06空状態アイコンのバウンス

<main class="stage">
  <div class="empty is-demo">
    <span class="empty__icon" aria-hidden="true">
      <span class="empty__tray"></span>
      <span class="empty__divider"></span>
    </span>
    <p class="empty__text">検索結果がありません</p>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-loop;                               // 바운스 한 주기 시간
$easing: $ease-out;                                 // 위아래로 부드럽게
$color: $stage-ink;                                  // 아이콘 색

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

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(10px, 3vw, 14px);
  color: $color;

  &__icon {
    position: relative;
    width: 52px;
    height: 40px;
    transform: translateY(0);
  }

  &__tray {
    position: absolute; inset: 0;
    border: 3px solid currentColor;
    border-radius: $r-control;
  }

  &__divider {
    position: absolute;
    left: 3px; right: 3px; top: 13px;
    height: 0;
    border-top: 3px solid currentColor;
  }

  &__text {
    margin: 0;
    font-weight: 700;
    font-size: clamp(13px, 3.8vw, 15px);
    line-height: 1.3;
    font-family: inherit;
  }

  &.is-demo &__icon { animation: bounce $duration $easing infinite; }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

// ── 접근성: 움직임 줄이기 설정이면 정지 ────────────────────
@media (prefers-reduced-motion: reduce) {
  .empty.is-demo .empty__icon { animation: none !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);
}

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(10px, 3vw, 14px);
  color: #17141a;
}
.empty__icon {
  position: relative;
  width: 52px;
  height: 40px;
  transform: translateY(0);
}
.empty__tray {
  position: absolute;
  inset: 0;
  border: 3px solid currentColor;
  border-radius: 12px;
}
.empty__divider {
  position: absolute;
  left: 3px;
  right: 3px;
  top: 13px;
  height: 0;
  border-top: 3px solid currentColor;
}
.empty__text {
  margin: 0;
  font-weight: 700;
  font-size: clamp(13px, 3.8vw, 15px);
  line-height: 1.3;
  font-family: inherit;
}
.empty.is-demo .empty__icon {
  animation: bounce 2s ease-out infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .empty.is-demo .empty__icon {
    animation: none !important;
  }
}

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

export type EmptyStateBounceProps = {
  text: string;
  /** 바운스 한 주기 시간 (기본 2000ms) */
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function EmptyStateBounce({
  text,
  duration = 2000,
  easing = "ease-out",
  color = "#17141a",
}: EmptyStateBounceProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={styles.empty} style={vars}>
      <span className={styles.icon} aria-hidden="true">
        <span className={styles.tray} />
        <span className={styles.divider} />
      </span>
      <p className={styles.text}>{text}</p>
    </div>
  );
}