/* MagísterX IA 1.5.0 · Tutor IA del aula virtual (reemplaza por completo los estilos anteriores). */
.mia-course-floating-host{display:contents}
.mxt{--mxt-p1:#5b21d6;--mxt-p2:#8b3cf7;--mxt-ink:#17142b;--mxt-muted:#6f6a85;--mxt-line:#e7e2f5;--mxt-soft:#f5f2ff;--mxt-bg:#fbfaff;
  position:fixed;right:0;bottom:0;width:0;height:0;z-index:9000;font-family:inherit;color:var(--mxt-ink);-webkit-font-smoothing:antialiased}
.mxt *,.mxt *::before,.mxt *::after{box-sizing:border-box}
.mxt.is-hidden{display:none!important}
.mxt [hidden]{display:none}
.mxt:not(.is-ready) .mxt-panel,.mxt:not(.is-ready) .mxt-backdrop{display:none}
.mxt button{font-family:inherit;letter-spacing:normal;text-transform:none;margin:0}
.mxt svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}

/* Botón flotante: pequeño, se expande con el nombre al pasar el cursor. */
.mxt-fab{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:calc(18px + var(--mxt-lift,0px) + env(safe-area-inset-bottom));display:inline-flex;align-items:center;gap:0;height:48px;min-width:48px;padding:0 14px;border:0;border-radius:999px;background:linear-gradient(135deg,var(--mxt-p1),var(--mxt-p2));color:#fff;box-shadow:0 10px 26px rgba(76,29,190,.34),0 2px 6px rgba(76,29,190,.2);cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,opacity .2s ease,gap .2s ease}
.mxt-fab svg{width:20px;height:20px;fill:#fff;stroke:none}
.mxt-fab-label{max-width:0;overflow:hidden;white-space:nowrap;font-size:14px;font-weight:700;line-height:1;transition:max-width .25s ease}
.mxt-fab:focus-visible{outline:3px solid rgba(139,60,247,.45);outline-offset:3px}
@media (hover:hover){.mxt-fab:hover{gap:8px;transform:translateY(-1px);box-shadow:0 14px 32px rgba(76,29,190,.4)}.mxt-fab:hover .mxt-fab-label{max-width:90px}}
.mxt[data-state="open"] .mxt-fab{opacity:0;transform:scale(.6);pointer-events:none}

.mxt-hint{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:calc(76px + var(--mxt-lift,0px) + env(safe-area-inset-bottom));max-width:230px;padding:9px 13px;border:1px solid var(--mxt-line);border-radius:14px 14px 4px 14px;background:#fff;color:var(--mxt-ink);font-size:13px;line-height:1.35;text-align:left;box-shadow:0 10px 28px rgba(23,20,43,.14);cursor:pointer;animation:mxtIn .25s ease}
.mxt-hint strong{color:var(--mxt-p1)}

/* Panel */
.mxt-backdrop{position:fixed;inset:0;background:rgba(18,12,40,.38);opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s;display:none}
.mxt-panel{position:fixed;right:max(20px,env(safe-area-inset-right));bottom:calc(20px + var(--mxt-lift,0px) + env(safe-area-inset-bottom));display:flex;flex-direction:column;width:min(400px,calc(100vw - 40px));height:min(620px,calc(100vh - 120px - var(--mxt-lift,0px)));height:min(620px,calc(100dvh - 120px - var(--mxt-lift,0px)));min-height:360px;background:#fff;border:1px solid var(--mxt-line);border-radius:22px;box-shadow:0 26px 70px rgba(23,14,64,.24),0 4px 14px rgba(23,14,64,.08);overflow:hidden;transform-origin:bottom right;opacity:0;visibility:hidden;transform:translateY(14px) scale(.97);transition:opacity .2s ease,transform .22s cubic-bezier(.2,.8,.2,1),visibility .22s}
.mxt[data-state="open"] .mxt-panel{opacity:1;visibility:visible;transform:none}
.mxt-grip{display:none}

.mxt-head{display:flex;align-items:center;gap:10px;flex:0 0 auto;padding:12px 10px 12px 14px;background:linear-gradient(120deg,#4c1cc8,#7a2ff0);color:#fff}
.mxt-avatar{display:grid;place-items:center;flex:0 0 34px;width:34px;height:34px;border-radius:11px;background:rgba(255,255,255,.18)}
.mxt-avatar svg{width:18px;height:18px;fill:#fff;stroke:none}
.mxt-title{flex:1 1 auto;min-width:0}
.mxt-title strong{display:block;font-size:15px;font-weight:800;line-height:1.2;color:#fff}
.mxt-where{display:block;margin-top:2px;font-size:11.5px;line-height:1.3;color:rgba(255,255,255,.82);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-variant-numeric:tabular-nums}
.mxt-actions{display:flex;gap:2px;flex:0 0 auto}
.mxt-icon{display:grid;place-items:center;width:34px;height:34px;padding:0;border:0;border-radius:10px;background:transparent;color:#fff;cursor:pointer;transition:background .15s}
.mxt-icon svg{width:18px;height:18px}
.mxt-icon:hover,.mxt-icon:focus-visible{background:rgba(255,255,255,.16);outline:none}

.mxt-body{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:14px 14px 6px;background:var(--mxt-bg);display:flex;flex-direction:column;gap:10px;scroll-behavior:smooth}
.mxt-msg{max-width:90%;padding:10px 13px;border-radius:16px;font-size:13.5px;line-height:1.55;word-wrap:break-word;overflow-wrap:anywhere;animation:mxtIn .18s ease}
.mxt-bot{align-self:flex-start;background:#fff;border:1px solid var(--mxt-line);border-bottom-left-radius:6px;color:var(--mxt-ink)}
.mxt-user{align-self:flex-end;background:linear-gradient(135deg,#5b21d6,#7c3aed);color:#fff;border-bottom-right-radius:6px;white-space:pre-wrap}
.mxt-welcome{background:var(--mxt-soft);border-color:#e4dcfb}
.mxt-error{background:#fff5f5;border-color:#f5c2c2;color:#8a1c1c}
.mxt-bot p{margin:0 0 8px}.mxt-bot p:last-child{margin-bottom:0}
.mxt-bot ul,.mxt-bot ol{margin:4px 0 8px;padding-left:20px}.mxt-bot li{margin:2px 0}
.mxt-bot strong{font-weight:700}
.mxt-bot a{color:var(--mxt-p1);text-decoration:underline;text-underline-offset:2px}
.mxt-ts{display:inline-flex;align-items:center;gap:3px;margin:0 1px;padding:1px 7px;border:0;border-radius:999px;background:#ede7ff;color:#4c1d95!important;font-size:12px;font-weight:700;line-height:1.6;text-decoration:none!important;cursor:pointer;vertical-align:baseline;font-variant-numeric:tabular-nums;transition:background .15s}
.mxt-ts:hover,.mxt-ts:focus-visible{background:#ddd2ff;outline:none}
.mxt-free-note{font-size:11.5px;color:#0f7a4a}
.mxt-sources{display:grid;gap:6px;margin-top:10px;padding-top:9px;border-top:1px solid var(--mxt-line)}
.mxt-sources>span{font-size:11px;font-weight:700;color:var(--mxt-muted);text-transform:uppercase;letter-spacing:.04em}
.mxt-sources a{display:block;padding:7px 9px;border:1px solid var(--mxt-line);border-radius:10px;font-size:12.5px;text-decoration:none!important;color:var(--mxt-ink)!important}
.mxt-sources small{display:block;color:var(--mxt-muted);font-size:11px}
.mxt-index{list-style:none;margin:6px 0 0!important;padding:0!important;display:grid;gap:6px}
.mxt-index li{display:flex;align-items:baseline;gap:6px;margin:0}

.mxt-typing{display:inline-flex;gap:4px;align-items:center;padding:12px 14px}
.mxt-typing span{width:6px;height:6px;border-radius:50%;background:#a78bfa;animation:mxtDot 1s infinite ease-in-out}
.mxt-typing span:nth-child(2){animation-delay:.15s}.mxt-typing span:nth-child(3){animation-delay:.3s}

/* Práctica */
.mxt-quiz{width:100%;max-width:100%}
.mxt-quiz-n{font-size:11px;font-weight:700;color:var(--mxt-muted);text-transform:uppercase;letter-spacing:.04em}
.mxt-quiz-q{font-weight:700}
.mxt-quiz-opts{display:grid;gap:6px;margin-top:6px}
.mxt-opt{width:100%;padding:9px 11px;border:1px solid var(--mxt-line);border-radius:11px;background:#fff;color:var(--mxt-ink);font-size:13px;line-height:1.35;text-align:left;cursor:pointer;transition:border-color .15s,background .15s}
.mxt-opt:hover:not(:disabled){border-color:#b9a3f5;background:var(--mxt-soft)}
.mxt-opt:disabled{cursor:default}
.mxt-opt.is-right{border-color:#1f9d63;background:#ecfbf3}
.mxt-opt.is-wrong{border-color:#e05252;background:#fff2f2}
.mxt-quiz-fb{margin-top:8px;padding:8px 10px;border-radius:10px;font-size:12.5px}
.mxt-quiz-fb.is-right{background:#ecfbf3}.mxt-quiz-fb.is-wrong{background:#fff6ec}
.mxt-quiz-next{margin-top:8px;padding:7px 12px;border:0;border-radius:10px;background:var(--mxt-p1);color:#fff;font-size:12.5px;font-weight:700;cursor:pointer}
.mxt-quiz-next:disabled{opacity:.5}

/* Atajos */
.mxt-chips{display:flex;gap:6px;flex:0 0 auto;padding:8px 12px 2px;overflow-x:auto;scrollbar-width:none;background:#fff;border-top:1px solid var(--mxt-line)}
.mxt-chips::-webkit-scrollbar{display:none}
.mxt-chips.has-more{-webkit-mask-image:linear-gradient(to right,#000 82%,transparent);mask-image:linear-gradient(to right,#000 82%,transparent)}
.mxt-chips.has-less.has-more{-webkit-mask-image:linear-gradient(to right,transparent,#000 12%,#000 82%,transparent);mask-image:linear-gradient(to right,transparent,#000 12%,#000 82%,transparent)}
.mxt-chips.has-less:not(.has-more){-webkit-mask-image:linear-gradient(to right,transparent,#000 12%);mask-image:linear-gradient(to right,transparent,#000 12%)}
.mxt-chip{display:inline-flex;align-items:center;gap:5px;flex:0 0 auto;height:30px;padding:0 11px;border:1px solid #e1d8fb;border-radius:999px;background:#fff;color:#4c1d95;font-size:12.5px;font-weight:600;white-space:nowrap;cursor:pointer;transition:background .15s,border-color .15s}
.mxt-chip small{padding:1px 5px;border-radius:6px;background:#e7f8ef;color:#0f7a4a;font-size:10px;font-weight:700}
.mxt-chip:hover:not(:disabled){background:var(--mxt-soft);border-color:#c9b6fb}
.mxt-chip:disabled{opacity:.55;cursor:wait}

/* Escritura */
.mxt-form{display:flex;align-items:flex-end;gap:8px;flex:0 0 auto;padding:8px 12px 6px;background:#fff}
.mxt-form textarea{flex:1 1 auto;width:100%;min-height:42px;max-height:120px;margin:0;padding:10px 13px;border:1px solid #ddd6ee;border-radius:14px;background:#faf9fd;color:var(--mxt-ink);font:inherit;font-size:14px;line-height:1.4;resize:none;outline:none;box-shadow:none;transition:border-color .15s,box-shadow .15s}
.mxt-form textarea:focus{border-color:#9b7bf2;box-shadow:0 0 0 3px rgba(91,33,214,.1);background:#fff}
.mxt-send{display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;padding:0;border:0;border-radius:13px;background:linear-gradient(135deg,var(--mxt-p1),var(--mxt-p2));color:#fff;cursor:pointer;transition:opacity .15s,transform .15s}
.mxt-send:hover:not(:disabled){transform:translateY(-1px)}
.mxt-send:disabled{opacity:.5;cursor:wait}
.mxt-foot{display:flex;justify-content:space-between;gap:10px;flex:0 0 auto;padding:0 14px 10px;background:#fff;color:#9893ab;font-size:10.5px;line-height:1.3}
.mxt-foot b{color:var(--mxt-p1);font-weight:800}
.mxt .screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* Tablet */
@media (max-width:1024px){
  .mxt-panel{right:16px;bottom:calc(16px + var(--mxt-lift,0px) + env(safe-area-inset-bottom));width:min(380px,calc(100vw - 32px));height:min(600px,calc(100vh - 100px - var(--mxt-lift,0px)));height:min(600px,calc(100dvh - 100px - var(--mxt-lift,0px)))}
  .mxt-fab{right:16px;bottom:calc(16px + var(--mxt-lift,0px) + env(safe-area-inset-bottom))}
}

/* Celular: hoja inferior sobre el teclado */
@media (max-width:640px){
  .mxt-fab{right:14px;bottom:calc(14px + var(--mxt-lift,0px) + env(safe-area-inset-bottom));height:46px;min-width:46px;padding:0 13px}
  .mxt-hint{right:14px;bottom:calc(68px + var(--mxt-lift,0px) + env(safe-area-inset-bottom))}
  .mxt-backdrop{display:block}
  .mxt[data-state="open"] .mxt-backdrop{opacity:1;visibility:visible}
  .mxt-panel{left:0;right:0;bottom:var(--mxt-kb,0px);width:100%;min-height:0;height:min(88vh,calc(var(--mxt-vvh,100vh) - 10px));height:min(88dvh,calc(var(--mxt-vvh,100dvh) - 10px));border-radius:20px 20px 0 0;border-bottom:0;transform-origin:bottom center;transform:translateY(24px);padding-bottom:env(safe-area-inset-bottom)}
  .mxt-grip{display:block;position:absolute;top:6px;left:50%;width:38px;height:4px;margin-left:-19px;border-radius:4px;background:rgba(255,255,255,.5)}
  .mxt-head{padding-top:16px}
  .mxt-msg{max-width:94%;font-size:14px}
  .mxt-form textarea{font-size:16px} /* evita el zoom automático de iOS */
  .mxt-foot span+span{display:none}
}
/* Pantallas bajas (celular en horizontal, ventanas pequeñas) */
@media (min-width:641px) and (max-height:600px){
  .mxt-panel{min-height:0;bottom:12px;height:calc(100vh - 24px);height:calc(100dvh - 24px)}
  .mxt-chips{padding-top:6px}.mxt-foot{display:none}
}
html.mxt-lock,html.mxt-lock body{overflow:hidden!important;overscroll-behavior:none}

@media (prefers-reduced-motion:reduce){.mxt *{animation:none!important;transition:none!important}}
@keyframes mxtIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@keyframes mxtDot{0%,80%,100%{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}
@media print{.mxt{display:none!important}}