06마감 임박 배너

<main class="stage">
  <section class="ub">
    <span class="ub__live" aria-hidden="true"><span class="ub__dot"></span>LIVE</span>
    <div class="ub__body">
      <p class="ub__msg">선착순 마감까지 <strong>5자리</strong> 남았어요</p>
      <div class="ub__bar" role="progressbar" aria-valuenow="82" aria-valuemin="0" aria-valuemax="100" aria-label="선착순 마감률">
        <span class="ub__fill"></span>
      </div>
    </div>
    <button type="button" class="ub__more" aria-pressed="false">자세히</button>
  </section>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-quick;                                // "자세히" 전환
$easing: $ease-pop;
$color: $error;

@include stage($stage-yellow);

.ub {
  box-sizing: border-box;                           // width 에 패딩을 포함 — 아니면 320px 에서 패딩만큼 넘친다(실측 2026-09-10)
  width: min(400px, 96vw);
  display: flex;
  align-items: center;
  gap: $sp-3;
  padding: $sp-3 $sp-4;
  border-radius: $r-control;
  background: $subject-ink;
  box-shadow: $shadow-raised;
}

.ub__live {
  display: flex;
  align-items: center;
  gap: $sp-1;
  flex: 0 0 auto;
  padding: $sp-1 $sp-2;
  border-radius: $r-xs;
  background: rgba(194, 54, 26, .22);
  color: #e0c8c1;
  font-weight: 800; font-size: 9px; line-height: 1; font-family: inherit;
  letter-spacing: .06em;
}
.ub__dot { width: 6px; height: 6px; border-radius: 50%; background: #d1a9a1; animation: ub-blink 1.2s ease-in-out infinite; }
@keyframes ub-blink {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .35; transform: scale(.8); }
}

.ub__body { flex: 1 1 auto; min-width: 0; }
.ub__msg { margin: 0 0 $sp-1; font-weight: 600; font-size: 12px; line-height: 1.3; font-family: inherit; color: $subject-cream; }
.ub__msg strong { color: $stage-yellow; }
.ub__bar { height: 6px; border-radius: $r-xs; background: rgba(255, 247, 230, .14); overflow: hidden; }
.ub__fill {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: $r-xs;
  background: linear-gradient(90deg, #dcc2b7, #d1a9a1);
  transform: scaleX(.82);
  transform-origin: left center; // 규칙8: 재고 막대 왼쪽 채움
  animation: ub-fill 2.4s $easing infinite;
}
@keyframes ub-fill {
  0%, 100% { transform: scaleX(.78); }
  50%      { transform: scaleX(.92); }
}

.ub__more {
  flex: 0 0 auto;
  border: 0;
  cursor: pointer;
  padding: $sp-1 $sp-3;
  border-radius: $r-pill;
  background: rgba(255, 247, 230, .12);
  color: $subject-cream;
  font-weight: 700; font-size: 11px; line-height: 1; font-family: inherit;
  transition: background $duration $easing;
}
.ub__more[aria-pressed="true"] { background: rgba(255, 247, 230, .28); }

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .ub__dot, .ub__fill { animation: none !important; }
  .ub__more { transition: none !important; }
}

// ── 반응형(320×200) ──────────────────────────────────
@media (max-width: 340px), (max-height: 220px) {
  .ub { flex-wrap: wrap; padding: $sp-2 $sp-3; }
  .ub__more { display: 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);
}

.ub {
  box-sizing: border-box;
  width: min(400px, 96vw);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  background: #17141a;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.ub__live {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(194, 54, 26, 0.22);
  color: #e0c8c1;
  font-weight: 800;
  font-size: 9px;
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.06em;
}

.ub__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #d1a9a1;
  animation: ub-blink 1.2s ease-in-out infinite;
}

@keyframes ub-blink {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.35;
    transform: scale(0.8);
  }
}
.ub__body {
  flex: 1 1 auto;
  min-width: 0;
}

.ub__msg {
  margin: 0 0 4px;
  font-weight: 600;
  font-size: 12px;
  line-height: 1.3;
  font-family: inherit;
  color: #fff7e6;
}

.ub__msg strong {
  color: #ffd23f;
}

.ub__bar {
  height: 6px;
  border-radius: 4px;
  background: rgba(255, 247, 230, 0.14);
  overflow: hidden;
}

.ub__fill {
  display: block;
  height: 100%;
  width: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, #dcc2b7, #d1a9a1);
  transform: scaleX(0.82);
  transform-origin: left center;
  animation: ub-fill 2.4s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes ub-fill {
  0%, 100% {
    transform: scaleX(0.78);
  }
  50% {
    transform: scaleX(0.92);
  }
}
.ub__more {
  flex: 0 0 auto;
  border: 0;
  cursor: pointer;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 247, 230, 0.12);
  color: #fff7e6;
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  font-family: inherit;
  transition: background 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.ub__more[aria-pressed=true] {
  background: rgba(255, 247, 230, 0.28);
}

@media (prefers-reduced-motion: reduce) {
  .ub__dot, .ub__fill {
    animation: none !important;
  }
  .ub__more {
    transition: none !important;
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .ub {
    flex-wrap: wrap;
    padding: 8px 12px;
  }
  .ub__more {
    display: none;
  }
}

// 실제 동작: "자세히" 를 누르면 aria-pressed 가 바뀌고 알림 문구가 실제로 펼쳐진다.
var btn = document.querySelector('.ub__more');
var msg = document.querySelector('.ub__msg');
var base = msg.textContent;
btn.addEventListener('click', function () {
  var on = btn.getAttribute('aria-pressed') === 'true';
  btn.setAttribute('aria-pressed', String(!on));
  msg.innerHTML = on ? '선착순 마감까지 <strong>5자리</strong> 남았어요' : '선착순 마감까지 <strong>5자리</strong> 남았어요 · 마감 후 정가 복귀';
});

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

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

export default function UrgencyBanner({ duration = 220, easing = "cubic-bezier(.2,1.4,.4,1)", color = "#c2361a", spotsLeft = 5 }: UrgencyBannerProps) {
  const [expanded, setExpanded] = useState(false);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <div className={styles.ub} style={vars}>
      <span className={styles.live} aria-hidden="true"><span className={styles.dot} />LIVE</span>
      <div className={styles.body}>
        <p className={styles.msg}>
          선착순 마감까지 <strong>{spotsLeft}자리</strong> 남았어요{expanded ? " · 마감 후 정가 복귀" : ""}
        </p>
        <div className={styles.bar} role="progressbar" aria-valuenow={82} aria-valuemin={0} aria-valuemax={100} aria-label="선착순 마감률">
          <span className={styles.fill} />
        </div>
      </div>
      <button type="button" className={styles.more} aria-pressed={expanded} onClick={() => setExpanded((v) => !v)}>
        자세히
      </button>
    </div>
  );
}