diff --git a/desktop-environment/window-manager/dark-mode.nix b/desktop-environment/window-manager/dark-mode.nix
new file mode 100644
index 0000000..8b3ffad
--- /dev/null
+++ b/desktop-environment/window-manager/dark-mode.nix
@@ -0,0 +1,18 @@
+{ pkgs, ... }:
+{
+  xdg.portal = {
+    enable = true;
+
+    extraPortals = with pkgs; [
+      xdg-desktop-portal-gtk
+      xdg-desktop-portal-hyprland
+    ];
+
+    config.common.default = "*";
+  };
+
+  environment.sessionVariables = {
+    GTK_THEME = "Adwaita:dark";
+    COLORSCHEME = "prefer-dark";
+  };
+}