Astra OS is a modern, lightweight, web-based operating system interface built from the ground up using pure HTML5, CSS3, and modern Vanilla JavaScript, designed to deliver an immersive glassmorphic desktop environment directly inside the web browser. Without relying on heavy external libraries or front-end frameworks, Astra OS combines high visual elegance with lightning-fast performance, featuring an interactive system boot sequence with dynamic terminal logs, a smooth window management engine supporting drag-and-drop mechanics with active depth layering, real-time desktop widgets including an analog/digital clock and an interactive calendar, integrated mini-applications such as Notes and a functional Calculator, a customizable desktop context menu, and a sleek top status bar alongside an interactive dock.