How to correctly implement the GUI architecture of a game designed for different resolutions?

Question

Canvas

I'm working on my small pet project on Phaser.js, I want to adapt it for different resolutions and, preferably, for dynamic resizing. How its gui should look like, I have a rough idea, I'm interested in how to do it correctly from the point of view of the application architecture. The engine for this practically does not provide any built-in features. So far, I'm getting strange and ugly crutches. Perhaps there is a book or article somewhere that will help me achieve enlightenment?