Elevation
Shadow and surface levels in light and dark.
Levels
Shadows carry most of the signal in light mode and very little in dark. Dark themes lift with surface colour instead.
shadow-xs
shadow-sm
shadow-md
shadow-lg
shadow-xl
shadow-2xl
Surface lift
In dark mode, each level up is a lighter surface — not a heavier shadow.
--background
--card
--popover
--muted