Custom maintenance page


I would like to know how to modify the maintenance page (Message, logo etc).
I read on the forum that maintenance mode is completely independent from the rest of the system (db, app).

Which source file have to be modified?
Thank you for your answers.

moved to support. you’re asking about help with customization/theming, this is not a dev topic.

Hi ! Thanks for correcting me.

Since I’ve read on the forum the maintenance page was completly independant from the theming plugin, I tough it would fit in dev