💻 Coding & Development Prompts

Write JavaScript form validation for a registration form with: email (valid format), password (min 8 chars, 1 uppercase, 1 number, 1 special char), confirm password (must match), phone number (valid format), age (18-120). Show: real-time validation on input, error messages below each field, disable submit button until all valid, success message on valid submit. Use vanilla JavaScript, no libraries.