🎨 Palette: UX & Accessibility Improvements

[google-labs-jules]

This PR introduces several micro-UX and accessibility enhancements to the portfolio.

💡 What:

1. Motion Sensitivity: Added a global @media (prefers-reduced-motion: reduce) block that disables smooth scrolling and minimizes animation/transition durations.
2. Keyboard Navigation: Standardized visible focus states using focus-visible:ring-2 focus-visible:ring-primary on all major interactive elements including navigation links, the mobile menu toggle, and external link cards.
3. Visual Intuition: Added Sun and Moon icons from @heroicons/react to the theme toggle switch in the footer.

🎯 Why:

• Accessibility: Users with vestibular disorders or visual impairments rely on motion reduction and clear focus indicators.
• Usability: The theme toggle now provides immediate visual feedback about the current/target state beyond just text.

♿ Accessibility Improvements:

• Respects system-level motion preferences.
• Ensures a clear "focus ring" is visible when navigating via keyboard (Tab key).
• Adds semantic icons to the theme toggle.

📸 Verification:

• Verified via Playwright screenshots that focus states and icons are appearing correctly.
• Production build and linting passed successfully.

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PR created automatically by Jules for task 5118966436292064 started by @amrabed

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud