Fixed Deposit Calculator

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This project is a simple Fixed Deposit (FD) Calculator built using Flutter. The app allows users to calculate the interest and total amount earned on a fixed deposit over a specified period based on the deposit amount, interest rate, and duration.

Key Features:

• Input Validation: Ensures valid numbers for deposit amount, interest rate, and duration, with error messages for invalid inputs.
• UI Design: Utilizes the Google Fonts package for better typography and follows Material3 design principles.
• Interest Calculation: Computes interest earned and total amount after entering deposit details.
• Responsive Layout: Uses a scrollable layout to avoid overflow issues when the keyboard appears.
• Reusable Input Form: Modular form fields with custom widgets for consistent input handling.

Technical Highlights:

• State Management: Uses StatefulWidget for real-time updates as calculations are performed.
• Button Styling: Custom button styles using ButtonStyle and MaterialStateProperty.
• Validation & Error Handling: Includes validation and error messages to improve the user experience.

This app is ideal for individuals looking for a quick and user-friendly way to calculate potential earnings from fixed deposits.