// Design tokens for <PROJECT NAME>.
// Generated by Composer's ui-system phase.
// Single source of truth — colors, type, spacing, radii, shadows,
// density, motion, accessibility. Import this in mocks AND in real
// UI code; do not hardcode visual values.

// =============================================================================
// COLOR
// =============================================================================

export const color = {
  brand: {
    primary:   "<TBD: #hex>",
    // secondary: "<TBD>",
  },

  // Neutral scale, tone: <warm | cool | true>
  neutral: {
    50:  "<TBD>",
    100: "<TBD>",
    200: "<TBD>",
    300: "<TBD>",
    400: "<TBD>",
    500: "<TBD>",
    600: "<TBD>",
    700: "<TBD>",
    800: "<TBD>",
    900: "<TBD>",
    950: "<TBD>",
  },

  semantic: {
    success: "<TBD>",
    warning: "<TBD>",
    error:   "<TBD>",
    info:    "<TBD>",
  },

  // Accessibility tokens
  focus:        "<TBD>",   // focus-ring color
  selection:    "<TBD>",   // text selection background

  // Text on each neutral background, pre-verified for contrast
  textOnLight:  "<TBD>",   // body text on neutral.50–neutral.200 — must be ≥ 4.5:1
  textOnDark:   "<TBD>",   // body text on neutral.800–neutral.950 — must be ≥ 4.5:1
  textMuted:    "<TBD>",   // secondary text — must be ≥ 4.5:1 for body, 3:1 for UI
} as const;

// Dark-mode overrides (only filled in if dark mode = yes/system).
// When dark mode is active, prefer these over `color.*`.
export const colorDark = {
  brand:    { primary: "<TBD>" },
  neutral:  { 50: "<TBD>", 100: "<TBD>", /* … */ 950: "<TBD>" },
  semantic: { success: "<TBD>", warning: "<TBD>", error: "<TBD>", info: "<TBD>" },
} as const;

// =============================================================================
// TYPOGRAPHY
// =============================================================================

export const fontFamily = {
  display: '"<TBD: name>", system-ui, -apple-system, sans-serif',
  body:    '"<TBD: name>", system-ui, -apple-system, sans-serif',
  mono:    'ui-monospace, "SF Mono", Menlo, Consolas, monospace',
} as const;

// Modular scale — base × ratio
export const fontSize = {
  xs:    "12px",
  sm:    "14px",
  base:  "16px",   // <TBD: confirm base>
  lg:    "18px",
  xl:    "20px",
  "2xl": "24px",
  "3xl": "30px",
  "4xl": "36px",
  "5xl": "48px",
} as const;

export const fontWeight = {
  regular:  400,
  medium:   500,
  semibold: 600,
  bold:     700,
} as const;

export const lineHeight = {
  tight:   1.2,    // display
  normal:  1.5,    // body
  relaxed: 1.7,    // long-form prose
} as const;

export const letterSpacing = {
  tight:  "-0.02em",
  normal: "0",
  wide:   "0.04em",
} as const;

// =============================================================================
// SPACING
// =============================================================================

export const spacingBase = 4; // <TBD: 4 or 8>

export const spacing = {
  0:    0,
  0.5:  0.5  * spacingBase,
  1:    1    * spacingBase,
  1.5:  1.5  * spacingBase,
  2:    2    * spacingBase,
  3:    3    * spacingBase,
  4:    4    * spacingBase,
  6:    6    * spacingBase,
  8:    8    * spacingBase,
  12:   12   * spacingBase,
  16:   16   * spacingBase,
  24:   24   * spacingBase,
} as const;

// Padding tokens by density posture — components reference these
// rather than picking spacing values directly. Switch the global
// density by re-pointing `density` (or per-component override).
export const padding = {
  tight:   { x: spacing[2], y: spacing[1]   },
  default: { x: spacing[3], y: spacing[2]   },
  loose:   { x: spacing[4], y: spacing[3]   },
} as const;

export const density = "default" as keyof typeof padding; // <TBD: "tight" | "default" | "loose">

// =============================================================================
// RADII
// =============================================================================

export const radius = {
  none: "0",
  sm:   "<TBD>",
  md:   "<TBD>",
  lg:   "<TBD>",
  pill: "9999px",
  full: "9999px",
} as const;

// =============================================================================
// SHADOWS
// =============================================================================

export const shadow = {
  none: "none",
  xs:   "<TBD>",
  sm:   "<TBD>",
  md:   "<TBD>",
  lg:   "<TBD>",
  xl:   "<TBD>",
} as const;

// =============================================================================
// MOTION
// =============================================================================

export const motion = {
  duration: {
    instant: 0,
    fast:    150,
    default: 250,
    slow:    400,
    slower:  600,
  },
  easing: {
    standard: "cubic-bezier(0.2, 0, 0, 1)",
    accel:    "cubic-bezier(0.4, 0, 1, 1)",
    decel:    "cubic-bezier(0, 0, 0.2, 1)",
    bounce:   "cubic-bezier(0.34, 1.56, 0.64, 1)",
  },
} as const;

// =============================================================================
// Z-INDEX
// =============================================================================

export const zIndex = {
  base:     0,
  raised:   10,
  dropdown: 100,
  sticky:   200,
  drawer:   300,
  modal:    400,
  popover:  500,
  toast:    600,
  tooltip:  700,
  max:      9999,
} as const;

// =============================================================================
// BREAKPOINTS
// =============================================================================
// Note: breakpoint values live here for visual-token coordination, but the
// authoritative *interpretation* (mobile-first, primary target, etc.) is in
// the interaction-design skill.

export const breakpoint = {
  sm: "640px",
  md: "768px",
  lg: "1024px",
  xl: "1280px",
  "2xl": "1536px",
} as const;

// =============================================================================
// HIT TARGETS (a11y)
// =============================================================================

export const hitTarget = {
  mobile:  44,  // px — WCAG 2.2 minimum
  desktop: 32,  // px — pointer-input minimum
} as const;