body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  overflow-y: auto; /* Scroll allowed */
  background: #f4f4f4;
}

.gallery-container {
  max-width: 700px;
  margin: 20px auto;
  padding: 10px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.vertical-gallery {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.vertical-gallery figure {
  margin: 0;
  text-align: center;
}

.vertical-gallery img {
  width: 100%;
  border-radius: 8px;
  cursor: pointer;
}

.vertical-gallery figcaption {
  margin-top: 5px;
  color: #555;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  z-index: 1000;
  inset: 0;
  background: rgba(0,0,0,0.85);
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.lightbox-content {
  max-width: 90%;
  max-height: 80vh;
  border-radius: 10px;
  margin-bottom: 10px;
}

.lightbox .caption {
  color: white;
  font-size: 18px;
  text-align: center;
}

.close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 40px;
  font-weight: bold;
  color: white;
  cursor: pointer;
}