/* ════════════════════════════════════
   04-room-b.css — Room B (클론 코딩) · 가로 정렬, 홀로그램 hover
   ════════════════════════════════════ */
.room-b {
  background: var(--bg2);
  padding: 5rem 0;
}
.room-b-hdr {
  padding: 0 2.5rem 3rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: flex-end;
  gap: 3rem;
}
.rb-info {
  flex: 1;
}

.rb-name {
  font-size: clamp(2.4rem, 7vw, 7rem);
  font-weight: 700;
  color: var(--ink);
}

/* 그리드 — 작업물이 위/아래 2개씩(2x2)로 배열 */
.h-track {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem 5rem;
  padding: 3rem 2.5rem;
}
.h-card {
  position: relative;
  cursor: pointer;
}

/* 홀로그램 외곽선 hover — 이미지 감싸는 래퍼에 적용 */
.h-artwork-wrap {
  position: relative;
  border-radius: 4px;
  padding: 10px;
  background: rgba(26, 23, 20, 0.3);
  opacity: 0;
  transform: translateY(60px); /* 시작: 아래쪽에 위치 */
  transition:
    transform 0.8s cubic-bezier(0.25, 1, 0.5, 1),
    opacity 0.7s ease,
    background 0.4s ease,
    box-shadow 0.4s ease;
}
.h-card:hover .h-artwork-wrap {
  transform: translateY(-8px); /* 기존 hover 들뜨는 효과 유지 */
  background: linear-gradient(
    135deg,
    #e8d5ff,
    #c8e8ff,
    #c8f5e8,
    #fff5c8,
    #ffd5e8,
    #e8d5ff
  );
  background-size: 300% 300%;
  animation: holoFlow 3s ease infinite;
  box-shadow: 0 28px 60px rgba(26, 23, 20, 0.4);
}

/* 실제 이미지 박스 — 카드 폭에 맞춰 16:9로 자르기 */
.h-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 2px;
  position: relative;
}
.h-img img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.h-card:hover .h-img img {
  transform: scale(1.03);
}

/* ── 이미지 hover 오버레이 — 어두워지며 프로세스/작업물 버튼 노출 ── */
.h-img-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background: rgba(26, 23, 20, 0.55);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}
.h-card:hover .h-img-overlay {
  opacity: 1;
  pointer-events: auto;
}
.h-ov-btn {
  padding: 0.6rem 1.3rem;
  border: 1px solid #fff;
  color: #fff;
  background: transparent;
  border-radius: 5px;
  font-size: 1.2rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  transition:
    background 0.25s ease,
    color 0.25s ease;
}
.h-ov-btn:hover {
  background: #fff;
  color: var(--ink);
}

/* 아크릴 액자 캡션 */
.h-cap {
  position: relative;
  z-index: 2;
  width: fit-content;
  /* max-width: 100%; */
  margin-top: 1.5rem;
  padding: 2.5rem;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  outline: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow:
    0 15px 45px rgba(0, 0, 0, 0.15),
    inset 0 2px 2px rgba(255, 255, 255, 0.6),
    inset 0 -2px 3px rgba(0, 0, 0, 0.08);
  opacity: 0.6;
  transition: opacity 0.3s ease;
}
.h-card:hover .h-cap,
.h-card.lit .h-cap {
  opacity: 1;
}
.h-cap-screw-tl,
.h-cap-screw-tr,
.h-cap-screw-bl,
.h-cap-screw-br {
  position: absolute;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff, #cfcfcf 55%, #8b8b8b);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}
.h-cap-screw-tl {
  top: 0.8rem;
  left: 0.8rem;
}
.h-cap-screw-tr {
  top: 0.8rem;
  right: 0.8rem;
}
.h-cap-screw-bl {
  bottom: 0.8rem;
  left: 0.8rem;
}
.h-cap-screw-br {
  bottom: 0.8rem;
  right: 0.8rem;
}
.h-card.lit .h-artwork-wrap {
  transform: translateY(0); /* 스크롤 도달 시 제자리로 올라옴 */
  opacity: 1;
}
.hc-no {
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #a88bd8;
  margin-bottom: 1rem;
}
.hc-title {
  font-size: 1.7rem;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 0.3rem;
}
.hc-period {
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--ink);
  margin-bottom: 1rem;
}
.hc-desc {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink2);
  margin-bottom: 1rem;
}
.hc-type-tools {
  /* display: flex;
  align-items: center;
  gap: 1.2rem; */
}
.hc-type {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink2);
  margin: 1rem 0;
}
.hc-divider {
  height: 1px;
  background: var(--rule);
  margin: 1rem 0;
}
.hc-tools {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--ink2);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* 반응형 */
@media (max-width: 1024px) {
  .room-b {
    padding: 3.5rem 0;
  }
  .room-b-hdr {
    padding: 0 1.8rem 2rem;
    gap: 1.5rem;
  }
  .h-track {
    grid-template-columns: 1fr; /* 2열 → 1열, 태블릿부터 적용 */
    gap: 2.5rem;
    padding: 2rem 1.8rem;
  }
}

@media (max-width: 640px) {
  .room-b-hdr {
    flex-direction: column;
    align-items: flex-start;
  }
  .h-track {
    padding: 1.5rem 1.2rem;
  }
  .hc-title {
    font-size: 1.4rem;
  }
  .hc-type-tools {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }
}