Learn how to create a stunning glassmorphism button effect with mouse tracking in this comprehensive HTML, CSS, and JavaScript tutorial. Explore techniques for crafting hover states, utilizing pseudo-elements, and solving stacking context issues. Dive into locally scoped custom properties, blurred effects, and granular controls. Master the creation of pressed states, add grainy textures, and implement outlines. Delve into JavaScript to enable mouse tracking, smooth transitions, and movement limitations for the pseudo-element. Follow along step-by-step to enhance your web design skills and create visually appealing, interactive buttons that respond to user input.