/* Biblioteca de libros. Se carga despues de estilo.css para reutilizar la
   paleta, la tipografia y el cielo nocturno de la pagina principal. */

.pagina-biblioteca {
  min-height: 100vh;
  padding-bottom: 3rem;
}

.cabecera-libros {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.2rem 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--borde-cristal);
}

.marca-libros {
  color: var(--crema);
  font-size: 1.05rem;
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
}

.cabecera-libros nav {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.cabecera-libros nav a {
  color: var(--crema-suave);
  font-size: .82rem;
  letter-spacing: .04em;
  text-decoration: none;
}

.cabecera-libros nav a:hover,
.cabecera-libros nav a:focus-visible {
  color: var(--oro-claro);
}

.biblioteca {
  width: min(72rem, 100% - 2.2rem);
  margin: 0 auto;
  padding-top: 2.8rem;
}

.migas {
  margin: 0 0 1.5rem;
  color: var(--crema-suave);
  font-size: .82rem;
  letter-spacing: .04em;
}

.migas a {
  color: var(--crema-suave);
  text-decoration: none;
}

.migas a:hover,
.migas a:focus-visible {
  color: var(--oro-claro);
}

.encabezado-biblioteca {
  max-width: 48rem;
  margin-bottom: 2.2rem;
}

.ojo {
  margin: 0 0 .6rem;
  color: var(--oro-claro);
  font-size: .76rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.encabezado-biblioteca h1,
.libro-texto h1 {
  margin: 0;
  color: var(--crema);
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: .03em;
}

.entrada {
  max-width: 42rem;
  margin: 1rem 0 0;
  color: var(--crema-suave);
  font-size: 1.08rem;
}

.catalogo {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.2rem;
}

.tarjeta-libro {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--borde-cristal);
  border-radius: 10px;
  background: linear-gradient(150deg, rgba(255,255,255,.075), rgba(255,255,255,.025));
  box-shadow: 0 18px 50px rgba(0,0,0,.18);
}

.tarjeta-libro .tapa {
  min-height: 16rem;
}

.tarjeta-cuerpo {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.15rem 1.2rem 1.3rem;
}

.tarjeta-cuerpo h2 {
  margin: 0;
  color: var(--crema);
  font-size: 1.45rem;
  font-weight: 400;
  line-height: 1.2;
}

.tarjeta-cuerpo p {
  margin: .7rem 0 1.1rem;
  color: var(--crema-suave);
  font-size: .95rem;
}

.tarjeta-cuerpo .boton-oro,
.tarjeta-cuerpo .boton-linea {
  margin-top: auto;
  align-self: flex-start;
}

.libro-heroe {
  display: grid;
  grid-template-columns: minmax(15rem, 22rem) minmax(0, 1fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
}

.libro-texto {
  max-width: 39rem;
}

.sello {
  display: inline-block;
  margin: 0 0 1rem;
  padding: .38rem .8rem;
  border: 1px solid rgba(217,183,92,.6);
  border-radius: 999px;
  color: var(--oro-claro);
  font-size: .74rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.libro-texto .entrada {
  margin-top: 1.2rem;
}

.aviso-precio {
  margin: 1.4rem 0 0;
  padding: .9rem 1rem;
  border-left: 3px solid var(--oro-claro);
  background: rgba(217,183,92,.09);
  color: var(--crema);
  font-size: .98rem;
}

.acciones-libro {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.5rem;
}

.boton-oro,
.boton-linea {
  display: inline-block;
  padding: .78rem 1.1rem;
  border-radius: 6px;
  font-size: .88rem;
  letter-spacing: .04em;
  text-align: center;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.boton-oro {
  border: 1px solid #d9b75c;
  background: linear-gradient(135deg, #d9b75c, #a9812f);
  color: #211709;
  box-shadow: 0 7px 22px rgba(169,129,47,.28);
}

.boton-oro:hover,
.boton-oro:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(169,129,47,.38);
}

.boton-linea {
  border: 1px solid rgba(217,183,92,.55);
  color: var(--crema);
  background: rgba(255,255,255,.03);
}

.boton-linea:hover,
.boton-linea:focus-visible {
  transform: translateY(-2px);
  background: rgba(217,183,92,.12);
}

.tapa {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 22rem;
  padding: 1.35rem;
  overflow: hidden;
  border: 1px solid rgba(217,183,92,.55);
  border-radius: 8px;
  background:
    radial-gradient(90% 65% at 80% 10%, rgba(217,183,92,.22), transparent 55%),
    linear-gradient(145deg, #2a1d12, #120f0b 60%, #241a10);
  box-shadow: 0 24px 60px rgba(0,0,0,.35), inset 0 0 0 5px rgba(217,183,92,.08);
  color: var(--crema);
}

.tapa::before,
.tapa::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border: 1px solid rgba(217,183,92,.28);
}

.tapa::before {
  inset: .65rem;
  border-radius: 4px;
}

.tapa::after {
  inset: 1rem;
  border-radius: 2px;
}

.tapa-sello,
.tapa-pie {
  position: relative;
  z-index: 1;
  color: var(--oro-claro);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.tapa strong {
  position: relative;
  z-index: 1;
  margin: 1.8rem 0;
  color: #f4e7c4;
  font-size: clamp(1.55rem, 3.2vw, 2.25rem);
  font-weight: 400;
  line-height: 1.18;
  text-align: center;
  text-shadow: 0 0 24px rgba(217,183,92,.25);
}

.tapa-linea {
  position: relative;
  z-index: 1;
  display: block;
  width: 4.5rem;
  height: 1px;
  margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--oro-claro), transparent);
}

.ficha-libro {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.8rem;
}

.ficha-libro article {
  padding: 1.2rem 1.25rem;
  border: 1px solid var(--borde-cristal);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255,255,255,.065), rgba(255,255,255,.02));
}

.ficha-libro h2 {
  margin: 0 0 .55rem;
  color: var(--oro-claro);
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.ficha-libro p {
  margin: 0;
  color: var(--crema-suave);
  font-size: .95rem;
}

.pie-biblioteca {
  width: min(72rem, 100% - 2.2rem);
  margin: 3rem auto 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--borde-cristal);
  color: var(--crema-suave);
  font-size: .82rem;
}

.pie-biblioteca a {
  color: var(--crema);
  text-decoration: none;
}

.pie-biblioteca a:hover,
.pie-biblioteca a:focus-visible {
  color: var(--oro-claro);
}

@media (max-width: 760px) {
  .cabecera-libros {
    align-items: flex-start;
    flex-direction: column;
  }

  .libro-heroe {
    grid-template-columns: 1fr;
  }

  .tapa {
    min-height: 18rem;
  }

  .ficha-libro {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .boton-oro,
  .boton-linea {
    transition: none;
  }
}