.bento-grid-mosaic {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 250px;
  gap: 15px;
}

.mosaic-item {
  position: relative;
  background-size: cover;
  background-position: center;
  background-color: #e2e8f0; /* Fallback color so it's not invisible */
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
  width: 100%;
  height: 100%;
  display: block;
}

.mosaic-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.15);
}

.mosaic-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 50%, rgba(0,0,0,0) 100%);
  pointer-events: none;
}

.mosaic-content-wide {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 2;
}

.mosaic-content-wide h3 {
  color: white;
  margin: 0;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.btn-round-white {
  background: white;
  color: var(--color-text);
  padding: 0.6rem 1.2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.btn-round-white i {
  width: 18px; height: 18px;
}

.btn-round-white:hover {
  background: var(--color-primary);
  color: white;
}

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-4 { grid-column: span 4; }

.row-short { height: 120px; align-self: end; grid-row: span 1; }

#colecciones-destacadas {
  padding: 5rem 0;
  border-top: 1px solid var(--color-border);
}

@media (max-width: 992px) {
  .bento-grid-mosaic {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 220px;
  }
  .col-4 { grid-column: span 2; }
  .mosaic-content-wide h3 { font-size: 1.5rem; }
}

@media (max-width: 576px) {
  #colecciones-destacadas {
    padding: 3rem 0;
  }
  .coleccion-header h2 {
    font-size: 1.85rem !important;
  }
  .bento-grid-mosaic {
    grid-template-columns: 1fr;
    grid-auto-rows: 200px;
    gap: 12px;
  }
  .col-1, .col-2, .col-4 { grid-column: span 1 !important; }
  .row-short {
    height: auto !important;
    min-height: 140px;
  }
  .mosaic-content-wide {
    position: relative;
    padding: 1.25rem 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }
  .mosaic-content-wide h3 {
    font-size: 1.25rem;
    line-height: 1.25;
  }
  .btn-round-white {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
}