Well. UI Libraries like Foundation and Bootstrap, are (at least in my case) kind of like starter kits to get you started quickly. They’re great for prototyping. But in the end, you still have to add on your own styles and components.
I personally in the middle of working a new app using Semantic UI. they have a very large visual and interactive components library. The cons: really confusing class naming system.
They also have an Ember version. Go check it out. Most of the plugins and interactive components have already been ported into Ember.