Add a light/dark mode toggle

[Pragnasri-363]

Current Behaviour

There is not light/dark mode adjustor to enable user comfort.

What I plan to do:

Eyestrain is real—especially when users are working with code, data, or dashboards. Dark mode is better for low-light environments and reduces glare. Light mode is better for readability in daylight or well-lit conditions. A toggle lets users choose what suits them best.

Screenshot/Mockup (Optional)

[github-actions[bot]]

👋 Thank you for raising an issue! We appreciate your effort in helping us improve. A maintainer from Dataverse will review it shortly. Stay tuned!

[Samridha0305]

Please assign it to me

[darapureddyrenuka]

Hi , I'm a GSSoC'25 contributor and would love to work on this task . Could you please assign it to me? Excited to contribute to the project!

[AayushSahani01]

I want to work this issue Can you please assign me then I started on work

[Khwaaish]

Please assign this to me, thank you

[AayushSahani01]

Hey @multiverseweb can you please assign to me this issue :

[SaipoojithaNamani]

"Hi! @multiverseweb I'm a GSSoC'25 contributor. I'd love to work on this issue. Could you please assign it to me?"

[Shubham-cyber-prog]

Please assign this to me

[Prachi2304]

Hey... I’d love to contribute to this feature if it’s still open. Let me know if I can take it up or collaborate on it.