Link to your Game Design Doc on Google Drive.
https://docs.google.com/document/d/1k-saKWcfxbMd8EmomZcY9Gaq2Yxc0hfvPJ2__29DB6s/edit?usp=sharing

Have you checked that your GDD is publicly accessible ?
Yes

Is your game set to public on itch.io so we can see it?
Yes

Summarise your game!
Guardian AI is a shooter strategy game where you play as an AI weapons system, and must selectively activate and deactivate its various subsystems to combat threats coming from different lanes (air, ground, cyber). You must route power between the subsystems to focus resources on the greatest threats.

Controls:

Cyber Button (left click button, A, left arrow, or gamepad left button)
Enemies will periodically hack into your subsystems. When this happens the system being hacked will flash yellow and a warning sound will play. After a few seconds you will be locked out of this subsystem, and the button frame will flash red to indicate a shutdown. To restore it, you must activate the cyber button to repair the subsystem.

Ground Button (left click button, S, down arrow, or gamepad bottom button)
Enemies attacking from the ground can be destroyed with shots fired from the ground cannon. Activating this button will fire the ground cannon on repeat until it is disabled.

Anti-Air Button (left click button, D, right arrow, or gamepad right button)
Enemies attacking from the air can be destroyed with shots fired from the anti-air cannon. Activating this button will fire the anti-air cannon on repeat until it is disabled.

Power Management:
While all three subsystems can be online simultaneously, it will significantly reduce the effectiveness of each subsystem. Hacks will take longer to resolve, and weapons will fire at a significantly slower rate.
Subsystems function at peak performance when only one is powered at a time, and their performance is reduced for each additional system that is active. Note that the air/ground subsystems need to be online to reload the next cannon shot, so disabling the subsystem immediately after firing will not speed up its firing rate.

Please explain how your game fits the theme:
This is a literal take on the theme, where players embody the Guardian AI defense system in charge of defending the city from enemy invasion.