02Tiện ích entrance tw-animate-css

<main class="stage">
  <div class="card is-demo">
    <p class="card__title">Đã triển khai</p>
    <p class="card__sub">Phiên bản mới vừa lên</p>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
// Tailwind 「animate-in fade-in slide-in-from-top-8 duration-500」 의 500ms 를
// 리터럴로 재현 (이 편은 Tailwind 유틸 값을 그대로 옮기는 게 목적 — 사실.md 참고).
$duration: 500ms;
$easing: ease-out;
$color: $subject-cream;

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

.card {
  box-sizing: border-box;
  width: min(260px, 84vw);
  padding: $sp-6 $sp-6;
  border-radius: $r-card;
  background: $subject-ink;
  box-shadow: $shadow-raised;
  opacity: 0;
  transform: translateY(-32px); // slide-in-from-top-8 = spacing 8 × 4px = 32px
}

.card__title { margin: 0 0 $sp-1; color: $color; font-weight: 700; font-size: clamp(15px, 4vw, 18px); line-height: 1.3; font-family: inherit; }
.card__sub   { margin: 0; color: rgba($subject-cream, .7); font-weight: 400; font-size: clamp(13px, 3.4vw, 14px); line-height: 1.4; font-family: inherit; }

// 데모: 카드가 위에서 내려와 멈춰 있다가, 2초마다 다시 위로 리셋해 반복
.card.is-demo {
  animation: slide-in-loop 2s $easing infinite;
}

@keyframes slide-in-loop {
  0%   { opacity: 0; transform: translateY(-32px); }
  25%  { opacity: 1; transform: translateY(0); }
  85%  { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(-32px); }
}

// 실사용: 한 번만 재생 (JS 가 mount 시점에 건다)
.card.is-appear {
  animation: slide-in $duration $easing both;
}

@keyframes slide-in {
  from { opacity: 0; transform: translateY(-32px); }
  to   { opacity: 1; transform: translateY(0); }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .card.is-demo, .card.is-appear { animation: none; opacity: 1; transform: none; }
}

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);
}

.card {
  box-sizing: border-box;
  width: min(260px, 84vw);
  padding: 24px 24px;
  border-radius: 16px;
  background: #17141a;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  opacity: 0;
  transform: translateY(-32px);
}

.card__title {
  margin: 0 0 4px;
  color: #fff7e6;
  font-weight: 700;
  font-size: clamp(15px, 4vw, 18px);
  line-height: 1.3;
  font-family: inherit;
}

.card__sub {
  margin: 0;
  color: rgba(255, 247, 230, 0.7);
  font-weight: 400;
  font-size: clamp(13px, 3.4vw, 14px);
  line-height: 1.4;
  font-family: inherit;
}

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

@keyframes slide-in-loop {
  0% {
    opacity: 0;
    transform: translateY(-32px);
  }
  25% {
    opacity: 1;
    transform: translateY(0);
  }
  85% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-32px);
  }
}
.card.is-appear {
  animation: slide-in 500ms ease-out both;
}

@keyframes slide-in {
  from {
    opacity: 0;
    transform: translateY(-32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .card.is-demo, .card.is-appear {
    animation: none;
    opacity: 1;
    transform: none;
  }
}

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

export type TwAnimateInCardProps = {
  title?: string;
  subtitle?: string;
  /** tw-animate-css 의 duration-500 에 대응, ms */
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function TwAnimateInCard({
  title = "Deployed",
  subtitle = "The new version just went live",
  duration = 500,
  easing = "ease-out",
  color = "#fff7e6",
}: TwAnimateInCardProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.card} style={vars}>
      <p className={styles.card__title}>{title}</p>
      <p className={styles.card__sub}>{subtitle}</p>
    </div>
  );
}