/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  color: #f5f5f5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
  background: url('https://i.ibb.co/21Zw3qp6/noctheria-capa.webp') no-repeat center center fixed;
  background-size: cover;
  position: relative;
}

body::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  z-index: -1;
}

.book-cover-container {
  margin: 20px auto;
}

.book-cover {
  max-width: 250px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.6);
}

.book-info {
  max-width: 700px;
  margin: 0 auto;
}

.book-synopsis {
  font-size: 1rem;
  line-height: 1.7;
  margin: 20px 0;
}

.buttons-row {
  margin: 20px 0;
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

.btn {
  padding: 10px 22px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: 0.3s;
  display: inline-block;
}

.tiktok-btn {
  background: #000;
  color: #fff;
}

.threads-btn {
  background: #0f0f0f;
  color: #fff;
}

.feedback-btn {
  background: #c62828;
  color: #fff;
}

.capitulos-btn {
  background: #d4000b;
  color: #fff;
}

.btn:hover {
  transform: scale(1.07);
  opacity: 0.9;
}

.book-details {
  margin-top: 20px;
  font-size: 0.95rem;
  line-height: 1.5;
}

@media (max-width: 768px) {
  body {
    flex-direction: column;
    align-items: flex-start;
    padding: 15px;
    text-align: left;
  }

  .book-cover {
    max-width: 180px;
    margin: 0 auto;
    display: block;
  }

  .book-info {
    max-width: 100%;
    margin-top: 20px;
  }

  .book-synopsis {
    font-size: 0.95rem;
    line-height: 1.6;
  }

  .book-details {
    font-size: 0.9rem;
  }

  .buttons-row {
    flex-direction: column; 
    gap: 10px;
  }

  .btn {
    width: 100%; 
    text-align: center;
  }
}