/* ==========================================================================
   SILENT MEMORY PHOTOGRAPHY - GALLERY STYLES
   Masonry layout, 2-level category filter, subtle category tint background,
   stagger entrance animations, custom cursor follower, and lightbox modal.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. GALLERY PAGE HEADER & FILTER BARS
   -------------------------------------------------------------------------- */
.gallery-header-section {
  padding-top: calc(var(--navbar-height) + 3.5rem);
  padding-bottom: 2rem;
  background-color: var(--bg-primary);
}

.gallery-title-area {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2.5rem auto;
}

.filter-bar-main {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.filter-btn-main {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  position: relative;
  transition: color var(--transition-fast);
}

.filter-btn-main::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 50%;
  transform: translateX(-50%);
  width: 0%;
  height: 2px;
  background-color: var(--accent-gold); /* ALWAYS --accent-gold for active indicator */
  transition: width var(--transition-fast);
}

.filter-btn-main:hover {
  color: var(--text-primary);
}

.filter-btn-main.active {
  color: var(--text-primary);
  font-weight: 600;
}

.filter-btn-main.active::after {
  width: 100%;
}

/* Level 2 Sub-category Filter Bar */
.filter-bar-sub {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  min-height: 40px;
  transition: opacity var(--transition-fast);
}

.filter-btn-sub {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.35rem 0.9rem;
  border-radius: 50px;
  border: 1px solid var(--border-color);
  background-color: transparent;
  transition: all var(--transition-fast);
}

.filter-btn-sub:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.filter-btn-sub.active {
  background-color: var(--bg-dark);
  color: var(--text-light);
  border-color: var(--bg-dark);
}

/* Category Contextual Dual-CTA Bar */
.gallery-context-cta {
  margin-top: 1.5rem;
  text-align: center;
  padding: 1rem;
  background-color: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-color);
  display: none;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  border-radius: 4px;
}

.gallery-context-cta.visible {
  display: flex;
}

/* --------------------------------------------------------------------------
   2. MASONRY GRID SYSTEM & CATEGORY TINT SECTION
   -------------------------------------------------------------------------- */
.gallery-grid-section {
  padding-top: 2rem;
  padding-bottom: 6rem;
  transition: background-color var(--transition-medium);
}

/* Mood tints applied strictly to gallery section background */
.gallery-grid-section[data-active-category="graduation"] {
  background-color: var(--tint-graduation);
}
.gallery-grid-section[data-active-category="private-photoshoot"] {
  background-color: var(--tint-private-photoshoot);
}
.gallery-grid-section[data-active-category="love-package"] {
  background-color: var(--tint-love-package);
}
.gallery-grid-section[data-active-category="event-documentation"] {
  background-color: var(--tint-event-documentation);
}
.gallery-grid-section[data-active-category="commercial"] {
  background-color: var(--tint-commercial);
}

/* Masonry Columns Layout */
.gallery-masonry {
  column-count: 3;
  column-gap: 1.5rem;
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: 1.5rem;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background-color: #F2EDE6;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Image styling - strictly NO fixed height crop */
.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item:hover img {
  transform: scale(1.03);
}

/* Placeholder box styling for un-exported fallback assets */
.gallery-placeholder-box {
  width: 100%;
  padding: 3rem 1.5rem;
  background-color: #EAE3D8;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: background-color var(--transition-fast);
}

.gallery-placeholder-box.portrait {
  min-height: 380px;
}

.gallery-placeholder-box.landscape {
  min-height: 250px;
}

.gallery-item:hover .gallery-placeholder-box {
  background-color: #E2DACD;
}

.gallery-placeholder-cat {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: 0.5rem;
}

.gallery-placeholder-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--text-primary);
}

.gallery-item-info {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.25rem;
  background: linear-gradient(0deg, rgba(26,26,24,0.85) 0%, transparent 100%);
  color: var(--text-light);
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.gallery-item:hover .gallery-item-info {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   3. CURSOR FOLLOWER LABEL ("Lihat")
   -------------------------------------------------------------------------- */
.cursor-follower {
  position: fixed;
  top: 0;
  left: 0;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background-color: var(--accent-gold);
  color: var(--text-light);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 9999;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.5);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.cursor-follower.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* --------------------------------------------------------------------------
   4. LIGHTBOX MODAL
   -------------------------------------------------------------------------- */
.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #000000;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-medium);
}

.lightbox-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-close-btn {
  position: absolute;
  top: 2rem;
  right: 2rem;
  color: #FFFFFF;
  font-size: 2rem;
  line-height: 1;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 10002;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.lightbox-close-btn:hover {
  opacity: 1;
}

.lightbox-content-wrap {
  position: relative;
  max-width: 90vw;
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
}

.lightbox-placeholder-box {
  width: 80vw;
  max-width: 800px;
  height: 60vh;
  background-color: #1A1A18;
  border: 1px solid #333330;
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #FFFFFF;
  font-size: 2rem;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  z-index: 10001;
}

.lightbox-nav-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.lightbox-prev { left: 2rem; }
.lightbox-next { right: 2rem; }

.lightbox-caption {
  position: absolute;
  bottom: 2rem;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-align: center;
}

/* --------------------------------------------------------------------------
   5. RESPONSIVE BREAKPOINTS (GALLERY)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .gallery-masonry {
    column-count: 2;
  }
  .cursor-follower {
    display: none !important; /* Disable cursor follower on touch devices */
  }
}

@media (max-width: 640px) {
  .gallery-masonry {
    column-count: 1;
  }

  .filter-bar-main, .filter-bar-sub {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding-left: 1rem;
    padding-right: 1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .filter-bar-main::-webkit-scrollbar, .filter-bar-sub::-webkit-scrollbar {
    display: none;
  }
  .filter-btn-main, .filter-btn-sub {
    flex-shrink: 0;
  }
  .lightbox-nav-btn {
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }
  .lightbox-prev { left: 0.5rem; }
  .lightbox-next { right: 0.5rem; }
}