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snowprint 325eeaf063 feat(spec): complete implementation plan for Halloween event page

Created comprehensive planning documentation following Spec-Kit standards:

Phase 0 - Research:
- Analyzed 10 technical decisions (HTML5, ASCII art, countdown, responsive design)
- Resolved edge cases (post-countdown, post-event, JS disabled, small screens)
- Documented rationale and alternatives for each decision

Phase 1 - Design:
- Defined 4 data entities (Event, Countdown, VisualTheme, Content)
- Created JSON schema contract for page content validation
- Mapped 35 functional requirements to implementation approach
- Generated quickstart testing checklist with 10 test categories

Technical decisions:
- Single-file HTML architecture (no external dependencies)
- Pure CSS animations (blinking cursor)
- JavaScript countdown with GMT+8 timezone handling
- Responsive ASCII art (desktop/mobile versions)
- WCAG 2.1 AA compliance (21:1 contrast ratio)

Constitution compliance: PASS
- No violations detected
- Follows user-centric, professional excellence principles
- Minimal technical stack aligns with simplicity requirement

Artifacts created:
- spec.md: 35 functional requirements
- plan.md: Implementation strategy and phases
- research.md: 10 technical research decisions
- data-model.md: 4 entity definitions with validation
- contracts/page-content.schema.json: JSON Schema
- quickstart.md: Comprehensive testing checklist

Ready for: /tasks command to generate tasks.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-10-04 19:20:25 +08:00

10 KiB

Raw Blame History

Research: McDonald's IT Halloween Event Page

Feature: Halloween event announcement webpage Date: 2025-10-04 Status: Complete

Research Summary

This document captures all research decisions made during the planning phase to resolve technical uncertainties and establish implementation approaches.

Technical Research

1. HTML5 Semantic Markup Best Practices

Question: How to structure a single-page event announcement for optimal accessibility?

Decision: Use semantic HTML5 elements (<header>, <main>, <section>, <footer>)

Rationale:

Improves accessibility and screen reader navigation
Better SEO (though not critical for internal event page)
Required for WCAG 2.1 AA compliance
Provides clear document structure without additional markup

Alternatives Considered:

Generic <div> elements: Rejected due to poor accessibility and lack of semantic meaning
<article> for main content: Rejected as event info is not article-style content

Implementation Notes:

Use <header> for title and ASCII logo
Use <main> for event details and countdown
Use <section> for logical content groups
Use <footer> for McDonald's IT Academy attribution

2. ASCII Art Rendering in HTML

Question: What's the best way to display ASCII art in HTML while preserving formatting?

Decision: Use <pre> tag with monospace font and UTF-8 encoding

Rationale:

<pre> preserves all whitespace and line breaks
Prevents browser from collapsing spaces
Works reliably across all browsers
Simple and performant

Alternatives Considered:

Canvas element: Rejected as overkill for static ASCII art; accessibility issues
CSS Grid: Rejected due to complexity of positioning each character
white-space: pre on div: Works but <pre> is semantically correct

Implementation Notes:

<pre aria-label="McDonald's Logo">
[ASCII art here]
</pre>

3. Responsive ASCII Art Techniques

Question: How to make ASCII art legible on mobile devices?

Decision: Provide two versions - desktop (detailed) and mobile (simplified), switched via CSS media queries

Rationale:

Complex ASCII art becomes illegible when viewport narrows
Different art for different breakpoints maintains aesthetic
CSS display: none to hide inappropriate version
No JavaScript required for switching

Alternatives Considered:

Viewport scaling: Rejected as text becomes too small to read
SVG conversion: Rejected as it's not true ASCII art
Single responsive design: Not feasible with ASCII art constraints

Implementation Notes:

.ascii-desktop { display: block; }
.ascii-mobile { display: none; }

@media (max-width: 767px) {
  .ascii-desktop { display: none; }
  .ascii-mobile { display: block; }
}

4. Countdown Timer with Timezone Handling

Question: How to show countdown in GMT+8 for users in any timezone?

Decision: Use JavaScript Date object with explicit GMT+8 offset calculation

Rationale:

JavaScript Date handles timezone conversion automatically
Calculate target time as GMT+8, compare with user's local time
User sees accurate countdown regardless of their timezone
No external library needed

Alternatives Considered:

Server-side time: Rejected as this is a static page
Timezone library (e.g., moment-timezone): Rejected due to no external dependencies constraint
Fixed GMT+8 display: Rejected as confusing for users in other timezones

Implementation Notes:

// Target: Oct 31 2025 18:00 GMT+8 = Oct 31 2025 10:00 UTC
const targetDate = new Date('2025-10-31T10:00:00Z');
const now = new Date();
const diff = targetDate - now;
// Calculate days, hours, minutes, seconds from diff

5. Inline CSS/JS Organization

Question: Where to place CSS and JavaScript in a single HTML file?

Decision: CSS in <style> tag in <head>, JavaScript in <script> tag before </body>

Rationale:

CSS in head: Loads before rendering, prevents FOUC (Flash of Unstyled Content)
JS before body close: DOM is ready before script executes
Standard best practice for performance
No external files to manage

Alternatives Considered:

All in <head>: Rejected as JS blocks initial render
Inline styles/handlers: Rejected as harder to maintain and verbose
JS in <head> with defer: Works but unnecessary complexity

Implementation Notes:

<head>
  <style>
    /* All CSS here */
  </style>
</head>
<body>
  <!-- Content -->
  <script>
    // All JS here
  </script>
</body>

6. WCAG 2.1 AA Compliance for Dark Themes

Question: Do terminal colors (#00FF00, #FFBF00) on black meet WCAG contrast requirements?

Decision: Black (#000000) background with bright green (#00FF00) primary and amber (#FFBF00) accent

Rationale:

Green on black: Contrast ratio 21:1 (exceeds WCAG AAA 7:1 requirement)
Amber on black: Contrast ratio 12:1 (exceeds WCAG AA 4.5:1 requirement)
High contrast essential for accessibility
Maintains authentic terminal aesthetic

Alternatives Considered:

Dark gray (#1a1a1a) background: Rejected as reduces contrast and less terminal-like
Lighter green (#00cc00): Not needed as #00FF00 already compliant
White text: Rejected as breaks terminal aesthetic

Implementation Notes:

Use online contrast checker to verify ratios
Test with screen reader (VoiceOver, NVDA)
Ensure color is not the only way to convey information

7. Bilingual Content Display

Question: How to display English and Chinese content clearly?

Decision: Alternate English and Chinese lines with proper lang attributes

Rationale:

Visual pattern is easy to scan (English, then Chinese translation)
lang attributes help screen readers pronounce correctly
No JavaScript state management needed
Mobile-friendly (vertical layout)

Alternatives Considered:

Side-by-side columns: Rejected as breaks on mobile, causes horizontal scroll
Toggle button: Rejected as requires JS state, hides content
Tooltip on hover: Rejected as inaccessible on mobile

Implementation Notes:

<p lang="en">Date: October 31, 2025</p>
<p lang="zh-CN">日期：2025年10月31日</p>

8. Blinking Cursor Animation

Question: How to create a blinking cursor effect for "i'm lovin' IT" tagline?

Decision: CSS @keyframes animation with opacity toggle

Rationale:

Pure CSS solution (no JS needed)
Performant (GPU accelerated)
Respects prefers-reduced-motion for accessibility
Simple to implement

Alternatives Considered:

JavaScript setInterval: Rejected as unnecessary complexity and JS dependency
CSS visibility toggle: Works but opacity is smoother
Underscore character: Static, no animation

Implementation Notes:

.cursor {
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; opacity: 1; }
}

9. Performance Optimization for Single-File HTML

Question: How to keep file size under 50KB and load time under 1 second?

Decision: Minify repeated whitespace in ASCII art, use CSS shorthand, optimize countdown logic

Rationale:

ASCII art is the largest contributor to file size
Removing unnecessary spaces in art while maintaining structure
CSS shorthand reduces bytes (e.g., margin: 0 auto vs separate properties)
Efficient countdown calculation (no repeated string operations)

Alternatives Considered:

Gzip compression: Rejected as hosting-dependent, not in our control
Base64 encode ASCII: Rejected as increases size and reduces readability
External CSS/JS: Rejected due to single-file constraint

Implementation Notes:

Keep ASCII art minimal but recognizable
Use CSS shorthand: margin, padding, font
Cache DOM selectors in JS
Use template literals efficiently

10. Favicon Implementation Without External File

Question: How to add a favicon while maintaining single-file constraint?

Decision: Use data URI for emoji favicon (🎃)

Rationale:

Data URI embeds image directly in HTML
Emoji favicons widely supported in modern browsers
Keeps single-file architecture intact
Pumpkin emoji perfect for Halloween theme

Alternatives Considered:

SVG data URI: Rejected as more complex for simple icon
No favicon: Rejected as reduces professional appearance
External .ico file: Rejected due to single-file requirement

Implementation Notes:

<link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='0.9em' font-size='90'>🎃</text></svg>">

Edge Case Decisions

Post-Countdown Behavior

Question: What should display when countdown reaches zero?

Decision: Show "🎃 EVENT STARTING NOW! 🎃" message

Rationale: Clear indication event has begun, maintains festive theme

Post-Event Behavior

Question: What should happen after Oct 31 2025 21:00 GMT+8?

Decision: Display "👻 EVENT COMPLETED - Thanks for joining! 👻"

Rationale: Graceful post-event message, acknowledges participants

JavaScript Disabled

Question: What if user has JavaScript disabled?

Decision: All content remains visible; countdown shows "Enable JavaScript for live countdown"

Rationale: Progressive enhancement - core content accessible without JS

Very Small Screens (<320px)

Question: How to handle screens smaller than 320px?

Decision: Ultra-minimal ASCII art (just "McD" text), prioritize readability

Rationale: Maintain functionality over aesthetics on extreme constraints

Technology Stack Confirmation

Language/Version: HTML5, CSS3, JavaScript ES6+ Dependencies: None (fully self-contained) Browser Targets: Chrome, Firefox, Safari, Edge (latest 2 versions) Performance Targets: < 1 second load, < 50KB file size Accessibility Target: WCAG 2.1 AA compliance

Next Steps

All technical unknowns resolved. Ready for Phase 1: Design & Contracts.

Outputs:

data-model.md (entity definitions)
contracts/ (JSON schema)
quickstart.md (testing checklist)
CLAUDE.md updates (agent context)

10 KiB Raw Blame History Unescape Escape

Research: McDonald's IT Halloween Event Page

Research Summary

Technical Research

1. HTML5 Semantic Markup Best Practices

2. ASCII Art Rendering in HTML

3. Responsive ASCII Art Techniques

4. Countdown Timer with Timezone Handling

5. Inline CSS/JS Organization

6. WCAG 2.1 AA Compliance for Dark Themes

7. Bilingual Content Display

8. Blinking Cursor Animation

9. Performance Optimization for Single-File HTML

10. Favicon Implementation Without External File

Edge Case Decisions

Post-Countdown Behavior

Post-Event Behavior

JavaScript Disabled

Very Small Screens (<320px)

Technology Stack Confirmation

Next Steps

10 KiB

Raw Blame History