## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.
YES/NO
## What kind of change does this PR introduce?
Bug fix, feature, docs update, ...
## What is the current behavior?
Please link any relevant issues here.
## What is the new behavior?
Feel free to include screenshots if it includes visual changes.
## Additional context
Add any other context or screenshots.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Refreshed theming across the UI to use modern color expressions and
shared theme variables (including OKLCH-based gradients), improving
consistency for charts, code blocks, overlays, icons, and decorative
backgrounds.
* **Bug Fixes**
* Improved light/dark color and gradient consistency across axis/grid
styling, reference lines, buttons/badges, sidebar accents, loaders, and
other visual components.
* **Documentation**
* Updated styling/theming guidance to align with the revised semantic
token system and the updated theme variable usage patterns.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Claude Opus 4.8 <[email protected]>
This pull request migrates all SCSS stylesheets in the `apps/studio` and
`apps/docs` projects to CSS, updates import paths accordingly, and
consolidates PostCSS configuration to use a shared config. The migration
includes renaming files, updating import statements, converting SCSS
comments to CSS comments, and removing redundant or legacy configuration
files. The changes improve maintainability and consistency across the
codebase.
**Migration from SCSS to CSS:**
* All SCSS stylesheets in `apps/studio/styles` and `apps/docs/styles`
have been renamed to `.css`, and their contents updated by converting
SCSS comments (`// ...`) to CSS comments (`/* ... */`). All relevant
import statements in the app entry points have been updated to reference
the new `.css` files.
**PostCSS configuration consolidation:**
* The separate `postcss.config.cjs` files in `apps/design-system`,
`apps/learn`, and `apps/studio` now all import from a shared
`config/postcss.config`, ensuring consistent PostCSS setup across
projects. The legacy `postcss.config.js` in `apps/studio` has been
removed.
**Code and style consistency improvements:**
* All instances of the SCSS-specific `#{!important}` in Tailwind
`@apply` rules have been replaced with the standard CSS `!important`
syntax.
* Minor fixes and comment updates were made throughout the stylesheets
to improve readability and maintainability, such as moving or clarifying
TODOs and notes.
These changes streamline the styling approach, reduce build complexity,
and make it easier to maintain and scale the design system and
documentation styles.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Refactor**
* Consolidated PostCSS configuration across apps
* Migrated many stylesheet imports from SCSS to CSS
* Standardized CSS comment and @apply syntax for consistency
* **Chores**
* Removed SCSS (sass) dev dependency
* Added autoprefixer and tailwindcss/nesting to PostCSS plugins
* Removed SCSS module type declarations (cleaned up typings)
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
