/* ============================================
   Xavier Novaes — Historia de una huida
   Estética: novela negra, cine, fuga nocturna
   ============================================ */

:root{
  --ink:        #0c0a0a;   /* fondo casi negro, tinta */
  --ink-2:      #161312;   /* paneles */
  --paper:      #ece6dc;   /* texto claro, papel viejo */
  --paper-dim:  #9b938a;   /* texto secundario */
  --blood:      #b5302a;   /* acento rojo sangre/brasa */
  --blood-2:    #d94b3f;   /* hover */
  --line:       #2a2421;   /* divisores */
  --max:        1180px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:'Inter',system-ui,sans-serif;
  font-size:18px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit}

/* ---------- Tipografía ---------- */
h1,h2,h3{font-family:'Fraunces',Georgia,serif;line-height:1.02;font-weight:900}
.eyebrow{
  font-family:'Inter',sans-serif;
  font-size:.72rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--blood-2);
  font-weight:600;
  margin-bottom:1.1rem;
}
.eyebrow--center{text-align:center}

/* ---------- Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem clamp(1.2rem,4vw,3rem);
  background:rgba(12,10,10,.72);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav__brand{
  font-family:'Fraunces',serif;font-weight:900;font-size:1.15rem;
  text-decoration:none;letter-spacing:.01em;
}
.nav__menu{display:flex;gap:1.6rem}
.nav__menu a{
  text-decoration:none;font-size:.85rem;color:var(--paper-dim);
  transition:color .2s;letter-spacing:.02em;
}
.nav__menu a:hover{color:var(--paper)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__toggle span{width:24px;height:2px;background:var(--paper);transition:.3s}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100svh;
  display:flex;flex-direction:column;justify-content:center;
  padding:7rem clamp(1.2rem,6vw,5rem) 4rem;
  background:
    radial-gradient(120% 90% at 78% 18%, rgba(181,48,42,.20), transparent 55%),
    radial-gradient(90% 70% at 10% 95%, rgba(181,48,42,.10), transparent 60%),
    var(--ink);
  overflow:hidden;
}
.hero__grain{
  position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.hero__inner{position:relative;max-width:var(--max);margin:0 auto;width:100%}
.hero__title{
  font-size:clamp(3.4rem,13vw,9.5rem);
  letter-spacing:-.02em;margin:.2em 0 .4em;
}
.hero__title span{color:var(--blood)}
.hero__lede{max-width:30ch;font-size:clamp(1.05rem,2.2vw,1.4rem);color:var(--paper-dim)}
.hero__cta{display:flex;gap:1rem;flex-wrap:wrap;margin-top:2.4rem}
.hero__scroll{
  position:absolute;bottom:1.6rem;left:50%;transform:translateX(-50%);
  color:var(--paper-dim);font-size:1.3rem;animation:bob 2s infinite;
}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ---------- Botones ---------- */
.btn{
  display:inline-block;text-decoration:none;
  padding:.85rem 1.6rem;font-size:.9rem;font-weight:600;
  letter-spacing:.02em;border-radius:2px;transition:.2s;
}
.btn--solid{background:var(--blood);color:#fff}
.btn--solid:hover{background:var(--blood-2)}
.btn--ghost{border:1px solid var(--line);color:var(--paper)}
.btn--ghost:hover{border-color:var(--blood);color:var(--blood-2)}

/* ---------- Secciones ---------- */
.section{max-width:var(--max);margin:0 auto;padding:clamp(4.5rem,10vw,8rem) clamp(1.2rem,5vw,3rem)}
.section__title{font-size:clamp(2.2rem,6vw,4rem);text-align:center;margin-bottom:3rem}
.section__title--left{text-align:left;margin-bottom:1.6rem}

/* ---------- Trilogía / books ---------- */
.books{display:grid;grid-template-columns:repeat(2,1fr);gap:2.5rem}
.book{
  background:var(--ink-2);border:1px solid var(--line);border-radius:4px;
  overflow:hidden;display:flex;flex-direction:column;transition:.3s;
}
.book:hover{transform:translateY(-6px);border-color:var(--blood)}
.book__cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:#1d1917}
.book__cover img{width:100%;height:100%;object-fit:cover}
.book__num{
  position:absolute;top:.8rem;left:.9rem;
  font-family:'Fraunces',serif;font-size:1.4rem;font-weight:900;
  color:var(--blood-2);background:rgba(12,10,10,.7);
  width:2.4rem;height:2.4rem;display:grid;place-items:center;border-radius:2px;
}
.book__body{padding:1.6rem 1.8rem 2rem}
.book__body h3{font-size:1.7rem;margin-bottom:.2rem}
.book__year{color:var(--blood-2);font-size:.8rem;letter-spacing:.15em;margin-bottom:1rem}
.book__body p{color:var(--paper-dim);font-size:.96rem;margin-bottom:1.2rem}

/* ---------- Feature (cada novela) ---------- */
.feature{
  display:grid;grid-template-columns:minmax(0,360px) 1fr;gap:clamp(2rem,6vw,5rem);
  align-items:center;max-width:var(--max);margin:0 auto;
  padding:clamp(4rem,8vw,7rem) clamp(1.2rem,5vw,3rem);
  border-top:1px solid var(--line);
}
.feature--alt{background:var(--ink-2)}
.feature--alt{max-width:none}
.feature--alt > *{}
.feature__cover img{
  border-radius:4px;box-shadow:0 30px 60px -20px rgba(0,0,0,.8);
  width:100%;
}
.feature__text h2{font-size:clamp(2rem,5vw,3.4rem);margin-bottom:1.4rem}
.feature__text p{color:var(--paper-dim);margin-bottom:1.1rem;max-width:60ch}
.feature__links{display:flex;flex-direction:column;gap:.6rem;margin-top:1.6rem}

/* centramos el contenido interno de feature--alt */
.feature--alt{
  display:flex;justify-content:center;
}
.feature--alt::before{content:none}

.link-arrow{
  color:var(--paper);text-decoration:none;font-size:.92rem;font-weight:500;
  border-bottom:1px solid var(--line);padding-bottom:2px;width:fit-content;
  transition:.2s;
}
.link-arrow::after{content:" →";color:var(--blood-2)}
.link-arrow:hover{color:var(--blood-2);border-color:var(--blood-2)}

/* ---------- Autor ---------- */
.author{display:grid;grid-template-columns:300px 1fr;gap:clamp(2rem,6vw,4.5rem);align-items:start}
.author__photo img{border-radius:4px;width:100%;filter:grayscale(.25) contrast(1.05)}
.author__bio p{color:var(--paper-dim);margin-bottom:1rem;max-width:62ch}

/* ---------- Comprar ---------- */
.buy__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.store{
  display:flex;flex-direction:column;gap:.3rem;
  padding:1.5rem 1.6rem;text-decoration:none;
  background:var(--ink-2);border:1px solid var(--line);border-radius:4px;transition:.2s;
}
.store:hover{border-color:var(--blood);transform:translateY(-3px)}
.store__city{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--blood-2)}
.store__name{font-family:'Fraunces',serif;font-size:1.25rem;font-weight:600}

/* ---------- Contacto ---------- */
.contact{
  text-align:center;max-width:var(--max);margin:0 auto;
  padding:clamp(4rem,9vw,7rem) clamp(1.2rem,5vw,3rem);
  border-top:1px solid var(--line);
}
.contact__lede{color:var(--paper-dim);margin-bottom:2rem}
.contact__links{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}

/* ---------- Footer ---------- */
.footer{
  text-align:center;padding:2.5rem 1.2rem;
  border-top:1px solid var(--line);color:var(--paper-dim);font-size:.82rem;
}

/* ---------- Galería ---------- */
.gallery{
  max-width:var(--max);margin:0 auto;
  padding:clamp(4rem,9vw,7rem) clamp(1.2rem,5vw,3rem);
  border-top:1px solid var(--line);
}
.gallery__head{margin-bottom:2.6rem;max-width:60ch}
.gallery__lede{color:var(--paper-dim)}
.gallery__grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;
  grid-auto-flow:dense;
}
.gframe{
  position:relative;overflow:hidden;border-radius:4px;
  aspect-ratio:4/3;background:var(--ink-2);border:1px solid var(--line);
}
.gframe--wide{grid-column:span 2}
.gframe img{
  width:100%;height:100%;object-fit:cover;
  filter:grayscale(.35) contrast(1.05);
  transition:transform .5s ease,filter .4s ease;
}
.gframe:hover img{transform:scale(1.05);filter:grayscale(0) contrast(1)}
.gframe figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:1.4rem .9rem .7rem;
  font-family:'Fraunces',serif;font-size:1rem;font-weight:600;
  color:var(--paper);
  background:linear-gradient(transparent,rgba(12,10,10,.85));
  transform:translateY(.4rem);opacity:.85;transition:.3s;
}
.gframe:hover figcaption{transform:translateY(0);opacity:1}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .nav__toggle{display:flex}
  .nav__menu{
    position:fixed;inset:0 0 0 auto;width:min(78vw,320px);
    flex-direction:column;gap:0;padding:5rem 2rem;
    background:var(--ink-2);border-left:1px solid var(--line);
    transform:translateX(100%);transition:transform .35s ease;
  }
  .nav__menu.open{transform:translateX(0)}
  .nav__menu a{padding:1rem 0;font-size:1.05rem;border-bottom:1px solid var(--line)}
  .feature{grid-template-columns:1fr}
  .feature__cover{max-width:320px;margin:0 auto}
  .author{grid-template-columns:1fr}
  .author__photo{max-width:280px}
  .buy__grid{grid-template-columns:repeat(2,1fr)}
  .gframe--wide{grid-column:span 1}
  .gallery__grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .books{grid-template-columns:1fr}
  .buy__grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto}
}