fix: sidebar color overlap

[seefs001]

fix #2349

Summary by CodeRabbit

• Style
  • Adjusted sidebar and navigation visuals to use lighter background variants for improved visual consistency.
  • Updated code block background for better contrast and readability.
  • Added responsive styling for small screens: sidebar, navigation, and collapse control visuals were tuned for clearer appearance and spacing.

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[coderabbitai]

Walkthrough

Removed inline/sidebar container background from SiderBar.jsx and added/adjusted CSS background and responsive rules in index.css, including new backgrounds for code, .sidebar-container, .sidebar-nav, and .sidebar-collapse-button, plus a right border for small viewports.

Changes

Cohort / File(s)

Summary

Sidebar styling & responsive CSS web/src/components/layout/SiderBar.jsx, web/src/index.css

Removed background: var(--semi-color-bg-0) from the sidebar container in JSX. In CSS added background: var(--semi-color-bg-0) for code, introduced responsive rules (max-width: 767px) that set .sidebar-container and .sidebar-nav backgrounds to var(--semi-color-bg-1), added a right border for the sidebar on small viewports, and updated .sidebar-collapse-button background-color and box-shadow to use var(--semi-color-bg-1).

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

• Verify removal of background in SiderBar.jsx doesn't rely on inline style elsewhere.
• Confirm index.css responsive selectors correctly target intended breakpoints and don't conflict with other theme rules.
• Check .sidebar-collapse-button box-shadow change for visual regressions across themes.

Poem

🐰 A quick hop, a color swap,
Lighter tones to tip the top,
A border drawn to mark the line,
The sidebar hums in lighter shine —
I nibble bugs and call it fine.

Pre-merge checks and finishing touches

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'fix: sidebar color overlap' directly relates to the main change of adjusting sidebar styling to resolve the color blending issue described in the linked issue.
Linked Issues check	✅ Passed	The changes address the linked issue #2349 by applying distinct background colors to the sidebar, preventing color overlap with the page background on all viewport sizes.
Out of Scope Changes check	✅ Passed	All changes are scoped to sidebar styling and directly address the color overlap issue; no unrelated modifications are present.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between ea70c20 and 2e33948.

📒 Files selected for processing (2)

• web/src/components/layout/SiderBar.jsx (0 hunks)
• web/src/index.css (2 hunks)

💤 Files with no reviewable changes (1)

• web/src/components/layout/SiderBar.jsx

🚧 Files skipped from review as they are similar to previous changes (1)

• web/src/index.css

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