{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://deckyard.app/schema/v3/slide-types/image-slide.schema.json",
  "title": "image-slide slide content",
  "type": "object",
  "properties": {
    "title": {
      "type": "string",
      "maxLength": 80,
      "title": "Title"
    },
    "subheading": {
      "type": "string",
      "maxLength": 140,
      "title": "Subheading"
    },
    "bottomSubheading": {
      "type": "string",
      "maxLength": 200,
      "title": "Bottom subheading"
    },
    "image": {
      "type": "string",
      "title": "Image"
    },
    "alt": {
      "type": "string",
      "maxLength": 180,
      "title": "Alt text"
    },
    "imageRole": {
      "type": "string",
      "enum": [
        "content",
        "decorative",
        ""
      ],
      "title": "Image role"
    },
    "caption": {
      "type": "string",
      "maxLength": 160,
      "title": "Caption"
    },
    "focusX": {
      "anyOf": [
        {
          "type": "number",
          "minimum": 0,
          "maximum": 100
        },
        {
          "const": ""
        }
      ],
      "title": "Focus X",
      "description": "Only used in cropped layouts. 0 = left, 50 = center, 100 = right."
    },
    "focusY": {
      "anyOf": [
        {
          "type": "number",
          "minimum": 0,
          "maximum": 100
        },
        {
          "const": ""
        }
      ],
      "title": "Focus Y",
      "description": "Only used in cropped layouts. 0 = top, 50 = center, 100 = bottom."
    },
    "fit": {
      "type": "string",
      "enum": [
        "cover",
        "contain",
        ""
      ],
      "title": "Image fit"
    },
    "bleed": {
      "anyOf": [
        {
          "type": "boolean"
        },
        {
          "const": ""
        }
      ],
      "title": "Edge-to-edge"
    },
    "layout": {
      "type": "string",
      "enum": [
        "full",
        "bleed",
        "centered",
        ""
      ],
      "title": "Layout"
    },
    "background": {
      "type": "string",
      "title": "Background"
    },
    "zoomSteps": {
      "type": "string",
      "enum": [
        "",
        "corners",
        "horizontal",
        "vertical",
        "quadrants",
        "custom"
      ],
      "title": "Zoom steps",
      "description": "Enable step-through zoom regions during presentation."
    },
    "zoomLevel": {
      "anyOf": [
        {
          "type": "number",
          "minimum": 1.2,
          "maximum": 5
        },
        {
          "const": ""
        }
      ],
      "title": "Zoom level",
      "description": "Zoom magnification (default: 2x). Higher = more zoom."
    },
    "zoomPositions": {
      "type": "string",
      "maxLength": 500,
      "title": "Custom zoom positions",
      "description": "Custom positions as JSON array. X/Y are percentages (0-100)."
    },
    "a11yTitle": {
      "type": "string",
      "maxLength": 140,
      "title": "Accessibility title",
      "description": "Optional. Screen readers announce this when the slide becomes active. Prefer a short, descriptive phrase."
    },
    "a11ySummary": {
      "type": "string",
      "maxLength": 280,
      "title": "Accessibility summary",
      "description": "Optional extra context for screen readers (announced after the title). Keep it brief."
    },
    "slideBgImage": {
      "type": "string",
      "title": "Background image",
      "description": "Optional. Fills the whole slide behind the content. Large images are resized automatically; use the focus control to pick which part stays visible when cropped."
    },
    "slideBgFit": {
      "type": "string",
      "enum": [
        "cover",
        "contain",
        ""
      ],
      "title": "Background fit"
    },
    "slideBgFocusX": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "const": ""
        }
      ],
      "title": "Background focus X"
    },
    "slideBgFocusY": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "const": ""
        }
      ],
      "title": "Background focus Y"
    },
    "slideBgOverlay": {
      "type": "string",
      "enum": [
        "auto",
        "none",
        "light",
        "dark",
        "gradient-top",
        "gradient-bottom",
        ""
      ],
      "title": "Background overlay",
      "description": "Auto adds a subtle scrim only when the image is too busy for readable text. Gradient options darken one edge behind the text."
    },
    "slideBgText": {
      "type": "string",
      "enum": [
        "auto",
        "light",
        "dark",
        ""
      ],
      "title": "Text colour",
      "description": "Auto picks the theme text colour with the best contrast for the background image. Light/dark force it. (Legacy \"default\" is treated as the theme default.)"
    },
    "slideLogo": {
      "type": "string",
      "enum": [
        "none",
        "top-right",
        ""
      ],
      "title": "Theme logo",
      "description": "Show the active theme logo in a corner of this slide."
    }
  },
  "additionalProperties": true
}