:root {
  color-scheme: dark;

  /* Brand palette */
  --litecoin-blue: #345dcc;
  --litecoin-blue-bright: #6f9bff;
  --silver-050: #f9fbff;
  --silver-100: #eaf2ff;
  --silver-200: #d6e4ff;
  --silver-300: #b4c4df;
  --silver-500: #7f93b8;
  --navy-950: #05070f;
  --navy-900: #070512;
  --navy-850: #0d182a;
  --navy-800: #121a2d;
  --brass: #c9a34e;
  --brass-bright: #ffe84d;
  --fiat-magenta: #ff3df2;
  --fiat-red: #ff476f;
  --fiat-orange: #ff7b2f;
  --crypto-cyan: #19f7ff;
  --crypto-green: #45ff8a;

  /* Semantic colors */
  --surface-page: var(--navy-900);
  --surface: rgba(18, 11, 44, 0.88);
  --surface-raised: rgba(7, 17, 36, 0.92);
  --surface-glass: rgba(255, 255, 255, 0.06);
  --text-primary: #f9f7ff;
  --text-secondary: #b4aed4;
  --text-inverse: #04121f;
  --accent: var(--crypto-cyan);
  --accent-secondary: var(--fiat-magenta);
  --danger: var(--fiat-red);
  --success: var(--crypto-green);
  --warning: var(--brass-bright);
  --border-subtle: rgba(255, 255, 255, 0.16);
  --focus-ring: 0 0 0 3px rgba(25, 247, 255, 0.42);

  /* Rarity */
  --rarity-common: #c7d0dc;
  --rarity-uncommon: var(--crypto-green);
  --rarity-rare: var(--litecoin-blue-bright);
  --rarity-epic: #9b7aad;
  --rarity-legendary: var(--brass-bright);

  /* Typography: two system-hosted families, no third-party font request */
  --font-display: "Trebuchet MS", "Arial Black", system-ui, sans-serif;
  --font-ui: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "Lucida Console", "SFMono-Regular", Consolas, monospace;
  --type-12: 0.75rem;
  --type-14: 0.875rem;
  --type-16: 1rem;
  --type-20: 1.25rem;
  --type-28: 1.75rem;
  --type-40: 2.5rem;

  /* Spacing, radius, and shadow scales */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 28px;
  --shadow-neon: 0 0 32px rgba(25, 247, 255, 0.12);
  --shadow-panel: var(--shadow-neon), inset 0 0 24px rgba(255, 61, 242, 0.06);

  /* Runtime responsive controls */
  --hud-scale: 1;
  --touch-control-idle-opacity: 0.4;
  --touch-control-active-opacity: 0.7;

  /* Compatibility aliases used by the existing portal and canvas chrome */
  --bg: var(--surface-page);
  --panel: var(--surface);
  --panel-2: var(--surface-raised);
  --glass: var(--surface-glass);
  --neon-pink: var(--fiat-magenta);
  --neon-cyan: var(--crypto-cyan);
  --neon-yellow: var(--brass-bright);
  --neon-green: var(--crypto-green);
  --neon-red: var(--fiat-red);
  --text: var(--text-primary);
  --muted: var(--text-secondary);
  --border: var(--border-subtle);
  --mono: var(--font-mono);
  font-family: var(--font-ui);
}

.tabular-numerals,
[data-stat],
.stat-chip strong,
.arcade-music-time {
  font-variant-numeric: tabular-nums lining-nums;
}

:where(button, a, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  box-shadow: var(--focus-ring);
}