{
  "params": {
    "shell": {
      "type": "choice",
      "options": [
        "shore",
        "blue",
        "ghost",
        "lava"
      ],
      "default": "shore",
      "label": "Shell",
      "describe": "shore (classic red-orange), blue (blue crab with orange claw tips), ghost (pale sand crab), lava (black with glowing orange claws)."
    },
    "clawSize": {
      "type": "range",
      "min": 0.6,
      "max": 2,
      "step": 0.05,
      "default": 1,
      "label": "Claw size",
      "describe": "Scales both claws. Above 1.5 gives a fiddler-crab or boss look."
    },
    "size": {
      "type": "range",
      "min": 0.5,
      "max": 4,
      "step": 0.1,
      "default": 1,
      "label": "Size",
      "describe": "Uniform scale. 1 is a 40 cm crab; 4 is a giant enemy crab."
    },
    "spikes": {
      "type": "toggle",
      "default": false,
      "label": "Spikes",
      "describe": "Adds a row of spines along the front and side rim of the shell."
    }
  },
  "presets": {
    "giant enemy crab": {
      "size": 3.5,
      "clawSize": 1.6,
      "spikes": true,
      "shell": "lava"
    }
  },
  "night": {
    "claw": {
      "zone": "claw",
      "intensity": 0.8,
      "describe": "Only meaningful on lava: claws glow."
    }
  }
}