Reusing the popup form for login and sign-up; styling the 404
The form you already built for booking is the form for sign-up. Copy it, change the workflow.
Create the sign-up page, delete the defaults, paste the popup's inner group, wire it to Sign the user up; same for login with Log the user in; a reset-password workflow uses Bubble's reset_password page. Bubble ships a default 404 page - style it, then type a wrong URL to test, so a lost visitor lands somewhere helpful. Left for later lessons: the 'show all' page and host/guest dashboards.
Closes the account loop opened by the booking flow.