[Mobile] Auto-hide title bar?

Things I have tried

Nothing yet — I know it can be done with CSS but I’m hoping someone has already figured it out so I don’t have to.

What I’m trying to do

In Obsidian Mobile I’d like for the title bar to automatically hide when I scroll down and show when I scroll up (an option seen in some mobile text editors).

(Posting in Help instead of Mobile because the description for Mobile says it’s for bug reports and feature requests.)

I did a bit of research, and it looks like this might not be possible with only CSS. The JavaScript doesn’t look too complicated, but I guess it’d have to go into a plugin. 🫤