{ pkgs, ... }:
{
  # Notification daemon -- sway has no hyprctl-notify equivalent, mako is
  # the standard minimal choice in the sway ecosystem (used below and by
  # battery-monitor.nix via plain notify-send).
  services.mako.enable = true;

  wayland.windowManager.sway = {
    enable = true;
    wrapperFeatures.gtk = true;
    # The generated config references a wallpaper under the user's home
    # directory, which doesn't exist in the Nix build sandbox -- sway's
    # own build-time config validation fails on that even though the
    # config is fine at actual runtime. Documented, expected workaround
    # (straight from the error message this hits without it).
    checkConfig = false;
    config = {
      modifier = "Mod4";
      terminal = "kitty";

      output = {
        "eDP-1" = {
          resolution = "1920x1080@60Hz";
          position = "0,0";
        };
        "HDMI-A-2" = {
          resolution = "1920x1080@60Hz";
          position = "1920,0";
        };
        "*" = {
          bg = "/home/builder/wallpapers/white.png fill";
        };
      };

      input = {
        "type:keyboard" = {
          xkb_layout = "de";
          xkb_options = "ctrl:nocaps";
        };
        "type:touchpad" = {
          natural_scroll = "disabled";
        };
      };

      # Only the plain workspace-switching behaviour lukas actually asked
      # for, plus straightforward ports of the app launchers already in
      # use. Dropped versus the old hyprland.nix: the clock toggle widget
      # and light/dark theme-toggle script (both hyprctl-specific,
      # explicitly out of scope -- "brauche kein Hyprland, Workspaces
      # reichen"), waybar/tofi autostart (was already commented out for
      # waybar; tofi itself still works under sway if wanted later).
      keybindings =
        let
          modifier = "Mod4";
        in
        (
          {
            "${modifier}+q" = "kill";
            "${modifier}+Shift+e" = "exec swaymsg exit";
            "${modifier}+Tab" = "focus next";

            "${modifier}+p" = "exec keepassxc";
            "${modifier}+a" = "exec kitty";
            "${modifier}+n" = "exec kitty -e v";
            "${modifier}+m" = "exec alacritty -e aerc";
            "${modifier}+b" = "exec kitty -e btop";

            "${modifier}+o" = ''exec qutebrowser --target window --set tabs.show never --set statusbar.show in-mode --set scrolling.bar never desk.0ff.space'';
            "${modifier}+f" = "exec qutebrowser";

            "Print" = ''exec grim -g "$(slurp)" - | wl-copy'';

            "XF86AudioLowerVolume" = "exec wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%-";
            "XF86AudioRaiseVolume" = "exec wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%+";
            "XF86MonBrightnessDown" = "exec brightnessctl set 5%-";
            "XF86MonBrightnessUp" = "exec brightnessctl set 5%+";

            "${modifier}+u" = ''exec bash -c 'udiskie-umount -a && rm -f ~/juno && rm -f ~/LukasDisk && notify-send "💿 Laufwerke ausgehängt" || notify-send "⚠️ Aushängen fehlgeschlagen"' '';
            "${modifier}+Shift+u" = ''exec bash -c 'udiskie-mount -a && ln -sfn /run/media/builder/juno ~/juno && ln -sfn /run/media/builder/LukasDisk ~/LukasDisk && notify-send "📁 Laufwerke eingehängt" || notify-send "⚠️ Einhängen fehlgeschlagen"' '';
          }
          // (
            # Workspace bindings 1-9, same dynamic generation as before
            builtins.listToAttrs (
              builtins.genList (
                i:
                let
                  ws = builtins.toString (i + 1);
                in
                {
                  name = "${modifier}+${ws}";
                  value = "workspace number ${ws}";
                }
              ) 9
            )
          )
          // (
            builtins.listToAttrs (
              builtins.genList (
                i:
                let
                  ws = builtins.toString (i + 1);
                in
                {
                  name = "${modifier}+Shift+${ws}";
                  value = "move container to workspace number ${ws}";
                }
              ) 9
            )
          )
        );
    };
  };
}