def place_order(self):
        total_cost = 0
        order_summary = "Order Summary:\n"
        currency = self.currency_var.get()
        symbol = "₹" if currency == "INR" else "$"
        rate = self.exchange_rate if currency == "INR" else 1

        for item, entry in self.menu_quantities.items():
            quantity = entry.get()
            if quantity.isdigit():
                quantity = int(quantity)
                price = self.menu_items[item] * rate
                cost = quantity * price
                total_cost += cost

                if quantity > 0:
                    order_summary += (
                        f"{item}: {quantity} x {symbol}{price} = {symbol}{cost}\n"
                    )

        if total_cost > 0:
            order_summary += f"\nTotal Cost: {symbol}{total_cost}"
            messagebox.showinfo("Order Placed", order_summary)
        else:
            messagebox.showerror("Error", "Please order at least one item.")

# Main block to run the app
if __name__ == "__main__":
    root = tk.Tk()
    app = RestaurantOrderManagement(root)
    root.geometry("800x600")  # Set the size of the window
    root.mainloop()           # Start the GUI loop