body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background-color: #f4f4f4;
  color: #333;
  text-align: center;
}

header {
  background: #004c99;
  color: white;
  padding: 1rem;
}

.gallery-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  padding: 1rem;
}

.gallery-item {
  width: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  transition: transform 0.2s ease;
}

.gallery-item img:hover {
  transform: scale(1.03);
}

.label {
  margin-top: 0.3rem;
  font-size: 0.9rem;
  color: #444;
}

/* Full-screen modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.85);
  z-index: 9999;
}

.modal img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}