05Ticket pricing

<main class="stage">
  <section class="tp is-demo">
    <button class="tp__switch" type="button" role="switch" aria-checked="false">
      <span class="tp__switch-label">Early Bird</span>
      <span class="tp__switch-track" aria-hidden="true"><span class="tp__switch-knob"></span></span>
      <span class="tp__switch-label">Regular</span>
    </button>
    <ul class="tp__cards">
      <li class="tp__card">
        <p class="tp__tier">Standard</p>
        <p class="tp__price"><span class="tp__price-a">₩49,000</span><span class="tp__price-b">₩69,000</span></p>
        <p class="tp__desc">All sessions · Booklet</p>
      </li>
      <li class="tp__card tp__card--pop">
        <span class="tp__badge">Popular</span>
        <p class="tp__tier">Premium</p>
        <p class="tp__price"><span class="tp__price-a">₩89,000</span><span class="tp__price-b">₩119,000</span></p>
        <p class="tp__desc">All sessions · Lunch</p>
      </li>
      <li class="tp__card">
        <p class="tp__tier">VIP</p>
        <p class="tp__price"><span class="tp__price-a">₩149,000</span><span class="tp__price-b">₩189,000</span></p>
        <p class="tp__desc">All perks · Dinner</p>
      </li>
    </ul>
  </section>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;                               // 스위치·가격 전환
$easing: $ease-spring;
$color: $subject-blue;                               // 스위치·인기 카드 강조색

@include stage($stage-ink);

.tp { width: min(420px, 94vw); }

.tp__switch {
  display: flex; align-items: center; gap: $sp-2;
  margin: 0 auto $sp-4;
  background: none; border: 0; padding: 0;
  cursor: pointer; font: inherit;
  -webkit-tap-highlight-color: transparent;
}
.tp__switch-label { font-weight: 600; font-size: 11px; line-height: 1; font-family: inherit; color: rgba(255, 247, 230, .55); }
.tp__switch-track {
  position: relative;
  width: 34px; height: $sp-4;
  border-radius: $r-pill;
  background: rgba(255, 247, 230, .18);
}
.tp__switch-knob {
  position: absolute; top: 2px; left: 2px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: $subject-cream;
  transform: translateX(0);
  transition: transform $duration $easing;
}
.tp__switch[aria-checked="true"] .tp__switch-knob { transform: translateX(18px); background: $color; }

.tp__cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: $sp-2; }
@media (max-width: 340px) { .tp__cards { grid-template-columns: 1fr; } }

@media (max-width: 340px), (max-height: 220px) {
  .tp__switch { margin-bottom: $sp-2; }
  .tp__cards { grid-template-columns: repeat(3, 1fr); gap: $sp-1; }
  .tp__card { padding: $sp-2 $sp-1; }
  .tp__desc { display: none; }
  .tp__tier { margin-bottom: $sp-1; font-size: 10px; }
}

.tp__card {
  position: relative;
  padding: $sp-4 $sp-2;
  border-radius: $r-card;
  background: rgba(255, 247, 230, .06);
  border: 1px solid rgba(255, 247, 230, .12);
  text-align: center;
}
.tp__card--pop {
  background: rgba(47, 109, 246, .14);
  border-color: $color;
  animation: tp-glow 2.4s ease-in-out infinite;
}
@keyframes tp-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(47, 109, 246, .35); }
  50%      { box-shadow: 0 0 18px 2px rgba(47, 109, 246, .35); }
}
.tp__badge {
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  padding: $sp-1 $sp-2;
  border-radius: $r-pill;
  background: $subject-blue-deep;
  color: $subject-cream;
  font-weight: 700; font-size: 9px; line-height: 1.6; font-family: inherit;
}
.tp__tier { margin: 0 0 $sp-2; font-weight: 700; font-size: clamp(11px, 3vw, 12px); line-height: 1; font-family: inherit; color: $subject-cream; }
.tp__price { position: relative; margin: 0 0 $sp-1; min-height: 18px; }
.tp__price-a, .tp__price-b {
  position: absolute; inset: 0;
  font-weight: 800; font-size: clamp(12px, 3.4vw, 14px); line-height: 1; font-family: inherit;
  color: $subject-cream;
  transition: opacity $duration $easing;
}
.tp__price-b { opacity: 0; }
.tp__switch[aria-checked="true"] ~ .tp__cards .tp__price-a { opacity: 0; }
.tp__switch[aria-checked="true"] ~ .tp__cards .tp__price-b { opacity: 1; }
.tp__desc { margin: $sp-4 0 0; font-weight: 500; font-size: 9px; line-height: 1.4; font-family: inherit; color: rgba(255, 247, 230, .55); }

// ── 데모 루프: 클릭 전까지 얼리버드 ↔ 정가를 스스로 오간다 ──────────────
.tp.is-demo .tp__switch-knob { animation: tp-knob $dur-loop $easing infinite; }
.tp.is-demo .tp__price-a { animation: tp-a $dur-loop $easing infinite; }
.tp.is-demo .tp__price-b { animation: tp-b $dur-loop $easing infinite; }
@keyframes tp-knob {
  0%, 40%  { transform: translateX(0); background: $subject-cream; }
  55%, 95% { transform: translateX(18px); background: $color; }
  100%     { transform: translateX(0); background: $subject-cream; }
}
@keyframes tp-a { 0%, 40% { opacity: 1; } 55%, 95% { opacity: 0; } 100% { opacity: 1; } }
@keyframes tp-b { 0%, 40% { opacity: 0; } 55%, 95% { opacity: 1; } 100% { opacity: 0; } }

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .tp__switch-knob, .tp__price-a, .tp__price-b { transition: none; }
  .tp__card--pop { animation: none; }
  .tp.is-demo .tp__switch-knob,
  .tp.is-demo .tp__price-a,
  .tp.is-demo .tp__price-b { animation: none !important; }
}

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);
}

.tp {
  width: min(420px, 94vw);
}

.tp__switch {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 auto 16px;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
}

.tp__switch-label {
  font-weight: 600;
  font-size: 11px;
  line-height: 1;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.55);
}

.tp__switch-track {
  position: relative;
  width: 34px;
  height: 16px;
  border-radius: 999px;
  background: rgba(255, 247, 230, 0.18);
}

.tp__switch-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff7e6;
  transform: translateX(0);
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tp__switch[aria-checked=true] .tp__switch-knob {
  transform: translateX(18px);
  background: #2f6df6;
}

.tp__cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

@media (max-width: 340px) {
  .tp__cards {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .tp__switch {
    margin-bottom: 8px;
  }
  .tp__cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
  }
  .tp__card {
    padding: 8px 4px;
  }
  .tp__desc {
    display: none;
  }
  .tp__tier {
    margin-bottom: 4px;
    font-size: 10px;
  }
}
.tp__card {
  position: relative;
  padding: 16px 8px;
  border-radius: 16px;
  background: rgba(255, 247, 230, 0.06);
  border: 1px solid rgba(255, 247, 230, 0.12);
  text-align: center;
}

.tp__card--pop {
  background: rgba(47, 109, 246, 0.14);
  border-color: #2f6df6;
  animation: tp-glow 2.4s ease-in-out infinite;
}

@keyframes tp-glow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(47, 109, 246, 0.35);
  }
  50% {
    box-shadow: 0 0 18px 2px rgba(47, 109, 246, 0.35);
  }
}
.tp__badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 4px 8px;
  border-radius: 999px;
  background: #0a4fe8;
  color: #fff7e6;
  font-weight: 700;
  font-size: 9px;
  line-height: 1.6;
  font-family: inherit;
}

.tp__tier {
  margin: 0 0 8px;
  font-weight: 700;
  font-size: clamp(11px, 3vw, 12px);
  line-height: 1;
  font-family: inherit;
  color: #fff7e6;
}

.tp__price {
  position: relative;
  margin: 0 0 4px;
  min-height: 18px;
}

.tp__price-a, .tp__price-b {
  position: absolute;
  inset: 0;
  font-weight: 800;
  font-size: clamp(12px, 3.4vw, 14px);
  line-height: 1;
  font-family: inherit;
  color: #fff7e6;
  transition: opacity 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tp__price-b {
  opacity: 0;
}

.tp__switch[aria-checked=true] ~ .tp__cards .tp__price-a {
  opacity: 0;
}

.tp__switch[aria-checked=true] ~ .tp__cards .tp__price-b {
  opacity: 1;
}

.tp__desc {
  margin: 16px 0 0;
  font-weight: 500;
  font-size: 9px;
  line-height: 1.4;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.55);
}

.tp.is-demo .tp__switch-knob {
  animation: tp-knob 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.tp.is-demo .tp__price-a {
  animation: tp-a 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.tp.is-demo .tp__price-b {
  animation: tp-b 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes tp-knob {
  0%, 40% {
    transform: translateX(0);
    background: #fff7e6;
  }
  55%, 95% {
    transform: translateX(18px);
    background: #2f6df6;
  }
  100% {
    transform: translateX(0);
    background: #fff7e6;
  }
}
@keyframes tp-a {
  0%, 40% {
    opacity: 1;
  }
  55%, 95% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes tp-b {
  0%, 40% {
    opacity: 0;
  }
  55%, 95% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .tp__switch-knob, .tp__price-a, .tp__price-b {
    transition: none;
  }
  .tp__card--pop {
    animation: none;
  }
  .tp.is-demo .tp__switch-knob,
  .tp.is-demo .tp__price-a,
  .tp.is-demo .tp__price-b {
    animation: none !important;
  }
}

// 실제 동작: 스위치를 누르면 세 카드의 가격이 실제로 Early Bird/정가로 바뀐다.
var sw = document.querySelector('.tp__switch');
sw.addEventListener('click', function () {
  document.querySelector('.tp').classList.remove('is-demo');
  var on = sw.getAttribute('aria-checked') === 'true';
  sw.setAttribute('aria-checked', String(!on));
});

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

const TIERS = [
  { name: "스탠다드", early: "49,000원", regular: "69,000원", desc: "세션 전체 · 자료집", pop: false },
  { name: "프리미엄", early: "89,000원", regular: "119,000원", desc: "세션 전체 · 네트워킹 런치", pop: true },
  { name: "VIP", early: "149,000원", regular: "189,000원", desc: "전 혜택 · 연사 디너", pop: false },
];

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

export default function TicketPricing({ duration = 300, easing = "cubic-bezier(.2,.8,.2,1)", color = "#2f6df6" }: TicketPricingProps) {
  const [regular, setRegular] = useState(false);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <section className={styles.tp} style={vars}>
      <button
        type="button"
        role="switch"
        aria-checked={regular}
        className={styles.switch}
        onClick={() => setRegular((v) => !v)}
      >
        <span className={styles.switchLabel}>얼리버드</span>
        <span className={styles.track} aria-hidden="true">
          <span className={styles.knob} style={{ transform: regular ? "translateX(18px)" : "translateX(0)" }} />
        </span>
        <span className={styles.switchLabel}>정가</span>
      </button>
      <ul className={styles.cards}>
        {TIERS.map((t) => (
          <li key={t.name} className={t.pop ? `${styles.card} ${styles.pop}` : styles.card}>
            {t.pop && <span className={styles.badge}>인기</span>}
            <p className={styles.tier}>{t.name}</p>
            <p className={styles.price}>{regular ? t.regular : t.early}</p>
            <p className={styles.desc}>{t.desc}</p>
          </li>
        ))}
      </ul>
    </section>
  );
}