docs: add WCAG 2.2 AAA accessibility remediation design
Covers 147 issues across 8 sections: CSS foundation, modal system, keyboard access, ARIA live regions, semantic structure, DOCX output, template contrast validation, and miscellaneous fixes.
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TypoGenie
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docs/plans/2026-02-18-wcag-aaa-accessibility-design.md
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# WCAG 2.2 AAA Accessibility Remediation Design
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**Date:** 2026-02-18
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**Status:** Approved
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**Scope:** 147 accessibility issues across 17 existing files, 3 new files
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## Decisions
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| Decision | Choice |
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|----------|--------|
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| Visual approach | Balance accessibility with dark aesthetic |
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| Modals | Native `<dialog>` element |
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| Style cards | Listbox pattern with existing `useFocusableList` hook |
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| Template colors | Runtime contrast validation only, no JSON template edits |
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| Justified text | Override to `left` at render time |
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| Contrast enforcement | Auto-correct via `ensureContrast()` utility at render time |
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## Section 1: CSS Foundation (~25 issues)
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### Root font size
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Change `:root { font-size: 16px }` to `font-size: 100%` in `index.css` so user browser preferences are respected.
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### Overflow
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Remove `overflow: hidden` from `body` and `#root`. Replace with `overflow-x: hidden` to prevent horizontal scroll but allow vertical content access when zoomed to 200%.
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### Focus indicators
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Replace `rgba(99, 102, 241, 0.3)` focus ring with `rgba(99, 102, 241, 0.8)` at 2px. Meets 3:1 contrast on dark backgrounds while fitting indigo theme.
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### Reduced motion
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Add global CSS rule:
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```css
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@media (prefers-reduced-motion: reduce) {
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*, *::before, *::after {
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animation-duration: 0.01ms !important;
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animation-iteration-count: 1 !important;
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transition-duration: 0.01ms !important;
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scroll-behavior: auto !important;
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}
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}
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```
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### Forced colors
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Add `@media (forced-colors: active)` rules for Windows High Contrast Mode compatibility.
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### Color replacements
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Across all components: `text-zinc-600` -> `text-zinc-400`, `text-zinc-500` -> `text-zinc-400`. All text hits 7:1+ contrast on zinc-950. Keeps dark aesthetic.
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## Section 2: Modal System (~20 issues)
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### New `src/hooks/useDialog.ts`
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Reusable hook wrapping native `<dialog>`:
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- Manages `dialogRef`, `showModal()`/`close()`
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- Restores focus to trigger element on close
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- Wires `aria-labelledby`
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- Framer Motion animations on inner content div
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### KeyboardShortcutsHelp (App.tsx)
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Convert from `motion.div` overlay to `<dialog>`. Add `aria-labelledby` to heading. Close button gets `aria-label="Close shortcuts"`. Escape/focus trap handled natively.
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### ExportOptionsModal
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Same `<dialog>` conversion. Radio buttons wrapped in `<fieldset><legend>`. Close button labeled.
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### StylePreviewModal
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Same `<dialog>` conversion. Close button labeled. Iframe HTML gets `lang="en"`.
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### Animation approach
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`dialog[open]` CSS selector for entrance. `::backdrop` gets fade-in. Framer Motion on inner content for exit.
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## Section 3: Keyboard Access & Interactive Elements (~20 issues)
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### Logo button
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Replace `<motion.div onClick>` with `<motion.button aria-label="TypoGenie - Reset to home">`.
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### Single-character shortcut
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Scope `?`/`/` listener to only fire when `document.activeElement` is body or non-input element. Prevents intercepting typing in search.
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### Style cards as listbox
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Container: `role="listbox"` + `aria-label="Typography styles"`. Each card: `role="option"` + `tabIndex` + `aria-selected` + `onKeyDown`. Wire `useFocusableList` for arrow keys. Add `:focus-visible` indigo ring.
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### Favorite button
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Add `aria-label` (dynamic: "Add to favorites"/"Remove from favorites") + `aria-pressed`.
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### Category filters
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Wrap in `<div role="group" aria-label="Filter by category">`. Active button: `aria-pressed="true"`.
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### Paper size buttons
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Wrap in `<div role="group" aria-label="Paper size">`. Active button: `aria-pressed="true"`.
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### Search input
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Add `aria-label="Search templates"` + `aria-describedby` pointing to live result count region.
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### Icon-only buttons
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Add `aria-label` to all: zoom buttons, external link (Preview), close buttons. Decorative icons next to text: `aria-hidden="true"`.
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### Target sizes
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Increase padding on small buttons to hit 44x44px minimum. Use `min-w-[44px] min-h-[44px]` with centered content where inline growth not possible.
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## Section 4: ARIA Live Regions & Status Announcements (~15 issues)
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### Root status region
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Persistent `<div role="status" aria-live="polite" className="sr-only">` in App.tsx root. Updated on `appState` changes.
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### Generating state
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Add `aria-busy="true"` + `role="status"` to container.
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### Preview loading
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Wrap "Loading..." in `role="status"`.
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### Success message
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`aria-live="polite"` on button text area for "Saved!" announcement.
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### Search results
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Visually-hidden `role="status"` announcing "{N} templates found". Debounced 300ms.
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### Error fixes
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- Remove `aria-live="polite"` where `role="alert"` already set (implies assertive)
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- Remove 5-second auto-dismiss from FileUpload error
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- Add `aria-describedby` linking FileUpload error to dropzone
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- Template loading: `role="status"`. Template error: `role="alert"`
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### Loading state
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Replace `return null` with minimal `<div role="status">Loading TypoGenie</div>`.
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## Section 5: Semantic Structure & Landmarks (~15 issues)
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### Skip navigation
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`<a href="#main-content" class="sr-only focus:not-sr-only">Skip to main content</a>` in index.html.
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### Page title
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`<title>TypoGenie - Markdown to Word Converter</title>`
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### Noscript
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`<noscript><p>TypoGenie requires JavaScript to run.</p></noscript>`
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### Landmarks
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- `id="main-content"` on `<main>` in both app states
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- `<nav aria-label="Style filters">` around category buttons
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- `<section aria-label="Style list">` and `<section aria-label="Style preview">` in StyleSelector
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### Progress stepper
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Wrap in `<nav aria-label="Progress"><ol>`. Active step: `aria-current="step"`.
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### Shortcuts list
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Convert to `<dl>` with `<dt>`/`<dd>`.
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### Decorative elements
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`aria-hidden="true"` on blob backgrounds, window-chrome dots, visual dividers.
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### Iframe lang
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Both Preview.tsx and StylePreviewModal.tsx: inject `<html lang="en">`.
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## Section 6: DOCX Output Accessibility (~8 issues)
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### Document metadata
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Add `title` (from filename/first h1), `description`, `language` to Document constructor.
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### Image handling
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New `<img>` handler producing `[Image: {alt text}]` placeholder paragraph in italic.
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### Table headers
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Set `tableHeader: true` on `TableRow` containing `<th>` elements.
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### Heading preservation in table mode
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Add `HeadingLevel` to paragraph inside `processHeaderAsTable` table cells.
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### Code block style
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Add custom "Code" paragraph style to DOCX styles. Apply to code blocks.
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## Section 7: Template Contrast Validation (~20 issues)
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### New `src/utils/contrastUtils.ts`
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- `hexToRgb(hex)` - parse hex to RGB
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- `relativeLuminance(rgb)` - WCAG luminance formula
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- `contrastRatio(color1, color2)` - ratio calculation
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- `ensureContrast(fg, bg, minRatio)` - auto-correct foreground color until ratio met
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### Integration in templateRenderer.ts
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Run `ensureContrast()` on every text/background pair at CSS generation time. Body text: 7:1. Large text (18pt+ or 14pt+ bold): 4.5:1.
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### `del` element fix
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When resolving `del` color, if `border` palette color fails contrast, fall back to `textSecondary`.
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### Justified text
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Override `justify` to `left` at render time (1.4.8 AAA prohibits justified text).
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### Line-height floor
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Enforce minimum 1.5 for body text, 1.0 for headings. Clamp upward if template specifies lower.
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## Section 8: Remaining Miscellaneous (~10 issues)
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### Iframe keyboard
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`tabIndex={-1}` on preview iframe in StyleSelector (passive preview, not interactive).
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### Error boundary
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New `src/components/ErrorBoundary.tsx` wrapping `<App />`. Renders accessible error with `role="alert"` on crash.
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### Framer Motion reduced motion
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Import `useReducedMotion` from `motion/react` in App.tsx. When true, disable infinite blob/gradient animations via conditional animate props.
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### Hidden buttons on small screens
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Add always-visible `<kbd>?</kbd>` hint regardless of breakpoint.
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### Truncation
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Add `title` attribute with full description on `line-clamp-2` elements.
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## Files Modified (17)
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`index.html`, `src/index.css`, `src/App.tsx`, `src/main.tsx`, `src/components/StyleSelector.tsx`, `src/components/Preview.tsx`, `src/components/ExportOptionsModal.tsx`, `src/components/StylePreviewModal.tsx`, `src/components/FileUpload.tsx`, `src/hooks/useSettings.ts`, `src/hooks/useTemplates.ts`, `src/services/templateRenderer.ts`, `src/utils/docxConverter.ts`, `src/utils/fontUtils.ts`
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## Files Created (3)
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`src/utils/contrastUtils.ts`, `src/hooks/useDialog.ts`, `src/components/ErrorBoundary.tsx`
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