body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #e0f0ff; /* Soft light blue background */
}

h1 {
  text-align: center;
  font-size: 3rem;
  font-weight: bold;
  color: #222;
  margin: 100px auto 30px;
  width: fit-content;
  background: linear-gradient(90deg, #ff7e5f, #feb47b); /* Vibrant gradient */
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  padding: 10px 30px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  grid-auto-rows: 220px;
  gap: 20px;
  background: #f0f8ff; /* Soft pastel background */
  padding: 30px;
  border-radius: 16px;
  max-width: 1200px;
  margin: 0 auto 50px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  display: block;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.grid img:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(0,0,0,0.3);
  cursor: pointer;
}

.item1 { grid-column: span 2; grid-row: span 2; }
.item4 { grid-column: span 2; grid-row: span 2; }
.item7 { grid-column: span 2; grid-row: span 1; }

@media (max-width: 600px) {
  .grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 220px;
  }
}