therealgofrez/lullaby ? reverse-engineered prompt

Build me a small web app called Lullaby that helps people find calming or weirdly interesting YouTube videos to fall asleep to or just explore. I want it to feel cozy and dreamlike, with a dark night mode, soft visuals, and a simple home screen where I can draw a random video or search for things like rain sounds, ambient noise, video essays, or documentaries.

It should use my YouTube API key, search for random or obscure videos, and let me open videos right inside the page. I also want a sleep timer with a countdown, an immersive mode that hides distractions while watching, and an option to send me straight to YouTube instead of staying in the app. Make keyboard shortcuts work too, like Space to draw a new video, N for night mode, and Esc to go back or close settings.

If you need current details for the YouTube embed or API, look up the docs online first.