diff --git a/src/app.scss b/src/app.scss
index 5a94ca0..a8f4ee3 100644
--- a/src/app.scss
+++ b/src/app.scss
@@ -6,12 +6,24 @@
 	--primary-hover: #0288d1;
 	--primary-focus: rgba(3, 155, 229, 0.125);
 	--primary-inverse: #fff;
-}
-
-/* Pink (Common styles) */
-:root {
 	--form-element-active-border-color: var(--primary);
 	--form-element-focus-color: var(--primary-focus);
 	--switch-color: var(--primary-inverse);
 	--switch-checked-background-color: var(--primary);
 }
+
+:root:not([data-theme='dark']) {
+	--muted-border-color: #c99a2c;
+}
+
+@media only screen and (prefers-color-scheme: dark) {
+	:root:not([data-theme]) {
+		--background-color: #11191f;
+		--background-color: #0a1425;
+		--card-sectionning-background-color: #18232c;
+		--card-sectionning-background-color: #243043;
+		--card-background-color: #141e26;
+		--card-background-color: #0c192e;
+		--card-border-color: #c99a2c;
+	}
+}