/* Logo no topo */
.logo-topo {
  text-align: center;
  margin: 10px 0;
}

.logo-topo img {
  height: 60px;
}

/* Barra do menu abaixo da logo */
.menu-bar {
  background-color: black;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
}

/* Menu de navegação */
.menu-bar nav ul {
  list-style-type: none;
  display: flex;
  gap: 15px;
  margin: 0;
  padding: 0;
}

.menu-bar nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.menu-bar nav ul li a:hover {
  color: goldenrod;
}

/* Bandeira */
.lang-icon {
  height: 30px;
  margin-left: 10px;
}

/* Conteúdo principal */
main {
  text-align: center;
  padding: 50px 20px;
}

/* Rodapé */
footer {
  background-color: black;
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}

/* Cards dos livros */
.book {
  background-color: #f5f5f5;
  border-radius: 12px;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
  padding: 15px;
  width: 260px; /* Largura fixa padrão */
  max-width: 100%;
  text-align: center;
  transition: transform 0.3s ease;
}

.book:hover {
  transform: scale(1.02);
}

.book img {
  width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: cover;
  border-radius: 8px;
}

.book-title {
  font-size: 1.1em;
  font-weight: bold;
  margin: 12px 0;
}

.book-buttons a {
  display: block;
  margin: 8px 0;
  padding: 10px;
  background-color: black;
  color: white;
  text-decoration: none;
  border-radius: 6px;
}

/* Responsividade */
@media (max-width: 768px) {
  .book {
    width: 45%;
  }
}

@media (max-width: 500px) {
  .book {
    width: 90%;
  }
}

/* Imagem de topo */
.header-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  }
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

nav ul li a:hover {
  color: goldenrod;
  text-decoration: underline;
}

nav ul li a.active,
nav ul li a.active:hover {
  color: goldenrod;
  text-decoration: underline;
}