/* ===== Asesor: tema oscuro, degradado verde azulado a azul ===== */
:root{
  --fondo:#07131f; --panel:#0e1d2d; --panel-2:#13283d; --linea:#1f3a56;
  --texto:#f4f7fb; --tenue:#9cb3c9; --suave:#6f8aa5;
  --teal:#00c2a8; --azul:#1577ff; --grad:linear-gradient(135deg,#00c2a8,#1577ff);
  --aviso:#ffb454; --error:#ff8a9b; --ok:#6ef0b0;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Manrope',system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--fondo);color:var(--texto);line-height:1.55;min-height:100vh;-webkit-font-smoothing:antialiased;}
a{color:inherit;}
img,svg{max-width:100%;}
h1,h2,h3,h4{line-height:1.12;letter-spacing:-.02em;}
button{font:inherit;color:inherit;}
:focus-visible{outline:3px solid #57ffe7;outline-offset:2px;border-radius:6px;}
.tenue{color:var(--tenue);} .centro{text-align:center;}
.contenedor{width:100%;max-width:1160px;margin:0 auto;padding:0 1.4rem;}

/* ---------- botones ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;border:none;border-radius:14px;padding:.85em 1.4em;font-weight:700;font-size:.97rem;cursor:pointer;text-decoration:none;transition:transform .2s cubic-bezier(.2,.9,.3,1.3),box-shadow .2s,background .2s,opacity .2s;}
.btn-principal{background:var(--grad);color:#04121c;}
.btn-principal:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,194,168,.35);}
.btn-borde{background:transparent;color:var(--texto);border:1.5px solid var(--linea);}
.btn-borde:hover{border-color:var(--teal);background:rgba(0,194,168,.08);}
.btn:active{transform:scale(.97);}
.btn:disabled{opacity:.6;cursor:wait;transform:none;box-shadow:none;}
.btn-sm{padding:.55em 1em;font-size:.88rem;border-radius:11px;}
.btn-block{width:100%;}

/* ---------- portada ---------- */
.nav-top{position:sticky;top:0;z-index:20;background:rgba(7,19,31,.82);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.05);}
.nav-top .contenedor{display:flex;align-items:center;justify-content:space-between;height:72px;gap:1rem;}
.marca{display:flex;align-items:center;gap:.65rem;font-weight:800;font-size:1.3rem;text-decoration:none;}
.marca-icono{width:38px;height:38px;border-radius:11px;background:var(--grad);display:grid;place-items:center;color:#04121c;font-size:1.05rem;}
.nav-links{display:flex;gap:1.6rem;}
.nav-links a{text-decoration:none;color:var(--tenue);font-weight:600;font-size:.95rem;transition:color .2s;}
.nav-links a:hover{color:var(--texto);}
.nav-acciones{display:flex;gap:.6rem;}

.hero{position:relative;overflow:hidden;padding:4.5rem 0 5rem;background:radial-gradient(900px 480px at 85% -10%,rgba(21,119,255,.28),transparent 60%),radial-gradient(700px 420px at 0% 100%,rgba(0,194,168,.22),transparent 60%);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3.5rem;align-items:center;}
.etiqueta{display:inline-flex;align-items:center;gap:.5rem;background:rgba(0,194,168,.12);color:#57ffe7;border-radius:999px;padding:.45rem 1rem;font-size:.85rem;font-weight:700;margin-bottom:1.3rem;}
.hero h1{font-size:clamp(2.3rem,5.2vw,3.9rem);font-weight:800;margin-bottom:1.1rem;}
.hero p.lead{font-size:1.15rem;color:var(--tenue);max-width:33em;}
.acciones{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:2rem;}
.hero-notas{display:flex;gap:1.6rem;flex-wrap:wrap;margin-top:2rem;color:var(--tenue);font-size:.92rem;font-weight:600;}
.hero-notas i{color:var(--teal);margin-right:.4rem;}

/* sala de ejemplo con contador */
.sala{background:var(--panel);border:1px solid var(--linea);border-radius:26px;box-shadow:0 30px 80px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.02);overflow:hidden;}
.sala-cab{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.3rem;border-bottom:1px solid var(--linea);}
.sala-quien{display:flex;align-items:center;gap:.8rem;}
.avatar{width:42px;height:42px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#04121c;font-weight:800;flex:none;}
.sala-quien strong{display:block;font-size:.97rem;}
.sala-quien span{font-size:.82rem;color:var(--tenue);}
.estado{display:inline-flex;align-items:center;gap:.45rem;border-radius:999px;padding:.35rem .85rem;font-size:.8rem;font-weight:700;background:rgba(110,240,176,.12);color:var(--ok);transition:background .3s,color .3s;}
.estado::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor;}
.estado.pausa{background:rgba(255,180,84,.14);color:var(--aviso);}
.estado.pausa::before{animation:none;}
.estado:not(.pausa)::before{animation:latido 1.6s ease-in-out infinite;}
@keyframes latido{0%,100%{opacity:1}50%{opacity:.35}}
.reloj-zona{padding:1.6rem 1.3rem 1.2rem;text-align:center;background:linear-gradient(180deg,rgba(21,119,255,.1),transparent);}
.reloj{font-variant-numeric:tabular-nums;font-weight:800;font-size:clamp(3rem,7vw,4.4rem);letter-spacing:-.03em;line-height:1;transition:color .3s;}
.reloj.poco{color:var(--aviso);} .reloj.final{color:var(--error);} .reloj.en-pausa{color:var(--tenue);}
.reloj-etq{color:var(--tenue);font-size:.85rem;margin-top:.5rem;font-weight:600;}
.barra-tiempo{height:6px;border-radius:99px;background:var(--panel-2);margin:1.1rem auto 0;max-width:340px;overflow:hidden;}
.barra-tiempo i{display:block;height:100%;width:98%;background:var(--grad);border-radius:99px;transition:width 1s linear;}
.sala-chat{padding:1rem 1.3rem 1.2rem;display:flex;flex-direction:column;gap:.55rem;min-height:250px;}
.burbuja{max-width:84%;padding:.65em .95em;border-radius:16px;font-size:.93rem;animation:entra .35s ease both;}
@keyframes entra{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.burbuja.profe{background:var(--panel-2);align-self:flex-start;border-bottom-left-radius:5px;}
.burbuja.alumno{background:var(--grad);color:#04121c;font-weight:600;align-self:flex-end;border-bottom-right-radius:5px;}
.aviso-sala{align-self:center;font-size:.8rem;color:var(--aviso);background:rgba(255,180,84,.1);border-radius:999px;padding:.3rem .85rem;font-weight:600;animation:entra .35s ease both;}

.seccion{padding:5rem 0;}
.seccion.alt{background:var(--panel);border-block:1px solid rgba(255,255,255,.04);}
.seccion h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:800;margin-bottom:.8rem;}
.seccion .sub{color:var(--tenue);max-width:40em;font-size:1.05rem;margin-bottom:2.6rem;}
.rejilla-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;}
.rejilla-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.2rem;}
.beneficio{background:var(--panel);border:1px solid var(--linea);border-radius:20px;padding:1.6rem;}
.seccion.alt .beneficio{background:var(--fondo);}
.icono{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;font-size:1.3rem;background:rgba(0,194,168,.14);color:#57ffe7;margin-bottom:1.1rem;}
.beneficio h3{font-size:1.15rem;margin-bottom:.5rem;}
.beneficio p{color:var(--tenue);font-size:.96rem;}
.paso-num{width:38px;height:38px;border-radius:50%;background:var(--grad);color:#04121c;font-weight:800;display:grid;place-items:center;margin-bottom:1rem;}
.paquete{text-align:center;padding:2rem 1.4rem;}
.paquete .min{font-size:3rem;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.paquete .u{color:var(--tenue);font-weight:700;margin:.3rem 0 1rem;}
.cta-doble .beneficio{padding:2.2rem;}
.cta-doble h3{font-size:1.5rem;margin-bottom:.6rem;}
.cta-doble p{margin-bottom:1.4rem;}
.pie{border-top:1px solid rgba(255,255,255,.06);padding:2rem 0;color:var(--suave);font-size:.9rem;}
.pie .contenedor{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;}

/* ---------- acceso (login y registro) ---------- */
.acceso{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr;}
.acceso-hero{position:relative;overflow:hidden;background:var(--grad);color:#03111b;padding:3.5rem 3.5rem;display:flex;flex-direction:column;justify-content:center;}
.acceso-hero::before{content:"";position:absolute;width:460px;height:460px;border-radius:50%;background:rgba(255,255,255,.1);top:-200px;right:-140px;}
.acceso-hero::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(3,17,27,.12);bottom:-120px;left:-80px;}
.acceso-hero>*{position:relative;z-index:1;}
.acceso-hero .marca{margin-bottom:2.4rem;color:#03111b;}
.acceso-hero .marca-icono{background:#03111b;color:#57ffe7;}
.acceso-hero h1{font-size:clamp(2rem,4vw,3.1rem);font-weight:800;margin-bottom:1rem;}
.acceso-hero>p{font-size:1.08rem;max-width:30em;font-weight:500;opacity:.9;}
.rasgos{margin-top:2.2rem;display:grid;gap:.9rem;}
.rasgo{display:flex;align-items:center;gap:1rem;background:rgba(255,255,255,.18);backdrop-filter:blur(6px);border-radius:16px;padding:1rem 1.1rem;}
.rasgo i{width:46px;height:46px;border-radius:50%;background:#fff;color:#007f6e;display:grid;place-items:center;font-size:1.15rem;flex:none;}
.rasgo strong{display:block;font-size:1rem;}
.rasgo span{font-size:.9rem;opacity:.85;font-weight:500;}
.acceso-form{display:flex;flex-direction:column;justify-content:center;padding:3rem 3.5rem;max-width:560px;width:100%;margin:0 auto;}
.pestanas{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;margin-bottom:2rem;}
.pestanas a{text-align:center;padding:.9rem;border-radius:13px;background:var(--panel-2);color:var(--tenue);font-weight:700;text-decoration:none;transition:background .2s,color .2s;}
.pestanas a:hover{color:var(--texto);}
.pestanas a.activa{background:var(--grad);color:#04121c;}
.acceso-form h2{font-size:2rem;font-weight:800;margin-bottom:.4rem;}
.acceso-form>p.tenue{margin-bottom:1.6rem;}
.campo{margin-bottom:1.1rem;}
.campo label{display:block;font-size:.88rem;font-weight:700;color:#a9c0d8;margin-bottom:.45rem;}
.campo input{width:100%;padding:.95em 1.05em;border-radius:13px;border:1px solid var(--linea);background:#081521;color:var(--texto);font:inherit;font-size:.98rem;transition:border-color .2s,box-shadow .2s;}
.campo input::placeholder{color:#547089;}
.campo input:focus{outline:none;border-color:var(--teal);box-shadow:0 0 0 3px rgba(0,194,168,.2);}
.campo small{display:block;color:var(--suave);font-size:.8rem;margin-top:.4rem;}
.roles{display:grid;grid-template-columns:1fr 1fr;gap:.7rem;}
.roles button{display:flex;flex-direction:column;align-items:flex-start;gap:.35rem;text-align:left;background:#081521;border:1.5px solid var(--linea);border-radius:14px;padding:1rem;cursor:pointer;transition:border-color .2s,background .2s;}
.roles button i{font-size:1.25rem;color:var(--teal);}
.roles button strong{font-size:.97rem;}
.roles button span{font-size:.8rem;color:var(--tenue);}
.roles button:hover{border-color:#2d5a82;}
.roles button[aria-pressed="true"]{border-color:var(--teal);background:rgba(0,194,168,.1);box-shadow:0 0 0 3px rgba(0,194,168,.15);}
.msg{display:none;margin:.2rem 0 1rem;padding:.85rem 1rem;border-radius:12px;font-size:.92rem;font-weight:600;background:rgba(255,23,68,.14);color:var(--error);}
.msg:not(:empty){display:block;}
.msg.ok{background:rgba(0,200,83,.14);color:var(--ok);}
.volver{margin-top:1.6rem;text-align:center;font-size:.9rem;color:var(--suave);}
.volver a{color:var(--tenue);}

/* ---------- paneles ---------- */
.app{display:grid;grid-template-columns:268px 1fr;min-height:100vh;}
.lateral{position:sticky;top:0;height:100vh;background:var(--panel);border-right:1px solid rgba(255,255,255,.05);padding:1.4rem 1.1rem;display:flex;flex-direction:column;}
.lateral .marca{padding:.2rem .5rem;margin-bottom:1.8rem;}
.menu{display:flex;flex-direction:column;gap:.3rem;flex:1;}
.menu button{display:flex;align-items:center;gap:.85rem;width:100%;text-align:left;background:none;border:none;border-radius:12px;padding:.85rem .9rem;color:var(--tenue);font-weight:600;cursor:pointer;transition:background .2s,color .2s;}
.menu button i{width:20px;text-align:center;}
.menu button:hover{background:var(--panel-2);color:var(--texto);}
.menu button[aria-current="true"]{background:var(--grad);color:#04121c;}
.lateral-pie{border-top:1px solid var(--linea);padding-top:1rem;display:flex;align-items:center;gap:.7rem;}
.lateral-pie .quien{flex:1;min-width:0;}
.lateral-pie strong{display:block;font-size:.92rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.lateral-pie span{font-size:.78rem;color:var(--tenue);}
.btn-salir{background:none;border:1px solid var(--linea);border-radius:10px;color:var(--tenue);width:38px;height:38px;cursor:pointer;transition:border-color .2s,color .2s;}
.btn-salir:hover{border-color:var(--error);color:var(--error);}
.principal{padding:2rem 2.4rem 3rem;min-width:0;}
.sup{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.8rem;}
.sup h1{font-size:1.7rem;font-weight:800;}
.aviso{display:flex;gap:.9rem;align-items:flex-start;background:rgba(255,180,84,.1);border:1px solid rgba(255,180,84,.35);color:#ffd9a3;border-radius:16px;padding:1rem 1.2rem;margin-bottom:1.5rem;}
.aviso i{margin-top:.2rem;color:var(--aviso);}
.aviso[hidden]{display:none;}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:1.6rem;}
.stat{background:var(--panel);border:1px solid var(--linea);border-radius:18px;padding:1.2rem 1.3rem;}
.stat .icono{width:42px;height:42px;font-size:1.05rem;margin-bottom:.9rem;border-radius:12px;}
.stat .valor{font-size:1.9rem;font-weight:800;line-height:1.1;}
.stat .etq{color:var(--tenue);font-size:.88rem;font-weight:600;margin-top:.2rem;}
.caja{background:var(--panel);border:1px solid var(--linea);border-radius:20px;padding:1.5rem;margin-bottom:1.2rem;}
.caja h2{font-size:1.1rem;margin-bottom:.4rem;}
.caja>p{color:var(--tenue);font-size:.95rem;}
.sec[hidden]{display:none;}
.vacio{text-align:center;padding:2.6rem 1rem;}
.vacio i{font-size:1.9rem;color:var(--teal);margin-bottom:1rem;display:block;}
.vacio h3{font-size:1.1rem;margin-bottom:.4rem;}
.vacio p{color:var(--tenue);max-width:30em;margin:0 auto;font-size:.95rem;}
.pasos-lista{list-style:none;display:grid;gap:.8rem;margin-top:1.1rem;}
.pasos-lista li{display:flex;gap:.9rem;align-items:flex-start;background:var(--fondo);border-radius:14px;padding:.95rem 1.05rem;}
.pasos-lista .paso-num{width:30px;height:30px;font-size:.9rem;margin:0;flex:none;}
.pasos-lista strong{display:block;}
.pasos-lista span{color:var(--tenue);font-size:.9rem;}
.tabla-caja{overflow-x:auto;}
table{width:100%;border-collapse:collapse;font-size:.93rem;}
th{text-align:left;color:var(--tenue);font-weight:700;font-size:.82rem;padding:.7rem .8rem;border-bottom:1px solid var(--linea);}
td{padding:.85rem .8rem;border-bottom:1px solid rgba(255,255,255,.05);vertical-align:middle;}
tr:last-child td{border-bottom:none;}
.chip{display:inline-block;border-radius:999px;padding:.25rem .75rem;font-size:.78rem;font-weight:700;}
.chip.ok{background:rgba(110,240,176,.14);color:var(--ok);}
.chip.espera{background:rgba(255,180,84,.14);color:var(--aviso);}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .hero-grid,.acceso{grid-template-columns:1fr;}
  .acceso-hero{padding:2.4rem 1.6rem;}
  .acceso-form{padding:2rem 1.4rem 3rem;}
  .nav-links{display:none;}
  .rejilla-3{grid-template-columns:1fr;} .rejilla-2{grid-template-columns:1fr;}
  .app{grid-template-columns:1fr;}
  .lateral{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;gap:.8rem;padding:.9rem 1rem;}
  .lateral .marca{margin:0;}
  .menu{flex-direction:row;order:3;width:100%;overflow-x:auto;flex:none;padding-bottom:.2rem;}
  .menu button{width:auto;white-space:nowrap;padding:.65rem .9rem;}
  .lateral-pie{border:none;padding:0;margin-left:auto;}
  .lateral-pie .quien{display:none;}
  .principal{padding:1.4rem 1rem 2.5rem;}
}
@media(max-width:520px){
  .nav-acciones .btn-borde{display:none;}
  .roles{grid-template-columns:1fr;}
  .hero{padding:2.6rem 0 3rem;}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* ajustes finos */
.estado{white-space:nowrap;flex:none;}
.tabla-caja>p{margin-bottom:1.1rem;}