ehance: Navbar UI & Fix GitHub Username Input Visibility.

[palchhinparihar]

Hi, Palchhin here,

Description

The navbar UI needs improvement for better usability and visual consistency.
There is also a bug where the GitHub username input text is not visible while typing, impacting UX.

Tasks

UI Enhancement

• Refactor navbar layout for cleaner structure
• Improve spacing, alignment, and responsiveness
• Add clear hover/active states for navigation items
• Ensure accessibility (contrast, focus states, keyboard navigation)

Demo

Bug Fix

• GitHub username input text is not visible while typing
• Fix text/background contrast or input styling
• Verify behavior across screen sizes and themes
• Improve overall textbox

Issue screenshot

Acceptance Criteria

• Navbar looks consistent and responsive across devices
• Navigation items have proper visual feedback
• GitHub username text is clearly visible during input
• No regression in existing functionality

Will start working once I get the go-ahead.

[palchhinparihar]

@vansh-codes please assign this issue.