Car wont start. No electric. No nothing

Ok so left work drove to friends house drove to get lunch. Place we wanted to go is apparently closed on Tuesdays. Where my luck just starts. Walk back to car turn key lights turn on cant remember if the carstarted but then out of nowhere no nothing car just flatlined. No power no nothing key fob wont even lock doors. Doors dont lock when press button. Checked battery it is good. Any input would be greatly appreciated sry if answer to this was posted elsewhere

Also it's a 2011 tdi