CSS 슬라이더로 만드는 캐러셀 9가지 — 복붙 코드

<main class="stage">
  <div class="pn is-demo">
    <div class="pn__viewport">
      <div class="pn__track">
        <div class="pn__slide pn__slide--1"><span class="pn__cap">01</span></div>
        <div class="pn__slide pn__slide--2"><span class="pn__cap">02</span></div>
        <div class="pn__slide pn__slide--3"><span class="pn__cap">03</span></div>
        <div class="pn__slide pn__slide--4"><span class="pn__cap">04</span></div>
        <div class="pn__slide pn__slide--1" aria-hidden="true"><span class="pn__cap">01</span></div>
        <div class="pn__slide pn__slide--2" aria-hidden="true"><span class="pn__cap">02</span></div>
      </div>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-spring;
$color: $subject-blue;

@include stage($stage-ink);

.pn { width: min(360px, 88vw); }

// ── 실제 동작: overflow-x:auto + scroll-snap-type + scroll-padding-left (0줄 JS) ──
// 카드가 뷰포트의 78% 만 차지해 다음 카드가 22% 만큼 미리 보인다.
.pn__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-left: $sp-4;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  &::-webkit-scrollbar { display: none; }
}
.pn__track {
  display: flex;
  width: max-content;
}
.pn__slide {
  flex: 0 0 200px;
  aspect-ratio: 4 / 3;
  scroll-snap-align: start;
  margin-right: $sp-3;
  border-radius: $r-card;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: end start;
  box-sizing: border-box;
  &:last-child { margin-right: 0; }
}
.pn__slide--1 { background: linear-gradient(135deg, $color, #d6ddeb); }
.pn__slide--2 { background: linear-gradient(135deg, $stage-orange, #ebdbd6); }
.pn__slide--3 { background: linear-gradient(135deg, #c2ae82, $stage-yellow); }
.pn__slide--4 { background: linear-gradient(135deg, $subject-ink, #4a3f5c); }
.pn__cap {
  position: relative; z-index: 1;
  margin: $sp-4;
  padding: $sp-1 $sp-3;
  border-radius: $r-pill;
  background: rgba(255, 255, 255, .85);
  color: $subject-ink;
  font-weight: 700;
  font-size: clamp(12px, 3.2vw, 14px);
  line-height: 1;
  font-family: inherit;
}

// ── 데모 루프: 클릭·드래그 전까지 한 칸씩 스스로 넘어간다 (진짜 스크롤은 그대로 살아있다) ──
// 트랙 끝에는 1번의 복제본(aria-hidden)이 한 장 더 — 그곳까지 정상 속도로 가고
// 100%→0% 점프는 복제본이 1번과 같아 안 보인다 (끝→처음 텔레포트 금지, 사용자 2026-09-11)
.pn.is-demo .pn__track { animation: pn-loop $dur-loop $easing infinite; }
@keyframes pn-loop {
  0%, 8%    { transform: translateX(0px); }
  23%, 31%  { transform: translateX(-212px); }
  46%, 54%  { transform: translateX(-424px); }
  69%, 77%  { transform: translateX(-636px); }
  92%, 100% { transform: translateX(-848px); }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .pn.is-demo .pn__track { animation: none !important; }
  .pn__viewport { scroll-behavior: auto; }
}

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);
}

.pn {
  width: min(360px, 88vw);
}

.pn__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-left: 16px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.pn__viewport::-webkit-scrollbar {
  display: none;
}

.pn__track {
  display: flex;
  width: max-content;
}

.pn__slide {
  flex: 0 0 200px;
  aspect-ratio: 4/3;
  scroll-snap-align: start;
  margin-right: 12px;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: end start;
  box-sizing: border-box;
}
.pn__slide:last-child {
  margin-right: 0;
}

.pn__slide--1 {
  background: linear-gradient(135deg, #2f6df6, #d6ddeb);
}

.pn__slide--2 {
  background: linear-gradient(135deg, #ff4d1f, #ebdbd6);
}

.pn__slide--3 {
  background: linear-gradient(135deg, #c2ae82, #ffd23f);
}

.pn__slide--4 {
  background: linear-gradient(135deg, #17141a, #4a3f5c);
}

.pn__cap {
  position: relative;
  z-index: 1;
  margin: 16px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  color: #17141a;
  font-weight: 700;
  font-size: clamp(12px, 3.2vw, 14px);
  line-height: 1;
  font-family: inherit;
}

.pn.is-demo .pn__track {
  animation: pn-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes pn-loop {
  0%, 8% {
    transform: translateX(0px);
  }
  23%, 31% {
    transform: translateX(-212px);
  }
  46%, 54% {
    transform: translateX(-424px);
  }
  69%, 77% {
    transform: translateX(-636px);
  }
  92%, 100% {
    transform: translateX(-848px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .pn.is-demo .pn__track {
    animation: none !important;
  }
  .pn__viewport {
    scroll-behavior: auto;
  }
}

// 실제 동작은 overflow-x:auto + scroll-snap-type + scroll-padding 만으로 끝난다(0줄).
// 이 3줄은 미리보기 자동 재생만 멈춘다 — 진짜 드래그·스크롤은 그대로 살아있다.
document.querySelector('.pn__viewport').addEventListener('pointerdown', function () {
  document.querySelector('.pn').classList.remove('is-demo');
});

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

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

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

export default function PeekNext({ duration = 300, easing = "cubic-bezier(.2,.8,.2,1)", color = "#2f6df6" }: PeekNextProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.pn} style={vars}>
      {/* 실제 동작은 overflow-x:auto + scroll-snap-type + scroll-padding-left 만으로 끝난다 — 0줄 JS */}
      <div className={styles.viewport}>
        <div className={styles.track}>
          {[1, 2, 3, 4].map((n) => (
            <div key={n} className={`${styles.slide} ${styles["slide" + n]}`}>
              <span className={styles.cap}>{String(n).padStart(2, "0")}</span>
            </div>
          ))}
        </div>
      </div>
    </div>
  );
}

<main class="stage">
  <div class="ra is-demo">
    <input type="radio" name="ra-tab" id="ra-1" class="ra__radio" checked>
    <input type="radio" name="ra-tab" id="ra-2" class="ra__radio">
    <input type="radio" name="ra-tab" id="ra-3" class="ra__radio">
    <div class="ra__viewport">
      <div class="ra__track">
        <div class="ra__slide ra__slide--1">
          <label class="ra__next" for="ra-2" aria-label="다음 슬라이드">›</label>
        </div>
        <div class="ra__slide ra__slide--2">
          <label class="ra__prev" for="ra-1" aria-label="이전 슬라이드">‹</label>
          <label class="ra__next" for="ra-3" aria-label="다음 슬라이드">›</label>
        </div>
        <div class="ra__slide ra__slide--3">
          <label class="ra__prev" for="ra-2" aria-label="이전 슬라이드">‹</label>
        </div>
        <div class="ra__slide ra__slide--1" aria-hidden="true">
          <span class="ra__next" aria-hidden="true">›</span>
        </div>
      </div>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-spring;
$color: $stage-orange;

@include stage($stage-yellow);

.ra { width: min(360px, 88vw); }
.ra__radio { position: absolute; opacity: 0; pointer-events: none; }

// ── 실제 동작: 고른 라디오에 맞춰 트랙 전체가 밀린다 (형제결합자 + :checked, 0줄 JS) ──
// 트랙 끝에는 1번의 복제본(aria-hidden)이 한 장 더 — 예고편 루프의 끝→처음 점프를 숨긴다 (텔레포트 금지)
.ra__viewport { overflow: hidden; border-radius: $r-card; }
.ra__track {
  display: flex;
  width: 400%;
  transition: transform $duration $easing;
}
#ra-1:checked ~ .ra__viewport .ra__track { transform: translateX(0%); }
#ra-2:checked ~ .ra__viewport .ra__track { transform: translateX(-25%); }
#ra-3:checked ~ .ra__viewport .ra__track { transform: translateX(-50%); }

.ra__slide {
  flex: 0 0 25%;
  aspect-ratio: 16 / 9;
  position: relative;
  display: grid;
}
.ra__slide--1 { background: linear-gradient(135deg, $subject-ink, #4a3f5c); }
.ra__slide--2 { background: linear-gradient(135deg, $color, #ebdbd6); }
.ra__slide--3 { background: linear-gradient(135deg, $subject-blue, #d6ddeb); }

.ra__prev, .ra__next {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: $sp-8; height: $sp-8;
  display: grid; place-items: center;
  border-radius: $r-pill;
  background: rgba(255, 255, 255, .85);
  color: $subject-ink;
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
  box-shadow: $shadow-press;
}
.ra__prev { left: $sp-3; }
.ra__next { right: $sp-3; }

// ── 데모 루프: 클릭 전까지 라디오가 스스로 1→2→3→1 순으로 넘어간다 (checked 는 1번 그대로) ──
// 마지막 칸(-75%)은 1번의 복제본 — 100%→0% 점프가 복제본=1번이라 안 보인다
.ra.is-demo .ra__viewport .ra__track { animation: ra-loop $dur-loop $easing infinite; }
@keyframes ra-loop {
  0%, 8%    { transform: translateX(0%); }
  31%, 39%  { transform: translateX(-25%); }
  62%, 70%  { transform: translateX(-50%); }
  92%, 100% { transform: translateX(-75%); }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .ra__track { transition: none; }
  .ra.is-demo .ra__viewport .ra__track { 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: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ra {
  width: min(360px, 88vw);
}

.ra__radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.ra__viewport {
  overflow: hidden;
  border-radius: 16px;
}

.ra__track {
  display: flex;
  width: 400%;
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

#ra-1:checked ~ .ra__viewport .ra__track {
  transform: translateX(0%);
}

#ra-2:checked ~ .ra__viewport .ra__track {
  transform: translateX(-25%);
}

#ra-3:checked ~ .ra__viewport .ra__track {
  transform: translateX(-50%);
}

.ra__slide {
  flex: 0 0 25%;
  aspect-ratio: 16/9;
  position: relative;
  display: grid;
}

.ra__slide--1 {
  background: linear-gradient(135deg, #17141a, #4a3f5c);
}

.ra__slide--2 {
  background: linear-gradient(135deg, #ff4d1f, #ebdbd6);
}

.ra__slide--3 {
  background: linear-gradient(135deg, #2f6df6, #d6ddeb);
}

.ra__prev, .ra__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  color: #17141a;
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
}

.ra__prev {
  left: 12px;
}

.ra__next {
  right: 12px;
}

.ra.is-demo .ra__viewport .ra__track {
  animation: ra-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes ra-loop {
  0%, 8% {
    transform: translateX(0%);
  }
  31%, 39% {
    transform: translateX(-25%);
  }
  62%, 70% {
    transform: translateX(-50%);
  }
  92%, 100% {
    transform: translateX(-75%);
  }
}
@media (prefers-reduced-motion: reduce) {
  .ra__track {
    transition: none;
  }
  .ra.is-demo .ra__viewport .ra__track {
    animation: none !important;
  }
}

// 실제 동작은 라디오 :checked + 형제결합자로 트랙을 미는 것만으로 끝난다(0줄).
// 이 3줄은 미리보기 자동 재생만 멈춘다.
document.querySelectorAll('.ra__radio, .ra__prev, .ra__next').forEach(function (el) {
  el.addEventListener('pointerdown', function () { document.querySelector('.ra').classList.remove('is-demo'); });
});

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

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

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

const N = 3;

export default function RadioArrows({ duration = 300, easing = "cubic-bezier(.2,.8,.2,1)", color = "#ff4d1f" }: RadioArrowsProps) {
  const [active, setActive] = useState(0);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color, "--pos": `${-active * (100 / N)}%` };
  return (
    <div className={styles.ra} style={vars}>
      {/* 원본은 라디오 :checked + 형제결합자로 트랙을 민다(0줄 JS). 리액트 판은 같은 이동을 useState 로 대신한다 */}
      <div className={styles.viewport}>
        <div className={styles.track}>
          {[1, 2, 3].map((n) => (
            <div key={n} className={`${styles.slide} ${styles["slide" + n]}`} />
          ))}
        </div>
      </div>
      <button type="button" className={styles.prev} aria-label="이전 슬라이드" onClick={() => setActive((active - 1 + N) % N)}>‹</button>
      <button type="button" className={styles.next} aria-label="다음 슬라이드" onClick={() => setActive((active + 1) % N)}>›</button>
    </div>
  );
}

<main class="stage">
  <div class="dt is-demo">
    <div class="dt__viewport">
      <div class="dt__track">
        <section id="dt-s1" class="dt__slide dt__slide--1"></section>
        <section id="dt-s2" class="dt__slide dt__slide--2"></section>
        <section id="dt-s3" class="dt__slide dt__slide--3"></section>
        <section class="dt__slide dt__slide--1" aria-hidden="true"></section>
      </div>
    </div>
    <nav class="dt__dots">
      <a href="#dt-s1" class="dt__dot dt__dot--1" aria-label="슬라이드 1"></a>
      <a href="#dt-s2" class="dt__dot dt__dot--2" aria-label="슬라이드 2"></a>
      <a href="#dt-s3" class="dt__dot dt__dot--3" aria-label="슬라이드 3"></a>
    </nav>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-spring;
$color: $stage-yellow;

@include stage($stage-orange);

.dt { width: min(300px, 80vw); }

// ── 실제 동작: <a href="#id"> 로 진짜 앵커 이동 + :target 으로 슬라이드가 스크롤 상자 안에서 이동 (0줄 JS) ──
.dt__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  border-radius: $r-card;
  scrollbar-width: none;
  &::-webkit-scrollbar { display: none; }
}
.dt__track { display: flex; width: max-content; }
.dt__slide {
  flex: 0 0 min(300px, 80vw);
  aspect-ratio: 16 / 9;
  scroll-snap-align: start;
  scroll-margin-left: 0;
}
.dt__slide--1 { background: linear-gradient(135deg, $subject-ink, #4a3f5c); }
.dt__slide--2 { background: linear-gradient(135deg, $subject-blue, #d6ddeb); }
.dt__slide--3 { background: linear-gradient(135deg, $color, #ebe7d6); }

.dt__dots {
  display: flex;
  justify-content: center;
  gap: $sp-2;
  margin-top: $sp-3;
}
.dt__dot {
  width: $sp-2; height: $sp-2;
  border-radius: 50%;
  background: rgba(23, 20, 26, .28);
  transition: transform $duration $easing, background $duration $easing;
}
// :target 은 링크(dot)가 아니라 가리킨 슬라이드(section)에 붙는다 — :has() 로 같은 편의 점을 역으로 찾아 칠한다
.dt:has(#dt-s1:target) .dt__dot--1,
.dt:has(#dt-s2:target) .dt__dot--2,
.dt:has(#dt-s3:target) .dt__dot--3 {
  background: $color;
  transform: scale(1.4);
}

// ── 데모 루프: 진짜 :target 상태는 그대로 두고, 트랙·점만 미리보기로 스스로 순환한다 ──
// 트랙 끝에는 1번의 복제본(aria-hidden)이 한 장 더 — 그곳까지 정상 속도로 가고 100%→0% 점프는
// 복제본=1번이라 안 보인다 (끝→처음 텔레포트 금지). % 는 트랙(max-content=슬라이드 4장) 기준이라
// 한 칸은 정확히 -25% — 슬라이드 폭이 vw 단위라 창이 좁아져도 어긋나지 않는다
.dt.is-demo .dt__track { animation: dt-track $dur-loop $easing infinite; }
.dt.is-demo .dt__dot--1 { animation: dt-dot-1 $dur-loop $easing infinite; }
.dt.is-demo .dt__dot--2 { animation: dt-dot-2 $dur-loop $easing infinite; }
.dt.is-demo .dt__dot--3 { animation: dt-dot-3 $dur-loop $easing infinite; }
@keyframes dt-track {
  0%, 8%    { transform: translateX(0); }
  31%, 39%  { transform: translateX(-25%); }
  62%, 70%  { transform: translateX(-50%); }
  92%, 100% { transform: translateX(-75%); }
}
// 점 1번은 루프 끝(92~100%, 복제본=1번이 보이는 구간)에 다시 켜진다 — 100% 와 0% 의 상태가 같아야
// 루프 경계에서 점이 순간이동으로 바뀌지 않는다
@keyframes dt-dot-1 { 0%, 4% { background: $color; transform: scale(1.4); } 29%, 88% { background: rgba(23,20,26,.28); transform: scale(1); } 92%, 100% { background: $color; transform: scale(1.4); } }
@keyframes dt-dot-2 { 0%, 29% { background: rgba(23,20,26,.28); transform: scale(1); } 33%, 62% { background: $color; transform: scale(1.4); } 66%, 100% { background: rgba(23,20,26,.28); transform: scale(1); } }
@keyframes dt-dot-3 { 0%, 62% { background: rgba(23,20,26,.28); transform: scale(1); } 66%, 96% { background: $color; transform: scale(1.4); } 100% { background: rgba(23,20,26,.28); transform: scale(1); } }

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .dt.is-demo .dt__track,
  .dt.is-demo .dt__dot--1,
  .dt.is-demo .dt__dot--2,
  .dt.is-demo .dt__dot--3 { animation: none !important; }
  .dt__viewport { scroll-behavior: auto; }
}

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);
}

.dt {
  width: min(300px, 80vw);
}

.dt__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  border-radius: 16px;
  scrollbar-width: none;
}
.dt__viewport::-webkit-scrollbar {
  display: none;
}

.dt__track {
  display: flex;
  width: max-content;
}

.dt__slide {
  flex: 0 0 min(300px, 80vw);
  aspect-ratio: 16/9;
  scroll-snap-align: start;
  scroll-margin-left: 0;
}

.dt__slide--1 {
  background: linear-gradient(135deg, #17141a, #4a3f5c);
}

.dt__slide--2 {
  background: linear-gradient(135deg, #2f6df6, #d6ddeb);
}

.dt__slide--3 {
  background: linear-gradient(135deg, #ffd23f, #ebe7d6);
}

.dt__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}

.dt__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(23, 20, 26, 0.28);
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1), background 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.dt:has(#dt-s1:target) .dt__dot--1,
.dt:has(#dt-s2:target) .dt__dot--2,
.dt:has(#dt-s3:target) .dt__dot--3 {
  background: #ffd23f;
  transform: scale(1.4);
}

.dt.is-demo .dt__track {
  animation: dt-track 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.dt.is-demo .dt__dot--1 {
  animation: dt-dot-1 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.dt.is-demo .dt__dot--2 {
  animation: dt-dot-2 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.dt.is-demo .dt__dot--3 {
  animation: dt-dot-3 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes dt-track {
  0%, 8% {
    transform: translateX(0);
  }
  31%, 39% {
    transform: translateX(-25%);
  }
  62%, 70% {
    transform: translateX(-50%);
  }
  92%, 100% {
    transform: translateX(-75%);
  }
}
@keyframes dt-dot-1 {
  0%, 4% {
    background: #ffd23f;
    transform: scale(1.4);
  }
  29%, 88% {
    background: rgba(23, 20, 26, 0.28);
    transform: scale(1);
  }
  92%, 100% {
    background: #ffd23f;
    transform: scale(1.4);
  }
}
@keyframes dt-dot-2 {
  0%, 29% {
    background: rgba(23, 20, 26, 0.28);
    transform: scale(1);
  }
  33%, 62% {
    background: #ffd23f;
    transform: scale(1.4);
  }
  66%, 100% {
    background: rgba(23, 20, 26, 0.28);
    transform: scale(1);
  }
}
@keyframes dt-dot-3 {
  0%, 62% {
    background: rgba(23, 20, 26, 0.28);
    transform: scale(1);
  }
  66%, 96% {
    background: #ffd23f;
    transform: scale(1.4);
  }
  100% {
    background: rgba(23, 20, 26, 0.28);
    transform: scale(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .dt.is-demo .dt__track,
  .dt.is-demo .dt__dot--1,
  .dt.is-demo .dt__dot--2,
  .dt.is-demo .dt__dot--3 {
    animation: none !important;
  }
  .dt__viewport {
    scroll-behavior: auto;
  }
}

// 실제 동작은 <a href="#id"> + :target 만으로 끝난다(0줄) — 점을 누르면 주소창 #이 바뀌고
// 브라우저가 그 슬라이드를 스크롤 상자 안에서 화면에 맞춰 옮긴다.
// 이 3줄은 미리보기 자동 재생만 멈춘다.
document.querySelector('.dt__viewport').addEventListener('pointerdown', function () {
  document.querySelector('.dt').classList.remove('is-demo');
});

import { useRef, useState } from "react";
import type { CSSProperties } from "react";
import styles from "./DotsTarget.module.scss";

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

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };
type TrackEl = { children: { item(i: number): { scrollIntoView(opts: { behavior: string; inline: string }): void } | null } } | null;

export default function DotsTarget({ duration = 300, easing = "cubic-bezier(.2,.8,.2,1)", color = "#ffd23f" }: DotsTargetProps) {
  const [active, setActive] = useState(0);
  const track = useRef<TrackEl>(null);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  const go = (i: number) => {
    setActive(i);
    track.current?.children.item(i)?.scrollIntoView({ behavior: "smooth", inline: "start" });
  };
  return (
    <div className={styles.dt} style={vars}>
      {/* 원본은 <a href="#id"> + :target 만으로 끝난다(0줄 JS). 컴포넌트는 아이디가 겹치지 않도록
          scrollIntoView 로 같은 동작을 낸다 — 실제로 슬라이드가 스크롤 상자 안에서 움직인다 */}
      <div className={styles.viewport} ref={track as never}>
        <div className={styles.track}>
          {[1, 2, 3].map((n) => (
            <div key={n} className={`${styles.slide} ${styles["slide" + n]}`} />
          ))}
        </div>
      </div>
      <nav className={styles.dots}>
        {[0, 1, 2].map((i) => (
          <button
            key={i}
            type="button"
            aria-label={`슬라이드 ${i + 1}`}
            className={`${styles.dot} ${i === active ? styles.isActive : ""}`}
            onClick={() => go(i)}
          />
        ))}
      </nav>
    </div>
  );
}

<main class="stage">
  <div class="tm is-demo">
    <div class="tm__viewport">
      <div class="tm__track">
        <section id="tm-s1" class="tm__slide tm__slide--1"></section>
        <section id="tm-s2" class="tm__slide tm__slide--2"></section>
        <section id="tm-s3" class="tm__slide tm__slide--3"></section>
        <section class="tm__slide tm__slide--1" aria-hidden="true"></section>
      </div>
    </div>
    <nav class="tm__thumbs">
      <a href="#tm-s1" class="tm__thumb tm__thumb--1" aria-label="슬라이드 1 썸네일"></a>
      <a href="#tm-s2" class="tm__thumb tm__thumb--2" aria-label="슬라이드 2 썸네일"></a>
      <a href="#tm-s3" class="tm__thumb tm__thumb--3" aria-label="슬라이드 3 썸네일"></a>
    </nav>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-spring;
$color: $subject-blue;

@include stage($stage-paper);

.tm { width: min(260px, 70vw); }

// ── 실제 동작: 큰 슬라이드 + 진짜 썸네일 이미지 줄, 둘 다 <a href="#id"> + :target (0줄 JS) ──
.tm__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  border-radius: $r-card;
  scrollbar-width: none;
  &::-webkit-scrollbar { display: none; }
}
.tm__track { display: flex; width: max-content; }
.tm__slide {
  flex: 0 0 min(260px, 70vw);
  aspect-ratio: 16 / 9;
  scroll-snap-align: start;
}
.tm__slide--1 { background: linear-gradient(135deg, $color, #d6ddeb); }
.tm__slide--2 { background: linear-gradient(135deg, $stage-orange, #ebdbd6); }
.tm__slide--3 { background: linear-gradient(135deg, #c2ae82, $stage-yellow); }

.tm__thumbs {
  display: flex;
  justify-content: center;
  gap: $sp-2;
  margin-top: $sp-3;
}
.tm__thumb {
  flex: 0 0 28px;
  aspect-ratio: 1 / 1;
  box-sizing: border-box;
  border-radius: $r-sm;
  border: 3px solid transparent;
  transition: border-color $duration $easing;
}
.tm__thumb--1 { background: linear-gradient(135deg, $color, #d6ddeb); }
.tm__thumb--2 { background: linear-gradient(135deg, $stage-orange, #ebdbd6); }
.tm__thumb--3 { background: linear-gradient(135deg, #c2ae82, $stage-yellow); }
// 각 슬라이드가 :target 이면 :has() 로 같은 색의 썸네일에만 테두리를 켠다
.tm:has(#tm-s1:target) .tm__thumb--1,
.tm:has(#tm-s2:target) .tm__thumb--2,
.tm:has(#tm-s3:target) .tm__thumb--3 {
  border-color: $subject-ink;
}

// ── 데모 루프: 큰 슬라이드와 썸네일 테두리가 미리보기에서 함께 순환한다 ──
// 트랙 끝에는 1번의 복제본(aria-hidden)이 한 장 더 — 그곳까지 정상 속도로 가고 100%→0% 점프는
// 복제본=1번이라 안 보인다 (텔레포트 금지). % 는 트랙(max-content=슬라이드 4장) 기준이라 한 칸 = -25%
.tm.is-demo .tm__track { animation: tm-track $dur-loop $easing infinite; }
.tm.is-demo .tm__thumb--1 { animation: tm-thumb-1 $dur-loop $easing infinite; }
.tm.is-demo .tm__thumb--2 { animation: tm-thumb-2 $dur-loop $easing infinite; }
.tm.is-demo .tm__thumb--3 { animation: tm-thumb-3 $dur-loop $easing infinite; }
@keyframes tm-track {
  0%, 8%    { transform: translateX(0); }
  31%, 39%  { transform: translateX(-25%); }
  62%, 70%  { transform: translateX(-50%); }
  92%, 100% { transform: translateX(-75%); }
}
// 썸네일 1번도 루프 끝(92~100%, 복제본=1번이 보이는 구간)에 다시 켜진다 — 경계에서 테두리가 순간이동하지 않는다
@keyframes tm-thumb-1 { 0%, 4% { border-color: $subject-ink; } 29%, 88% { border-color: transparent; } 92%, 100% { border-color: $subject-ink; } }
@keyframes tm-thumb-2 { 0%, 29% { border-color: transparent; } 33%, 62% { border-color: $subject-ink; } 66%, 100% { border-color: transparent; } }
@keyframes tm-thumb-3 { 0%, 62% { border-color: transparent; } 66%, 96% { border-color: $subject-ink; } 100% { border-color: transparent; } }

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .tm.is-demo .tm__track,
  .tm.is-demo .tm__thumb--1,
  .tm.is-demo .tm__thumb--2,
  .tm.is-demo .tm__thumb--3 { animation: none !important; }
  .tm__viewport { scroll-behavior: auto; }
}

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);
}

.tm {
  width: min(260px, 70vw);
}

.tm__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  border-radius: 16px;
  scrollbar-width: none;
}
.tm__viewport::-webkit-scrollbar {
  display: none;
}

.tm__track {
  display: flex;
  width: max-content;
}

.tm__slide {
  flex: 0 0 min(260px, 70vw);
  aspect-ratio: 16/9;
  scroll-snap-align: start;
}

.tm__slide--1 {
  background: linear-gradient(135deg, #2f6df6, #d6ddeb);
}

.tm__slide--2 {
  background: linear-gradient(135deg, #ff4d1f, #ebdbd6);
}

.tm__slide--3 {
  background: linear-gradient(135deg, #c2ae82, #ffd23f);
}

.tm__thumbs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}

.tm__thumb {
  flex: 0 0 28px;
  aspect-ratio: 1/1;
  box-sizing: border-box;
  border-radius: 8px;
  border: 3px solid transparent;
  transition: border-color 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tm__thumb--1 {
  background: linear-gradient(135deg, #2f6df6, #d6ddeb);
}

.tm__thumb--2 {
  background: linear-gradient(135deg, #ff4d1f, #ebdbd6);
}

.tm__thumb--3 {
  background: linear-gradient(135deg, #c2ae82, #ffd23f);
}

.tm:has(#tm-s1:target) .tm__thumb--1,
.tm:has(#tm-s2:target) .tm__thumb--2,
.tm:has(#tm-s3:target) .tm__thumb--3 {
  border-color: #17141a;
}

.tm.is-demo .tm__track {
  animation: tm-track 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.tm.is-demo .tm__thumb--1 {
  animation: tm-thumb-1 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.tm.is-demo .tm__thumb--2 {
  animation: tm-thumb-2 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.tm.is-demo .tm__thumb--3 {
  animation: tm-thumb-3 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes tm-track {
  0%, 8% {
    transform: translateX(0);
  }
  31%, 39% {
    transform: translateX(-25%);
  }
  62%, 70% {
    transform: translateX(-50%);
  }
  92%, 100% {
    transform: translateX(-75%);
  }
}
@keyframes tm-thumb-1 {
  0%, 4% {
    border-color: #17141a;
  }
  29%, 88% {
    border-color: transparent;
  }
  92%, 100% {
    border-color: #17141a;
  }
}
@keyframes tm-thumb-2 {
  0%, 29% {
    border-color: transparent;
  }
  33%, 62% {
    border-color: #17141a;
  }
  66%, 100% {
    border-color: transparent;
  }
}
@keyframes tm-thumb-3 {
  0%, 62% {
    border-color: transparent;
  }
  66%, 96% {
    border-color: #17141a;
  }
  100% {
    border-color: transparent;
  }
}
@media (prefers-reduced-motion: reduce) {
  .tm.is-demo .tm__track,
  .tm.is-demo .tm__thumb--1,
  .tm.is-demo .tm__thumb--2,
  .tm.is-demo .tm__thumb--3 {
    animation: none !important;
  }
  .tm__viewport {
    scroll-behavior: auto;
  }
}

// 실제 동작은 큰 슬라이드·작은 썸네일 둘 다 앵커 링크 + :target 만으로 끝난다(0줄 JS).
// 이 3줄은 미리보기 자동 재생만 멈춘다.
document.querySelector('.tm__viewport').addEventListener('pointerdown', function () {
  document.querySelector('.tm').classList.remove('is-demo');
});

import { useRef, useState } from "react";
import type { CSSProperties } from "react";
import styles from "./ThumbnailSnap.module.scss";

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

type Vars = CSSProperties & { "--duration"?: string; "--easing"?: string; "--color"?: string };
type TrackEl = { children: { item(i: number): { scrollIntoView(opts: { behavior: string; inline: string }): void } | null } } | null;

export default function ThumbnailSnap({ duration = 300, easing = "cubic-bezier(.2,.8,.2,1)", color = "#2f6df6" }: ThumbnailSnapProps) {
  const [active, setActive] = useState(0);
  const track = useRef<TrackEl>(null);
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  const go = (i: number) => {
    setActive(i);
    track.current?.children.item(i)?.scrollIntoView({ behavior: "smooth", inline: "start" });
  };
  return (
    <div className={styles.tm} style={vars}>
      {/* 원본은 큰 슬라이드·썸네일 둘 다 <a href="#id"> + :target 만으로 끝난다(0줄 JS).
          컴포넌트는 아이디 충돌을 피하려 scrollIntoView 로 같은 동작을 낸다 */}
      <div className={styles.viewport} ref={track as never}>
        <div className={styles.track}>
          {[1, 2, 3].map((n) => (
            <div key={n} className={`${styles.slide} ${styles["slide" + n]}`} />
          ))}
        </div>
      </div>
      <nav className={styles.thumbs}>
        {[0, 1, 2].map((i) => (
          <button
            key={i}
            type="button"
            aria-label={`슬라이드 ${i + 1} 썸네일`}
            className={`${styles.thumb} ${styles["thumb" + (i + 1)]} ${i === active ? styles.isActive : ""}`}
            onClick={() => go(i)}
          />
        ))}
      </nav>
    </div>
  );
}

<main class="stage">
  <div class="vs is-demo">
    <div class="vs__viewport">
      <div class="vs__track">
        <section class="vs__slide vs__slide--1"><span class="vs__cap">01</span></section>
        <section class="vs__slide vs__slide--2"><span class="vs__cap">02</span></section>
        <section class="vs__slide vs__slide--3"><span class="vs__cap">03</span></section>
        <section class="vs__slide vs__slide--1" aria-hidden="true"><span class="vs__cap">01</span></section>
      </div>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-spring;
$color: $stage-orange;

@include stage($stage-ink);

.vs { width: min(180px, 50vw); height: 150px; border-radius: $r-card; overflow: hidden; }

// ── 실제 동작: 가로가 아니라 세로로 overflow-y:auto + scroll-snap-type: y (0줄 JS) ──
.vs__viewport {
  height: 100%;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
  &::-webkit-scrollbar { display: none; }
}
.vs__track { display: flex; flex-direction: column; height: max-content; }
.vs__slide {
  flex: 0 0 150px;
  width: 100%;
  scroll-snap-align: start;
  display: grid; place-items: end start;
  box-sizing: border-box;
}
.vs__slide--1 { background: linear-gradient(160deg, $subject-blue, #d6ddeb); }
.vs__slide--2 { background: linear-gradient(160deg, $color, #ebdbd6); }
.vs__slide--3 { background: linear-gradient(160deg, #c2ae82, $stage-yellow); }
.vs__cap {
  margin: $sp-3;
  padding: $sp-1 $sp-3;
  border-radius: $r-pill;
  background: rgba(255, 255, 255, .85);
  color: $subject-ink;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
}

// ── 데모 루프: 클릭·드래그 전까지 한 칸씩 스스로 아래로 넘어간다 ──
// 트랙 끝에는 1번의 복제본(aria-hidden)이 한 장 더 — 그곳까지 정상 속도로 가고
// 100%→0% 점프는 복제본이 1번과 같아 안 보인다 (끝→처음 텔레포트 금지)
.vs.is-demo .vs__track { animation: vs-loop $dur-loop $easing infinite; }
@keyframes vs-loop {
  0%, 8%    { transform: translateY(0px); }
  31%, 39%  { transform: translateY(-150px); }
  62%, 70%  { transform: translateY(-300px); }
  92%, 100% { transform: translateY(-450px); }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .vs.is-demo .vs__track { animation: none !important; }
  .vs__viewport { scroll-behavior: auto; }
}

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);
}

.vs {
  width: min(180px, 50vw);
  height: 150px;
  border-radius: 16px;
  overflow: hidden;
}

.vs__viewport {
  height: 100%;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
}
.vs__viewport::-webkit-scrollbar {
  display: none;
}

.vs__track {
  display: flex;
  flex-direction: column;
  height: max-content;
}

.vs__slide {
  flex: 0 0 150px;
  width: 100%;
  scroll-snap-align: start;
  display: grid;
  place-items: end start;
  box-sizing: border-box;
}

.vs__slide--1 {
  background: linear-gradient(160deg, #2f6df6, #d6ddeb);
}

.vs__slide--2 {
  background: linear-gradient(160deg, #ff4d1f, #ebdbd6);
}

.vs__slide--3 {
  background: linear-gradient(160deg, #c2ae82, #ffd23f);
}

.vs__cap {
  margin: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  color: #17141a;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  font-family: inherit;
}

.vs.is-demo .vs__track {
  animation: vs-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes vs-loop {
  0%, 8% {
    transform: translateY(0px);
  }
  31%, 39% {
    transform: translateY(-150px);
  }
  62%, 70% {
    transform: translateY(-300px);
  }
  92%, 100% {
    transform: translateY(-450px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .vs.is-demo .vs__track {
    animation: none !important;
  }
  .vs__viewport {
    scroll-behavior: auto;
  }
}

// 실제 동작은 overflow-y:auto + scroll-snap-type: y 만으로 끝난다(0줄).
// 이 3줄은 미리보기 자동 재생만 멈춘다.
document.querySelector('.vs__viewport').addEventListener('pointerdown', function () {
  document.querySelector('.vs').classList.remove('is-demo');
});

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

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

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

export default function VerticalSnap({ duration = 300, easing = "cubic-bezier(.2,.8,.2,1)", color = "#ff4d1f" }: VerticalSnapProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.vs} style={vars}>
      {/* 가로가 아니라 세로로 overflow-y:auto + scroll-snap-type: y 만으로 끝난다 — 0줄 JS */}
      <div className={styles.viewport}>
        <div className={styles.track}>
          {[1, 2, 3].map((n) => (
            <div key={n} className={`${styles.slide} ${styles["slide" + n]}`} />
          ))}
        </div>
      </div>
    </div>
  );
}

<main class="stage">
  <div class="cf is-demo">
    <div class="cf__viewport">
      <div class="cf__track">
        <div class="cf__slide cf__slide--1"></div>
        <div class="cf__slide cf__slide--2"></div>
        <div class="cf__slide cf__slide--3"></div>
        <div class="cf__slide cf__slide--4"></div>
        <div class="cf__slide cf__slide--5"></div>
      </div>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-spring;
$color: $stage-orange;

@include stage($stage-yellow);

.cf { width: min(360px, 88vw); }

// ── 실제 동작: 실제 가로 스크롤 + scroll-snap-align: center. 라디오 없음 (0줄 JS) ──
.cf__viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  perspective: 640px;
  padding: 0 40%; // 첫·끝 카드도 가운데까지 스크롤될 여백
  box-sizing: border-box;
  scrollbar-width: none;
  &::-webkit-scrollbar { display: none; }
}
.cf__track {
  display: flex;
  align-items: center;
  width: max-content;
  transform-style: preserve-3d;
}
.cf__slide {
  flex: 0 0 min(120px, 30vw);
  aspect-ratio: 3 / 4;
  margin-right: $sp-4;
  border-radius: $r-card;
  scroll-snap-align: center;
  transform-style: preserve-3d;
  &:last-child { margin-right: 0; }
}
// 카드는 자기 순서에서부터 이미 비스듬하다 — 가운데(3번)만 정면, 양옆은 미리 기운 채로 놓여 있다
.cf__slide--1, .cf__slide--5 { transform: rotateY(38deg) scale(.72); opacity: .55; }
.cf__slide--2, .cf__slide--4 { transform: rotateY(24deg) scale(.86); opacity: .8; }
.cf__slide--3 { transform: rotateY(0deg) scale(1); }
.cf__slide--4 { transform: rotateY(-24deg) scale(.86); opacity: .8; }
.cf__slide--5 { transform: rotateY(-38deg) scale(.72); opacity: .55; }
.cf__slide--1 { background: linear-gradient(160deg, $subject-blue, #d6ddeb); }
.cf__slide--2 { background: linear-gradient(160deg, $color, #ebdbd6); }
.cf__slide--3 { background: linear-gradient(160deg, #c2ae82, $stage-yellow); }
.cf__slide--4 { background: linear-gradient(160deg, $subject-ink, #4a3f5c); }
.cf__slide--5 { background: linear-gradient(160deg, $subject-blue, $color); }

// ── 데모 루프: 클릭·드래그 전까지 트랙이 스스로 흐르며 가운데 카드가 바뀐다 ──
.cf.is-demo .cf__track { animation: cf-loop $dur-loop $easing infinite; }
@keyframes cf-loop {
  0%, 8%   { transform: translateX(0px); }
  50%, 58% { transform: translateX(-140px); }
  100%     { transform: translateX(0px); }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .cf.is-demo .cf__track { animation: none !important; }
  .cf__viewport { scroll-behavior: auto; }
}

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);
}

.cf {
  width: min(360px, 88vw);
}

.cf__viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  perspective: 640px;
  padding: 0 40%;
  box-sizing: border-box;
  scrollbar-width: none;
}
.cf__viewport::-webkit-scrollbar {
  display: none;
}

.cf__track {
  display: flex;
  align-items: center;
  width: max-content;
  transform-style: preserve-3d;
}

.cf__slide {
  flex: 0 0 min(120px, 30vw);
  aspect-ratio: 3/4;
  margin-right: 16px;
  border-radius: 16px;
  scroll-snap-align: center;
  transform-style: preserve-3d;
}
.cf__slide:last-child {
  margin-right: 0;
}

.cf__slide--1, .cf__slide--5 {
  transform: rotateY(38deg) scale(0.72);
  opacity: 0.55;
}

.cf__slide--2, .cf__slide--4 {
  transform: rotateY(24deg) scale(0.86);
  opacity: 0.8;
}

.cf__slide--3 {
  transform: rotateY(0deg) scale(1);
}

.cf__slide--4 {
  transform: rotateY(-24deg) scale(0.86);
  opacity: 0.8;
}

.cf__slide--5 {
  transform: rotateY(-38deg) scale(0.72);
  opacity: 0.55;
}

.cf__slide--1 {
  background: linear-gradient(160deg, #2f6df6, #d6ddeb);
}

.cf__slide--2 {
  background: linear-gradient(160deg, #ff4d1f, #ebdbd6);
}

.cf__slide--3 {
  background: linear-gradient(160deg, #c2ae82, #ffd23f);
}

.cf__slide--4 {
  background: linear-gradient(160deg, #17141a, #4a3f5c);
}

.cf__slide--5 {
  background: linear-gradient(160deg, #2f6df6, #ff4d1f);
}

.cf.is-demo .cf__track {
  animation: cf-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes cf-loop {
  0%, 8% {
    transform: translateX(0px);
  }
  50%, 58% {
    transform: translateX(-140px);
  }
  100% {
    transform: translateX(0px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .cf.is-demo .cf__track {
    animation: none !important;
  }
  .cf__viewport {
    scroll-behavior: auto;
  }
}

// 실제 동작은 overflow-x:auto + scroll-snap-align: center + perspective 만으로 끝난다(0줄).
// 라디오·JS 로 "몇 번이 가운데인지" 고르지 않는다 — 카드는 자기 자리에서부터 이미 기울어 있고,
// 실제 드래그·스크롤이 그 카드를 가운데로 데려온다. 이 3줄은 미리보기 자동 재생만 멈춘다.
document.querySelector('.cf__viewport').addEventListener('pointerdown', function () {
  document.querySelector('.cf').classList.remove('is-demo');
});

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

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

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

export default function CoverFlowSnap({ duration = 300, easing = "cubic-bezier(.2,.8,.2,1)", color = "#ff4d1f" }: CoverFlowSnapProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.cf} style={vars}>
      {/* 라디오도 JS 도 없다 — scroll-snap-align: center 로 실제 드래그가 카드를 가운데로 데려온다.
          카드는 자기 순서에서부터 이미 기울어 있다 (perspective + rotateY 고정값) */}
      <div className={styles.viewport}>
        <div className={styles.track}>
          {[1, 2, 3, 4, 5].map((n) => (
            <div key={n} className={`${styles.slide} ${styles["slide" + n]}`} />
          ))}
        </div>
      </div>
    </div>
  );
}

<main class="stage">
  <div class="cs">
    <div class="cs__deck">
      <div class="cs__card cs__card--1"></div>
      <div class="cs__card cs__card--2"></div>
      <div class="cs__card cs__card--3"></div>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-spring;
$color: $subject-blue;

@include stage($stage-orange);

.cs { width: min(170px, 38vw); }

// ── 실제 동작: 카드 3장이 같은 자리(grid-area: 1/1)에 겹쳐 있다. 스크롤 상자가 없다 ──
.cs__deck {
  display: grid;
  aspect-ratio: 3 / 4;
}
.cs__card {
  grid-area: 1 / 1;
  border-radius: $r-card;
  box-shadow: $shadow-raised;
  animation: cs-cycle $dur-loop $easing infinite;
}
.cs__card--1 { background: linear-gradient(160deg, $color, #d6ddeb); animation-delay: -0s; }
.cs__card--2 { background: linear-gradient(160deg, $stage-yellow, #ebe7d6); animation-delay: -.667s; }
.cs__card--3 { background: linear-gradient(160deg, $subject-ink, #4a3f5c); animation-delay: -1.333s; }

// 맨 위 카드가 옆으로 미끄러지며 빠지고, 빠진 카드는 스택 맨 뒤에서 다시 앞으로 올라온다
@keyframes cs-cycle {
  0%, 4%     { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 1; z-index: 3; }
  29%        { transform: translate(42%, 6%) scale(1) rotate(12deg); opacity: 0; z-index: 3; }
  29.1%      { transform: translate(-6%, 6%) scale(.9) rotate(-4deg); opacity: 0; z-index: 1; }
  33%, 62%   { transform: translate(-6%, 6%) scale(.9) rotate(-4deg); opacity: .85; z-index: 1; }
  66%, 96%   { transform: translate(6%, 4%) scale(.95) rotate(3deg); opacity: .92; z-index: 2; }
  100%       { transform: translate(0, 0) scale(1) rotate(0deg); opacity: 1; z-index: 3; }
}

// 자동 순환이 전부다 — 마우스를 올리면 잠깐 멈춰서 지금 카드를 편하게 본다
.cs:hover .cs__card { animation-play-state: paused; }

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .cs__card { animation: none !important; }
  .cs__card--1 { opacity: 1; z-index: 3; transform: none; }
  .cs__card--2, .cs__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: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.cs {
  width: min(170px, 38vw);
}

.cs__deck {
  display: grid;
  aspect-ratio: 3/4;
}

.cs__card {
  grid-area: 1/1;
  border-radius: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  animation: cs-cycle 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.cs__card--1 {
  background: linear-gradient(160deg, #2f6df6, #d6ddeb);
  animation-delay: -0s;
}

.cs__card--2 {
  background: linear-gradient(160deg, #ffd23f, #ebe7d6);
  animation-delay: -0.667s;
}

.cs__card--3 {
  background: linear-gradient(160deg, #17141a, #4a3f5c);
  animation-delay: -1.333s;
}

@keyframes cs-cycle {
  0%, 4% {
    transform: translate(0, 0) scale(1) rotate(0deg);
    opacity: 1;
    z-index: 3;
  }
  29% {
    transform: translate(42%, 6%) scale(1) rotate(12deg);
    opacity: 0;
    z-index: 3;
  }
  29.1% {
    transform: translate(-6%, 6%) scale(0.9) rotate(-4deg);
    opacity: 0;
    z-index: 1;
  }
  33%, 62% {
    transform: translate(-6%, 6%) scale(0.9) rotate(-4deg);
    opacity: 0.85;
    z-index: 1;
  }
  66%, 96% {
    transform: translate(6%, 4%) scale(0.95) rotate(3deg);
    opacity: 0.92;
    z-index: 2;
  }
  100% {
    transform: translate(0, 0) scale(1) rotate(0deg);
    opacity: 1;
    z-index: 3;
  }
}
.cs:hover .cs__card {
  animation-play-state: paused;
}

@media (prefers-reduced-motion: reduce) {
  .cs__card {
    animation: none !important;
  }
  .cs__card--1 {
    opacity: 1;
    z-index: 3;
    transform: none;
  }
  .cs__card--2, .cs__card--3 {
    opacity: 0;
  }
}

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

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

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

export default function StackedCardSwipe({ duration = 2000, easing = "cubic-bezier(.2,.8,.2,1)", color = "#2f6df6" }: StackedCardSwipeProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.cs} style={vars}>
      {/* 카드 3장이 같은 자리(grid-area: 1/1)에 겹쳐 있고, @keyframes 하나가 순서대로 옆으로 빠진다 — 0줄 JS */}
      <div className={styles.deck}>
        {[1, 2, 3].map((n) => (
          <div key={n} className={`${styles.card} ${styles["card" + n]}`} />
        ))}
      </div>
    </div>
  );
}

<main class="stage">
  <div class="kb">
    <div class="kb__stage">
      <div class="kb__card kb__card--1"><div class="kb__img kb__img--1"></div></div>
      <div class="kb__card kb__card--2"><div class="kb__img kb__img--2"></div></div>
      <div class="kb__card kb__card--3"><div class="kb__img kb__img--3"></div></div>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: $ease-out;
$color: $stage-orange;

@include stage($stage-paper);

.kb { width: min(360px, 80vw); }

// ── 실제 동작: 카드가 같은 자리에서 오파시티로 교차되고, 보이는 카드의 배경만 계속 확대된다 (0줄 JS) ──
.kb__stage {
  display: grid;
  aspect-ratio: 16 / 10;
  border-radius: $r-card;
  overflow: hidden;
}
.kb__card { grid-area: 1 / 1; overflow: hidden; }
.kb__img { width: 100%; height: 100%; }
.kb__img--1 { background: radial-gradient(120% 120% at 30% 20%, $subject-blue, #14264d); }
.kb__img--2 { background: radial-gradient(120% 120% at 70% 30%, $color, #4a1c0d); }
.kb__img--3 { background: radial-gradient(120% 120% at 50% 70%, #c2ae82, #3a2a05); }

.kb__card--1 { animation: kb-fade-1 $dur-loop linear infinite; }
.kb__card--2 { animation: kb-fade-2 $dur-loop linear infinite; }
.kb__card--3 { animation: kb-fade-3 $dur-loop linear infinite; }
.kb__img--1  { animation: kb-zoom-1 $dur-loop $easing infinite; }
.kb__img--2  { animation: kb-zoom-2 $dur-loop $easing infinite; }
.kb__img--3  { animation: kb-zoom-3 $dur-loop $easing infinite; }

// 교차 페이드 창을 12% 로 넓게 — 마지막→처음 순간의 팝 없이 3번 페이드아웃(88→100%)과
// 1번 페이드인(0→12%)이 릴레이로 이어진다 (끝→처음 텔레포트 금지)
@keyframes kb-fade-1 { 0% { opacity: 0; } 12%, 25% { opacity: 1; } 37%, 100% { opacity: 0; } }
@keyframes kb-fade-2 { 0%, 25% { opacity: 0; } 37%, 58% { opacity: 1; } 70%, 100% { opacity: 0; } }
@keyframes kb-fade-3 { 0%, 58% { opacity: 0; } 70%, 88% { opacity: 1; } 100% { opacity: 0; } }

// 보이는 동안에만 천천히 확대되고, 다음 차례가 오면 다시 배율 1로 되돌아가 있다 (켄번즈 줌)
@keyframes kb-zoom-1 { 0% { transform: scale(1); } 29% { transform: scale(1.16); } 29.1%, 100% { transform: scale(1); } }
@keyframes kb-zoom-2 { 0%, 33% { transform: scale(1); } 62% { transform: scale(1.16); } 62.1%, 100% { transform: scale(1); } }
@keyframes kb-zoom-3 { 0%, 66% { transform: scale(1); } 96% { transform: scale(1.16); } }

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

.kb {
  width: min(360px, 80vw);
}

.kb__stage {
  display: grid;
  aspect-ratio: 16/10;
  border-radius: 16px;
  overflow: hidden;
}

.kb__card {
  grid-area: 1/1;
  overflow: hidden;
}

.kb__img {
  width: 100%;
  height: 100%;
}

.kb__img--1 {
  background: radial-gradient(120% 120% at 30% 20%, #2f6df6, #14264d);
}

.kb__img--2 {
  background: radial-gradient(120% 120% at 70% 30%, #ff4d1f, #4a1c0d);
}

.kb__img--3 {
  background: radial-gradient(120% 120% at 50% 70%, #c2ae82, #3a2a05);
}

.kb__card--1 {
  animation: kb-fade-1 2s linear infinite;
}

.kb__card--2 {
  animation: kb-fade-2 2s linear infinite;
}

.kb__card--3 {
  animation: kb-fade-3 2s linear infinite;
}

.kb__img--1 {
  animation: kb-zoom-1 2s ease-out infinite;
}

.kb__img--2 {
  animation: kb-zoom-2 2s ease-out infinite;
}

.kb__img--3 {
  animation: kb-zoom-3 2s ease-out infinite;
}

@keyframes kb-fade-1 {
  0% {
    opacity: 0;
  }
  12%, 25% {
    opacity: 1;
  }
  37%, 100% {
    opacity: 0;
  }
}
@keyframes kb-fade-2 {
  0%, 25% {
    opacity: 0;
  }
  37%, 58% {
    opacity: 1;
  }
  70%, 100% {
    opacity: 0;
  }
}
@keyframes kb-fade-3 {
  0%, 58% {
    opacity: 0;
  }
  70%, 88% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@keyframes kb-zoom-1 {
  0% {
    transform: scale(1);
  }
  29% {
    transform: scale(1.16);
  }
  29.1%, 100% {
    transform: scale(1);
  }
}
@keyframes kb-zoom-2 {
  0%, 33% {
    transform: scale(1);
  }
  62% {
    transform: scale(1.16);
  }
  62.1%, 100% {
    transform: scale(1);
  }
}
@keyframes kb-zoom-3 {
  0%, 66% {
    transform: scale(1);
  }
  96% {
    transform: scale(1.16);
  }
}
@media (prefers-reduced-motion: reduce) {
  .kb__card, .kb__img {
    animation: none !important;
  }
  .kb__card--1 {
    opacity: 1;
  }
  .kb__card--2, .kb__card--3 {
    opacity: 0;
  }
}

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

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

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

export default function AutoplayKenburns({ duration = 6000, easing = "ease-out", color = "#ff4d1f" }: AutoplayKenburnsProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.kb} style={vars}>
      {/* 카드가 같은 자리에서 오파시티로 교차되고, 보이는 카드의 배경만 계속 확대된다 — 0줄 JS */}
      <div className={styles.stageBox}>
        {[1, 2, 3].map((n) => (
          <div key={n} className={`${styles.card} ${styles["card" + n]}`}>
            <div className={`${styles.img} ${styles["img" + n]}`} />
          </div>
        ))}
      </div>
    </div>
  );
}

<main class="stage">
  <div class="sp is-demo">
    <div class="sp__bar"><div class="sp__fill"></div></div>
    <div class="sp__viewport">
      <div class="sp__track">
        <div class="sp__slide sp__slide--1"></div>
        <div class="sp__slide sp__slide--2"></div>
        <div class="sp__slide sp__slide--3"></div>
        <div class="sp__slide sp__slide--4"></div>
        <div class="sp__slide sp__slide--1" aria-hidden="true"></div>
        <div class="sp__slide sp__slide--2" aria-hidden="true"></div>
      </div>
    </div>
  </div>
</main>

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

// ── 변수 3개 ──────────────────────────────────────────
$duration: $dur-base;
$easing: linear;
$color: $subject-blue;

@include stage($stage-ink);

.sp {
  width: min(360px, 88vw);
  // 진행 바(.sp__bar)와 스크롤 상자(.sp__viewport)는 형제라, 공용 이름을 이 공통 조상에서 열어 둔다
  timeline-scope: --sp-progress;
}

.sp__bar {
  height: 6px;
  border-radius: $r-pill;
  background: rgba(255, 255, 255, .18);
  overflow: hidden;
  margin-bottom: $sp-3;
}
.sp__fill {
  height: 100%;
  width: 0%;
  border-radius: $r-pill;
  background: $color;
  // ── 실제 동작: 실제 가로 스크롤 위치를 이름 붙은 스크롤 타임라인으로 그대로 읽어 폭을 채운다 (0줄 JS) ──
  animation-name: sp-fill;
  animation-timeline: --sp-progress;
  animation-fill-mode: both;
}
@keyframes sp-fill {
  from { width: 0%; }
  to   { width: 100%; }
}

.sp__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-timeline: --sp-progress inline;
  border-radius: $r-card;
  scrollbar-width: none;
  &::-webkit-scrollbar { display: none; }
}
.sp__track { display: flex; width: max-content; }
.sp__slide {
  flex: 0 0 190px;
  aspect-ratio: 4 / 3;
  scroll-snap-align: start;
  margin-right: $sp-3;
  border-radius: $r-card;
  &:last-child { margin-right: 0; }
}
.sp__slide--1 { background: linear-gradient(135deg, $color, #d6ddeb); }
.sp__slide--2 { background: linear-gradient(135deg, $stage-orange, #ebdbd6); }
.sp__slide--3 { background: linear-gradient(135deg, #c2ae82, $stage-yellow); }
.sp__slide--4 { background: linear-gradient(135deg, $subject-ink, #4a3f5c); }

// ── 데모 루프: 트랙만 미리보기로 스스로 넘어간다. 진행 바는 실제 스크롤 타임라인이 그대로 그린다 ──
// 트랙 끝에는 1번의 복제본(aria-hidden)이 한 장 더 — 그곳까지 정상 속도로 가고
// 100%→0% 점프는 복제본이 1번과 같아 안 보인다 (끝→처음 텔레포트 금지)
.sp.is-demo .sp__track { animation: sp-loop $dur-loop $ease-spring infinite; }
@keyframes sp-loop {
  0%, 8%    { transform: translateX(0px); }
  23%, 31%  { transform: translateX(-202px); }
  46%, 54%  { transform: translateX(-404px); }
  69%, 77%  { transform: translateX(-606px); }
  92%, 100% { transform: translateX(-808px); }
}

// ── 접근성 ──────────────────────────────────────────
@media (prefers-reduced-motion: reduce) {
  .sp.is-demo .sp__track { animation: none !important; }
  .sp__viewport { scroll-behavior: auto; }
}

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);
}

.sp {
  width: min(360px, 88vw);
  timeline-scope: --sp-progress;
}

.sp__bar {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  overflow: hidden;
  margin-bottom: 12px;
}

.sp__fill {
  height: 100%;
  width: 0%;
  border-radius: 999px;
  background: #2f6df6;
  animation-name: sp-fill;
  animation-timeline: --sp-progress;
  animation-fill-mode: both;
}

@keyframes sp-fill {
  from {
    width: 0%;
  }
  to {
    width: 100%;
  }
}
.sp__viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-timeline: --sp-progress inline;
  border-radius: 16px;
  scrollbar-width: none;
}
.sp__viewport::-webkit-scrollbar {
  display: none;
}

.sp__track {
  display: flex;
  width: max-content;
}

.sp__slide {
  flex: 0 0 190px;
  aspect-ratio: 4/3;
  scroll-snap-align: start;
  margin-right: 12px;
  border-radius: 16px;
}
.sp__slide:last-child {
  margin-right: 0;
}

.sp__slide--1 {
  background: linear-gradient(135deg, #2f6df6, #d6ddeb);
}

.sp__slide--2 {
  background: linear-gradient(135deg, #ff4d1f, #ebdbd6);
}

.sp__slide--3 {
  background: linear-gradient(135deg, #c2ae82, #ffd23f);
}

.sp__slide--4 {
  background: linear-gradient(135deg, #17141a, #4a3f5c);
}

.sp.is-demo .sp__track {
  animation: sp-loop 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes sp-loop {
  0%, 8% {
    transform: translateX(0px);
  }
  23%, 31% {
    transform: translateX(-202px);
  }
  46%, 54% {
    transform: translateX(-404px);
  }
  69%, 77% {
    transform: translateX(-606px);
  }
  92%, 100% {
    transform: translateX(-808px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .sp.is-demo .sp__track {
    animation: none !important;
  }
  .sp__viewport {
    scroll-behavior: auto;
  }
}

// 진행 바(.sp__fill)는 라디오도 JS 도 없이 animation-timeline 으로 실제 스크롤 위치를 그대로 읽는다(0줄).
// 슬라이드 트랙만 클릭·드래그 전까지 미리보기로 스스로 넘어간다 — 실제 스크롤은 그대로 살아있다.
document.querySelector('.sp__viewport').addEventListener('pointerdown', function () {
  document.querySelector('.sp').classList.remove('is-demo');
});

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

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

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

export default function ScrollTimelineProgress({ duration = 300, easing = "linear", color = "#2f6df6" }: ScrollTimelineProgressProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <div className={styles.sp} style={vars}>
      {/* 진행 바는 라디오도 JS 도 없이 animation-timeline 으로 실제 스크롤 위치를 그대로 읽는다 — 0줄 JS */}
      <div className={styles.bar}><div className={styles.fill} /></div>
      <div className={styles.viewport}>
        <div className={styles.track}>
          {[1, 2, 3, 4].map((n) => (
            <div key={n} className={`${styles.slide} ${styles["slide" + n]}`} />
          ))}
        </div>
      </div>
    </div>
  );
}