04Social mention cards that roll in from the side

<main class="stage">
  <section class="mn is-demo" id="mn" aria-label="Live mentions">
    <header class="mn__h">
      <span class="mn__ic" aria-hidden="true"><svg viewBox="0 0 256 256" width="1em" height="1em" fill="currentColor"><g><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2"/><path d="M128 24a104 104 0 0 0 0 208c21.51 0 44.1-6.48 60.43-17.33a8 8 0 0 0-8.86-13.33C166 210.38 146.21 216 128 216a88 88 0 1 1 88-88c0 26.45-10.88 32-20 32s-20-5.55-20-32V88a8 8 0 0 0-16 0v4.26a48 48 0 1 0 5.93 65.1c6 12 16.35 18.64 30.07 18.64c22.54 0 36-17.94 36-48A104.11 104.11 0 0 0 128 24m0 136a32 32 0 1 1 32-32a32 32 0 0 1-32 32"/></g></svg></span>
      <h2 class="mn__t">Live mentions</h2>
      <span class="mn__live"><span class="mn__pdot" aria-hidden="true"></span>live</span>
    </header>
    <ul class="mn__list" role="log" aria-live="polite" id="mn-list">
      <li class="mn__row mn__row--new" data-row="new">
        <div class="mn__fold"><div class="mn__card">
          <p class="mn__txt">Put it in the sidebar and the team got it right away</p>
          <p class="mn__who">@sora.codes <time class="mn__tm">now</time></p>
        </div></div>
      </li>
      <li class="mn__row" data-row="1">
        <div class="mn__fold"><div class="mn__card">
          <p class="mn__txt">Can I copy this checkout screen as is</p>
          <p class="mn__who">@yuna.builds <time class="mn__tm">2m ago</time></p>
        </div></div>
      </li>
      <li class="mn__row mn__row--old" data-row="2">
        <div class="mn__fold"><div class="mn__card">
          <p class="mn__txt">This waiting-for-reply widget is really pretty</p>
          <p class="mn__who">@minho.dev <time class="mn__tm">9m ago</time></p>
        </div></div>
      </li>
    </ul>
    <button class="mn__more" type="button" id="mn-more">Fetch mentions</button>
  </section>
</main>
<template id="mn-tpl"><li class="mn__row is-in"><div class="mn__fold"><div class="mn__card">
  <p class="mn__txt">Saved your activity feed article</p>
  <p class="mn__who">@dali.works <time class="mn__tm">now</time></p>
</div></div></li></template>

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

$duration: $dur-quick;
$easing: $ease-spring;
$color: $subject-cream;

@include stage($stage-orange);

$card: $subject-cream;
$ink: $stage-orange;

.mn {
  box-sizing: border-box;
  width: min(304px, 92vw);
  padding: $sp-3;
  border: 1px solid rgba(255, 247, 230, .35);
  border-radius: $r-card;
  background: rgba(23, 20, 26, .08);
  color: $subject-ink;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 12px;
  line-height: 1.3;
  overflow: hidden; // 굴러 들어오는 카드가 무대에 삐져나오지 않게
}

.mn__h {
  display: flex;
  align-items: center;
  gap: $sp-1;
  margin: 0 0 $sp-2;
}
.mn__ic { display: inline-flex; width: 14px; height: 14px; color: $color; }
.mn__t { margin: 0; font-size: 12px; font-weight: 700; }
.mn__live {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  color: $subject-ink;
  font-size: 10px;
  font-weight: 700;
}
.mn__pdot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: $stage-yellow;
}

.mn__list {
  display: grid;
  gap: $sp-2;
  margin: 0;
  padding: 0;
  list-style: none;
}

// ── 언급 카드 ─────────────────────────────────────
.mn__fold { display: grid; grid-template-rows: 1fr; }
.mn__card {
  min-height: 0;
  padding: $sp-2;
  border-radius: $r-sm;
  background: $card;
  color: $subject-ink;
}
.mn__txt { margin: 0; font-size: 12px; font-weight: 700; line-height: 1.35; }
.mn__who {
  display: flex;
  align-items: center;
  gap: $sp-1;
  margin: $sp-1 0 0;
  color: $subject-blue-deep;
  font-size: 11px;
  font-weight: 700;
}
.mn__tm { color: rgba(23, 20, 26, .72); font-size: 10px; }

.mn__row--new .mn__fold { grid-template-rows: 0fr; }

// 사람이 눌러 넣은 카드: 옆에서 굴러 들어와 살짝 틀어졌다 바로 선다 (is-in 동안만)
.mn__row.is-in .mn__card { animation: mn-roll $dur-enter $ease-pop both; }
@keyframes mn-roll {
  from { transform: translateX(118%) rotate(6deg); }
  60% { transform: translateX(-4%) rotate(-2deg); }
  to { transform: translateX(0) rotate(0deg); }
}

.mn__more {
  display: inline-flex;
  align-items: center;
  margin: $sp-2 0 0;
  padding: $sp-1 $sp-3;
  border: 1px solid rgba(255, 247, 230, .5);
  border-radius: $r-pill;
  background: transparent;
  color: $subject-ink;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
  cursor: pointer;
}
.mn__more:focus-visible { outline: 2px solid $stage-yellow; outline-offset: 2px; }
.mn__more:active { transform: scale(.94); }

// ── 격자 미리보기 전용 2초 루프 ─────────────────────
// 펼침은 컷으로 자르고, 카드는 옆에서 굴러 들어온다 — 퇴장은 재현하지 않는다
@keyframes mn-fold-in {
  0%, 17% { grid-template-rows: 0fr; }
  18% { grid-template-rows: 1fr; }
  18.1%, 86% { grid-template-rows: 1fr; }
  87%, 100% { grid-template-rows: 0fr; }
}
@keyframes mn-card-roll {
  0%, 18% { transform: translateX(118%) rotate(6deg); }
  30%, 86% { transform: translateX(0) rotate(0deg); }
  87%, 100% { transform: translateX(118%) rotate(6deg); }
}
@keyframes mn-bump-1 {
  0%, 18% { transform: translateY(0); }
  23% { transform: translateY(3px); }
  29%, 86% { transform: translateY(0); }
  87%, 100% { transform: translateY(0); }
}
@keyframes mn-pdot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.45); opacity: .6; }
}
@keyframes mn-btn-breath {
  0%, 17% { transform: translateY(0); }
  22% { transform: translateY(2px); }
  27%, 86% { transform: translateY(0); }
  87%, 100% { transform: translateY(0); }
}

.mn.is-demo {
  .mn__row--new .mn__fold {
    animation-name: mn-fold-in;
    animation-duration: $dur-loop;
    animation-timing-function: steps(1, end);
    animation-iteration-count: infinite;
  }
  .mn__row--new .mn__card {
    animation-name: mn-card-roll;
    animation-duration: $dur-loop;
    animation-timing-function: $easing;
    animation-iteration-count: infinite;
  }
  .mn__row[data-row="1"] .mn__card {
    animation-name: mn-bump-1;
    animation-duration: $dur-loop;
    animation-timing-function: $easing;
    animation-iteration-count: infinite;
  }
  .mn__pdot {
    animation-name: mn-pdot;
    animation-duration: 700ms;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
  }
  .mn__more {
    animation-name: mn-btn-breath;
    animation-duration: $dur-loop;
    animation-timing-function: $easing;
    animation-iteration-count: infinite;
  }
}

@media (max-width: 340px) {
  .mn { padding: $sp-2; font-size: 11px; }
  .mn__h { margin-bottom: $sp-1; }
  .mn__card { padding: $sp-2; }
  .mn__txt { font-size: 11px; }
  .mn__row--old { display: none; } // 좁은 화면에서는 오래된 언급부터 비운다
  .mn__more { margin-top: $sp-1; padding: 0 $sp-3; }
}

@media (prefers-reduced-motion: reduce) {
  .mn__row.is-in .mn__card { animation: none !important; }
  .mn__more:active { transform: none; }
  .mn.is-demo .mn__row--new .mn__fold,
  .mn.is-demo .mn__row--new .mn__card,
  .mn.is-demo .mn__row[data-row="1"] .mn__card,
  .mn.is-demo .mn__pdot,
  .mn.is-demo .mn__more { animation: none !important; transform: none !important; }
  // 움직임만 끄고 결과 상태는 남긴다 — 새 언급은 펼쳐진 채
  .mn.is-demo .mn__row--new .mn__fold { grid-template-rows: 1fr !important; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.mn {
  box-sizing: border-box;
  width: min(304px, 92vw);
  padding: 12px;
  border: 1px solid rgba(255, 247, 230, 0.35);
  border-radius: 16px;
  background: rgba(23, 20, 26, 0.08);
  color: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-size: 12px;
  line-height: 1.3;
  overflow: hidden;
}

.mn__h {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 0 8px;
}

.mn__ic {
  display: inline-flex;
  width: 14px;
  height: 14px;
  color: #fff7e6;
}

.mn__t {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
}

.mn__live {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  color: #17141a;
  font-size: 10px;
  font-weight: 700;
}

.mn__pdot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ffd23f;
}

.mn__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mn__fold {
  display: grid;
  grid-template-rows: 1fr;
}

.mn__card {
  min-height: 0;
  padding: 8px;
  border-radius: 8px;
  background: #fff7e6;
  color: #17141a;
}

.mn__txt {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
}

.mn__who {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 4px 0 0;
  color: #0a4fe8;
  font-size: 11px;
  font-weight: 700;
}

.mn__tm {
  color: rgba(23, 20, 26, 0.72);
  font-size: 10px;
}

.mn__row--new .mn__fold {
  grid-template-rows: 0fr;
}

.mn__row.is-in .mn__card {
  animation: mn-roll 600ms cubic-bezier(0.2, 1.4, 0.4, 1) both;
}

@keyframes mn-roll {
  from {
    transform: translateX(118%) rotate(6deg);
  }
  60% {
    transform: translateX(-4%) rotate(-2deg);
  }
  to {
    transform: translateX(0) rotate(0deg);
  }
}
.mn__more {
  display: inline-flex;
  align-items: center;
  margin: 8px 0 0;
  padding: 4px 12px;
  border: 1px solid rgba(255, 247, 230, 0.5);
  border-radius: 999px;
  background: transparent;
  color: #17141a;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
  cursor: pointer;
}

.mn__more:focus-visible {
  outline: 2px solid #ffd23f;
  outline-offset: 2px;
}

.mn__more:active {
  transform: scale(0.94);
}

@keyframes mn-fold-in {
  0%, 17% {
    grid-template-rows: 0fr;
  }
  18% {
    grid-template-rows: 1fr;
  }
  18.1%, 86% {
    grid-template-rows: 1fr;
  }
  87%, 100% {
    grid-template-rows: 0fr;
  }
}
@keyframes mn-card-roll {
  0%, 18% {
    transform: translateX(118%) rotate(6deg);
  }
  30%, 86% {
    transform: translateX(0) rotate(0deg);
  }
  87%, 100% {
    transform: translateX(118%) rotate(6deg);
  }
}
@keyframes mn-bump-1 {
  0%, 18% {
    transform: translateY(0);
  }
  23% {
    transform: translateY(3px);
  }
  29%, 86% {
    transform: translateY(0);
  }
  87%, 100% {
    transform: translateY(0);
  }
}
@keyframes mn-pdot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.45);
    opacity: 0.6;
  }
}
@keyframes mn-btn-breath {
  0%, 17% {
    transform: translateY(0);
  }
  22% {
    transform: translateY(2px);
  }
  27%, 86% {
    transform: translateY(0);
  }
  87%, 100% {
    transform: translateY(0);
  }
}
.mn.is-demo .mn__row--new .mn__fold {
  animation-name: mn-fold-in;
  animation-duration: 2s;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}
.mn.is-demo .mn__row--new .mn__card {
  animation-name: mn-card-roll;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}
.mn.is-demo .mn__row[data-row="1"] .mn__card {
  animation-name: mn-bump-1;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}
.mn.is-demo .mn__pdot {
  animation-name: mn-pdot;
  animation-duration: 700ms;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
.mn.is-demo .mn__more {
  animation-name: mn-btn-breath;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

@media (max-width: 340px) {
  .mn {
    padding: 8px;
    font-size: 11px;
  }
  .mn__h {
    margin-bottom: 4px;
  }
  .mn__card {
    padding: 8px;
  }
  .mn__txt {
    font-size: 11px;
  }
  .mn__row--old {
    display: none;
  }
  .mn__more {
    margin-top: 4px;
    padding: 0 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .mn__row.is-in .mn__card {
    animation: none !important;
  }
  .mn__more:active {
    transform: none;
  }
  .mn.is-demo .mn__row--new .mn__fold,
  .mn.is-demo .mn__row--new .mn__card,
  .mn.is-demo .mn__row[data-row="1"] .mn__card,
  .mn.is-demo .mn__pdot,
  .mn.is-demo .mn__more {
    animation: none !important;
    transform: none !important;
  }
  .mn.is-demo .mn__row--new .mn__fold {
    grid-template-rows: 1fr !important;
  }
}

// 실제 동작: 언급 불러오기를 누르면 다음 언급이 카드로 굴러 들어와 맨 위에 놓인다 (등장만).
// 목록은 role="log" + aria-live="polite" — 새 언급이 낭독기에도 전해진다.
var mn = document.getElementById('mn');
var mnList = document.getElementById('mn-list');
document.getElementById('mn-more').addEventListener('click', function () {
  mn.classList.remove('is-demo');
  var row = document.getElementById('mn-tpl').content.firstElementChild.cloneNode(true);
  mnList.insertBefore(row, mnList.firstChild);
  row.addEventListener('animationend', function () { row.classList.remove('is-in'); }, { once: true });
});

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

export type SocialMentionRollProps = {
  heading?: string;
  groupLabel?: string;
  liveLabel?: string;
  moreLabel?: string;
  nowLabel?: string;
  cards?: { key: string; handle: string; text: string; tm: string }[];
  demo?: boolean;
  duration?: number;
  easing?: string;
  color?: string;
};

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

function AtIcon() {
  return (
    <svg viewBox="0 0 256 256" width="1em" height="1em" fill="currentColor">
      <g>
        <path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2" />
        <path d="M128 24a104 104 0 0 0 0 208c21.51 0 44.1-6.48 60.43-17.33a8 8 0 0 0-8.86-13.33C166 210.38 146.21 216 128 216a88 88 0 1 1 88-88c0 26.45-10.88 32-20 32s-20-5.55-20-32V88a8 8 0 0 0-16 0v4.26a48 48 0 1 0 5.93 65.1c6 12 16.35 18.64 30.07 18.64c22.54 0 36-17.94 36-48A104.11 104.11 0 0 0 128 24m0 136a32 32 0 1 1 32-32a32 32 0 0 1-32 32" />
      </g>
    </svg>
  );
}

const DEFAULT_CARDS = [
  { key: "m1", handle: "@yuna.builds", text: "Can I copy this checkout screen as is", tm: "2m ago" },
  { key: "m2", handle: "@minho.dev", text: "This waiting-for-reply widget is really pretty", tm: "9m ago" },
];

export default function SocialMentionRoll({
  heading = "Live mentions",
  groupLabel = "Live mentions",
  liveLabel = "live",
  moreLabel = "Fetch mentions",
  nowLabel = "now",
  cards = DEFAULT_CARDS,
  demo = true,
  duration = 220,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#fff7e6",
}: SocialMentionRollProps) {
  const [live, setLive] = useState(demo);
  const [rows, setRows] = useState(cards);

  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  function more() {
    setLive(false);
    setRows((r) => [{ key: String(Date.now()), handle: "@dali.works", text: "Saved your activity feed article", tm: nowLabel }, ...r]);
  }

  const cls = [styles.mn, live ? styles.isDemo : ""].filter(Boolean).join(" ");

  return (
    <section className={cls} style={vars} aria-label={groupLabel}>
      <header className={styles.h}>
        <span className={styles.ic} aria-hidden="true"><AtIcon /></span>
        <h2 className={styles.t}>{heading}</h2>
        <span className={styles.liveTag}>
          <span className={styles.pdot} aria-hidden="true"></span>
          {liveLabel}
        </span>
      </header>
      <ul className={styles.list} role="log" aria-live="polite">
        <li className={styles.rowNew}>
          <div className={styles.fold}>
            <div className={styles.card}>
              <p className={styles.txt}>Put it in the sidebar and the team got it right away</p>
              <p className={styles.who}>@sora.codes <time className={styles.tm}>{nowLabel}</time></p>
            </div>
          </div>
        </li>
        {rows.map((r, i) => (
          <li key={r.key} className={[styles.row, i === 0 ? styles.row1 : "", i === rows.length - 1 ? styles.rowOld : ""].filter(Boolean).join(" ")}>
            <div className={styles.fold}>
              <div className={i === 0 ? styles.cardIn : styles.card}>
                <p className={styles.txt}>{r.text}</p>
                <p className={styles.who}>{r.handle} <time className={styles.tm}>{r.tm}</time></p>
              </div>
            </div>
          </li>
        ))}
      </ul>
      <button className={styles.more} type="button" onClick={more}>{moreLabel}</button>
    </section>
  );
}