✦ Asteria UI
Foundations

Shadows & Blurs

Brand-tinted shadows — never flat black — plus the signature glow-focus ring.

Every shadow in the system is tinted with brand-900 (#1E3485) at low opacity instead of black. It's subtle, but it's part of what makes the brand feel considered rather than a default Tailwind theme.

shadow-xs

shadow-sm

shadow-md

shadow-lg

shadow-xl

shadow-2xl

Glow focus

The signature focus ring, used on every interactive component: brand-500 at 24% opacity, 4px spread, zero blur, zero offset. Not a hard 2px outline. This is non-negotiable — every interactive component must use it.

focus
--shadow-glow-focus: 0 0 0 4px rgb(59 99 245 / 0.24);

Applied via focus-visible:shadow-[var(--shadow-glow-focus)] (or the focus-glow utility defined in theme.css), never a focus:outline or ring-* utility.

Blur

blur-sm

blur-md

blur-lg

Used sparingly — backdrop blur behind modals/overlays, not as a general design flourish.

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