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

body {
  background: #f7f7f7;
  padding: 20px;
}

.heading {
  text-align: center;
  margin-bottom: 30px;
  font-size: 2rem;
  color: #333;
}

.catalogue-container {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  padding: 10px;
}

.card {
  background: white;
  border-radius: 15px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
  overflow: hidden;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card h3 {
  padding: 15px 20px 5px;
  color: #222;
}

.card p {
  padding: 0 20px 15px;
  color: #555;
  font-size: 0.95rem;
}
b{
  color: #0258f8;
}

.book-btn {
  margin: 0 20px 20px;
  padding: 10px 15px;
  background: #0258f8;
  border: none;
  color: white;
  font-size: 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.book-btn:hover {
  background: #023aa1;
}