08Dòng thời gian hoạt động

<main class="stage">
  <ul class="tl-list is-demo" aria-label="Nhật ký hoạt động">
    <li class="tl-item" style="--n:0">
      <span class="tl-item__dot">
        <svg viewBox="0 0 256 256" aria-hidden="true"><g fill="currentColor"><path d="M224 128a96 96 0 0 1-144.07 83.11l-37.39 12.47a8 8 0 0 1-10.12-10.12l12.47-37.39A96 96 0 1 1 224 128" opacity=".2"/><path d="M128 24a104 104 0 0 0-91.82 152.88l-11.35 34.05a16 16 0 0 0 20.24 20.24l34.05-11.35A104 104 0 1 0 128 24m0 192a87.87 87.87 0 0 1-44.06-11.81a8 8 0 0 0-6.54-.67L40 216l12.47-37.4a8 8 0 0 0-.66-6.54A88 88 0 1 1 128 216"/></g></svg>
      </span>
      <div class="tl-item__body"><b>Bora</b> đã để lại bình luận<time>2 phút trước</time></div>
    </li>
    <li class="tl-item" style="--n:1">
      <span class="tl-item__dot">
        <svg viewBox="0 0 256 256" aria-hidden="true"><g fill="currentColor"><path d="M216 48v160H40V48a16 16 0 0 1 16-16h144a16 16 0 0 1 16 16" opacity=".2"/><path d="M224 144v64a8 8 0 0 1-8 8H40a8 8 0 0 1-8-8v-64a8 8 0 0 1 16 0v56h160v-56a8 8 0 0 1 16 0M93.66 77.66L120 51.31V144a8 8 0 0 0 16 0V51.31l26.34 26.35a8 8 0 0 0 11.32-11.32l-40-40a8 8 0 0 0-11.32 0l-40 40a8 8 0 0 0 11.32 11.32"/></g></svg>
      </span>
      <div class="tl-item__body"><b>Ji-ho</b> đã tải lên một tệp<time>18 phút trước</time></div>
    </li>
    <li class="tl-item" style="--n:2">
      <span class="tl-item__dot">
        <svg viewBox="0 0 256 256" aria-hidden="true"><g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2"/><path d="M173.66 98.34a8 8 0 0 1 0 11.32l-56 56a8 8 0 0 1-11.32 0l-24-24a8 8 0 0 1 11.32-11.32L112 148.69l50.34-50.35a8 8 0 0 1 11.32 0M232 128A104 104 0 1 1 128 24a104.11 104.11 0 0 1 104 104m-16 0a88 88 0 1 0-88 88a88.1 88.1 0 0 0 88-88"/></g></svg>
      </span>
      <div class="tl-item__body">Công việc <b>Kiểm tra UI thanh toán</b>  hoàn thành<time>1 giờ trước</time></div>
    </li>
  </ul>
</main>

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

$duration: $dur-enter;                                 // 항목이 떠오르는 시간
$easing: $ease-out;
$color: $subject-lilac;                                // 세로선·점 배경(파스텔)

@include stage($stage-paper);

.tl-list {
  list-style: none;
  margin: 0;
  padding: 0;
  width: min(240px, 78vw);
  position: relative;
}
.tl-list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: #ece3ff;                 // $subject-lilac 를 흰 배경에 옅게 섞은 불투명 톤
}

.tl-item {
  position: relative;
  display: flex;
  gap: $sp-3;
  padding: $sp-2 0;
  opacity: 0;
  transform: translateY(10px);
}

.tl-item__dot {
  position: relative;
  z-index: 1;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: $r-pill;
  background: $color;
  color: $stage-paper;
}
.tl-item:nth-child(2) .tl-item__dot { background: $subject-mint; }
.tl-item:nth-child(3) .tl-item__dot { background: $subject-pink; }
.tl-item__dot svg { width: 16px; height: 16px; }

.tl-item__body { font-size: 12px; color: $stage-ink; line-height: 1.5; padding-top: $sp-2; }
.tl-item__body b { font-weight: 700; }
.tl-item__body time { display: block; font-size: 11px; color: rgba(23, 20, 26, .5); }

// 데모 강제 루프 — 위에서부터 순서대로 옅게 떠오름을 stagger keyframes 로
.tl-list.is-demo .tl-item {
  animation: tl-loop $dur-loop $easing infinite;
  animation-delay: calc(var(--n) * 140ms);
}

@keyframes tl-loop {
  0%        { opacity: 0; transform: translateY(10px); }
  20%, 90%  { opacity: 1; transform: translateY(0); }
  100%      { opacity: 0; transform: translateY(10px); }
}

@media (prefers-reduced-motion: reduce) {
  .tl-item { animation: none !important; opacity: 1; 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);
}

.tl-list {
  list-style: none;
  margin: 0;
  padding: 0;
  width: min(240px, 78vw);
  position: relative;
}

.tl-list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: #ece3ff;
}

.tl-item {
  position: relative;
  display: flex;
  gap: 12px;
  padding: 8px 0;
  opacity: 0;
  transform: translateY(10px);
}

.tl-item__dot {
  position: relative;
  z-index: 1;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #b9a0ff;
  color: #ffffff;
}

.tl-item:nth-child(2) .tl-item__dot {
  background: #4cd4a6;
}

.tl-item:nth-child(3) .tl-item__dot {
  background: #ff9ebb;
}

.tl-item__dot svg {
  width: 16px;
  height: 16px;
}

.tl-item__body {
  font-size: 12px;
  color: #17141a;
  line-height: 1.5;
  padding-top: 8px;
}

.tl-item__body b {
  font-weight: 700;
}

.tl-item__body time {
  display: block;
  font-size: 11px;
  color: rgba(23, 20, 26, 0.5);
}

.tl-list.is-demo .tl-item {
  animation: tl-loop 2s ease-out infinite;
  animation-delay: calc(var(--n) * 140ms);
}

@keyframes tl-loop {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  20%, 90% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(10px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .tl-item {
    animation: none !important;
    opacity: 1;
    transform: none;
  }
}

import { useEffect, useState, type CSSProperties, type ReactNode } from "react";
import styles from "./ActivityTimelineLog.module.scss";

export type ActivityEvent = { text: ReactNode; time: string; icon: "chat" | "upload" | "check" };

export type ActivityTimelineLogProps = {
  events: ActivityEvent[];
  /** 항목이 떠오르는 시간 (기본 600ms) */
  duration?: number;
  easing?: string;
  /** 세로선·점 배경(파스텔) */
  color?: string;
};

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

const ICONS: Record<ActivityEvent["icon"], ReactNode> = {
  chat: (
    <svg viewBox="0 0 256 256" aria-hidden="true"><g fill="currentColor"><path d="M224 128a96 96 0 0 1-144.07 83.11l-37.39 12.47a8 8 0 0 1-10.12-10.12l12.47-37.39A96 96 0 1 1 224 128" opacity=".2" /><path d="M128 24a104 104 0 0 0-91.82 152.88l-11.35 34.05a16 16 0 0 0 20.24 20.24l34.05-11.35A104 104 0 1 0 128 24m0 192a87.87 87.87 0 0 1-44.06-11.81a8 8 0 0 0-6.54-.67L40 216l12.47-37.4a8 8 0 0 0-.66-6.54A88 88 0 1 1 128 216" /></g></svg>
  ),
  upload: (
    <svg viewBox="0 0 256 256" aria-hidden="true"><g fill="currentColor"><path d="M216 48v160H40V48a16 16 0 0 1 16-16h144a16 16 0 0 1 16 16" opacity=".2" /><path d="M224 144v64a8 8 0 0 1-8 8H40a8 8 0 0 1-8-8v-64a8 8 0 0 1 16 0v56h160v-56a8 8 0 0 1 16 0M93.66 77.66L120 51.31V144a8 8 0 0 0 16 0V51.31l26.34 26.35a8 8 0 0 0 11.32-11.32l-40-40a8 8 0 0 0-11.32 0l-40 40a8 8 0 0 0 11.32 11.32" /></g></svg>
  ),
  check: (
    <svg viewBox="0 0 256 256" aria-hidden="true"><g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2" /><path d="M173.66 98.34a8 8 0 0 1 0 11.32l-56 56a8 8 0 0 1-11.32 0l-24-24a8 8 0 0 1 11.32-11.32L112 148.69l50.34-50.35a8 8 0 0 1 11.32 0M232 128A104 104 0 1 1 128 24a104.11 104.11 0 0 1 104 104m-16 0a88 88 0 1 0-88 88a88.1 88.1 0 0 0 88-88" /></g></svg>
  ),
};

/** 위에서부터 순서대로 옅게 떠오르는 stagger — CSS 변수 --n 을 각 li 에 주고 transition-delay 로 순서를 만든다 */
export default function ActivityTimelineLog({
  events,
  duration = 600,
  easing = "ease-out",
  color = "#b9a0ff",
}: ActivityTimelineLogProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  const [shown, setShown] = useState(false);
  useEffect(() => { const id = requestAnimationFrame(() => setShown(true)); return () => cancelAnimationFrame(id); }, []);
  return (
    <ul className={styles.list} style={vars} aria-label="활동 내역">
      {events.map((ev, i) => (
        <li key={i} className={`${styles.item} ${shown ? styles.shown : ""}`} data-i={i % 3} style={{ transitionDelay: `${i * 140}ms` }}>
          <span className={styles.dot}>{ICONS[ev.icon]}</span>
          <div className={styles.body}>{ev.text}<time>{ev.time}</time></div>
        </li>
      ))}
    </ul>
  );
}