{
  "params": {
    "category": {
      "type": "choice",
      "options": [
        "cans",
        "boxes",
        "bottles",
        "produce"
      ],
      "default": "boxes",
      "label": "Category",
      "describe": "What the gondola sells: cans (tins and drink cans, short ones stacked two high), boxes (cereal and dry goods), bottles (drinks bottles, jugs and cartons) or produce (tilted crates heaped with fruit and vegetables). The header colour follows the category."
    },
    "bays": {
      "type": "range",
      "min": 1,
      "max": 3,
      "step": 1,
      "default": 2,
      "label": "Bays",
      "describe": "Number of 1.25 m bays side by side, 1 to 3 (1.3 to 3.8 m long). Chain several assets for a long aisle."
    },
    "shelves": {
      "type": "range",
      "min": 2,
      "max": 4,
      "step": 1,
      "default": 4,
      "label": "Shelves",
      "describe": "Shelves above the base deck, 2 to 4. Height follows: 2 is a 1.3 m low unit, 4 a full 2 m gondola with header. Produce is always a low stand with two tilted tiers."
    },
    "unit": {
      "type": "choice",
      "options": [
        "white",
        "grey",
        "black",
        "wood"
      ],
      "default": "white",
      "label": "Unit",
      "describe": "Shelving finish: white (classic supermarket), grey, black (premium store) or wood (farm shop, deli)."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 99,
      "step": 1,
      "default": 3,
      "label": "Seed",
      "describe": "Shuffles which products, colours, sizes and facing widths fill each shelf. Same seed, same shelf."
    }
  },
  "presets": {
    "cereal aisle": {
      "category": "boxes",
      "bays": 3,
      "shelves": 4,
      "unit": "white",
      "seed": 3
    },
    "farm shop greens": {
      "category": "produce",
      "bays": 2,
      "shelves": 2,
      "unit": "wood",
      "seed": 8
    },
    "drinks wall": {
      "category": "bottles",
      "bays": 2,
      "shelves": 4,
      "unit": "black",
      "seed": 21
    }
  },
  "night": {
    "light": {
      "zone": "light",
      "color": "#fff3d6",
      "intensity": 1.1,
      "describe": "Shelf-edge light strips and the header light box glow."
    }
  }
}