Glassmorphism is a UI design style that mimics the look of frosted or blurred glass. It’s all about creating a sense of depth, layering, and lightness using:
Blurry backgrounds (usually semi-transparent)
Subtle borders (often white or light-colored)
Soft shadows
Vibrant background colors or gradients behind the glass layer
Transparency + Backdrop blur
You’ve probably seen it in Apple’s macOS, iOS, Windows Fluent Design, or apps like Vercel, Linear, or Notion themes.