Ask HN: How do you record your midnight thoughts?

Not sure how to describe this, but almost every day around midnight when I lay in bed I fall into a transient and ephemeral state of uninterrupted thought. My mind is churning thoughts, I have amazing ideas, I write whole chapters in my head, it is like a superpower. But as soon as I decide to get up and record my thoughts, everything stops and disappears.

I tried pen and paper, speech notes, scribbles, drawings, and finally settled on just letting my thoughts flow and trying to recreate just 10% of it the next morning when I am at my desk again.

I assume many people experience something similar, so I want to ask how you deal with it? Have you found a way to record and write it down?