set $Locker i3lock && sleep 1

set $mode_system (l) Заставка, (e) Выйти, (s) Спящий режим, (h) Гибернация, (r) Рестарт, (Shift+s) Выключить
mode "$mode_system" {
bindsym l exec --no-startup-id $Locker, mode "default"
bindsym e exec --no-startup-id i3-msg exit, mode "default"
bindsym s exec --no-startup-id $Locker && systemctl suspend, mode "default"
bindsym h exec --no-startup-id $Locker && systemctl hibernate, mode "default"
bindsym r exec --no-startup-id systemctl reboot, mode "default"
bindsym Shift+s exec --no-startup-id systemctl poweroff -i, mode "default"

# back to normal: Enter or Escape
bindsym Return mode "default"
bindsym Escape mode "default"
}

bindsym $mod+Pause mode "$mode_system"