Add support for the dark mode

Author: dtdesign

mkdocs.yml

@@ -6,7 +6,24 @@ theme:
   logo: assets/logo.png
   favicon: assets/default.favicon.ico
   palette:
-    primary: teal
+    - media: "(prefers-color-scheme)"
+      toggle:
+        icon: material/link
+        name: Switch to light mode
+    - media: "(prefers-color-scheme: light)"
+      scheme: default
+      primary: teal
+      accent: indigo
+      toggle:
+        icon: material/toggle-switch
+        name: Switch to dark mode
+    - media: "(prefers-color-scheme: dark)"
+      scheme: slate
+      primary: teal
+      accent: indigo
+      toggle:
+        icon: material/toggle-switch-off
+        name: Switch to system preference
   font: false
   features:
     - navigation.tracking