05Live pulse dot badge

<main class="stage is-demo">
  <span class="badge" aria-label="live now">
    <span class="dot"></span>
    LIVE
  </span>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-loop;   // 2s — 핑 한 주기
$easing: $ease-out;
$color: $error;

@include stage($stage-ink);

.badge {
  display: inline-flex; align-items: center; gap: $sp-2;
  padding: $sp-2 $sp-4;
  border-radius: $r-pill;
  background: rgba($stage-paper, .08);
  color: $stage-paper;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .1em;
}

.dot {
  position: relative;
  width: $sp-2; height: $sp-2;
  border-radius: 50%;
  background: $color;
}

.dot::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: 50%;
  background: $color;
}

.stage.is-demo .dot::before {
  animation: ping $duration $easing infinite;
}

@keyframes ping {
  0% { transform: scale(1); opacity: .7; }
  70%, 100% { transform: scale(2.6); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .dot::before { animation: none; opacity: 0; }
}

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);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.1em;
}

.dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #c2361a;
}

.dot::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #c2361a;
}

.stage.is-demo .dot::before {
  animation: ping 2s ease-out infinite;
}

@keyframes ping {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  70%, 100% {
    transform: scale(2.6);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .dot::before {
    animation: none;
    opacity: 0;
  }
}

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

export type BadgeLivePulseDotProps = {
  duration?: number;
  easing?: string;
  color?: string;
  label?: string;
};

export default function BadgeLivePulseDot({
  duration = 2000,
  easing = "ease-out",
  color = "#c2361a",
  label = "LIVE",
}: BadgeLivePulseDotProps) {
  const vars: CSSProperties = { "--duration": `${duration}ms`, "--easing": easing, "--color": color } as CSSProperties;
  return (
    <span className={styles.badge} style={vars} aria-label="live now">
      <span className={styles.dot} />
      {label}
    </span>
  );
}