/* ============================================================
   Portal Javier Navarro — sistema de diseño compartido
   Usado por index.html y por el index.html de cada colección.
   ============================================================ */

:root{
  --paper:#faf9f7;
  --paper-2:#f2efea;
  --card:#ffffff;
  --ink:#131a24;
  --ink-2:#3f4a5a;
  --ink-3:#6b7688;
  --line:#e2ded7;
  --accent:#9a5b2d;
  --accent-soft:#f3e7dd;
  --navy:#101c2c;
  --navy-2:#1b2c42;
  --radius:14px;
  --shadow-s:0 1px 2px rgba(16,28,44,.06), 0 2px 8px rgba(16,28,44,.05);
  --shadow-m:0 10px 30px rgba(16,28,44,.10);
  --serif:"Fraunces", Georgia, "Times New Roman", serif;
  --sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --wrap:1180px;
}
@media (prefers-color-scheme: dark){
  :root{
    --paper:#0e141d;
    --paper-2:#131b26;
    --card:#161f2b;
    --ink:#eef2f7;
    --ink-2:#b9c3d1;
    --ink-3:#8b97a8;
    --line:#243040;
    --accent:#d99a63;
    --accent-soft:#2a2019;
    --navy:#0a111a;
    --navy-2:#141f2e;
    --shadow-s:0 1px 2px rgba(0,0,0,.4);
    --shadow-m:0 10px 30px rgba(0,0,0,.45);
  }
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.15;letter-spacing:-.01em;margin:0}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}

.wrap{width:min(100% - 2.5rem, var(--wrap));margin-inline:auto}
.section{padding:clamp(3.5rem,7vw,6rem) 0}
.section--alt{background:var(--paper-2)}
.section--tight{padding-block:clamp(2.5rem,5vw,4rem)}

/* ---------- Cabecera ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:1.5rem;height:66px}
.brand{font-family:var(--serif);font-size:1.18rem;font-weight:700;text-decoration:none;letter-spacing:-.02em;white-space:nowrap}
.brand span{color:var(--accent)}
.nav-links{display:flex;gap:1.6rem;margin-left:auto;list-style:none;padding:0;margin-block:0}
.nav-links a{
  text-decoration:none;font-size:.93rem;font-weight:500;color:var(--ink-2);
  padding-block:.35rem;border-bottom:1.5px solid transparent;transition:color .18s, border-color .18s;
}
.nav-links a:hover{color:var(--ink);border-color:var(--accent)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:.8rem}

/* Selector de idioma */
.lang-switch{
  display:flex;align-items:center;gap:2px;
  background:var(--paper-2);border:1px solid var(--line);
  border-radius:999px;padding:3px;
}
.lang-switch a{
  display:inline-block;padding:.26rem .58rem;border-radius:999px;
  font-size:.74rem;font-weight:700;letter-spacing:.05em;
  text-decoration:none;color:var(--ink-3);line-height:1;
  transition:background .18s ease, color .18s ease;
}
.lang-switch a:hover{color:var(--ink);background:var(--card)}
.lang-switch a[aria-current="true"]{background:var(--accent);color:#fff}

@media (max-width:900px){.nav-links{display:none}.nav-cta{margin-left:auto}}
@media (max-width:560px){.nav-cta .btn{display:none}}

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.72rem 1.35rem;border-radius:999px;
  font-size:.94rem;font-weight:600;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--accent);color:#fff;box-shadow:var(--shadow-s)}
.btn--primary:hover{box-shadow:var(--shadow-m)}
.btn--ghost{border-color:var(--line);color:var(--ink);background:var(--card)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn--light{background:#fff;color:var(--navy)}
.btn--outline-light{border-color:rgba(255,255,255,.45);color:#fff}
.btn--outline-light:hover{background:rgba(255,255,255,.12)}
.btn--sm{padding:.5rem 1rem;font-size:.86rem}

/* ---------- Bloque oscuro (hero / cta) ---------- */
.dark-block{
  background:linear-gradient(165deg, var(--navy) 0%, var(--navy-2) 58%, #22344c 100%);
  color:#fff;position:relative;overflow:hidden;
}
.dark-block::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 88% 8%, rgba(154,91,45,.30), transparent 65%),
    radial-gradient(520px 380px at 4% 92%, rgba(120,160,210,.14), transparent 60%);
}
.dark-block > *{position:relative;z-index:1}

.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.76rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;
  color:#e8c9ad;margin-bottom:1.1rem;
}
.eyebrow::before{content:"";width:28px;height:1.5px;background:var(--accent);display:block}

/* ---------- Encabezados de sección ---------- */
.section-head{max-width:62ch;margin-bottom:clamp(2rem,4vw,3rem)}
.section-head .eyebrow{color:var(--accent)}
.section-head h2{font-size:clamp(1.9rem,3.6vw,2.7rem);margin-bottom:.9rem}
.section-head p{color:var(--ink-2);font-size:1.05rem}

/* ---------- Rejillas de tarjetas ---------- */
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:1.25rem}
.card-lite{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.9rem 1.6rem;text-decoration:none;display:block;
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
a.card-lite:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--accent)}
.card-lite__icon{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent);margin-bottom:1.1rem;
}
.card-lite__icon svg{width:23px;height:23px}
.card-lite h3{font-size:1.2rem;margin-bottom:.55rem}
.card-lite p{color:var(--ink-3);font-size:.94rem;line-height:1.55}
.card-lite__meta{display:inline-block;margin-top:1rem;font-size:.8rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--accent)}

/* ---------- Fichas de libro ---------- */
.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:1.4rem}
.book{
  position:relative;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.7rem 1.6rem 1.5rem;overflow:hidden;
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.book::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--accent);opacity:.75}
.book:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--accent)}
.book[hidden]{display:none}
.book__tag{
  align-self:flex-start;font-size:.7rem;font-weight:700;letter-spacing:.11em;text-transform:uppercase;
  color:var(--accent);background:var(--accent-soft);padding:.3rem .65rem;border-radius:5px;margin-bottom:.9rem;
}
.book h3{font-size:1.28rem;margin-bottom:.35rem}
.book__sub{font-family:var(--serif);font-style:italic;color:var(--ink-3);font-size:.96rem;margin-bottom:.85rem}
.book__desc{color:var(--ink-2);font-size:.95rem;line-height:1.6;flex:1}
.book__meta{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:1.15rem}
.pill{font-size:.74rem;font-weight:600;color:var(--ink-3);border:1px solid var(--line);border-radius:999px;padding:.2rem .6rem}
.book__actions{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.25rem;padding-top:1.15rem;border-top:1px solid var(--line)}

/* ---------- Filtros ---------- */
.filters{display:flex;flex-wrap:wrap;gap:.55rem;margin-bottom:2.25rem}
.chip{
  font-family:var(--sans);font-size:.88rem;font-weight:500;
  padding:.5rem 1.05rem;border-radius:999px;
  border:1px solid var(--line);background:var(--card);color:var(--ink-2);
  cursor:pointer;transition:all .18s ease;
}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}

/* ---------- Texto largo ---------- */
.prose p{color:var(--ink-2);font-size:1.05rem;margin-bottom:1.15rem}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--ink);font-weight:600}
.pullquote{
  font-family:var(--serif);font-size:1.25rem;font-style:italic;color:var(--ink);
  border-left:3px solid var(--accent);padding-left:1.3rem;margin:1.8rem 0;line-height:1.5;
}

/* ---------- Llamada final ---------- */
.cta{text-align:center}
.cta h2{font-size:clamp(1.9rem,4vw,2.8rem);color:#fff;margin-bottom:1rem}
.cta p{color:#b9c8d9;max-width:56ch;margin:0 auto 2rem;font-size:1.05rem}
.cta__actions{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center}

/* ---------- Pie ---------- */
.site-footer{background:var(--navy);color:#94a6bb;padding:3rem 0 2rem;font-size:.92rem}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2.5rem;padding-bottom:2rem;border-bottom:1px solid rgba(255,255,255,.10)}
@media (max-width:760px){.footer__grid{grid-template-columns:1fr;gap:1.75rem}}
.footer__brand{font-family:var(--serif);font-size:1.3rem;font-weight:700;color:#fff;margin-bottom:.6rem}
.site-footer h4{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:.9rem;font-family:var(--sans);font-weight:700}
.site-footer ul{list-style:none;padding:0;margin:0;display:grid;gap:.55rem}
.site-footer a{color:#94a6bb;text-decoration:none;transition:color .18s}
.site-footer a:hover{color:#fff}
.footer__bottom{padding-top:1.5rem;display:flex;flex-wrap:wrap;gap:.75rem;justify-content:space-between;font-size:.85rem}

/* ---------- Migas ---------- */
.crumbs{font-size:.86rem;color:#9fb0c4;margin-bottom:1.5rem}
.crumbs a{text-decoration:none;border-bottom:1px solid transparent;transition:border-color .18s}
.crumbs a:hover{border-color:currentColor}
.crumbs span{opacity:.6;padding-inline:.4rem}

/* ---------- Animación de entrada ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease}
.reveal.is-visible{opacity:1;transform:none}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}