/**
 * PC 카탈로그 — 플립 카드 상세 모달
 * 비활성화: scripts/product-card-flip-detail.js → PRODUCT_CARD_FLIP_DETAIL_ENABLED = false
 */

.mall-flip-detail {
  position: fixed;
  inset: 0;
  z-index: 1250;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(16px, env(safe-area-inset-top)) 24px max(16px, env(safe-area-inset-bottom));
  box-sizing: border-box;
  pointer-events: none;
  visibility: hidden;
  /* 루트 opacity 는 건드리지 않음 — backdrop 단일 페이드 (2단계 뚝딱 방지) */
  opacity: 1;
}

.mall-flip-detail:not(.hidden) {
  visibility: visible;
}

.mall-flip-detail.is-active {
  pointer-events: auto;
}

.mall-flip-detail.is-closing {
  /* 닫히는 동안에도 바깥 클릭이 카탈로그로 통과하지 않게 유지 */
  pointer-events: auto;
}

.mall-flip-detail__backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
  /* 블러 애니메이션·2단계 강약 전환 없음 — 저사양 PC 부담 최소화 */
  background: rgba(20, 24, 22, 0.46);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity;
}

.mall-flip-detail.is-backdrop-visible .mall-flip-detail__backdrop {
  opacity: 1;
}

.mall-flip-detail.is-closing .mall-flip-detail__backdrop {
  opacity: 0;
  transition-duration: 0.48s;
  transition-timing-function: cubic-bezier(0.4, 0, 0.68, 0.08);
}

.mall-flip-detail__stage {
  position: relative;
  z-index: 2;
  width: min(920px, calc(100vw - 40px));
  perspective: 1600px;
  transform-style: preserve-3d;
  opacity: 1;
  transform: scale(1) translateY(0);
  transition:
    opacity 0.38s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.44s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

/* 앞·뒤 — 뒷면 정상 · 앞면 좌우 반전 (Y플립 보정) */
.mall-flip-detail__face--front,
.mall-flip-detail__face--back {
  background: linear-gradient(165deg, #faf9f7 0%, #f3f1ee 48%, #fff 100%);
}

.mall-flip-detail__face--back {
  transform: rotateY(180deg);
  z-index: 1;
}

.mall-flip-detail__brand-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(32px, 6vw, 56px);
  box-sizing: border-box;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.mall-flip-detail__brand-face--front {
  transform: scaleX(-1);
}

.mall-flip-detail__brand-logo {
  display: block;
  width: auto;
  height: auto;
  max-width: min(80%, 360px);
  max-height: min(36vh, 180px);
  object-fit: contain;
  object-position: center;
}

.mall-flip-detail__brand-text {
  max-width: 88%;
  font-size: clamp(1.4rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.25;
  color: var(--mall-stone, #6b7280);
  word-break: keep-all;
}

.mall-flip-detail__brand-mark {
  display: block;
  width: min(42%, 120px);
  aspect-ratio: 1;
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(20, 24, 22, 0.04), rgba(20, 24, 22, 0.09));
}

/* 상세 — 3D 카드 밖 레이어 (로고 → 상세 크로스페이드) */
.mall-flip-detail__detail-layer {
  position: absolute;
  inset: 0;
  z-index: 6;
  display: block;
  border-radius: 28px;
  background: #fff;
  overflow: hidden;
  box-shadow:
    0 28px 70px rgba(20, 24, 22, 0.16),
    0 0 0 1px rgba(255, 255, 255, 0.65) inset;
  opacity: 0;
  visibility: visible;
  pointer-events: none;
  transition: opacity 0.92s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.mall-flip-detail__stage.is-detail-revealed .mall-flip-detail__detail-layer {
  opacity: 1;
  pointer-events: auto;
}

.mall-flip-detail__card {
  position: relative;
  width: 100%;
  transform-style: preserve-3d;
  transform: rotateY(0deg);
  transition:
    transform 0.65s cubic-bezier(0.33, 1, 0.38, 1),
    opacity 0.56s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, opacity;
}

.mall-flip-detail__stage.is-detail-revealed .mall-flip-detail__card {
  opacity: 0;
  pointer-events: none;
  will-change: auto;
  transition:
    transform 0.65s cubic-bezier(0.33, 1, 0.38, 1),
    opacity 0.88s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.02s;
}

.mall-flip-detail__stage.is-detail-revealed {
  will-change: auto;
}

.mall-flip-detail__card.is-flipped {
  transform: rotateY(180deg);
}

.mall-flip-detail.is-closing .mall-flip-detail__stage {
  opacity: 0;
  transform: scale(0.94) translateY(12px);
}

.mall-flip-detail__face {
  position: absolute;
  inset: 0;
  border-radius: 28px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  box-shadow:
    0 28px 70px rgba(20, 24, 22, 0.16),
    0 0 0 1px rgba(255, 255, 255, 0.65) inset;
  overflow: hidden;
}

.mall-flip-detail__face--front {
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--mall-card-divider, rgba(20, 24, 22, 0.08));
}

.mall-flip-detail__back-scroll {
  height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  contain: layout style paint;
  padding: 0;
}

.mall-flip-detail__back-toolbar {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  box-sizing: border-box;
  padding: 16px 20px 14px;
  margin: 0;
  background: #fff;
  border-bottom: 1px solid rgba(20, 24, 22, 0.05);
}

.mall-flip-detail__back-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0;
  padding: 2px 0;
  border: none;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--mall-muted, #585f68);
  cursor: pointer;
  transition: color 0.18s ease;
}

.mall-flip-detail__back-btn:hover {
  color: var(--mall-charcoal-deep, #353a42);
}

.mall-flip-detail__back-btn svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  opacity: 0.72;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.mall-flip-detail__back-btn:hover svg {
  transform: translateX(-3px);
  opacity: 1;
}

.mall-flip-detail__back-btn:focus-visible {
  outline: 2px solid var(--mall-charcoal, #353a42);
  outline-offset: 4px;
  border-radius: 2px;
}

.mall-flip-detail__toolbar-close {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--mall-muted, #585f68);
  cursor: pointer;
  transition:
    color 0.18s ease,
    background 0.18s ease;
}

.mall-flip-detail__toolbar-close:hover {
  color: var(--mall-charcoal-deep, #353a42);
  background: rgba(20, 24, 22, 0.05);
}

.mall-flip-detail__toolbar-close:focus-visible {
  outline: 2px solid var(--mall-charcoal, #353a42);
  outline-offset: 2px;
}

.mall-flip-detail.is-closing .mall-flip-detail__back-scroll {
  opacity: 0;
  transition: opacity 0.16s ease;
}

#mallFlipDetailRoot.product-detail-root {
  padding: 16px 20px 24px;
  /* 플립 상세 — 섹션 통째로 한 번에 페이드 (박스 순차 등장 방지) */
  opacity: 0;
  transform: translate3d(0, 10px, 0);
  transition:
    opacity 0.92s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.06s,
    transform 0.96s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.06s;
}

.mall-flip-detail__stage.is-detail-revealed #mallFlipDetailRoot.product-detail-root {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

#mallFlipDetailRoot .detail-hero {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(18px, 2.4vw, 24px);
  align-items: start;
}

#mallFlipDetailRoot .detail-gallery {
  min-height: min(300px, 40vh);
  padding: clamp(10px, 1.4vw, 14px) clamp(8px, 1.2vw, 12px);
}

#mallFlipDetailRoot .detail-gallery__frame img {
  max-height: min(58vh, 480px);
  width: auto;
  margin-inline: auto;
}

#mallFlipDetailRoot .detail-hero,
#mallFlipDetailRoot .detail-specs,
#mallFlipDetailRoot .detail-article,
#mallFlipDetailRoot .detail-block {
  content-visibility: visible;
  contain-intrinsic-size: unset;
  animation: none;
  transition: none;
}

@media (max-width: 720px) {
  #mallFlipDetailRoot .detail-hero {
    grid-template-columns: minmax(0, 1fr);
  }
}

body.mall-flip-detail-open {
  overflow: hidden;
}

@media (max-width: 900px) {
  .mall-flip-detail {
    display: none !important;
  }
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .mall-flip-detail__backdrop {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(20, 24, 22, 0.5);
  }
}

@media (prefers-reduced-motion: reduce) {
  .mall-flip-detail__backdrop,
  .mall-flip-detail__card,
  .mall-flip-detail__stage,
  .mall-flip-detail__back-scroll,
  .mall-flip-detail__detail-layer {
    transition: none !important;
  }

  .mall-flip-detail__backdrop {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: rgba(20, 24, 22, 0.5);
  }

  .mall-flip-detail__stage.is-detail-revealed .mall-flip-detail__detail-layer {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: none !important;
  }

  .mall-flip-detail.is-backdrop-visible .mall-flip-detail__backdrop {
    opacity: 1;
  }

  .mall-flip-detail__card.is-flipped {
    transform: rotateY(180deg);
  }

  .mall-flip-detail__stage.is-detail-revealed .mall-flip-detail__card {
    opacity: 0;
    pointer-events: none;
  }

  #mallFlipDetailRoot.product-detail-root,
  .mall-flip-detail__stage.is-detail-revealed #mallFlipDetailRoot.product-detail-root {
    opacity: 1;
    transform: none;
    transition: none;
  }
}