/* LLM Bot Arena — isolated lab theme (no live /shared/style.css) */
:root {
  --teal: #0d9488;
  --teal-dark: #0f766e;
  --teal-soft: #ccfbf1;
  --bg: #eef6f8;
  --ink: #0f172a;
  --muted: #64748b;
  --panel: #ffffff;
  --danger: #b91c1c;
  --warn: #b45309;
  --ok: #047857;
  --chrome-border: #cbd5e1;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
}

#app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1rem 2rem;
}

.chrome { margin-bottom: 0.75rem; }

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.mark {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal-dark);
  background: var(--teal-soft);
  border: 1px solid var(--teal);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
}

h1 {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.stage-wrap {
  display: grid;
  grid-template-columns: minmax(0, 640px) minmax(220px, 1fr);
  gap: 1rem;
  align-items: start;
  position: relative;
}

#arena-host {
  width: 100%;
  max-width: 640px;
  aspect-ratio: 4 / 3;
  background: #0b1220;
  border: 1px solid var(--chrome-border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
  touch-action: none;
  cursor: crosshair;
}

#arena-host canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.hud {
  background: var(--panel);
  border: 1px solid var(--chrome-border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.hud-row {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.92rem;
}

.hud-row span { color: var(--muted); }
.hud-row strong { font-variant-numeric: tabular-nums; color: var(--ink); }

.session-card h2 {
  margin: 0.4rem 0 0.35rem;
  font-size: 0.95rem;
  color: var(--teal-dark);
}

.muted {
  color: var(--muted);
  font-size: 0.82rem;
  margin: 0.25rem 0;
}

.placeholder-flag {
  color: var(--warn);
  font-weight: 600;
}

.session-card dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.2rem 0.65rem;
  margin: 0.4rem 0 0;
  font-size: 0.82rem;
}

.session-card dt {
  color: var(--muted);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.75rem;
}

.session-card dd {
  margin: 0;
  word-break: break-word;
}

.lane-pick {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.35rem;
}

.lane-btn {
  text-align: left;
  border: 1px solid var(--chrome-border);
  background: #f8fafc;
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  cursor: pointer;
  font: inherit;
  color: var(--ink);
  transition: border-color 0.15s, background 0.15s;
}

.lane-btn:hover,
.lane-btn.selected {
  border-color: var(--teal);
  background: var(--teal-soft);
}

.lane-btn strong { display: block; color: var(--teal-dark); }
.lane-btn span { font-size: 0.8rem; color: var(--muted); }

.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.45);
  border-radius: 12px;
  z-index: 5;
  padding: 1rem;
}

.overlay.hidden { display: none; }

.panel {
  background: var(--panel);
  border: 1px solid var(--chrome-border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  max-width: 420px;
  width: 100%;
  padding: 1.15rem 1.25rem;
}

.panel.hidden { display: none; }

.panel h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  color: var(--teal-dark);
}

.panel p { margin: 0.4rem 0; font-size: 0.92rem; line-height: 1.45; }

.controls {
  margin: 0.5rem 0 0.75rem;
  padding-left: 1.1rem;
  font-size: 0.88rem;
  color: var(--ink);
}

.controls kbd {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.78rem;
  background: var(--teal-soft);
  border: 1px solid var(--teal);
  border-radius: 4px;
  padding: 0.05rem 0.35rem;
}

.btn {
  appearance: none;
  border: none;
  background: var(--teal);
  color: #fff;
  font: inherit;
  font-weight: 600;
  border-radius: 8px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  margin-top: 0.35rem;
}

.btn:hover { background: var(--teal-dark); }
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.cta a { color: var(--teal-dark); }
.run-id-line code {
  font-size: 0.85rem;
  background: var(--teal-soft);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.foot { margin-top: 0.85rem; }

.collected {
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--muted);
  max-height: 4.5rem;
  overflow: auto;
}

@media (max-width: 800px) {
  .stage-wrap {
    grid-template-columns: 1fr;
  }
  #arena-host { max-width: 100%; }
}