07Price tag holographic ribbon

<main class="stage">
  <div class="tag is-demo" tabindex="0">
    <span class="tag__ribbon" aria-hidden="true">NEW</span>
    <div class="tag__body">
      <span class="tag__price">$29</span>
    </div>
  </div>
</main>

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

$duration: $dur-base;                                    // 리본이 흔들리는 시간
$easing: $ease-out;
$color: $subject-blue;                                   // 사용 안 함(참고용)

@include stage($stage-orange);

.tag {
  position: relative;
  width: min(140px, 46vw);
  aspect-ratio: 4 / 3;
  border-radius: $r-card;
  background: $stage-paper;
  box-shadow: $shadow-press;
  overflow: hidden;
  display: grid;
  place-items: center;
  outline: none;
  cursor: pointer;
}
.tag__ribbon {
  position: absolute; top: 14px; right: -34px;
  width: 120px; padding: 4px 0;
  text-align: center;
  transform: rotate(35deg);
  background: repeating-linear-gradient(115deg, #dcb9d1 0 10%, #b9d9dc 10% 20%, #c8dcb9 20% 30%, #dcdab9 30% 40%);
  background-size: 220% 220%;
  background-position: 0 0;
  font-size: 10px; font-weight: 800; letter-spacing: .05em; color: $stage-ink; font-family: inherit;
  box-shadow: 0 2px 6px rgba($stage-ink, .25);
  transition: transform $duration $easing, background-position $duration $easing;
}
.tag__price { font-weight: 700; font-size: 15px; color: $stage-ink; font-family: inherit; }

.tag:hover .tag__ribbon,
.tag:focus-visible .tag__ribbon { transform: rotate(30deg) translateY(-2px); background-position: 100% 40%; }

.tag.is-demo .tag__ribbon { animation: ribbon-sway $dur-loop $easing infinite; }

@keyframes ribbon-sway {
  0%, 15%   { transform: rotate(35deg) translateY(0);    background-position: 0 0; }
  40%       { transform: rotate(28deg) translateY(-3px); background-position: 100% 40%; }
  65%       { transform: rotate(38deg) translateY(2px);  background-position: 0 100%; }
  90%, 100% { transform: rotate(35deg) translateY(0);    background-position: 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  .tag__ribbon { transition: none; }
  .tag.is-demo .tag__ribbon { animation: none; }
}

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);
}

.tag {
  position: relative;
  width: min(140px, 46vw);
  aspect-ratio: 4/3;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  overflow: hidden;
  display: grid;
  place-items: center;
  outline: none;
  cursor: pointer;
}

.tag__ribbon {
  position: absolute;
  top: 14px;
  right: -34px;
  width: 120px;
  padding: 4px 0;
  text-align: center;
  transform: rotate(35deg);
  background: repeating-linear-gradient(115deg, #dcb9d1 0 10%, #b9d9dc 10% 20%, #c8dcb9 20% 30%, #dcdab9 30% 40%);
  background-size: 220% 220%;
  background-position: 0 0;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #17141a;
  font-family: inherit;
  box-shadow: 0 2px 6px rgba(23, 20, 26, 0.25);
  transition: transform 300ms ease-out, background-position 300ms ease-out;
}

.tag__price {
  font-weight: 700;
  font-size: 15px;
  color: #17141a;
  font-family: inherit;
}

.tag:hover .tag__ribbon,
.tag:focus-visible .tag__ribbon {
  transform: rotate(30deg) translateY(-2px);
  background-position: 100% 40%;
}

.tag.is-demo .tag__ribbon {
  animation: ribbon-sway 2s ease-out infinite;
}

@keyframes ribbon-sway {
  0%, 15% {
    transform: rotate(35deg) translateY(0);
    background-position: 0 0;
  }
  40% {
    transform: rotate(28deg) translateY(-3px);
    background-position: 100% 40%;
  }
  65% {
    transform: rotate(38deg) translateY(2px);
    background-position: 0 100%;
  }
  90%, 100% {
    transform: rotate(35deg) translateY(0);
    background-position: 0 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .tag__ribbon {
    transition: none;
  }
  .tag.is-demo .tag__ribbon {
    animation: none;
  }
}

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

export type PriceTagRibbonProps = {
  ribbon: string;
  price: string;
  /** 리본이 흔들리는 시간 (기본 300ms) */
  duration?: number;
  easing?: string;
  /** 사용 안 함(참고용) */
  color?: string;
};

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };

export default function PriceTagRibbon({
  ribbon,
  price,
  duration = 300,
  easing = "ease-out",
  color = "#2f6df6",
}: PriceTagRibbonProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.tag} style={vars} tabIndex={0}>
      <span className={styles.ribbon} aria-hidden="true">{ribbon}</span>
      <div className={styles.body}>
        <span className={styles.price}>{price}</span>
      </div>
    </div>
  );
}