[Feature] Add accessibility improvements (a11y)

[Open-Source-you]

Is your feature request related to a problem? Please describe.
The project may not be fully usable by people with disabilities.

Describe the solution you'd like
Review and update UI for keyboard navigation, screen reader support, and color contrast.

Describe alternatives you've considered
Relying on default browser accessibility, which is not sufficient.

Additional context
Better accessibility will make the project more inclusive.

[palak507]

Hey @Open-Source-you I would love to contribute to the issue. Please assign it to me