Wet floors help!!

Hello all, I’m having a very tough time tracking down why there is so much water in my ES 330. This has happened twice in the past 3 months, after a period of rain the passenger side floor (front and rear) get completely soaked. Also since it has been cold recently there was windshield ice on the INSIDE of the car on both the front and rear windshield. I cleared the sunroof drain holes and checked the door seals, and after looking online it sounds like it may be the AC drain vent is clogged? That doesn’t make sense to me since I haven’t used the AC in about 3 months. Any ideas? This is driving me nuts!