:root{
  --fondo:#f4f6fb; --tarjeta:#fff; --texto:#1c2333; --suave:#667085; --borde:#e3e7ef;
  --pri:#4f46e5; --pri-2:#6366f1; --pri-claro:#eef0ff;
  --sec:#d97706; --sec-claro:#fff6e6;
  --ok:#16a34a; --ok-claro:#e8f8ee; --mal:#dc2626; --mal-claro:#fdecec; --info-claro:#eaf3ff;
  --radio:14px; --sombra:0 1px 2px rgba(16,24,40,.05),0 4px 14px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
body{margin:0;font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif;background:var(--fondo);color:var(--texto)}
a{color:var(--pri)}
h1{font-size:1.6rem;margin:.2em 0 .6em}h2{font-size:1.2rem;margin:.2em 0 .7em}h3{font-size:1.05rem;margin:0}
.muted{color:var(--suave)} .centro{text-align:center} .oculto{display:none!important} .c{text-align:center}
.mono{font-family:ui-monospace,Consolas,monospace;font-size:13px}

/* ---------- Barra superior ---------- */
.topbar{background:#151a2d;color:#fff;display:flex;align-items:center;gap:16px;padding:10px 22px;position:sticky;top:0;z-index:20}
.marca{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:700;font-size:1.1rem}
.marca small{display:block;font-weight:400;font-size:.72rem;opacity:.7}
.logo,.auth-logo{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--pri),#22c1c3);color:#fff;font-weight:900}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{color:#c9cfe4;text-decoration:none;padding:7px 12px;border-radius:9px;font-size:.92rem}
.nav a:hover{background:#ffffff14;color:#fff}.nav a.activo{background:var(--pri);color:#fff}
.usuario-chip{font-size:.85rem;opacity:.8;padding:0 8px}.nav a.salir{color:#ffb4b4}
.menu-btn{display:none;margin-left:auto;background:none;border:0;color:#fff;font-size:1.5rem;cursor:pointer}
.contenedor{max-width:1180px;margin:0 auto;padding:26px 20px 60px}
.pie{text-align:center;color:var(--suave);font-size:.8rem;padding:20px}

/* ---------- Componentes ---------- */
.tarjeta{background:var(--tarjeta);border:1px solid var(--borde);border-radius:var(--radio);padding:20px;box-shadow:var(--sombra);margin-bottom:18px}
details.tarjeta summary{cursor:pointer;list-style:none}details.tarjeta[open] summary{margin-bottom:14px}
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--borde);background:#fff;color:var(--texto);padding:9px 15px;border-radius:10px;
  font:inherit;font-weight:600;cursor:pointer;text-decoration:none;transition:.15s;white-space:nowrap}
.btn:hover{border-color:#c5cbe0;transform:translateY(-1px)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-primario{background:var(--pri);border-color:var(--pri);color:#fff}.btn-primario:hover{background:var(--pri-2)}
.btn-exito{background:var(--ok);border-color:var(--ok);color:#fff}
.btn-alerta{background:var(--sec);border-color:var(--sec);color:#fff}
.btn-peligro{color:var(--mal);border-color:#f3c4c4}.btn-peligro:hover{background:var(--mal-claro)}
.btn-sm{padding:5px 10px;font-size:.85rem;border-radius:8px}.btn-bloque{width:100%;justify-content:center}
.btn-grande{padding:14px 26px;font-size:1.05rem}
.primaria-bg{background:var(--pri-claro);border-color:#c9cdfb}.secundaria-bg{background:var(--sec-claro);border-color:#f5d39b}
form.inline{display:inline}
label{display:block;font-weight:600;font-size:.88rem;margin-bottom:12px}
input,select,textarea{display:block;width:100%;margin-top:5px;padding:10px 12px;border:1px solid #d3d8e4;border-radius:10px;font:inherit;background:#fff;color:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid #c7cbff;border-color:var(--pri)}
label.check{display:flex;align-items:center;gap:8px;font-weight:500}label.check input{width:auto;margin:0}
.fila2,.fila3{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}.fila3{grid-template-columns:repeat(3,1fr)}
.grid2{display:grid;gap:18px;grid-template-columns:1fr 1fr;align-items:start}
.alerta{padding:12px 15px;border-radius:10px;margin-bottom:14px;border:1px solid transparent}
.alerta.ok{background:var(--ok-claro);border-color:#b7e6c8;color:#0f5a2a}.alerta.error{background:var(--mal-claro);border-color:#f5c2c2;color:#8a1c1c}
.alerta.info{background:var(--info-claro);border-color:#c5dcfb;color:#1d4a85}
.tag{display:inline-block;padding:2px 9px;border-radius:999px;font-size:.75rem;font-weight:700;background:#eef1f6;color:#475069;vertical-align:middle}
.tag-primaria{background:var(--pri-claro);color:var(--pri)}.tag-secundaria{background:var(--sec-claro);color:var(--sec)}.tag-gris{background:#eceef2;color:#6b7280}
.encabezado{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.encabezado>div{display:flex;gap:8px;flex-wrap:wrap}
.miga{font-size:.85rem;color:var(--suave);margin:0 0 4px}
.vacio{padding:34px;text-align:center;color:var(--suave);background:#fff;border:2px dashed var(--borde);border-radius:var(--radio);margin-bottom:18px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--borde);border-radius:var(--radio);padding:16px 18px;box-shadow:var(--sombra)}
.stat b{display:block;font-size:1.7rem;line-height:1.2}.stat span{color:var(--suave);font-size:.85rem}
.tabla-wrap{overflow-x:auto;background:#fff;border:1px solid var(--borde);border-radius:var(--radio);box-shadow:var(--sombra);margin-bottom:16px}
.tabla{width:100%;border-collapse:collapse}
.tabla th{text-align:left;font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;color:var(--suave);padding:11px 12px;border-bottom:1px solid var(--borde);background:#fafbfd}
.tabla td{padding:10px 12px;border-bottom:1px solid #f0f2f6;vertical-align:middle}.tabla tr:last-child td{border-bottom:0}
.tabla th.c,.tabla td.c{text-align:center}
.tarjeta .tabla th{background:none}
.fila-inactiva td{opacity:.55}.acciones-fila{white-space:nowrap}
.nota-ok{color:var(--ok)}.nota-mal{color:var(--mal)}.nota-na{color:#a0a7b6}.nota-grande{font-size:1.15rem}
.lista-simple{padding-left:18px}
.filtros{display:flex;gap:14px;align-items:flex-end;flex-wrap:wrap;padding:14px 18px}.filtros label{margin:0;min-width:200px}
.acciones-masivas{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:14px 18px}

/* ---------- Módulos ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:18px}
.modulo-cab{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.modulo-cab h3{flex:1}
.modulo.inactivo{opacity:.65}
.eval-par{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.eval-link{display:block;padding:12px 14px;border-radius:12px;text-decoration:none;border:1px solid}
.eval-link span{display:block;font-size:.82rem;color:var(--suave)}
.eval-link.primaria{background:var(--pri-claro);border-color:#d3d6fd;color:var(--pri)}
.eval-link.secundaria{background:var(--sec-claro);border-color:#f8dcaa;color:var(--sec)}
.eval-link:hover{filter:brightness(.97)}
.acciones{display:flex;gap:6px;flex-wrap:wrap}
.modulo-est .def{text-align:center;border-radius:12px;padding:4px 12px;background:#f5f6fa}
.modulo-est .def small{display:block;font-size:.68rem;color:var(--suave);text-transform:uppercase}.modulo-est .def b{font-size:1.4rem}
.eval-fila{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 14px;border-radius:12px;margin-top:10px;border-left:4px solid}
.eval-fila small{display:block}
.eval-fila.primaria{background:#f7f7ff;border-color:var(--pri)}.eval-fila.secundaria{background:#fffaf1;border-color:var(--sec)}
.eval-fila.bloqueada{filter:grayscale(.7);opacity:.8}
.eval-accion{display:flex;gap:8px;align-items:center;flex-shrink:0}
.nota-chip{font-weight:800;font-size:1.05rem;padding:2px 10px;border-radius:9px;background:#fff;border:1px solid var(--borde)}

/* ---------- Editor de preguntas ---------- */
.lista-preguntas{list-style:none;padding:0;margin:0}
.pregunta-item{padding:14px 18px;border-left:4px solid var(--borde)}
.pregunta-item.bien{border-left-color:var(--ok)}.pregunta-item.parcial{border-left-color:var(--sec)}.pregunta-item.mal{border-left-color:var(--mal)}
.pregunta-cab{display:flex;align-items:center;gap:8px}.espacio{flex:1}
.num{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--pri-claro);color:var(--pri);font-weight:800;font-size:.85rem}
.enunciado{font-weight:600;margin:10px 0 6px}.correcta{color:var(--ok);font-size:.9rem;margin:4px 0 0}
.img-preg{max-width:100%;max-height:320px;border-radius:10px;margin:6px 0;border:1px solid var(--borde)}
.op-fila{display:flex;align-items:center;gap:8px;margin-bottom:8px}.op-fila input:not([type=radio]):not([type=checkbox]){margin:0}
.op-fila input[type=radio],.op-fila input[type=checkbox]{width:20px;height:20px;margin:0;flex-shrink:0;accent-color:var(--ok)}
.asa{color:#b3b9c7;cursor:default}.vf-sel{display:flex;gap:24px;margin-bottom:10px}
.ayuda{font-size:.85rem;color:var(--suave)}
.ayuda-formato{background:#0f1426;color:#c9d2f1;padding:14px;border-radius:10px;font-size:12.5px;overflow:auto;margin:0;white-space:pre-wrap}

/* ---------- Interruptores ---------- */
.switch{display:inline-block;position:relative;width:46px;height:26px;margin:0;cursor:pointer}
.switch input{opacity:0;width:0;height:0;position:absolute}
.switch span{position:absolute;inset:0;background:#d6dae3;border-radius:99px;transition:.2s}
.switch span:before{content:"";position:absolute;width:20px;height:20px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px #0003}
.switch input:checked+span{background:var(--pri)}.switch.sec input:checked+span{background:var(--sec)}
.switch input:checked+span:before{transform:translateX(20px)}

/* ---------- Ingreso / registro ---------- */
body.auth{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 20% 10%,#e3e6ff,transparent 45%),radial-gradient(circle at 90% 90%,#d8f5f5,transparent 40%),var(--fondo)}
.auth-card{width:100%;max-width:440px;background:#fff;border-radius:20px;padding:32px;box-shadow:0 20px 50px rgba(30,40,90,.12)}
.auth-card h1{margin-bottom:0}.auth-logo{width:48px;height:48px;font-size:1.4rem;margin-bottom:10px}

/* ---------- Examen ---------- */
body.modo-examen{background:#eef1f8}
.examen-top{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--borde);display:flex;align-items:center;gap:14px;padding:12px 22px 16px;flex-wrap:wrap}
.examen-tit{flex:1;display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:200px}
.reloj{font-variant-numeric:tabular-nums;font-weight:800;font-size:1.15rem;padding:6px 14px;background:var(--pri-claro);color:var(--pri);border-radius:10px}
.reloj.alerta-tiempo{background:var(--mal-claro);color:var(--mal);animation:latido 1s infinite}
@keyframes latido{50%{transform:scale(1.06)}}
.progreso{position:absolute;left:0;right:0;bottom:0;height:4px;background:#eceff5}
#progreso-barra{height:100%;width:0;background:linear-gradient(90deg,var(--pri),#22c1c3);transition:width .4s}
.examen-main{max-width:820px;margin:0 auto;padding:22px 18px 60px}
.examen-estado{display:flex;justify-content:space-between;font-size:.85rem;color:var(--suave);margin-bottom:10px}
.preg-card{background:#fff;border-radius:18px;padding:28px;box-shadow:var(--sombra);border:1px solid var(--borde)}
.preg-card.entra{animation:entra .28s ease}
@keyframes entra{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.preg-meta{display:flex;justify-content:space-between;font-size:.8rem;color:var(--suave);text-transform:uppercase;letter-spacing:.04em;font-weight:700}
.preg-enun{font-size:1.25rem;line-height:1.45;margin:12px 0 18px}
.pista{font-size:.85rem;color:var(--suave);margin:-6px 0 12px}
.opciones{display:grid;gap:10px}.opciones.vf{grid-template-columns:1fr 1fr}
.opcion{display:flex;align-items:center;gap:14px;text-align:left;width:100%;padding:14px 16px;border:2px solid var(--borde);border-radius:14px;background:#fff;font:inherit;font-size:1rem;cursor:pointer;transition:.15s;color:inherit}
.opcion:hover{border-color:#b9bff7;background:#fafaff}
.opcion .letra{display:grid;place-items:center;flex-shrink:0;width:32px;height:32px;border-radius:9px;background:#f0f2f7;font-weight:800;color:#5b6378;transition:.15s}
.opcion.sel{border-color:var(--pri);background:var(--pri-claro);box-shadow:0 0 0 3px #e0e3ff}
.opcion.sel .letra{background:var(--pri);color:#fff}
.opciones.vf .opcion{justify-content:center;padding:22px;font-weight:700}
.resp-corta{font-size:1.15rem;padding:14px 16px;border-width:2px}
.ordenable{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.ordenable li{display:flex;align-items:center;gap:12px;padding:12px 14px;border:2px solid var(--borde);border-radius:12px;background:#fff;cursor:grab;transition:background .2s,border-color .2s}
.ordenable li.arrastrando{opacity:.5;border-style:dashed}.ordenable li.movido{background:var(--pri-claro);border-color:var(--pri)}
.ordenable .pos{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--pri);color:#fff;font-weight:800;font-size:.85rem;flex-shrink:0}
.ordenable .txt{flex:1}.flechas{display:flex;gap:4px}
.flechas button{border:1px solid var(--borde);background:#f7f8fb;border-radius:8px;width:34px;height:30px;cursor:pointer;font-size:.8rem}
.flechas button:hover{background:var(--pri-claro)}
.emparejar{display:grid;gap:10px}
.par{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px}
.par-a{padding:12px 14px;background:#f5f6fb;border-radius:12px;font-weight:600}.par .flecha{color:var(--suave)}
.par select{margin:0;border-width:2px;padding:11px}.par select.listo{border-color:var(--pri);background:var(--pri-claro)}
.examen-nav{display:flex;justify-content:space-between;gap:10px;margin:18px 0}
.nav-preg{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.nav-preg button{width:38px;height:38px;border-radius:10px;border:1px solid var(--borde);background:#fff;font-weight:700;cursor:pointer;color:#5b6378}
.nav-preg button.ok{background:var(--ok-claro);border-color:#a9dfbd;color:var(--ok)}
.nav-preg button.act{outline:3px solid var(--pri);outline-offset:1px}
.modal{position:fixed;inset:0;background:rgba(15,20,40,.55);display:grid;place-items:center;z-index:50;padding:16px}
.modal-cont{background:#fff;border-radius:18px;padding:26px;max-width:620px;width:100%;max-height:88vh;overflow:auto;animation:entra .2s}
.modal-acc{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}
.rev{padding-left:18px}.rev li{margin-bottom:10px;padding:8px 10px;border-radius:8px}
.rev li.bien{background:var(--ok-claro)}.rev li.parcial{background:var(--sec-claro)}.rev li.mal{background:var(--mal-claro)}
.cargando{position:fixed;inset:0;background:rgba(255,255,255,.92);display:grid;place-content:center;justify-items:center;z-index:60;font-weight:600}
.spinner{width:46px;height:46px;border:5px solid var(--pri-claro);border-top-color:var(--pri);border-radius:50%;animation:gira .8s linear infinite}
@keyframes gira{to{transform:rotate(360deg)}}

/* ---------- Inicio de examen / resultado ---------- */
.inicio-examen{max-width:720px;margin:0 auto}
.datos-examen{list-style:none;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:18px 0}
.datos-examen li{background:#f6f7fb;border-radius:12px;padding:12px;text-align:center}
.datos-examen b{display:block;font-size:1.4rem}.datos-examen span{font-size:.8rem;color:var(--suave)}
.reglas{padding-left:18px;color:#3c4458}
.resultado{max-width:720px;margin:0 auto 22px;text-align:center}
.anillo{--p:0;width:190px;height:190px;border-radius:50%;margin:20px auto;display:grid;place-items:center;
  background:conic-gradient(var(--c) calc(var(--p)*1%),#edf0f5 0);animation:aparece .6s ease}
.resultado.aprobado{--c:var(--ok)}.resultado.reprobado{--c:var(--mal)}
.anillo>div{width:150px;height:150px;border-radius:50%;background:#fff;display:grid;place-content:center}
.anillo b{font-size:3.2rem;line-height:1;color:var(--c)}.anillo small{color:var(--suave)}
@keyframes aparece{from{transform:scale(.6);opacity:0}}
.veredicto{font-size:1.25rem;font-weight:800;margin:0}
.resumen-notas{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0}
.resumen-notas div{background:#f6f7fb;border-radius:12px;padding:12px}.resumen-notas small{display:block;color:var(--suave);font-size:.78rem}
.resumen-notas b{font-size:1.5rem}.resumen-notas .destacada{background:#151a2d;color:#fff}.resumen-notas .destacada small{color:#aab}
.datos dt{font-size:.8rem;color:var(--suave)}.datos dd{margin:0 0 10px;font-weight:600}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:#151a2d;flex-direction:column;align-items:stretch;padding:10px}
  body.nav-abierta .nav{display:flex}
  .grid2,.fila3{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
}
@media (max-width:560px){
  .fila2,.eval-par,.datos-examen,.resumen-notas{grid-template-columns:1fr 1fr}
  .preg-card{padding:20px}.preg-enun{font-size:1.1rem}
  .par{grid-template-columns:1fr}.par .flecha{display:none}
  .opciones.vf{grid-template-columns:1fr 1fr}
  .eval-fila{flex-direction:column;align-items:flex-start}
  .examen-top{padding:10px 14px 14px}
}

/* ===================== v1.2 · Programas, materias y experiencia móvil ===================== */
html{-webkit-text-size-adjust:100%}
body{-webkit-tap-highlight-color:transparent}
.topbar{padding-top:max(10px,env(safe-area-inset-top))}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:4px 0 16px;overflow-x:auto}
.chip{border:1px solid var(--borde);background:#fff;color:#3c4458;padding:7px 14px;border-radius:999px;font:inherit;font-size:.88rem;font-weight:600;
  cursor:pointer;text-decoration:none;white-space:nowrap}
.chip.act{background:var(--texto);border-color:var(--texto);color:#fff}
.titulo-materia{margin:22px 0 12px;font-size:1.15rem}.titulo-materia small{display:block;font-size:.75rem;color:var(--suave);font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.seccion{font-size:1.1rem;margin:20px 0 10px}
.paso-siguiente{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.mini-stats{display:flex;gap:16px;margin:10px 0 14px;flex-wrap:wrap}.mini-stats a{text-decoration:none;color:var(--suave);font-size:.9rem}.mini-stats b{color:var(--texto);font-size:1.15rem}
.programa.inactivo{opacity:.6}.programa details summary{list-style:none;display:inline-flex}
.filtros.sin-borde{padding:10px 0 0;border:0;box-shadow:none}
/* Inscripciones */
.lista-check .buscador{margin:0 0 10px}
.lista-check .items{max-height:420px;overflow:auto;border:1px solid var(--borde);border-radius:12px;margin:8px 0 12px}
.lista-check .item{display:flex;gap:10px;align-items:center;padding:10px 12px;margin:0;border-bottom:1px solid #f0f2f6;cursor:pointer}
.lista-check .item:last-child{border-bottom:0}.lista-check .item:hover{background:#fafbff}
.lista-check .item input{width:20px;height:20px;accent-color:var(--pri)}
.lista-check .item span:first-of-type{flex:1}.lista-check .item small{display:block}
.lista-check .todos{margin:0 0 4px;font-size:.88rem}
.mini-tags i{font-style:normal;margin-left:3px}
/* Panel del estudiante */
.hero-est{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;padding:22px;border-radius:20px;margin-bottom:8px;
  background:linear-gradient(135deg,#151a2d,#2b2f6b 60%,#1f6f7a);color:#fff}
.hero-est h1{margin:2px 0}.hero-est .muted{color:#c3c8e6;margin:0}.saludo{margin:0;opacity:.85}
.hero-stats{display:flex;gap:10px}
.hero-stats div{background:#ffffff14;border:1px solid #ffffff22;border-radius:14px;padding:10px 16px;text-align:center;min-width:86px}
.hero-stats b{display:block;font-size:1.5rem}.hero-stats span{font-size:.75rem;opacity:.8}
.hero-stats .nota-ok{color:#7ee2a0}.hero-stats .nota-mal{color:#ff9d9d}.hero-stats .nota-na{color:#c3c8e6}
.pendientes{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.pend{display:block;text-decoration:none;color:var(--texto);background:#fff;border:1px solid var(--borde);border-left:5px solid var(--pri);border-radius:14px;padding:14px 16px;
  box-shadow:var(--sombra);transition:.15s}
.pend:hover{transform:translateY(-2px)}.pend.secundaria{border-left-color:var(--sec)}
.pend small{color:var(--suave);font-weight:600}.pend b{display:block;font-size:1.05rem}.pend span{display:block;font-size:.85rem;color:var(--suave)}
.pend em{display:inline-block;margin-top:8px;font-style:normal;font-weight:700;color:var(--pri)}.pend.secundaria em{color:var(--sec)}
.pend.curso{background:var(--sec-claro)}
/* Barra inferior (estudiantes en celular) */
.tabbar{display:none}
/* Avisos */
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,30px);opacity:0;background:#151a2d;color:#fff;padding:11px 18px;border-radius:12px;
  font-weight:600;z-index:90;transition:.25s;box-shadow:0 10px 30px #0004;max-width:90vw}
.toast.ver{opacity:1;transform:translate(-50%,0)}
/* Examen: arrastre táctil */
.asa-drag{cursor:grab;touch-action:none;user-select:none;font-size:1.3rem;color:#9aa3b8;padding:6px 4px;line-height:1}
.ordenable li{cursor:default}
.ordenable li.arrastrando{opacity:1;border-style:solid;border-color:var(--pri);box-shadow:0 8px 24px rgba(79,70,229,.25);transform:scale(1.02);background:var(--pri-claro);z-index:2;position:relative}
.par select option:disabled{color:#b0b6c4}
.examen-main{padding-bottom:calc(60px + env(safe-area-inset-bottom))}

@media (max-width:860px){
  body.rol-estudiante .menu-btn{display:none}
  body.rol-estudiante .nav{display:none!important}
  body.rol-estudiante .contenedor{padding-bottom:calc(90px + env(safe-area-inset-bottom))}
  body.rol-estudiante .pie{padding-bottom:calc(80px + env(safe-area-inset-bottom))}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
    border-top:1px solid var(--borde);padding:6px 6px calc(6px + env(safe-area-inset-bottom))}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;text-decoration:none;color:var(--suave);font-size:.72rem;font-weight:600;padding:6px 0;border-radius:12px}
  .tabbar a span{font-size:1.3rem;line-height:1}
  .tabbar a.activo{color:var(--pri);background:var(--pri-claro)}
  .toast{bottom:calc(90px + env(safe-area-inset-bottom))}
  .hero-est{padding:18px}.hero-stats{width:100%}.hero-stats div{flex:1;min-width:0}
}
@media (max-width:640px){
  input,select,textarea{font-size:16px}           /* evita el zoom automático en iPhone */
  .contenedor{padding:16px 12px 60px}
  h1{font-size:1.35rem}
  .tarjeta{padding:16px;border-radius:12px}
  .btn{padding:10px 14px}.btn-sm{padding:7px 11px}
  .encabezado>div{width:100%}
  .filtros label{min-width:0;flex:1 1 100%}
  .tabla{font-size:.88rem}.tabla th,.tabla td{padding:9px 8px}
  .acciones-fila{white-space:normal}.acciones-fila .btn{margin:2px 0}
  .stats{grid-template-columns:1fr 1fr}.stat b{font-size:1.35rem}
  .examen-top{gap:8px}.examen-tit{min-width:0;flex:1 1 100%}.examen-tit small{display:none}
  .reloj{font-size:1rem;padding:5px 10px}
  .examen-nav{position:sticky;bottom:0;background:linear-gradient(transparent,#eef1f8 30%);padding:14px 0 calc(8px + env(safe-area-inset-bottom));margin:6px 0 10px}
  .examen-nav .btn{flex:1;justify-content:center;padding:13px}
  .opcion{padding:13px 12px;font-size:.98rem}
  .ordenable li{padding:10px;gap:8px}.flechas button{width:38px;height:36px}
  .nav-preg button{width:36px;height:36px}
  .lista-check .items{max-height:55vh}
}
@media (hover:none){ .btn:hover,.pend:hover{transform:none} }