Moth or a wasp or something else?

Last night, I was just in my house when I saw
something flying around. It landed on a wall. It
was an insect of some sort. The insect had long, thin
wings, and its body looked like a moth. However, the
wings were rather like the wings of a wasp. Here's a photo.
It was late and dark so I had to use flash, so it is very bright.

I was puzzled. A cross between a moth and a fly? What
could this strange thing be? Again, I need some ID.
Whoever knows what it is, please comment on this
post AND on my Cbox, to tell me its ID.
It had a gray-blue back. Another photo, but closer.

Okay I am so not an insect expert, so I need help.
I hope I see it again......