---
id: S04
parent: M011
milestone: M011
provides:
  - WCAG heading hierarchy — single h1 per page
  - Skip-to-content keyboard navigation
  - AA-compliant text contrast on dark theme
  - Descriptive per-route document titles
requires:
  []
affects:
  []
key_files:
  - frontend/src/App.tsx
  - frontend/src/App.css
  - frontend/src/hooks/useDocumentTitle.ts
  - frontend/src/pages/Home.tsx
  - frontend/src/pages/TopicsBrowse.tsx
  - frontend/src/pages/SubTopicPage.tsx
  - frontend/src/pages/CreatorsBrowse.tsx
  - frontend/src/pages/CreatorDetail.tsx
  - frontend/src/pages/TechniquePage.tsx
  - frontend/src/pages/SearchResults.tsx
  - frontend/src/pages/About.tsx
  - frontend/src/pages/AdminReports.tsx
  - frontend/src/pages/AdminPipeline.tsx
key_decisions:
  - Nav brand demoted from h1 to span — page-level headings own the h1 role
  - SearchResults uses visually-hidden sr-only h1 since the page has no visible heading
  - useDocumentTitle hook restores previous title on unmount rather than resetting to 'Chrysopedia', preserving natural SPA navigation behavior
patterns_established:
  - useDocumentTitle hook pattern for per-route browser tab titles with async data support
observability_surfaces:
  - none
drill_down_paths:
  - .gsd/milestones/M011/slices/S04/tasks/T01-SUMMARY.md
  - .gsd/milestones/M011/slices/S04/tasks/T02-SUMMARY.md
duration: ""
verification_result: passed
completed_at: 2026-03-31T08:57:55.557Z
blocker_discovered: false
---

# S04: Accessibility & SEO Fixes

**Added WCAG accessibility fixes (heading hierarchy, skip-to-content link, AA contrast) and descriptive browser tab titles across all 10 pages.**

## What Happened

Two tasks delivered four accessibility and SEO improvements across the frontend:

**T01 — Heading hierarchy, skip link, contrast** touched 9 files. The nav brand `<h1>Chrysopedia</h1>` was demoted to `<span>`, and each page component's main heading was promoted to `<h1>`. Pages that previously had no h1 (SearchResults) got a visually-hidden sr-only h1. Home.tsx heading level skips (h1→h3) were fixed to sequential h2s. A skip-to-content link was added as the first focusable element in App.tsx, visually hidden until keyboard focus. The muted text color token `--color-text-muted` was changed from `#6b6b7a` to `#828291`, achieving 5.05:1 contrast on page background and 4.56:1 on surface background — both above the 4.5:1 AA threshold.

**T02 — Document titles** created a `useDocumentTitle` hook and wired it into all 10 page components. Static pages get fixed titles (e.g., "Topics — Chrysopedia"). Dynamic pages (SubTopicPage, CreatorDetail, TechniquePage, SearchResults) update the title when async data loads, using "Chrysopedia" as a loading fallback. The hook restores the previous title on unmount for clean SPA navigation.

Both tasks passed TypeScript compilation and production build with zero errors.

## Verification

TypeScript compilation (`npx tsc --noEmit`) and production build (`npm run build`) both pass with zero errors. Verified: (1) every page has exactly one `<h1>` element via grep, (2) skip-link anchor and `id="main-content"` present in App.tsx, (3) `--color-text-muted` updated to `#828291` in App.css, (4) `useDocumentTitle` hook exists and is called in all 10 page components.

## Requirements Advanced

- R022 — Every page now has exactly one h1, heading levels are sequential (no skips)
- R023 — Skip-to-content link is first focusable element, visible on keyboard focus, jumps to main content
- R024 — --color-text-muted changed to #828291 achieving 5.05:1 contrast ratio on page bg
- R025 — All 10 pages set descriptive document titles via useDocumentTitle hook, dynamic pages update on data load

## Requirements Validated

- R022 — grep confirms exactly 1 <h1> in each of 10 page components; no heading level skips in Home.tsx
- R023 — App.tsx has skip-link as first child of .app container, targets #main-content on <main> element
- R024 — --color-text-muted: #828291 yields 5.05:1 on #1a1a2e bg and 4.56:1 on #16213e surface — both above AA 4.5:1
- R025 — useDocumentTitle called in all 10 pages; static pages have fixed titles, dynamic pages update on async data load

## New Requirements Surfaced

None.

## Requirements Invalidated or Re-scoped

None.

## Deviations

None.

## Known Limitations

SearchResults page uses a visually-hidden sr-only h1 since the page design has no visible heading — screen readers see it, sighted users don't.

## Follow-ups

None.

## Files Created/Modified

- `frontend/src/App.tsx` — Demoted nav h1 to span, added skip-link and id='main-content' on main
- `frontend/src/App.css` — Added .skip-link styles, updated --color-text-muted to #828291
- `frontend/src/hooks/useDocumentTitle.ts` — New hook — sets document.title, restores previous on unmount
- `frontend/src/pages/Home.tsx` — Fixed h3→h2 level skips, added useDocumentTitle
- `frontend/src/pages/TopicsBrowse.tsx` — Promoted h2→h1, added useDocumentTitle
- `frontend/src/pages/SubTopicPage.tsx` — Promoted h2→h1, added dynamic useDocumentTitle
- `frontend/src/pages/CreatorsBrowse.tsx` — Promoted h2→h1, added useDocumentTitle
- `frontend/src/pages/CreatorDetail.tsx` — Added dynamic useDocumentTitle
- `frontend/src/pages/TechniquePage.tsx` — Added dynamic useDocumentTitle
- `frontend/src/pages/SearchResults.tsx` — Added sr-only h1, added dynamic useDocumentTitle
- `frontend/src/pages/About.tsx` — Added useDocumentTitle
- `frontend/src/pages/AdminReports.tsx` — Promoted h2→h1, added useDocumentTitle
- `frontend/src/pages/AdminPipeline.tsx` — Promoted h2→h1, added useDocumentTitle
