@import url('https://fonts.googleapis.com/css2?family=Crimson+Pro:ital,wght@0,400;0,500;0,600;1,400&family=Public+Sans:wght@400;500;600&display=swap');

/* Paleta que mandó Guillermo (diseñadora externa, 28 sep 2026).
   Los cinco valores base son suyos; los tonos claros de piedra y el
   color de texto se derivan de ellos, no son colores nuevos. */
:root{
  --navy:#043C6B;
  --blue:#076893;
  --slate:#5B89A3;
  --sky:#80D4F9;
  --stone:#C9C5BC;

  --stone-050:#FAF9F6;
  --stone-100:#F2F0EB;
  --stone-200:#E4E1DA;
  --ink:#12283D;
  --ink-soft:#44586B;

  --font-display:'Crimson Pro',Georgia,serif;
  --font-body:'Public Sans',-apple-system,BlinkMacSystemFont,sans-serif;

  --container:1120px;
  --pad-x:clamp(16px,4vw,56px);
  --radius:10px;
  --shadow:0 2px 6px rgba(4,60,107,.06),0 12px 32px rgba(4,60,107,.10);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  margin:0;background:var(--stone-050);color:var(--ink);
  font-family:var(--font-body);font-size:1.0625rem;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}

h1,h2,h3{font-family:var(--font-display);font-weight:500;line-height:1.12;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(2.6rem,6vw,4.4rem)}
h2{font-size:clamp(2rem,4vw,2.9rem)}
h3{font-size:1.6rem}
p{margin:0 0 1em}
.ceja{
  display:block;font-size:.8125rem;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--blue);margin-bottom:.9rem;
}
.lead{font-size:1.2rem;color:var(--ink-soft);max-width:42rem}

/* Aviso de maqueta: se quita al publicar */
.aviso-maqueta{
  background:var(--sky);color:var(--navy);text-align:center;
  font-size:.875rem;font-weight:500;padding:.55rem var(--pad-x);
}

/* Barra superior */
.nav{background:var(--stone-050);border-bottom:1px solid var(--stone-200);position:sticky;top:0;z-index:50}
.nav .container{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:64px}
.nav-marca{font-family:var(--font-display);font-size:1.3rem;color:var(--navy);text-decoration:none}
.nav-links{display:flex;gap:1.6rem;align-items:center}
.nav-links a{color:var(--ink-soft);text-decoration:none;font-size:.9375rem}
.nav-links a:hover{color:var(--blue)}
@media (max-width:760px){.nav-links a:not(.btn){display:none}}

/* Botones */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--font-body);font-size:.9375rem;font-weight:600;
  padding:.8rem 1.4rem;border-radius:999px;text-decoration:none;
  border:1.5px solid transparent;transition:background .2s,color .2s,border-color .2s;
}
.btn-primario{background:var(--blue);color:#fff}
.btn-primario:hover{background:var(--navy)}
.btn-claro{background:var(--sky);color:var(--navy)}
.btn-claro:hover{background:#fff}
.btn-borde{border-color:var(--stone);color:var(--ink-soft);background:transparent;cursor:default}
.btn-chico{padding:.5rem 1rem;font-size:.875rem}
.nav-links .btn{color:#fff}

/* Portada */
.hero{background:var(--navy);color:#fff;overflow:hidden}
.hero .container{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);
  gap:clamp(2rem,5vw,5rem);align-items:center;
  padding-top:clamp(3rem,7vw,6rem);padding-bottom:clamp(3rem,7vw,6rem);
}
.hero .ceja{color:var(--sky)}
.hero h1{color:#fff}
.hero-joyas{
  font-family:var(--font-display);font-size:1.35rem;color:var(--sky);
  margin:1.1rem 0 1.4rem;display:flex;flex-wrap:wrap;gap:.35rem .9rem;align-items:center;
}
.hero-joyas span+span::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--stone);margin-right:.9rem;vertical-align:middle}
.hero p{color:rgba(255,255,255,.86)}
.hero-autores{font-size:.9375rem;color:rgba(255,255,255,.7);margin-bottom:1.8rem}
.hero-estado{
  display:block;font-size:.9375rem;color:rgba(255,255,255,.8);
  border-left:2px solid var(--sky);padding-left:.9rem;margin:1.6rem 0 1.8rem;
}
.hero-libro{justify-self:center;max-width:380px;width:100%}
.hero-libro img{filter:drop-shadow(0 30px 40px rgba(0,0,0,.35));transform:rotate(-2deg)}
@media (max-width:820px){
  .hero .container{grid-template-columns:1fr}
  .hero-libro{order:-1;max-width:240px}
}

/* Secciones */
section{padding:clamp(3.5rem,8vw,6.5rem) 0}
section+section{border-top:1px solid var(--stone-200)}
.band{background:var(--stone-100)}
.centrado{text-align:center}
.centrado .lead{margin-left:auto;margin-right:auto}

.intro .container{max-width:820px}
.intro p.grande{font-family:var(--font-display);font-size:clamp(1.45rem,2.6vw,1.85rem);line-height:1.4;color:var(--navy)}

/* Las tres joyas */
.joyas{display:grid;gap:clamp(2.5rem,5vw,4rem);margin-top:3rem}
.joya{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
.joya:nth-child(even) .joya-foto{order:2}
.joya-foto img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.joya-num{font-family:var(--font-display);font-size:1.1rem;color:var(--slate);font-style:italic;display:block;margin-bottom:.3rem}
.joya h3{color:var(--navy);margin-bottom:.4rem}
.joya-parte{font-size:.875rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--blue);margin-bottom:1rem}
@media (max-width:760px){
  .joya{grid-template-columns:1fr}
  .joya:nth-child(even) .joya-foto{order:0}
}

/* Cita */
.cita{background:var(--blue);color:#fff;border-top:0}
.cita blockquote{margin:0 auto;max-width:860px;text-align:center}
.cita blockquote p{font-family:var(--font-display);font-size:clamp(1.7rem,3.6vw,2.6rem);line-height:1.3;margin:0 0 1.2rem}
.cita cite{font-style:normal;font-size:.9375rem;color:var(--sky)}
.cita+section{border-top:0}

/* Dentro del libro */
.dentro .container{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,5vw,4rem);align-items:start}
.dentro-foto{position:sticky;top:96px}
.dentro-foto img{border-radius:var(--radius);box-shadow:var(--shadow)}
@media (max-width:820px){.dentro-foto{position:static}}
/* Índice por partes: prefacio y epílogo son filas fijas, cada parte se despliega */
.indice{margin:1.5rem 0 0;border-top:1px solid var(--stone-200)}
.indice-fila,.indice-parte{border-bottom:1px solid var(--stone-200)}
.indice-fila{padding:.9rem 0}
.indice .t{display:block;font-family:var(--font-display);font-size:1.2rem;line-height:1.3;color:var(--ink)}
.indice .a{display:block;font-size:.875rem;color:var(--ink-soft);margin-top:.2rem}
.indice .parte{display:block;font-size:.8125rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);margin-bottom:.2rem}
.indice-parte summary{
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
  padding:.9rem 0;cursor:pointer;list-style:none;
}
.indice-parte summary::-webkit-details-marker{display:none}
.indice-parte summary::after{
  content:"";flex:none;width:9px;height:9px;margin-right:.35rem;
  border-right:2px solid var(--blue);border-bottom:2px solid var(--blue);
  transform:translateY(-2px) rotate(45deg);transition:transform .2s;
}
.indice-parte[open] summary::after{transform:translateY(2px) rotate(-135deg)}
.indice-parte summary:hover .t{color:var(--blue)}
.indice-parte summary:focus-visible{outline:2px solid var(--blue);outline-offset:4px;border-radius:4px}
.indice-parte ul{list-style:none;margin:0;padding:0 0 .6rem 1.1rem;border-left:2px solid var(--stone-200)}
.indice-parte li{padding:.6rem 0}
.indice-parte li .t{font-size:1.1rem}
@media (max-width:820px){.dentro .container{grid-template-columns:1fr}}

/* Autores */
.autores{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.25rem;margin-top:3rem}
.autor{background:var(--stone-050);border:1px solid var(--stone-200);border-radius:var(--radius);padding:1.6rem 1.4rem}
.autor-inicial{
  width:56px;height:56px;border-radius:50%;background:var(--navy);color:var(--sky);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-display);font-size:1.5rem;margin-bottom:1.1rem;
}
.autor img{width:56px;height:56px;border-radius:50%;object-fit:cover;margin-bottom:1.1rem}
.autor h3{font-size:1.35rem;color:var(--navy)}
.autor-rol{font-size:.8125rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);margin:.35rem 0 .8rem}
.autor p{font-size:.9375rem;color:var(--ink-soft);margin:0}
.autor a{font-size:.9375rem;font-weight:600;display:inline-block;margin-top:.8rem}
@media (max-width:980px){.autores{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.autores{grid-template-columns:1fr}}

/* Lectores */
.lectores{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.25rem;margin-top:3rem}
.lector{margin:0;background:#fff;border-radius:var(--radius);padding:1.6rem;box-shadow:var(--shadow)}
.lector p{font-family:var(--font-display);font-size:1.25rem;line-height:1.45;color:var(--ink)}
.lector cite{font-style:normal;font-size:.875rem;color:var(--ink-soft)}
@media (max-width:860px){.lectores{grid-template-columns:1fr}}

/* Ficha y dónde conseguirlo */
.compra .container{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,5vw,4rem)}
.ficha{margin:1.5rem 0 0;display:grid;grid-template-columns:auto 1fr;gap:.65rem 1.5rem;font-size:.9375rem}
.ficha dt{font-weight:600;color:var(--ink-soft)}
.ficha dd{margin:0}
.tiendas{display:grid;gap:.75rem;margin:1.5rem 0}
.tienda{
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
  background:#fff;border:1px solid var(--stone-200);border-radius:var(--radius);padding:1rem 1.2rem;
}
.tienda strong{font-weight:600}
.tienda span{font-size:.875rem;color:var(--ink-soft)}
@media (max-width:820px){.compra .container{grid-template-columns:1fr}}

/* Cierre */
.cierre{background:var(--navy);color:#fff;text-align:center;border-top:0}
.cierre h2{color:#fff}
.cierre p{color:rgba(255,255,255,.85);max-width:36rem;margin:1rem auto 2rem}

/* Pie */
footer{background:var(--ink);color:rgba(255,255,255,.72);font-size:.875rem;padding:2.5rem 0}
footer .container{display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem 2rem}
footer a{color:rgba(255,255,255,.9)}

/* Texto de ejemplo: se ve a propósito, para que nadie lo publique sin darse cuenta */
.ejemplo{background:rgba(128,212,249,.28);border-radius:3px;padding:0 .2em}

/* ---------------------------------------------------------------
   Página de estructura (estructura-del-sitio.html)
   Misma maqueta que index.html; los textos que pusimos nosotros se
   cambian por un "hueco" que dice qué va ahí y cuántas palabras caben.
   --------------------------------------------------------------- */

/* Hueco: recuadro punteado con qué va, cuánto cabe y una nota */
.hueco{
  display:block;background:#fff;border:2px dashed var(--slate);border-radius:8px;
  padding:.75rem .95rem;margin:0 0 1rem;text-align:left;
  font-family:var(--font-body);font-size:.9375rem;line-height:1.5;color:var(--ink);
  overflow-wrap:anywhere;
}
.hueco-que{display:block;font-size:.75rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.hueco-cuanto{display:block;font-family:var(--font-display);font-size:1.3rem;line-height:1.25;color:var(--navy);margin:.15rem 0}
.hueco-nota{display:block;font-size:.875rem;color:var(--ink-soft);margin-top:.25rem}
.hero .hueco,.cierre .hueco{border-color:var(--sky)}
.centrado .hueco,.cierre .hueco{max-width:34rem;margin-left:auto;margin-right:auto}
.cierre .hueco{margin-bottom:1rem}
.cierre .btn{margin-top:1rem}
.autor .hueco{margin:.7rem 0 0;padding:.6rem .7rem}
.autor .hueco-cuanto{font-size:1.15rem}
.lector .hueco:last-child{margin-bottom:0}
.indice-parte .hueco{margin:0 0 1rem}
.hueco-chip{
  display:inline-block;background:#fff;border:2px dashed var(--slate);border-radius:6px;
  padding:.1rem .55rem;font-size:.875rem;font-weight:600;color:var(--navy);
}

/* Franja que numera y explica cada sección */
.guia-wrap{max-width:var(--container);margin:0 auto;padding:0 var(--pad-x)}
.guia{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:.2rem .7rem;text-align:left;
  background:#fff;color:var(--ink);border-left:4px solid var(--sky);border-radius:6px;
  padding:.8rem 1rem;margin-bottom:2.2rem;font-size:.9375rem;line-height:1.5;
  box-shadow:var(--shadow);
}
.guia-n{font-size:.8125rem;font-weight:600;letter-spacing:.1em;color:var(--blue)}
.guia-t{font-weight:600;color:var(--navy)}
.guia-d{flex-basis:100%;color:var(--ink-soft)}
.hero .guia-wrap{padding-top:1.5rem}
.hero .guia{margin-bottom:0}
.estructura .hero .container{padding-top:clamp(2rem,5vw,3.5rem)}

/* Apunte chico: lo que ponemos nosotros o de dónde sale un texto */
.est-apunte{display:block;font-size:.8125rem;line-height:1.45;color:var(--ink-soft);font-style:italic;margin:.8rem 0 1rem}
.hero .est-apunte{color:rgba(255,255,255,.72)}

/* Encabezado de la página de estructura */
.est-intro .container{max-width:880px}
.est-intro h1{font-size:clamp(2rem,5vw,3.1rem);color:var(--navy);margin-bottom:1rem}
.est-leyenda{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1rem;margin:2rem 0}
.est-ley .hueco{margin:0;height:100%}
.est-listo{height:100%;background:var(--stone-100);border-radius:8px;padding:.75rem .95rem;font-size:.9375rem;line-height:1.5}
.est-listo strong{display:block;font-family:var(--font-display);font-size:1.3rem;font-weight:500;color:var(--navy)}
.est-listo span{display:block;font-size:.875rem;color:var(--ink-soft);margin-top:.25rem}
.est-escala,.est-lista{list-style:none;margin:0;padding:0;border-top:1px solid var(--stone-200)}
.est-escala li,.est-lista li{
  display:grid;grid-template-columns:9rem minmax(0,1fr);gap:.2rem 1.2rem;
  padding:.75rem 0;border-bottom:1px solid var(--stone-200);font-size:.9375rem;
}
.est-escala b,.est-lista b{font-weight:600;color:var(--navy)}
.est-escala span,.est-lista span{color:var(--ink-soft)}
.est-pie{font-size:.875rem;color:var(--ink-soft);margin:1rem 0 0}
.est-falta .container{max-width:880px}
.est-falta h2{color:var(--navy);margin-bottom:1.5rem}
@media (max-width:640px){
  .est-leyenda{grid-template-columns:1fr}
  .est-escala li,.est-lista li{grid-template-columns:1fr}
  .hueco-cuanto{font-size:1.2rem}
}