{
  "_about": "Rechner tokens from replica/rechner/screens/ref-01..07 (light, dark, Material You). Fallback palette; on Android 12+ dynamic colour drives the key roles. Check: python3 ~/.claude/skills/replica-design/contrast.py replica/rechner/design/tokens.json",
  "color": {
    "bg": "#f9f9ff", "display": "#e1e5ee", "sheet": "#e8ebf2",
    "text": "#191c20", "text-muted": "#43474e", "result": "#5a5f68",
    "key-digit": "#eef0f5", "on-key-digit": "#191c20",
    "key-op": "#d6e3f5", "on-key-op": "#0e1d2e",
    "key-ac": "#ead9ff", "on-key-ac": "#25113d",
    "key-eq": "#cde3fb", "on-key-eq": "#06233d",
    "key-fn": "#dde3ec", "on-key-fn": "#191c20",
    "error": "#ba1a1a",
    "dark-bg": "#0b1414", "dark-display": "#283535", "dark-sheet": "#1e2a2a",
    "dark-text": "#e0e6e6", "dark-text-muted": "#bec8c8", "dark-result": "#9fb0b0",
    "dark-key-digit": "#172121", "dark-on-key-digit": "#dde4e4",
    "dark-key-op": "#a3d1d3", "dark-on-key-op": "#002f31",
    "dark-key-ac": "#8fd5e8", "dark-on-key-ac": "#00303b",
    "dark-key-eq": "#00e0cc", "dark-on-key-eq": "#00332e",
    "dark-key-fn": "#253232", "dark-on-key-fn": "#dde4e4",
    "dark-error": "#ffb4ab"
  },
  "pairs": [
    ["text","display"],["text-muted","display"],["result","display"],["text","sheet"],["text-muted","sheet"],["text","bg"],
    ["on-key-digit","key-digit"],["on-key-op","key-op"],["on-key-ac","key-ac"],["on-key-eq","key-eq"],["on-key-fn","key-fn"],["error","display"],
    ["dark-text","dark-display"],["dark-text-muted","dark-display"],["dark-result","dark-display"],["dark-text","dark-sheet"],["dark-text-muted","dark-sheet"],["dark-text","dark-bg"],
    ["dark-on-key-digit","dark-key-digit"],["dark-on-key-op","dark-key-op"],["dark-on-key-ac","dark-key-ac"],["dark-on-key-eq","dark-key-eq"],["dark-on-key-fn","dark-key-fn"],["dark-error","dark-display"]
  ],
  "font": {"sans": "Roboto Flex (OFL)", "display": "Roboto Flex, weight 400, tabular figures for expression and result"},
  "type": {
    "label": {"size": 14, "line": 20, "weight": 500},
    "body": {"size": 16, "line": 24, "weight": 400},
    "fn": {"size": 22, "line": 28, "weight": 400},
    "key": {"size": 34, "line": 40, "weight": 400},
    "result": {"size": 36, "line": 44, "weight": 400},
    "expr": {"size": 72, "line": 80, "weight": 400},
    "expr-min": {"size": 36, "line": 44, "weight": 400},
    "history-expr": {"size": 18, "line": 24, "weight": 400},
    "history-result": {"size": 28, "line": 34, "weight": 400}
  },
  "space": [0, 4, 8, 12, 16, 24, 32],
  "radius": {"display": 32, "key": 999, "key-pressed": 24, "menu": 24, "pill": 999},
  "layout": {"key-gap": 12, "gutter": 16, "keypad-cols": 4, "display-min-height": "35%"},
  "motion": {"key-press": "spring dampingRatio 0.6 stiffness 800 (circle -> squircle)", "sheet": "spring 0.9 / 400"}
}