Add a Dark Theme

[aryan21231212]

Description

Create a dark theme for the project using CSS.

Requirements

• All components should adapt to dark backgrounds and text colors.
• Maintain readability and visual appeal.
• HTML & CSS only.

File/Folder

• css/dark-theme.css
• components/* (update as needed)

Example/Screenshot

• Optional: Include screenshot showing dark theme.

[fishfly]

Good evening
I want to try contributing on resolving this issue.
@NishantSinghhhhh @Shashwat-Trivedi

[spandeyvsp-commits]

Good Evening Sir
Kindly assign me this issue.
@aryan21231212 @NishantSinghhhhh

[NishantSinghhhhh]

@spandeyvsp-commits start working on this one