08Session-expired re-login modal

<main class="stage">
  <div class="modal-scene is-demo">
    <div class="modal-scene__page">
      <span class="modal-scene__line"></span>
      <span class="modal-scene__line modal-scene__line--short"></span>
      <span class="modal-scene__line"></span>
    </div>
    <div class="modal-scene__backdrop"></div>
    <div class="modal-scene__modal" role="alertdialog" aria-label="Session expired">
      <h2 class="modal-scene__title">Session expired</h2>
      <p class="modal-scene__desc">Please sign in again to continue.</p>
      <button class="modal-scene__btn" type="button">Log in again</button>
    </div>
  </div>
</main>

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

$duration: $dur-enter;                                 // 모달 등장 시간
$easing: $ease-pop;
$color: $error;                                        // 경고 색

@include stage($stage-paper);

.modal-scene {
  position: relative;
  width: min(230px, 82vw);
  height: 168px;
  border-radius: $r-card;
  overflow: hidden;
  box-shadow: $shadow-raised;
}
.modal-scene__page {
  position: absolute;
  inset: 0;
  padding: $sp-4;
  background: $stage-paper;
  display: flex;
  flex-direction: column;
  gap: $sp-3;
}
.modal-scene__line { display: block; height: 8px; border-radius: $r-xs; background: #e6e2d8; }
.modal-scene__line--short { width: 60%; }
.modal-scene__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 20, 26, 0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: background $duration $easing, backdrop-filter $duration $easing;
  pointer-events: none;
}
.modal-scene__modal {
  position: absolute;
  left: 50%; top: 50%;
  width: min(170px, 74%);
  padding: $sp-3;
  background: $stage-paper;
  border-radius: $r-card;
  box-shadow: $shadow-raised;
  text-align: center;
  transform: translate(-50%, -50%) scale(.7);
  opacity: 0;
  transition: transform $duration $easing, opacity $duration $easing;
}
.modal-scene__title { margin: 0 0 $sp-1; font-size: 14px; font-weight: 700; color: $color; font-family: inherit; }
.modal-scene__desc { margin: 0 0 $sp-3; font-size: 11px; color: #6b6455; font-family: inherit; }
.modal-scene__btn {
  padding: $sp-2 $sp-4;
  border: none;
  border-radius: $r-sm;
  background: $stage-ink;
  color: $stage-paper;
  font-weight: 700;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}
.modal-scene__btn:hover, .modal-scene__btn:focus-visible { background: lighten($stage-ink, 12%); }

.modal-scene.is-demo .modal-scene__backdrop { animation: backdrop-cycle $dur-loop $easing infinite; }
.modal-scene.is-demo .modal-scene__modal { animation: modal-cycle $dur-loop $easing infinite; }

@keyframes backdrop-cycle {
  0%, 8%    { background: rgba(23, 20, 26, 0); backdrop-filter: blur(0px); }
  23%, 77%  { background: rgba(23, 20, 26, .45); backdrop-filter: blur(3px); }
  92%, 100% { background: rgba(23, 20, 26, 0); backdrop-filter: blur(0px); }
}
@keyframes modal-cycle {
  0%, 8%    { transform: translate(-50%, -50%) scale(.7); opacity: 0; }
  23%, 77%  { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  92%, 100% { transform: translate(-50%, -50%) scale(.7); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .modal-scene__backdrop, .modal-scene__modal { transition: none; }
  .modal-scene.is-demo .modal-scene__backdrop,
  .modal-scene.is-demo .modal-scene__modal { animation: 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);
}

.modal-scene {
  position: relative;
  width: min(230px, 82vw);
  height: 168px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.modal-scene__page {
  position: absolute;
  inset: 0;
  padding: 16px;
  background: #ffffff;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.modal-scene__line--short {
  width: 60%;
}

.modal-scene__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(23, 20, 26, 0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: background 600ms cubic-bezier(0.2, 1.4, 0.4, 1), backdrop-filter 600ms cubic-bezier(0.2, 1.4, 0.4, 1);
  pointer-events: none;
}

.modal-scene__modal {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(170px, 74%);
  padding: 12px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  text-align: center;
  transform: translate(-50%, -50%) scale(0.7);
  opacity: 0;
  transition: transform 600ms cubic-bezier(0.2, 1.4, 0.4, 1), opacity 600ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.modal-scene__title {
  margin: 0 0 4px;
  font-size: 14px;
  font-weight: 700;
  color: #c2361a;
  font-family: inherit;
}

.modal-scene__desc {
  margin: 0 0 12px;
  font-size: 11px;
  color: #6b6455;
  font-family: inherit;
}

.modal-scene__btn {
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  background: #17141a;
  color: #ffffff;
  font-weight: 700;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}

.modal-scene__btn:hover, .modal-scene__btn:focus-visible {
  background: rgb(21.0196078431%, 18.2779198636%, 23.7612958227%);
}

.modal-scene.is-demo .modal-scene__backdrop {
  animation: backdrop-cycle 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.modal-scene.is-demo .modal-scene__modal {
  animation: modal-cycle 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes backdrop-cycle {
  0%, 8% {
    background: rgba(23, 20, 26, 0);
    backdrop-filter: blur(0px);
  }
  23%, 77% {
    background: rgba(23, 20, 26, 0.45);
    backdrop-filter: blur(3px);
  }
  92%, 100% {
    background: rgba(23, 20, 26, 0);
    backdrop-filter: blur(0px);
  }
}
@keyframes modal-cycle {
  0%, 8% {
    transform: translate(-50%, -50%) scale(0.7);
    opacity: 0;
  }
  23%, 77% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  92%, 100% {
    transform: translate(-50%, -50%) scale(0.7);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .modal-scene__backdrop, .modal-scene__modal {
    transition: none;
  }
  .modal-scene.is-demo .modal-scene__backdrop,
  .modal-scene.is-demo .modal-scene__modal {
    animation: none;
  }
}

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

export type SessionExpiredModalProps = {
  open: boolean;
  onReLogin?: () => void;
  /** 모달 등장 시간 (기본 600ms) */
  duration?: number;
  easing?: string;
};

/** open 이 바뀔 때마다 backdrop 과 모달이 함께 페이드+스케일 전환된다 */
export default function SessionExpiredModal({
  open,
  onReLogin,
  duration = 600,
  easing = "cubic-bezier(.2,1.4,.4,1)",
}: SessionExpiredModalProps) {
  const style = { "--duration": `${duration}ms`, "--easing": easing } as CSSProperties;
  return (
    <div className={styles.scene} style={style}>
      <div className={styles.page}>
        <span className={styles.line} />
        <span className={`${styles.line} ${styles.short}`} />
        <span className={styles.line} />
      </div>
      <div className={`${styles.backdrop} ${open ? styles.show : ""}`} />
      <div className={`${styles.modal} ${open ? styles.show : ""}`} role="alertdialog" aria-label="Session expired" aria-hidden={!open}>
        <h2 className={styles.title}>Session expired</h2>
        <p className={styles.desc}>Please sign in again to continue.</p>
        <button className={styles.btn} type="button" onClick={onReLogin}>Log in again</button>
      </div>
    </div>
  );
}