01Even 2-column grid

<main class="stage">
  <ul class="gallery is-demo" aria-label="Photo gallery">
    <li class="tile" tabindex="0"></li>
    <li class="tile" tabindex="0"></li>
    <li class="tile" tabindex="0"></li>
    <li class="tile" tabindex="0"></li>
  </ul>
</main>

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

$duration: $dur-quick;                                 // 타일이 뜨는 시간
$easing: $ease-out;
$color: $subject-blue;                                  // 타일 그러데이션

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

.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: $sp-2;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 188px;
  max-width: 100%;
}
.tile {
  aspect-ratio: 4 / 3;
  border-radius: $r-sm;
  outline: none;
  cursor: pointer;
  box-shadow: $shadow-press;
  transition: transform $duration $easing, box-shadow $duration $easing;
}
.tile:nth-child(1) { background: linear-gradient(155deg, $color 0%, $stage-ink 100%); }
.tile:nth-child(2) { background: linear-gradient(205deg, $subject-cream 0%, $color 100%); }
.tile:nth-child(3) { background: linear-gradient(115deg, $color 0%, $subject-cream 60%); }
.tile:nth-child(4) { background: linear-gradient(250deg, $stage-ink 0%, $color 100%); }

.tile:hover, .tile:focus-visible, .tile:active {
  transform: translateY(-4px) scale(1.03);
  box-shadow: $shadow-raised;
}

.gallery.is-demo .tile { animation: lift-loop $dur-loop $easing infinite; }
.gallery.is-demo .tile:nth-child(2) { animation-delay: -0.5s; }
.gallery.is-demo .tile:nth-child(3) { animation-delay: -1.0s; }
.gallery.is-demo .tile:nth-child(4) { animation-delay: -1.5s; }

@keyframes lift-loop {
  0%, 10%   { transform: translateY(0) scale(1); box-shadow: $shadow-press; }
  25%, 35%  { transform: translateY(-4px) scale(1.03); box-shadow: $shadow-raised; }
  50%, 100% { transform: translateY(0) scale(1); box-shadow: $shadow-press; }
}

@media (hover: none) {
  .tile:active { transform: translateY(-4px) scale(1.03); box-shadow: $shadow-raised; }
}
@media (prefers-reduced-motion: reduce) {
  .tile { transition: none; }
  .gallery.is-demo .tile { animation: none; }
}

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);
}

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

.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 188px;
  max-width: 100%;
}

.tile {
  aspect-ratio: 4/3;
  border-radius: 8px;
  outline: none;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  transition: transform 220ms ease-out, box-shadow 220ms ease-out;
}

.tile:nth-child(1) {
  background: linear-gradient(155deg, #2f6df6 0%, #17141a 100%);
}

.tile:nth-child(2) {
  background: linear-gradient(205deg, #fff7e6 0%, #2f6df6 100%);
}

.tile:nth-child(3) {
  background: linear-gradient(115deg, #2f6df6 0%, #fff7e6 60%);
}

.tile:nth-child(4) {
  background: linear-gradient(250deg, #17141a 0%, #2f6df6 100%);
}

.tile:hover, .tile:focus-visible, .tile:active {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.gallery.is-demo .tile {
  animation: lift-loop 2s ease-out infinite;
}

.gallery.is-demo .tile:nth-child(2) {
  animation-delay: -0.5s;
}

.gallery.is-demo .tile:nth-child(3) {
  animation-delay: -1s;
}

.gallery.is-demo .tile:nth-child(4) {
  animation-delay: -1.5s;
}

@keyframes lift-loop {
  0%, 10% {
    transform: translateY(0) scale(1);
    box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  }
  25%, 35% {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  }
  50%, 100% {
    transform: translateY(0) scale(1);
    box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  }
}
@media (hover: none) {
  .tile:active {
    transform: translateY(-4px) scale(1.03);
    box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  }
}
@media (prefers-reduced-motion: reduce) {
  .tile {
    transition: none;
  }
  .gallery.is-demo .tile {
    animation: none;
  }
}

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

export type TwoColGalleryProps = {
  /** 타일이 뜨는 시간 (기본 220ms) */
  duration?: number;
  easing?: string;
  /** 타일 그러데이션 색 */
  color?: string;
};

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

/** 사진 4장을 2×2 칸에 나누고, 커서가 올라간 칸만 떠오르며 그림자가 짙어진다 */
export default function TwoColGallery({
  duration = 220,
  easing = "ease-out",
  color = "#2f6df6",
}: TwoColGalleryProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <ul className={styles.gallery} style={vars} aria-label="Photo gallery">
      {[0, 1, 2, 3].map((i) => (
        <li key={i} className={`${styles.tile} ${styles["tile" + i]}`} tabIndex={0} />
      ))}
    </ul>
  );
}