{
  "$schema": "https://www.digitaltableteur.com/schemas/contract-spec/1.0/contract.schema.json",
  "specVersion": "1.0",
  "name": "ProofBlock",
  "status": "stable",
  "description": "Metrics band that presents headline numbers with labels under a required title and an optional subtitle and caption, with tight spacing and dark metric cards.",
  "props": {
    "ariaLabel": {
      "type": "string",
      "optional": true,
      "description": "Accessible name for the proof section landmark."
    },
    "title": {
      "type": "string",
      "optional": false,
      "description": "Section heading."
    },
    "subTitle": {
      "type": "string",
      "optional": true,
      "description": "Supporting line under the title."
    },
    "caption": {
      "type": "string",
      "optional": true,
      "description": "Small print in the header, beside the title block and above the metrics\ngrid (source, timeframe)."
    },
    "metrics": {
      "type": "ProofMetric[]",
      "optional": false,
      "description": "Proof metrics: value + label pairs."
    },
    "tight": {
      "type": "boolean",
      "optional": true,
      "description": "Tighten the gap between metric cards. The band padding is unchanged."
    },
    "dark": {
      "type": "boolean",
      "optional": true,
      "description": "Apply the dark treatment to each metric card. The section band itself is\nunchanged."
    },
    "className": {
      "type": "string",
      "optional": true,
      "description": "Additional CSS classes on the section."
    }
  },
  "accessibility": {
    "criteria": [
      {
        "id": "axe-no-violations",
        "statement": "Required stories produce no axe violations at the configured severity.",
        "verification": "automated",
        "wcag": [
          "2.5.8"
        ],
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            "passed": true,
            "runner": "local-recapture"
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            "passed": true,
            "runner": "local-recapture"
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            "passed": true,
            "runner": "local-recapture"
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        "statement": "The accessibility tree (role, name, state) matches the committed snapshot for every required story.",
        "verification": "automated",
        "wcag": [
          "1.3.1",
          "4.1.2"
        ],
        "check": "npm run test:stories:matrix:ci",
        "evidence": [
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            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:46:31.308Z",
            "passed": true,
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            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:17:12.119Z",
            "passed": true,
            "runner": "local-recapture"
          },
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            "capturedAt": "2026-11-03T22:29:07.061Z",
            "passed": true,
            "runner": "local-recapture"
          }
        ]
      },
      {
        "id": "forced-colors-real-browser",
        "statement": "The component remains legible and operable under a real browser forced-colors: active pass.",
        "verification": "automated",
        "check": "npm run test:stories:hc",
        "evidence": [
          {
            "artifact": "../../../nextjs-app/shared/patterns/ProofBlock/__a11y-evidence__/patterns-proofblock-default.forced-colors.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:46:31.308Z",
            "passed": true,
            "runner": "local-recapture"
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            "capturedAt": "2026-11-03T22:46:31.856Z",
            "passed": true,
            "runner": "local-recapture"
          },
          {
            "artifact": "../../../nextjs-app/shared/patterns/ProofBlock/__a11y-evidence__/patterns-proofblock-forced-colors.forced-colors.json",
            "sourceCommit": "930c562b591b6d9967e1e8c214899052624d9a2f",
            "capturedAt": "2026-11-03T22:46:32.121Z",
            "passed": true,
            "runner": "local-recapture"
          },
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            "capturedAt": "2026-11-03T22:46:31.578Z",
            "passed": true,
            "runner": "local-recapture"
          }
        ]
      },
      {
        "id": "aria-requirements",
        "statement": "Documented ARIA roles, states, and properties are present on the rendered output.",
        "verification": "unverified",
        "wcag": [
          "4.1.2"
        ],
        "note": "No exportable evidence record for this check; re-run the check to capture one."
      },
      {
        "id": "human-a11y-review",
        "statement": "A human completed an end-to-end accessibility review of this component.",
        "verification": "manual",
        "note": "2026-05-28 — Promoted from alpha: Example + ForcedColors stories present; Storybook axe gate enabled. 2026-07-09 — Promoted beta→stable: AT snapshots captured for all required stories (base mode, pattern-tier convention), forced-colors re-verified in a real browser, consumers audited.",
        "reviewedAt": "2026-11-04"
      }
    ]
  },
  "governance": {
    "owner": "design-system",
    "lastReviewed": "2026-11-04",
    "note": "Reviewed by Petri Lahdelma; prepared by Claude from a code review on 2026-11-03"
  },
  "source": [
    "../../../nextjs-app/shared/patterns/ProofBlock/ProofBlock.module.css",
    "../../../nextjs-app/shared/patterns/ProofBlock/ProofBlock.tsx"
  ]
}