:root {
  --bg: #0b0d10;
  --surface: #12151b;
  --text: #f0f1f3;
  --muted: #8b909a;
  --accent: #60a5fa;
  --accent-2: #22d3ee;
  --danger: #f87171;
  --border: #1f232b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

nav .brand {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--accent);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 22px;
  font-size: 0.95rem;
}

nav a:hover, nav a.active { color: var(--text); }

main {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 24px;
  padding: 28px;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 960px) {
  main { grid-template-columns: 1fr; }
}

.game-card, .panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

canvas {
  display: block;
  width: 100%;
  background: #08090d;
  border-radius: 8px;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 18px;
}

.stat h4 {
  margin: 0;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
}

.stat p {
  margin: 6px 0 0;
  font-size: 1.3rem;
  font-weight: 600;
}

select, input[type="range"] {
  width: 100%;
  background: #08090d;
  color: var(--text);
  border: 1px solid #374151;
  border-radius: 6px;
  padding: 6px 8px;
  font: inherit;
}

.controls {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.controls label {
  color: var(--muted);
  font-size: 0.9rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

button {
  background: #1f2937;
  color: var(--text);
  border: 1px solid #374151;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
}

button:hover { background: #273142; }
button.accent { background: var(--accent); color: #0b0d10; border-color: var(--accent); }
button.accent:hover { filter: brightness(1.1); }

.visualizer {
  margin-top: 18px;
}

.visualizer h3 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  color: var(--muted);
}

#net-canvas {
  background: transparent;
  height: 240px;
}

#graph-canvas {
  background: transparent;
  height: 160px;
}

.learn, .arena-help {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px;
}

.learn h1, .arena-help h1 { color: var(--accent); }

/* Agent battle */
.agent-main {
  display: grid;
  grid-template-columns: 280px 1fr 280px;
  gap: 24px;
  align-items: start;
}

.agent-log {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  min-height: 420px;
}

.agent-log h3 {
  margin: 0 0 12px;
  color: var(--accent);
}

.log-stream {
  flex: 1;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
  color: var(--muted);
  background: #0b0d10;
  border-radius: 6px;
  padding: 10px;
  overflow-y: auto;
  max-height: 420px;
}

.log-line {
  margin-bottom: 6px;
  line-height: 1.4;
}

.log-line time {
  color: var(--accent);
  margin-right: 6px;
  opacity: 0.8;
}

.log-line.success {
  color: var(--accent-2);
}

.agent-canvas-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.agent-badges {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.agent-badges .badge {
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.9rem;
}

.badge.openclaw { background: #22d3ee; color: #000; }
.badge.hermes { background: #a78bfa; color: #000; }
.agent-badges .vs { color: var(--muted); }

.agent-actions {
  justify-content: center;
}

.agent-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

@media (max-width: 1100px) {
  .agent-main { grid-template-columns: 1fr; }
  .agent-log { min-height: 200px; }
  .log-stream { max-height: 200px; }
}

footer {
  text-align: center;
  color: var(--muted);
  padding: 30px;
  font-size: 0.85rem;
}