/* ============================================================
   IA Learn — Muro del Reto · identidad Biz Nation
   navy #14313D · amarillo #F9E526 · cian #29D2F5 · magenta #C450F5
   ============================================================ */
:root{
  --navy:#14313d;
  --navy-2:#1b3f4e;
  --navy-3:#25505f;
  --yellow:#f9e526;
  --yellow-ink:#8a7a00;
  --cyan:#29d2f5;
  --magenta:#c450f5;

  --bg:#f2f5f6;
  --surface:#ffffff;
  --ink:var(--navy);
  --ink-2:#4d6b76;
  --ink-3:#8aa1aa;
  --line:#e2e9eb;
  --radius:14px;
  --shadow:0 1px 2px rgba(20,49,61,.06), 0 10px 28px rgba(20,49,61,.07);
  --font:'Poppins','Segoe UI',system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:15px;line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3{margin:0;letter-spacing:-.02em;font-weight:700}

.ico{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ico-lg{width:30px;height:30px}

/* ============ LAYOUT ============ */
.app{display:grid;grid-template-columns:274px 1fr;min-height:100vh}

/* ============ SIDEBAR ============ */
.sidebar{
  position:sticky;top:0;height:100vh;display:flex;flex-direction:column;
  background:var(--navy);color:#fff;overflow:hidden;
}
.sidebar::after{ /* cuarto de círculo magenta, marca Biz */
  content:'';position:absolute;right:-30px;bottom:-30px;width:104px;height:104px;
  background:var(--magenta);border-radius:104px 0 0 0;opacity:.16;pointer-events:none;
}
.brand{position:relative;z-index:1;padding:20px 20px 16px}
.logo{display:block;width:168px;height:auto}
.brand-sub{display:block;margin-top:6px;font-size:11px;color:rgba(255,255,255,.55);letter-spacing:.01em}

.nav{position:relative;z-index:1;flex:1;overflow-y:auto;padding:6px 12px 20px}
.nav::-webkit-scrollbar{width:6px}
.nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:6px}
.nav-title{
  margin:20px 8px 8px;font-size:10.5px;font-weight:700;text-transform:uppercase;
  letter-spacing:.12em;color:rgba(255,255,255,.42);
}
.nav-item{
  position:relative;width:100%;display:flex;align-items:center;gap:11px;padding:9px 12px;
  background:none;border:0;border-radius:10px;text-align:left;color:rgba(255,255,255,.78);
  transition:background .12s,color .12s;
}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff}
.nav-item.is-active{background:var(--yellow);color:var(--navy);font-weight:600}
.nav-item.is-active .count{background:rgba(20,49,61,.14);color:var(--navy)}
.nav-label{flex:1;min-width:0;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-item .nav-label em{
  display:block;font-style:normal;font-size:10px;font-weight:700;letter-spacing:.11em;
  text-transform:uppercase;color:var(--yellow);line-height:1.5;
}
.nav-item .nav-label b{display:block;font-weight:500;line-height:1.3;white-space:normal}
.nav-item.is-active .nav-label em{color:var(--navy);opacity:.62}
.nav-item.is-active .nav-label b{font-weight:600}
#navSessions .nav-item{align-items:flex-start;padding-top:9px;padding-bottom:9px}
#navSessions .nav-item .ico,#navSessions .nav-item .count{margin-top:12px}
.count{
  min-width:22px;padding:1px 7px;border-radius:20px;background:rgba(255,255,255,.12);
  font-size:11px;font-weight:600;color:rgba(255,255,255,.7);text-align:center;
}

.sidebar-foot{position:relative;z-index:1;padding:14px 20px 18px;border-top:1px solid rgba(255,255,255,.1)}
.progress span{font-size:11px;color:rgba(255,255,255,.55)}
.progress-bar{height:5px;border-radius:99px;background:rgba(255,255,255,.14);overflow:hidden;margin-bottom:8px}
.progress-bar i{display:block;height:100%;width:0;background:var(--yellow);transition:width .35s}

.social{display:flex;align-items:center;gap:6px;margin-top:14px;flex-wrap:wrap}
.social a{
  display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:99px;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.72);text-decoration:none;
  font-size:11.5px;font-weight:600;transition:background .14s,color .14s;
}
.social a:hover{background:var(--yellow);color:var(--navy)}
.social .ico{width:15px;height:15px}

/* ============ PREGUNTAS FRECUENTES ============ */
.faq{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);transition:border-color .14s;   /* sin overflow:hidden: el menu de editar debe poder salirse */
}
.faq[open]{border-color:var(--cyan)}
.faq[open] summary{border-radius:var(--radius) var(--radius) 0 0}
.faq:has(.menu){position:relative;z-index:5}
.faq summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px;
  padding:16px 18px;font-family:var(--font);
}
.faq summary::-webkit-details-marker{display:none}
.faq-q{flex:1;font-size:16px;font-weight:600;color:var(--navy);line-height:1.35}
.faq-tools{display:flex;gap:2px;opacity:0;transition:opacity .14s;position:relative}
@media (hover:none){.faq-tools{opacity:1}}   /* en tactil no hay hover que revele los botones */
.faq-add{display:flex;align-items:center;gap:12px;margin-bottom:4px}
.faq-add span{color:var(--muted);font-size:13px}
.faq:hover .faq-tools,.faq[open] .faq-tools{opacity:1}
.faq-caret{
  display:grid;place-items:center;width:28px;height:28px;border-radius:50%;flex:none;
  background:var(--yellow);color:var(--navy);transition:transform .2s;
}
.faq[open] .faq-caret{transform:rotate(45deg)}
.faq-caret .ico{width:16px;height:16px;stroke-width:2.4}
.faq-body{padding:0 18px 16px;border-top:1px solid var(--line);padding-top:14px}
.faq-body .post-body p:last-child{margin-bottom:0}
.faq .post-actions{position:relative}
body.vista-faq .stream{gap:10px}

/* ============ VOCABULARIO Y SKILLS ============ */
.guia{
  display:flex;flex-direction:column;height:calc(100vh - 118px);min-height:560px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
}
.guia iframe{flex:1;width:100%;border:0;background:#fff}
body.vista-resumen .rail,
body.vista-resumen #composerTrigger,
body.vista-resumen .search{display:none}
body.vista-resumen .content{grid-template-columns:minmax(0,1fr);max-width:1320px}

/* ============ TOPBAR ============ */
.main{display:flex;flex-direction:column;min-width:0}
.topbar{
  position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 26px;
}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.topbar h1{font-size:20px}
.topbar p{margin:1px 0 0;font-size:12.5px;color:var(--ink-3)}
.topbar-right{display:flex;align-items:center;gap:10px;min-width:0;flex:1;justify-content:flex-end}

.search{
  display:flex;align-items:center;gap:8px;padding:8px 14px;border:1px solid var(--line);
  border-radius:99px;background:#f7fafb;color:var(--ink-3);min-width:0;flex:0 1 260px;
}
.search:focus-within{border-color:var(--cyan);background:#fff;box-shadow:0 0 0 3px rgba(41,210,245,.18)}
.search input{border:0;background:none;outline:none;width:100%;min-width:0;font-size:14px;color:var(--ink)}

.btn{
  display:inline-flex;align-items:center;gap:7px;padding:9px 17px;border-radius:99px;
  border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;
  white-space:nowrap;flex:none;transition:background .12s,border-color .12s,transform .08s;
}
.btn:hover{background:#eef3f4}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--yellow);border-color:var(--yellow);color:var(--navy)}
.btn-primary:hover{background:#ffef4d;border-color:#ffef4d}

.mode{
  display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border-radius:99px;
  font-size:12px;font-weight:700;letter-spacing:.02em;white-space:nowrap;flex:none;
  text-transform:uppercase;
}
.mode .ico{width:15px;height:15px;stroke-width:2.1}
.mode-admin{background:var(--navy);color:var(--yellow)}
.mode-read{background:#e9eff1;color:var(--ink-2)}

.icon-btn{
  display:grid;place-items:center;width:36px;height:36px;border:0;border-radius:10px;
  background:none;color:var(--ink-3);
}
.icon-btn:hover{background:#eef3f4;color:var(--navy)}
.only-mobile{display:none}

/* ============ CONTENIDO ============ */
.content{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;
  max-width:1200px;width:100%;margin:0 auto;padding:24px 26px 80px;
}
.stream{min-width:0;display:flex;flex-direction:column;gap:16px}

.composer{
  display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);color:var(--ink-3);
  box-shadow:var(--shadow);transition:border-color .12s;
}
.composer:hover{border-color:var(--cyan);cursor:pointer}
.composer span:first-of-type{flex:1;font-size:14.5px}
.composer-plus{
  display:grid;place-items:center;width:34px;height:34px;border-radius:50%;
  background:var(--yellow);color:var(--navy);
}
.avatar{
  width:38px;height:38px;border-radius:50%;background:var(--navy);color:var(--yellow);
  display:grid;place-items:center;font-size:12.5px;font-weight:700;flex:none;
}

/* ============ TARJETA ============ */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.post{padding:18px 20px 8px}
.post.is-pinned{border-color:var(--yellow);box-shadow:0 0 0 3px rgba(249,229,38,.22),var(--shadow)}
.post-head{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px}
.post-meta{flex:1;min-width:0}
.post-author{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14.5px;font-weight:600}
.tag{
  display:inline-flex;align-items:center;gap:5px;padding:2px 10px;border-radius:99px;
  background:var(--navy);color:#fff;font-size:11px;font-weight:600;letter-spacing:.02em;
}
.tag .ico{width:13px;height:13px;stroke-width:2.2;color:var(--cyan)}
.tag-pin{background:var(--yellow);color:var(--navy)}
.tag-pin .ico{color:var(--navy)}
.post-sub{font-size:12.5px;color:var(--ink-3)}
.post-actions{position:relative;display:flex;gap:2px}
.menu{
  position:absolute;right:0;top:38px;z-index:30;min-width:168px;padding:6px;
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 34px rgba(20,49,61,.18);
}
.menu button{
  width:100%;display:flex;align-items:center;gap:9px;padding:8px 10px;border:0;border-radius:8px;
  background:none;font-size:13.5px;text-align:left;
}
.menu button:hover{background:#eef3f4}
.menu button.danger{color:#c02b2b}
.menu .ico{width:17px;height:17px}

.post-title{font-size:22px;line-height:1.25;margin:0 0 10px;font-weight:700}
.post-body{font-size:15px;color:#31505b}
.post-body p{margin:0 0 12px}
.post-body a{color:var(--navy);text-decoration:underline;text-decoration-color:var(--cyan);text-decoration-thickness:2px;text-underline-offset:3px}
.post-body b{color:var(--navy)}
.post-body blockquote{
  margin:0 0 12px;padding:14px 18px;border-radius:10px;background:#f4fbfd;
  border:1px solid #cdeef8;border-left:4px solid var(--cyan);color:#2c4a55;
}
.post-media{margin:4px 0 14px;border-radius:12px;overflow:hidden;background:#000;border:1px solid var(--line)}
.post-media video,.post-media iframe{display:block;width:100%;aspect-ratio:16/9;border:0;background:#000}

.reactions{display:flex;align-items:center;gap:8px;padding:10px 0;border-top:1px solid var(--line);margin-top:4px}
.react{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:99px;
  border:1px solid var(--line);background:#fff;font-size:13px;font-weight:500;color:var(--ink-2);
  transition:background .12s,border-color .12s,color .12s;
}
.react:hover{background:#f4fbfd;border-color:var(--cyan);color:var(--navy)}
.react.is-on{background:var(--yellow);border-color:var(--yellow);color:var(--navy);font-weight:700}
.react .ico{width:17px;height:17px}
.react-total{margin-left:auto;font-size:12.5px;color:var(--ink-3)}

/* ============ VACÍO ============ */
.empty{
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;
  padding:62px 30px;color:var(--ink-2);
  background:var(--surface);border:1px dashed #ccdbdf;border-radius:var(--radius);
}
.empty::before{ /* círculo rayado cian, marca Biz */
  content:'';position:absolute;left:-56px;top:-56px;width:170px;height:170px;border-radius:50%;
  background:repeating-linear-gradient(45deg,var(--cyan) 0 5px,transparent 5px 12px);
  opacity:.28;pointer-events:none;
}
.empty::after{
  content:'';position:absolute;right:-40px;bottom:-40px;width:120px;height:120px;
  background:var(--magenta);border-radius:120px 0 0 0;opacity:.14;pointer-events:none;
}
.empty>*{position:relative;z-index:1}
.empty .ico{width:34px;height:34px;color:#b7cbd1}
.empty h3{font-size:17px;color:var(--navy)}
.empty p{margin:0;font-size:13.5px;max-width:340px}
.empty .btn{margin-top:10px}
.empty .btn .ico{width:18px;height:18px;color:currentColor}   /* el icono del boton no hereda el tamaño decorativo */

/* ============ ORDENAR PUBLICACIONES ============ */
/* Solo las ve el admin: suben o bajan la publicación dentro de su sección */
.mover{display:inline-flex;align-items:center;gap:2px;margin-right:2px}
.mover .icon-btn{width:26px;height:26px;border-radius:8px}
.mover .icon-btn .ico{width:15px;height:15px}
.mover .icon-btn:disabled{opacity:.25;cursor:default;background:none}
.faq-tools .mover{margin-right:4px}

/* ============ QUIZZES ============ */
/* Colores con las variables de la marca: tema.css las cambia y el quiz las sigue */
body.vista-quiz .rail,
body.vista-quiz #composerTrigger{display:none}
body.vista-quiz .content{grid-template-columns:minmax(0,1fr);max-width:1080px}

.quiz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}
.quiz-card{
  display:flex;flex-direction:column;gap:8px;padding:20px;
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--yellow);
  border-radius:var(--radius);box-shadow:var(--shadow);
}
.quiz-card-top{display:flex;align-items:flex-start;gap:10px}
.quiz-card h3{flex:1;font-size:16.5px;line-height:1.25;color:var(--navy)}
.quiz-estado{
  flex:none;padding:2px 10px;border-radius:999px;background:var(--bg);
  border:1px solid var(--line);font-size:11px;font-weight:700;color:var(--ink-3);
}
.quiz-estado.is-on{background:var(--yellow);border-color:transparent;color:var(--navy)}
.quiz-desc{margin:0;font-size:14px;color:var(--ink-2)}
.quiz-meta{margin:0;font-size:12.5px;color:var(--ink-3)}
.quiz-meta b{color:var(--ink)}
.quiz-acciones{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.quiz-acciones .btn{padding:8px 15px;font-size:13.5px}
.quiz-acciones .btn:disabled,.quiz-enviar .btn:disabled{opacity:.5;cursor:default}

.quiz-barra{height:7px;border-radius:999px;background:var(--line);overflow:hidden}
.quiz-barra i{display:block;height:100%;background:var(--cyan);transition:width .3s}
.quiz-barra.is-baja i{background:var(--magenta)}

.quiz-resumen{padding:20px 22px;margin-bottom:16px}
.quiz-resumen h3{font-size:15px;margin-bottom:12px}
.quiz-cifras{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:4px 0 8px}
.quiz-cifras div{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.quiz-cifras b{display:block;font-family:var(--display,var(--font));font-size:24px;color:var(--navy);line-height:1.1}
.quiz-cifras span{font-size:12.5px;color:var(--ink-3)}

.quiz-responder{padding:22px 24px;max-width:780px;margin:0 auto}
.quiz-volver{padding:6px 14px;font-size:13px;margin-bottom:14px}
.quiz-titulo{font-size:22px;margin-bottom:6px}
.quiz-sub{font-size:14px;margin:22px 0 10px}
.quiz-nombre{margin:16px 0 4px;max-width:340px}
.quiz-lista{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:14px}
.quiz-pregunta{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--surface)}
.quiz-pregunta.is-bien{border-left:4px solid var(--cyan)}
.quiz-pregunta.is-mal{border-left:4px solid #c0392b}
.quiz-enunciado{display:flex;gap:10px;margin:0 0 12px;font-size:15.5px;font-weight:600;line-height:1.35}
.quiz-enunciado span{
  flex:none;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;
  background:var(--yellow);color:var(--navy);font-size:12.5px;font-weight:700;
}
.quiz-opciones{display:flex;flex-direction:column;gap:8px}
.quiz-opcion{
  display:flex;align-items:flex-start;gap:10px;padding:11px 14px;cursor:pointer;
  border:1px solid var(--line);border-radius:12px;background:var(--bg);font-size:14.5px;
  transition:border-color .14s,background .14s;
}
.quiz-opcion:hover{border-color:var(--cyan);background:var(--surface)}
.quiz-opcion.is-on{border-color:var(--navy);background:var(--surface);box-shadow:inset 3px 0 0 var(--yellow)}
.quiz-opcion input{margin-top:2px;accent-color:var(--navy)}
.quiz-respuesta{margin:0;font-size:14px;color:var(--ink-2)}
.quiz-respuesta b{color:var(--ink)}
.quiz-correcta{margin-top:4px;color:var(--navy);font-weight:600}
.quiz-enviar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:20px}
.quiz-msg{margin:0;font-size:13px;color:#c0392b}
.quiz-puntaje{
  display:flex;flex-direction:column;gap:6px;padding:18px 20px;margin-bottom:18px;
  background:var(--navy);color:#fff;border-radius:var(--radius);
}
.quiz-puntaje b{font-family:var(--display,var(--font));font-size:30px;line-height:1}
.quiz-puntaje span{font-size:13.5px;color:rgba(255,255,255,.72)}
.quiz-puntaje .quiz-barra{background:rgba(255,255,255,.16);margin-top:6px}
.quiz-puntaje .quiz-barra i{background:var(--yellow)}

.quiz-tabla{overflow-x:auto}
.quiz-tabla table{width:100%;border-collapse:collapse;font-size:14px}
.quiz-tabla th,.quiz-tabla td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--line)}
.quiz-tabla th{font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3)}

/* Editor del admin */
.quiz-pregunta-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.quiz-num{font-size:13px;font-weight:700;color:var(--ink-3)}
.quiz-opciones-edit{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.quiz-opcion-edit{display:flex;align-items:center;gap:10px;padding:6px 10px;border:1px solid var(--line);border-radius:12px}
.quiz-opcion-edit.is-on{border-color:var(--navy);box-shadow:inset 3px 0 0 var(--yellow)}
.quiz-opcion-edit input[type="radio"]{accent-color:var(--navy);flex:none}
.quiz-opcion-edit input[type="text"]{flex:1;min-width:0;border:0;background:none;outline:none;font-size:14.5px}
.quiz-mini{padding:7px 14px;font-size:13px;margin-top:12px}
.quiz-activo{margin:12px 0 4px}

/* Limpiar las respuestas de un quiz (para borrar las pruebas) */
.quiz-borrar-celda{width:40px;text-align:right}
.quiz-borrar-celda .icon-btn{width:28px;height:28px;border-radius:9px;opacity:.55}
.quiz-borrar-celda .icon-btn:hover{opacity:1;color:#c0392b}
.quiz-vaciar{margin-top:16px;font-size:13.5px}
.quiz-vaciar:hover{color:#c0392b;border-color:currentColor}
.quiz-nota{margin:8px 0 0;font-size:12.5px;color:var(--ink-3)}

@media (max-width:600px){
  .quiz-grid{grid-template-columns:1fr}
  .quiz-responder{padding:18px 16px}
}

/* ============ RAIL ============ */
.rail{display:flex;flex-direction:column;gap:16px}
.rail-card{padding:16px 18px}
.rail-card h3{font-size:14px;margin-bottom:12px}
.rail-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.rail-list button{
  width:100%;display:flex;align-items:center;gap:10px;padding:7px 8px;border:0;border-radius:9px;
  background:none;text-align:left;font-size:13.5px;color:var(--ink-2);
}
.rail-list button:hover{background:#eef3f4;color:var(--navy)}
.rail-list .dot{width:8px;height:8px;border-radius:50%;background:#d6e2e5;flex:none}
.rail-list .dot.on{background:var(--yellow);box-shadow:0 0 0 3px rgba(249,229,38,.28)}
.rail-list span.t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rail-list em{font-style:normal;font-size:11.5px;color:var(--ink-3)}
.tips{margin:0;padding-left:18px;font-size:13px;color:var(--ink-2);display:flex;flex-direction:column;gap:8px}
.tips b{color:var(--navy)}

/* ============ MODAL ============ */
.overlay{
  position:fixed;inset:0;z-index:60;background:rgba(20,49,61,.55);backdrop-filter:blur(3px);
  display:grid;place-items:center;padding:24px;
}
.modal{
  width:min(640px,100%);max-height:90vh;display:flex;flex-direction:column;
  background:#fff;border-radius:18px;box-shadow:0 26px 64px rgba(0,0,0,.3);overflow:hidden;
  animation:pop .16s ease-out;
}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.99)}}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;padding:16px 20px;
  background:var(--navy);color:#fff;
}
.modal-head h2{font-size:17px}
.modal-head .icon-btn{color:rgba(255,255,255,.7)}
.modal-head .icon-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.modal-body{padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}
.modal-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 20px;border-top:1px solid var(--line);background:#f7fafb;
}
.modal-foot>div{display:flex;gap:8px;margin-left:auto}
.modal-msg{font-size:12.5px;color:#c02b2b}

.field{display:flex;flex-direction:column;gap:6px}
.field>span{font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;
  background:#fff;outline:none;font-size:14.5px;
}
.field textarea{resize:vertical;min-height:120px;border-radius:0 0 10px 10px;border-top:0}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(41,210,245,.18)}
.editor-tools{
  display:flex;align-items:center;gap:4px;padding:6px 8px;border:1px solid var(--line);
  border-radius:10px 10px 0 0;background:#f7fafb;
}
.editor-tools button{width:30px;height:30px;display:grid;place-items:center;border:0;border-radius:7px;background:none;color:var(--ink-2)}
.editor-tools button:hover{background:#e6eef0;color:var(--navy)}
.editor-tools .hint{margin-left:6px;font-size:11.5px;color:var(--ink-3)}
.editor-tools .ico{width:16px;height:16px}

.tabs{display:flex;gap:6px;margin-bottom:10px}
.tab{
  display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border:1px solid var(--line);
  border-radius:99px;background:#fff;font-size:13px;font-weight:500;color:var(--ink-2);
}
.tab .ico{width:16px;height:16px}
.tab.is-active{background:var(--navy);border-color:var(--navy);color:#fff}
.tab.is-active .ico{color:var(--yellow)}

.dropzone{
  display:flex;flex-direction:column;align-items:center;gap:4px;padding:28px;text-align:center;
  border:1.5px dashed #c6d7dc;border-radius:12px;background:#f7fafb;color:var(--ink-3);cursor:pointer;
  transition:border-color .12s,background .12s;
}
.dropzone:hover,.dropzone.is-over{border-color:var(--cyan);background:#f0fbfe}
.dropzone p{margin:2px 0 0;font-size:14px;color:var(--navy)}
.dropzone small{font-size:12px}
.dropzone-md{padding:16px}
.dropzone-md .ico{width:22px;height:22px}
.filechip{
  display:flex;align-items:center;gap:9px;padding:11px 13px;border:1px solid var(--line);
  border-radius:10px;background:#f7fafb;font-size:13.5px;
}
.filechip span{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.filechip button{border:0;background:none;color:var(--ink-3);display:grid;place-items:center}
.filechip .ico{width:17px;height:17px}

.check{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-2)}
.check input{width:16px;height:16px;accent-color:var(--navy)}

/* ============ CATÁLOGO DE SKILLS ============ */
/* Las áreas se filtran desde el sidebar, no desde una barra superior */
.nav-areas{margin:2px 0 6px;padding-left:10px;border-left:2px solid rgba(255,255,255,.1)}
.nav-area{
  width:100%;display:flex;align-items:center;gap:8px;padding:6px 10px;border:0;
  border-radius:9px;background:none;text-align:left;color:rgba(255,255,255,.72);font-size:13px;
}
.nav-area:hover{background:rgba(255,255,255,.07);color:#fff}
.nav-area.is-on{background:rgba(255,255,255,.12);color:#fff;font-weight:600}
.nav-area .t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-area em{
  font-style:normal;font-size:11px;padding:1px 7px;border-radius:99px;
  background:rgba(255,255,255,.1);color:rgba(255,255,255,.72);
}
.nav-area.is-on em{background:var(--yellow);color:var(--ink);font-weight:700}

.sk-head{display:flex;align-items:center;gap:12px;margin-bottom:4px}
.sk-head .btn{margin-left:auto}
.sk-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:14px}
.sk-card{
  position:relative;display:flex;gap:14px;padding:20px;cursor:pointer;
  background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--navy);
  border-radius:var(--radius);box-shadow:var(--shadow);
  transition:transform .12s,border-color .14s,box-shadow .14s;
}
.sk-card:hover{transform:translateY(-2px);border-color:var(--navy);box-shadow:0 18px 40px -22px rgba(43,79,232,.5)}
.sk-num{
  font-family:var(--font);font-size:22px;font-weight:800;color:#c8d2e8;
  line-height:1;flex:none;letter-spacing:-.03em;
}
.sk-card:hover .sk-num{color:var(--navy)}
.sk-body{flex:1;min-width:0}
.sk-area{
  display:block;font-family:var(--font);font-size:10px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:5px;
}
.sk-card h3{font-size:16.5px;line-height:1.25;margin-bottom:10px;color:var(--ink)}
.sk-tags{display:flex;flex-wrap:wrap;gap:6px}
.sk-tag{
  padding:3px 11px;border-radius:99px;background:var(--bg);
  border:1px solid var(--line);font-size:11.5px;font-weight:600;color:var(--ink-2);
}
.sk-tag.is-lvl{background:#eaf9fd;border-color:transparent;color:#0d2531}

.modal-sk{width:min(760px,100%)}
.modal-sk .modal-head{align-items:flex-start}
.sk-num-big{
  display:block;font-family:var(--font);font-size:12px;font-weight:700;
  color:rgba(255,255,255,.72);margin-bottom:2px;
}
.sk-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.sk-admin{display:inline-flex;gap:8px;margin-left:auto}
.btn-danger{border-color:#f0c4bd;color:#c0392b}
.btn-danger:hover{background:#fdeeeb}
.sk-block{display:flex;flex-direction:column;gap:6px}
.sk-label{
  font-family:var(--font);font-size:11px;font-weight:600;text-transform:uppercase;
  letter-spacing:.09em;color:var(--ink-2);
}
.sk-block p{margin:0;font-size:15.5px;color:var(--ink-2)}
.sk-prompt{
  margin:0;padding:16px 18px;border-radius:14px;background:var(--navy);color:#d7dcee;
  font-family:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12.8px;line-height:1.65;white-space:pre-wrap;word-break:break-word;
  max-height:44vh;overflow-y:auto;
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
body.vista-skills .rail,
body.vista-skills #composerTrigger{display:none}
body.vista-skills .content{grid-template-columns:minmax(0,1fr);max-width:1320px}
@media (max-width:600px){
  .sk-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
}

/* ============ OJITO: CLASES OCULTAS ============ */
/* Cada estudiante apaga las clases que no quiere ver. Es una preferencia
   de su navegador: el admin no ve el ojito y el contenido no se toca.   */
.nav-row{position:relative}
.nav-eye{
  position:absolute;right:6px;top:16px;display:none;place-items:center;
  width:30px;height:30px;border:0;border-radius:8px;background:none;cursor:pointer;
  color:rgba(255,255,255,.45);transition:background .12s,color .12s;
}
.nav-eye .ico{width:17px;height:17px}
.nav-eye:hover{background:rgba(255,255,255,.12);color:#fff}
body.modo-estudiante .nav-eye{display:grid}
body.modo-estudiante #navSessions .nav-item{padding-right:44px}
.nav-item.is-active + .nav-eye{color:rgba(20,49,61,.5)}
.nav-item.is-active + .nav-eye:hover{background:rgba(20,49,61,.1);color:var(--navy)}
.nav-row.is-hidden .nav-item:not(.is-active){opacity:.45}
.nav-row.is-hidden .nav-item:not(.is-active) + .nav-eye{color:var(--yellow)}
body:not(.modo-estudiante) .solo-estudiante{display:none}

.rail-list li.is-hidden button{opacity:.45}
.rail-list li.is-hidden .dot{background:#d6e2e5;box-shadow:none}

.hidden-bar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:10px 12px 10px 14px;background:var(--surface);
  border:1px solid var(--line);border-left:4px solid var(--yellow);
  border-radius:var(--radius);box-shadow:var(--shadow);font-size:13.5px;color:var(--ink-2);
}
.hidden-bar .ico{width:18px;height:18px;color:var(--ink-3)}
.hidden-bar span{flex:1;min-width:0}
.hidden-bar b{color:var(--navy)}
.hidden-bar .btn{padding:6px 14px;font-size:13px}

/* ============ TOAST ============ */
.toast{
  position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:80;
  padding:11px 20px;border-radius:99px;background:var(--navy);color:var(--yellow);
  font-size:13.5px;font-weight:600;box-shadow:0 14px 34px rgba(20,49,61,.35);
  animation:pop .16s ease-out;
}

/* ============ RESPONSIVE ============ */
@media (max-width:1180px){
  .mode{font-size:0;padding:8px;gap:0}
  .mode .ico{width:17px;height:17px}
}
@media (max-width:1080px){
  .rail{display:none}
  .content{grid-template-columns:minmax(0,1fr)}
}
.logo-mini{width:30px;height:30px;flex:none;background:var(--navy);border-radius:9px;padding:3px}

@media (max-width:820px){
  .mode{display:none}                 /* la insignia de modo estorba en pantalla chica */
  .topbar-left{gap:8px}
  .topbar h1{font-size:17px}
  .topbar p{display:none}
  .search{flex:0 0 auto;padding:8px}
  .search input{width:0;padding:0}
  .search:focus-within{flex:1 1 auto}
  .search:focus-within input{width:100%}
  .app{grid-template-columns:1fr}
  .sidebar{
    position:fixed;z-index:50;width:274px;transform:translateX(-100%);
    transition:transform .2s;box-shadow:0 0 40px rgba(0,0,0,.28);
  }
  .sidebar.is-open{transform:none}
  .only-mobile{display:grid}
  .content{padding:16px}
  .topbar{padding:12px 16px}
}

/* ============ IMAGENES ADJUNTAS ============ */
.post-media.es-imagen{background:none;aspect-ratio:auto}
.post-media.es-imagen img{
  display:block;width:100%;height:auto;max-height:520px;object-fit:contain;
  border-radius:12px;background:var(--bg);
}

/* ============ PREGUNTAS DE ESTUDIANTES ============ */
/* El estudiante deja su pregunta; entra a Preguntas frecuentes sin respuesta
   y el admin la responde. Formulario en la columna derecha y arriba de las FAQ. */
.u-mark{background:linear-gradient(transparent 82%, var(--yellow) 82%);padding:0 1px}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.faq.is-pending{border-style:dashed;border-color:#c6d7dc}
.faq.is-pending[open]{border-color:var(--cyan)}
.faq-q .faq-badge{
  display:inline-block;vertical-align:2px;margin-left:8px;padding:2px 9px;border-radius:99px;
  background:var(--yellow);color:var(--navy);font-size:10.5px;font-weight:700;
  letter-spacing:.04em;text-transform:uppercase;white-space:nowrap;
}
.faq-reply{padding:7px 14px;font-size:13px}
.faq-reply .ico{width:15px;height:15px}
.faq-pending-note{margin:0;font-size:14px;color:var(--ink-2)}
.faq-add span{color:var(--ink-2)}
.faq-add span b{color:var(--navy)}
.faq.is-new{animation:faq-nueva 2s ease}
@keyframes faq-nueva{
  0%,30%{box-shadow:0 0 0 4px var(--yellow),var(--shadow)}
  100%{box-shadow:0 0 0 4px rgba(249,229,38,0),var(--shadow)}
}
.count.is-alert{background:var(--yellow);color:var(--navy);font-weight:700}
.nav-item.is-active .count.is-alert{background:var(--navy);color:var(--yellow)}

.rail-pregunta{padding:18px}
.rail-pregunta:empty{display:none}
.pregunta{display:flex;flex-direction:column;gap:12px}
.pregunta-faq{padding:18px 20px;margin-bottom:6px}
.pregunta-head{display:flex;gap:12px;align-items:flex-start}
.pregunta-ico{
  display:grid;place-items:center;width:38px;height:38px;border-radius:12px;flex:none;
  background:#eaf9fd;color:var(--navy);
}
.pregunta .pregunta-ico{background:var(--navy);color:var(--yellow)}
.pregunta-ico .ico{width:20px;height:20px}
.pregunta-head h3{font-size:15px;margin:0 0 3px}
.pregunta-head p{margin:0;font-size:13px;line-height:1.5;color:var(--ink-2)}
.pregunta-head p b{color:var(--navy)}
.pregunta textarea{
  width:100%;min-height:84px;resize:vertical;padding:11px 13px;
  border:1px solid var(--line);border-radius:12px;background:#fff;
  font-size:14px;line-height:1.5;outline:none;transition:border-color .14s,box-shadow .14s;
}
.pregunta textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(41,210,245,.18)}
.pregunta-foot{display:flex;align-items:center;justify-content:space-between;gap:10px}
.pregunta-cuenta{font-size:11.5px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.pregunta-foot .btn{padding:9px 16px;font-size:13.5px}
.pregunta-foot .btn:disabled{opacity:.6;cursor:default}
.pregunta-msg{margin:0;font-size:13px;color:#c0392b}
.pregunta-msg:empty{display:none}
.pregunta-msg.is-ok{color:var(--ink-2)}
.link-btn{
  padding:0;border:0;background:none;font:inherit;font-weight:600;color:var(--navy);
  text-decoration:underline;text-decoration-color:var(--cyan);text-decoration-thickness:2px;text-underline-offset:3px;
}
.pregunta-ir{width:100%;justify-content:center;margin-top:14px}
body.vista-faq .rail-pregunta{display:none}   /* en la vista de FAQ el formulario ya está arriba */
/* Resaltado discreto del formulario del estudiante (no de la tarjeta del admin) */
.rail-pregunta:has(.pregunta),
.pregunta-faq{
  background:linear-gradient(180deg,#eefafd 0%,#fff 60%);
  border-color:rgba(41,210,245,.35);
}
@media (max-width:600px){
  .faq summary{flex-wrap:wrap}
  .faq-reply{order:3}
}

/* ============ SKILLS: PRENDER Y APAGAR (admin) ============ */
.sk-switch{
  /* z-index: la opacidad de las apagadas pinta .sk-body encima y le robaba el clic */
  position:absolute;top:12px;right:12px;z-index:2;display:inline-flex;align-items:center;gap:5px;
  padding:4px 10px;border-radius:99px;border:1px solid var(--line);background:var(--surface);
  font-size:11.5px;font-weight:700;color:var(--ink-2);
}
.sk-switch .ico{width:14px;height:14px}
.sk-switch:hover{border-color:var(--navy);color:var(--navy)}
.sk-card .sk-body{padding-right:78px}
.sk-card.is-off{border-left-color:var(--line);background:var(--bg)}
.sk-card.is-off .sk-body{opacity:.55}
.sk-card.is-off .sk-switch{background:var(--navy);border-color:var(--navy);color:#fff}

/* ============ PDF Y OFFICE ADJUNTOS ============ */
.post-media.es-pdf{background:var(--surface)}
.post-media.es-pdf iframe{aspect-ratio:auto;height:560px;background:#f3f4f7}
.pdf-bar{display:flex;align-items:center;gap:10px;padding:10px 12px;border-top:1px solid var(--line)}
.post-media.sin-visor .pdf-bar{border-top:0}   /* Office en modo local: solo la barra */
.pdf-bar > .ico{color:var(--ink-3)}
.pdf-bar span{flex:1;min-width:0;font-size:13.5px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pdf-bar .btn{padding:6px 14px;font-size:13px;text-decoration:none;color:var(--ink)}
@media (max-width:700px){ .post-media.es-pdf iframe{height:420px} }