08Session timeout warning banner

<main class="stage">
  <div class="timeout-wrap">
    <div class="timeout-wrap__page">
      <span class="timeout-wrap__line"></span>
      <span class="timeout-wrap__line timeout-wrap__line--short"></span>
      <span class="timeout-wrap__line"></span>
    </div>
    <div class="timeout-banner is-demo" role="alert">
      <span class="timeout-banner__icon" aria-hidden="true">
        <svg viewBox="0 0 256 256"><g fill="currentColor"><path d="M208 192H48a8 8 0 0 1-6.88-12C47.71 168.6 56 139.81 56 104a72 72 0 0 1 144 0c0 35.82 8.3 64.6 14.9 76a8 8 0 0 1-6.9 12" opacity=".2"/><path d="M221.8 175.94c-5.55-9.56-13.8-36.61-13.8-71.94a80 80 0 1 0-160 0c0 35.34-8.26 62.38-13.81 71.94A16 16 0 0 0 48 200h40.81a40 40 0 0 0 78.38 0H208a16 16 0 0 0 13.8-24.06M128 216a24 24 0 0 1-22.62-16h45.24A24 24 0 0 1 128 216m-80-32c7.7-13.24 16-43.92 16-80a64 64 0 1 1 128 0c0 36.05 8.28 66.73 16 80Z"/></g></svg>
      </span>
      <p class="timeout-banner__text">Your session ends in <span class="timeout-banner__count">30</span>s</p>
      <button class="timeout-banner__extend" type="button">Extend</button>
    </div>
  </div>
</main>

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

$duration: $dur-loop;                                  // 배너가 내려왔다 올라가는 한 바퀴
$easing: $ease-spring;
$color: $subject-blue;                                 // 신뢰감 있는 차분한 강조 색

@include stage($stage-yellow);

.timeout-wrap {
  position: relative;
  width: min(280px, 90vw);
  height: 132px;
  border-radius: $r-card;
  overflow: hidden;
  box-shadow: $shadow-raised;
}
.timeout-wrap__page {
  position: absolute;
  inset: 0;
  padding: $sp-4;
  padding-top: $sp-12;
  background: $stage-paper;
  display: flex;
  flex-direction: column;
  gap: $sp-3;
}
.timeout-wrap__line { display: block; height: 8px; border-radius: $r-xs; background: #e6e2d8; }
.timeout-wrap__line--short { width: 55%; }

.timeout-banner {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  gap: $sp-3;
  padding: $sp-3 $sp-4;
  background: $stage-paper;
  border-bottom: 1.5px solid #e6e2d8;
  border-radius: 0 0 $r-card $r-card;
  box-shadow: $shadow-raised;
  transform: translateY(-100%);
}
.timeout-banner__icon { width: 22px; height: 22px; flex: 0 0 auto; color: $color; }
.timeout-banner__text { flex: 1 1 auto; margin: 0; font-size: 12px; font-weight: 600; color: $stage-ink; font-family: inherit; }
.timeout-banner__count { color: $color; font-weight: 700; }
.timeout-banner__extend {
  flex: 0 0 auto;
  padding: $sp-1 $sp-3;
  border: none;
  border-radius: $r-pill;
  background: $color;
  color: $stage-paper;
  font-size: 11px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
}
.timeout-banner__extend:hover, .timeout-banner__extend:focus-visible { background: darken($color, 10%); }

// 자동 재생 — 배너가 내려와 머물다 다시 올라간다 (텍스트 숫자는 실제 JS 타이머, 이 애니메이션과 무관)
.timeout-banner.is-demo { animation: banner-cycle $duration $easing infinite; }

@keyframes banner-cycle {
  0%, 8%    { transform: translateY(-100%); }
  23%, 77%  { transform: translateY(0); }
  92%, 100% { transform: translateY(-100%); }
}

@media (prefers-reduced-motion: reduce) {
  .timeout-banner.is-demo { animation: none; transform: translateY(0); }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.timeout-wrap {
  position: relative;
  width: min(280px, 90vw);
  height: 132px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.timeout-wrap__page {
  position: absolute;
  inset: 0;
  padding: 16px;
  padding-top: 48px;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.timeout-wrap__line {
  display: block;
  height: 8px;
  border-radius: 4px;
  background: #e6e2d8;
}

.timeout-wrap__line--short {
  width: 55%;
}

.timeout-banner {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #ffffff;
  border-bottom: 1.5px solid #e6e2d8;
  border-radius: 0 0 16px 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  transform: translateY(-100%);
}

.timeout-banner__icon {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  color: #2f6df6;
}

.timeout-banner__text {
  flex: 1 1 auto;
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  color: #17141a;
  font-family: inherit;
}

.timeout-banner__count {
  color: #2f6df6;
  font-weight: 700;
}

.timeout-banner__extend {
  flex: 0 0 auto;
  padding: 4px 12px;
  border: none;
  border-radius: 999px;
  background: #2f6df6;
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
}

.timeout-banner__extend:hover, .timeout-banner__extend:focus-visible {
  background: rgb(3.9360260233%, 31.0508719617%, 90.965934761%);
}

.timeout-banner.is-demo {
  animation: banner-cycle 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes banner-cycle {
  0%, 8% {
    transform: translateY(-100%);
  }
  23%, 77% {
    transform: translateY(0);
  }
  92%, 100% {
    transform: translateY(-100%);
  }
}
@media (prefers-reduced-motion: reduce) {
  .timeout-banner.is-demo {
    animation: none;
    transform: translateY(0);
  }
}

(function(){
  var cnt = document.querySelector('.timeout-banner__count'),
      btn = document.querySelector('.timeout-banner__extend'),
      n = 30,
      timer = setInterval(function(){
        n--; if (n < 0) n = 0; cnt.textContent = n;
      }, 1000);
  btn.addEventListener('click', function(){
    n = 30; cnt.textContent = n;
  });
}());

import { useEffect, useState } from "react";
import styles from "./SessionTimeoutBanner.module.scss";

export type SessionTimeoutBannerProps = {
  /** 세션 만료까지 남은 초 (기본 30) */
  seconds?: number;
  onExtend?: () => void;
};

/** 마운트·연장마다 seconds 초를 세고, 0 이 되기 전에 Extend 를 누르면 다시 처음부터 센다 */
export default function SessionTimeoutBanner({ seconds = 30, onExtend }: SessionTimeoutBannerProps) {
  const [left, setLeft] = useState(seconds);
  useEffect(() => {
    if (left <= 0) return;
    const id = setInterval(() => setLeft((n) => Math.max(0, n - 1)), 1000);
    return () => clearInterval(id);
  }, [left]);
  const extend = () => {
    setLeft(seconds);
    onExtend?.();
  };
  return (
    <div className={styles.banner} role="alert">
      <span className={styles.icon} aria-hidden="true">
        <svg viewBox="0 0 256 256">
          <g fill="currentColor"><path d="M208 192H48a8 8 0 0 1-6.88-12C47.71 168.6 56 139.81 56 104a72 72 0 0 1 144 0c0 35.82 8.3 64.6 14.9 76a8 8 0 0 1-6.9 12" opacity=".2" /><path d="M221.8 175.94c-5.55-9.56-13.8-36.61-13.8-71.94a80 80 0 1 0-160 0c0 35.34-8.26 62.38-13.81 71.94A16 16 0 0 0 48 200h40.81a40 40 0 0 0 78.38 0H208a16 16 0 0 0 13.8-24.06M128 216a24 24 0 0 1-22.62-16h45.24A24 24 0 0 1 128 216m-80-32c7.7-13.24 16-43.92 16-80a64 64 0 1 1 128 0c0 36.05 8.28 66.73 16 80Z" /></g>
        </svg>
      </span>
      <p className={styles.text}>Your session ends in <span className={styles.count}>{left}</span>s</p>
      <button className={styles.extend} type="button" onClick={extend}>Extend</button>
    </div>
  );
}