06Testimonial slider

<main class="stage">
  <div class="ts">
    <div class="ts__stack">
      <figure class="ts__card ts__card--1">
        <span class="ts__avatar">M</span>
        <blockquote class="ts__quote">"Delivery arrived the very next day. Packaging was careful too."</blockquote>
        <figcaption class="ts__name">Minji Kim</figcaption>
      </figure>
      <figure class="ts__card ts__card--2">
        <span class="ts__avatar">S</span>
        <blockquote class="ts__quote">"The color matched the photos exactly. I'll definitely buy again."</blockquote>
        <figcaption class="ts__name">Seojun Lee</figcaption>
      </figure>
      <figure class="ts__card ts__card--3">
        <span class="ts__avatar">H</span>
        <blockquote class="ts__quote">"Support replied fast and kindly — it made me trust the shop."</blockquote>
        <figcaption class="ts__name">Haeun Park</figcaption>
      </figure>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-loop;                 // 카드 한 장이 머무는 박자의 기준
$easing: $ease-out;
$color: $subject-blue;

@include stage($stage-paper);

.ts { width: min(340px, 84vw); }

// ── 실제 동작: 카드 3장을 같은 grid 칸에 겹치고 opacity 만 @keyframes 로 순환 — 0줄 JS ──
.ts__stack {
  position: relative;
  display: grid;
  border-radius: $r-card;
  background: $subject-ink;
  padding: $sp-4 $sp-5;
  min-height: 128px;
}
.ts__card {
  grid-area: 1 / 1;
  margin: 0;
  opacity: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: $sp-2;
}
.ts__avatar {
  width: $sp-8; height: $sp-8;
  border-radius: 50%;
  display: grid; place-items: center;
  background: $color;
  color: $subject-cream;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  font-family: inherit;
}
.ts__quote {
  margin: 0;
  color: $subject-cream;
  font-weight: 400;
  font-size: clamp(13px, 3.6vw, 15px);
  line-height: 1.5;
  font-family: inherit;
}
.ts__name {
  color: rgba(255, 247, 230, .6);
  font-weight: 600;
  font-size: clamp(11px, 3vw, 12px);
  line-height: 1;
  font-family: inherit;
}
.ts__card--1 { animation: ts-1 $duration $easing infinite; }
.ts__card--2 { animation: ts-2 $duration $easing infinite; }
.ts__card--3 { animation: ts-3 $duration $easing infinite; }
// 교차 페이드 창을 12% 로 넓게 — 마지막→처음 순간에 배경이 뚫리는 팝 없이
// 3번의 페이드아웃(88→100%)과 1번의 페이드인(0→12%)이 릴레이로 이어진다 (텔레포트 금지)
@keyframes ts-1 { 0% { opacity: 0; } 12%, 25% { opacity: 1; } 37%, 100% { opacity: 0; } }
@keyframes ts-2 { 0%, 25% { opacity: 0; } 37%, 58% { opacity: 1; } 70%, 100% { opacity: 0; } }
@keyframes ts-3 { 0%, 58% { opacity: 0; } 70%, 88% { opacity: 1; } 100% { opacity: 0; } }

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .ts__card { animation: none !important; }
  .ts__card--1 { opacity: 1; }
  .ts__card--2, .ts__card--3 { opacity: 0; }
}

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

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

.ts {
  width: min(340px, 84vw);
}

.ts__stack {
  position: relative;
  display: grid;
  border-radius: 16px;
  background: #17141a;
  padding: 16px 20px;
  min-height: 128px;
}

.ts__card {
  grid-area: 1/1;
  margin: 0;
  opacity: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.ts__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #2f6df6;
  color: #fff7e6;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  font-family: inherit;
}

.ts__quote {
  margin: 0;
  color: #fff7e6;
  font-weight: 400;
  font-size: clamp(13px, 3.6vw, 15px);
  line-height: 1.5;
  font-family: inherit;
}

.ts__name {
  color: rgba(255, 247, 230, 0.6);
  font-weight: 600;
  font-size: clamp(11px, 3vw, 12px);
  line-height: 1;
  font-family: inherit;
}

.ts__card--1 {
  animation: ts-1 2s ease-out infinite;
}

.ts__card--2 {
  animation: ts-2 2s ease-out infinite;
}

.ts__card--3 {
  animation: ts-3 2s ease-out infinite;
}

@keyframes ts-1 {
  0% {
    opacity: 0;
  }
  12%, 25% {
    opacity: 1;
  }
  37%, 100% {
    opacity: 0;
  }
}
@keyframes ts-2 {
  0%, 25% {
    opacity: 0;
  }
  37%, 58% {
    opacity: 1;
  }
  70%, 100% {
    opacity: 0;
  }
}
@keyframes ts-3 {
  0%, 58% {
    opacity: 0;
  }
  70%, 88% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ts__card {
    animation: none !important;
  }
  .ts__card--1 {
    opacity: 1;
  }
  .ts__card--2, .ts__card--3 {
    opacity: 0;
  }
}

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

const REVIEWS = [
  { avatar: "민", quote: "배송이 다음 날 바로 왔어요. 포장도 꼼꼼했습니다.", name: "김민지" },
  { avatar: "서", quote: "색상이 사진이랑 똑같아서 놀랐어요. 재구매 예정.", name: "이서준" },
  { avatar: "하", quote: "고객센터 응대가 빠르고 친절해서 믿음이 갑니다.", name: "박하은" },
];

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

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

export default function TestimonialSlider({ duration = 2000, easing = "ease-out", color = "#2f6df6" }: TestimonialSliderProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.ts} style={vars}>
      {/* 카드 3장이 같은 grid 칸에 겹쳐 opacity 로만 순환 — 0줄 JS */}
      <div className={styles.stack}>
        {REVIEWS.map((r, i) => (
          <figure key={r.name} className={`${styles.card} ${styles["card" + (i + 1)]}`}>
            <span className={styles.avatar}>{r.avatar}</span>
            <blockquote className={styles.quote}>&quot;{r.quote}&quot;</blockquote>
            <figcaption className={styles.name}>{r.name}</figcaption>
          </figure>
        ))}
      </div>
    </div>
  );
}