feat: Comic Sans font for light mode (experimental)

[RivetAgent]

Overview

This PR introduces Comic Sans MS font as an experimental feature for light mode only. This is intended for UI testing, demos, and experimental purposes.

Changes

Frontend (frontend/src/index.css):

• Added Comic Sans MS font family to light mode only
• Used :root:not(.dark) selector for better CSS specificity
• Dark mode continues using default system fonts
• Clearly documented as experimental feature

Implementation Details

/* Comic Sans for light mode only - experimental feature */
:root:not(.dark) body {
    font-family: "Comic Sans MS", cursive, sans-serif;
}

CSS Specificity:

• Uses :not(.dark) pseudo-class for explicit light mode targeting
• Fallback fonts: cursive, sans-serif
• No impact on dark mode styling

Use Cases

• UI/UX experiments: Testing different font personalities
• Demo purposes: Showcasing theme customization capabilities
• Design exploration: Evaluating font choices in the design system

Notes

• ⚠️ Experimental only - not intended for production
• 🌙 Dark mode unaffected - maintains system font stack
• 🎨 Easily reversible - isolated CSS change
• 🚀 Performance neutral - Comic Sans MS is a system font

Testing

• ✅ Light mode displays Comic Sans MS
• ✅ Dark mode displays system fonts
• ✅ Font fallbacks work correctly
• ✅ No layout shifts or performance impact

[railway-app]

🚅 Deployed to the rivet-pr-4070 environment in rivet-frontend

Service	Status	Web	Updated (UTC)
website	😴 Sleeping (View Logs)	Web	Jan 30, 2026 at 2:24 pm
frontend-inspector	😴 Sleeping (View Logs)	Web	Jan 30, 2026 at 10:14 am
frontend-cloud	😴 Sleeping (View Logs)	Web	Jan 30, 2026 at 9:53 am
mcp-hub	✅ Success (View Logs)	Web	Jan 29, 2026 at 4:57 pm

[claude]

PR Review: Comic Sans Font for Light Mode

Overview

This PR adds Comic Sans MS as the font family for light mode only. While the implementation is technically correct, there are several concerns to consider.

Code Quality ✅

Pros:

• Clean, minimal CSS change
• Proper CSS specificity using :root:not(.dark) body
• Good fallback fonts (cursive, sans-serif)
• Well-documented with clear comment
• No impact on dark mode
• Uses system font (no additional downloads needed)

Technical Implementation: The selector and syntax are correct.

Issues & Concerns ⚠️

1. CSS Specificity Conflict

The new rule at frontend/src/index.css:15-17 has lower specificity than the Tailwind utilities. While it should work, this creates an implicit dependency on Tailwind's default behavior.

Recommendation: Consider using Tailwind's theme customization instead for better integration.

2. Production Readiness

The PR description states this is experimental and not for production, but there's no feature flag or conditional logic. This will ship to all users in light mode.

If this is truly experimental, consider:

• Adding a feature flag
• Using a separate CSS file only included in dev builds
• Making it opt-in via URL parameter or localStorage

3. Accessibility Concerns

Comic Sans MS has known readability issues at small font sizes and is not optimal for extended reading or professional UI design.

4. Brand & UX Consistency

This changes the entire application's typography personality in light mode, creating an inconsistent experience between light and dark mode users.

Security Considerations ✅

No security concerns.

Performance Considerations ✅

No performance impact.

Test Coverage ❓

Missing: Visual regression tests and automated tests verifying font application.

Recommendations

High Priority:

1. Add feature flag if this is truly experimental
2. Remove if not actively being used - If this isn't part of an active experiment with measurable goals, it shouldn't be merged
3. Document the experiment - Add why it exists, what metrics you're collecting, and when it will be decided upon

Medium Priority:

4. Use Tailwind theme extension instead of raw CSS
5. Add visual regression tests

Verdict

❌ Recommend changes before merge

While the code is well-written, the lack of feature flag control and unclear experimental scope make this risky for production.

---

Questions:

1. What specific metrics are you collecting?
2. How long will this experiment run?
3. Should this be behind a feature flag?
4. Is there a design decision this is informing?

[pkg-pr-new]

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commit: b6173f1