/* ==========================================================================
   SESSAIA STUDIO | PDP Lightbox & Fullscreen Gallery Modal Styles
   Aesthetic: Refined, atmospheric luxury with crisp squared corners
   ========================================================================== */

/* Main PDP Image Viewport Pointer */
.pdp-main-image-viewport {
  position: relative;
  cursor: pointer;
}

/* ==========================================================================
   GALLERY LIGHTBOX OVERLAY & CONTAINER
   ========================================================================== */
.gallery-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2600;
  background: rgba(14, 25, 33, 0.96);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  backdrop-filter: blur(28px) saturate(160%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.32s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.32s;
  user-select: none;
  -webkit-user-select: none;
}

.gallery-modal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Gallery Header Bar */
.gallery-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  z-index: 20;
  background: linear-gradient(180deg, rgba(14, 25, 33, 0.8) 0%, rgba(14, 25, 33, 0) 100%);
}

.gallery-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.gallery-piece-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  font-style: italic;
  color: var(--color-chalk);
  letter-spacing: 0.03em;
}

.gallery-header-center {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: rgba(253, 252, 247, 0.75);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.gallery-counter-curr {
  color: var(--color-gold-accent);
  font-weight: 600;
}

.gallery-counter-sep {
  opacity: 0.4;
}

.gallery-header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.gallery-close-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--color-chalk);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-atelier);
}

.gallery-close-btn:hover {
  background: var(--color-gold-accent);
  color: var(--color-slate-ink);
  border-color: var(--color-gold-accent);
  transform: rotate(90deg) scale(1.05);
}

.gallery-close-btn svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
}

/* ==========================================================================
   MAIN GALLERY STAGE
   ========================================================================== */
.gallery-stage {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0 5rem;
  min-height: 0;
}

.gallery-image-viewport {
  position: relative;
  max-width: min(88vw, 1060px);
  max-height: calc(85vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
}

.gallery-main-img {
  max-width: 100%;
  max-height: calc(85vh - 120px);
  width: auto;
  height: auto;
  object-fit: contain;
  border: none !important;
  outline: none !important;
  border-radius: 0;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.26s cubic-bezier(0.16, 1, 0.3, 1), transform 0.26s cubic-bezier(0.16, 1, 0.3, 1);
  image-rendering: auto;
}

.gallery-main-img.is-switching {
  opacity: 0;
  transform: scale(0.97);
}

/* Nav Arrows */
.gallery-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--color-chalk);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-atelier);
  z-index: 10;
}

.gallery-nav-btn.prev-btn {
  left: 1.75rem;
}

.gallery-nav-btn.next-btn {
  right: 1.75rem;
}

.gallery-nav-btn:hover {
  background: rgba(197, 168, 128, 0.25);
  border-color: rgba(197, 168, 128, 0.7);
  color: var(--color-gold-accent);
  transform: translateY(-50%) scale(1.08);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.gallery-nav-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.gallery-nav-btn svg {
  width: 22px;
  height: 22px;
  stroke-width: 1.5;
}

/* ==========================================================================
   BOTTOM THUMBNAILS BAR
   ========================================================================== */
.gallery-thumbnails-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem 1.5rem;
  background: linear-gradient(0deg, rgba(14, 25, 33, 0.85) 0%, rgba(14, 25, 33, 0) 100%);
  overflow-x: auto;
  max-width: 100vw;
  scrollbar-width: none;
  z-index: 20;
}

.gallery-thumbnails-bar::-webkit-scrollbar {
  display: none;
}

.gallery-thumb-item {
  position: relative;
  height: 60px;
  width: auto;
  min-width: 40px;
  flex-shrink: 0;
  border-radius: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.4);
  cursor: pointer;
  opacity: 0.5;
  padding: 0;
  margin: 0;
  transition: all var(--duration-fast) var(--ease-atelier);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
  box-sizing: border-box;
}

.gallery-thumb-item img {
  height: 58px;
  width: auto;
  max-width: none;
  object-fit: contain;
  display: block;
  border-radius: 0;
  pointer-events: none;
}

.gallery-thumb-item:hover {
  opacity: 0.85;
  border-color: rgba(197, 168, 128, 0.6);
  transform: translateY(-2px);
}

.gallery-thumb-item.active {
  opacity: 1;
  border-color: var(--color-gold-accent);
  box-shadow: 0 0 0 2px rgba(197, 168, 128, 0.5), 0 4px 12px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 768px) {
  .gallery-header {
    padding: 1rem 1.25rem;
  }

  .gallery-piece-title {
    font-size: 1.05rem;
  }

  .gallery-stage {
    padding: 0 1.25rem;
  }

  .gallery-nav-btn {
    width: 42px;
    height: 42px;
  }

  .gallery-nav-btn.prev-btn {
    left: 0.75rem;
  }

  .gallery-nav-btn.next-btn {
    right: 0.75rem;
  }

  .gallery-nav-btn svg {
    width: 18px;
    height: 18px;
  }

  .gallery-thumb-item {
    height: 50px;
    width: auto;
    min-width: 32px;
  }

  .gallery-thumb-item img {
    height: 48px;
    width: auto;
  }
}