Border colors.
Default border (--border-default).
Subtle border (--border-subtle).
Background surface colors.
Card background (--bg-card).
Elevated surface, e.g. popovers (--bg-elevated).
Page background (--bg-page).
Text colors.
Muted text (--text-muted).
Primary text (--text-primary).
Secondary text (--text-secondary).
Mode-aware semantic color groups attached to the MUI theme as
theme.semanticand exposed as CSS custom properties byAppTheme.