01Corner ribbon badge

<main class="stage is-demo">
  <div class="card" aria-label="new arrival">
    <div class="thumb"></div>
    <div class="ribbon-wrap">
      <span class="ribbon">NEW</span>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-loop;   // 2s — 빛줄기 한 주기
$easing: $ease-out;
$color: #50a26e;        // NEW 리본 그린

@include stage($stage-yellow);

.card {
  position: relative;
  width: 220px; height: 140px;
  border-radius: $r-card;
  overflow: hidden;
  background: $subject-cream;
  box-shadow: $shadow-raised;
}

.thumb {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba($subject-blue, .12), rgba($subject-blue, .04));
}

.ribbon-wrap {
  position: absolute;
  top: $sp-6; left: -$sp-10;
  width: 160px;
  transform: rotate(-45deg);
  overflow: hidden;
}

.ribbon {
  position: relative;
  display: block;
  padding: $sp-1 0;
  background: $color;
  color: $subject-ink;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .06em;
  text-align: center;
  box-shadow: $shadow-press;
}

// 빛줄기 ::after — background-position 만 움직인다 (레이아웃은 그대로)
.ribbon::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 15%, rgba(255, 255, 255, .7) 45%, transparent 75%);
  background-size: 220% 100%;
  background-position: 140% 0;
}

.stage.is-demo .ribbon::after {
  animation: shine-sweep $duration $easing infinite;
}

@keyframes shine-sweep {
  0%, 15% { background-position: 140% 0; }
  55% { background-position: -40% 0; }
  100% { background-position: -40% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .ribbon::after { animation: none; background-position: 30% 0; }
}

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);
}

.card {
  position: relative;
  width: 220px;
  height: 140px;
  border-radius: 16px;
  overflow: hidden;
  background: #fff7e6;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.thumb {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(47, 109, 246, 0.12), rgba(47, 109, 246, 0.04));
}

.ribbon-wrap {
  position: absolute;
  top: 24px;
  left: -40px;
  width: 160px;
  transform: rotate(-45deg);
  overflow: hidden;
}

.ribbon {
  position: relative;
  display: block;
  padding: 4px 0;
  background: #50a26e;
  color: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-align: center;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
}

.ribbon::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 15%, rgba(255, 255, 255, 0.7) 45%, transparent 75%);
  background-size: 220% 100%;
  background-position: 140% 0;
}

.stage.is-demo .ribbon::after {
  animation: shine-sweep 2s ease-out infinite;
}

@keyframes shine-sweep {
  0%, 15% {
    background-position: 140% 0;
  }
  55% {
    background-position: -40% 0;
  }
  100% {
    background-position: -40% 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .ribbon::after {
    animation: none;
    background-position: 30% 0;
  }
}

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

export type BadgeNewRibbonProps = {
  duration?: number;
  easing?: string;
  color?: string;
  label?: string;
};

export default function BadgeNewRibbon({
  duration = 2000,
  easing = "ease-out",
  color = "#16a34a",
  label = "NEW",
}: BadgeNewRibbonProps) {
  const vars: CSSProperties = { "--duration": `${duration}ms`, "--easing": easing, "--color": color } as CSSProperties;
  return (
    <div className={styles.card} style={vars} aria-label="new arrival">
      <div className={styles.thumb} />
      <div className={styles.ribbonWrap}>
        <span className={styles.ribbon}>{label}</span>
      </div>
    </div>
  );
}