body {
  background: #fafafa;
}

.gallery-wrap {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  box-sizing: border-box;
}

.gallery-header {
  padding: 30px 0 10px;
  border-bottom: 1px solid #eee;
  margin-bottom: 24px;
}

.gallery-header h1 {
  font-family: "Lato", Verdana, Helvetica, sans-serif;
  font-size: 28px;
  font-weight: normal;
  color: #333;
  margin: 0 0 8px;
}

.gallery-header p {
  color: #666;
  margin: 0 0 16px;
}

.gallery-header .back-link {
  font-size: 13px;
}

.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.filter-btn {
  padding: 6px 16px;
  border: 1px solid #ccc;
  border-radius: 20px;
  background: white;
  font-family: "Lato", Verdana, Helvetica, sans-serif;
  font-size: 13px;
  cursor: pointer;
  color: #444;
  transition: all 0.15s;
  text-decoration: none;
  display: inline-block;
}

.filter-btn:hover,
.filter-btn.active {
  background: #991b1b;
  border-color: #991b1b;
  color: white;
}

.photo-grid {
  columns: 3;
  column-gap: 12px;
}

.photo-item {
  break-inside: avoid;
  margin-bottom: 12px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  border-radius: 4px;
}

.photo-item img {
  width: 100%;
  display: block;
  border-radius: 4px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.photo-item:hover img {
  transform: scale(1.03);
  opacity: 0.92;
}

.photo-item .caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.55));
  color: white;
  font-size: 12px;
  padding: 18px 10px 8px;
  opacity: 0;
  transition: opacity 0.2s;
  border-radius: 0 0 4px 4px;
}

.photo-item:hover .caption {
  opacity: 1;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.88);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 92vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 4px 40px rgba(0,0,0,0.6);
}

.lightbox-caption {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: #ddd;
  font-size: 14px;
  white-space: nowrap;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  color: white;
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
  background: none;
  border: none;
  padding: 4px 8px;
}

.lightbox-prev,
.lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-size: 32px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px 16px;
  user-select: none;
}

.lightbox-prev { left: 12px; }
.lightbox-next { right: 12px; }

@media (max-width: 600px) {
  .photo-grid {
    columns: 2;
    column-gap: 8px;
  }

  .photo-item {
    margin-bottom: 8px;
  }

  .lightbox-prev,
  .lightbox-next {
    font-size: 22px;
    padding: 4px 8px;
  }
}

@media (max-width: 380px) {
  .photo-grid {
    columns: 1;
  }
}