07Reaction emoji pop

<main class="stage">
  <div class="wrap is-demo">
    <div class="bubble">Morning!</div>
    <span class="reaction" aria-hidden="true">👍</span>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────────
$duration: $dur-quick;     // 이모지가 튀어 오르는 데 걸리는 시간
$easing: $ease-pop;
$color: $subject-cream;    // 말풍선 색 (orange 무대라 cream)

@include stage($stage-orange);

.wrap { position: relative; display: inline-block; }
.bubble {
  padding: 16px 24px;
  border-radius: $r-card;
  background: $color;
  color: $stage-ink;
  font-weight: 600; font-size: clamp(15px, 4.8vw, 18px); line-height: 1.4; font-family: inherit;
  transform-origin: center;

  .wrap.is-demo & { animation: bubble-settle-loop $dur-loop $easing infinite; }
}
.reaction {
  position: absolute;
  right: -16px;
  bottom: -16px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  font-size: 22px;
  box-shadow: $shadow-press;
  transform: scale(0);
  transform-origin: center;

  .wrap.is-demo & { animation: reaction-pop-loop $dur-loop $easing infinite; }
}

// 눌린 순간 말풍선도 살짝 눌렸다 돌아오고, 이모지가 오버슈트로 튀어 오른다
@keyframes bubble-settle-loop {
  0%   { transform: scale(1); }
  55%  { transform: scale(1); }
  66%  { transform: scale(.96); }
  76%  { transform: scale(1); }
  100% { transform: scale(1); }
}
@keyframes reaction-pop-loop {
  0%   { transform: scale(0); opacity: 0; }
  55%  { transform: scale(0); opacity: 0; }
  70%  { transform: scale(1.3); opacity: 1; }
  80%  { transform: scale(1); opacity: 1; }
  96%  { transform: scale(1); opacity: 1; }
  100% { transform: scale(0); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .wrap.is-demo .bubble, .wrap.is-demo .reaction { animation: none !important; }
  .wrap.is-demo .reaction { transform: scale(1); opacity: 1; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.wrap {
  position: relative;
  display: inline-block;
}

.bubble {
  padding: 16px 24px;
  border-radius: 16px;
  background: #fff7e6;
  color: #17141a;
  font-weight: 600;
  font-size: clamp(15px, 4.8vw, 18px);
  line-height: 1.4;
  font-family: inherit;
  transform-origin: center;
}
.wrap.is-demo .bubble {
  animation: bubble-settle-loop 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.reaction {
  position: absolute;
  right: -16px;
  bottom: -16px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  font-size: 22px;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  transform: scale(0);
  transform-origin: center;
}
.wrap.is-demo .reaction {
  animation: reaction-pop-loop 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes bubble-settle-loop {
  0% {
    transform: scale(1);
  }
  55% {
    transform: scale(1);
  }
  66% {
    transform: scale(0.96);
  }
  76% {
    transform: scale(1);
  }
  100% {
    transform: scale(1);
  }
}
@keyframes reaction-pop-loop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  55% {
    transform: scale(0);
    opacity: 0;
  }
  70% {
    transform: scale(1.3);
    opacity: 1;
  }
  80% {
    transform: scale(1);
    opacity: 1;
  }
  96% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(0);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .wrap.is-demo .bubble, .wrap.is-demo .reaction {
    animation: none !important;
  }
  .wrap.is-demo .reaction {
    transform: scale(1);
    opacity: 1;
  }
}

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

export type ReactionEmojiPopProps = {
  children: ReactNode;
  emoji?: string;
  /** 이모지가 튀어 오르는 데 걸리는 시간 (기본 220ms) */
  duration?: number;
  easing?: string;
  className?: string;
};

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

export default function ReactionEmojiPop({
  children,
  emoji = "👍",
  duration = 220,
  easing = "cubic-bezier(.2, 1.4, .4, 1)",
  className = "",
}: ReactionEmojiPopProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing };

  return (
    <div className={`${styles.wrap} ${className}`} style={vars}>
      <div className={styles.bubble}>{children}</div>
      <span className={`${styles.reaction} ${styles.enter}`} aria-hidden="true">{emoji}</span>
    </div>
  );
}