iOS Liquid Glass Reference API reference for the Liquid Glass design system (iOS 26+): glass effects, containers, morphing transitions, and related system behaviors. This documents what the system provides — design direction is yours. When to Use - Implementing glass materials, modifiers, or - Navigation surfaces that use system glass (tabs, toolbars, sheets) - Checking how glass adapts to accessibility settings - Creating app icons with Icon Composer Apple's Stated Design Principles Apple describes Liquid Glass with three principles (reference, not a mandate): | Principle | Description | |--…