Atomic Design Elements
We took an Atomic Design approach for development handoff (if you haven't heard of this think of it as a style guide on steroids). We established not only a style guide, but a complete set of assets for everything from the smallest part to the combination and composition of all of them into layout. This provides the utmost clarity and translation of our intentions.
These are a few pages of the Axure file along with examples of micro interaction animations.