:root {
  /* Palette */
  --color-black:   #0a0a0a;
  --color-red:     #cc0000;
  --color-silver:  #c0c0c0;
  --color-white:   #f5f5f5;
  --color-overlay: rgba(0, 0, 0, 0.6);

  /* Typography */
  --font-heading: 'Oswald', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-size-base: 1rem;
  --line-height-base: 1.6;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  /* Layout */
  --max-width:    1200px;
  --header-height: 126px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;

  /* Z-index scale */
  --z-header:  100;
  --z-overlay: 200;
  --z-modal:   300;
}

/* Focus ring — red/silver for dark palette */
:focus-visible {
  outline: 2px solid var(--color-red);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-base: 0ms;
  }
}

@media (min-width: 1280px) {
  :root {
    --header-height: 147px;
  }
}