18 lines
583 B
TypeScript
18 lines
583 B
TypeScript
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import { browser } from '$app/environment';
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/** Gate unique prefers-reduced-motion (playbook §6). */
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export function prefersReducedMotion(): boolean {
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return browser && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
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}
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/**
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* Stagger syncopé de marque OKI (3+3+2) — charte §3.
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* Délais en ms pour l'index donné (cycle de 8 éléments).
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*/
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const SYNCOPATED_DELAYS = [0, 120, 300, 360, 600, 660, 900, 960];
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export function syncopatedDelay(index: number): number {
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const cycle = Math.floor(index / 8);
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return SYNCOPATED_DELAYS[index % 8] + cycle * 1200;
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}
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