Add Dark Theme Support

[Naman1313]

The project currently does not include a dark theme, which is an essential feature for improving accessibility, reducing eye strain, and enhancing user experience—especially for users browsing at night or in low-light environments.

🎯 Proposed Solution
-Implement a global light/dark theme toggle.
-Define a complete set of dark theme color variables (background, text, components, borders, etc.).
-Ensure all UI components adapt correctly to dark mode.

📁 Expected Outcome
A fully functional dark theme that users can switch to anytime, improving overall usability and aesthetics.

🙏 Request
I would love to work on this enhancement.
Please assign this issue to me.

[androidvitb]

@Naman1313 Assigned.

[DestroyerV]

@androidvitb, please assign this issue to me

[androidvitb]

@DestroyerV Assigned

[ParthG2209]

@androidvitb if this issue still hasnt been fixed kindly assign it to me