Interaction Design
Create engaging, intuitive interactions through motion, feedback, and thoughtful state transitions that enhance usability and delight users.
When to Use This Skill
- Adding microinteractions to enhance user feedback
- Implementing smooth page and component transitions
- Designing loading states and skeleton screens
- Creating gesture-based interactions
- Building notification and toast systems
- Implementing drag-and-drop interfaces
- Adding scroll-triggered animations
- Designing hover and focus states
Core Principles
1. Purposeful Motion
Motion should communicate, not decorate:
- Feedback: Confirm user actions occurred
- Orientation: Show where elements come from/go to
- Focus: Direct attention to important changes
- Continuity: Maintain context during transitions
2. Timing Guidelines
| Duration | Use Case |
|---|---|
| 100-150ms | Micro-feedback (hovers, clicks) |
| 200-300ms | Small transitions (toggles, dropdowns) |
| 300-500ms | Medium transitions (modals, page changes) |
| 500ms+ | Complex choreographed animations |
3. Easing Functions
/* Common easings */
--ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* Decelerate - entering */
--ease-in: cubic-bezier(0.55, 0, 1, 0.45); /* Accelerate - exiting */
--ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
: (, , , );