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gurix 145c824eaa docs(04-02): complete visual polish plan
- Add 04-02-SUMMARY.md with animation and error handler results
- Update STATE.md with progress, decisions, metrics
- Update ROADMAP.md with plan progress
- Mark PLSH-01 through PLSH-05 complete in REQUIREMENTS.md
2026-03-29 18:17:34 +02:00

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---
phase: 04-polish-audio
plan: 02
subsystem: ui
tags: [css-animations, responsive, error-handling, accessibility]
# Dependency graph
requires:
- phase: 03-gameplay
provides: "Lesson screen with falling letters, forest scene, companion area"
provides:
- "Leaf-fall sinusoidal sway animation replacing letter-float"
- "Stardust CSS particles on correct keypress dissolve"
- "Companion avatar float animation"
- "prefers-reduced-motion accessibility support"
- "Responsive layout down to 700px"
- "Global error handler with child-friendly overlay"
affects: []
# Tech tracking
tech-stack:
added: []
patterns: ["CSS pseudo-element particles", "prefers-reduced-motion media query", "global error overlay pattern"]
key-files:
created: []
modified:
- src/styles/main.css
- src/main.ts
- index.html
key-decisions:
- "Stardust particles use box-shadow on pseudo-elements for 6 total sparkle points"
- "Error overlay uses tree emoji and German child-friendly message"
patterns-established:
- "CSS-only particle effects via ::before/::after pseudo-elements with box-shadow"
- "Global error/unhandledrejection handlers at top of main.ts entry point"
requirements-completed: [PLSH-01, PLSH-02, PLSH-03, PLSH-04, PLSH-05]
# Metrics
duration: 2min
completed: 2026-03-29
---
# Phase 04 Plan 02: Visual Polish Summary
**Leaf-fall sway animation, stardust particles, companion float, responsive to 700px, and global error overlay with child-friendly message**
## Performance
- **Duration:** 2 min
- **Started:** 2026-03-29T16:14:45Z
- **Completed:** 2026-03-29T16:16:47Z
- **Tasks:** 2
- **Files modified:** 3
## Accomplishments
- Replaced letter-float with sinusoidal leaf-fall animation (lateral sway + vertical descent)
- Added stardust CSS particles on .falling-letter--dissolve via ::before/::after pseudo-elements with box-shadow sparkle
- Added companion-float animation for gentle avatar bobbing
- Added prefers-reduced-motion media query disabling all animations
- Added responsive styles at 700px (smaller keys, scaled fonts, adjusted grids)
- Added global error handler catching uncaught exceptions with kindgerechtes overlay
## Task Commits
Each task was committed atomically:
1. **Task 1: Enhanced CSS animations + responsive layout** - `3a79379` (feat)
2. **Task 2: Global error handler + error overlay** - `f3cb948` (feat)
## Files Created/Modified
- `src/styles/main.css` - Leaf-fall, stardust, companion-float keyframes; error overlay styles; reduced-motion + responsive media queries
- `src/main.ts` - Global error + unhandledrejection event listeners
- `index.html` - Error overlay div with tree icon, message, and reload button
## Decisions Made
- Stardust particles use box-shadow on pseudo-elements for 6 total sparkle points (efficient, pure CSS)
- Error overlay uses tree emoji and German child-friendly message ("Oh, der Wald braucht kurz eine Pause...")
## Deviations from Plan
None - plan executed exactly as written.
## Issues Encountered
None
## User Setup Required
None - no external service configuration required.
## Next Phase Readiness
- All visual polish complete (animations, responsive, error handling)
- Ready for remaining Phase 04 plans (audio, export/import)
---
*Phase: 04-polish-audio*
*Completed: 2026-03-29*