[
  {
    "nodeId": "light-on-light",
    "category": "invisible-container",
    "severity": "warning",
    "property": "stroke",
    "currentValue": null,
    "suggestedValue": {
      "thickness": 1,
      "fill": [
        {
          "type": "solid",
          "color": "#E2E8F0"
        }
      ]
    },
    "reason": "same fill as parent (#FFFFFF ≈ #FFFFFF, contrast=1.00)"
  },
  {
    "nodeId": "dark-on-dark",
    "category": "invisible-container",
    "severity": "info",
    "property": "stroke",
    "currentValue": null,
    "suggestedValue": {
      "thickness": 1,
      "fill": [
        {
          "type": "solid",
          "color": "#E2E8F0"
        }
      ]
    },
    "reason": "same fill as parent (#0A0A0A ≈ #0A0A0A, contrast=1.00)"
  }
]
