05Xoay vòng (kurukuru)

<main class="stage">
  <button class="icon o-kuru is-demo" type="button" aria-label="Làm mới">
    <svg viewBox="0 0 24 24" width="28" height="28" aria-hidden="true"><path d="M20 12a8 8 0 1 1-2.34-5.66" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round"/><path d="M20 4v5h-5" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round"/></svg>
  </button>
  <span class="tag">Xoay tít</span>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: 1.6s;
$easing: cubic-bezier(.65, 0, .35, 1);
$color: $subject-cream;

// ── 데모 무대 ───────────────────────────────
@include stage($stage-ink);
.stage { position: relative; }

.icon {
  width: 60px;
  height: 60px;
  border: 0;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 247, 230, .1);
  color: $color;
  cursor: pointer;
}
.tag {
  position: absolute;
  top: $sp-4;
  right: $sp-4;
  padding: $sp-1 $sp-3;
  border-radius: $r-sm;
  background: rgba(255, 255, 255, .12);
  color: $subject-cream;
  font-weight: 700;
  font-size: 12px;
  line-height: 1;
  font-family: inherit;
  letter-spacing: .04em;
}

// ── linear 대신 구간마다 다른 지점을 지나게 해 한 박자 튕기는 듯한 회전을 만든다 ─────
.o-kuru {
  animation: o-kuru $duration $easing infinite;
}
@keyframes o-kuru {
  0%   { transform: rotate(0deg); }
  55%  { transform: rotate(230deg); }
  80%  { transform: rotate(330deg); }
  100% { transform: rotate(360deg); }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .o-kuru { animation: none; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.stage {
  position: relative;
}

.icon {
  width: 60px;
  height: 60px;
  border: 0;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 247, 230, 0.1);
  color: #fff7e6;
  cursor: pointer;
}

.tag {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff7e6;
  font-weight: 700;
  font-size: 12px;
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.04em;
}

.o-kuru {
  animation: o-kuru 1.6s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes o-kuru {
  0% {
    transform: rotate(0deg);
  }
  55% {
    transform: rotate(230deg);
  }
  80% {
    transform: rotate(330deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .o-kuru {
    animation: none;
  }
}

import type { CSSProperties, MouseEvent } from "react";
import styles from "./SpinRefreshIcon.module.scss";

export type SpinRefreshIconProps = {
  label?: string;
  /** 한 바퀴 도는 데 걸리는 시간 (기본 1600ms) */
  duration?: number;
  easing?: string;
  color?: string;
  onClick?: (e: MouseEvent<HTMLButtonElement>) => void;
};

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

export default function SpinRefreshIcon({
  label = "새로고침",
  duration = 1600,
  easing = "cubic-bezier(.65,0,.35,1)",
  color = "#fff7e6",
  onClick,
}: SpinRefreshIconProps) {
  const vars: Vars = {
    "--duration": `${duration}ms`,
    "--easing": easing,
    "--color": color,
  };
  return (
    <button type="button" className={styles.icon} style={vars} aria-label={label} onClick={onClick}>
      <svg viewBox="0 0 24 24" width="28" height="28" aria-hidden="true">
        <path d="M20 12a8 8 0 1 1-2.34-5.66" fill="none" stroke="currentColor" strokeWidth={2.4} strokeLinecap="round" />
        <path d="M20 4v5h-5" fill="none" stroke="currentColor" strokeWidth={2.4} strokeLinecap="round" strokeLinejoin="round" />
      </svg>
    </button>
  );
}