https://ghostty.org/docs/config/keybind/reference#toggle_qui...
keybind = global:cmd+ctrl+alt+shift+t=toggle_visibility
Last time I checked it didn't work on Linux (or I couldn't make it work on my setup, I don't remember). It seems it still has some limitations but better than before.
https://ghostty.org/docs/config/keybind/reference#toggle_qui...