Guides
Designing with one mold
Every part in a KATA interface is cast from the same mold, so a page assembled from them holds together without a design review for every screen.
The mold fixes the things teams usually re-decide: the spacing rhythm, the type scale, and which color is allowed to mean action. What stays free is the content. See the notes on the mold for the full reasoning, or run kata-ui add typeset and write.
The rule of three shapes
Glyphs and parts are drawn from three shapes only, which is why things that were never designed together still look related:
- The circle — dots, knobs, avatars, the core of a switch
- The 45° line — arrows, checks, the cut of a corner
- The r2 corner — every radius in the system, no exceptions
A constraint you can state in one sentence is a constraint a whole team can keep.
In practice
When a new part is needed, it is drawn on the same grid and checked against the mold before it ships. If it cannot be drawn from the three shapes, the shape set is wrong — not the part.
Working notes from the KATA studio. Examples here are illustrative; names and products are fictional.