/* =========================================================
   GALLERY PAGE — masonry grid, filters, lightbox
   ========================================================= */

.gallery-hero {
  background: linear-gradient(160deg, var(--navy) 0%, #0a4a8a 100%);
  color: #fff;
  padding: 9rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.gallery-hero .hero-bg-pattern { position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(255,255,255,0.07) 1.5px, transparent 1.5px); background-size: 26px 26px; }
.gallery-hero .container { position: relative; z-index: 1; }
.gallery-hero h1 { color: #fff; font-size: var(--fs-h1); }
.gallery-hero p { color: rgba(246,247,252,0.82); max-width: 52ch; margin: 0 auto; }
.back-home {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.9rem; font-weight: 600;
  color: rgba(246,247,252,0.85);
  margin-bottom: 1.5rem;
}
.back-home svg { width: 18px; height: 18px; }
.back-home:hover { color: var(--pollen); }

.gallery-filters {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246,247,252,0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
  padding: 1.1rem 0;
}
.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}
.filter-btn {
  padding: 0.6rem 1.3rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--border-soft);
  background: var(--surface);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink-soft);
  transition: all var(--dur-fast);
}
.filter-btn:hover { border-color: var(--accent-primary); color: var(--accent-primary); }
.filter-btn.is-active { background: var(--navy); border-color: var(--navy); color: #fff; }

.masonry {
  column-count: 4;
  column-gap: 1.25rem;
  padding: var(--space-xl) 0;
}
.masonry-item {
  break-inside: avoid;
  margin-bottom: 1.25rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  cursor: zoom-in;
  box-shadow: var(--shadow-card);
  transition: transform var(--dur-med) var(--ease-out), opacity var(--dur-med) var(--ease-out);
}
.masonry-item.is-hidden { display: none; }
.masonry-photo {
  width: 100%;
  display: block;
  aspect-ratio: var(--ar, 3/4);
  position: relative;
  overflow: hidden;
}
.masonry-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Placeholder tile: replace with a real <img> when event photography is available.
   Keeping structure identical (.masonry-photo) makes the swap a one-line change. */
.masonry-photo.ph {
  display: flex;
  align-items: center;
  justify-content: center;
}
.masonry-photo.ph .ph-pattern {
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.35) 1.5px, transparent 1.5px);
  background-size: 22px 22px;
  opacity: 0.5;
}
.masonry-photo.ph img.ph-dino {
  width: 42%;
  opacity: 0.9;
  filter: drop-shadow(0 10px 16px rgba(0,0,0,0.18));
  position: relative;
  z-index: 1;
}

.masonry-photo::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(200deg, transparent 55%, rgba(0,29,61,0.55));
  opacity: 0;
  transition: opacity var(--dur-fast);
  z-index: 2;
}
.masonry-item:hover .masonry-photo::after { opacity: 1; }
.masonry-item:hover { transform: translateY(-6px); }

.masonry-caption {
  position: absolute;
  left: 1rem; bottom: 1rem; right: 1rem;
  color: #fff;
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--dur-fast);
  z-index: 1;
}
.masonry-item:hover .masonry-caption { opacity: 1; transform: translateY(0); }
.masonry-caption .cat { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--pollen); font-weight: 700; }
.masonry-caption .ttl { font-family: var(--font-display); font-size: 1.05rem; }

.gallery-empty {
  text-align: center;
  padding: var(--space-2xl) 0;
  display: none;
}
.gallery-empty.is-visible { display: block; }
.gallery-empty img { width: 140px; margin: 0 auto 1.5rem; }

.ph-babies    { background: linear-gradient(155deg, var(--pollen) 0%, var(--pollen-tint) 100%); }
.ph-explorador{ background: linear-gradient(155deg, var(--azure) 0%, var(--azure-tint) 100%); }
.ph-aventurero{ background: linear-gradient(155deg, var(--fern) 0%, var(--fern-tint) 100%); }
.ph-rolling   { background: linear-gradient(155deg, var(--navy) 0%, var(--azure) 100%); }
.ph-eventos   { background: linear-gradient(155deg, var(--flame) 0%, var(--flame-tint) 100%); }

@media (max-width: 1100px) { .masonry { column-count: 3; } }
@media (max-width: 780px) { .masonry { column-count: 2; } }
@media (max-width: 480px) { .masonry { column-count: 1; } }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0;
  background: rgba(0, 18, 38, 0.94);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox-inner {
  position: relative;
  max-width: min(90vw, 1000px);
  max-height: 86vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lightbox-frame {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  transform: scale(0.94);
  transition: transform var(--dur-med) var(--ease-out);
}
.lightbox.is-open .lightbox-frame { transform: scale(1); }
.lightbox-caption { color: #fff; margin-top: 1.1rem; text-align: center; }
.lightbox-caption .cat { color: var(--pollen); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; }
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  background: rgba(255,255,255,0.1);
  border: 1.5px solid rgba(255,255,255,0.25);
  color: #fff;
  border-radius: 50%;
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-fast);
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { background: rgba(255,255,255,0.25); }
.lightbox-close { top: -60px; right: 0; }
.lightbox-prev { left: clamp(-10px, -4vw, 10px); top: 50%; transform: translateY(-50%); }
.lightbox-next { right: clamp(-10px, -4vw, 10px); top: 50%; transform: translateY(-50%); }
.lightbox-close svg, .lightbox-prev svg, .lightbox-next svg { width: 20px; height: 20px; }

@media (max-width: 640px) {
  .lightbox-close { top: -52px; right: 0; }
  .lightbox-prev { left: 4px; }
  .lightbox-next { right: 4px; }
}