# BUG-003 — Email without a top-level domain passes validation

- **Priority:** Medium
- **Severity:** Major
- **Environment:** Chrome 128, desktop
- **Steps to reproduce:**
  1. Open the registration form
  2. Fill in all fields with valid data
  3. Enter `user@mail` in the "Email" field (no `.com`, `.net`, etc.)
  4. Click "Create account"
- **Expected result:** The form shows the error "Please enter a valid email address"
- **Actual result:** The form accepts the address as valid; registration succeeds
- **Notes:** The regular expression only checks for the presence of `@`, but does not check for a top-level domain (a dot after `@`)