04Monospace label list

<main class="stage">
  <ul class="list is-demo">
    <li class="list__row list__row--1"><span class="list__num">01</span><span class="list__text">Real-time collaborative editing</span></li>
    <li class="list__row list__row--2"><span class="list__num">02</span><span class="list__text">Keyboard-only command bar</span></li>
    <li class="list__row list__row--3"><span class="list__num">03</span><span class="list__text">Per-version changelog</span></li>
  </ul>
</main>

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

$duration: $dur-loop;      // 줄 하나가 스치듯 나타났다 사라지는 한 주기
$easing: $ease-out;
$color: $subject-blue;

@include stage($stage-paper);

.list {
  list-style: none;
  margin: 0;
  padding: $sp-4;
  display: flex;
  flex-direction: column;
  gap: $sp-2;
  width: clamp(220px, 76vw, 320px);
  background: $subject-ink;
  border-radius: $r-card;
  box-shadow: $shadow-raised;
}
.list__row {
  display: flex;
  align-items: center;
  gap: $sp-4;
  padding: $sp-3 $sp-4;
  border-radius: $r-sm;
  // 데모 루프는 .is-demo 안에서만 — 정적(실사용) 상태는 opacity 1 이라야 글자 대비가 산다
  .list.is-demo & { animation-name: rowSweep; }
  animation-duration: $duration;
  animation-timing-function: $easing;
  animation-iteration-count: infinite;
}
.list__row--1 { animation-delay: 0s; }
.list__row--2 { animation-delay: $duration * -0.67; }
.list__row--3 { animation-delay: $duration * -0.34; }

.list__num {
  font: 700 clamp(11px, 2.8vw, 13px)/1 "Courier New", ui-monospace, monospace;
  color: $subject-blue-light;   // 먹 면 위 파란 글자 — AA 4.5 (blog-design 글자 대비)
}
.list__text {
  color: $subject-cream;
  font: 600 clamp(11px, 2.8vw, 13px)/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@keyframes rowSweep {
  0%, 62%, 100% { opacity: .55; background: transparent; transform: translateY(0); }
  17%           { opacity: 1; background: rgba($color, .12); transform: translateY(-2px); }
}

@media (prefers-reduced-motion: reduce) {
  .list__row { animation: none !important; opacity: .85; background: transparent; 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);
}

.list {
  list-style: none;
  margin: 0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: clamp(220px, 76vw, 320px);
  background: #17141a;
  border-radius: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.list__row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  border-radius: 8px;
}
.list.is-demo .list__row {
  animation-name: rowSweep;
}
.list__row {
  animation-duration: 2s;
  animation-timing-function: ease-out;
  animation-iteration-count: infinite;
}

.list__row--1 {
  animation-delay: 0s;
}

.list__row--2 {
  animation-delay: -1.34s;
}

.list__row--3 {
  animation-delay: -0.68s;
}

.list__num {
  font: 700 clamp(11px, 2.8vw, 13px)/1 "Courier New", ui-monospace, monospace;
  color: #5b8cf8;
}

.list__text {
  color: #fff7e6;
  font: 600 clamp(11px, 2.8vw, 13px)/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@keyframes rowSweep {
  0%, 62%, 100% {
    opacity: 0.55;
    background: transparent;
    transform: translateY(0);
  }
  17% {
    opacity: 1;
    background: rgba(47, 109, 246, 0.12);
    transform: translateY(-2px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .list__row {
    animation: none !important;
    opacity: 0.85;
    background: transparent;
    transform: none;
  }
}

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

export type FeatureListLinearProps = {
  rows?: [string, string, string];
  /** 줄 하나가 스치듯 나타났다 사라지는 한 주기(기본 2000ms) */
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function FeatureListLinear({
  rows = ["실시간 협업 편집", "키보드 전용 커맨드바", "버전별 변경 로그"],
  duration = 2000,
  easing = "ease-out",
  color = "#2f6df6",
}: FeatureListLinearProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  const delays = ["0s", `${-duration * 0.67}ms`, `${-duration * 0.34}ms`];

  return (
    <ul className={styles.list} style={vars}>
      {rows.map((text, i) => (
        <li key={text} className={styles.row} style={{ animationDelay: delays[i] }}>
          <span className={styles.num}>{String(i + 1).padStart(2, "0")}</span>
          <span className={styles.text}>{text}</span>
        </li>
      ))}
    </ul>
  );
}