01右からスライドイン

<main class="stage">
  <div class="toast is-demo" role="status" aria-live="polite">
    <span class="toast__bar" aria-hidden="true"></span>
    <div class="toast__body">
      <p class="toast__title">保存しました</p>
      <p class="toast__text">新しい項目を保存しました</p>
    </div>
    <button class="toast__close" type="button" aria-label="通知を閉じる">
      <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>
</main>

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

// ── 변수 3개 ──────────────────────────────
$duration: $dur-enter;      // 600ms — 오른쪽에서 미끄러져 들어오는 시간
$easing: $ease-spring;
$color: $subject-blue;      // 왼쪽 강조 막대 색

// ── 데모 무대 ───────────────────────────────
@include stage($stage-ink);
// 실측 2026-09-10: 토스트가 오른쪽 밖(translateX 140%)에서 들어온다 — html/body 의 overflow:hidden 은
// 뷰포트로 전파돼 scrollWidth 를 못 줄인다(320px 넘침 재측정 실측). .stage 자체를 클리핑 컨테이너로 만든다.
.stage { overflow: hidden; }

.toast {
  position: relative;
  box-sizing: border-box;
  display: flex; align-items: flex-start; gap: $sp-3;
  width: min(280px, 86vw);
  padding: $sp-4 $sp-10 $sp-4 $sp-4;
  border-radius: $r-card;
  background: $subject-cream;
  box-shadow: $shadow-raised;
  transform: translateX(140%);
  opacity: 0;
}
.toast__bar {
  align-self: stretch;
  width: $sp-1;
  border-radius: $r-xs;
  background: $color;
  flex: none;
}
.toast__title { margin: 0 0 $sp-1; font-weight: 700; font-size: 15px; line-height: 1.3; font-family: inherit; color: $subject-ink; }
.toast__text { margin: 0; font-weight: 400; font-size: 13px; line-height: 1.4; font-family: inherit; color: $subject-ink; 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-ink; opacity: .55;
  cursor: pointer;
  &:hover, &:focus-visible { opacity: 1; }
}

// 실측 2026-09-10: 오른쪽 밖에서 들어와 머물다 다시 나간다. 한 바퀴 = 전역 루프(2s)
.toast.is-demo { animation: slide-loop $dur-loop $easing infinite; }

@keyframes slide-loop {
  0%   { transform: translateX(140%); opacity: 0; }
  18%  { transform: translateX(0); opacity: 1; }
  78%  { transform: translateX(0); opacity: 1; }
  100% { transform: translateX(140%); opacity: 0; }
}

// ── 접근성: 움직임 줄이기 설정이면 자리만, 슬라이드는 생략 ────────
@media (prefers-reduced-motion: reduce) {
  .toast.is-demo { animation: none; transform: translateX(0); opacity: 1; }
}

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 {
  overflow: hidden;
}

.toast {
  position: relative;
  box-sizing: border-box;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: min(280px, 86vw);
  padding: 16px 40px 16px 16px;
  border-radius: 16px;
  background: #fff7e6;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  transform: translateX(140%);
  opacity: 0;
}

.toast__bar {
  align-self: stretch;
  width: 4px;
  border-radius: 4px;
  background: #2f6df6;
  flex: none;
}

.toast__title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.3;
  font-family: inherit;
  color: #17141a;
}

.toast__text {
  margin: 0;
  font-weight: 400;
  font-size: 13px;
  line-height: 1.4;
  font-family: inherit;
  color: #17141a;
  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: #17141a;
  opacity: 0.55;
  cursor: pointer;
}
.toast__close:hover, .toast__close:focus-visible {
  opacity: 1;
}

.toast.is-demo {
  animation: slide-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes slide-loop {
  0% {
    transform: translateX(140%);
    opacity: 0;
  }
  18% {
    transform: translateX(0);
    opacity: 1;
  }
  78% {
    transform: translateX(0);
    opacity: 1;
  }
  100% {
    transform: translateX(140%);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .toast.is-demo {
    animation: none;
    transform: translateX(0);
    opacity: 1;
  }
}

import type { CSSProperties, ReactNode } from "react";
import styles from "./ToastSlideIn.module.scss";

export type ToastSlideInProps = {
  visible: boolean;
  title: string;
  children: ReactNode;
  onClose?: () => void;
  /** 오른쪽에서 미끄러져 들어오는 시간 (기본 600ms) */
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function ToastSlideIn({
  visible,
  title,
  children,
  onClose,
  duration = 600,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#2f6df6",
}: ToastSlideInProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={`${styles.toast} ${visible ? styles.isVisible : ""}`} style={vars} role="status" aria-live="polite">
      <span className={styles.bar} aria-hidden="true" />
      <div className={styles.body}>
        <p className={styles.title}>{title}</p>
        <p className={styles.text}>{children}</p>
      </div>
      <button className={styles.close} type="button" aria-label="알림 닫기" onClick={onClose}>
        <svg viewBox="0 0 24 24" width={14} height={14} aria-hidden="true">
          <line x1={5} y1={5} x2={19} y2={19} stroke="currentColor" strokeWidth={2.4} strokeLinecap="round" />
          <line x1={19} y1={5} x2={5} y2={19} stroke="currentColor" strokeWidth={2.4} strokeLinecap="round" />
        </svg>
      </button>
    </div>
  );
}