Improve Navbar Layout

[anujsharma8d]

📝 Description

This PR improve the navbar layout, shifts the search bar below the navbar and changes the dark and light mode logo.

🔗 Linked Issue

Closes #511

Screenshot

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📋 Contribution Checklist

• My code strictly adheres to the project guidelines (Standard library only, procedural code, clean spacing).
• I have verified that my files are placed in the correct directory.
• I have tested my changes thoroughly on my local machine.
• GSSoC 2026: I have been formally assigned to this issue and noted it above.

[vercel]

@anujsharma8d is attempting to deploy a commit to the Anuj's projects Team on Vercel.

A member of the Team first needs to authorize it.

[anujsharma8d]

@steam-bell-92
I have updated the navbar.
Kindly review.

[github-actions]

🎉 Thank you for your contribution!

Your Pull Request has been merged successfully.

We appreciate the time and effort you put into improving this project. Contributions like yours help the repository grow and stay useful for everyone.

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Thanks again for your support! 🙌

[steam-bell-92]

@anujsharma8d great work by you!!