{
  "spacing": {
    "$type": "dimension",
    "$description": "Spacing scale based on 4px base unit. All values are multiples of 4.",
    "0-5": { "$value": "2px",  "$description": "Hairline — icon-to-text tight spacing, fine adjustments" },
    "1":   { "$value": "4px",  "$description": "Tight — inline spacing, minimal gaps between related elements" },
    "2":   { "$value": "8px",  "$description": "Small — related element gaps, compact padding, icon margins" },
    "3":   { "$value": "12px", "$description": "Component internal padding (small), chip padding" },
    "4":   { "$value": "16px", "$description": "Default component padding, form field gap, card grid gutter (mobile)" },
    "5":   { "$value": "20px", "$description": "Medium component spacing" },
    "6":   { "$value": "24px", "$description": "Card padding, section gap (small), card grid gutter (desktop)" },
    "8":   { "$value": "32px", "$description": "Section gap (medium), form section separation" },
    "10":  { "$value": "40px", "$description": "Section gap (large)" },
    "12":  { "$value": "48px", "$description": "Page section separation, vertical rhythm break" },
    "16":  { "$value": "64px", "$description": "Hero/banner vertical spacing" },
    "20":  { "$value": "80px", "$description": "Major page sections, large vertical spacing" }
  },
  "borderRadius": {
    "$type": "dimension",
    "$description": "Border radius scale for consistent rounding across components.",
    "none": { "$value": "0px",    "$description": "Square corners — tables, dividers, sharp elements" },
    "sm":   { "$value": "4px",    "$description": "Small radius — inputs, small interactive elements, chips" },
    "md":   { "$value": "8px",    "$description": "Medium radius — cards, buttons, dropdowns (default)" },
    "lg":   { "$value": "12px",   "$description": "Large radius — modals, large cards" },
    "xl":   { "$value": "16px",   "$description": "Extra large — feature cards, hero elements" },
    "full": { "$value": "9999px", "$description": "Full/pill — avatars, pill buttons, circular elements" }
  }
}