hig

What this skill does

# Human Interface Guidelines Reference

Comprehensive reference for designing interfaces that follow Apple's Human Interface Guidelines.

## Downloaded Reference Files

All key HIG documentation is available locally (grep-friendly):

### Getting Started

| File | Content | Size |
|------|---------|------|
| [hig-index.md](hig-index.md) | Full HIG table of contents | 11KB |
| [designing-for-ios.md](designing-for-ios.md) | iOS design principles | 5KB |

### Foundations

| File | Content | Size |
|------|---------|------|
| [app-icons.md](app-icons.md) | App icon design guidelines | 14KB |
| [color.md](color.md) | Color usage and system colors | 17KB |
| [typography.md](typography.md) | Fonts, text styles, Dynamic Type | 17KB |
| [layout.md](layout.md) | Layout principles, safe areas | 21KB |
| [materials.md](materials.md) | Materials, blur effects, vibrancy | 14KB |
| [motion.md](motion.md) | Animation principles | 9KB |
| [accessibility.md](accessibility.md) | Accessibility best practices | 19KB |
| [sf-symbols.md](sf-symbols.md) | SF Symbols usage | 21KB |

### Patterns

| File | Content | Size |
|------|---------|------|
| [onboarding.md](onboarding.md) | Onboarding flows | 6KB |
| [modality.md](modality.md) | Modal presentations | 7KB |
| [launching.md](launching.md) | App launch experience | 6KB |
| [feedback.md](feedback.md) | User feedback patterns | 5KB |
| [playing-haptics.md](playing-haptics.md) | Haptic feedback | 10KB |
| [searching.md](searching.md) | Search patterns | 7KB |
| [settings.md](settings.md) | Settings patterns | 7KB |

### Components - Navigation

| File | Content | Size |
|------|---------|------|
| [tab-bars.md](tab-bars.md) | Tab bar design | 11KB |
| [navigation-bars.md](navigation-bars.md) | Navigation bar patterns | 17KB |
| [toolbars.md](toolbars.md) | Toolbar design | 17KB |
| [sidebars.md](sidebars.md) | Sidebar patterns | 8KB |

### Components - Presentation

| File | Content | Size |
|------|---------|------|
| [sheets.md](sheets.md) | Sheet presentations | 11KB |
| [alerts.md](alerts.md) | Alert dialogs | 10KB |
| [action-sheets.md](action-sheets.md) | Action sheets | 4KB |
| [menus.md](menus.md) | Menu design | 14KB |

### Components - Controls

| File | Content | Size |
|------|---------|------|
| [buttons.md](buttons.md) | Button styles and usage | 17KB |
| [lists-and-tables.md](lists-and-tables.md) | List and table patterns | 9KB |
| [toggles.md](toggles.md) | Toggle/switch design | 9KB |
| [pickers.md](pickers.md) | Picker controls | 6KB |
| [sliders.md](sliders.md) | Slider controls | 6KB |
| [steppers.md](steppers.md) | Stepper controls | 2KB |
| [text-fields.md](text-fields.md) | Text input fields | 6KB |

### Searching the Docs

```bash
# Find color guidance
grep -i "semantic" color.md

# Find button styles
grep -i "bordered" buttons.md

# Find haptic patterns
grep -i "notification" playing-haptics.md

# Browse the full HIG index
grep -i "navigation" hig-index.md
```

## Fetching More Docs

1. Search this skill's local `.md` files first.
2. If the topic is not here, check the other installed Apple skills you have available by their names, descriptions, or `SKILL.md` frontmatter, then grep their local files. This is faster and uses less context than fetching new docs from the internet.
3. If no installed skill has the page, use the relevant Human Interface Guidelines path with the `sosumi.ai` Markdown mirror. For example, `/design/human-interface-guidelines/buttons` maps to `https://sosumi.ai/design/human-interface-guidelines/buttons`.

### Common HIG Doc Paths

| Topic | URL Path |
|-------|----------|
| Full Index | `human-interface-guidelines` |
| iOS Design | `human-interface-guidelines/designing-for-ios` |
| iPadOS Design | `human-interface-guidelines/designing-for-ipados` |
| macOS Design | `human-interface-guidelines/designing-for-macos` |
| App Icons | `human-interface-guidelines/app-icons` |
| Color | `human-interface-guidelines/color` |
| Typography | `human-interface-guidelines/typography` |
| Layout | `human-interface-guidelines/layout` |
| Accessibility | `human-interface-guidelines/accessibility` |
| SF Symbols | `human-interface-guidelines/sf-symbols` |
| Buttons | `human-interface-guidelines/buttons` |
| Tab Bars | `human-interface-guidelines/tab-bars` |
| Navigation Bars | `human-interface-guidelines/navigation-bars` |
| Sheets | `human-interface-guidelines/sheets` |
| Alerts | `human-interface-guidelines/alerts` |

## Quick Reference

### Button Styles (iOS)

- **Plain** - Text only, minimal visual weight
- **Gray** - Gray background, for secondary actions
- **Tinted** - Tinted background with accent color
- **Filled** - Solid background, for primary actions
- **Bordered** - Outlined with border
- **Bordered Prominent** - Filled background, high prominence

### Haptic Feedback Types

- **Selection** - Light tap for selection changes
- **Impact** - Light/medium/heavy/rigid/soft for collisions
- **Notification** - Success/warning/error for outcomes

### Safe Areas

- Always respect safe areas for content
- Extend backgrounds edge-to-edge
- Place interactive elements within safe areas

## Sources

### Apple Documentation
- [Human Interface Guidelines](https://developer.apple.com/design/human-interface-guidelines/)
- [Design Resources](https://developer.apple.com/design/resources/)

### WWDC Sessions
- [Design for Liquid Glass - WWDC25](https://developer.apple.com/videos/play/wwdc2025/10156/)
- [What's new in UIKit - WWDC25](https://developer.apple.com/videos/play/wwdc2025/10144/)