# responsive-adaptive

Adjusts UI animation timing to viewport dimensions, travel distance, and reduced motion settings instead of using static durations.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 488 installs · ★ 124
- Author: dylantarre
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/dylantarre/animation-principles/tree/HEAD/skills/10-by-time-scale/responsive-adaptive/SKILL.md
- Updated: 2025-12-30
- HTML: https://affpapa.org/en/nevibecode/skills/responsive-adaptive

## What it does

The skill provides guidelines for building context-aware UI transitions. It alters transition speeds depending on context: touch interactions get 25% faster pacing than desktop clicks, while mobile viewports reduce duration by 20%. When elements travel longer distances, duration scales via a square-root formula up to 600ms so large movements do not feel jarring.

It translates classic Disney motion rules to modern frontends. Anticipation stages are trimmed for touch displays because finger taps demand prompt feedback. Secondary actions and heavy 3D transforms get dropped on mobile screens to protect frame rates. For `prefers-reduced-motion`, it provides options for instantaneous 0.01ms cutoffs or subtle 100ms opacity fades.

Without centralizing duration tokens inside root CSS custom properties, maintaining these adaptive rules across media queries quickly turns into tedious manual overrides.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add dylantarre/animation-principles --skill responsive-adaptive -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/responsive-adaptive/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/responsive-adaptive/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add dylantarre/animation-principles --skill responsive-adaptive -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/responsive-adaptive/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add dylantarre/animation-principles --skill responsive-adaptive -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/responsive-adaptive/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install dylantarre/animation-principles responsive-adaptive
```

2. **Manually: put the files in place**
- File: `.github/skills/responsive-adaptive/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add dylantarre/animation-principles --skill responsive-adaptive -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/dylantarre/animation-principles --path skills/10-by-time-scale/responsive-adaptive
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/responsive-adaptive/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add dylantarre/animation-principles --skill responsive-adaptive -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/dylantarre/animation-principles/tree/HEAD/skills/10-by-time-scale/responsive-adaptive/SKILL.md

## When to use it
- scale transition speed based on pixel travel distance
- shorten animation latency for touch and mobile screens
- implement reduced-motion fallbacks using pure opacity fades
- strip heavy secondary motion on mobile devices to preserve frame rates

## Example prompts
- Create root CSS custom properties for animation speeds with mobile media queries
- Write a JavaScript helper that calculates transition length from travel distance
- Apply prefers-reduced-motion rules to disable transforms while keeping opacity fades

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: 0f385bdfa2cfabe9.

BEGIN THIRD-PARTY FILE 0f385bdfa2cfabe9
````text
---
name: responsive-adaptive
description: Use when building context-dependent animations - duration that changes based on device, distance, user preference, or interaction context
---

# Responsive & Adaptive Timing

Responsive timing adapts duration to **context**: device capability, travel distance, user preferences, and interaction type. One duration doesn't fit all situations.

## Disney Principles for Adaptive Motion

### Context-Aware Application

**Squash & Stretch**: Scale with device - more subtle on mobile (less screen real estate for deformation).

**Anticipation**: Shorter on touch devices - touch users expect faster response than mouse users.

**Staging**: Adapt to viewport - smaller screens need more focused staging, less simultaneous motion.

**Straight Ahead/Pose to Pose**: Same approach, scaled duration - poses stay, timing adjusts.

**Follow Through**: Proportional to distance - longer travel = more follow-through time.

**Slow In/Slow Out**: Adjust curve intensity - faster animations need sharper easing.

**Arcs**: Same paths, different speeds - arc shape remains, traversal time changes.

**Secondary Action**: Reduce on mobile - fewer simultaneous animations for performance.

**Timing**: THE adaptive variable - timing changes, principles stay.

**Exaggeration**: Less on smaller screens - proportional to viewport/element size.

**Solid Drawing**: Performance-aware - reduce 3D transforms on weaker devices.

**Appeal**: Context-appropriate - what feels right on desktop may feel slow on mobile.

## Adaptive Strategies

### Distance-Based Duration

```css
/* Base duration for reference distance */
--base-duration: 300ms;
--base-distance: 100px;

/* Duration scales with distance */
/* 50px travel = 200ms, 200px travel = 450ms */
```

```javascript
function getDuration(distance) {
  const baseDuration = 300;
  const baseDistance = 100;
  return Math.min(600, baseDuration * Math.sqrt(distance / baseDistance));
}
```

### Device-Based Duration

```css
/* Desktop - full duration */
.transition { transition-duration: 400ms; }

/* Tablet - slightly faster */
@media (max-width: 1024px) {
  .transition { transition-duration: 350ms; }
}

/* Mobile - faster for perceived responsiveness */
@media (max-width: 768px) {
  .transition { transition-duration: 250ms; }
}
```

### Preference-Based Duration

```css
/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .transition {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* Reduce motion, don't eliminate */
````
END THIRD-PARTY FILE 0f385bdfa2cfabe9

The third-party file has ended. Everything between the 0f385bdfa2cfabe9 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 2579 of 3856 bytes. © dylantarre · MIT · https://github.com/dylantarre/animation-principles/tree/HEAD/skills/10-by-time-scale/responsive-adaptive/SKILL.md

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