refactor(motion): simplify to default and reduced

packages/tokens/src/index.ts

@@ -18,50 +18,21 @@ export const themeDetails = {
   }
 } as const satisfies Record<ThemeName, { label: string; note: string }>;
 
-export const motionPackNames = ["calm", "snappy", "spring"] as const;
-export type MotionPackName = (typeof motionPackNames)[number];
+export const motionModeNames = ["default", "reduced"] as const;
+export type MotionModeName = (typeof motionModeNames)[number];
 
-export const defaultMotionPack: MotionPackName = "calm";
+export const defaultMotionMode: MotionModeName = "default";
 
-export const motionPackDetails = {
-  calm: {
-    label: "Calm",
-    note: "Editorial default with restrained lift and steady transitions"
-  },
-  snappy: {
-    label: "Snappy",
-    note: "Shorter durations, tighter distances, and more direct response"
-  },
-  spring: {
-    label: "Spring",
-    note: "More elastic easing, wider movement, and livelier feedback"
-  }
-} as const satisfies Record<MotionPackName, { label: string; note: string }>;
-
-export const motionAccessibilityNames = ["system", "full", "reduced"] as const;
-export type MotionAccessibilityName = (typeof motionAccessibilityNames)[number];
-
-export const defaultMotionAccessibility: MotionAccessibilityName = "system";
-
-export const motionAccessibilityDetails = {
-  system: {
-    label: "System",
-    note: "Follow the operating system reduced-motion preference"
-  },
-  full: {
-    label: "Full",
-    note: "Always show the selected motion pack, even if the OS prefers reduced motion"
+export const motionModeDetails = {
+  default: {
+    label: "Default",
+    note: "Standard Cadence UI motion for hover, press, overlays, and hierarchy"
   },
   reduced: {
     label: "Reduced",
-    note: "Always collapse durations, distances, and animated feedback"
+    note: "Collapse durations, distances, and animated feedback"
   }
-} as const satisfies Record<MotionAccessibilityName, { label: string; note: string }>;
-
-export const motionModeNames = motionAccessibilityNames;
-export type MotionModeName = MotionAccessibilityName;
-
-export const defaultMotionMode: MotionModeName = defaultMotionAccessibility;
+} as const satisfies Record<MotionModeName, { label: string; note: string }>;
 
 export const motionScale = {
   instant: "var(--dur-instant)",
@@ -190,16 +161,6 @@ function getTargetElement(root?: HTMLElement) {
   return document.documentElement;
 }
 
-export function setMotionPack(pack: MotionPackName, root?: HTMLElement) {
-  const target = getTargetElement(root);
-
-  if (!target) {
-    return;
-  }
-
-  target.dataset.motionPack = pack;
-}
-
 export function setTheme(theme: ThemeName, root?: HTMLElement) {
   const target = getTargetElement(root);
 
@@ -210,24 +171,12 @@ export function setTheme(theme: ThemeName, root?: HTMLElement) {
   target.dataset.theme = theme;
 }
 
-export function setMotionAccessibility(
-  mode: MotionAccessibilityName,
-  root?: HTMLElement
-) {
+export function setMotionMode(mode: MotionModeName, root?: HTMLElement) {
   const target = getTargetElement(root);
 
   if (!target) {
     return;
   }
 
-  if (mode === "system") {
-    delete target.dataset.motion;
-    return;
-  }
-
   target.dataset.motion = mode;
 }
-
-export function setMotionMode(mode: MotionModeName, root?: HTMLElement) {
-  setMotionAccessibility(mode, root);
-}

packages/tokens/src/motion.css

@@ -1,5 +1,6 @@
 :root,
-[data-motion-pack="calm"] {
+:root[data-motion="default"],
+[data-motion="default"] {
   --dur-instant: 1ms;
   --dur-fast: 120ms;
   --dur-base: 200ms;
@@ -20,50 +21,6 @@
   --scale-pop: 1.02;
 }
 
-:root[data-motion-pack="snappy"],
-[data-motion-pack="snappy"] {
-  --dur-instant: 1ms;
-  --dur-fast: 90ms;
-  --dur-base: 150ms;
-  --dur-slow: 220ms;
-  --dur-deliberate: 300ms;
-
-  --ease-standard: cubic-bezier(0.18, 1, 0.32, 1);
-  --ease-emphasized: cubic-bezier(0.2, 1.08, 0.28, 1);
-  --ease-exit: cubic-bezier(0.4, 0, 1, 1);
-
-  --distance-xs: 2px;
-  --distance-sm: 4px;
-  --distance-md: 10px;
-  --distance-lg: 16px;
-
-  --scale-press: 0.985;
-  --scale-hover: 1.006;
-  --scale-pop: 1.012;
-}
-
-:root[data-motion-pack="spring"],
-[data-motion-pack="spring"] {
-  --dur-instant: 1ms;
-  --dur-fast: 140ms;
-  --dur-base: 220ms;
-  --dur-slow: 360ms;
-  --dur-deliberate: 520ms;
-
-  --ease-standard: cubic-bezier(0.2, 1.08, 0.28, 1);
-  --ease-emphasized: cubic-bezier(0.34, 1.56, 0.64, 1);
-  --ease-exit: cubic-bezier(0.42, 0, 1, 1);
-
-  --distance-xs: 6px;
-  --distance-sm: 12px;
-  --distance-md: 20px;
-  --distance-lg: 32px;
-
-  --scale-press: 0.96;
-  --scale-hover: 1.018;
-  --scale-pop: 1.035;
-}
-
 :root[data-motion="reduced"],
 [data-motion="reduced"] {
   --dur-instant: 1ms;
@@ -93,35 +50,6 @@
   transition-duration: 1ms !important;
 }
 
-@media (prefers-reduced-motion: reduce) {
-  :root:not([data-motion="full"]) {
-    --dur-instant: 1ms;
-    --dur-fast: 1ms;
-    --dur-base: 1ms;
-    --dur-slow: 1ms;
-    --dur-deliberate: 1ms;
-    --distance-xs: 0px;
-    --distance-sm: 0px;
-    --distance-md: 0px;
-    --distance-lg: 0px;
-    --scale-press: 1;
-    --scale-hover: 1;
-    --scale-pop: 1;
-  }
-
-  :root {
-    scroll-behavior: auto;
-  }
-
-  :root:not([data-motion="full"]) *,
-  :root:not([data-motion="full"]) *::before,
-  :root:not([data-motion="full"]) *::after {
-    animation-duration: 1ms !important;
-    animation-iteration-count: 1 !important;
-    scroll-behavior: auto !important;
-    transition-duration: 1ms !important;
-  }
-}
 
 @keyframes aiui-fade-in {
   from {

packages/ui/src/lib/motion-contract.test.ts

@@ -1,52 +1,35 @@
 import { describe, expect, it } from "vitest";
 
 import {
-  defaultMotionAccessibility,
   defaultMotionMode,
-  defaultMotionPack,
-  motionAccessibilityDetails,
-  motionAccessibilityNames,
   motionModeNames,
-  motionPackDetails,
-  motionPackNames,
-  setMotionAccessibility,
-  setMotionMode,
-  setMotionPack
+  motionModeDetails,
+  setMotionMode
 } from "@ai-ui/tokens";
 
 describe("motion contract", () => {
   it("exposes default values that exist in the public name sets", () => {
-    expect(motionPackNames).toContain(defaultMotionPack);
-    expect(motionAccessibilityNames).toContain(defaultMotionAccessibility);
     expect(motionModeNames).toContain(defaultMotionMode);
-    expect(motionPackDetails[defaultMotionPack].label).toBeTruthy();
-    expect(motionAccessibilityDetails[defaultMotionAccessibility].label).toBeTruthy();
+    expect(motionModeDetails[defaultMotionMode].label).toBeTruthy();
   });
 
-  it("sets the active motion pack on the document root", () => {
-    setMotionPack("spring");
+  it("sets default motion mode on the document root", () => {
+    setMotionMode("default");
 
-    expect(document.documentElement.dataset.motionPack).toBe("spring");
+    expect(document.documentElement.dataset.motion).toBe("default");
   });
 
-  it("sets reduced motion accessibility on the document root", () => {
-    setMotionAccessibility("reduced");
+  it("sets reduced motion mode on the document root", () => {
+    setMotionMode("reduced");
 
     expect(document.documentElement.dataset.motion).toBe("reduced");
   });
 
-  it("removes the accessibility override when system mode is restored", () => {
-    setMotionAccessibility("reduced");
-    setMotionMode("system");
-
-    expect(document.documentElement.dataset.motion).toBeUndefined();
-  });
-
-  it("supports explicit full motion override on custom roots", () => {
+  it("supports explicit reduced mode on custom roots", () => {
     const target = document.createElement("div");
 
-    setMotionAccessibility("full", target);
+    setMotionMode("reduced", target);
 
-    expect(target.dataset.motion).toBe("full");
+    expect(target.dataset.motion).toBe("reduced");
   });
 });