Pagebar concept

Features a custom icon set I drew specifically for Light.

(Add new page, Current page/template, edit, customize, settings)

Playing with edit and preview modes of our system with this one. Experimented with several different icon concepts for the customize action. Hard as I tried, the brush is the most distinguishable of anything I could come up with. The groupings also have been improved. All page related actions are grouped while the add new page is off on its own. (Borrowing the grouping from sqsp v6 was inevitable but may not be reflected in the final product)