02Zone-based 3D tilt (CSS only)

<main class="stage">
  <article class="card is-demo" tabindex="0">
    <div class="card__zones" aria-hidden="true">
      <span class="zone zone--tl"></span>
      <span class="zone zone--tr"></span>
      <span class="zone zone--bl"></span>
      <span class="zone zone--br"></span>
    </div>
    <div class="card__inner">
      <h3 class="card__title">New release</h3>
      <p class="card__meta">View Q3 roadmap</p>
    </div>
  </article>
</main>

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

$duration: $dur-base;                                  // 기울어지는 시간
$easing: $ease-spring;
$color: $subject-cream;                                 // 안쪽 패널 배경

@include stage($stage-yellow);
.stage { padding: clamp(8px, 2.4vw, 16px); }

.card {
  position: relative;
  width: min(150px, 48vw);
  aspect-ratio: 4 / 3;
  perspective: 600px;
  outline: none;
  cursor: pointer;
}
.card__zones {
  position: absolute; inset: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  border-radius: $r-card;
  overflow: hidden;
}
.zone { display: block; }
.card__inner {
  height: 100%;
  padding: $sp-3;
  box-sizing: border-box;
  border-radius: $r-card;
  background: $color;
  box-shadow: $shadow-press;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transform-style: preserve-3d;
  transition: transform $duration $easing;
}
.card__title { margin: 0 0 $sp-1; font-weight: 700; font-size: clamp(11px, 3.2vw, 13px); line-height: 1.3; font-family: inherit; color: $stage-ink; }
.card__meta { margin: 0; font-weight: 500; font-size: clamp(10px, 2.8vw, 11px); line-height: 1.3; font-family: inherit; color: rgba($stage-ink, .65); }

// 구역 4개 중 어디에 커서가 있는지에 따라 :has() 가 다른 기울기를 고른다 — JS 좌표 추적이 없다
.card:has(.zone--tl:hover) .card__inner,
.card:focus-visible .card__inner { transform: rotateX(8deg) rotateY(-10deg); }
.card:has(.zone--tr:hover) .card__inner { transform: rotateX(8deg) rotateY(10deg); }
.card:has(.zone--bl:hover) .card__inner { transform: rotateX(-8deg) rotateY(-10deg); }
.card:has(.zone--br:hover) .card__inner { transform: rotateX(-8deg) rotateY(10deg); }

.card.is-demo .card__inner { animation: tilt-loop $dur-loop $easing infinite; }
@keyframes tilt-loop {
  0%, 10%   { transform: rotateX(0) rotateY(0); }
  25%       { transform: rotateX(8deg) rotateY(-10deg); }
  50%       { transform: rotateX(8deg) rotateY(10deg); }
  75%       { transform: rotateX(-8deg) rotateY(-10deg); }
  90%, 100% { transform: rotateX(0) rotateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .card__inner { transition: none; }
  .card.is-demo .card__inner { animation: none; transform: 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);
}

.stage {
  padding: clamp(8px, 2.4vw, 16px);
}

.card {
  position: relative;
  width: min(150px, 48vw);
  aspect-ratio: 4/3;
  perspective: 600px;
  outline: none;
  cursor: pointer;
}

.card__zones {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  border-radius: 16px;
  overflow: hidden;
}

.zone {
  display: block;
}

.card__inner {
  height: 100%;
  padding: 12px;
  box-sizing: border-box;
  border-radius: 16px;
  background: #fff7e6;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  display: flex;
  flex-direction: column;
  justify-content: center;
  transform-style: preserve-3d;
  transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.card__title {
  margin: 0 0 4px;
  font-weight: 700;
  font-size: clamp(11px, 3.2vw, 13px);
  line-height: 1.3;
  font-family: inherit;
  color: #17141a;
}

.card__meta {
  margin: 0;
  font-weight: 500;
  font-size: clamp(10px, 2.8vw, 11px);
  line-height: 1.3;
  font-family: inherit;
  color: rgba(23, 20, 26, 0.65);
}

.card:has(.zone--tl:hover) .card__inner,
.card:focus-visible .card__inner {
  transform: rotateX(8deg) rotateY(-10deg);
}

.card:has(.zone--tr:hover) .card__inner {
  transform: rotateX(8deg) rotateY(10deg);
}

.card:has(.zone--bl:hover) .card__inner {
  transform: rotateX(-8deg) rotateY(-10deg);
}

.card:has(.zone--br:hover) .card__inner {
  transform: rotateX(-8deg) rotateY(10deg);
}

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

@keyframes tilt-loop {
  0%, 10% {
    transform: rotateX(0) rotateY(0);
  }
  25% {
    transform: rotateX(8deg) rotateY(-10deg);
  }
  50% {
    transform: rotateX(8deg) rotateY(10deg);
  }
  75% {
    transform: rotateX(-8deg) rotateY(-10deg);
  }
  90%, 100% {
    transform: rotateX(0) rotateY(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .card__inner {
    transition: none;
  }
  .card.is-demo .card__inner {
    animation: none;
    transform: none;
  }
}

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

export type TiltZonesCardProps = {
  title: string;
  meta: string;
  /** 기울어지는 시간 (기본 300ms) */
  duration?: number;
  easing?: string;
  /** 안쪽 패널 배경 */
  color?: string;
};

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

/** 구역 4개 중 마우스가 올라간 구역에 따라 :has() 가 기울기를 고른다 — JS 좌표 추적이 없다 */
export default function TiltZonesCard({
  title,
  meta,
  duration = 300,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#fff7e6",
}: TiltZonesCardProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <article className={styles.card} style={vars} tabIndex={0}>
      <div className={styles.zones} aria-hidden="true">
        <span className={`${styles.zone} ${styles.zoneTl}`} />
        <span className={`${styles.zone} ${styles.zoneTr}`} />
        <span className={`${styles.zone} ${styles.zoneBl}`} />
        <span className={`${styles.zone} ${styles.zoneBr}`} />
      </div>
      <div className={styles.inner}>
        <h3 className={styles.title}>{title}</h3>
        <p className={styles.meta}>{meta}</p>
      </div>
    </article>
  );
}