* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

.gallery-section {
  padding: 60px 10%;
  background: #f9f9f9;
  text-align: center;
}

.gallery-header h2 {
  font-size: 36px;
  margin-bottom: 10px;
  color: #222;
}

.gallery-header p {
  color: #666;
  margin-bottom: 40px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.gallery-item {
  overflow: hidden;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  border: 3px solid rgb(9, 101, 206);
}

.gallery-item img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: 0.4s ease;
}

.gallery-item img:hover {
  transform: scale(1.1);
}

/* LIGHTBOX */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.92);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.lightbox-img {
  max-width: 90%;
  max-height: 80%;
  border-radius: 10px;
}

/* CROSS BUTTON */
.close {
  position: absolute;
  top: 20px;
  right: 25px;
  font-size: 40px;
  color: white;
  cursor: pointer;
  width: 45px;
  height: 45px;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s;
}

.close:hover {
  background: red;
  transform: rotate(90deg);
}

/* RESPONSIVE */
@media (max-width: 992px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}