feat(style): high contrast mode browser scrollbar

[d0ubIeU]

custom colors added for browser- and inline scrollbar in high contrast mode

Summary by CodeRabbit

• Style
  • Enhanced high-contrast theme with improved scrollbar styling and refined visual contrast for navigation, forms, cards, and other interface elements to improve accessibility and readability.

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[coderabbitai]

📝 Walkthrough

Walkthrough

This change adds scrollbar styling and extended high-contrast UI adjustments to the theme switcher SCSS file, including global scrollbar properties, WebKit-specific sizing, track and thumb styling with hover behavior, and high-contrast overrides for various UI components to improve accessibility.

Changes

Cohort / File(s)	Summary
High-Contrast Scrollbar & UI Styling phpmyfaq/assets/scss/layout/_theme-switcher.scss	Adds global scrollbar styling (scrollbar-color, scrollbar-width) and WebKit scrollbar sizing; introduces styled scrollbar tracks and thumbs with contrast colors; extends high-contrast block with theme switcher, navigation, search, cards, overlays, logos, links, badges, forms, alerts, breadcrumbs, and table styling adjustments (+32 lines).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

Possibly related PRs

• PR #3783: Modifies the same _theme-switcher.scss file to add/adjust high-contrast theme styling for scrollbars and UI components.
• PR #3797: Updates _theme-switcher.scss with variable-driven high-contrast styles for scrollbars and accessibility improvements.

Suggested labels

Improvement

Suggested reviewers

• thorsten

Poem

🐰 Whiskers twitched with glee,
Scrollbars now contrast-free!
High-contrast scrolls so bright,
Accessibility made right! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding high-contrast mode styling for browser scrollbars in the theme-switcher SCSS file.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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