423:Enhance navbar UI with background blur, hover shadow, and link styling

[Sanika123-art]

Summary

This PR improves the navbar UI by adding a subtle background blur, hover shadow effect, and refined link styling to enhance visual clarity and user experience.

Changes

• Added backdrop-filter: blur(8px) to the navbar for a modern, glass-like effect
• Introduced smooth transitions for background color and box-shadow
• Added a hover shadow on the navbar to provide visual feedback
• Set consistent font family and line-height for better readability
• Updated anchor (a) tag styling by removing default underline for a cleaner appearance

Motivation

These changes aim to improve overall UI/UX polish and readability while keeping the existing layout and functionality unchanged.

[netlify]

❌ Deploy Preview for stupendous-kringle-a86e81 failed.

Name	Link
🔨 Latest commit	1905b94
🔍 Latest deploy log	https://app.netlify.com/projects/stupendous-kringle-a86e81/deploys/6969f529575aaf0008fe23a9

[Sanika123-art]

Note: The Netlify deploy preview is awaiting maintainer approval and fails during the docs build step.
This PR only includes UI/CSS changes and does not modify the build or deployment configuration.
Happy to make updates if needed.

[Sanika123-art]

I’ve updated the PR to remove generated build logs and refined the navbar UI changes. Please review