Trying to use SketchUp to create a layout of my house. Managed to work something together pretty decently, but it looks like I accidentally drew the whole thing on the wrong axis. Using the push/pull tool, extruding the walls visually in the right direction reveals I am actually going negative on their height. Yet from what I can tell, I am extruding up along the solid blue axis, which per SketchUp's own documentation is the one going up (otherwise known as the Z-axis to me).

I'm either viewing this incorrectly, hitting a bug, or I need to flip my model a certain way. But I can't seem to figure out what is going on with flipping and then switching camera angles. I assume that, if I were looking down towards the layout, the model should appear as a light shade of blue, with the underside appearing whire (if I were to look up at it from under the ground (let's pretend I have x-ray vision for a brief moment)).

Thoughts?