:root {
  --bg: #08080a;
  --panel: #131317;
  --panel-2: #1b1b21;
  --line: #2a2a32;
  --text: #f5f5f6;
  --muted: #9b9ba6;
  --red: #ff2a1f;
  --amber: #ffb020;
  --green: #36d67c;
  --display: 'DIN Alternate', 'Bahnschrift', 'Barlow Condensed', 'Arial Narrow', system-ui, sans-serif;
  --ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ui);
}

[hidden] {
  display: none !important;
}

/* ---------- start-light gantry (shared by game, overlay, host) ---------- */

.gantry {
  --lamp: 64px;
  display: flex;
  justify-content: center;
  gap: calc(var(--lamp) * 0.28);
  padding: calc(var(--lamp) * 0.3) calc(var(--lamp) * 0.38);
  background: linear-gradient(180deg, #1c1c22, #0b0b0e);
  border: 1px solid #26262d;
  border-radius: calc(var(--lamp) * 0.32);
  box-shadow:
    0 calc(var(--lamp) * 0.25) calc(var(--lamp) * 0.7) rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.pod {
  display: flex;
  flex-direction: column;
  gap: calc(var(--lamp) * 0.18);
  padding: calc(var(--lamp) * 0.16);
  background: #040405;
  border-radius: calc(var(--lamp) * 0.66);
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.85);
}

/* Lamps switch instantly – no transitions, or the measured "lights out" moment would blur. */
.lamp {
  display: block;
  width: var(--lamp);
  height: var(--lamp);
  border-radius: 50%;
  background: radial-gradient(circle at 38% 32%, #3a1512 0%, #200706 48%, #110303 100%);
  box-shadow:
    inset 0 0 0 calc(var(--lamp) * 0.04) #000,
    inset 0 calc(var(--lamp) * -0.08) calc(var(--lamp) * 0.2) rgba(0, 0, 0, 0.6);
}

.pod.on .lamp {
  background: radial-gradient(circle at 38% 32%, #fff1ec 0%, #ff6b57 14%, #ff1d10 38%, #c40800 70%, #6a0000 100%);
  box-shadow:
    0 0 calc(var(--lamp) * 0.3) rgba(255, 40, 20, 0.9),
    0 0 calc(var(--lamp) * 0.9) rgba(255, 20, 0, 0.45);
}

.gantry.fault .lamp {
  animation: fault 0.5s steps(1) infinite;
}

@keyframes fault {
  0% {
    background: radial-gradient(circle at 38% 32%, #fff6e0 0%, #ffc04a 16%, #ff9800 45%, #a85a00 100%);
    box-shadow: 0 0 calc(var(--lamp) * 0.4) rgba(255, 160, 20, 0.85);
  }
  50% {
    background: radial-gradient(circle at 38% 32%, #3a2a12 0%, #1d1407 48%, #0e0903 100%);
    box-shadow: none;
  }
}

.time-digits {
  font-family: var(--display);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  line-height: 0.9;
}