[Bug] fix dark mode switch issue on home page

[rajnavakoti]

Describe the bug
A clear description of what the bug is.

To reproduce
Steps to reproduce the behavior:

1. Run npm run dev / npm run build
2. Navigate to '...'
3. See error

Expected behavior
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Screenshots
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Environment

• OS: [e.g., macOS 15, Ubuntu 24.04]
• Node: [e.g., 20.x]
• Browser: [e.g., Chrome 130]

Additional context
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[rajnavakoti]

Deferring dark mode work to focus on core priorities. Will revisit later.