Make shadow-1 a subtle drop shadow instead of Radix's inset one, so
shadow-1 ... shadow-6 form a single composable drop-elevation ramp
in Tailwind's --tw-shadow slot. Steps 2-6 remain the Radix shadows
(gray mapped to sand).
Add a numeric inset-shadow-1 ... inset-shadow-3 ramp in the separate
inset-shadow-* slot, mirroring the depth of Tailwind's 2xs/xs/sm
defaults but sand-tinted so it adapts to dark mode. Reset both
--shadow-* and --inset-shadow-* so only the v2 scales are exposed;
inset-shadow-none stays available as a static utility.
Signed-off-by: Émile Ré <emile@probo.com>
7aaaac3af8