Hey!

There is no direct Night Train from Madrid to Paris :/

But there is a Night Train from Port-Bou (Border France/Spain) to Paris Austerlitz (why it isn't on the railplanner app?)

So you can go with trains from the renfe to the Border (there are many Highspeed trains from Madrid Puerta to Atocha to Barcelona Sants, and from there you can take a regular train to Port-Bou)

Hope it was helpful :)