07기능 하이라이트 펄스 배지

<main class="stage is-demo">
  <ul class="menu" aria-label="사이드 메뉴">
    <li class="mi">대시보드</li>
    <li class="mi mi--new">
      <span class="si" aria-hidden="true"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256" fill="currentColor"><path d="M194.82,151.43l-55.09,20.3-20.3,55.09a7.92,7.92,0,0,1-14.86,0l-20.3-55.09-55.09-20.3a7.92,7.92,0,0,1,0-14.86l55.09-20.3,20.3-55.09a7.92,7.92,0,0,1,14.86,0l20.3,55.09,55.09,20.3A7.92,7.92,0,0,1,194.82,151.43Z" opacity="0.2"/><path d="M197.58,129.06,146,110l-19-51.62a15.92,15.92,0,0,0-29.88,0L78,110l-51.62,19a15.92,15.92,0,0,0,0,29.88L78,178l19,51.62a15.92,15.92,0,0,0,29.88,0L146,178l51.62-19a15.92,15.92,0,0,0,0-29.88ZM137,164.22a8,8,0,0,0-4.74,4.74L112,223.85,91.78,169A8,8,0,0,0,87,164.22L32.15,144,87,123.78A8,8,0,0,0,91.78,119L112,64.15,132.22,119a8,8,0,0,0,4.74,4.74L191.85,144ZM144,40a8,8,0,0,1,8-8h16V16a8,8,0,0,1,16,0V32h16a8,8,0,0,1,0,16H184V64a8,8,0,0,1-16,0V48H152A8,8,0,0,1,144,40ZM248,88a8,8,0,0,1-8,8h-8v8a8,8,0,0,1-16,0V96h-8a8,8,0,0,1,0-16h8V72a8,8,0,0,1,16,0v8h8A8,8,0,0,1,248,88Z"/></svg></span>
      <span class="lb">자동화</span>
      <span class="dot" role="img" aria-label="새 기능"><i class="ring" aria-hidden="true"></i></span>
    </li>
    <li class="mi">리포트</li>
  </ul>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-loop;     // 2s — 링 한 번 퍼짐
$easing: $ease-out;
$color: $stage-orange;    // 주황 — 점·링 같은 표식 전용. 글자색으로는 쓰지 않는다

@include stage(#fff4ee);

.menu {
  box-sizing: border-box;
  width: min(100%, 216px);
  margin: 0; padding: $sp-2;
  list-style: none;
  display: grid; gap: $sp-1;
  border-radius: $r-card;
  background: #fff;
  border: 1px solid #f2ded3;
  box-shadow: 0 10px 24px rgba(23, 20, 26, .08);
}

.mi {
  position: relative;
  display: flex; align-items: center; gap: $sp-2;
  padding: $sp-2 $sp-3;
  border-radius: $r-control;
  font-size: 12px; font-weight: 600;
  color: #475569;
}
.mi--new { background: #fff7f2; color: $subject-ink; }

.si { display: block; width: 16px; height: 16px; flex: 0 0 auto; color: $color; }
.si svg { width: 100%; height: 100%; display: block; }
.lb { flex: 1 1 auto; }

// 한 겹(반짝 아이콘 감쇠 진자 — 개별 속성 rotate) — 줄에 매달린 스파클이 ±10deg 에서 감쇠해 멈춘다
.si { transform-origin: 50% 8%; rotate: 0deg; }   // 위 고정 중립 자세
.stage.is-demo .si { animation: swing $duration $ease-spring infinite; }

// 점은 절대 위치 — 줄 안에 자리를 차지하지 않으니 링이 퍼져도 글줄이 밀리지 않는다
.dot {
  position: absolute;
  right: 10px; top: 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: $color;
}
.ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  background: $color;
  opacity: .55;
  transform: scale(1);
}
.stage.is-demo .ring { animation: pulse $duration $easing infinite; }

// 한 겹(점 탄성 lerp + 자동화 줄 감쇠 흔들림) — 2026-09-15 형태 2차. 점과 링이 같은 2s 주기로 맞물려 심장박동 리듬을 만든다
// 한 겹 더(점 탄성 pop — 개별 속성 scale, 콤마 확장) — dot-throb 62% 소등 뒤 1.24s 에 두 번째 박동. 곱이 아닌 이중 맥박
.stage.is-demo .dot { animation: dot-throb $duration $ease-lerp-settle infinite, pop $duration $ease-spring infinite 1.24s; }
.stage.is-demo .mi--new { animation: row-sway $duration $ease-lerp-settle infinite; }

@keyframes dot-throb {
  0%       { transform: scale(1); }
  15%      { transform: scale(1.35); }
  32%      { transform: scale(.88); }
  48%      { transform: scale(1.1); }
  62%,100% { transform: scale(1); }
}
@keyframes row-sway {
  0%       { transform: translateX(0); }
  12%      { transform: translateX(1.5px); }
  26%      { transform: translateX(-1px); }
  40%      { transform: translateX(.5px); }
  55%,100% { transform: translateX(0); }
}

// 한 겹(개별 속성 키프레임) — 기존 transform 키프레임과 병렬 합성
// 감쇠 진자 ±10deg — 매달린 스파클. 진폭 비율 1 → .6 → .3 → .12 → 0
@keyframes swing {
  0%        { rotate: 0deg; }
  8%        { rotate: 10deg; }
  28%       { rotate: -6deg; }
  48%       { rotate: 3deg; }
  66%       { rotate: -1.2deg; }
  80%, 100% { rotate: 0deg; }
}
// 탄성 lerp — 1.32 → .86 → 1.06 → 1
@keyframes pop {
  0%        { scale: 1; }
  6%        { scale: 1.32; }
  16%       { scale: .86; }
  28%       { scale: 1.06; }
  38%, 100% { scale: 1; }
}

@keyframes pulse {
  0%        { opacity: .55; transform: scale(1); }
  70%, 100% { opacity: 0;   transform: scale(2.4); }
}

@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .ring { animation: none; opacity: 0; }
  .stage.is-demo .dot { animation: none; transform: none; scale: 1; }
  .stage.is-demo .mi--new { animation: none; transform: none; }
  .stage.is-demo .si { animation: none; rotate: 0deg; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #fff4ee;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.menu {
  box-sizing: border-box;
  width: min(100%, 216px);
  margin: 0;
  padding: 8px;
  list-style: none;
  display: grid;
  gap: 4px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid #f2ded3;
  box-shadow: 0 10px 24px rgba(23, 20, 26, 0.08);
}

.mi {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  color: #475569;
}

.mi--new {
  background: #fff7f2;
  color: #17141a;
}

.si {
  display: block;
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  color: #ff4d1f;
}

.si svg {
  width: 100%;
  height: 100%;
  display: block;
}

.lb {
  flex: 1 1 auto;
}

.si {
  transform-origin: 50% 8%;
  rotate: 0deg;
}

.stage.is-demo .si {
  animation: swing 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.dot {
  position: absolute;
  right: 10px;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff4d1f;
}

.ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #ff4d1f;
  opacity: 0.55;
  transform: scale(1);
}

.stage.is-demo .ring {
  animation: pulse 2s ease-out infinite;
}

.stage.is-demo .dot {
  animation: dot-throb 2s linear(0, 0.051, 0.176, 0.341, 0.518, 0.685, 0.831, 0.947, 1.032, 1.087, 1.117, 1.126, 1.121, 1.105, 1.085, 1.062, 1.041, 1.022, 1.008, 0.997, 1) infinite, pop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite 1.24s;
}

.stage.is-demo .mi--new {
  animation: row-sway 2s linear(0, 0.051, 0.176, 0.341, 0.518, 0.685, 0.831, 0.947, 1.032, 1.087, 1.117, 1.126, 1.121, 1.105, 1.085, 1.062, 1.041, 1.022, 1.008, 0.997, 1) infinite;
}

@keyframes dot-throb {
  0% {
    transform: scale(1);
  }
  15% {
    transform: scale(1.35);
  }
  32% {
    transform: scale(0.88);
  }
  48% {
    transform: scale(1.1);
  }
  62%, 100% {
    transform: scale(1);
  }
}
@keyframes row-sway {
  0% {
    transform: translateX(0);
  }
  12% {
    transform: translateX(1.5px);
  }
  26% {
    transform: translateX(-1px);
  }
  40% {
    transform: translateX(0.5px);
  }
  55%, 100% {
    transform: translateX(0);
  }
}
@keyframes swing {
  0% {
    rotate: 0deg;
  }
  8% {
    rotate: 10deg;
  }
  28% {
    rotate: -6deg;
  }
  48% {
    rotate: 3deg;
  }
  66% {
    rotate: -1.2deg;
  }
  80%, 100% {
    rotate: 0deg;
  }
}
@keyframes pop {
  0% {
    scale: 1;
  }
  6% {
    scale: 1.32;
  }
  16% {
    scale: 0.86;
  }
  28% {
    scale: 1.06;
  }
  38%, 100% {
    scale: 1;
  }
}
@keyframes pulse {
  0% {
    opacity: 0.55;
    transform: scale(1);
  }
  70%, 100% {
    opacity: 0;
    transform: scale(2.4);
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .ring {
    animation: none;
    opacity: 0;
  }
  .stage.is-demo .dot {
    animation: none;
    transform: none;
    scale: 1;
  }
  .stage.is-demo .mi--new {
    animation: none;
    transform: none;
  }
  .stage.is-demo .si {
    animation: none;
    rotate: 0deg;
  }
}

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

export type FeatureHighlightPulseProps = {
  duration?: number;
  easing?: string;
  color?: string;
  items?: string[];
  /** 펄스 배지를 붙일 항목의 순번 (0부터) */
  highlightIndex?: number;
  badgeLabel?: string;
};

export default function FeatureHighlightPulse({
  duration = 2000,
  easing = "ease-out",
  color = "#ff4d1f",
  items = ["Dashboard", "Automation", "Reports"],
  highlightIndex = 1,
  badgeLabel = "New feature",
}: FeatureHighlightPulseProps) {
  const vars: CSSProperties = {
    "--duration": `${duration}ms`,
    "--easing": easing,
    "--color": color,
  } as CSSProperties;

  return (
    <ul className={styles.menu} style={vars} aria-label="Side menu">
      {items.map((label, i) =>
        i === highlightIndex ? (
          <li className={`${styles.mi} ${styles.isNew}`} key={label}>
            <span className={styles.si} aria-hidden="true">
              <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256" fill="currentColor">
                <path d="M194.82,151.43l-55.09,20.3-20.3,55.09a7.92,7.92,0,0,1-14.86,0l-20.3-55.09-55.09-20.3a7.92,7.92,0,0,1,0-14.86l55.09-20.3,20.3-55.09a7.92,7.92,0,0,1,14.86,0l20.3,55.09,55.09,20.3A7.92,7.92,0,0,1,194.82,151.43Z" opacity="0.2" />
                <path d="M197.58,129.06,146,110l-19-51.62a15.92,15.92,0,0,0-29.88,0L78,110l-51.62,19a15.92,15.92,0,0,0,0,29.88L78,178l19,51.62a15.92,15.92,0,0,0,29.88,0L146,178l51.62-19a15.92,15.92,0,0,0,0-29.88ZM137,164.22a8,8,0,0,0-4.74,4.74L112,223.85,91.78,169A8,8,0,0,0,87,164.22L32.15,144,87,123.78A8,8,0,0,0,91.78,119L112,64.15,132.22,119a8,8,0,0,0,4.74,4.74L191.85,144ZM144,40a8,8,0,0,1,8-8h16V16a8,8,0,0,1,16,0V32h16a8,8,0,0,1,0,16H184V64a8,8,0,0,1-16,0V48H152A8,8,0,0,1,144,40ZM248,88a8,8,0,0,1-8,8h-8v8a8,8,0,0,1-16,0V96h-8a8,8,0,0,1,0-16h8V72a8,8,0,0,1,16,0v8h8A8,8,0,0,1,248,88Z" />
              </svg>
            </span>
            <span className={styles.lb}>{label}</span>
            {/* 점은 absolute — 줄 안에 자리를 차지하지 않으니 링이 퍼져도 글줄이 안 밀린다 */}
            <span className={styles.dot} role="img" aria-label={badgeLabel}>
              <i className={styles.ring} aria-hidden="true" />
            </span>
          </li>
        ) : (
          <li className={styles.mi} key={label}>{label}</li>
        )
      )}
    </ul>
  );
}