{
  config,
  lib,
  pkgs,
  ...
}:

{
  # Caps Lock as Escape for console/tty and Wayland
  console.useXkbConfig = true;
  services.xserver.xkb = {
    layout = "us";
    options = "caps:escape";
  };

  xdg.portal = {
    enable = true;
    extraPortals = lib.mkForce [
      pkgs.xdg-desktop-portal-wlr
      pkgs.xdg-desktop-portal-gtk
    ];
    config.common.default = [
      "wlr"
      "gtk"
    ];
  };

  services.greetd = {
    enable = true;
    vt = 2;
    settings = {
      default_session = {
        command = "${pkgs.greetd.tuigreet}/bin/tuigreet --time --remember --remember-session --cmd '${pkgs.dbus}/bin/dbus-run-session ${pkgs.sway}/bin/sway'";
        user = "greeter";
      };
    };
  };

  # Core packages and tools
  environment.systemPackages = with pkgs; [
    wl-clipboard
    wl-clip-persist
    wofi # application launcher
    nemo # file manager (x11)
    feh # image viewer (x11)
    networkmanager
    upower
    brightnessctl
    wireplumber
    libgtop
    bluez
    power-profiles-daemon
    grim
    slurp
    wf-recorder
    btop
    pavucontrol
  ];

  services.blueman.enable = config.hardware.bluetooth.enable;

  programs.sway = {
    enable = true;
    wrapperFeatures.gtk = true; # include GTK integration env
    extraPackages = with pkgs; [
      xwayland # allow legacy X11 apps
    ];
  };

  # Enable PipeWire + WirePlumber so xdg-desktop-portal can do screencast
  services.pipewire = {
    enable = true;
    # Enable WirePlumber session manager via the pipewire module option
    wireplumber = {
      enable = true;
    };
  };

  # Ensure graphics/OpenGL are enabled so Sway uses GPU-backed rendering
  hardware.graphics = {
    enable = true;
    # extraPackages can be used to force vendor-specific mesa/drivers if needed
    # Keep defaults; Sway runs fine with mesa in system
    # extraPackages = with pkgs; [];
  };

  # Environment variables
  environment.sessionVariables = lib.mkMerge [
    {
      GTK_THEME = "Adwaita:dark";
      XDG_SESSION_TYPE = "wayland";
      XDG_CURRENT_DESKTOP = "sway";
      XDG_SESSION_DESKTOP = "sway";
      # prefer EGL renderer (can be changed back to "auto" if needed)
      WLR_RENDERER = "egl";

      # Tell apps to run native wayland
      NIXOS_OZONE_WL = "1";
      ELECTRON_OZONE_PLATFORM_HINT = "wayland";
      ELECTRON_ENABLE_WAYLAND = "1";
      ELECTRON_DISABLE_SANDBOX = "0";
      GDK_BACKEND = "wayland,x11"; # GTK
      QT_QPA_PLATFORM = "wayland;xcb"; # Qt 5/6
      MOZ_ENABLE_WAYLAND = "1"; # Firefox
      SDL_VIDEODRIVER = "wayland"; # SDL apps/games
      CLUTTER_BACKEND = "wayland";
    }
  ];

  # Qt theming
  qt = {
    enable = true;
    platformTheme = "gtk2";
    style = "adwaita-dark";
  };
}