body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #111;
  color: #fff;
}

header {
  text-align: center;
  padding: 30px 15px;
  background: #6b0000;
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
}

header p {
  margin-top: 10px;
  opacity: 0.9;
}

.gallery {
  column-count: 3;
  column-gap: 15px;
  padding: 20px;
}

.gallery img {
  width: 100%;
  margin-bottom: 15px;
  border-radius: 10px;
  break-inside: avoid;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.gallery img:hover {
  transform: scale(1.03);
  box-shadow: 0 10px 25px rgba(0,0,0,0.7);
}

/* Responsive */
@media (max-width: 900px) {
  .gallery {
    column-count: 2;
  }
}

@media (max-width: 500px) {
  .gallery {
    column-count: 1;
  }
}

footer {
  text-align: center;
  padding: 15px;
  background: #000;
  font-size: 0.9rem;
}