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2026-03-25 15:59:35 +01:00
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skills/emil-design-eng/SKILL.md
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@@ -40,7 +40,7 @@ People select tools based on the overall experience, not just functionality. Goo
When reviewing UI code, you MUST use a markdown table with Before/After columns. Do NOT use a list with "Before:" and "After:" on separate lines. Always output an actual markdown table like this: When reviewing UI code, you MUST use a markdown table with Before/After columns. Do NOT use a list with "Before:" and "After:" on separate lines. Always output an actual markdown table like this:
| Before | After | Why | | Before | After | Why |
| ------------------------------------- | ----------------------------------------------------------------- | ---------------------------------------------------------------------------- | | --- | --- | --- |
| `transition: all 300ms` | `transition: transform 200ms ease-out` | Specify exact properties; avoid `all` | | `transition: all 300ms` | `transition: transform 200ms ease-out` | Specify exact properties; avoid `all` |
| `transform: scale(0)` | `transform: scale(0.95); opacity: 0` | Nothing in the real world appears from nothing | | `transform: scale(0)` | `transform: scale(0.95); opacity: 0` | Nothing in the real world appears from nothing |
| `ease-in` on dropdown | `ease-out` with custom curve | `ease-in` feels sluggish; `ease-out` gives instant feedback | | `ease-in` on dropdown | `ease-out` with custom curve | `ease-in` feels sluggish; `ease-out` gives instant feedback |
@@ -95,15 +95,15 @@ If the purpose is just "it looks cool" and the user will see it often, don't ani
### 3. What easing should it use? ### 3. What easing should it use?
Is the element entering or exiting? Is the element entering or exiting?
Yes → ease-out (starts fast, feels responsive) Yes → ease-out (starts fast, feels responsive)
No → No →
Is it moving/morphing on screen? Is it moving/morphing on screen?
Yes → ease-in-out (natural acceleration/deceleration) Yes → ease-in-out (natural acceleration/deceleration)
Is it a hover/color change? Is it a hover/color change?
Yes → ease Yes → ease
Is it constant motion (marquee, progress bar)? Is it constant motion (marquee, progress bar)?
Yes → linear Yes → linear
Default → ease-out Default → ease-out
**Critical: use custom easing curves.** The built-in CSS easings are too weak. They lack the punch that makes animations feel intentional. **Critical: use custom easing curves.** The built-in CSS easings are too weak. They lack the punch that makes animations feel intentional.
@@ -665,7 +665,7 @@ For touch interactions (drawers, swipe gestures), test on physical devices. Conn
When reviewing UI code, check for: When reviewing UI code, check for:
| Issue | Fix | | Issue | Fix |
| -------------------------------------- | --------------------------------------------------------------------------------------------- | | ------------------------------------------ | ---------------------------------------------------------------- |
| `transition: all` | Specify exact properties: `transition: transform 200ms ease-out` | | `transition: all` | Specify exact properties: `transition: transform 200ms ease-out` |
| `scale(0)` entry animation | Start from `scale(0.95)` with `opacity: 0` | | `scale(0)` entry animation | Start from `scale(0.95)` with `opacity: 0` |
| `ease-in` on UI element | Switch to `ease-out` or custom curve | | `ease-in` on UI element | Switch to `ease-out` or custom curve |