05ネイティブ dialog

<main class="stage">
  <button class="trigger" type="button">もう一度開く</button>
  <div class="overlay is-demo"></div>
  <dialog class="modal is-demo" open aria-labelledby="t5">
    <h2 id="t5">変更を保存しますか？</h2>
    <p>dialog は開閉時に自動でフォーカスを閉じ込めます。</p>
    <button class="modal__close" type="button">閉じる</button>
  </dialog>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;      // 대화상자가 뜨는 시간
$easing: $ease-out;
$color: $subject-cream;    // 강조색(버튼)

@include stage($stage-ink);

.stage { position: relative; }

.trigger {
  border: 0; border-radius: $r-pill;
  padding: clamp(10px, 3.4vmin, 14px) clamp(20px, 7vmin, 30px);
  font-weight: 600;
  font-size: clamp(13px, 4vmin, 16px);
  line-height: 1;
  font-family: inherit;
  color: $stage-ink; background: $color;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}

.overlay {
  position: fixed; inset: 0;
  background: rgba($stage-ink, .55);
  opacity: 0; pointer-events: none;
}

// 진짜 showModal() 로 열렸을 때만 브라우저가 만드는 배경 — 우리 overlay 와 겹치지 않게 투명하게 둔다
dialog.modal::backdrop { background: transparent; }

dialog.modal {
  border: 0; margin: auto;
  position: fixed; inset: 0;
  width: min(78vw, 300px); height: fit-content;
  padding: clamp(12px, 4.5vmin, 22px);
  border-radius: $r-card; background: $stage-paper; color: $stage-ink;
  box-shadow: $shadow-raised;
  opacity: 0; transform: scale(.92) translateY(10px);

  h2 { margin: 0 0 6px; font-size: clamp(13px, 4.4vmin, 18px); }
  p  { margin: 0 0 14px; font-size: clamp(10px, 3.2vmin, 13px); color: rgba($stage-ink, .65); }

  // 실제 open 전환: display·overlay 가 discrete 라 @starting-style 없이는 즉시 나타난다
  transition: opacity $duration $easing, transform $duration $easing,
              overlay $duration allow-discrete, display $duration allow-discrete;
  &[open] { opacity: 1; transform: none; }
  @starting-style { &[open] { opacity: 0; transform: scale(.92) translateY(10px); } }
}

.modal__close {
  border: 0; border-radius: $r-control; background: $subject-blue; color: $stage-paper;
  padding: clamp(7px, 2.6vmin, 9px) clamp(14px, 4.6vmin, 18px);
  font-weight: 600;
  font-size: clamp(11px, 3.4vmin, 13px);
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
}

// 데모: open 속성은 그대로 두고 keyframes 로만 접었다 편다
.overlay.is-demo { animation: overlay-loop $dur-loop ease-in-out infinite; }
dialog.modal.is-demo { animation: dialog-loop $dur-loop $easing infinite; }

@keyframes overlay-loop {
  0%   { opacity: 0; }
  15%  { opacity: 1; }
  70%  { opacity: 1; }
  85%  { opacity: 0; }
  100% { opacity: 0; }
}
@keyframes dialog-loop {
  0%   { opacity: 0; transform: scale(.92) translateY(10px); }
  15%  { opacity: 1; transform: scale(1) translateY(0); }
  70%  { opacity: 1; transform: scale(1) translateY(0); }
  85%  { opacity: 0; transform: scale(.92) translateY(10px); }
  100% { opacity: 0; transform: scale(.92) translateY(10px); }
}

@media (prefers-reduced-motion: reduce) {
  .overlay.is-demo, dialog.modal.is-demo { animation: none; }
  dialog.modal { transition-duration: 1ms; }
}

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);
}

.stage {
  position: relative;
}

.trigger {
  border: 0;
  border-radius: 999px;
  padding: clamp(10px, 3.4vmin, 14px) clamp(20px, 7vmin, 30px);
  font-weight: 600;
  font-size: clamp(13px, 4vmin, 16px);
  line-height: 1;
  font-family: inherit;
  color: #17141a;
  background: #fff7e6;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(23, 20, 26, 0.55);
  opacity: 0;
  pointer-events: none;
}

dialog.modal::backdrop {
  background: transparent;
}

dialog.modal {
  border: 0;
  margin: auto;
  position: fixed;
  inset: 0;
  width: min(78vw, 300px);
  height: fit-content;
  padding: clamp(12px, 4.5vmin, 22px);
  border-radius: 16px;
  background: #ffffff;
  color: #17141a;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  opacity: 0;
  transform: scale(0.92) translateY(10px);
}
dialog.modal h2 {
  margin: 0 0 6px;
  font-size: clamp(13px, 4.4vmin, 18px);
}
dialog.modal p {
  margin: 0 0 14px;
  font-size: clamp(10px, 3.2vmin, 13px);
  color: rgba(23, 20, 26, 0.65);
}
dialog.modal {
  transition: opacity 300ms ease-out, transform 300ms ease-out, overlay 300ms allow-discrete, display 300ms allow-discrete;
}
dialog.modal[open] {
  opacity: 1;
  transform: none;
}
@starting-style {
  dialog.modal[open] {
    opacity: 0;
    transform: scale(0.92) translateY(10px);
  }
}

.modal__close {
  border: 0;
  border-radius: 12px;
  background: #2f6df6;
  color: #ffffff;
  padding: clamp(7px, 2.6vmin, 9px) clamp(14px, 4.6vmin, 18px);
  font-weight: 600;
  font-size: clamp(11px, 3.4vmin, 13px);
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
}

.overlay.is-demo {
  animation: overlay-loop 2s ease-in-out infinite;
}

dialog.modal.is-demo {
  animation: dialog-loop 2s ease-out infinite;
}

@keyframes overlay-loop {
  0% {
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  70% {
    opacity: 1;
  }
  85% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes dialog-loop {
  0% {
    opacity: 0;
    transform: scale(0.92) translateY(10px);
  }
  15% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  70% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  85% {
    opacity: 0;
    transform: scale(0.92) translateY(10px);
  }
  100% {
    opacity: 0;
    transform: scale(0.92) translateY(10px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .overlay.is-demo, dialog.modal.is-demo {
    animation: none;
  }
  dialog.modal {
    transition-duration: 1ms;
  }
}

// 데모는 open 속성이 그대로 켜진 <dialog> 를 keyframes 로 접었다 편다.
// 실제 클릭은 진짜 close()/showModal() 을 불러 top layer·::backdrop·포커스 트랩까지 켠다.
(function () {
  var stage = document.querySelector('.stage');
  var overlay = document.querySelector('.overlay');
  var dialog = document.querySelector('.modal');
  var trigger = document.querySelector('.trigger');
  var close = document.querySelector('.modal__close');
  function stopDemo() { stage.classList.add('is-real'); overlay.classList.remove('is-demo'); dialog.classList.remove('is-demo'); }
  close.addEventListener('click', function () { stopDemo(); dialog.close(); });
  trigger.addEventListener('click', function () { stopDemo(); dialog.showModal(); });
  dialog.addEventListener('cancel', function () { stopDemo(); });
})();

import { useEffect, useRef, useState } from "react";
import type { CSSProperties } from "react";
import styles from "./NativeDialog.module.scss";

export type NativeDialogProps = {
  triggerLabel: string;
  title: string;
  description: string;
  closeLabel: string;
  /** 대화상자가 뜨는 시간 (기본 300ms) */
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function NativeDialog({
  triggerLabel,
  title,
  description,
  closeLabel,
  duration = 300,
  easing = "ease-out",
  color = "#fff7e6",
}: NativeDialogProps) {
  const ref = useRef<HTMLDialogElement>(null);
  const [open, setOpen] = useState(false);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  useEffect(() => {
    const el = ref.current;
    if (!el) return;
    if (open && !el.open) el.showModal();
    if (!open && el.open) el.close();
  }, [open]);

  return (
    <div className={styles.stage} style={vars}>
      <button type="button" className={styles.trigger} onClick={() => setOpen(true)}>
        {triggerLabel}
      </button>
      <dialog
        ref={ref}
        className={styles.modal}
        onCancel={() => setOpen(false)}
        onClose={() => setOpen(false)}
      >
        <h2>{title}</h2>
        <p>{description}</p>
        <button type="button" className={styles.close} onClick={() => setOpen(false)}>
          {closeLabel}
        </button>
      </dialog>
    </div>
  );
}