In the Generate ABHA section, if a user enters an Aadhaar number with less than 12 digits, there is no clear indication of the error. A red highlight or validation message should be displayed when an invalid Aadhaar number is entered.

Requirement:

• If the user enters an Aadhaar number with fewer than 12 digits, the input field should be highlighted in red.
• A validation message (e.g., "Aadhaar number must be 12 digits") should appear below the input field.

Steps to Reproduce:

1. Navigate to the Generate ABHA section.
2. Enter an Aadhaar number with fewer than 12 digits.
3. Observe that there is no clear validation highlight.

Expected Result:

• The input field should be highlighted in red if the Aadhaar number is less than 12 digits.

Actual Result:

• No clear indication or highlight is shown when entering an Aadhaar number with less than 12 digits.