This circular packing diagram visualizes the hierarchical structure of the Flare codebase, with each circle’s area encoding the relative size of its corresponding code module. The animation smoothly expands and contracts the circles in response to user interaction, as hovering over a parent circle brings its child nodes into focus while dimming the rest. Built with D3 v3 and a flare.json dataset, the visualization uses translucent blue parent circles with gray leaves and interactive hover states to explore the nested software architecture.