.catalogs-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin: 40px auto;
  max-width: 1000px;
  padding: 0 20px;
}

.catalog-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  border: 1px solid #ddd;
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  background: #fff;
  transition: transform 0.2s ease;
}

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

.catalog-cover {
  width: 150px;
  border: 1px solid #ccc;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.catalog-info {
  flex: 1;
}

.catalog-info h3 {
  margin-bottom: 15px;
  font-size: 18px;
  font-weight: bold;
  color: #333;
}

.btn {
  display: inline-block;
  margin: 5px 10px 5px 0;
  padding: 10px 20px;
  text-decoration: none;
  font-weight: bold;
  border-radius: 4px;
}

.browse-btn {
  background: #d32f2f;
  color: #fff;
}

.pdf-btn {
  background: #b71c1c;
  color: #fff;
}