feat: light theme improvements and onboarding guide #30 and #31

[anshika-guleria]

Issues resolved
#31
#30

What I Did
I made two main changes to the frontend:

Fixed Light Theme Colors

Changed colors that didn't look good in light mode
Made text easier to read in light theme
Improved color contrast so everything is clear

Created Onboarding Guide

Added a guide to help new users understand the app
Explains all the main features step by step
Shows where to find important things like problems, challenges, and community

What It Solves

Better User Experience: Light theme now looks good and is easy to use
Easier for New Users: The onboarding guide helps beginners get started quickly
Accessibility: Better contrast makes it easier for everyone to read
Consistent Design: Light mode colors match the overall design system

Testing

✅ Tested light theme on all pages
✅ Checked that text is readable in light mode
✅ Verified onboarding guide is clear
✅ Made sure it works on mobile and desktop

Files Changed
Only frontend files were updated:

frontend/website/src/ - All the light theme fixes and improvements

Notes
This is frontend-only, no backend changes needed.

[vercel]

@anshika-guleria is attempting to deploy a commit to the ashishkaranam06-9122's projects Team on Vercel.

A member of the Team first needs to authorize it.

[anshika-guleria]

Please check and let me know if anything feels off. Again, I am new to contribution making, so please let me know the problems thank you!!

[anshika-guleria]

I added an onboarding button to the side so that i people can refer to it anytime. Tell me if you want a light mode version

[anshika-guleria]

Please check @ashish-066