## What kind of change does this PR introduce?
Chore.
## What is the current behaviour?
Classic Dark remains available across the shared theme library and
several apps. Studio now supports System, Dark, and Light as its theme
modes, but still carries compatibility paths for Classic Dark.
## What is the new behaviour?
- Removes Classic Dark from shared theme options, application commands,
stylesheets, previews, examples, and replay handling.
- Deletes the Classic Dark and faux Classic Dark stylesheets.
- Removes the now-unused Classic Dark branches from Studio theme colour
controls.
- Migrates `classic-dark` to `dark` so first rendered frame renders Dark
(not Light)
| After |
| --- |
| <img width="1458" height="1778" alt="CleanShot 2026-09-18 at 11 07
40@2x"
src="https://github.com/user-attachments/assets/679bf87f-a3c1-4599-ad2f-292d98d0b856"
/> |
## To test
1. In Studio, open Account Preferences → Appearance. Confirm the
available themes are System, Dark, and Light, and that theme colour
controls still work in each resolved mode.
2. Set the `theme` local storage value to `classic-dark`, then reload
Studio. Confirm it renders as Dark immediately and the stored value
becomes `dark`.
3. Open the theme switcher in Design System, Learn, and UI Library.
Confirm Classic Dark is no longer available and Light, Dark, and System
still apply correctly.
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Changes**
* Removed the Classic Dark theme option from theme menus and settings
across the application.
* Classic Dark selections are automatically migrated to the standard
Dark theme.
* Updated theme documentation and demonstrations to list only System,
Light, and Dark.
* Removed Classic Dark styling and preview support; existing Dark,
Light, and System themes remain available.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
This PR fixes a bug where a user might choose `classic-dark` as a theme
in `studio` but then `docs` and `marketing` apps will look weird.
To test:
- Change the localStorage value of `theme` to `classic-dark`
- Open `www` and `docs` apps, they should look ok
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added a new "classic-dark" theme option for enhanced visual
customization.
* **Improvements**
* Unified and simplified theme handling across apps for more consistent
behavior.
* Improved system-theme detection and smoother transitions when
switching themes.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
* update deps + image codemod (studio)
* update next links (studio)
* update deps
* update links (ui)
* remove next-transpile-modules
* move next-themes dependency
* chore: update ConfirmDialog
* chore: remove old ConfirmModal js file. migrated to TS
* dependency wrangling
* remove empty page
* update next links (www)
* First run bump react-data-grid-v7 beta 4
* fix package-lock.json
* more deps wrangling
* update recharts
* update sentry options
* fix some broken things in www
* studio fixes
* fix graphiql
* fix studio build
* fix menu hydration
* small build error
* update turbo
* fix www typescript errors
* docs image codemod
* links codemod docs
* fix docs typescript errors
* move useConsent to ui to prevent circular deps
* Fix links
* Fix homepage
* Fix links
* move studio/ to apps/
* Revert "move studio/ to apps/"
This reverts commit 1b0a985fcb.
* disable outputFileTracingRoot
* remove outputFileTracingRoot
* fix homepage product cards
* fix PrivacySettings links
* Fix links
* Fix the build for www.
* Minor fixes for JWTGenerator.
* Fix the docs and ui tests.
* Revert codehike back to 0.8.3
* remove ConfirmAlert()
* reenable babel because mobx hates me
* fix blog image and comparison page avatar
* Fix svg errors
* update image synthax
* Fix code hike
* Move the button in a div so that it doesn't inherit its parent height and make the button look weird.
* When components are defined in a component, they get recreated on each render. This makes them unstable in certain cases and causes infinite rerenders.
* Replace the next/head usage with next/script.
* Chore/upgrade next 13 fix table editor (#18431)
* fix table editor styling and fix row deletion logic
* Fix deleting selected rows from header, and fix checkboxes not clearing up
* Fix deleting all rows when filter applied, and fix deleting all rows
* Fix grid size styling issue
* Fix TS error
* Hydration errors
* studio org pages fixes
* fix more studio links
* audit logs fixes
* dropdown icon styling fixes
* fix some images in www
* upgrade to next 14
* try new sentry wrapper for api
* see if this is even invoked
* Revert "see if this is even invoked"
This reverts commit 86c3973ffa.
* Revert "try new sentry wrapper for api"
This reverts commit f67623ebad.
* Revert "upgrade to next 14"
This reverts commit a24dd6131e.
* chore: allow node version 19/20
* Try to fix the LogTable so that it renders with the newer "react-data-grid" version.
* Fix type errors in the log renderer code.
* Fix the replication screen.
* Add the CSS for the GraphiQL.
* Fix SQL editor results rendering
* Lint
* Fix SQL editor results height issue
* Fix auth RLS not invalidating RQ when toggling RLS
* Fix database tables new/edit column regressed
* Fix migrations page empty state if migrations schema not yet created
* Fix API side panel docs temp remove postgrest text for column description PK and FK
* Fix + improve timeout handling in SQL editor
---------
Co-authored-by: Jonathan Summers-Muir <MildTomato@users.noreply.github.com>
Co-authored-by: Joshen Lim <joshenlimek@gmail.com>
Co-authored-by: Francesco Sansalvadore <f.sansalvadore@gmail.com>
Co-authored-by: Terry Sutton <saltcod@gmail.com>
Co-authored-by: Ivan Vasilov <vasilov.ivan@gmail.com>
Co-authored-by: Kevin Grüneberg <k.grueneberg1994@gmail.com>
Danny White