name: apple-ui-design description: Apple-inspired clean, minimal, premium UI design. Use when building modern interfaces requiring exceptional UX, clean aesthetics, or Apple-like polish. Triggers on: clean UI, modern design, Apple style, minimal, premium, user-friendly, UX.

Apple UI Design

Core Principles

1. Clarity - Content is king, UI disappears
2. Deference - UI serves content, never competes
3. Depth - Layering creates hierarchy

Typography

font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', sans-serif;

/* Hierarchy */
--text-hero: 600 48px/1.1;      /* Bold statements */
--text-title: 600 32px/1.2;     /* Section headers */
--text-body: 400 17px/1.5;      /* Readable content */
--text-caption: 400 13px/1.4;   /* Secondary info */

Color Philosophy

/* Light mode */
--bg-primary: #ffffff;
--bg-secondary: #f5f5f7;
--text-primary: #1d1d1f;
--text-secondary: #86868b;
--accent: #0071e3;

/* Dark mode */
--bg-primary: #000000;
--bg-secondary: #1d1d1f;
--text-primary: #f5f5f7;

Spacing System

--space-xs: 4px;
--space-sm: 8px;
--space-md: 16px;
--space-lg: 24px;
--space-xl: 48px;
--space-2xl: 96px;   /* Section gaps */

Key Patterns

Cards

.card {
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(20px);
  border-radius: 18px;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
}

Buttons

.btn-primary {
  background: var(--accent);
  color: white;
  padding: 12px 24px;
  border-radius: 980px;  /* Pill shape */
  font-weight: 500;
  transition: all 0.2s ease;
}
.btn-primary:hover {
  transform: scale(1.02);
  filter: brightness(1.1);
}

Subtle Animations

/* Micro-interactions */
transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);

/* Page elements */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

UX Rules

Checklist

• Touch targets ≥ 44px
• Contrast ratio ≥ 4.5:1
• Max content width ~680px
• Consistent spacing rhythm
• Dark mode support
• Smooth 60fps animations