04Recessed icon list

<main class="stage">
  <ul class="listneu">
    <li class="listneu__row listneu__row--a is-demo">
      <span class="listneu__chip" aria-hidden="true"></span>
      <span class="listneu__text">Quick start</span>
    </li>
    <li class="listneu__row listneu__row--b is-demo">
      <span class="listneu__chip" aria-hidden="true"></span>
      <span class="listneu__text">Auto backup</span>
    </li>
    <li class="listneu__row listneu__row--c is-demo">
      <span class="listneu__chip" aria-hidden="true"></span>
      <span class="listneu__text">Real-time sharing</span>
    </li>
  </ul>
</main>

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

$duration: $dur-loop;       // 칩이 눌렸다 돌아오는 한 주기
$easing: $ease-pop;         // 눌림 곡선
$color: $subject-blue;      // 칩 강조 색

@include stage($stage-paper);

// 순백 배경은 밝은 쪽 그림자가 갈 곳이 없다(배경보다 밝힐 여지가 없음) — 6% 만큼 어둡게 눌러
// 두 방향 모두 보이게 한다. 실제 뉴모피즘 튜토리얼이 순백 대신 옅은 회색 캔버스에서 시작하는 이유다.
$neu-surface: mix($stage-paper, black, 94%);
$neu-light: rgba(mix($neu-surface, white, 40%), .85);
$neu-dark: rgba(mix($neu-surface, black, 40%), .4);

.listneu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: $sp-3;
  width: clamp(220px, 70vw, 300px);
}
.listneu__row {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: $sp-3;
  padding: $sp-2 $sp-4 $sp-2 $sp-2;
  border-radius: $r-pill;
  background: $neu-surface;
  box-shadow: 6px 6px 12px $neu-dark, -6px -6px 12px $neu-light;
}
.listneu__row--a { animation: chipPress $duration $easing infinite; animation-delay: 0s; }
.listneu__row--b { animation: chipPress $duration $easing infinite; animation-delay: -0.6s; }
.listneu__row--c { animation: chipPress $duration $easing infinite; animation-delay: -1.2s; }
.listneu__chip {
  flex: none;
  width: clamp(30px, 9vw, 36px);
  height: clamp(30px, 9vw, 36px);
  border-radius: $r-pill;
  background: $neu-surface;
  // 칩만 안쪽으로 파인 표면 — 튀어나온 알약 안에서 유일하게 눌려 있는 지점으로 대비를 만든다
  box-shadow: inset 3px 3px 6px $neu-dark, inset -3px -3px 6px $neu-light;
  position: relative;
}
.listneu__chip::after {
  content: "";
  position: absolute;
  inset: 30%;
  border-radius: 50%;
  background: $color;
}
.listneu__text {
  color: $subject-ink;
  font-weight: 600; font-size: clamp(12px, 2.8vw, 14px); line-height: 1;
}

// 데모: 행 전체가 살짝 눌리며(scale) 그림자 부호가 raised→inset 으로 뒤집혔다가 돌아온다
@keyframes chipPress {
  0%, 40%, 100% {
    transform: scale(1);
    box-shadow: 6px 6px 12px $neu-dark, -6px -6px 12px $neu-light;
  }
  70% {
    transform: scale(.96);
    box-shadow: inset 5px 5px 10px $neu-dark, inset -5px -5px 10px $neu-light;
  }
}

@media (prefers-reduced-motion: reduce) {
  .listneu__row { animation: none !important; transform: none; }
}

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

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

.listneu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: clamp(220px, 70vw, 300px);
}

.listneu__row {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px 8px 8px;
  border-radius: 999px;
  background: rgb(94%, 94%, 94%);
  box-shadow: 6px 6px 12px rgba(37.6%, 37.6%, 37.6%, 0.4), -6px -6px 12px rgba(97.6%, 97.6%, 97.6%, 0.85);
}

.listneu__row--a {
  animation: chipPress 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
  animation-delay: 0s;
}

.listneu__row--b {
  animation: chipPress 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
  animation-delay: -0.6s;
}

.listneu__row--c {
  animation: chipPress 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
  animation-delay: -1.2s;
}

.listneu__chip {
  flex: none;
  width: clamp(30px, 9vw, 36px);
  height: clamp(30px, 9vw, 36px);
  border-radius: 999px;
  background: rgb(94%, 94%, 94%);
  box-shadow: inset 3px 3px 6px rgba(37.6%, 37.6%, 37.6%, 0.4), inset -3px -3px 6px rgba(97.6%, 97.6%, 97.6%, 0.85);
  position: relative;
}

.listneu__chip::after {
  content: "";
  position: absolute;
  inset: 30%;
  border-radius: 50%;
  background: #2f6df6;
}

.listneu__text {
  color: #17141a;
  font-weight: 600;
  font-size: clamp(12px, 2.8vw, 14px);
  line-height: 1;
}

@keyframes chipPress {
  0%, 40%, 100% {
    transform: scale(1);
    box-shadow: 6px 6px 12px rgba(37.6%, 37.6%, 37.6%, 0.4), -6px -6px 12px rgba(97.6%, 97.6%, 97.6%, 0.85);
  }
  70% {
    transform: scale(0.96);
    box-shadow: inset 5px 5px 10px rgba(37.6%, 37.6%, 37.6%, 0.4), inset -5px -5px 10px rgba(97.6%, 97.6%, 97.6%, 0.85);
  }
}
@media (prefers-reduced-motion: reduce) {
  .listneu__row {
    animation: none !important;
    transform: none;
  }
}

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

export type FeatureListNeuProps = {
  items?: string[];
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function FeatureListNeu({
  items = ["빠른 시작", "자동 백업", "실시간 공유"],
  duration = 2000,
  easing = "cubic-bezier(.2,1.4,.4,1)",
  color = "#2f6df6",
}: FeatureListNeuProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <ul className={styles.list} style={vars}>
      {items.map((label, i) => (
        <li key={label} className={styles.row} style={{ animationDelay: `${-i * 0.6}s` }}>
          <span className={styles.chip} aria-hidden="true" />
          <span className={styles.text}>{label}</span>
        </li>
      ))}
    </ul>
  );
}