Problem Solving & Design 84

Polished dark-theme single-page layout with a two-column grid, responsive breakpoint, and clear visual hierarchy that fits the chore wheel problem well.

• +Two-column `grid-template-columns:1fr 1fr` layout with `@media (max-width:768px)` collapse to single column — responsive viewport meta tag present
• +Color-coded wheel segments via cycling `COLOR_PALETTE` (10 colors), reassigned dynamically on add/remove so each segment is visually distinct
• +Winner banner with uppercase label, large `1.75rem` chore name, and subtle surface card treatment provides clear result communication
• +Pointer SVG triangle above wheel at `top:-12px` gives an obvious landing indicator
• +Empty-state message `Add chores to spin` shown inside wheel area when list is empty
• -Wheel labels use dark `color:#111` text on potentially dark segment colors (e.g. `#277DA1`, `#577590`), risking legibility
• -Done list items show color dots but no timestamp or other context to distinguish multiple completed chores

Completeness 90

All five brief requirements are implemented and wired end-to-end in a clean single-page app with no backend.

• +Add chore via input+button and keyboard Enter, wired through `ChoreWheel.addChore` with trimming
• +Remove chore per-item via `removeChore`, list updates reactively via subscriber pattern
• +Spin button triggers CSS `transform:rotate` transition with `cubic-bezier` easing, duration 1800ms within the 1–2s brief requirement
• +Winner banner displayed via `winnerBanner.hidden=false` after spin settles, showing chore name prominently
• +Mark-done via `ChoreWheel.markDone` moves chore to `doneList`, rendered separately in Done section for the session

Technical Craft 85

Clean separation between a pure logic module and a thin DOM glue layer, with correct spin-angle math, XSS escaping, and no committed secrets.

• +Logic layer (`logic.js`) is a pure factory with no DOM access; subscriber pattern cleanly decouples state from rendering
• +Cumulative rotation tracking (`cumulativeRotation`) prevents wheel snapping backward on repeated spins — correct geometric solution
• +`escapeHTML` using `textContent`/`innerHTML` round-trip guards against XSS in user-supplied chore names
• +Spin target angle calculation `(360 - winnerCenterDeg) % 360` plus `currentMod` diff is mathematically correct for pointer-at-top alignment
• +No build tooling needed; vanilla JS with version-busted `?v=2` cache params — appropriate for brief's no-backend requirement
• -No input length cap on chore names; very long strings could visually break the wheel label (truncated via CSS but still accepted into state)
• -`isSpinning` flag is reset via `setTimeout` in `logic.js` independently of the CSS transition end in `app.js`, creating a small timing coupling assumption
• -No deduplication check — identical chore names can be added multiple times silently