08스크림 캡션 리빌 갤러리

<main class="stage">
  <ul class="cr-gallery is-demo" aria-label="캡션이 있는 사진 갤러리">
    <li class="cr-card" tabindex="0">
      <span class="cr-card__img cr-card__img--a"></span>
      <span class="cr-card__scrim" aria-hidden="true"></span>
      <span class="cr-card__caption">Kyoto, 2024</span>
    </li>
    <li class="cr-card" tabindex="0">
      <span class="cr-card__img cr-card__img--b"></span>
      <span class="cr-card__scrim" aria-hidden="true"></span>
      <span class="cr-card__caption">Studio Nine</span>
    </li>
    <li class="cr-card" tabindex="0">
      <span class="cr-card__img cr-card__img--c"></span>
      <span class="cr-card__scrim" aria-hidden="true"></span>
      <span class="cr-card__caption">Seoul rooftop</span>
    </li>
  </ul>
</main>

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

$duration: $dur-base;                                     // 스크림·캡션 리빌 시간
$easing: $ease-out;
$color: $subject-lilac;                                   // 사진 그러데이션 포인트

@include stage($stage-ink);

.cr-gallery {
  display: flex;
  gap: $sp-2;
  list-style: none;
  margin: 0;
  padding: 0;
  width: min(260px, 84vw);
}
.cr-card {
  position: relative;
  flex: 1 1 0;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: $r-sm;
  outline: none;
  cursor: pointer;
}
.cr-card__img { position: absolute; inset: 0; }
.cr-card__img--a { background: linear-gradient(155deg, $color 0%, $stage-ink 100%); }
.cr-card__img--b { background: linear-gradient(205deg, $subject-sky 0%, $color 100%); }
.cr-card__img--c { background: linear-gradient(115deg, $color 0%, $subject-pink 60%); }

// 132 편의 "하단 띠" 방식과 달리, 사진 전체가 어두워지는 스크림 방식
.cr-card__scrim {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 120% at 50% 65%, rgba(23, 20, 26, 0) 0%, rgba(23, 20, 26, .86) 100%);
  opacity: 0;
  transition: opacity $duration $easing;
}
.cr-card__caption {
  position: absolute;
  left: $sp-2; right: $sp-2; bottom: $sp-3;
  color: $subject-cream;
  font: 700 12px/1.4 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-family: inherit;
  text-align: center;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity $duration $easing, transform $duration $easing;
}

.cr-card:hover .cr-card__scrim, .cr-card:focus-visible .cr-card__scrim { opacity: 1; }
.cr-card:hover .cr-card__caption, .cr-card:focus-visible .cr-card__caption { opacity: 1; transform: translateY(0); }

.cr-gallery.is-demo .cr-card:nth-child(1) .cr-card__scrim,
.cr-gallery.is-demo .cr-card:nth-child(1) .cr-card__caption { animation-delay: 0s; }
.cr-gallery.is-demo .cr-card:nth-child(2) .cr-card__scrim,
.cr-gallery.is-demo .cr-card:nth-child(2) .cr-card__caption { animation-delay: -0.67s; }
.cr-gallery.is-demo .cr-card:nth-child(3) .cr-card__scrim,
.cr-gallery.is-demo .cr-card:nth-child(3) .cr-card__caption { animation-delay: -1.33s; }
.cr-gallery.is-demo .cr-card__scrim { animation: scrim-loop $dur-loop $easing infinite; }
.cr-gallery.is-demo .cr-card__caption { animation: caption-loop $dur-loop $easing infinite; }

@keyframes scrim-loop {
  0%, 10%   { opacity: 0; }
  25%, 45%  { opacity: 1; }
  60%, 100% { opacity: 0; }
}
@keyframes caption-loop {
  0%, 10%   { opacity: 0; transform: translateY(6px); }
  25%, 45%  { opacity: 1; transform: translateY(0); }
  60%, 100% { opacity: 0; transform: translateY(6px); }
}

@media (prefers-reduced-motion: reduce) {
  .cr-card__scrim, .cr-card__caption { transition: none; }
  .cr-gallery.is-demo .cr-card__scrim, .cr-gallery.is-demo .cr-card__caption { 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);
}

.cr-gallery {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  width: min(260px, 84vw);
}

.cr-card {
  position: relative;
  flex: 1 1 0;
  aspect-ratio: 3/4;
  overflow: hidden;
  border-radius: 8px;
  outline: none;
  cursor: pointer;
}

.cr-card__img {
  position: absolute;
  inset: 0;
}

.cr-card__img--a {
  background: linear-gradient(155deg, #b9a0ff 0%, #17141a 100%);
}

.cr-card__img--b {
  background: linear-gradient(205deg, #6ec8ff 0%, #b9a0ff 100%);
}

.cr-card__img--c {
  background: linear-gradient(115deg, #b9a0ff 0%, #ff9ebb 60%);
}

.cr-card__scrim {
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 120% at 50% 65%, rgba(23, 20, 26, 0) 0%, rgba(23, 20, 26, 0.86) 100%);
  opacity: 0;
  transition: opacity 300ms ease-out;
}

.cr-card__caption {
  position: absolute;
  left: 8px;
  right: 8px;
  bottom: 12px;
  color: #fff7e6;
  font: 700 12px/1.4 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-family: inherit;
  text-align: center;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 300ms ease-out, transform 300ms ease-out;
}

.cr-card:hover .cr-card__scrim, .cr-card:focus-visible .cr-card__scrim {
  opacity: 1;
}

.cr-card:hover .cr-card__caption, .cr-card:focus-visible .cr-card__caption {
  opacity: 1;
  transform: translateY(0);
}

.cr-gallery.is-demo .cr-card:nth-child(1) .cr-card__scrim,
.cr-gallery.is-demo .cr-card:nth-child(1) .cr-card__caption {
  animation-delay: 0s;
}

.cr-gallery.is-demo .cr-card:nth-child(2) .cr-card__scrim,
.cr-gallery.is-demo .cr-card:nth-child(2) .cr-card__caption {
  animation-delay: -0.67s;
}

.cr-gallery.is-demo .cr-card:nth-child(3) .cr-card__scrim,
.cr-gallery.is-demo .cr-card:nth-child(3) .cr-card__caption {
  animation-delay: -1.33s;
}

.cr-gallery.is-demo .cr-card__scrim {
  animation: scrim-loop 2s ease-out infinite;
}

.cr-gallery.is-demo .cr-card__caption {
  animation: caption-loop 2s ease-out infinite;
}

@keyframes scrim-loop {
  0%, 10% {
    opacity: 0;
  }
  25%, 45% {
    opacity: 1;
  }
  60%, 100% {
    opacity: 0;
  }
}
@keyframes caption-loop {
  0%, 10% {
    opacity: 0;
    transform: translateY(6px);
  }
  25%, 45% {
    opacity: 1;
    transform: translateY(0);
  }
  60%, 100% {
    opacity: 0;
    transform: translateY(6px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .cr-card__scrim, .cr-card__caption {
    transition: none;
  }
  .cr-gallery.is-demo .cr-card__scrim, .cr-gallery.is-demo .cr-card__caption {
    animation: none;
  }
}

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

export type CaptionRevealHoverScrimProps = {
  duration?: number;
  easing?: string;
  /** 사진 그러데이션 포인트 색 */
  color?: string;
};

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

const CARDS = [
  { tone: "a", caption: "Kyoto, 2024" },
  { tone: "b", caption: "Studio Nine" },
  { tone: "c", caption: "Seoul rooftop" },
];

/** 커서를 올리면 사진 전체 위로 어두운 스크림이 번지듯 깔리며 캡션이 함께 떠오른다 */
export default function CaptionRevealHoverScrim({
  duration = 300,
  easing = "ease-out",
  color = "#b9a0ff",
}: CaptionRevealHoverScrimProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <ul className={styles.gallery} style={vars} aria-label="A gallery of photos with captions">
      {CARDS.map((c, i) => (
        <li key={i} className={styles.card} tabIndex={0}>
          <span className={`${styles.img} ${styles["img-" + c.tone]}`} />
          <span className={styles.scrim} aria-hidden="true" />
          <span className={styles.caption}>{c.caption}</span>
        </li>
      ))}
    </ul>
  );
}