{ config, pkgs, ... }:

{
  # Enable GTK and Qt theming
  programs.gtk.enable = true;
  programs.qt.enable = true;

  # Install the Adwaita icon theme
  environment.systemPackages = with pkgs; [
    adwaita-icon-theme
  ];

  # Set GTK theme and icon theme via environment variables
  environment.sessionVariables = {
    GTK_THEME = "Adwaita:dark";
    GTK_ICON_THEME = "Adwaita";
    QT_STYLE_OVERRIDE = "gtk2";
    QT_QPA_PLATFORMTHEME = "gtk2";
  };

  # For Qt5/Qt6 apps
  environment.etc."xdg/qt5ct/qss/qt5ct.qss".text = ''
    /* Set dark palette for Qt5 apps */
    @import "dark";
  '';
}