/* ==========================================================================
   Gallery — Section 17
   ========================================================================== */

.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-lg);
}

.gallery-filters__btn {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--color-navy);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.gallery-filters__btn:hover { border-color: var(--color-orange); }
.gallery-filters__btn.is-active {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-white);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}
@media (min-width: 768px) { .gallery-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .gallery-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-md); } }

.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: linear-gradient(160deg, var(--color-navy), var(--color-navy-light));
  border: none;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.35);
  font-size: 1.75rem;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}
.gallery-item:hover img { transform: scale(1.08); }

.gallery-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,50,74,0.75), transparent 60%);
  opacity: 0;
  display: flex;
  align-items: flex-end;
  padding: var(--space-sm);
  color: var(--color-white);
  font-size: var(--fs-small);
  font-weight: 600;
  transition: opacity var(--transition-fast);
}
.gallery-item:hover .gallery-item__overlay,
.gallery-item:focus-visible .gallery-item__overlay { opacity: 1; }

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1500;
  background: rgba(7,50,74,0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}
.lightbox.is-open { display: flex; }

.lightbox__figure {
  position: relative;
  max-width: min(90vw, 900px);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox__media {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(160deg, var(--color-navy-light), var(--color-navy));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.4);
  font-size: 3rem;
}
.lightbox__media img { width: 100%; height: 100%; object-fit: contain; border-radius: var(--radius-md); }

.lightbox__caption {
  color: var(--color-white);
  margin-top: var(--space-sm);
  font-size: var(--fs-small);
  text-align: center;
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  background: rgba(255,255,255,0.12);
  border: none;
  color: var(--color-white);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: background var(--transition-fast);
}
.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover { background: var(--color-orange); }

.lightbox__close { top: -56px; right: 0; }
@media (min-width: 768px) { .lightbox__close { top: 0; right: -56px; } }

.lightbox__prev { left: -8px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: -8px; top: 50%; transform: translateY(-50%); }
@media (min-width: 768px) {
  .lightbox__prev { left: -56px; }
  .lightbox__next { right: -56px; }
}