Update README.md

README.md

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-# to-do-app
+# To Do App
+
+This is a simple and interactive to-do app built with **Vite** and **React**. The app allows users to create tasks, organize them into categories, and manage their status. You can mark tasks as **done**, set them as **important**, and also edit or delete them. Categories can also be created, edited, or removed to further organize tasks.
+
+Additionally, the app includes a **dark mode** and **light mode** toggle, and all user data (tasks, categories, and theme preference) is stored in **localStorage**, ensuring persistence between sessions.
+
+## Features
+
+- **Task Management**
+  - Add new tasks
+  - Mark tasks as done
+  - Mark tasks as important
+  - Edit or delete tasks
+  - Assign tasks to specific categories
+
+- **Category Management**
+  - Create new categories
+  - Edit or delete existing categories
+
+- **User Experience**
+  - Toggle between **dark** and **light** modes
+  - Responsive design
+  - Easy-to-use interface
+  - Organized view of tasks by category, importance, and completion status
+  - Persistent data storage using **localStorage** (tasks, categories, and selected theme)
+
+## Tech Stack
+
+- **React**: For building the user interface
+- **Vite**: For bundling and running the app
+- **Tailwind CSS**: For styling the app
+- **Zustand**: For state management
+- **React Router**: For handling navigation between different pages
+- **localStorage**: For persisting tasks, categories, and theme data
+
+## Deployment
+
+The To-Do App is deployed and accessible at the following URL:
+
+[To-Do App](https://zahrabayatt.github.io/to-do-app/)
+
+## License
+
+This project is licensed under the MIT License. See the [LICENSE](./LICENSE) file for more details.
+