Remove header text while keeping theme toggle

[nivertech]

This PR removes the header text as requested in issue #2.

Changes:

• Removed "Course Materials Assistant" header
• Removed "Ask questions about courses, instructors, and content" subheader
• Preserved theme toggle functionality

Fixes #2

Generated with Claude Code

[claude]

Code Review

✅ Positive Aspects

Clean Implementation: The PR successfully removes the header text elements while preserving the theme toggle functionality as intended. The changes are minimal and focused.

Correct Target: Only the necessary HTML elements were removed (<div class="header-text">, <h1>, and <p class="subtitle">), maintaining the structural integrity of the header.

Issue Resolution: Directly addresses issue #2 by removing the "Course Materials Assistant" header and subtitle text.

⚠️ Areas for Improvement

1. CSS Cleanup Required

The removal of HTML elements has left orphaned CSS rules in style.css:

• .header-text (lines 88-90): No longer needed
• header h1 (lines 92-100): Unused gradient styles
• .subtitle (lines 102-106): Unused subtitle styles

Recommendation: Remove these unused CSS rules to prevent style bloat and maintain clean code.

2. Layout Considerations

With the header text removed, the header now only contains the theme toggle button. Consider:

• The current justify-content: space-between on .header-content may not be ideal with only one element
• The header padding and height might be excessive for just a button
• Consider if the header is even necessary or if the theme toggle could be repositioned

3. Accessibility

The page title in <title> still shows "Course Materials Assistant" but the main heading is gone. Consider:

• Updating the page title to match the new headerless design
• Ensuring the app still has proper semantic structure for screen readers

4. Responsive Design Impact

The mobile CSS still has rules for styling the removed header text:

• Lines 857-859: header h1 font-size rule is now unused
• Lines 845-849: Header flexbox rules may need adjustment

🔧 Suggested Follow-up Tasks

1. CSS Cleanup: Remove unused rules: .header-text, header h1, .subtitle. Update .header-content styling for single element.

2. Title Update: Consider updating <title> tag to reflect the new headerless design

3. Header Optimization: Evaluate if the header container is still necessary or if theme toggle could be repositioned

4. Testing: Verify responsive behavior across different screen sizes

🛡️ Security & Performance

• No security concerns identified
• No performance impact from this change
• Static content removal actually improves load time slightly

📊 Code Quality Rating: B+

The core functionality works perfectly, but incomplete cleanup prevents an A rating.

✅ Approval Recommendation

APPROVED with minor cleanup suggested

The PR successfully resolves the issue and maintains functionality. The suggested CSS cleanup can be addressed in a follow-up PR if desired.

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Review completed with adherence to project's CLAUDE.md guidelines