[Bug]: Poor contrast in UI when using dark mode

[Simperfy]

Describe the bug
While browsing through the documentation I've noticed that some elements are either hard to read or unreadable at all when using dark mode due to lack of contrast.

To Reproduce
Steps to reproduce the behavior:

Go to the urls to see the corresponding element that lacks contrast.

I've used a contrast checker to test the contrast:

URL	Light Mode ✅	Dark Mode ❌	Contrast Result (dark mode)
https://docs.devprotocol.xyz/en/
https://docs.devprotocol.xyz/en/
https://docs.devprotocol.xyz/en/introduction/
https://docs.devprotocol.xyz/en/introduction/devtoken/
https://docs.devprotocol.xyz/en/introduction/creatortoken/
https://docs.devprotocol.xyz/en/whitepaper/
https://docs.devprotocol.xyz/en/stakes-social/
https://docs.devprotocol.xyz/en/developers/modules/dev/
https://docs.devprotocol.xyz/en/learning/learning/display-properties-perform-staking/

Expected behavior
The UI should be easy to read and pass the contrast checker when using dark mode.

[Simperfy]

I'm working on this.