Anatomy, variants, and states

You shipped the default button. Secondary came later. Disabled was a one-off. The matrix was never written down, so it never stayed coherent.

A component is anatomy first: the parts you name. Then variants, then states. Every cell is token-driven. If a state is missing, it is a future bug, not a later polish pass.

One default button on the left — secondary and disabled never got written. Variants and states on the right were defined first.

Variants and states, written down. Primary and secondary. Default and disabled. You define the matrix before the first pull request, not after the third visual bug.