04動画サムネイルグリッド 再生オーバーレイ

<main class="stage">
  <ul class="vgallery is-demo" aria-label="動画ギャラリー">
    <li class="vcard">
      <span class="vcard__thumb vcard__thumb--a"></span>
      <span class="vcard__ring" aria-hidden="true"></span>
      <button class="vcard__play" type="button" aria-label="動画を再生">▶</button>
      <span class="vcard__time">0:32</span>
    </li>
    <li class="vcard">
      <span class="vcard__thumb vcard__thumb--b"></span>
      <span class="vcard__ring" aria-hidden="true"></span>
      <button class="vcard__play" type="button" aria-label="動画を再生">▶</button>
      <span class="vcard__time">1:05</span>
    </li>
    <li class="vcard">
      <span class="vcard__thumb vcard__thumb--c"></span>
      <span class="vcard__ring" aria-hidden="true"></span>
      <button class="vcard__play" type="button" aria-label="動画を再生">▶</button>
      <span class="vcard__time">0:48</span>
    </li>
  </ul>
</main>

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

$duration: $dur-loop;                                     // 재생버튼·파동 한 주기
$easing: $ease-out;
$color: $subject-sky;                                     // 썸네일 그러데이션 포인트

@include stage($stage-ink);

.vgallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: $sp-2;
  list-style: none;
  margin: 0;
  padding: 0;
  width: min(280px, 84vw);
}
.vcard {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: $r-sm;
}
.vcard__thumb { position: absolute; inset: 0; }
.vcard__thumb--a { background: linear-gradient(155deg, $color 0%, $stage-ink 100%); }
.vcard__thumb--b { background: linear-gradient(205deg, $subject-lilac 0%, $stage-ink 100%); }
.vcard__thumb--c { background: linear-gradient(115deg, $color 0%, $subject-lilac 60%); }

.vcard__ring {
  position: absolute;
  left: 50%; top: 50%;
  width: 30px; height: 30px;
  margin: -15px 0 0 -15px;
  border-radius: 50%;
  border: 2px solid $subject-cream;
  opacity: 0;
}
.vcard__play {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 30px; height: 30px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .92);
  color: $stage-ink;
  font-size: 10px;
  line-height: 1;
  text-indent: 2px;                                       // 삼각형 아이콘 시각 중심 보정 (padding 아님 — BD17 격자 대상 밖)
  cursor: pointer;
  transition: transform $duration $easing;
}
.vcard__time {
  position: absolute;
  right: $sp-1; bottom: $sp-1;
  padding: 0 $sp-1;
  background: rgba(23, 20, 26, .78);
  color: $subject-cream;
  font: 700 9px/1.4 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-family: inherit;
  border-radius: $r-xs;
}

.vcard:hover .vcard__play, .vcard__play:focus-visible { transform: translate(-50%, -50%) scale(1.2); }

.vgallery.is-demo .vcard:nth-child(1) .vcard__play { animation: play-pulse $duration $easing infinite; }
.vgallery.is-demo .vcard:nth-child(1) .vcard__ring { animation: ring-pulse $duration $easing infinite; }
.vgallery.is-demo .vcard:nth-child(2) .vcard__play { animation: play-pulse $duration $easing infinite; animation-delay: -0.67s; }
.vgallery.is-demo .vcard:nth-child(2) .vcard__ring { animation: ring-pulse $duration $easing infinite; animation-delay: -0.67s; }
.vgallery.is-demo .vcard:nth-child(3) .vcard__play { animation: play-pulse $duration $easing infinite; animation-delay: -1.33s; }
.vgallery.is-demo .vcard:nth-child(3) .vcard__ring { animation: ring-pulse $duration $easing infinite; animation-delay: -1.33s; }

@keyframes play-pulse {
  0%, 15%   { transform: translate(-50%, -50%) scale(1); }
  30%       { transform: translate(-50%, -50%) scale(1.2); }
  45%, 100% { transform: translate(-50%, -50%) scale(1); }
}
@keyframes ring-pulse {
  0%, 15%   { transform: scale(1); opacity: 0; }
  30%       { opacity: .9; }
  60%       { transform: scale(1.9); opacity: 0; }
  100%      { transform: scale(1); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .vcard__play { transition: none; }
  .vgallery.is-demo .vcard__play, .vgallery.is-demo .vcard__ring { 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);
}

.vgallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  width: min(280px, 84vw);
}

.vcard {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 8px;
}

.vcard__thumb {
  position: absolute;
  inset: 0;
}

.vcard__thumb--a {
  background: linear-gradient(155deg, #6ec8ff 0%, #17141a 100%);
}

.vcard__thumb--b {
  background: linear-gradient(205deg, #b9a0ff 0%, #17141a 100%);
}

.vcard__thumb--c {
  background: linear-gradient(115deg, #6ec8ff 0%, #b9a0ff 60%);
}

.vcard__ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 30px;
  height: 30px;
  margin: -15px 0 0 -15px;
  border-radius: 50%;
  border: 2px solid #fff7e6;
  opacity: 0;
}

.vcard__play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: #17141a;
  font-size: 10px;
  line-height: 1;
  text-indent: 2px;
  cursor: pointer;
  transition: transform 2s ease-out;
}

.vcard__time {
  position: absolute;
  right: 4px;
  bottom: 4px;
  padding: 0 4px;
  background: rgba(23, 20, 26, 0.78);
  color: #fff7e6;
  font: 700 9px/1.4 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  font-family: inherit;
  border-radius: 4px;
}

.vcard:hover .vcard__play, .vcard__play:focus-visible {
  transform: translate(-50%, -50%) scale(1.2);
}

.vgallery.is-demo .vcard:nth-child(1) .vcard__play {
  animation: play-pulse 2s ease-out infinite;
}

.vgallery.is-demo .vcard:nth-child(1) .vcard__ring {
  animation: ring-pulse 2s ease-out infinite;
}

.vgallery.is-demo .vcard:nth-child(2) .vcard__play {
  animation: play-pulse 2s ease-out infinite;
  animation-delay: -0.67s;
}

.vgallery.is-demo .vcard:nth-child(2) .vcard__ring {
  animation: ring-pulse 2s ease-out infinite;
  animation-delay: -0.67s;
}

.vgallery.is-demo .vcard:nth-child(3) .vcard__play {
  animation: play-pulse 2s ease-out infinite;
  animation-delay: -1.33s;
}

.vgallery.is-demo .vcard:nth-child(3) .vcard__ring {
  animation: ring-pulse 2s ease-out infinite;
  animation-delay: -1.33s;
}

@keyframes play-pulse {
  0%, 15% {
    transform: translate(-50%, -50%) scale(1);
  }
  30% {
    transform: translate(-50%, -50%) scale(1.2);
  }
  45%, 100% {
    transform: translate(-50%, -50%) scale(1);
  }
}
@keyframes ring-pulse {
  0%, 15% {
    transform: scale(1);
    opacity: 0;
  }
  30% {
    opacity: 0.9;
  }
  60% {
    transform: scale(1.9);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .vcard__play {
    transition: none;
  }
  .vgallery.is-demo .vcard__play, .vgallery.is-demo .vcard__ring {
    animation: none;
  }
}

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

export type VideoThumbnailPlayOverlayProps = {
  /** 재생버튼·파동 한 주기 (기본 2000ms) */
  duration?: number;
  easing?: string;
  /** 썸네일 그러데이션 포인트 색 */
  color?: string;
};

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

const CLIPS = [
  { tone: "a", time: "0:32" },
  { tone: "b", time: "1:05" },
  { tone: "c", time: "0:48" },
];

/** 재생 버튼이 커지면서 둘레로 파동 링이 한 번 퍼져 나가 재생 가능한 영상임을 알려준다 */
export default function VideoThumbnailPlayOverlay({
  duration = 2000,
  easing = "ease-out",
  color = "#6ec8ff",
}: VideoThumbnailPlayOverlayProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  return (
    <ul className={styles.gallery} style={vars} aria-label="Video gallery">
      {CLIPS.map((c, i) => (
        <li key={i} className={styles.card}>
          <span className={`${styles.thumb} ${styles["thumb-" + c.tone]}`} />
          <span className={styles.ring} aria-hidden="true" style={{ animationDelay: `-${i * (duration / 3)}ms` }} />
          <button type="button" className={styles.play} aria-label="Play video" style={{ animationDelay: `-${i * (duration / 3)}ms` }}>▶</button>
          <span className={styles.time}>{c.time}</span>
        </li>
      ))}
    </ul>
  );
}