JHONY-X/MY_EXPENSE_TRACKER — reverse-engineered prompt

Build me a polished Smart Expense Tracker app in Flutter that works on Android and web, with iOS support if it’s easy to include. I want users to sign in with Google, then add income and expenses, choose categories, see their recent transactions, and view simple visual stats showing where their money is going.

Make it feel premium and modern, with light and dark mode, nice cards, smooth animations, and a layout that looks good on phones, tablets, and browsers. The app should keep data available when offline and sync it securely with Firebase when online.

Please also include an admin area where an admin can see user activity logs, manage user roles, block or unblock users, and export logs as JSON text. Set up the screens, state handling, Firebase auth and Firestore data flow, and basic tests if possible. Look up current Flutter and Firebase docs online if you need to.