:root {
  --bg: #0b1224;
  --panel: #0f172a;
  --accent: #22d3ee;
  --accent-2: #f59e0b;
  --text: #e5e7eb;
  --muted: #94a3b8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: linear-gradient(160deg, rgba(34, 211, 238, 0.15), rgba(245, 158, 11, 0.06)), var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
}

.game-header { text-align: center; margin-bottom: 16px; }
.back { color: var(--accent); text-decoration: none; font-weight: 600; }
.tagline { color: var(--muted); margin: 4px 0 0; }

.game-shell {
  background: var(--panel);
  border: 1px solid #1f2937;
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

#arena {
  background: #0a1325;
  border: 1px solid #111827;
  border-radius: 8px;
}

.hint { color: var(--muted); margin: 0; }