/* Oposan · prototipo B (web estática) · «Editorial corporativo»
   Tokens de fabrica/web/rediseno_v2/tokens_web_v2.css; animaciones según 04_animaciones.md. */
@font-face{font-family:'Fraunces';font-weight:100 900;font-style:normal;font-display:swap;src:url(compartido/fuentes/Fraunces-VF.woff2) format('woff2')}
@font-face{font-family:'Inter';font-weight:100 900;font-style:normal;font-display:swap;src:url(compartido/fuentes/Inter-VF.woff2) format('woff2')}

:root{
  --c-fondo:#F4EFE6; --c-superficie:#FBF8F2; --c-banda:#E9F0FA; --c-arena:#E7DCCB;
  --c-texto:#0B1220; --c-titular:#012255; --c-gris:#5B6472; --c-enlace:#1E5BB8;
  --c-accion:#FFD900; --c-sobre-accion:#012255; --c-oscuro:#012255; --c-sobre-oscuro:#F4EFE6;
  --c-enlace-oscuro:#BFD0EA; --c-salvia:#3F5E4C; --c-salvia-lavada:#DCE6DF;
  --c-filete:rgba(1,34,85,.16);
  --f-titular:'Fraunces',Georgia,'Times New Roman',serif;
  --f-cuerpo:'Inter',system-ui,'Segoe UI',Arial,sans-serif;
  --f-variacion:"SOFT" 50,"WONK" 0;
  --f-h1:clamp(2.25rem,1.4rem + 3.6vw,4.25rem);
  --f-h2:clamp(1.75rem,1.3rem + 2vw,2.75rem);
  --medida:68ch; --ancho:1120px; --gutter:max(16px,4vw);
  --r-tarjeta:14px; --r-boton:8px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--c-fondo);color:var(--c-texto);font:400 1.0625rem/1.6 var(--f-cuerpo);overflow-x:hidden}
h1,h2,h3{font-family:var(--f-titular);font-variation-settings:var(--f-variacion);font-weight:600;color:var(--c-titular);margin:0 0 1rem;text-wrap:balance}
h1{font-size:var(--f-h1);line-height:1.05}
h2{font-size:var(--f-h2);line-height:1.12}
h3{font-size:1.375rem;line-height:1.25}
p{max-width:var(--medida);margin:0 0 1rem}
a{color:var(--c-enlace);text-underline-offset:.2em}
img{max-width:100%;height:auto}
:focus-visible{outline:3px solid var(--c-enlace);outline-offset:3px}
.lead{font-size:1.25rem;line-height:1.5}
.nota{font-size:.875rem;color:var(--c-gris)}
.etiqueta{font:600 .875rem/1.3 var(--f-cuerpo);color:var(--c-titular);margin-bottom:.75rem}
.contenedor{max-width:var(--ancho);margin-inline:auto;padding-inline:var(--gutter)}
.seccion{padding-block:clamp(3rem,6vw,5rem)}
.salto{position:absolute;left:-999px;top:0;background:var(--c-titular);color:#fff;padding:.75rem 1rem;z-index:30}
.salto:focus{left:0}

/* cabecera */

/* botones: amarillo solo la acción principal */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:.75rem 1.6rem;border-radius:var(--r-boton);font:700 1.0625rem/1.2 var(--f-cuerpo);text-decoration:none;border:2px solid transparent;text-align:center}
.btn-accion{background:var(--c-accion);color:var(--c-sobre-accion);transition:transform .16s var(--ease),box-shadow .16s var(--ease)}
.btn-accion:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgb(1 34 85 / .22)}
.btn-accion:active{transform:none;box-shadow:none}
.btn-accion:focus-visible{outline-color:var(--c-titular)}
.btn-accion.pulso{animation:pulso .6s var(--ease) .8s 1 both}
@keyframes pulso{50%{transform:scale(1.05)}}
.btn-borde{background:transparent;color:var(--c-enlace);border-color:var(--c-enlace)}
.btn-borde:hover{background:var(--c-banda)}

/* héroe: grano solo aquí */
.heroe{padding-block:clamp(2.5rem,6vw,5.5rem);background:var(--c-fondo);position:relative;isolation:isolate;border-bottom:1px solid var(--c-filete)}
.heroe::before{content:'';position:absolute;inset:0;z-index:-1;background:url(assets/grano.png) center/300px;opacity:.07;pointer-events:none}
.heroe-rejilla{display:grid;grid-template-columns:1.35fr .8fr;gap:clamp(2rem,4vw,4rem);align-items:center}
.heroe .lead{max-width:34rem}
.heroe .btn{margin-top:.5rem}
.subraya{background:linear-gradient(var(--c-enlace),var(--c-enlace)) 0 96%/100% .09em no-repeat;padding-bottom:.04em}
.js .subraya{background-size:0 .09em;transition:background-size .7s var(--ease) .5s}
.js .subraya.visto{background-size:100% .09em}

/* ejemplo de pregunta razonada */
.muestra{margin:0;background:var(--c-superficie);border:1px solid var(--c-filete);border-top:4px solid var(--c-titular);border-radius:var(--r-tarjeta);padding:1.5rem;box-shadow:0 1px 0 rgba(1,34,85,.06)}
.muestra-cab{font:600 .875rem/1.3 var(--f-cuerpo);color:var(--c-gris);margin-bottom:.75rem}
.muestra-enunciado{font:600 1.25rem/1.35 var(--f-titular);font-variation-settings:var(--f-variacion);color:var(--c-titular)}
.opciones{list-style:none;margin:0 0 1rem;padding:0;display:grid;gap:.5rem}
.opciones li{display:flex;gap:.75rem;align-items:center;padding:.65rem .9rem;border:1px solid var(--c-filete);border-radius:10px;background:#fff}
.opciones b{display:inline-grid;place-items:center;width:1.75rem;height:1.75rem;border-radius:50%;background:var(--c-banda);color:var(--c-titular);font-size:.875rem}
.opciones .correcta{background:var(--c-salvia-lavada);color:var(--c-salvia);border-color:var(--c-salvia);font-weight:600}
.opciones .correcta b{background:var(--c-salvia);color:#fff}
.js .heroe .correcta{animation:resalta .5s var(--ease) 1.2s both}
@keyframes resalta{from{background:#fff;color:var(--c-texto);border-color:var(--c-filete)}to{background:var(--c-salvia-lavada)}}
.muestra-razon{font-size:.9375rem;margin:0;padding-top:.75rem;border-top:1px solid var(--c-filete)}

/* formulario de clases */
.formulario label{display:block;font-weight:600;color:var(--c-titular);margin-bottom:.35rem}
.formulario input[type=tel],.formulario input[type=email]{width:100%;min-height:48px;padding:.6rem .8rem;margin-bottom:1rem;font:inherit;background:#fff;color:var(--c-texto);border:2px solid var(--c-gris);border-radius:var(--r-boton);transition:border-color .16s,box-shadow .16s}
.formulario input:focus-visible{border-color:var(--c-enlace);box-shadow:0 0 0 3px var(--c-banda);outline:none}
.formulario input:user-invalid{border-color:#B3261E}
.formulario .casilla{display:flex;gap:.75rem;align-items:flex-start;font-weight:400;color:var(--c-texto);font-size:.9375rem}
.formulario .casilla input{width:24px;height:24px;margin:.1rem 0 0;flex:none}
.formulario .btn{margin-top:.5rem;width:100%}
/* secciones */
.dos-col{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:start}
.banda-azul{background:var(--c-banda)}
.banda-arena{background:var(--c-arena)}
.banda-oscura{background:var(--c-oscuro);color:var(--c-sobre-oscuro)}
.banda-oscura h2{color:var(--c-sobre-oscuro)}
.tarjeta{background:var(--c-superficie);border:1px solid var(--c-filete);border-radius:var(--r-tarjeta);padding:clamp(1.25rem,3vw,2rem);box-shadow:0 1px 0 rgba(1,34,85,.06)}
.tarjeta-convocatoria{border-top:4px solid var(--c-titular);max-width:46rem}
.tarjeta-temario{max-width:46rem;border-left:4px solid var(--c-enlace)}
.tarjeta h2,.tarjeta h3{margin-bottom:.75rem}
.pasos{margin:0 0 1.5rem;padding-left:1.4rem}
.pasos li{padding:.25rem 0 .25rem .25rem;font-size:1.125rem}
.pasos li::marker{font-weight:700;color:var(--c-titular)}
.tres{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1.5rem,4vw,3rem);margin-top:1.5rem}
.tres h3{border-top:3px solid var(--c-titular);padding-top:1rem}
.lista{margin:0 0 1.25rem;padding-left:1.2rem}
.lista li{margin-bottom:.4rem}
.lista-limpia{list-style:none;padding:0}
.lista-limpia li{border-top:1px solid rgba(244,239,230,.35);padding-top:1rem}
.lista-limpia strong{display:block;font:600 1.25rem/1.3 var(--f-titular);margin-bottom:.35rem}
.banda-oscura a{color:var(--c-enlace-oscuro)}
.cierre{text-align:center;background:var(--c-superficie);border-top:1px solid var(--c-filete)}
.cierre h2,.cierre p{margin-inline:auto}

/* preguntas frecuentes */
.faq{max-width:50rem}
details{border-bottom:1px solid var(--c-filete)}
summary{cursor:pointer;list-style:none;padding:1.1rem 2.5rem 1.1rem 0;font-weight:600;color:var(--c-titular);position:relative;min-height:48px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:.25rem;top:.85rem;font-size:1.5rem;line-height:1;transition:transform .2s var(--ease)}
details[open] summary::after{transform:rotate(45deg)}
details p{padding-bottom:.5rem}

/* pie */

/* botón fijo móvil */
.fija{display:none}

/* entrada con scroll: mejora progresiva; sin JS todo es visible */
.js .aparece{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease);transition-delay:calc(var(--i,0)*60ms)}
.js .aparece.visto{opacity:1;transform:none}

@media (max-width:860px){
  .heroe-rejilla,.dos-col,.pie-rejilla{grid-template-columns:1fr}
  .tres{grid-template-columns:1fr}
  .fija{display:inline-flex;position:fixed;z-index:15;left:16px;right:16px;bottom:max(12px,env(safe-area-inset-bottom));box-shadow:0 6px 18px rgb(1 34 85 / .25)}
  .js .fija{transform:translateY(160%);transition:transform .3s var(--ease)}
  .js .fija.on{transform:none}
  .js .fija.on:hover{transform:translateY(-2px)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .aparece,.js .subraya{opacity:1!important;transform:none!important;transition:none!important}
  .js .subraya{background-size:100% .09em!important}
  .btn-accion,.btn-accion.pulso,.js .heroe .correcta,.js .fija{animation:none!important;transition:none!important}
  .btn-accion:hover{transform:none;box-shadow:none}
}

/* ===== Web v1 · Diseño VB (17-10-2026): microinteracciones y pie. Solo opacity/transform, 150-400 ms. ===== */
/* cabecera compacta al bajar: sin cambiar la altura (no mueve el contenido) */
/* botones: elevación de 2 px y filete */
.btn-accion:hover{transform:translateY(-2px);box-shadow:0 2px 0 rgb(1 34 85 / .4)}
.btn-borde{transition:transform .16s var(--ease),background-color .16s var(--ease)}
.btn-borde:hover{transform:translateY(-2px)}
.btn-claro{background:transparent;color:var(--c-sobre-oscuro);border-color:var(--c-enlace-oscuro);min-height:44px;padding:.5rem 1.2rem;font-size:1rem;transition:transform .16s var(--ease),background-color .16s var(--ease)}
.btn-claro:hover{transform:translateY(-2px);background:rgb(244 239 230 / .1)}
/* reveal de 12 px */
.js .aparece{transform:translateY(12px)}
.js .aparece.visto{transform:none}
/* subrayado de «el porqué» que se dibuja */
.subraya,.js .subraya,.js .subraya.visto{background:none;position:relative;display:inline-block;white-space:nowrap}
.subraya::after{content:'';position:absolute;left:0;right:0;bottom:.02em;height:.09em;background:var(--c-enlace);transform-origin:left center}
.js .subraya::after{transform:scaleX(0);transition:transform .6s var(--ease) .35s}
.js .subraya.visto::after{transform:none}
/* FAQ con apertura suave (navegadores con ::details-content; el resto abre sin animar) */
@supports selector(::details-content){
  details{interpolate-size:allow-keywords}
  details::details-content{block-size:0;overflow:clip;opacity:0;transition:block-size .3s var(--ease),opacity .25s var(--ease),content-visibility .3s allow-discrete}
  details[open]::details-content{block-size:auto;opacity:1}
}
/* pie en rejilla completa, sin vacíos */
.redes{list-style:none;margin:0;padding:0;display:flex;gap:1.25rem;flex-wrap:wrap}
.redes a{display:inline-flex;align-items:center;gap:.5rem;min-height:44px;color:var(--c-sobre-oscuro);text-decoration:none;font-weight:500}
.redes a:hover span{text-decoration:underline;text-underline-offset:.25em}
@media (max-width:860px){
}
@media (max-width:420px){.pie .pie-nav,.pie nav:not(.pie-nav){grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){
  .js .subraya::after{transform:none!important}
  .btn-borde:hover,.btn-claro:hover{transform:none}
  details::details-content{transition:none!important}
}
/* ===== fin Web v1 · Diseño VB ===== */

/* ===== Transición entre páginas (View Transitions, solo CSS; sin soporte o con reducir movimiento, navegación normal) ===== */
@media (prefers-reduced-motion:no-preference){
  @view-transition{navigation:auto}
  ::view-transition-old(root){animation:240ms var(--ease) both vt-fuera}
  ::view-transition-new(root){animation:320ms var(--ease) both vt-dentro}
  @keyframes vt-fuera{to{opacity:0}}
  @keyframes vt-dentro{from{opacity:0;transform:translateY(12px)}}
}

/* ===== Portada v3 (18-10-2026): tokens compartidos que cualquier página puede heredar ===== */
:root{--c-salvia-clara:#9CC1A9;--c-texto-sobre-oscuro:#DCE6F5;--sombra-elev:0 24px 48px -24px rgb(1 34 85 / .45)}