02Badge quét vệt sáng

<main class="stage">
  <div class="sh-wrap">
    <span class="sh-badge">Popular</span>
    <div class="sh-card">
      <span class="sh-card__tag">Pro plan</span>
      <span class="sh-card__price">$29 / mo</span>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: 2.4s;
$easing: ease-in-out;
$color: $subject-blue;

@include stage($stage-yellow);

.sh-wrap {
  width: min(240px, 84vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-4;
}

.sh-badge {
  position: relative;
  overflow: hidden;
  display: inline-block;
  border-radius: $r-pill;
  padding: $sp-2 $sp-5;
  background: $subject-ink;
  color: $subject-cream;
  font: 700 13px/1 -apple-system, "Segoe UI", sans-serif;
}

// 광택 띠 — 폭 고정, transform 만 움직인다 (그라디언트 자체는 정적)
.sh-badge::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, .65), transparent);
  transform: translateX(-260%) skewX(-12deg);
}

// 자동 재생 (호버 불필요) — badge 는 항상 스윕한다
.sh-badge::after {
  animation: sh-sweep $duration $easing infinite;
}
@keyframes sh-sweep {
  0% { transform: translateX(-260%) skewX(-12deg); }
  60%, 100% { transform: translateX(360%) skewX(-12deg); }
}

.sh-card {
  width: 100%;
  box-sizing: border-box;
  border-radius: $r-card;
  padding: $sp-4;
  background: rgba(23, 20, 26, .55);
  color: $subject-cream;
  display: flex;
  flex-direction: column;
  gap: $sp-1;
  font: 600 12px/1 -apple-system, "Segoe UI", sans-serif;
}
.sh-card__tag { opacity: 1; }                 // AA: 뱃지 면(잉크 55% 옐로 겹침) 위 크림 100% — 4.89:1
.sh-card__price { font-size: 18px; font-weight: 700; }

@media (prefers-reduced-motion: reduce) {
  .sh-badge::after { animation: none !important; opacity: 0 !important; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.sh-wrap {
  width: min(240px, 84vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.sh-badge {
  position: relative;
  overflow: hidden;
  display: inline-block;
  border-radius: 999px;
  padding: 8px 20px;
  background: #17141a;
  color: #fff7e6;
  font: 700 13px/1 -apple-system, "Segoe UI", sans-serif;
}

.sh-badge::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.65), transparent);
  transform: translateX(-260%) skewX(-12deg);
}

.sh-badge::after {
  animation: sh-sweep 2.4s ease-in-out infinite;
}

@keyframes sh-sweep {
  0% {
    transform: translateX(-260%) skewX(-12deg);
  }
  60%, 100% {
    transform: translateX(360%) skewX(-12deg);
  }
}
.sh-card {
  width: 100%;
  box-sizing: border-box;
  border-radius: 16px;
  padding: 16px;
  background: rgba(23, 20, 26, 0.55);
  color: #fff7e6;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font: 600 12px/1 -apple-system, "Segoe UI", sans-serif;
}

.sh-card__tag {
  opacity: 1;
}

.sh-card__price {
  font-size: 18px;
  font-weight: 700;
}

@media (prefers-reduced-motion: reduce) {
  .sh-badge::after {
    animation: none !important;
    opacity: 0 !important;
  }
}

import { CSSProperties } from "react";
import styles from "./BadgeShineSweep.module.scss";

export interface BadgeShineSweepProps {
  duration?: string;
  easing?: string;
  tag?: string;
}

export default function BadgeShineSweep({
  duration = "2.4s",
  easing = "ease-in-out",
  tag = "Popular",
}: BadgeShineSweepProps) {
  const style = { "--duration": duration, "--easing": easing } as CSSProperties;
  return (
    <div className={styles.wrap} style={style}>
      <span className={styles.badge}>{tag}</span>
      <div className={styles.card}>
        <span className={styles.tag}>Pro plan</span>
        <span className={styles.price}>$29 / mo</span>
      </div>
    </div>
  );
}