/* ================================================================
   Gallery Page — gallery.css
   Loaded in addition to styles.css on gallery.html only
================================================================ */

/* Gallery page always has solid nav (no hero behind it) */
.gallery-page .site-header {
  background: var(--white);
  box-shadow: 0 2px 16px rgba(0,0,0,.1);
}
.gallery-page .nav-logo  { filter: none; }
.gallery-page .nav-link  { color: var(--text); }
.gallery-page .nav-link:hover { color: var(--blue); }
.gallery-page .hamburger span { background: var(--text); }

/* Active nav item */
.nav-active {
  color: var(--blue) !important;
  font-weight: 700;
}

/* ---------------------------------------------------------------
   Gallery Hero  (page title strip)
--------------------------------------------------------------- */
.gallery-hero {
  background: var(--off-white);
  border-bottom: 3px solid var(--blue);
  padding: 7rem 0 3rem;   /* top accounts for fixed nav */
  text-align: center;
}
.gallery-hero .eyebrow { margin-bottom: .6rem; }
.gallery-hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  color: var(--text);
  margin: .4rem 0 .9rem;
}
.gallery-hero p {
  max-width: 580px;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ---------------------------------------------------------------
   Gallery Main
--------------------------------------------------------------- */
.gallery-main {
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(4rem, 8vw, 6rem);
}

/* Category section */
.gallery-category {
  margin-bottom: clamp(3rem, 6vw, 5rem);
}
.gallery-category:last-child { margin-bottom: 0; }

.gallery-cat-heading {
  font-family: var(--font-ui);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue);
  padding-bottom: .65rem;
  border-bottom: 2px solid var(--blue-light);
  margin-bottom: 1.5rem;
}

/* Photo grid */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .85rem;
}

/* Individual photo */
.photo-item {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--gray-100);
  cursor: zoom-in;
  position: relative;
}
.photo-item img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform .4s var(--ease);
}
.photo-item:hover img {
  transform: scale(1.03);
}

/* ---------------------------------------------------------------
   Lightbox
--------------------------------------------------------------- */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(5, 10, 30, .95);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  cursor: zoom-out;
}
.lightbox-overlay[hidden] { display: none; }

.lightbox-img-wrap {
  position: relative;
  max-width: min(90vw, 1100px);
  max-height: 88vh;
}
.lightbox-img-wrap img {
  max-width: 100%;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius);
  display: block;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}

/* Prev / Next arrows */
.lightbox-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s;
  z-index: 1001;
  font-size: 1.25rem;
}
.lightbox-btn:hover { background: rgba(255,255,255,.22); }
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

/* Close button */
.lightbox-close {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .2s;
  z-index: 1001;
  font-size: 1.25rem;
}
.lightbox-close:hover { background: rgba(255,255,255,.22); }

/* ---------------------------------------------------------------
   Responsive
--------------------------------------------------------------- */
@media (max-width: 900px) {
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .photo-grid { grid-template-columns: 1fr; }
  .photo-item img { aspect-ratio: 16/10; }
  .gallery-hero { padding-top: 6rem; }
  .lightbox-prev { left: .5rem; }
  .lightbox-next { right: .5rem; }
}