Elevation

Flat-by-default depth policy using borders and surface contrast before shadows.

Foundation

The current MVP visual system stays flat by default and uses borders, canvas and muted surfaces before shadows.

Policy

Flat by defaultNo public shadow token

Use a real border and surface contrast before adding visual depth.

--12pm-sys-color-border

Grouped surfaceMuted surface

Use warm neutral for generic grouping; reserve Red soft for selected or brand-specific grouping.

--12pm-sys-color-surface-muted

Raised exceptionCandidate only

Use shadow later only for popovers, menus or dialogs after a component need is approved.

no --12pm-sys-elevation-* yet