.overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.85);

  /* Hidden by default */
  opacity: 0;
  visibility: hidden;

  display: flex;
  justify-content: center;
  align-items: center;

  transition: opacity 0.3s ease;
  z-index: 1000;
}

/* Only show when targeted */
.overlay:target {
  opacity: 1;
  visibility: visible;
}

/* Zoomed image */
.overlay img {
  max-width: 90%;
  max-height: 90%;
  transform: scale(0.7);
  transition: transform 0.3s ease;
}

.overlay:target img {
  transform: scale(1);
}

/* Close button */
.close {
  position: absolute;
  top: 20px; right: 30px;
  font-size: 40px;
  color: white;
  text-decoration: none;
}

/* Thumbnail that can zoom */
img.zoomable {
  border: 5px solid black;
  border-radius: 10px;
  cursor: pointer;
  transition: 0.3s;
}

img.zoomable:hover {
  opacity: 0.8;
}

.overlay{
display:none;
position:fixed;
top:0;
left:0;
width:100%;
height:100%;
background:rgba(0,0,0,0.8);
text-align:center;
padding-top:50px;
}

.overlay:target{
display:block;
}

.overlay img{
max-width:80%;
}

.zoom-img {
  transition: transform 0.3s ease;
}

.zoom-img:hover {
  transform: scale(1.2);
}

.hover-img {
  border: 5px solid black;
  transition: all 0.3s ease; /* smooth hover effect */
}

.hover-img:hover {
  border-color: red;                  /* border changes on hover */
  box-shadow: 0 4px 15px rgba(0,0,0,0.3); /* subtle shadow */
  opacity: 0.9;                       /* slight fade */
}
.hover-img {
  border: 5px solid black;
  display: block;           /* important so hover works properly */
  transition: all 0.3s ease;
}

.hover-img:hover {
  border-color: red;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
  opacity: 0.9;
  cursor: pointer;         /* optional, makes it clear it's interactive */
}