07Hover strikethrough

<main class="stage">
  <a class="link is-demo" href="#">Mark task as done</a>
</main>

@use "../../../../site/static/demo-tokens" as *;

// ── 변수 3개 ─────────────────────────────
$duration: $dur-instant;
$easing:   $ease-pop;
$color:    $subject-cream;

// ── 데모 무대 ───────────────────────────────
@include stage($stage-orange);

.link {
  position: relative;
  display: inline-block;
  padding: $sp-2 $sp-1;
  color: $color;
  text-decoration: none;
  font-weight: 700; font-size: clamp(18px, 5vw, 26px); line-height: 1.2;

  &::after {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 50%;   // 글자 중간 높이 — 취소선 자리
    height: 2px;
    background: currentColor;
    transform: translateY(-50%) scaleX(0);
    transform-origin: left center; // 규칙8: 취소선 왼쪽에서 긋기
    transition: transform $duration $easing;
  }
  &:hover::after, &:focus-visible::after {
    transform: translateY(-50%) scaleX(1);
  }

  &.is-demo::after {
    animation: strike-hover $dur-loop $easing infinite;
  }
}

@keyframes strike-hover {
  0%, 100%  { transform: translateY(-50%) scaleX(0); }
  35%, 60%  { transform: translateY(-50%) scaleX(1); }
}

@media (prefers-reduced-motion: reduce) {
  .link::after, .link.is-demo::after { transition: none; animation: none; }
  .link:hover::after, .link:focus-visible::after { transform: translateY(-50%) scaleX(1); }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.link {
  position: relative;
  display: inline-block;
  padding: 8px 4px;
  color: #fff7e6;
  text-decoration: none;
  font-weight: 700;
  font-size: clamp(18px, 5vw, 26px);
  line-height: 1.2;
}
.link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: currentColor;
  transform: translateY(-50%) scaleX(0);
  transform-origin: left center;
  transition: transform 140ms cubic-bezier(0.2, 1.4, 0.4, 1);
}
.link:hover::after, .link:focus-visible::after {
  transform: translateY(-50%) scaleX(1);
}
.link.is-demo::after {
  animation: strike-hover 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes strike-hover {
  0%, 100% {
    transform: translateY(-50%) scaleX(0);
  }
  35%, 60% {
    transform: translateY(-50%) scaleX(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .link::after, .link.is-demo::after {
    transition: none;
    animation: none;
  }
  .link:hover::after, .link:focus-visible::after {
    transform: translateY(-50%) scaleX(1);
  }
}

document.querySelectorAll('.link').forEach(function (b) {
  b.addEventListener('pointerenter', function () { b.classList.remove('is-demo'); });
  b.addEventListener('click', function (e) { e.preventDefault(); });
});

import type { CSSProperties, ReactNode } from "react";
import styles from "./StrikeThroughHover.module.scss";

export type StrikeThroughHoverProps = { children: ReactNode; href: string; duration?: number; color?: string };

export default function StrikeThroughHover({ children, href, duration = 140, color = "currentColor" }: StrikeThroughHoverProps) {
  const vars = { "--duration": `${duration}ms`, "--color": color } as CSSProperties;
  return (
    <a className={styles.link} href={href} style={vars}>
      {children}
    </a>
  );
}