/* Arbustivas Modernas — hoja de estilos compartida
   Paleta y convenciones de accesibilidad heredadas del paquete de la
   Filial Este para público de 60 a 90 años: contraste verificado AAA,
   tipografía grande, sin dependencias externas (funciona sin internet). */

:root{
  --tinta:#1E1215;
  --tinta-suave:#4A2E33;
  --papel:#FCEFF1;
  --papel-hondo:#F6DFE4;
  --papel-card:#FFFFFF;
  --bordo:#5A182C;
  --follaje:#2E4B27;
  --linea:#E3C3CB;
  --medida:70ch;
  --radio:14px;
}

*{box-sizing:border-box}

html{font-size:20px}

body{
  margin:0;
  background:var(--papel);
  color:var(--tinta);
  font-family:Georgia,'Palatino Linotype','Book Antiqua',serif;
  font-size:1.05rem;
  line-height:1.66;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:Georgia,'Palatino Linotype',serif;
  font-weight:700;
  line-height:1.2;
  color:var(--tinta);
  margin:0 0 .5em;
}

a{color:var(--bordo)}
a:hover,a:focus-visible{color:var(--tinta)}
a:focus-visible,button:focus-visible{outline:3px solid var(--bordo);outline-offset:2px}

.envoltorio{
  max-width:var(--medida);
  margin:0 auto;
  padding:0 1.4rem;
}

.envoltorio-ancho{
  max-width:1200px;
  margin:0 auto;
  padding:0 1.4rem;
}

/* ---------- encabezado / eyebrow ---------- */
.eyebrow{
  font-family:Georgia,serif;
  font-variant:small-caps;
  letter-spacing:.08em;
  font-size:1rem;
  color:var(--tinta-suave);
}

header.hero{
  background:var(--papel-hondo);
  border-bottom:1px solid var(--linea);
  padding:2.6rem 0 2rem;
}

header.hero h1{font-size:2.1rem}
header.hero h1 em{font-style:italic;color:var(--bordo)}
header.hero .bajada{max-width:60ch;color:var(--tinta-suave);font-size:1.1rem;margin-top:.6rem}

/* ---------- navegación ---------- */
nav.migas{font-size:.92rem;padding:1rem 0;color:var(--tinta-suave)}
nav.migas a{text-decoration:none}
nav.migas a:hover{text-decoration:underline}

.volver{
  display:inline-block;margin:2rem 0;
  font-size:.95rem;text-decoration:none;
  border:1px solid var(--linea);border-radius:999px;
  padding:.5rem 1.1rem;color:var(--bordo);
}
.volver:hover{background:var(--papel-hondo)}

/* ---------- tarjetas de índice (index.html) ---------- */
.tarjetas{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:1.4rem;margin:2.2rem 0;
}
.tarjeta{
  background:var(--papel-card);
  border:1px solid var(--linea);
  border-radius:var(--radio);
  padding:1.6rem;
  text-decoration:none;
  color:var(--tinta);
  display:block;
  box-shadow:0 2px 10px rgba(90,24,44,.06);
  transition:transform .15s ease, box-shadow .15s ease;
}
.tarjeta:hover,.tarjeta:focus-visible{
  transform:translateY(-3px);
  box-shadow:0 8px 22px rgba(90,24,44,.14);
  color:var(--tinta);
}
.tarjeta .num{
  font-size:.85rem;color:var(--bordo);font-variant:small-caps;letter-spacing:.06em;
}
.tarjeta h2{font-size:1.35rem;margin:.35rem 0 .5rem}
.tarjeta p{margin:0;color:var(--tinta-suave);font-size:.98rem}

/* ---------- tabla de contenidos (clase.html) ---------- */
.indice{
  background:var(--papel-card);
  border:1px solid var(--linea);
  border-radius:var(--radio);
  padding:1.4rem 1.6rem;
  margin:2rem 0;
}
.indice h2{font-size:1.05rem;font-variant:small-caps;letter-spacing:.05em;color:var(--tinta-suave);margin-bottom:.8rem}
.indice ol{margin:0;padding-left:1.3rem}
.indice li{margin:.35rem 0}
.indice a{text-decoration:none}
.indice a:hover{text-decoration:underline}

/* ---------- secciones de la clase ---------- */
section.tema{
  padding:2.4rem 0;
  border-top:1px solid var(--linea);
}
section.tema:first-of-type{border-top:none}
.tema .rango{
  font-size:.92rem;color:var(--tinta-suave);font-variant:small-caps;letter-spacing:.04em;
}
.tema h2{font-size:1.6rem;margin-top:.2rem}
.tema ul{padding-left:1.3rem}
.tema li{margin:.4rem 0}
.tema p{margin:0 0 1rem}

.nota{
  background:var(--papel-hondo);
  border-left:4px solid var(--bordo);
  border-radius:6px;
  padding:1.1rem 1.3rem;
  font-size:.98rem;
  color:var(--tinta-suave);
  margin:1.6rem 0;
}

/* ---------- fotos dentro de la clase ---------- */
.fotos-tema{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:.9rem;margin:1.4rem 0 1.8rem;
}
.foto-card{text-align:center;text-decoration:none;color:var(--tinta)}
.foto-card img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:10px;border:1px solid var(--linea);
  display:block;
}
.foto-card span{
  display:block;margin-top:.4rem;font-size:.88rem;color:var(--tinta-suave);
  font-variant:small-caps;letter-spacing:.03em;
}
.foto-card:hover img{border-color:var(--bordo)}

/* ---------- galería (galeria.html) ---------- */
.grupo-galeria{margin:2.6rem 0}
.grupo-galeria h2{font-size:1.4rem;border-bottom:1px solid var(--linea);padding-bottom:.5rem}
.grid-galeria{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));
  gap:1.2rem;margin-top:1.2rem;
}
.item-galeria{
  background:var(--papel-card);border:1px solid var(--linea);border-radius:var(--radio);
  overflow:hidden;text-decoration:none;color:var(--tinta);
}
.item-galeria img{width:100%;aspect-ratio:1/1;object-fit:cover;display:block}
.item-galeria figcaption{padding:.7rem .9rem}
.item-galeria .nombre{font-weight:700;font-size:1.02rem}
.item-galeria .detalle{display:block;font-size:.85rem;color:var(--tinta-suave);margin-top:.15rem}

/* ---------- visor de diapositivas (presentacion.html) ---------- */
.grid-slides{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:.8rem;margin:2rem 0;
}
.mini-slide{
  border:1px solid var(--linea);border-radius:10px;overflow:hidden;
  cursor:zoom-in;background:var(--papel-card);position:relative;
}
.mini-slide img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover}
.mini-slide .n{
  position:absolute;bottom:0;right:0;background:rgba(30,18,21,.72);color:#fff;
  font-size:.72rem;padding:2px 7px;border-top-left-radius:8px;
}
.mini-slide:hover,.mini-slide:focus-visible{outline:2px solid var(--bordo)}

.visor-fondo{
  position:fixed;inset:0;background:rgba(20,10,12,.92);
  display:none;align-items:center;justify-content:center;z-index:50;
  flex-direction:column;
}
.visor-fondo.activo{display:flex}
.visor-fondo img{max-width:92vw;max-height:80vh;border-radius:6px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.visor-pie{color:#F6DFE4;margin-top:1rem;font-size:1rem;text-align:center}
.visor-cerrar,.visor-flecha{
  position:absolute;background:transparent;border:2px solid #F6DFE4;color:#F6DFE4;
  border-radius:999px;width:48px;height:48px;font-size:1.4rem;cursor:pointer;
}
.visor-cerrar{top:20px;right:24px}
.visor-flecha.izq{left:20px;top:50%;transform:translateY(-50%)}
.visor-flecha.der{right:20px;top:50%;transform:translateY(-50%)}
.visor-cerrar:hover,.visor-flecha:hover{background:#F6DFE4;color:var(--tinta)}

footer.pie{
  border-top:1px solid var(--linea);
  margin-top:3rem;padding:2rem 0 3rem;
  color:var(--tinta-suave);font-size:.92rem;
}

@media (max-width:640px){
  html{font-size:19px}
  header.hero{padding:2rem 0 1.6rem}
  header.hero h1{font-size:1.7rem}
}