.on { display: block; }
section.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--rad);
  padding: 16px 18px; position: relative; overflow: hidden;
}
.card h3 {
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
  font-weight: 600; display: flex; align-items: center; gap: 8px; margin-bottom: 12px;
}
.card h3 .prov { margin-left: auto; }
h4.chiphead { color: var(--muted); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 600; margin: 18px 0 10px; }

/* provenance dots */
.prov {
  display: inline-flex; align-items: center; gap: 5px; font-family: var(--mono);
  font-size: 9.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px; cursor: help;
}
.prov i { width: 6px; height: 6px; border-radius: 50%; display: inline-block; }
.prov.measured i { background: var(--ok); }
.prov.prediction i { background: var(--accent-2); }
.prov.derived i { background: var(--accent); }
.prov.documentation i { background: #a78bfa; }
.prov.simulator i { background: var(--warn); }

/* ---------- glance: SOC donut + range ring ---------- */
#glance { grid-template-columns: 340px 1fr 1fr 1fr; }
.socwrap { display: grid; place-items: center; }
.svg { position: relative; width: 250px; height: 250px; }
.svg svg { transform: rotate(-90deg); }
.ring { fill: none; stroke: var(--line); stroke-width: 13; }
.ring.val { stroke: var(--accent); stroke-linecap: round; transition: stroke-dashoffset 0.6s ease; }
.ring.range { stroke: var(--line-hi); stroke-width: 4; }
.ring.range.val { stroke: var(--accent-2); transition: stroke-dashoffset 0.6s ease; }
.ring.charge { stroke: var(--ok); stroke-width: 4; stroke-dasharray: 4 6; stroke-linecap: round; }
.svg .core { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
.svg .core .big { font-family: var(--mono); font-size: 44px; font-weight: 700; line-height: 1; }
.svg .core .cap { color: var(--muted); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; margin-top: 4px; }
.svg .core .range { color: var(--accent-2); font-family: var(--mono); font-size: 16px; margin-top: 6px; }

/* ---------- glance: energy + speed ---------- */
.energy { display: grid; grid-template-rows: auto 1fr auto; gap: 10px; }
.speed.big { font-family: var(--mono); font-size: var(--num-size); font-weight: 700; }
.speed .u { color: var(--muted); font-size: 12px; }
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.flow .tile { background: var(--panel2); border: 1px solid var(--line); border-radius: var(--rad-s); padding: 12px; text-align: center; }
.flow .tile .k { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; }
.flow .tile .v { font-family: var(--mono); font-size: 20px; font-weight: 700; margin-top: 6px; }
.flow .tile .v.regen { color: var(--accent-2); }
.flow .tile .v.draw { color: var(--txt); }
.statrow { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.mini { background: var(--panel2); border: 1px solid var(--line); border-radius: var(--rad-s); padding: 9px 12px; }
.mini .k { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; }
.mini .v { font-family: var(--mono); font-size: 15px; font-weight: 650; margin-top: 3px; }

/* ---------- glance: thermal ---------- */
.thermal { display: grid; gap: 12px; }
.tbar { display: grid; gap: 5px; }
.tbar .lbl { display: flex; justify-content: space-between; font-size: 11.5px; color: var(--muted); }
.tbar .lbl b { color: var(--txt); font-weight: 650; }
.track { position: relative; height: 14px; background: var(--panel2); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.track .fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--accent-2), var(--accent)); transition: width 0.5s ease; }
.track .fill.hot { background: linear-gradient(90deg, var(--warn), var(--crit)); }
.track .tick { position: absolute; width: 2px; height: 100%; background: rgba(255, 255, 255, 0.25); }
.track.voltage .fill { background: linear-gradient(90deg, var(--accent-2), var(--accent)); }

/* ---------- glance: tyres ---------- */
.tyres { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tyre {
  background: var(--panel2); border: 1px solid var(--line); border-radius: var(--rad-s);
  padding: 10px 12px; border-left: 3px solid var(--line);
}
.tyre.warn { border-left-color: var(--warn); }
.tyre .pos { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; display: flex; justify-content: space-between; }
.tyre .p { font-family: var(--mono); font-size: 22px; font-weight: 700; margin-top: 4px; }
.tyre .p small { color: var(--muted); font-size: 11px; font-weight: 500; }
.tyre .slope { font-family: var(--mono); font-size: 11px; margin-top: 4px; }
.tyre .slope.down { color: var(--crit); }
.tyre .slope.ok { color: var(--muted); }
.tyre svg { margin-top: 6px; width: 100%; height: 26px; }

/* ---------- alert banner ---------- */
.alertbar {
  display: flex; align-items: center; gap: 14px; padding: 13px 18px; border-radius: var(--rad);
  border: 1px solid; margin-bottom: 16px; animation: slidein 0.35s ease;
}
.alertbar.warning { background: rgba(251, 191, 36, 0.08); border-color: #5c4a17; }
.alertbar.critical { background: rgba(251, 113, 133, 0.08); border-color: #712a33; }
.alertbar.info { background: rgba(52, 211, 153, 0.07); border-color: #14532d; }
@keyframes slidein { from { opacity: 0; transform: translateY(-6px); } }
.alertbar .sev { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; }
.alertbar .msg { flex: 1; font-size: 13.5px; }
.alertbar .msg b { font-weight: 650; }
.alertbar .acts { display: flex; gap: 8px; }

/* ---------- ask/chat ---------- */
#chatlog { display: flex; flex-direction: column; gap: 14px; max-height: 60vh; overflow: auto; }
.qa { display: flex; flex-direction: column; gap: 6px; }
.bubble { max-width: 86%; padding: 12px 16px; border-radius: 14px; font-size: 14px; line-height: 1.6; white-space: pre-wrap; }
.q { align-self: flex-end; background: #14324a; border-bottom-right-radius: 4px; display: flex; gap: 8px; align-items: flex-start; }
.a { align-self: flex-start; background: var(--panel2); border: 1px solid var(--line); border-bottom-left-radius: 4px; min-width: 46%; }
.qa .meta {
  color: var(--muted); font-family: var(--mono); font-size: 10.5px; padding-top: 9px; margin-top: 9px;
  border-top: 1px dashed var(--line); display: flex; flex-wrap: wrap; gap: 5px 12px;
}
.qa .cites { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.cite { font-family: var(--mono); font-size: 10.5px; padding: 4px 9px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); background: var(--panel); }
.cite.doc { color: #c4b5fd; border-color: #4c3a7a; }
.askrow { display: flex; gap: 10px; margin-top: 16px; }
input[type=text] {
  flex: 1; background: var(--panel2); border: 1px solid var(--line); color: var(--txt);
  border-radius: 12px; padding: 12px 16px; font-size: 14px; outline: none; font-family: var(--sans);
}
input[type=text]:focus { border-color: var(--accent); }
button.act {
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #041018;
  border: 0; border-radius: 12px; padding: 0 20px; font-weight: 700; font-size: 13.5px; cursor: pointer;
}
button.act:disabled { opacity: 0.45; cursor: wait; }
button.mic {
  background: var(--panel); border: 1px solid var(--line); color: var(--txt); border-radius: 12px;
  width: 52px; cursor: pointer; font-size: 17px; transition: all 0.15s ease;
}
button.mic.listening { background: radial-gradient(circle at center, #712a33, #4a1a22); border-color: var(--crit); animation: pulse 1.4s infinite; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pillq {
  background: var(--panel2); color: var(--txt); border: 1px solid var(--line);
  padding: 6px 12px; border-radius: 999px; font-size: 12px; cursor: pointer; transition: all 0.15s ease;
}
.pillq:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- alerts ---------- */
.evcard { border: 1px solid var(--line); border-radius: var(--rad-s); background: var(--panel2); padding: 14px 16px; margin-bottom: 12px; }
.evcard .top { display: flex; align-items: center; gap: 10px; }
.evcard .sevtag { font-size: 10.5px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; padding: 4px 9px; border-radius: 999px; }
.evcard .status { font-family: var(--mono); font-size: 10px; color: var(--muted); }
.evcard h4 { font-size: 14.5px; font-weight: 650; flex: 1; }
.evcard .sub { color: var(--muted); font-size: 12.5px; margin-top: 6px; line-height: 1.55; }
.evcard table { width: 100%; border-collapse: collapse; margin-top: 12px; font-family: var(--mono); font-size: 11.5px; }
.evcard td { padding: 5px 8px; border-top: 1px dashed var(--line); }
.evcard td.k { color: var(--muted); width: 42%; }
.evcard td.v b { color: var(--txt); }
.detector-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.det { font-family: var(--mono); font-size: 11px; padding: 5px 11px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel2); }
.det.ok { color: var(--ok); border-color: #14532d; }
.det.skip { color: var(--muted); border-color: var(--line); }
.det.skip b { color: var(--warn); }

/* ---------- predict ---------- */
.coverage { display: flex; align-items: center; gap: 12px; margin-top: 6px; }
.coverage .bar { flex: 1; height: 8px; background: var(--panel2); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.coverage .bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-2), var(--accent)); }
.splitbar { display: flex; height: 14px; border-radius: 999px; overflow: hidden; border: 1px solid var(--line); margin-top: 8px; }
.splitbar .phys { background: var(--accent-2); }
.splitbar .ml { background: #a78bfa; }
.legenddots { display: flex; gap: 16px; margin-top: 8px; font-size: 11.5px; color: var(--muted); }
.legenddots i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 5px; }
.causes li { list-style: none; display: grid; grid-template-columns: 150px 1fr auto; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px dashed var(--line); font-size: 12.5px; }
.causes .pct { font-family: var(--mono); font-weight: 650; }
.check { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; color: var(--muted); padding: 5px 0; }
.check.ok i { width: 8px; height: 8px; border-radius: 50%; background: var(--ok); }

/* ---------- inspect ---------- */
.dgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.compare textarea {
  width: 100%; background: var(--panel2); border: 1px solid var(--line); color: var(--txt);
  border-radius: var(--rad-s); padding: 12px; font-size: 13px; min-height: 74px; resize: vertical; font-family: var(--sans);
}
.cmpgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.cmpcard { background: var(--panel2); border: 1px solid var(--line); border-radius: var(--rad-s); padding: 12px 14px; }
.cmpcard .who { font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: 0.05em; }
.cmpcard .out { font-size: 12.5px; line-height: 1.6; margin-top: 8px; white-space: pre-wrap; color: var(--txt); }
.cmpcard.refused { border-color: var(--crit); }
.kv { display: grid; grid-template-columns: auto 1fr; gap: 5px 14px; font-family: var(--mono); font-size: 11.5px; }
.kv .k { color: var(--muted); }
.kv .v { color: var(--txt); }
.srvc { display: flex; align-items: center; gap: 9px; padding: 6px 0; font-family: var(--mono); font-size: 12.5px; }
.srvc .dot { width: 8px; height: 8px; border-radius: 50%; }
.srvc .ok { color: var(--ok); }
.srvc .degraded { color: var(--warn); }

/* ---------- provenance popover ---------- */
.pop {
  position: fixed; z-index: 90; max-width: 320px; background: #101a2e; border: 1px solid var(--line-hi);
  border-radius: 12px; padding: 12px 14px; font-size: 12px; line-height: 1.55; box-shadow: 0 12px 34px rgba(0, 0, 0, 0.55);
}
.pop .t { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--txt); text-transform: uppercase; font-size: 11px; letter-spacing: 0.08em; margin-bottom: 6px; }
.pop .t i { width: 8px; height: 8px; border-radius: 50%; }
.pop p { color: #b7c4d8; }

/* obs */ .obs { color: var(--muted); font-size: 11px; font-family: var(--mono); }
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); z-index: 95;
  background: #101a2e; border: 1px solid var(--line-hi); color: var(--txt); border-radius: 999px;
  padding: 10px 18px; font-size: 12.5px; box-shadow: 0 12px 34px rgba(0, 0, 0, 0.55);
}

/* ---------- cockpit mode ---------- */
body.cockpit { --font-size: 17px; --num-size: 44px; }
body.cockpit header { padding: 12px 22px; }
body.cockpit main.view { padding: 18px 22px 40px; }
body.cockpit #glance { grid-template-columns: 400px 1fr 1fr 1fr; gap: 14px; }
body.cockpit .svg { width: 300px; height: 300px; }
body.cockpit .svg .core .big { font-size: 56px; }
body.cockpit .flow .tile .v { font-size: 26px; }
body.cockpit .tyre .p { font-size: 28px; }
body.cockpit .alertbar { padding: 17px 22px; font-size: 15px; }
body.cockpit .bubble { font-size: 16px; }
body.cockpit nav button { font-size: 14px; padding: 10px 18px; }
body.cockpit .pop, body.cockpit .toast { font-size: 14px; }

@media (max-width: 1080px) {
  #glance { grid-template-columns: 1fr 1fr; }
  .dgrid { grid-template-columns: 1fr; }
  section.row { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  header { grid-template-columns: auto 1fr; }
  nav { order: 3; grid-column: 1 / -1; justify-self: stretch; overflow-x: auto; }
  #glance { grid-template-columns: 1fr; }
}