06Hover caption grid

<main class="stage">
  <div class="hc-grid is-demo">
    <div class="hc-tile hc-tile--a"><span class="hc-cap">Interior</span></div>
    <div class="hc-tile hc-tile--b"><span class="hc-cap">Outdoor</span></div>
    <div class="hc-tile hc-tile--c"><span class="hc-cap">Detail</span></div>
  </div>
</main>

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

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

@include stage($stage-yellow);

.hc-grid {
  width: min(260px, 78vw);
  aspect-ratio: 8 / 5;
  display: flex;
  gap: $sp-2;
}

.hc-tile {
  position: relative;
  flex: 1 1 0;
  border-radius: $r-sm;
  overflow: hidden;
}
.hc-tile--a { background: radial-gradient(60px circle at 30% 30%, rgba(255,255,255,.55), transparent 60%), linear-gradient(150deg, $subject-blue, $subject-ink); }
.hc-tile--b { background: radial-gradient(60px circle at 70% 40%, rgba(255,255,255,.55), transparent 60%), linear-gradient(150deg, $subject-cream, $subject-blue); }
.hc-tile--c { background: radial-gradient(60px circle at 50% 60%, rgba(255,255,255,.55), transparent 60%), linear-gradient(150deg, $subject-ink, $subject-cream); }

.hc-cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: $sp-2;
  background: rgba($color, .78);
  color: $subject-cream;
  font: 600 11px/1 -apple-system, "Segoe UI", sans-serif;
  transform: translateY(100%);
  opacity: 0;
}

// 실사용: 진짜 마우스 호버 — 지금 가리킨 칸만 캡션이 올라온다, 나머지는 그대로
.hc-cap { transition: transform $duration $easing, opacity $duration $easing; }
.hc-tile:hover .hc-cap { transform: translateY(0); opacity: 1; }

// 데모 루프: 세 칸을 순서대로 도는 캡션 (동시가 아니라 한 번에 하나씩)
@keyframes hc-cap-cycle {
  0%   { transform: translateY(100%); opacity: 0; }
  6%   { transform: translateY(0);    opacity: 1; }
  26%  { transform: translateY(0);    opacity: 1; }
  33%  { transform: translateY(100%); opacity: 0; }
  100% { transform: translateY(100%); opacity: 0; }
}
.hc-grid.is-demo .hc-tile--a .hc-cap { animation: hc-cap-cycle $dur-loop $easing infinite; animation-delay: 0s; }
.hc-grid.is-demo .hc-tile--b .hc-cap { animation: hc-cap-cycle $dur-loop $easing infinite; animation-delay: .66s; }
.hc-grid.is-demo .hc-tile--c .hc-cap { animation: hc-cap-cycle $dur-loop $easing infinite; animation-delay: 1.32s; }

@media (prefers-reduced-motion: reduce) {
  .hc-tile:hover .hc-cap,
  .hc-grid.is-demo .hc-tile .hc-cap {
    animation: none !important; transition: none !important; transform: translateY(0) !important; opacity: 1 !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);
}

.hc-grid {
  width: min(260px, 78vw);
  aspect-ratio: 8/5;
  display: flex;
  gap: 8px;
}

.hc-tile {
  position: relative;
  flex: 1 1 0;
  border-radius: 8px;
  overflow: hidden;
}

.hc-tile--a {
  background: radial-gradient(60px circle at 30% 30%, rgba(255, 255, 255, 0.55), transparent 60%), linear-gradient(150deg, #2f6df6, #17141a);
}

.hc-tile--b {
  background: radial-gradient(60px circle at 70% 40%, rgba(255, 255, 255, 0.55), transparent 60%), linear-gradient(150deg, #fff7e6, #2f6df6);
}

.hc-tile--c {
  background: radial-gradient(60px circle at 50% 60%, rgba(255, 255, 255, 0.55), transparent 60%), linear-gradient(150deg, #17141a, #fff7e6);
}

.hc-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 8px;
  background: rgba(23, 20, 26, 0.78);
  color: #fff7e6;
  font: 600 11px/1 -apple-system, "Segoe UI", sans-serif;
  transform: translateY(100%);
  opacity: 0;
}

.hc-cap {
  transition: transform 300ms ease-out, opacity 300ms ease-out;
}

.hc-tile:hover .hc-cap {
  transform: translateY(0);
  opacity: 1;
}

@keyframes hc-cap-cycle {
  0% {
    transform: translateY(100%);
    opacity: 0;
  }
  6% {
    transform: translateY(0);
    opacity: 1;
  }
  26% {
    transform: translateY(0);
    opacity: 1;
  }
  33% {
    transform: translateY(100%);
    opacity: 0;
  }
  100% {
    transform: translateY(100%);
    opacity: 0;
  }
}
.hc-grid.is-demo .hc-tile--a .hc-cap {
  animation: hc-cap-cycle 2s ease-out infinite;
  animation-delay: 0s;
}

.hc-grid.is-demo .hc-tile--b .hc-cap {
  animation: hc-cap-cycle 2s ease-out infinite;
  animation-delay: 0.66s;
}

.hc-grid.is-demo .hc-tile--c .hc-cap {
  animation: hc-cap-cycle 2s ease-out infinite;
  animation-delay: 1.32s;
}

@media (prefers-reduced-motion: reduce) {
  .hc-tile:hover .hc-cap,
  .hc-grid.is-demo .hc-tile .hc-cap {
    animation: none !important;
    transition: none !important;
    transform: translateY(0) !important;
    opacity: 1 !important;
  }
}

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

export interface HoverCaptionGridProps {
  duration?: string;
  easing?: string;
  color?: string;
}

const TILES = [
  { id: "a", label: "Interior" },
  { id: "b", label: "Outdoor" },
  { id: "c", label: "Detail" },
] as const;

export default function HoverCaptionGrid({
  duration = "300ms",
  easing = "ease-out",
  color = "#17141a",
}: HoverCaptionGridProps) {
  const capStyle: CSSProperties = { transitionDuration: duration, transitionTimingFunction: easing, background: `rgba(23, 20, 26, .78)` };
  return (
    <div className={styles.grid}>
      {TILES.map((t) => (
        <div key={t.id} className={`${styles.tile} ${styles["tile" + t.id.toUpperCase()]}`}>
          <span className={styles.cap} style={capStyle}>{t.label}</span>
        </div>
      ))}
    </div>
  );
}