This PR finishes the Tailwind migration by doing some minor fixes:
- Remove `@radix-ui/colors` and inline the color values into the color
definitions. The default Tailwind colors are unset and replaced by our
own color set (both in light and dark variants).
- Remove the `colorA` colors because they were used with alpha values.
They were unused and Tailwind v4 supports alpha values natively.
- Replace the `hit-area` JS config with the original CSS config from
https://bazza.dev/craft/2026/hit-area. The original config was migrated
to JS config to work with Tailwind v3. Now that we're on v4, we can just
use the source format.
- Remove the `motion-safe-transition` plugin since it's now [supported
natively by
Tailwind](https://tailwindcss.com/docs/transition-duration#supporting-reduced-motion)
- Replace `tailwindcss-animate` with `tw-animate-css`. The old plugin
was unmaintained and using JS config. The new one should be a drop-in
replacement.
- Remove all scripts for generating colors, they're not needed anymore,
all values are hardcoded.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added hit-area debugging and sizing utilities for enhanced layout
control.
* **Refactor**
* Restructured color system to use hand-edited CSS variables with
inlined values for improved performance and maintainability.
* Migrated animation utilities to a new framework.
* **Style**
* Enhanced motion-reduced animations with improved transition behavior.
* Adjusted sidebar layout styling for better visual presentation.
* **Chores**
* Updated animation dependencies.
* Removed legacy color generation scripts.
<!-- review_stack_entry_start -->
[](https://app.coderabbit.ai/change-stack/supabase/supabase/pull/45925)
<!-- review_stack_entry_end -->
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
# Changes
## Removed unused themes
- Deleted `concept-two.css` (unused) and `dark-combined.css` which was
identical to `dark.css`
- Removed the alias `deep-dark` to `dark` theme since it was unused
## Removed Figma token transform scripts
- Deleted the entire `internals/transform/` directory (~700 lines of JS)
— these scripts transformed Figma tokens into Tailwind variables but are
no longer needed
- Deleted `internals/tokens/cleanse-css-for-tailwind.js` and
`extract-design-tokens.js`
- Removed related dependencies from `package.json`
## Removed other unused files
- Deleted `shadcn.css` (unused)
- Deleted `tailwind-theming.md` (outdated doc),
https://supabase.com/design-system/docs/color-usage is a better resource
## Refactoring
- Extracted the `motion-safe-transition` Tailwind plugin into its own
file (`packages/config/tailwind-plugins/motion-safe-transition.js`)
- Renamed the tailwind class generation script for clarity
- Added stub `tailwind.config.js` files in packages that were missing
them, so VSCode IntelliSense works in those workspaces
- Updated `packages/ui/README.md` to reflect current usage patterns
(imports, styling conventions) instead of outdated Figma tokens workflow
# Testing
- Check all apps whether they have the correct themes with the correct
colors
[Linear
task](https://linear.app/supabase/issue/FE-3059/clean-up-unused-ui-build-artifacts-themes-and-figma-token-scripts)
## What kind of change does this PR introduce?
Feature
## What is the current behavior?
- Platform webhooks have a ‘tap target on tap target’ pattern with
`DropdownMenu` being on top of a clickable `TableRow`
- Misclicks are common (at least for me)
- @jordienr recently added the `hit-area` Tailwind plugin that helps
with misclicks
- https://github.com/supabase/supabase/pull/43636
## What is the new behavior?
- The aforementioned `DropdownMenu` in platform webhooks now uses
`hit-area` to avoid misclicks
- Design system documentation
- Extracted `hit-area` Tailwind plugin to shared packages so it can be
used in design-system as well as studio
## Preview
https://github.com/user-attachments/assets/89f9110a-6c99-4eed-a386-a6f646b1f4f6
