.lightbox {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.9);
  /* Flexbox for centering */
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-content {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border: 1px solid #fff;
  border-style: hidden;
  box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

.close {
  position: absolute;
  top: 15px;
  right: 35px;
  color: #f1f1f1;
  font-size: 40px;
  font-weight: bold;
  transition: 0.3s;
  cursor: pointer;
}

.close:hover,
.close:focus {
  color: #bbb;
  text-decoration: none;
}

.zoomable-plot-image {
  cursor: pointer;
  transition: transform 0.3s ease;
}

.zoomable-plot-image:hover {
  transform: scale(1.05);
}