02Toast Popover API

<main class="stage">
  <div class="demo">
    <button class="opener" type="button" popovertarget="ptoast048">Xem lại thông báo</button>
    <div id="ptoast048" class="toast is-demo" popover role="status" aria-live="polite">
      <span class="toast__dot" aria-hidden="true"></span>
      <div class="toast__body">
        <p class="toast__title">Đã kết nối</p>
        <p class="toast__text">Mạng đã khôi phục</p>
      </div>
      <button class="toast__close" type="button" popovertarget="ptoast048" popovertargetaction="hide" aria-label="Đóng thông báo">
        <svg viewBox="0 0 24 24" width="14" height="14" aria-hidden="true">
          <line x1="5" y1="5" x2="19" y2="19" stroke="currentColor" stroke-width="2.4" stroke-linecap="round"/>
          <line x1="19" y1="5" x2="5" y2="19" stroke="currentColor" stroke-width="2.4" stroke-linecap="round"/>
        </svg>
      </button>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────
$duration: $dur-base;    // 300ms — 열리고 닫히는 속도
$easing: $ease-out;
$color: $subject-blue;   // 상태 점 색

// ── 데모 무대 ───────────────────────────────
@include stage($stage-yellow);

.demo { display: grid; justify-items: center; gap: $sp-4; }

.opener {
  border: 0; background: transparent;
  color: $subject-ink; font-weight: 600; font-size: 13px; line-height: 1; font-family: inherit;
  text-decoration: underline; text-underline-offset: $sp-1;
  padding: $sp-2 $sp-1; cursor: pointer;
}

// popover 기본 스타일(테두리·배경·중앙 고정)을 지우고 화면 오른쪽 위 코너로
.toast[popover] {
  position: fixed;
  inset: unset;
  top: $sp-4;
  right: $sp-4;
  margin: 0;
  border: 0;
  overflow: visible;

  display: flex; align-items: flex-start; gap: $sp-3;
  width: min(260px, 78vw);
  padding: $sp-4 $sp-10 $sp-4 $sp-4;
  border-radius: $r-card;
  background: $subject-ink;
  color: $subject-cream;
  box-shadow: $shadow-raised;
}
.toast__dot {
  align-self: center;
  width: $sp-3; height: $sp-3;
  border-radius: 50%;
  background: $color;
  flex: none;
}
.toast__title { margin: 0 0 $sp-1; font-weight: 700; font-size: 14px; line-height: 1.3; font-family: inherit; }
.toast__text { margin: 0; font-weight: 400; font-size: 13px; line-height: 1.4; font-family: inherit; opacity: .78; }
.toast__close {
  position: absolute; top: $sp-2; right: $sp-2;
  display: grid; place-items: center;
  width: $sp-6; height: $sp-6;
  border: 0; border-radius: $r-xs;
  background: transparent; color: $subject-cream; opacity: .6;
  cursor: pointer;
  &:hover, &:focus-visible { opacity: 1; }
}

// 실측 2026-09-10: showPopover() 로 이미 열린 상태에서 등장→유지→살짝 접히는 루프를 계속 반복해
// "3초 뒤 자동으로 닫힌다"는 실제 동작을 무한 루프로 대신 보여준다 (전역 루프 2s)
.toast.is-demo { animation: pop-loop $dur-loop $easing infinite; }

@keyframes pop-loop {
  0%   { transform: translateY(-14px) scale(.92); opacity: 0; }
  16%  { transform: translateY(0) scale(1); opacity: 1; }
  72%  { transform: translateY(0) scale(1); opacity: 1; }
  92%  { transform: translateY(-6px) scale(.97); opacity: 0; }
  100% { transform: translateY(-14px) scale(.92); opacity: 0; }
}

// ── 접근성: 움직임 줄이기 설정이면 뜬 채로 고정 ────────
@media (prefers-reduced-motion: reduce) {
  .toast.is-demo { animation: none; transform: none; opacity: 1; }
}

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);
}

.demo {
  display: grid;
  justify-items: center;
  gap: 16px;
}

.opener {
  border: 0;
  background: transparent;
  color: #17141a;
  font-weight: 600;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
  text-decoration: underline;
  text-underline-offset: 4px;
  padding: 8px 4px;
  cursor: pointer;
}

.toast[popover] {
  position: fixed;
  inset: unset;
  top: 16px;
  right: 16px;
  margin: 0;
  border: 0;
  overflow: visible;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: min(260px, 78vw);
  padding: 16px 40px 16px 16px;
  border-radius: 16px;
  background: #17141a;
  color: #fff7e6;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.toast__dot {
  align-self: center;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2f6df6;
  flex: none;
}

.toast__title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 14px;
  line-height: 1.3;
  font-family: inherit;
}

.toast__text {
  margin: 0;
  font-weight: 400;
  font-size: 13px;
  line-height: 1.4;
  font-family: inherit;
  opacity: 0.78;
}

.toast__close {
  position: absolute;
  top: 8px;
  right: 8px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: #fff7e6;
  opacity: 0.6;
  cursor: pointer;
}
.toast__close:hover, .toast__close:focus-visible {
  opacity: 1;
}

.toast.is-demo {
  animation: pop-loop 2s ease-out infinite;
}

@keyframes pop-loop {
  0% {
    transform: translateY(-14px) scale(0.92);
    opacity: 0;
  }
  16% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
  72% {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
  92% {
    transform: translateY(-6px) scale(0.97);
    opacity: 0;
  }
  100% {
    transform: translateY(-14px) scale(0.92);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .toast.is-demo {
    animation: none;
    transform: none;
    opacity: 1;
  }
}

// popover 속성이 top-layer 스택·ESC 닫기·바깥 클릭 닫기를 공짜로 준다. 데모용으로 로드 즉시 한 번 연다.
document.getElementById('ptoast048').showPopover();

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

export type PopoverToastProps = {
  title: string;
  message: string;
  /** true 면 showPopover(), false 면 hidePopover() (기본 true) */
  open?: boolean;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function PopoverToast({
  title,
  message,
  open = true,
  duration = 300,
  easing = "ease-out",
  color = "#2f6df6",
}: PopoverToastProps) {
  const ref = useRef<HTMLDivElement | null>(null);

  useEffect(() => {
    const el = ref.current as (HTMLDivElement & { showPopover?: () => void; hidePopover?: () => void }) | null;
    if (!el) return;
    if (open) el.showPopover?.();
    else el.hidePopover?.();
  }, [open]);

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

  return (
    <div ref={ref} popover="" className={styles.toast} style={vars} role="status" aria-live="polite">
      <span className={styles.dot} aria-hidden="true" />
      <div className={styles.body}>
        <p className={styles.title}>{title}</p>
        <p className={styles.text}>{message}</p>
      </div>
    </div>
  );
}