/* ===========================
   Gallery Hero
   =========================== */
.gal-hero {
  padding: 8rem 0 3rem;
  text-align: center;
}

.gal-hero-title {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.gal-hero-sub {
  max-width: 550px;
  margin: 0 auto;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===========================
   Sticky Section Nav
   =========================== */
.gal-nav-wrap {
  position: sticky;
  top: 80px;
  z-index: 50;
  background-color: rgba(11, 17, 33, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
  overflow: visible;
}

.gal-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  padding: 1.25rem 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.gal-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.3s ease, background-color 0.3s ease;
}

.gal-nav-link:hover {
  color: var(--color-white);
}

.gal-nav-link.active {
  background-color: var(--color-bg-elevated);
  color: var(--color-white);
}

/* ===========================
   Gallery Sections
   =========================== */
.gal-section {
  padding: 4rem 0;
  scroll-margin-top: 150px;
}

.gal-section + .gal-section {
  border-top: 1px solid var(--color-border);
}

/* Section Header */
.gal-section-header {
  margin-bottom: 3rem;
  max-width: 500px;
}

.gal-section-num {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.gal-section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.gal-section-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===========================
   Gallery Grid
   =========================== */
.gal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.gal-grid--masonry {
  grid-auto-rows: 220px;
}

.gal-grid--icons {
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

/* Gallery Items */
.gal-item {
  border-radius: 12px;
  overflow: hidden;
  background-color: var(--color-bg-card);
  position: relative;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gal-item:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
  z-index: 2;
}

.gal-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gal-item:hover img {
  transform: scale(1.05);
}

/* Masonry sizing */
.gal-item--tall {
  grid-row: span 2;
}

.gal-item--wide {
  grid-column: span 2;
}

/* Icon items */
.gal-item--icon {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background-color: var(--color-bg-elevated);
}

.gal-item--icon img {
  width: 80%;
  height: 80%;
  object-fit: contain;
}

/* ===========================
   Scroll Reveal
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(30px) scale(0.95);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Staggered delays */
.gal-grid .reveal:nth-child(1) { transition-delay: 0s; }
.gal-grid .reveal:nth-child(2) { transition-delay: 0.08s; }
.gal-grid .reveal:nth-child(3) { transition-delay: 0.16s; }
.gal-grid .reveal:nth-child(4) { transition-delay: 0.24s; }
.gal-grid .reveal:nth-child(5) { transition-delay: 0.32s; }
.gal-grid .reveal:nth-child(6) { transition-delay: 0.4s; }
.gal-grid .reveal:nth-child(7) { transition-delay: 0.48s; }
.gal-grid .reveal:nth-child(8) { transition-delay: 0.56s; }

/* ===========================
   Lightbox
   =========================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  cursor: zoom-out;
}

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

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 8px;
  object-fit: contain;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.lightbox.open img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: #fff;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
  .gal-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gal-grid--icons {
    grid-template-columns: repeat(3, 1fr);
  }

  .gal-grid--masonry {
    grid-auto-rows: 160px;
  }

  .gal-item--wide {
    grid-column: span 1;
  }

  .gal-nav {
    gap: 0.15rem;
  }

  .gal-nav-link {
    font-size: 0.75rem;
    padding: 0.55rem 0.9rem;
    min-height: 44px;
  }
}

@media (max-width: 480px) {
  .gal-hero {
    padding: 6rem 0 2rem;
  }

  .gal-grid {
    grid-template-columns: 1fr;
  }

  .gal-grid--icons {
    grid-template-columns: repeat(2, 1fr);
  }

  .gal-grid--masonry {
    grid-auto-rows: auto;
  }

  .gal-item--tall {
    grid-row: span 1;
  }

  .gal-nav-wrap {
    top: 56px;
  }

  .gal-nav {
    padding: 0.75rem 0.5rem;
    gap: 0.1rem;
  }

  .gal-nav-link {
    font-size: 0.7rem;
    padding: 0.5rem 0.65rem;
  }

  .gal-section {
    scroll-margin-top: 120px;
  }

  .gal-section-title {
    font-size: 1.5rem;
  }

  .lightbox-close {
    top: 1rem;
    right: 1rem;
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
  }
}