body {
  font-family: 'Poppins', sans-serif;
  background-color: #f0f8ff;
  text-align: center;
  margin: 50px;
  padding: 0;
}

.book-container {
  margin-top: 50px;
}

button {
  padding: 12px 30px;
  font-size: 18px;
  font-weight: 600;
  background-color: #FF6F61; 
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

button:hover {
  background-color: #FFB03B; 
  transform: translateY(-3px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.book-info {
  margin-top: 20px;
  border: 2px solid #FF6F61;
  padding: 20px;
  border-radius: 12px;
  background-color: #fff7f1;
  display: none;
  text-align: left;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h2 {
  font-size: 28px;
  color: #FF6F61;
  font-weight: 600;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 2px;
}

p {
  font-size: 18px;
  color: #333;
  line-height: 1.5;
}

button:focus {
  outline: none;
  box-shadow: 0 0 8px rgba(255, 111, 97, 0.6);
}

.book-info {
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

#back-btn {
    padding: 12px 30px;
    font-size: 18px;
    font-weight: 600;
    background-color: #FF6F61; 
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
  }
  
  #back-btn:hover {
    background-color: #FFB03B; 
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  }
  