From 3c3dd0fb3799da6f0ce340eda53910cdb4c07fd8 Mon Sep 17 00:00:00 2001
From: Mathias Jakobsen <mathias.jakobsen@overleaf.com>
Date: Tue, 30 Jun 2026 16:52:09 +0100
Subject: [PATCH] Merge pull request #35037 from
 overleaf/mj-themed-modals-again

[web] Add support for dark mode modals

GitOrigin-RevId: 34770a6f91d6a331cfaccf86c7dc1a5d151ad25b
---
 .../Features/Project/ProjectController.mjs    |  1 +
 .../components/settings-modal.tsx             |  3 ++
 .../js/shared/components/ol/ol-modal.tsx      | 17 ++++++-
 .../stylesheets/components/modal.scss         | 23 ++++++++-
 .../stylesheets/pages/editor/settings.scss    | 48 ++++++++++++++-----
 5 files changed, 78 insertions(+), 14 deletions(-)

diff --git a/services/web/app/src/Features/Project/ProjectController.mjs b/services/web/app/src/Features/Project/ProjectController.mjs
index 8658129a8f..e20621b0ec 100644
--- a/services/web/app/src/Features/Project/ProjectController.mjs
+++ b/services/web/app/src/Features/Project/ProjectController.mjs
@@ -497,6 +497,7 @@ const _ProjectController = {
       'ai-disabled-collaborators',
       'group-link-sharing',
       'compile-with-checkpoint',
+      'themed-modals',
     ].filter(Boolean)
 
     const getUserValues = async userId =>
diff --git a/services/web/frontend/js/features/ide-settings/components/settings-modal.tsx b/services/web/frontend/js/features/ide-settings/components/settings-modal.tsx
index e6d2605687..fe2a7c030a 100644
--- a/services/web/frontend/js/features/ide-settings/components/settings-modal.tsx
+++ b/services/web/frontend/js/features/ide-settings/components/settings-modal.tsx
@@ -12,6 +12,7 @@ import {
 } from '../context/settings-modal-context'
 import useFocusOnSetting from '../hooks/use-focus-on-setting'
 import useOpenSettingsViaQueryParam from '../hooks/use-open-settings-via-query-param'
+import { useFeatureFlag } from '@/shared/context/split-test-context'
 
 const SettingsModalWrapper = () => {
   return (
@@ -25,6 +26,7 @@ const SettingsModal = () => {
   const { t } = useTranslation()
   const { show, setShow, settingsTabs, activeTab, setActiveTab } =
     useSettingsModalContext()
+  const themed = useFeatureFlag('themed-modals')
 
   useFocusOnSetting()
   useOpenSettingsViaQueryParam()
@@ -39,6 +41,7 @@ const SettingsModal = () => {
           ? 'ide-settings-modal-transparent-backdrop'
           : undefined
       }
+      themed={themed}
     >
       <OLModalHeader>
         <OLModalTitle>{t('settings')}</OLModalTitle>
diff --git a/services/web/frontend/js/shared/components/ol/ol-modal.tsx b/services/web/frontend/js/shared/components/ol/ol-modal.tsx
index c8cd502e0f..0aacc257e6 100644
--- a/services/web/frontend/js/shared/components/ol/ol-modal.tsx
+++ b/services/web/frontend/js/shared/components/ol/ol-modal.tsx
@@ -9,11 +9,14 @@ import {
 import { ModalBodyProps } from 'react-bootstrap/ModalBody'
 import type { Options as FocusTrapOptions } from 'focus-trap'
 import { useTranslation } from 'react-i18next'
+import classNames from 'classnames'
 
 type OLModalProps = ModalProps & {
   size?: 'sm' | 'lg'
   onHide: () => void
   show?: boolean
+  themed?: boolean
+  className?: string
 } & Pick<
     FocusTrapOptions,
     | 'escapeDeactivates'
@@ -34,10 +37,22 @@ export function OLModal({
   escapeDeactivates = false, // Let React-Bootstrap Modal handle Escape key to avoid double Escape key handling
   clickOutsideDeactivates = true, // Allow focus trap to deactivate on outside click and let React-Bootstrap Modal handle it
   initialFocus,
+  themed = false,
+  className,
+  backdropClassName,
   ...props
 }: OLModalProps) {
   return (
-    <Modal show={show} onHide={onHide} {...props}>
+    <Modal
+      show={show}
+      onHide={onHide}
+      className={classNames({ 'modal-themed': themed }, className)}
+      backdropClassName={classNames(
+        { 'modal-backdrop-themed': themed },
+        backdropClassName
+      )}
+      {...props}
+    >
       <FocusTrap
         active={show}
         focusTrapOptions={{
diff --git a/services/web/frontend/stylesheets/components/modal.scss b/services/web/frontend/stylesheets/components/modal.scss
index 3292325d36..99c3f9d666 100644
--- a/services/web/frontend/stylesheets/components/modal.scss
+++ b/services/web/frontend/stylesheets/components/modal.scss
@@ -3,7 +3,7 @@
 }
 
 @include theme('default') {
-  .modal {
+  .modal:not(.modal-themed) {
     // Until we add a dark modal version, all core components in modals should use light theme
     @include light-dropdown-menu;
     @include light-notification;
@@ -18,6 +18,27 @@
       @include light-buttons;
     }
   }
+
+  .modal-themed {
+    --bs-modal-color: var(--content-primary-dark);
+    --bs-modal-bg: var(--bg-dark-primary);
+    --bs-modal-border-color: var(--border-divider-dark);
+    --bs-modal-box-shadow: 0 0.5rem 1rem rgb(0 0 0 / 40%);
+    --bs-modal-header-border-color: var(--border-divider-dark);
+    --bs-modal-footer-bg: var(--bg-dark-secondary);
+    --bs-modal-footer-border-color: var(--border-divider-dark);
+    --bs-heading-color: var(--content-primary-dark);
+
+    color-scheme: dark;
+
+    .modal-header .btn-close {
+      --bs-btn-close-bg: url('data:image/svg+xml,%3csvg xmlns=%27http://www.w3.org/2000/svg%27 viewBox=%270 0 16 16%27 fill=%27%23fff%27%3e%3cpath d=%27M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414%27/%3e%3c/svg%3e');
+    }
+  }
+
+  .modal-backdrop-themed {
+    background-color: var(--neutral-70);
+  }
 }
 
 @include media-breakpoint-up(sm) {
diff --git a/services/web/frontend/stylesheets/pages/editor/settings.scss b/services/web/frontend/stylesheets/pages/editor/settings.scss
index 5484fe2d08..182ed0f1ae 100644
--- a/services/web/frontend/stylesheets/pages/editor/settings.scss
+++ b/services/web/frontend/stylesheets/pages/editor/settings.scss
@@ -1,3 +1,27 @@
+:root {
+  --ide-settings-text-color: var(--content-primary);
+  --ide-settings-section-title-color: var(--content-secondary);
+  --ide-settings-description-color: var(--content-secondary);
+  --ide-settings-section-title-border-color: var(--border-divider);
+  --ide-settings-link-hover-color: var(--link-ui-hover);
+  --ide-settings-link-hover-bg-color: var(--bg-light-secondary);
+  --ide-settings-link-active-color: var(--green-70);
+  --ide-settings-link-active-bg-color: var(--bg-accent-03);
+}
+
+@include theme('default') {
+  .modal-themed {
+    --ide-settings-text-color: var(--content-primary-dark);
+    --ide-settings-section-title-color: var(--content-secondary-dark);
+    --ide-settings-description-color: var(--content-secondary-dark);
+    --ide-settings-section-title-border-color: var(--border-divider-dark);
+    --ide-settings-link-hover-color: var(--link-ui-hover-dark);
+    --ide-settings-link-hover-bg-color: var(--bg-dark-secondary);
+    --ide-settings-link-active-color: var(--green-10);
+    --ide-settings-link-active-bg-color: var(--green-70);
+  }
+}
+
 .ide-settings-tab-nav.nav {
   width: 300px;
   border-right: var(--bs-modal-header-border-width) solid
@@ -25,7 +49,7 @@
   align-items: flex-start;
   flex-direction: row;
   gap: var(--spacing-02);
-  color: var(--content-primary);
+  color: var(--ide-settings-text-color);
   padding: var(--spacing-02);
   border-radius: var(--border-radius-base);
   font-size: var(--font-size-02);
@@ -33,24 +57,24 @@
   text-decoration: none;
 
   &:visited {
-    color: var(--content-primary);
+    color: var(--ide-settings-text-color);
   }
 
   &.ide-settings-tab-link-button:hover:not(.active),
   &.ide-settings-tab-link-button:focus:not(.active) {
-    background-color: var(--bg-light-secondary);
-    color: var(--content-primary);
+    background-color: var(--ide-settings-link-hover-bg-color);
+    color: var(--ide-settings-text-color);
   }
 
   &.ide-settings-tab-link-anchor:hover,
   &.ide-settings-tab-link-anchor:focus {
-    color: var(--link-ui-hover);
-    background-color: var(--bg-light-secondary);
+    color: var(--ide-settings-link-hover-color);
+    background-color: var(--ide-settings-link-hover-bg-color);
   }
 
   &.active {
-    color: var(--green-70);
-    background-color: var(--bg-accent-03);
+    color: var(--ide-settings-link-active-color);
+    background-color: var(--ide-settings-link-active-bg-color);
     font-weight: bold;
   }
 }
@@ -72,11 +96,11 @@
 }
 
 .ide-settings-section-title {
-  color: var(--content-secondary);
+  color: var(--ide-settings-section-title-color);
   font-size: var(--font-size-01);
   line-height: var(--line-height-01);
   padding-bottom: var(--spacing-06);
-  border-bottom: 1px solid var(--border-divider);
+  border-bottom: 1px solid var(--ide-settings-section-title-border-color);
   margin: 0 var(--spacing-04);
 }
 
@@ -99,12 +123,12 @@
 }
 
 .ide-setting-title {
-  color: var(--content-primary);
+  color: var(--ide-settings-text-color);
   font-size: var(--font-size-02);
 }
 
 .ide-setting-description {
-  color: var(--content-secondary);
+  color: var(--ide-settings-description-color);
   font-size: var(--font-size-02);
 }