Reorganize modules

modules/home/wm/gtk.nix

@@ -0,0 +1,27 @@
+{ pkgs, ... }:
+
+{
+  gtk = {
+    enable = true;
+    theme = {
+      name = "Orchis-dark";
+      package = pkgs.orchis-theme;
+    };
+    iconTheme = {
+      name = "Adwaita";
+      package = pkgs.adwaita-icon-theme;
+    };
+    cursorTheme = {
+      name = "Adwaita";
+      package = pkgs.adwaita-icon-theme;
+    };
+    gtk4.theme = null;
+  };
+
+  home.sessionVariables = {
+    GTK_THEME = "Adwaita:dark"; # GTK apps dark theme
+    MOZ_GTK_THEME = "Adwaita:dark"; # Firefox respects this
+    GDK_DARK_THEME = "1"; # GTK4 apps dark mode
+    CHROME_FORCE_DARK_MODE = "1"; # Chromium / Chrome dark mode
+  };
+}