diff --git a/apps/theming/css/default.css b/apps/theming/css/default.css
index 97d8a6e2eeebf..11041c5c4c77f 100644
--- a/apps/theming/css/default.css
+++ b/apps/theming/css/default.css
@@ -57,12 +57,19 @@
   /** Border width for input elements such as text fields and selects */
   --border-width-input: 1px;
   --border-width-input-focused: 2px;
-  --border-radius: 3px;
-  --border-radius-large: 10px;
+
+  /* Border radii (new values) */
+  --border-radius-small: 4px; /* For smaller elements */
+  --border-radius-element: 8px; /* For interactive elements such as buttons, input, navigation and list items */
+  --border-radius-container: 12px; /* For smaller containers like action menus */
+  --border-radius-container-large: 16px; /* For larger containers like body or modals */
+
+  /* Border radii (deprecated) */
+  --border-radius: var(--border-radius-small);
+  --border-radius-large: var(--border-radius-element);
   --border-radius-rounded: 28px;
-  /* Border radius of interactive elements such as buttons, input, navigation and list items. Available since Nextcloud 30. */
-  --border-radius-element: 8px;
   --border-radius-pill: 100px;
+
   --default-clickable-area: 34px;
   --clickable-area-large: 48px;
   --clickable-area-small: 24px;
@@ -73,7 +80,7 @@
   --sidebar-min-width: 300px;
   --sidebar-max-width: 500px;
   /* Border radius of the body container */
-  --body-container-radius: calc(var(--default-grid-baseline) * 3);
+  --body-container-radius: var(--border-radius-container-large);
   /* Margin of the body container */
   --body-container-margin: calc(var(--default-grid-baseline) * 2);
   /* Height of the body container to fully fill the view port */
diff --git a/apps/theming/lib/Themes/DefaultTheme.php b/apps/theming/lib/Themes/DefaultTheme.php
index ca4df747421c2..47a54eb0e1a89 100644
--- a/apps/theming/lib/Themes/DefaultTheme.php
+++ b/apps/theming/lib/Themes/DefaultTheme.php
@@ -172,11 +172,17 @@ public function getCSSVariables(): array {
 			// Border width for input elements such as text fields and selects
 			'--border-width-input' => '1px',
 			'--border-width-input-focused' => '2px',
-			'--border-radius' => '3px',
-			'--border-radius-large' => '10px',
+
+			// Border radii (new values)
+			'--border-radius-small' => '4px', // For smaller elements
+			'--border-radius-element' => '8px', // For interactive elements such as buttons, input, navigation and list items
+			'--border-radius-container' => '12px', // For smaller containers like action menus
+			'--border-radius-container-large' => '16px', // For bigger containers like body or modals
+
+			// Border radii (deprecated)
+			'--border-radius' => 'var(--border-radius-small)',
+			'--border-radius-large' => 'var(--border-radius-element)',
 			'--border-radius-rounded' => '28px',
-			'--border-radius-element' => '8px',
-			// pill-style button, value is large so big buttons also have correct roundness
 			'--border-radius-pill' => '100px',
 
 			'--default-clickable-area' => '34px',
@@ -193,7 +199,7 @@ public function getCSSVariables(): array {
 			'--sidebar-max-width' => '500px',
 
 			// Border radius of the body container
-			'--body-container-radius' => 'calc(var(--default-grid-baseline) * 3)',
+			'--body-container-radius' => 'var(--border-radius-container-large)',
 			// Margin of the body container
 			'--body-container-margin' => 'calc(var(--default-grid-baseline) * 2)',
 			// Height of the body container to fully fill the view port
diff --git a/apps/theming/tests/Themes/DefaultThemeTest.php b/apps/theming/tests/Themes/DefaultThemeTest.php
index 91b7d8887d7ad..d11237e774cb4 100644
--- a/apps/theming/tests/Themes/DefaultThemeTest.php
+++ b/apps/theming/tests/Themes/DefaultThemeTest.php
@@ -152,6 +152,8 @@ public function testThemindDisabledFallbackCss() {
 		$fallbackCss = file_get_contents(__DIR__ . '/../../css/default.css');
 		// Remove comments
 		$fallbackCss = preg_replace('/\s*\/\*[\s\S]*?\*\//m', '', $fallbackCss);
+		// Remove blank lines
+		$fallbackCss = preg_replace('/\s*\n\n/', "\n", $fallbackCss);
 
 		$this->assertEquals($css, $fallbackCss);
 	}