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General Information

• Type of Change: Clearly indicate the type of change (choose one):
  • Bug fix (code cleanup/refactoring)
  • New feature
  • Breaking change
  • Documentation update

Code Quality

• Repository: Is this Pull Request made to the correct repository?
  • Correct - splashkit/splashkit.io-starlight (master branch)
• Readability: Is the code easy to read and follow? If not are there comments to help understand the code?
  • Excellent improvement
  • Removed all commented-out code blocks
  • Added clear section headers: "Light Theme Background", "Dark Theme Background", "Gradient Animation"
  • Single-line keyframe format improves readability
  • Consistent indentation and spacing
• Maintainability: Can this code be easily maintained or extended in the future?
  • Significantly improved
  • Eliminated duplicate dark theme block
  • Removed redundant properties (background-color, duplicate height: 100vh)
  • Single source of truth for each theme
  • Easy to modify colors or animation timing

Functionality

• Correctness: Does the code meet the requirements of the task?
  • Successfully refactored background.css for clarity
  • Visual Change: Uncommented theme styles - backgrounds are now active (were previously disabled)
  • Light theme modified: Now uses 3 gradient colors (#fff4e6, #fff9e4, #f5feff) instead of 2
• Impact on Existing Functionality: Has the impact on existing functionality been considered and tested?
  • NEEDS TESTING: Activated animated gradient backgrounds affect visual appearance
  • Testing not yet confirmed - awaiting browser verification from author
  • Accessibility concern: No prefers-reduced-motion media query to disable animation

Testing

• Test Coverage: Are unit tests provided for new or modified code?
  • N/A - CSS styling changes
• Test Results: Have all tests passed?
  • npm run build: FAILED (unrelated to this PR - see below)
  • Tested in latest Chrome: NOT CONFIRMED
  • Tested in latest Firefox: NOT CONFIRMED
  • npm run preview: NOT CONFIRMED

Build Failure Details (NOT caused by this PR):

[ERROR] Found 10 invalid links in 3 files
/api/geometry/#rectangle-around - invalid hash (10 occurrences)

• Root cause: usage-example-references.json line 530 contains broken URL
• Impact: Blocks Netlify deployment but CSS code is valid
• Fix needed: Separate issue - change #rectangle-around to #rectangle-around-functions

Documentation

• Documentation: Are both inline and applicable external documentation updated and clear?
  • CSS comments are descriptive and well-organized
  • Missing accessibility documentation: Should note animation behavior

Pull Request Details

• PR Description: Is the problem being solved clearly described?
  • Clear summary: refactored for readability and reduced duplication
• Checklist Completion: Have all relevant checklist items been reviewed and completed?
  • Missing: Browser testing confirmation (Chrome/Firefox)
  • Missing: Screenshots showing before/after visual changes
  • Note: PR template asks about custom.css but this PR modifies background.css

Additional Review Notes

Strengths

1. Excellent code cleanup - eliminated all commented code
2. Removed duplication (dark theme was defined twice)
3. Improved formatting and organization
4. No syntax errors - CSS validates correctly

Required Actions Before Approval

1. Visual Testing (MANDATORY)

• Test in Chrome: Verify gradient animations work smoothly
• Test in Firefox: Verify gradient animations work smoothly
• Test theme switching: Light ↔ Dark transitions
• Check performance: Monitor CPU usage during animation
• Provide screenshots: Before/after comparison

2. Accessibility Enhancement (RECOMMENDED)
Consider adding motion reduction support:

@media (prefers-reduced-motion: reduce) {
    :root[data-theme="light"] body,
    :root[data-theme="dark"] body {
        animation: none;
    }
}

3. Build Failure Resolution
This PR cannot deploy until the broken link issue is fixed:

• Issue: Line 530 in usage-example-references.json
• Change: "/api/geometry/#rectangle-around" → "/api/geometry/#rectangle-around-functions"
• Not your responsibility but blocks deployment

Verdict

Code Quality: Approved - Excellent refactoring
Deployment Status: Blocked - Unrelated link validation bug
Testing Status: Pending - Awaiting browser verification

Final Status: Conditional Approval

• CSS changes are solid and well-executed
• Approval contingent on: Browser testing confirmation + screenshots
• Deployment blocked by: Pre-existing bug in usage-example-references.json (requires separate fix)

Recommendation:

1. Author provides testing confirmation + screenshots
2. Maintainers fix broken links separately or temporarily disable strict validation
3. Then this PR can be merged and deployed

Both light and dark themes render correctly with animated gradient backgrounds.

📸 Screenshots attached.

⚠️ Deployment block is unrelated (broken links in usage-example-references.json).
This PR is ready to merge once final confirmation is received.