/* ============================================
   GALERÍA — estilos de galeria.html
   ============================================ */

.filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1.5rem 0 2rem;
}

.filter-btn {
  border: 2px solid var(--border-soft);
  background: var(--cream-card);
  color: var(--ink-soft);
  font-family: var(--font-display);
  font-weight: 600;
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.filter-btn:hover { transform: translateY(-2px); }

.filter-btn.is-active {
  background: var(--teal);
  border-color: var(--teal);
  color: #fff;
}

/* Grid tipo collage: alturas variables mediante grid-row-span */
.collage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 130px;
  gap: 0.9rem;
  padding-bottom: 4rem;
}

.collage-item {
  border: none;
  padding: 0;
  background: none;
  cursor: pointer;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  position: relative;
}

.collage-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease, filter 0.3s ease;
}

.collage-item:hover img,
.collage-item:focus-visible img {
  transform: scale(1.09);
}

.collage-item::after {
  content: "🔍";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  background: rgba(61, 44, 34, 0);
  color: transparent;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.collage-item:hover::after,
.collage-item:focus-visible::after {
  background: rgba(61, 44, 34, 0.28);
  color: #fff;
}

/* Variedad de tamaños para efecto collage */
.collage-item.size-tall   { grid-row: span 2; }
.collage-item.size-wide   { grid-column: span 2; }
.collage-item.size-big    { grid-column: span 2; grid-row: span 2; }

.collage-item.is-hidden { display: none; }

/* ---------- LIGHTBOX ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(20, 14, 10, 0.9);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1.5rem;
}

.lightbox.is-open { display: flex; }

.lightbox-content {
  position: relative;
  max-width: min(900px, 92vw);
  max-height: 88vh;
  animation: fadeSlideUp 0.25s ease both;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0,0,0,0.5);
  margin-inline: auto;
}

.lightbox-counter {
  text-align: center;
  color: #f4e9db;
  margin-top: 0.8rem;
  font-family: var(--font-display);
  letter-spacing: 0.03em;
}

.lightbox-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(250, 243, 230, 0.92);
  border: none;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--ink);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.lightbox-btn:hover { transform: translateY(-50%) scale(1.08); background: #fff; }

.lightbox-prev { left: -1.4rem; }
.lightbox-next { right: -1.4rem; }

.lightbox-close {
  position: absolute;
  top: -3rem;
  right: -0.5rem;
  background: transparent;
  border: none;
  color: #f4e9db;
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
}

@media (max-width: 780px) {
  .collage-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 150px; }
  .collage-item.size-big { grid-column: span 2; grid-row: span 2; }
  .lightbox-prev { left: 0.2rem; }
  .lightbox-next { right: 0.2rem; }
  .lightbox-close { top: -2.6rem; right: 0; }
}