Master Python GUIs: Build a Sleek Countdown Timer with Tkinter ⏱️ Introduction Are you tired of boring, command-line scripts? It’s time to level up your Python skills by building a Graphical User Interface (GUI). Today, we are building a "Focus Timer" —a fully functional, aesthetically pleasing countdown timer using Python’s built-in Tkinter library. Whether you want to use the Pomodoro technique or just need a reminder to stretch, this project is the perfect way to learn about event loops, UI styling, and state management in Python. Why This Project Rocks Modern UI: We ditch the default "gray" look for a sleek Dark Mode. User-Friendly: Simple input fields for Hours, Minutes, and Seconds. Real-World Logic: Learn how to handle time without freezing your app using the .after() method. The Code Copy the code below into your favorite IDE (like VS Code or PyCharm) and run it. Python import tkinter as tk from tkinter import messagebox class AttractiveTimer :...