.study-card {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  height: 220px;
}
.study-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.study-card:hover img {
  transform: scale(1.1);
}
.study-card .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  font-weight: bold;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.study-card:hover .overlay {
  opacity: 1;
}