04再試行の矢印が回るオフライン

<main class="stage">
  <section class="of is-demo" aria-labelledby="of-t">
    <span class="of__icon" aria-hidden="true"><svg viewBox="0 0 256 256" width="1em" height="1em"><g fill="currentColor"><path d="m238.2 87.69l-104 125.43a8 8 0 0 1-12.3 0L17.8 87.69a7.79 7.79 0 0 1 1.31-11.21a180.75 180.75 0 0 1 217.78 0a7.79 7.79 0 0 1 1.31 11.21" opacity=".2"/><path d="M53.92 34.62a8 8 0 1 0-11.84 10.76l4.55 5A188 188 0 0 0 14.28 70.1a15.93 15.93 0 0 0-6.17 10.81a15.65 15.65 0 0 0 3.54 11.89l104 125.43A15.93 15.93 0 0 0 128 224a15.93 15.93 0 0 0 12.31-5.77l28.1-33.88l33.67 37a8 8 0 1 0 11.84-10.76ZM128 208L24.09 82.74a171.5 171.5 0 0 1 33.82-19.95l99.63 109.6ZM244.35 92.8l-49.42 59.58a8 8 0 0 1-12.32-10.21l49.3-59.43A170.76 170.76 0 0 0 128 48a175 175 0 0 0-32.39 3a8 8 0 1 1-3-15.72A190.6 190.6 0 0 1 128 32a186.67 186.67 0 0 1 113.72 38.1a15.93 15.93 0 0 1 6.17 10.81a15.65 15.65 0 0 1-3.54 11.89"/></g></svg></span>
    <h2 class="of__title" id="of-t">接続が切れました</h2>
    <p class="of__sub" id="of-s" data-busy="接続を確認中" data-again="まだ接続できません・試行{n}回" aria-live="polite">一覧を読み込めませんでした</p>
    <button class="of__btn" type="button" id="of-b">
      <span class="of__arrow" aria-hidden="true"><svg viewBox="0 0 256 256" width="1em" height="1em"><g fill="currentColor"><path d="M216 128a88 88 0 1 1-88-88a88 88 0 0 1 88 88" opacity=".2"/><path d="M224 48v48a8 8 0 0 1-8 8h-48a8 8 0 0 1 0-16h28.69l-14.63-14.63a79.56 79.56 0 0 0-56.13-23.43h-.45a79.52 79.52 0 0 0-55.89 22.77a8 8 0 0 1-11.18-11.44a96 96 0 0 1 135 .79L208 76.69V48a8 8 0 0 1 16 0m-37.59 135.29a80 80 0 0 1-112.47-.66L59.31 168H88a8 8 0 0 0 0-16H40a8 8 0 0 0-8 8v48a8 8 0 0 0 16 0v-28.69l14.63 14.63A95.43 95.43 0 0 0 130 222.06h.53a95.36 95.36 0 0 0 67.07-27.33a8 8 0 0 0-11.18-11.44Z"/></g></svg></span>
      <span class="of__btn-t">再試行</span>
    </button>
  </section>
</main>

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

$duration: $dur-loop;
$easing: linear;
$color: $subject-blue-deep;

@include stage($stage-paper);

.of {
  box-sizing: border-box;
  width: min(248px, 86vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-2;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  text-align: center;
  color: $subject-ink;
}

.of__icon {
  display: block;
  font-size: clamp(38px, 12vw, 52px);
  line-height: 0;
  color: rgba(23, 20, 26, .42);
}
.of__title {
  margin: 0;
  font-size: clamp(12px, 4vw, 14px);
  line-height: 1.3;
  font-weight: 800;
}
.of__sub {
  margin: 0;
  min-height: 14px;
  font-size: 11px;
  line-height: 14px;
  font-weight: 500;
  color: rgba(23, 20, 26, .72);   // AA 4.5 (blog-design)
}
.of__btn {
  height: 30px;
  margin: 0;
  padding: 0 $sp-4;
  display: inline-flex;
  align-items: center;
  gap: $sp-2;
  border: 0;
  border-radius: $r-pill;
  background: $color;
  color: $subject-cream;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}
.of__btn:disabled { opacity: .64; cursor: default; }
.of__btn:focus-visible { outline: 2px solid $subject-ink; outline-offset: 2px; }
.of__arrow {
  display: block;
  font-size: 14px;
  line-height: 0;
}
.of__btn-t { line-height: 1; }

// ── 자동 루프: 화살표가 한 방향으로만 돈다. 360deg 끝이 0deg 와 같은 그림이라 되감기가 없다 ──
.of.is-demo .of__arrow,
.of.is-trying .of__arrow { animation: of-turn $duration $easing infinite; }
@keyframes of-turn {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.of.is-demo .of__icon { animation: of-dim $duration ease-in-out infinite; }
@keyframes of-dim {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .46; transform: scale(.94); }
}

@media (prefers-reduced-motion: reduce) {
  .of.is-demo .of__arrow,
  .of.is-trying .of__arrow,
  .of.is-demo .of__icon { animation: none !important; }
}

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);
}

.of {
  box-sizing: border-box;
  width: min(248px, 86vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  text-align: center;
  color: #17141a;
}

.of__icon {
  display: block;
  font-size: clamp(38px, 12vw, 52px);
  line-height: 0;
  color: rgba(23, 20, 26, 0.42);
}

.of__title {
  margin: 0;
  font-size: clamp(12px, 4vw, 14px);
  line-height: 1.3;
  font-weight: 800;
}

.of__sub {
  margin: 0;
  min-height: 14px;
  font-size: 11px;
  line-height: 14px;
  font-weight: 500;
  color: rgba(23, 20, 26, 0.72);
}

.of__btn {
  height: 30px;
  margin: 0;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  background: #0a4fe8;
  color: #fff7e6;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.of__btn:disabled {
  opacity: 0.64;
  cursor: default;
}

.of__btn:focus-visible {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.of__arrow {
  display: block;
  font-size: 14px;
  line-height: 0;
}

.of__btn-t {
  line-height: 1;
}

.of.is-demo .of__arrow,
.of.is-trying .of__arrow {
  animation: of-turn 2s linear infinite;
}

@keyframes of-turn {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
.of.is-demo .of__icon {
  animation: of-dim 2s ease-in-out infinite;
}

@keyframes of-dim {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.46;
    transform: scale(0.94);
  }
}
@media (prefers-reduced-motion: reduce) {
  .of.is-demo .of__arrow,
  .of.is-trying .of__arrow,
  .of.is-demo .of__icon {
    animation: none !important;
  }
}

// 실제 동작: 다시 시도를 누르면 확인 중으로 바뀌고, 시도 횟수를 세어 다시 오프라인 상태로 돌아온다.
var card = document.querySelector('.of');
var btn = document.getElementById('of-b');
var sub = document.getElementById('of-s');
var tries = 0;
btn.addEventListener('click', function () {
  card.classList.remove('is-demo');
  if (btn.disabled) return;
  btn.disabled = true;
  card.classList.add('is-trying');
  sub.textContent = sub.dataset.busy;
  window.setTimeout(function () {
    tries += 1;
    card.classList.remove('is-trying');
    sub.textContent = sub.dataset.again.replace('{n}', tries);
    btn.disabled = false;
  }, 900);
});

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

export type OfflineCardProps = {
  title?: string;
  idle?: string;
  busy?: string;
  again?: string;
  action?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function OfflineCard({
  title = "You are offline",
  idle = "Could not load the list",
  busy = "Checking the connection",
  again = "Still offline · {n} tries",
  action = "Try again",
  duration = 2000,
  easing = "linear",
  color = "#0a4fe8",
}: OfflineCardProps) {
  const [sub, setSub] = useState(idle);
  const [trying, setTrying] = useState(false);
  const [loop, setLoop] = useState(true);
  const [tries, setTries] = useState(0);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  function retry() {
    if (trying) return;
    setLoop(false);
    setTrying(true);
    setSub(busy);
    window.setTimeout(() => {
      const n = tries + 1;
      setTries(n);
      setTrying(false);
      setSub(again.replace("{n}", String(n)));
    }, 900);
  }

  const cls = [styles.of, loop ? styles.isDemo : "", trying ? styles.isTrying : ""].join(" ");

  return (
    <section className={cls} style={vars}>
      <span className={styles.icon} aria-hidden="true">
        <svg viewBox="0 0 256 256" width="1em" height="1em">
          <g fill="currentColor">
            <path d="m238.2 87.69l-104 125.43a8 8 0 0 1-12.3 0L17.8 87.69a7.79 7.79 0 0 1 1.31-11.21a180.75 180.75 0 0 1 217.78 0a7.79 7.79 0 0 1 1.31 11.21" opacity=".2" />
            <path d="M53.92 34.62a8 8 0 1 0-11.84 10.76l4.55 5A188 188 0 0 0 14.28 70.1a15.93 15.93 0 0 0-6.17 10.81a15.65 15.65 0 0 0 3.54 11.89l104 125.43A15.93 15.93 0 0 0 128 224a15.93 15.93 0 0 0 12.31-5.77l28.1-33.88l33.67 37a8 8 0 1 0 11.84-10.76ZM128 208L24.09 82.74a171.5 171.5 0 0 1 33.82-19.95l99.63 109.6ZM244.35 92.8l-49.42 59.58a8 8 0 0 1-12.32-10.21l49.3-59.43A170.76 170.76 0 0 0 128 48a175 175 0 0 0-32.39 3a8 8 0 1 1-3-15.72A190.6 190.6 0 0 1 128 32a186.67 186.67 0 0 1 113.72 38.1a15.93 15.93 0 0 1 6.17 10.81a15.65 15.65 0 0 1-3.54 11.89" />
          </g>
        </svg>
      </span>
      <h2 className={styles.title}>{title}</h2>
      <p className={styles.sub} aria-live="polite">{sub}</p>
      <button className={styles.btn} type="button" onClick={retry} disabled={trying}>
        <span className={styles.arrow} aria-hidden="true">
          <svg viewBox="0 0 256 256" width="1em" height="1em">
            <g fill="currentColor">
              <path d="M216 128a88 88 0 1 1-88-88a88 88 0 0 1 88 88" opacity=".2" />
              <path d="M224 48v48a8 8 0 0 1-8 8h-48a8 8 0 0 1 0-16h28.69l-14.63-14.63a79.56 79.56 0 0 0-56.13-23.43h-.45a79.52 79.52 0 0 0-55.89 22.77a8 8 0 0 1-11.18-11.44a96 96 0 0 1 135 .79L208 76.69V48a8 8 0 0 1 16 0m-37.59 135.29a80 80 0 0 1-112.47-.66L59.31 168H88a8 8 0 0 0 0-16H40a8 8 0 0 0-8 8v48a8 8 0 0 0 16 0v-28.69l14.63 14.63A95.43 95.43 0 0 0 130 222.06h.53a95.36 95.36 0 0 0 67.07-27.33a8 8 0 0 0-11.18-11.44Z" />
            </g>
          </svg>
        </span>
        <span className={styles.btnT}>{action}</span>
      </button>
    </section>
  );
}