:root {
  --color-bg-app: #020617;
  --color-bg-board: #001a66;
  --color-bg-board-top: #000e3b;
  --color-bg-row-even: #0028a0;
  --color-bg-row-odd: #0030bf;
  --color-bg-row-active: #0f3dff;
  --color-text-primary: #f3e58a;
  --color-text-secondary: #d7c96a;
  --color-text-highlight: #ffe600;
  --color-text-alert: #ffcf33;
  --color-border-strong: #ffe600;
  --color-border-soft: #3357cc;
  --color-grid-line: #2f4ea8;

  --font-family-base: "Rajdhani", "Barlow Condensed", sans-serif;
  --font-family-board: "Orbitron", "Rajdhani", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2.5rem;
  --font-weight-normal: 400;
  --font-weight-bold: 700;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --border-width-thin: 1px;
  --border-width-thick: 2px;

  --shadow-board: 0 10px 24px rgba(0, 0, 0, 0.35);
  --focus-ring: 0 0 0 3px rgba(255, 230, 0, 0.45);
  --transition-fast: 120ms ease;
}