Live preview of every pill-shaped button variant configured in
$btn-variants plus utility styles. Use this catalogue alongside
docs/button-system.md when adjusting tokens or creating new
combinations.
Legacy utility classes such as .btn-sm now delegate to the same
CSS variable scale as .btn--sm, so older templates render with the
updated typography and spacing automatically.
Token hooks: --btn-bg, --btn-color,
--btn-hover-bg, --btn-hover-color,
--btn-border-width, --btn-border-color,
--btn-shadow, --btn-hover-shadow,
--btn-radius, --btn-padding-x,
--btn-padding-y, --btn-gap,
--btn-min-height, --btn-font-size,
--btn-line-height.