/* ============================================================================
   Aula — la experiencia de quien aprende (DOCS/06 §4.1). Barra flotante con
   navegación en píldoras, portada con el árbol del conocimiento (Three.js),
   cifras y bloques tipo «bento». En el móvil, pestañas inferiores.
   Distinta a propósito de la Consola de gestión (gestion.css).
   ============================================================================ */

.aula-cuerpo{background:var(--aula-bg);min-height:100vh;min-height:100dvh}
.aula-fondo{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(42% 36% at 8% 0%,var(--aula-mancha-1),transparent 70%),
    radial-gradient(38% 34% at 96% 6%,var(--aula-mancha-2),transparent 72%),
    radial-gradient(40% 40% at 70% 100%,var(--aula-mancha-3),transparent 70%)}

/* --- Barra superior flotante ------------------------------------------------------ */
.aula-barra{position:sticky;top:12px;z-index:40;display:flex;align-items:center;gap:14px;width:min(1200px,calc(100% - 24px));height:66px;margin:12px auto 0;padding:0 12px 0 16px;border-radius:22px;background:var(--ui-vidrio);border:1px solid var(--ui-vidrio-borde);box-shadow:var(--aula-sombra)}
[data-calidad="alto"] .aula-barra,[data-calidad="medio"] .aula-barra{-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2)}
.aula-barra__marca{flex:none}
.aula-barra__marca:hover{color:inherit}
.aula-nav{display:flex;gap:4px;margin:0 auto;padding:4px;border-radius:var(--r-pill);background:var(--ui-panel-2)}
.aula-nav__item{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--ui-muted);transition:background var(--t-rapida) var(--ease),color var(--t-rapida) var(--ease)}
.aula-nav__item:hover{color:var(--ui-text)}
.aula-nav__item[aria-current="page"]{background:var(--ui-panel);color:var(--ui-text);box-shadow:var(--aula-sombra)}
.aula-nav__item[aria-current="page"] .ico{color:var(--ui-accent)}
.aula-nav__item--activo{background:var(--ui-panel);color:var(--ui-text);box-shadow:var(--aula-sombra)}
.aula-nav__item--activo .ico{color:var(--ui-accent)}
.aula-nav__mas{position:relative}
.aula-nav__mas>summary{list-style:none;cursor:pointer}
.aula-nav__mas>summary::-webkit-details-marker{display:none}
.aula-nav__panel{position:absolute;left:0;top:calc(100% + 10px);z-index:80;min-width:200px;padding:8px;border-radius:18px;background:var(--ui-panel);border:1px solid var(--ui-border);box-shadow:var(--ui-shadow);display:grid;gap:2px}
.aula-nav__panel a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:11px;font-size:14px;font-weight:500;color:var(--ui-text)}
.aula-nav__panel a .ico{color:var(--ui-muted)}
.aula-nav__panel a:hover,.aula-nav__panel a[aria-current="page"]{background:var(--ui-panel-2)}
.aula-nav__panel a[aria-current="page"] .ico,.aula-nav__panel a:hover .ico{color:var(--ui-accent)}
.aula-barra__acciones{display:flex;align-items:center;gap:6px;flex:none}
.pildora-gestion{display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 14px;border-radius:var(--r-pill);background:var(--aula-azul-suave);color:var(--ui-progress);font-size:13.5px;font-weight:700}
.pildora-gestion:hover{color:var(--ui-progress);box-shadow:inset 0 0 0 1px var(--ui-progress)}

.aula-contenido{width:min(1200px,calc(100% - 32px));margin:0 auto;padding:22px 0 64px}
.aula-contenido:focus{outline:none}

/* Aviso permanente de sesión: «Iniciar sesión como» y «Cambiar rol a…» (DOCS/08 F2.12) */
.aviso-sesion{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px;padding:12px 14px 12px 12px;border-radius:20px;background:linear-gradient(120deg,var(--aula-destacado-1),var(--aula-destacado-2));color:var(--aula-destacado-texto);box-shadow:var(--aula-sombra)}
.aviso-sesion p{flex:1;min-width:220px;font-size:14px}
.aviso-sesion__icono{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:rgba(255,255,255,.14);color:var(--marca-verde);flex:none}
.aviso-sesion--suplantando{background:linear-gradient(120deg,var(--aviso-suplantacion-1),var(--aviso-suplantacion-2))}

/* --- Portada: saludo + árbol del conocimiento -------------------------------------- */
.aula-hero{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;gap:12px;min-height:360px;padding:40px 44px;border-radius:32px;overflow:hidden;background:linear-gradient(130deg,var(--aula-hero-1),var(--aula-hero-2));border:1px solid var(--aula-hero-borde);box-shadow:var(--aula-sombra)}
.aula-hero::after{content:"";position:absolute;right:-8%;bottom:-40%;width:60%;aspect-ratio:1;border-radius:50%;background:radial-gradient(closest-side,var(--aula-mancha-1),transparent);pointer-events:none}
.aula-hero__texto{position:relative;z-index:1}
.aula-hero__fecha{display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 10px;border-radius:var(--r-pill);background:var(--ui-vidrio);border:1px solid var(--ui-vidrio-borde);font-size:13px;font-weight:600}
.aula-hero__fecha .ico{color:var(--aula-sol)}
[data-theme-ui="dark"] .aula-hero__fecha .ico{color:var(--ui-accent)}
.aula-hero__fecha time{font-variant-numeric:tabular-nums}
.aula-hero h1{font-size:clamp(36px,4.6vw,56px);line-height:1;margin:18px 0 12px;letter-spacing:-.01em}
.aula-hero h1 span{color:var(--ui-accent)}
.aula-hero__frase{max-width:46ch;font-size:16.5px;color:var(--ui-muted);font-weight:500}
.aula-hero__acciones{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.aula-hero__arbol{position:relative;align-self:stretch;min-height:300px;margin:-40px -44px -40px 0}
.escena--arbol{position:absolute;inset:0}
.escena--arbol .escena__respaldo{width:min(70%,240px);height:min(70%,240px)}
.arbol-estado{position:absolute;left:12px;bottom:28px;z-index:1;display:flex;align-items:center;gap:10px;padding:6px 16px 6px 6px;border-radius:var(--r-pill);background:var(--ui-vidrio);border:1px solid var(--ui-vidrio-borde);box-shadow:var(--aula-sombra);font-size:13px}
.arbol-estado strong{font-family:var(--font-display);font-size:17px;color:var(--ui-accent)}
.arbol-estado__anillo{width:38px;height:38px;transform:rotate(-90deg)}
.anillo-pista,.anillo-valor{fill:none;stroke-width:5}
.anillo-pista{stroke:var(--ui-panel-2)}
.anillo-valor{stroke:var(--ui-accent);stroke-linecap:round}

/* --- Cifras ----------------------------------------------------------------------------- */
.aula-cifras{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:16px 0;list-style:none}
.cifra{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:14px;align-items:center;padding:16px 18px;border-radius:22px;background:var(--ui-panel);border:1px solid var(--ui-border);box-shadow:var(--aula-sombra)}
.cifra__icono{grid-row:1/3;display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:var(--ui-accent-glow);color:var(--ui-accent)}
.cifra__icono .ico{width:22px;height:22px}
.cifra:nth-child(2) .cifra__icono{background:var(--aula-azul-suave);color:var(--ui-progress)}
.cifra:nth-child(3) .cifra__icono{background:color-mix(in srgb,var(--aula-sol) 18%,transparent);color:var(--ui-warn)}
.cifra:nth-child(4) .cifra__icono{background:color-mix(in srgb,var(--marca-verde-logo) 20%,transparent);color:var(--ui-accent-soft)}
.cifra__valor{font-family:var(--font-display);font-size:30px;font-weight:700;line-height:1}
.cifra__etiqueta{font-size:13px;color:var(--ui-muted);font-weight:600}

/* --- Bloques (bento) -------------------------------------------------------------------- */
.aula-bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:16px}
.bloque{grid-column:span 6;min-width:0;padding:22px 24px 24px;border-radius:26px;background:var(--ui-panel);border:1px solid var(--ui-border);box-shadow:var(--aula-sombra);scroll-margin-top:96px}
/* Pasos ocupa dos filas a la izquierda; semana y logros se apilan a su derecha;
   luego cursos + cuenta, y el consejo cierra como franja ancha. */
.bloque--pasos{grid-column:span 7;grid-row:span 2}
.bloque--semana,.bloque--logros,.bloque--cuenta{grid-column:span 5}
.bloque--cursos{grid-column:span 7}
.bloque--consejo{grid-column:1/-1;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px 28px;padding:26px 32px}
.bloque--consejo .bloque__cabecera{margin:0;flex-direction:row-reverse;justify-content:flex-end}
.bloque__cabecera{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.bloque__cabecera h2{font-size:22px}
.bloque__cabecera>.ico{width:22px;height:22px;color:var(--ui-accent)}
.bloque__dato{padding:4px 12px;border-radius:var(--r-pill);background:var(--ui-accent-glow);color:var(--ui-accent);font-size:13px;font-weight:700}
.bloque__vacio{display:flex;align-items:center;gap:10px;margin-top:18px;padding:12px 14px;border-radius:14px;background:var(--ui-panel-2);font-size:14px;color:var(--ui-muted)}
.bloque__vacio .ico{color:var(--ui-accent)}
.bloque__nota{margin-top:14px;font-size:13.5px;color:var(--ui-muted)}

/* Primeros pasos */
.pasos-lista{display:grid;gap:10px;margin-top:18px;list-style:none}
.paso{display:grid;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;gap:14px;padding:12px 12px 12px 12px;border-radius:18px;border:1px solid var(--ui-border);background:var(--ui-panel-2)}
.paso__icono{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:var(--ui-panel);color:var(--ui-accent);border:1px solid var(--ui-border)}
.paso__texto strong{display:block;font-size:15px}
.paso__texto span{display:block;font-size:13.5px;color:var(--ui-muted)}
.paso--hecho{background:transparent}
.paso--hecho .paso__icono{background:var(--ui-accent);color:var(--ui-accent-ink);border-color:transparent}
.paso--hecho .paso__texto strong{color:var(--ui-muted)}
.bloque--pasos{display:flex;flex-direction:column}
.pasos-meta{display:flex;align-items:center;gap:14px;margin-top:auto;padding:14px 16px;border-radius:18px;background:linear-gradient(120deg,var(--ui-accent-glow),var(--aula-azul-suave));font-size:14px;color:var(--ui-muted)}
.bloque--pasos .pasos-lista{margin-bottom:18px}
.pasos-meta strong{color:var(--ui-text)}
.pasos-meta__icono{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:var(--ui-panel);color:var(--ui-accent);flex:none}

/* Semana */
.semana{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;list-style:none}
.dia{display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 0 10px;border-radius:16px;background:var(--ui-panel-2)}
.dia__nombre{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ui-muted)}
.dia__numero{font-family:var(--font-display);font-size:22px;font-weight:700;line-height:1.1}
.dia--pasado .dia__numero{color:var(--ui-muted)}
.dia--hoy{background:linear-gradient(160deg,var(--boton-marca-1),var(--boton-marca-2));color:var(--boton-marca-ink);box-shadow:var(--boton-marca-sombra)}
.dia--hoy .dia__nombre{color:inherit}

/* Mis cursos (vacío ilustrado) */
.vacio-ilustrado{display:grid;grid-template-columns:170px minmax(0,1fr);align-items:center;gap:24px;padding:18px;border-radius:20px;border:1px dashed var(--ui-border)}
.vacio-ilustrado h3{font-size:21px;margin-bottom:4px}
.vacio-ilustrado p{color:var(--ui-muted);font-size:14.5px;max-width:48ch}
.vacio-ilustrado__arte{width:170px;height:auto}
.arte-libro{stroke:none}
.arte-libro--a{fill:var(--ui-accent)}
.arte-libro--b{fill:var(--ui-progress)}
.arte-libro--c{fill:var(--marca-verde-logo)}
.arte-trazo{fill:none;stroke:var(--ui-border);stroke-width:3;stroke-linecap:round}
.arte-sol{fill:var(--aula-sol)}

/* Consejo destacado */
.bloque--consejo{background:linear-gradient(150deg,var(--aula-destacado-1),var(--aula-destacado-2));border-color:transparent;color:var(--aula-destacado-texto)}
.bloque--consejo .bloque__cabecera>.ico{color:var(--marca-verde)}
.consejo-grande{font-family:var(--font-display);font-size:23px;font-weight:600;line-height:1.25;text-wrap:pretty}
.consejo-grande{position:relative;padding-left:44px;font-size:24px}
.consejo-grande::before{content:"“";position:absolute;left:0;top:-4px;font-size:64px;line-height:1;color:var(--marca-verde)}

/* Logros */
.medallas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;list-style:none}
.medalla{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;font-size:13px;font-weight:600;color:var(--ui-muted)}
.medalla .ico{width:64px;height:64px;padding:18px;border-radius:50%;border:2px dashed var(--ui-border);background:var(--ui-panel-2);color:var(--ui-muted)}

/* Cuenta */
.datos-cuenta{list-style:none}
.datos-cuenta li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--ui-border);font-size:14px}
.datos-cuenta li:last-child{border-bottom:0}
.datos-cuenta li>span:first-child{color:var(--ui-muted)}
a.chip{text-decoration:none}

/* Páginas de cuenta dentro del aula */
.aula-contenido .grupo{border-radius:22px;box-shadow:var(--aula-sombra)}
.aula-contenido .tarjeta{border-radius:22px}

/* --- Pestañas inferiores (móvil) --------------------------------------------------------- */
.aula-pestanas{display:none}

@media (max-width:1060px){
  .aula-nav__item{padding:8px 12px}
  .aula-nav__item span{display:none}
  .pildora-gestion span{display:none}
  .pildora-gestion{width:40px;padding:0;justify-content:center}
}
@media (max-width:480px){
  /* Con la campana no cabe todo: Consola y Mi aula siguen en el menú de la cuenta. */
  .pildora-gestion{display:none}
}
@media (max-width:900px){
  .aula-barra{top:8px;height:58px;width:calc(100% - 16px);margin-top:8px;border-radius:18px}
  .aula-barra .marca__sub{display:none}
  .aula-nav{display:none}
  .aula-barra__acciones{margin-left:auto}
  .aula-contenido{width:calc(100% - 24px);padding:14px 0 112px}
  .aula-hero{grid-template-columns:minmax(0,1fr);padding:26px 22px 0;border-radius:26px;min-height:0}
  .aula-hero h1{font-size:clamp(32px,9vw,42px);margin-top:14px}
  .aula-hero__arbol{min-height:260px;margin:4px -22px 0}
  .arbol-estado{left:16px;bottom:16px}
  .aula-cifras{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .cifra{padding:14px;border-radius:18px;column-gap:10px}
  .cifra__icono{width:40px;height:40px;border-radius:13px}
  .cifra__valor{font-size:26px}
  .bloque,.bloque--pasos,.bloque--semana,.bloque--logros,.bloque--cuenta,.bloque--cursos,.bloque--consejo{grid-column:1/-1;grid-row:auto;padding:20px 18px;border-radius:22px}
  .bloque--consejo{grid-template-columns:minmax(0,1fr)}
  .consejo-grande{font-size:21px;padding-left:36px}
  .vacio-ilustrado{grid-template-columns:minmax(0,1fr);text-align:center;justify-items:center}
  .paso{grid-template-columns:38px minmax(0,1fr);gap:12px}
  .paso>.chip,.paso>.boton{grid-column:2;justify-self:start}
  .paso__icono{width:38px;height:38px}
  .aula-pestanas{position:fixed;left:8px;right:8px;bottom:calc(8px + env(safe-area-inset-bottom));z-index:50;display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);padding:6px;border-radius:22px;background:var(--ui-vidrio);border:1px solid var(--ui-vidrio-borde);box-shadow:var(--ui-shadow)}
  [data-calidad="alto"] .aula-pestanas,[data-calidad="medio"] .aula-pestanas{-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2)}
  .aula-pestanas a{display:flex;flex-direction:column;align-items:center;gap:3px;padding:7px 0 6px;border-radius:16px;font-size:11px;font-weight:700;color:var(--ui-muted)}
  .aula-pestanas a .ico{width:22px;height:22px}
  .aula-pestanas a[aria-current="page"]{background:var(--ui-accent-glow);color:var(--ui-accent)}
  .aula-cuerpo .toasts{bottom:calc(92px + env(safe-area-inset-bottom))}
}
@media (max-width:420px){
  .semana{gap:4px}
  .dia{padding:10px 0 8px;border-radius:12px}
  .dia__numero{font-size:19px}
}