{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://apievangelist.com/schemas/vitepress/vitepress-frontmatter.json",
  "title": "VitePress Page Frontmatter",
  "description": "Schema for YAML frontmatter in VitePress Markdown pages. Frontmatter allows per-page overrides of site-level and theme-level configuration, as well as page-specific settings like layout, hero content, and feature lists. Frontmatter is defined in the YAML block at the top of a Markdown file between triple-dash delimiters.",
  "type": "object",
  "properties": {
    "title": {
      "type": "string",
      "description": "Override the page title. Overrides the site-level title config for this page."
    },
    "titleTemplate": {
      "oneOf": [
        { "type": "string" },
        { "type": "boolean" }
      ],
      "description": "Override the title suffix template for this page. Set to false to disable the title suffix."
    },
    "description": {
      "type": "string",
      "description": "Override the page description meta tag. Overrides the site-level description for this page."
    },
    "head": {
      "type": "array",
      "description": "Additional head tags to inject for this page, appended after site-level head tags.",
      "items": {
        "type": "array",
        "description": "A head element tuple: [tag, attributes] or [tag, attributes, innerHTML].",
        "minItems": 2,
        "maxItems": 3
      }
    },
    "layout": {
      "type": "string",
      "description": "The layout template to use for this page. 'doc' applies documentation styles, 'home' enables the landing page layout with hero and features, 'page' is a blank canvas without documentation styles.",
      "enum": ["doc", "home", "page"],
      "default": "doc"
    },
    "navbar": {
      "type": "boolean",
      "description": "Whether to display the navigation bar on this page.",
      "default": true
    },
    "sidebar": {
      "type": "boolean",
      "description": "Whether to display the sidebar navigation on this page.",
      "default": true
    },
    "aside": {
      "description": "Location of the aside/table-of-contents component. true=right, 'left'=left, false=hidden.",
      "oneOf": [
        { "type": "boolean" },
        { "type": "string", "enum": ["left"] }
      ],
      "default": true
    },
    "outline": {
      "description": "Which header levels to display in the page outline. Overrides the themeConfig.outline setting.",
      "oneOf": [
        { "type": "number", "minimum": 1, "maximum": 6 },
        {
          "type": "array",
          "minItems": 2,
          "maxItems": 2,
          "items": { "type": "number", "minimum": 1, "maximum": 6 }
        },
        { "type": "string", "enum": ["deep"] },
        { "type": "boolean", "enum": [false] }
      ]
    },
    "lastUpdated": {
      "description": "Whether to display the last updated timestamp on this page. Can be true/false or a specific date to override the git timestamp.",
      "oneOf": [
        { "type": "boolean" },
        { "type": "string", "format": "date" }
      ],
      "default": true
    },
    "editLink": {
      "type": "boolean",
      "description": "Whether to display the 'Edit this page' link on this page.",
      "default": true
    },
    "footer": {
      "type": "boolean",
      "description": "Whether to display the footer on this page.",
      "default": true
    },
    "pageClass": {
      "type": "string",
      "description": "Add a custom CSS class to the page container element for per-page styling."
    },
    "hero": {
      "$ref": "#/$defs/HeroConfig",
      "description": "Hero section configuration. Only applies when layout is 'home'."
    },
    "features": {
      "type": "array",
      "description": "Features section configuration. Only applies when layout is 'home'. Renders a grid of feature cards below the hero.",
      "items": { "$ref": "#/$defs/FeatureItem" }
    }
  },
  "$defs": {
    "HeroConfig": {
      "type": "object",
      "description": "Configuration for the home page hero section.",
      "properties": {
        "name": {
          "type": "string",
          "description": "The main name/brand text displayed prominently in the hero. Falls back to the site title if not set."
        },
        "text": {
          "type": "string",
          "description": "The hero tagline displayed below the name."
        },
        "tagline": {
          "type": "string",
          "description": "Additional subtext displayed below the main text."
        },
        "image": {
          "description": "An image displayed alongside the hero text. Can be a path string or an object with light/dark variants.",
          "oneOf": [
            { "type": "string" },
            {
              "type": "object",
              "properties": {
                "src": { "type": "string", "description": "Path to the hero image." },
                "alt": { "type": "string", "description": "Alt text for the hero image." },
                "light": { "type": "string", "description": "Path to the light mode hero image." },
                "dark": { "type": "string", "description": "Path to the dark mode hero image." }
              }
            }
          ]
        },
        "actions": {
          "type": "array",
          "description": "Call-to-action buttons displayed in the hero section.",
          "items": { "$ref": "#/$defs/HeroAction" }
        }
      }
    },
    "HeroAction": {
      "type": "object",
      "description": "A call-to-action button in the hero section.",
      "required": ["text", "link"],
      "properties": {
        "theme": {
          "type": "string",
          "description": "Visual style of the button.",
          "enum": ["brand", "alt"],
          "default": "brand"
        },
        "text": {
          "type": "string",
          "description": "Button label text."
        },
        "link": {
          "type": "string",
          "description": "URL the button links to."
        },
        "target": {
          "type": "string",
          "description": "HTML target attribute for the button link."
        },
        "rel": {
          "type": "string",
          "description": "HTML rel attribute for the button link."
        }
      }
    },
    "FeatureItem": {
      "type": "object",
      "description": "A feature card displayed in the features grid on the home page.",
      "required": ["title"],
      "properties": {
        "icon": {
          "description": "An emoji, image path, or object with light/dark image variants for the feature icon.",
          "oneOf": [
            { "type": "string" },
            {
              "type": "object",
              "properties": {
                "src": { "type": "string", "description": "Image path for the icon." },
                "alt": { "type": "string", "description": "Alt text for the icon image." },
                "light": { "type": "string", "description": "Image path for light mode icon." },
                "dark": { "type": "string", "description": "Image path for dark mode icon." },
                "width": { "type": "string", "description": "Width of the icon image." },
                "height": { "type": "string", "description": "Height of the icon image." }
              }
            }
          ]
        },
        "title": {
          "type": "string",
          "description": "The feature card title."
        },
        "details": {
          "type": "string",
          "description": "Descriptive text for the feature card."
        },
        "link": {
          "type": "string",
          "description": "URL to link to when the feature card is clicked."
        },
        "linkText": {
          "type": "string",
          "description": "Link text displayed at the bottom of the feature card."
        },
        "rel": {
          "type": "string",
          "description": "HTML rel attribute for the feature card link."
        },
        "target": {
          "type": "string",
          "description": "HTML target attribute for the feature card link."
        }
      }
    }
  }
}