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

/* Estilo global */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f0ff; /* lilás muito suave */
  color: #3a2a56; /* violeta escuro */
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, #8e44ad, #5d3fa0); /* roxo → violeta */
  color: white;
  padding: 40px 20px;
  text-align: center;
}

header h1 {
  font-size: 2.2em;
  margin-bottom: 10px;
}

header p {
  font-size: 1em;
  opacity: 0.9;
}

.container {
  max-width: 960px;
  margin: 30px auto;
  padding: 0 20px;
}

section {
  margin-bottom: 40px;
}

h2 {
  margin-bottom: 20px;
  font-size: 1.6em;
  color: #5d3fa0; /* violeta */
  border-bottom: 2px solid #d8c9ff; /* lilás claro */
  padding-bottom: 6px;
}

.book-card {
  background-color: #ffffff;
  padding: 20px;
  margin-bottom: 20px;
  border-left: 5px solid #8e44ad; /* roxo médio */
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(90, 0, 150, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.book-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(90, 0, 150, 0.15);
}

.book-card h3 {
  font-size: 1.3em;
  color: #3a2a56; /* violeta escuro */
  margin-bottom: 6px;
}

.book-card h3 span {
  font-weight: normal;
  color: #6e5aa3; /* violeta acinzentado */
}

.book-card p {
  margin: 4px 0;
}

.book-card .desc {
  margin-top: 8px;
  color: #4b3a77; /* violeta médio */
}

ul {
  list-style: disc;
  margin-left: 20px;
  color: #5b4690; /* lilás escurecido */
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  color: #735ea3; /* violeta claro */
  background-color: #efe8ff; /* lavanda */
  border-top: 1px solid #d8c9ff;
}

/* Responsivo */
@media (max-width: 600px) {
  header h1 {
      font-size: 1.6em;
  }

  h2 {
      font-size: 1.3em;
  }

  .book-card h3 {
      font-size: 1.1em;
  }

  .container {
      padding: 0 10px;
  }
}