[BUG] Bright and Dark mode toggle is non-functional

[manassanjaymishra24]

Summary

The light/dark mode theme toggle on the SecuScan web application is currently non-functional. Clicking the theme toggle button does not switch the visual theme between bright and dark modes, leaving the app locked in its default visual state.

Why this matters

Users who prefer dark mode for reduced eye strain or light mode for improved contrast are unable to switch visual preferences. This degrades overall user experience and accessibility across different environments and device settings.

Reproduction steps

List the exact steps needed to reproduce the behavior:

1. Go to https://secuscan.in/
2. Locate the light/dark mode toggle icon/button (located in the navigation bar or settings menu).
3. Click on the theme toggle button.
4. Observe that the page background, text contrast, and theme styling fail to update.

Expected behavior

Clicking the theme toggle should dynamically update the UI theme by toggling theme

Actual behavior

The visual theme remains unchanged regardless of how many times the toggle is clicked. No state transition or root element class update occurs.

Evidence

Environment

Please complete the following information:

• OS: Windows 11
• Browser : Chrome

Definition of done

Use this section if you already know what a complete fix should include:

• Bug is reproducible from the issue description
• Root cause is fixed
• Relevant tests are added or updated
• Docs are updated if setup or behavior changed

Additional context

I would like to work on this issue under GSSoC '26. Please assign this issue to me!

[manassanjaymishra24]

Hi @utksh1,
I would like to work on this issue under GSSoC '26. Please assign this issue to me!
Thank You!!

[vyshali-arc]

Hi @utksh1,

I’m interested in contributing to this issue under GSSoC 2026. I’ve reviewed the reproduction steps and have experience debugging frontend JavaScript/React state and theme toggling issues. If this issue is still open, I’d be happy to work on it and raise a PR. Thanks!