/* =========================================================
   ALGUNAS ENCÍCLICAS — sistema de diseño "Carta sellada"
   Tipos: Spectral (display) · Source Serif 4 (cuerpo) · Cinzel (inscripción/sello)
   ========================================================= */

:root{
  --pergamino:      #F1E8D2;
  --pergamino-osc:  #E4D6B4;
  --pergamino-mas-osc: #D8C79C;
  --tinta:          #2A2118;
  --tinta-suave:    #534534;
  --rojo-sello:     #8C2A33;
  --rojo-sello-osc: #6E1F27;
  --oro:            #A6803C;
  --oro-claro:      #C7A35C;
  --azul-noche:     #16212B;
  --azul-noche-2:   #1F2E3A;
  --verde-palabra:  #41513B;
  --borde:          rgba(42,33,24,.18);
  --sombra:         0 10px 30px rgba(22,17,10,.18);
  --radio:          2px;
  --max:            1180px;
  --serif-display:  "Spectral", "Iowan Old Style", Georgia, serif;
  --serif-body:      "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --inscripcion:     "Cinzel", "Trajan Pro", Georgia, serif;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--pergamino);
  color:var(--tinta);
  font-family:var(--serif-body);
  font-size:18px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
}

img{ max-width:100%; display:block; }
a{ color:var(--rojo-sello); text-decoration:none; }
a:focus-visible, button:focus-visible, .boton:focus-visible{
  outline:3px solid var(--oro); outline-offset:3px;
}

/* Textura de fondo (pergamino) muy sutil */
body{
  background-image:
    radial-gradient(circle at 12% 8%, rgba(166,128,60,.10), transparent 45%),
    radial-gradient(circle at 88% 92%, rgba(140,42,51,.07), transparent 45%),
    url('imagen/textura-pergamino.svg');
  background-size:auto, auto, 480px 480px;
}

.envoltura{ max-width:var(--max); margin:0 auto; padding:0 28px; }

h1,h2,h3,h4{ font-family:var(--serif-display); color:var(--tinta); font-weight:600; margin:0 0 .5em; }

/* ---------- ENCABEZADO ---------- */
.cabecera{
  position:sticky; top:0; z-index:40;
  background:linear-gradient(180deg, var(--pergamino) 85%, rgba(241,232,210,0));
  backdrop-filter:blur(2px);
  border-bottom:1px solid var(--borde);
}
.cabecera .envoltura{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 28px;
}
.marca{
  display:flex; align-items:center; gap:12px;
  font-family:var(--inscripcion); letter-spacing:.06em;
  font-size:15px; color:var(--tinta); text-transform:uppercase;
}
.marca .sello-mini{
  width:34px;height:34px;border-radius:50%;
  background:radial-gradient(circle at 32% 28%, var(--oro-claro), var(--rojo-sello) 62%, var(--rojo-sello-osc));
  border:1px solid rgba(0,0,0,.25);
  display:flex;align-items:center;justify-content:center;
  color:var(--pergamino); font-size:15px; box-shadow:inset 0 0 6px rgba(0,0,0,.35);
}
.marca strong{ font-weight:700; }
.marca span.sub{ display:block; font-family:var(--serif-body); text-transform:none; letter-spacing:0; font-size:11px; color:var(--tinta-suave); }

.nav-vuelta{
  font-family:var(--serif-body); font-style:italic; font-size:15px; color:var(--rojo-sello);
  border-bottom:1px dotted var(--rojo-sello);
}
.nav-vuelta:hover{ color:var(--rojo-sello-osc); }

/* ---------- ETIQUETAS / EYEBROW ---------- */
.eyebrow{
  font-family:var(--inscripcion); text-transform:uppercase; letter-spacing:.18em;
  font-size:12.5px; color:var(--oro); margin:0 0 14px; display:block;
}

/* ---------- PASTILLAS DE PILAR ---------- */
.pilares{ display:flex; gap:10px; flex-wrap:wrap; margin:26px 0 6px; }
.pilar{
  font-family:var(--inscripcion); font-size:11.5px; letter-spacing:.12em; text-transform:uppercase;
  padding:9px 16px; border:1px solid var(--oro); border-radius:30px; color:var(--tinta-suave);
  background:rgba(166,128,60,.08); cursor:pointer; transition:.25s ease;
}
.pilar:hover, .pilar.activo{ background:var(--rojo-sello); color:var(--pergamino); border-color:var(--rojo-sello); }

/* ---------- HÉROE ---------- */
.heroe{ padding:64px 0 30px; position:relative; }
.heroe .envoltura{ max-width:880px; }
.heroe-titulo{
  font-size:clamp(40px,7vw,74px); line-height:1.04; margin:0 0 .35em;
  font-style:italic; font-weight:600;
}
.heroe-titulo em{ font-style:normal; color:var(--rojo-sello); }
.heroe-lema{
  font-family:var(--serif-body); font-size:21px; color:var(--tinta-suave);
  max-width:680px; margin:0 0 28px;
}
.linea-oro{ width:120px; height:2px; background:linear-gradient(90deg,var(--oro),transparent); margin:28px 0; }

/* ---------- BOTONES ---------- */
.boton{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--inscripcion); text-transform:uppercase; letter-spacing:.08em; font-size:12.5px;
  padding:13px 22px; border-radius:1px; border:1px solid var(--tinta);
  background:transparent; color:var(--tinta); cursor:pointer; transition:.2s ease;
}
.boton:hover{ background:var(--tinta); color:var(--pergamino); }
.boton.primario{ background:var(--rojo-sello); color:var(--pergamino); border-color:var(--rojo-sello); }
.boton.primario:hover{ background:var(--rojo-sello-osc); border-color:var(--rojo-sello-osc); }
.boton.oro{ border-color:var(--oro); color:var(--oro-claro); }
.boton.oro:hover{ background:var(--oro); color:var(--azul-noche); border-color:var(--oro); }
.fila-botones{ display:flex; gap:14px; flex-wrap:wrap; margin-top:10px; }

/* ---------- LÍNEA DE TIEMPO (ÍNDICE) ---------- */
.archivo{ padding:18px 0 90px; }
.archivo-titulo{ font-size:clamp(28px,4vw,40px); margin-bottom:6px; }
.archivo-intro{ max-width:680px; color:var(--tinta-suave); margin-bottom:48px; }

.linea-tiempo{ position:relative; }
.linea-tiempo::before{
  content:""; position:absolute; left:74px; top:6px; bottom:6px; width:2px;
  background:repeating-linear-gradient(to bottom, var(--oro) 0 8px, transparent 8px 14px);
}
@media (max-width:680px){ .linea-tiempo::before{ left:30px; } }

.carta{
  position:relative; display:grid; grid-template-columns:148px 1fr; gap:26px;
  margin-bottom:42px; opacity:0; transform:translateY(14px);
  animation:aparecer .6s ease forwards;
}
.carta:nth-child(1){animation-delay:.02s}
.carta:nth-child(2){animation-delay:.08s}
.carta:nth-child(3){animation-delay:.14s}
.carta:nth-child(4){animation-delay:.2s}
.carta:nth-child(5){animation-delay:.26s}
.carta:nth-child(6){animation-delay:.32s}
.carta:nth-child(7){animation-delay:.38s}
@keyframes aparecer{ to{ opacity:1; transform:none; } }
@media (prefers-reduced-motion: reduce){ .carta{ opacity:1; transform:none; animation:none; } }

@media (max-width:680px){ .carta{ grid-template-columns:60px 1fr; gap:14px; } }

.carta-marca{ display:flex; flex-direction:column; align-items:center; padding-top:6px; }
.sello{
  width:88px;height:88px;border-radius:50%; position:relative; z-index:2;
  background:radial-gradient(circle at 32% 26%, var(--oro-claro) 0%, var(--rojo-sello) 55%, var(--rojo-sello-osc) 100%);
  border:2px solid rgba(0,0,0,.22);
  box-shadow: var(--sombra), inset 0 0 14px rgba(0,0,0,.35);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  color:var(--pergamino); transform:rotate(-4deg);
}
@media (max-width:680px){ .sello{ width:54px;height:54px; } }
.sello .simbolo{ font-size:30px; line-height:1; }
@media (max-width:680px){ .sello .simbolo{ font-size:20px; } }
.sello .anio{ font-family:var(--inscripcion); font-size:10px; letter-spacing:.04em; margin-top:2px; }
@media (max-width:680px){ .sello .anio{ display:none; } }
.carta-marca .papa{
  font-family:var(--inscripcion); font-size:11px; text-align:center; color:var(--tinta-suave);
  margin-top:10px; letter-spacing:.04em; text-transform:uppercase; line-height:1.4;
}

.papel{
  background:var(--pergamino-osc); border:1px solid var(--borde); padding:30px 34px;
  box-shadow:var(--sombra); position:relative;
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%); /* placeholder, deckle via ::after */
}
.papel::before{
  content:""; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(135deg, rgba(255,255,255,.25), transparent 35%);
}
.papel h3{ font-size:27px; margin-bottom:4px; }
.papel .latin{ font-style:italic; color:var(--rojo-sello); }
.papel .subt{ font-family:var(--serif-body); font-style:italic; color:var(--tinta-suave); font-size:15.5px; margin-bottom:10px;}
.papel p.resumen{ margin:8px 0 16px; color:var(--tinta); }
.tag-fila{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:16px; }
.tag{
  font-family:var(--inscripcion); font-size:10.5px; letter-spacing:.1em; text-transform:uppercase;
  padding:4px 10px; border:1px solid var(--verde-palabra); color:var(--verde-palabra); border-radius:20px;
}
.papel .enlaces{ display:flex; gap:18px; flex-wrap:wrap; align-items:center; }
.enlace-texto{
  font-family:var(--inscripcion); font-size:12px; letter-spacing:.07em; text-transform:uppercase;
  display:inline-flex; align-items:center; gap:6px; color:var(--tinta); border-bottom:1px solid var(--oro);
  padding-bottom:2px;
}
.enlace-texto:hover{ color:var(--rojo-sello); border-color:var(--rojo-sello); }

.carta[data-tags]{ transition:opacity .35s ease, filter .35s ease; }
.carta.oculta{ opacity:.18; filter:grayscale(.6); }

/* ---------- PIE ---------- */
.pie{ background:var(--azul-noche); color:#E7DCC2; padding:60px 0 36px; }
.pie .envoltura{ display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:40px; }
@media (max-width:760px){ .pie .envoltura{ grid-template-columns:1fr; gap:30px; } }
.pie h4{ color:var(--oro-claro); font-size:17px; }
.pie p, .pie li{ color:#C8BC9C; font-size:15px; line-height:1.7; }
.pie a{ color:#E7DCC2; border-bottom:1px dotted var(--oro); }
.pie a:hover{ color:var(--oro-claro); }
.pie ul{ list-style:none; padding:0; margin:0; }
.pie li{ margin-bottom:9px; }
.cita-pie{ font-family:var(--serif-display); font-style:italic; font-size:22px; color:#EFE6CC; max-width:520px; }
.linea-pie-final{ border-top:1px solid rgba(231,220,194,.18); margin-top:40px; padding-top:20px; }
.linea-pie-final .envoltura{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; grid-template-columns:none; }
.linea-pie-final p{ font-size:12.5px; color:#8C9CA6; margin:0; }

/* =========================================================
   PÁGINAS DE TEMARIO
   ========================================================= */
.cab-doc{ padding:50px 0 10px; }
.migaja{ font-family:var(--inscripcion); font-size:12px; letter-spacing:.1em; text-transform:uppercase; color:var(--tinta-suave); }
.migaja a{ color:var(--rojo-sello); }

.doc-heroe{ display:grid; grid-template-columns:140px 1fr; gap:34px; align-items:flex-start; padding:14px 0 36px; border-bottom:1px solid var(--borde); }
@media (max-width:680px){ .doc-heroe{ grid-template-columns:1fr; } .doc-heroe .carta-marca{ flex-direction:row; gap:14px; } }
.doc-heroe h1{ font-size:clamp(34px,5.4vw,56px); font-style:italic; margin-bottom:.1em; }
.doc-heroe .titulo-es{ font-family:var(--serif-body); font-style:normal; font-size:20px; color:var(--tinta-suave); margin-bottom:14px; }
.ficha{ display:flex; gap:22px; flex-wrap:wrap; margin:18px 0 22px; font-family:var(--inscripcion); font-size:12px; letter-spacing:.05em; color:var(--tinta-suave); text-transform:uppercase; }
.ficha b{ color:var(--tinta); }

.seccion{ padding:54px 0; border-bottom:1px solid var(--borde); }
.seccion:last-of-type{ border-bottom:none; }
.num-sec{
  display:flex; align-items:center; gap:16px; margin-bottom:22px;
}
.num-sec .num{
  font-family:var(--inscripcion); font-size:13px; color:var(--pergamino); background:var(--rojo-sello);
  width:34px;height:34px;border-radius:50%; display:flex;align-items:center;justify-content:center; flex:none;
}
.num-sec h2{ font-size:clamp(24px,3.4vw,32px); margin:0; }
.seccion > .envoltura > p, .seccion .prosa p{ max-width:760px; }
.prosa{ max-width:760px; }
.prosa p{ margin:0 0 18px; }
.prosa strong{ color:var(--rojo-sello-osc); }

.lista-desafios{ display:grid; gap:18px; grid-template-columns:repeat(2,1fr); max-width:980px; }
@media (max-width:760px){ .lista-desafios{ grid-template-columns:1fr; } }
.desafio{ background:var(--pergamino-osc); border-left:4px solid var(--rojo-sello); padding:20px 22px; box-shadow:var(--sombra); }
.desafio h4{ font-size:18px; margin-bottom:8px; }
.desafio p{ margin:0; color:var(--tinta-suave); font-size:16px; }

.cita-grande{
  font-family:var(--serif-display); font-style:italic; font-size:clamp(22px,3vw,30px);
  color:var(--rojo-sello-osc); border-left:3px solid var(--oro); padding:6px 0 6px 26px; margin:32px 0;
  max-width:780px; line-height:1.4;
}
.cita-grande cite{ display:block; font-family:var(--inscripcion); font-style:normal; font-size:12.5px;
  letter-spacing:.08em; text-transform:uppercase; color:var(--tinta-suave); margin-top:10px; }

.biblia-grid{ display:grid; gap:14px; grid-template-columns:repeat(2,1fr); max-width:980px; }
@media (max-width:760px){ .biblia-grid{ grid-template-columns:1fr; } }
.biblia-item{ background:var(--pergamino-osc); border:1px solid var(--borde); padding:16px 18px; }
.biblia-item p{ margin:0 0 8px; color:var(--tinta-suave); font-size:15.5px; }
.versiculo{
  font-family:var(--inscripcion); font-weight:600; font-size:13px; letter-spacing:.04em;
  color:var(--rojo-sello); border-bottom:1px dotted var(--rojo-sello); padding-bottom:1px;
}
.versiculo:hover{ color:var(--rojo-sello-osc); border-color:var(--rojo-sello-osc); }
.versiculo::after{ content:" ↗"; font-size:11px; }

/* ---------- BLOQUE DE EXAMEN (oscuro) ---------- */
.examen{ background:var(--azul-noche); color:#EDE4CC; padding:64px 0; position:relative; }
.examen::before{
  content:""; position:absolute; inset:0; opacity:.5; pointer-events:none;
  background:radial-gradient(circle at 80% 0%, rgba(166,128,60,.12), transparent 50%);
}
.examen .num-sec .num{ background:var(--oro); color:var(--azul-noche); }
.examen h2{ color:#F4ECD4; }
.examen .eyebrow{ color:var(--oro-claro); }
.examen-intro{ max-width:740px; color:#C9BE9F; font-size:17px; margin-bottom:30px; }
.examen-lista{ list-style:none; margin:0; padding:0; max-width:820px; counter-reset:preg; }
.examen-lista li{
  counter-increment:preg; position:relative; padding:18px 0 18px 46px; border-top:1px solid rgba(237,228,204,.16);
  font-family:var(--serif-display); font-style:italic; font-size:clamp(18px,2.3vw,21px); line-height:1.55; color:#F4ECD4;
}
.examen-lista li:first-child{ border-top:none; }
.examen-lista li::before{
  content:counter(preg,decimal-leading-zero); position:absolute; left:0; top:18px;
  font-family:var(--inscripcion); font-style:normal; font-size:13px; color:var(--oro-claro);
}

/* ---------- PROFUNDIZAR ---------- */
.profundizar{ padding:60px 0 80px; }
.recursos{ display:grid; gap:20px; grid-template-columns:repeat(3,1fr); }
@media (max-width:880px){ .recursos{ grid-template-columns:1fr; } }
.recurso{ background:var(--pergamino-osc); border:1px solid var(--borde); padding:26px; text-align:left; }
.recurso .icono{ font-size:26px; color:var(--rojo-sello); margin-bottom:10px; }
.recurso h4{ font-size:17px; margin-bottom:8px; }
.recurso p{ font-size:14.5px; color:var(--tinta-suave); margin:0 0 16px; }
.nota-pdf{ font-size:12.5px; color:var(--tinta-suave); font-style:italic; margin-top:30px; max-width:780px; }

.cierre{ background:var(--rojo-sello); color:var(--pergamino); padding:56px 0; text-align:left; }
.cierre blockquote{ font-family:var(--serif-display); font-style:italic; font-size:clamp(22px,3.4vw,30px); margin:0 0 18px; max-width:840px; }
.cierre p.firma{ font-family:var(--inscripcion); font-size:12.5px; letter-spacing:.1em; text-transform:uppercase; color:#EAD9AE; }

/* utilitario */
.centro{ text-align:center; }
.sr-only{ position:absolute; width:1px;height:1px; overflow:hidden; clip:rect(0,0,0,0); }