02Activity feed timeline

<main class="stage">
  <div class="af">
    <div class="af__head">
      <strong class="af__title">Recent activity</strong>
      <button class="af__more" type="button">Show new activity</button>
    </div>
    <ul class="af__list">
      <li class="af__item">
        <span class="af__ic af__ic--check"><svg viewBox="0 0 256 256" width="12" height="12"><g fill="currentColor"><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 0"/></g></svg></span>
        <div class="af__body"><p class="af__text">Deployment completed</p><time class="af__time">3m ago</time></div>
      </li>
      <li class="af__item">
        <span class="af__ic af__ic--chat"><svg viewBox="0 0 256 256" width="12" height="12"><g fill="currentColor"><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 24"/></g></svg></span>
        <div class="af__body"><p class="af__text">Minji left a comment</p><time class="af__time">18m ago</time></div>
      </li>
      <li class="af__item af__item--new is-demo">
        <span class="af__ic af__ic--upload"><svg viewBox="0 0 256 256" width="12" height="12"><g fill="currentColor"><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="af__body"><p class="af__text">A new file was uploaded</p><time class="af__time">Just now</time></div>
      </li>
    </ul>
  </div>
</main>

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

$duration: $dur-enter;
$easing: $ease-pop;
$color: $subject-blue;

@include stage($stage-ink);

.af {
  box-sizing: border-box;
  width: min(260px, 88vw);
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $subject-cream;
}
.af__head { display: flex; align-items: center; justify-content: space-between; margin: 0 0 $sp-3; }
.af__title { font-size: 13px; }
.af__more {
  border: 1px solid rgba(255, 247, 230, .35);
  background: transparent;
  color: $subject-cream;
  font: inherit; font-weight: 700; font-size: 10px;
  padding: $sp-1 $sp-2;
  border-radius: $r-pill;
  cursor: pointer;
}
.af__more:disabled { opacity: .5; cursor: default; }
.af__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: $sp-3; }
.af__item { display: flex; align-items: flex-start; gap: $sp-2; }
.af__ic {
  flex: 0 0 auto;
  width: 20px; height: 20px;
  border-radius: 50%;
  display: grid; place-items: center;
  color: $stage-ink;
}
.af__ic--check  { background: $subject-mint; }
.af__ic--chat   { background: $subject-sky; }
.af__ic--upload { background: $color; color: $subject-cream; }
.af__body { min-width: 0; }
.af__text { margin: 0; font-size: 12px; line-height: 1.4; }
.af__time { font-size: 10px; color: rgba(255, 247, 230, .5); }

.af__item--new {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity $duration $easing, transform $duration $easing;
}
.af__item--new.af__item--shown { opacity: 1; transform: translateY(0); }

// ── 자동 루프: 새 활동 항목이 계속 나타났다 사라진다 ──────────────
.af__item--new.is-demo { animation: af-in 2s $easing infinite; }
@keyframes af-in {
  0%   { opacity: 0; transform: translateY(10px); }
  35%  { opacity: 1; transform: translateY(0); }
  80%  { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(10px); }
}

@media (max-width: 340px) {
  .af__text { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .af__item--new.is-demo { animation: none !important; opacity: 1; transform: translateY(0); }
  .af__item--new { transition: 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);
}

.af {
  box-sizing: border-box;
  width: min(260px, 88vw);
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #fff7e6;
}

.af__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 12px;
}

.af__title {
  font-size: 13px;
}

.af__more {
  border: 1px solid rgba(255, 247, 230, 0.35);
  background: transparent;
  color: #fff7e6;
  font: inherit;
  font-weight: 700;
  font-size: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  cursor: pointer;
}

.af__more:disabled {
  opacity: 0.5;
  cursor: default;
}

.af__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.af__item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.af__ic {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #17141a;
}

.af__ic--check {
  background: #4cd4a6;
}

.af__ic--chat {
  background: #6ec8ff;
}

.af__ic--upload {
  background: #2f6df6;
  color: #fff7e6;
}

.af__body {
  min-width: 0;
}

.af__text {
  margin: 0;
  font-size: 12px;
  line-height: 1.4;
}

.af__time {
  font-size: 10px;
  color: rgba(255, 247, 230, 0.5);
}

.af__item--new {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 600ms cubic-bezier(0.2, 1.4, 0.4, 1), transform 600ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.af__item--new.af__item--shown {
  opacity: 1;
  transform: translateY(0);
}

.af__item--new.is-demo {
  animation: af-in 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes af-in {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  35% {
    opacity: 1;
    transform: translateY(0);
  }
  80% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(10px);
  }
}
@media (max-width: 340px) {
  .af__text {
    font-size: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .af__item--new.is-demo {
    animation: none !important;
    opacity: 1;
    transform: translateY(0);
  }
  .af__item--new {
    transition: none;
  }
}

// 실제 동작: 버튼을 누르면 숨어 있던 새 활동 항목이 실제로 나타나고, 버튼은 다 쓰면 사라진다.
var btn = document.querySelector('.af__more');
var last = document.querySelector('.af__item--new');
btn.addEventListener('click', function () {
  last.classList.remove('is-demo');
  last.classList.add('af__item--shown');
  btn.disabled = true;
  btn.textContent = 'All caught up';
});

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

export type ActivityFeedProps = {
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function ActivityFeed({ duration = 600, easing = "cubic-bezier(.2,1.4,.4,1)", color = "#2f6df6" }: ActivityFeedProps) {
  const [shown, setShown] = useState(false);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={styles.af} style={vars}>
      <div className={styles.head}>
        <strong className={styles.title}>Recent activity</strong>
        <button type="button" className={styles.more} disabled={shown} onClick={() => setShown(true)}>
          {shown ? "All caught up" : "Show new activity"}
        </button>
      </div>
      <ul className={styles.list}>
        <li className={styles.item}>
          <span className={`${styles.ic} ${styles.check}`}>✓</span>
          <div><p className={styles.text}>Deployment completed</p><time className={styles.time}>3m ago</time></div>
        </li>
        <li className={styles.item}>
          <span className={`${styles.ic} ${styles.chat}`}>💬</span>
          <div><p className={styles.text}>Minji left a comment</p><time className={styles.time}>18m ago</time></div>
        </li>
        <li className={`${styles.item} ${styles.newItem} ${shown ? styles.shown : ""}`}>
          <span className={`${styles.ic} ${styles.upload}`}>↑</span>
          <div><p className={styles.text}>A new file was uploaded</p><time className={styles.time}>Just now</time></div>
        </li>
      </ul>
    </div>
  );
}