Since you're new at this I'll try not to taunt you too much
... here's your first hint at the problem. Look in the .LOG file you included and you'll see
Error: Entity 0, Brush 668, Side 7: has a coplanar plane at (-482, -562, -808), texture ~LAB1_COMP7B
Error: brush with coplanar faces
Description: The map has a problem which must be fixed
Howto Fix: Check the file ZHLTProblems.html for a detailed explanation of this problem
Error: Entity 0, Brush 669, Side 7: has a coplanar plane at (-482, -554, -808), texture ~LAB1_COMP7B
(2.58 seconds)
Open the map, hit ctrl-shift-G (or click Map/Go to brush number) and go to the brushes reported in the error message, they are in the elevator shaft. I don't know what you did to them, but the map compiled fine with them gone. I didn't bother with a full compile so I don't know about the lighting... once I saw the error in the log I knew where to look.
Great job for a beginner! Two helpful words that will make your hallways much nicer,
"clip brushes". There isn't a tutorial on them here but there is a lot of talk in the forums or you can
google. Happy Mapping!