@import url('https://fonts.googleapis.com/css2?family=Fira+Sans:ital,wght@0,400;0,700;1,400;1,700&family=IBM+Plex+Sans:ital,wght@0,400;0,700;1,400;1,700&display=swap');

html {
  color: #222;
  font-size: 20px;
  line-height: 1.2;
}

* {
  --fonte-sans: 'Atkinson Hyperlegible', sans-serif;
  --fonte-serif: 'Bitter', serif;
}

.logo-header {
  margin: 0;
}

.logo-livro {
  width: 550px;
  max-width: 80%;
  margin: 25px;
}

.apresentacao-livro {
  font-size: 150%;
  margin: 20px;
}

.conteudo {
  background-color: white;
  margin-top: 50px;
}

.formatos {
  margin: 20px 0;
  display: flex;
  flex-flow: row wrap;
  align-items: stretch;
  gap: 10px;
}

.formato {
  flex: 1 1 40%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  padding: 10px;
  padding-top: 120px;
}

.pdf {
  background-image: linear-gradient(180deg, hsla(205, 70%, 85%, 0.0) 25%, hsla(205, 70%, 85%, 0.9) 50%), url("/img/livro_pdf.jpg") ;
}

.web {
  background-image: linear-gradient(180deg, hsla(205, 70%, 85%, 0.0) 25%, hsla(205, 70%, 85%, 0.9) 50%), url("/img/livro_web.jpg") ;
}

@media only screen and (max-width: 700px) {
  .formato {
    flex: 0 1 100%;
  }
}

.indisponivel {
  cursor: not-allowed;
}

.formato a {
  display: block;
  text-align: center;
  background: hsl(205, 90%, 25%);
  padding: 5px;
  margin: 10px 0 5px;
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}

.formato a:hover {
  background: hsl(205, 90%, 50%);
}

.formato a.indisponivel {
  display: block;
  text-align: center;
  background: hsl(205, 0%, 50%);
  padding: 5px;
  margin: 10px 0 5px;
  color: #333;
  text-decoration: none;
  font-style: italic;
  transition: all 0.3s ease;
}

.formato a.indisponivel:hover {
  background: hsl(205, 0%, 75%);
}


.formato h3 {
  margin: 0;
  font-family: var(--fonte-sans);
}

li + li {
  margin-top: 10px;
}

.leitor-pdf {
  margin: 25px 0;
}