ReddRadar
Agent skill
liquid-glass
Apple Liquid Glass design system. Use when building UI with translucent, depth-aware glass morphism following Apple's design language. Provides CSS tokens, component patterns, dark/light mode, and animation specs.
Install this agent skill to your Project
npx add-skill https://github.com/telagod/code-abyss/tree/main/skills/domains/frontend-design/liquid-glass
SKILL.md
Liquid Glass Design System
Apple-inspired translucent glass UI with depth, refraction, and ambient light response.
Core Principles
- Translucency — Surfaces reveal layered content beneath via backdrop blur
- Depth — Elements float on distinct z-layers with realistic shadows
- Ambient Response — Glass tints shift based on underlying content color
- Minimal Chrome — Borders are subtle; shape and blur define boundaries
- Motion — Transitions feel physical: spring-based, with inertia
Usage
Import the token file in your CSS:
@import 'references/tokens.css';
CSS Tokens Reference
All tokens are defined in references/tokens.css. Key categories:
| Category | Prefix | Example |
|---|---|---|
| Glass backgrounds | --lg-bg-* |
--lg-bg-primary |
| Blur | --lg-blur-* |
--lg-blur-md |
| Borders | --lg-border-* |
--lg-border-color |
| Shadows | --lg-shadow-* |
--lg-shadow-elevated |
| Radius | --lg-radius-* |
--lg-radius-lg |
| Animation | --lg-duration-* |
--lg-duration-normal |
Component Patterns
Glass Card
.glass-card {
background: var(--lg-bg-primary);
backdrop-filter: blur(var(--lg-blur-md));
-webkit-backdrop-filter: blur(var(--lg-blur-md));
border: 1px solid var(--lg-border-color);
border-radius: var(--lg-radius-lg);
box-shadow: var(--lg-shadow-elevated);
transition: transform var(--lg-duration-normal) var(--lg-easing-spring);
}
.glass-card:hover {
transform: translateY(-2px);
box-shadow: var(--lg-shadow-high);
}
Glass Toolbar
.glass-toolbar {
background: var(--lg-bg-toolbar);
backdrop-filter: blur(var(--lg-blur-lg)) saturate(var(--lg-saturate));
-webkit-backdrop-filter: blur(var(--lg-blur-lg)) saturate(var(--lg-saturate));
border-bottom: 1px solid var(--lg-border-subtle);
}
Glass Button
.glass-btn {
background: var(--lg-bg-interactive);
backdrop-filter: blur(var(--lg-blur-sm));
border: 1px solid var(--lg-border-color);
border-radius: var(--lg-radius-md);
transition: all var(--lg-duration-fast) var(--lg-easing-spring);
}
.glass-btn:active {
transform: scale(0.97);
background: var(--lg-bg-pressed);
}
Glass Modal Overlay
.glass-overlay {
background: var(--lg-bg-scrim);
backdrop-filter: blur(var(--lg-blur-xl));
}
.glass-modal {
background: var(--lg-bg-elevated);
border: 1px solid var(--lg-border-color);
border-radius: var(--lg-radius-xl);
box-shadow: var(--lg-shadow-high);
}
Dark / Light Mode
Tokens auto-switch via prefers-color-scheme. Light mode uses white-tinted glass; dark mode uses dark-tinted glass with higher blur to maintain readability.
/* Force a mode on a subtree */
.light-glass { color-scheme: light; }
.dark-glass { color-scheme: dark; }
Animations
Use spring-based easing for physical feel:
/* Entry */
@keyframes glass-enter {
from { opacity: 0; transform: scale(0.95) translateY(8px); }
to { opacity: 1; transform: scale(1) translateY(0); }
}
.glass-animate-in {
animation: glass-enter var(--lg-duration-normal) var(--lg-easing-spring) both;
}
Accessibility
- Ensure
contrast-ratio ≥ 4.5:1for text over glass surfaces - Respect
prefers-reduced-motion— disable blur animations, use opacity-only transitions - Provide
prefers-contrast: highoverrides that replace translucent backgrounds with solid ones
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