Keep the error state visible till fixed

Keeping the error state visible while the user is making corrections is important because:

• It maintains context about what needs to be fixed
• Users don't have to remember what the error was
• It provides immediate feedback as they work toward a solution
• It prevents confusion about whether the error has actually been resolved

The field should only return to its default or success state when the input actually becomes valid, not just when the user starts typing again. For example, if a password is too short, the error state and message should persist until the password reaches the minimum length requirement.

The only visual change during user input should be real-time validation feedback, like checkmarks appearing next to requirements as they're met.