/* ══════ VARIABLES & RESET ══════ */
:root{
  --papel:#F7F4EC;          /* papel de algodón */
  --papel-2:#FDFBF5;
  --tinta:#141D16;          /* tinta de imprenta */
  --tinta-suave:#57635A;
  --tinta-tenue:#98A099;
  --bosque:#0C1E14;
  --oro:#B3924E;            /* pan de oro */
  --oro-claro:#D3B678;
  --oro-tenue:rgba(179,146,78,.35);
  --granate:#6E2C1E;        /* oxblood académico */
  --verde:#2E6B4F;
  --filo:#DDD6C4;           /* hairline */
  --ease:cubic-bezier(.22,.9,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
body{
  font-family:'Outfit',sans-serif;background:var(--papel);color:var(--tinta);
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:1280px;margin:0 auto;padding:64px 56px 120px}
svg{flex-shrink:0}
 
/* ══════ TIPOS ══════ */
.serif{font-family:'Fraunces',serif}
.caps{font-size:10.5px;letter-spacing:3px;text-transform:uppercase;font-weight:600}
.caps.oro{color:var(--oro)}
.caps.tenue{color:var(--tinta-tenue)}
 
/* ══════ FRONTISPICIO ══════ */
.frontis{text-align:center;margin-bottom:20px}
.frontis .sello{
  width:54px;height:54px;margin:0 auto 22px;border:1px solid var(--oro);
  border-radius:50%;display:grid;place-items:center;position:relative;
  font-family:'Fraunces',serif;font-size:20px;color:var(--oro);
}
.frontis .sello::after{
  content:"";position:absolute;inset:4px;border:1px solid var(--oro-tenue);border-radius:50%;
}
.frontis .caps{margin-bottom:16px;display:block}
.frontis h1{
  font-family:'Fraunces',serif;font-weight:300;font-size:clamp(44px,5.5vw,72px);
  line-height:1.02;letter-spacing:-.5px;
}
.frontis h1 em{font-style:italic;font-weight:400}
.frontis .lema{
  font-family:'Fraunces',serif;font-style:italic;font-weight:300;
  font-size:16px;color:var(--tinta-suave);margin-top:18px;
}
.regla{display:flex;align-items:center;gap:18px;margin:38px 0 0;justify-content:center}
.regla::before,.regla::after{content:"";height:1px;width:180px;background:linear-gradient(90deg,transparent,var(--filo))}
.regla::after{background:linear-gradient(90deg,var(--filo),transparent)}
.regla .rombo{width:6px;height:6px;background:var(--oro);transform:rotate(45deg)}
 
/* ══════ LÍNEA DE REGISTRO (stats) ══════ */
.registro{
  display:flex;justify-content:center;gap:0;margin:36px 0 72px;flex-wrap:wrap;
}
.reg-item{padding:0 44px;text-align:center;position:relative}
.reg-item+.reg-item::before{
  content:"";position:absolute;left:0;top:15%;height:70%;width:1px;background:var(--filo);
}
.reg-item .rv{font-family:'Fraunces',serif;font-size:32px;font-weight:400;line-height:1}
.reg-item .rv small{font-size:17px;color:var(--tinta-suave)}
.reg-item .caps{display:block;margin-top:8px}
 
/* ══════ ÍNDICE DE CAPÍTULOS (tabs) ══════ */
.indice{
  display:flex;justify-content:center;gap:0;margin-bottom:80px;
  border-top:1px solid var(--filo);border-bottom:1px solid var(--filo);
}
.cap-tab{
  flex:1;max-width:360px;border:none;background:transparent;font-family:inherit;
  padding:26px 30px;cursor:pointer;text-align:center;position:relative;
  transition:background .25s var(--ease);
}
.cap-tab+.cap-tab::before{
  content:"";position:absolute;left:0;top:20%;height:60%;width:1px;background:var(--filo);
}
.cap-tab .cap-num{
  font-family:'Fraunces',serif;font-style:italic;font-weight:300;font-size:15px;
  color:var(--oro);display:block;margin-bottom:7px;
}
.cap-tab b{
  font-family:'Fraunces',serif;font-size:19px;font-weight:400;color:var(--tinta);
  display:block;transition:color .2s;
}
.cap-tab span{font-size:12px;color:var(--tinta-tenue);font-weight:300;display:block;margin-top:5px;letter-spacing:.3px}
.cap-tab::after{
  content:"";position:absolute;left:50%;bottom:-1px;transform:translateX(-50%);
  width:0;height:2px;background:var(--oro);transition:width .35s var(--ease);
}
.cap-tab.on::after{width:60%}
.cap-tab:hover b{color:var(--granate)}
.cap-tab.on b{color:var(--tinta)}
 
/* ══════ PANES ══════ */
.pane{display:none;animation:paneIn .5s var(--ease)}
.pane.on{display:block}
@keyframes paneIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
 
/* cabecera de capítulo */
.cap-head{display:flex;align-items:baseline;gap:28px;margin-bottom:14px}
.cap-head .num{
  font-family:'Fraunces',serif;font-style:italic;font-weight:300;font-size:64px;
  color:transparent;-webkit-text-stroke:1px var(--oro);line-height:.9;
}
.cap-head h2{font-family:'Fraunces',serif;font-weight:400;font-size:34px}
.cap-head .acc{margin-left:auto}
.cap-desc{
  font-size:14px;color:var(--tinta-suave);font-weight:300;line-height:1.7;
  max-width:640px;margin-bottom:46px;
}
.btn-linea{
  border:1px solid var(--tinta);background:transparent;color:var(--tinta);
  font-family:'Outfit',sans-serif;font-size:11.5px;font-weight:600;letter-spacing:2.5px;
  text-transform:uppercase;padding:13px 26px;cursor:pointer;border-radius:0;
  transition:all .25s var(--ease);
}
.btn-linea:hover{background:var(--tinta);color:var(--papel)}
.btn-oro{
  border:1px solid var(--oro);background:var(--oro);color:#fff;
  font-family:'Outfit',sans-serif;font-size:11.5px;font-weight:600;letter-spacing:2.5px;
  text-transform:uppercase;padding:13px 26px;cursor:pointer;border-radius:0;
  transition:all .25s var(--ease);
}
.btn-oro:hover{background:var(--tinta);border-color:var(--tinta)}
 
/* ══════ I · BIBLIOTECA: portadas de libro ══════ */
.libros{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:26px}
.libro{
  background:var(--papel-2);border:1px solid var(--filo);cursor:pointer;
  transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;
  display:flex;flex-direction:column;
}
.libro:hover{
  transform:translateY(-5px);border-color:var(--oro-tenue);
  box-shadow:0 30px 50px -24px rgba(20,29,22,.25);
}
.portada{
  margin:10px;border:1px solid var(--oro-tenue);padding:36px 26px 30px;
  text-align:center;position:relative;background:var(--bosque);color:#EDE7D6;
  min-height:210px;display:flex;flex-direction:column;justify-content:center;
}
.portada::after{
  content:"";position:absolute;inset:7px;border:1px solid rgba(211,182,120,.22);pointer-events:none;
}
.portada .caps{color:var(--oro-claro);display:block;margin-bottom:16px}
.portada h3{
  font-family:'Fraunces',serif;font-weight:400;font-size:23px;line-height:1.22;color:#F3ECD9;
}
.portada .orn{
  width:5px;height:5px;background:var(--oro);transform:rotate(45deg);margin:18px auto 0;
}
.libro-ficha{padding:20px 26px 24px;display:flex;flex-direction:column;gap:13px;flex:1}
.libro-ficha .desc{font-size:13px;font-weight:300;color:var(--tinta-suave);line-height:1.65}
.ficha-linea{
  display:flex;justify-content:space-between;font-size:12px;color:var(--tinta-suave);
  padding:9px 0;border-bottom:1px solid #EDE8DA;
}
.ficha-linea:first-of-type{border-top:1px solid #EDE8DA}
.ficha-linea .fk{color:var(--tinta-tenue)}
.libro-pie{display:flex;align-items:baseline;justify-content:space-between;margin-top:auto;padding-top:14px}
.libro-precio{font-family:'Fraunces',serif;font-size:22px}
.libro-precio.free{font-size:15px;font-style:italic;color:var(--verde)}
.edo{font-size:10px;letter-spacing:2px;text-transform:uppercase;font-weight:600}
.edo.pub{color:var(--verde)}
.edo.borr{color:var(--granate)}
.libro.nuevo{
  border-style:dashed;background:transparent;align-items:center;justify-content:center;
  min-height:380px;gap:14px;color:var(--tinta-tenue);text-align:center;padding:30px;
}
.libro.nuevo:hover{border-color:var(--oro);color:var(--oro);box-shadow:none;transform:none}
.libro.nuevo .serif{font-size:18px;font-style:italic}
.libro.nuevo small{font-size:12px;font-weight:300;line-height:1.6;max-width:210px}
 
/* ══════ II · PLÁTICAS ══════ */
.catedra{
  background:var(--bosque);color:#EDE7D6;padding:0;margin-bottom:60px;position:relative;
}
.catedra-inner{
  border:1px solid rgba(211,182,120,.3);margin:10px;padding:40px 46px;
  display:flex;gap:40px;align-items:center;flex-wrap:wrap;position:relative;
}
.catedra-inner::after{content:"";position:absolute;inset:7px;border:1px solid rgba(211,182,120,.14);pointer-events:none}
.catedra .caps{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.live-dot{width:7px;height:7px;border-radius:50%;background:#C4573D;animation:liveP 1.8s ease-in-out infinite}
@keyframes liveP{0%,100%{box-shadow:0 0 0 0 rgba(196,87,61,.5)}50%{box-shadow:0 0 0 7px rgba(196,87,61,0)}}
.catedra h3{
  font-family:'Fraunces',serif;font-weight:300;font-size:34px;line-height:1.15;
  max-width:560px;color:#F3ECD9;
}
.catedra h3 em{font-style:italic}
.catedra-meta{margin-top:22px;font-size:13px;color:rgba(237,231,214,.7);font-weight:300;line-height:2}
.catedra-meta b{color:var(--oro-claro);font-weight:500}
.catedra-cta{margin-left:auto;text-align:center;position:relative;z-index:2;padding:0 10px}
.catedra-cta .precio{font-family:'Fraunces',serif;font-size:44px;font-weight:300;color:var(--oro-claro)}
.catedra-cta .caps{justify-content:center;margin:2px 0 18px}
.catedra-cta .sold{font-size:12px;color:rgba(237,231,214,.5);margin-top:12px;display:block}
.btn-marfil{
  border:1px solid var(--oro-claro);background:transparent;color:var(--oro-claro);
  font-family:'Outfit',sans-serif;font-size:11.5px;font-weight:600;letter-spacing:2.5px;
  text-transform:uppercase;padding:14px 30px;cursor:pointer;
  transition:all .25s var(--ease);
}
.btn-marfil:hover{background:var(--oro-claro);color:var(--bosque)}
 
/* videoteca como archivo de conferencias */
.conf-lista{border-top:1px solid var(--filo)}
.conf{
  display:flex;align-items:center;gap:30px;padding:26px 8px;
  border-bottom:1px solid var(--filo);cursor:pointer;
  transition:background .2s,padding .25s var(--ease);
}
.conf:hover{background:var(--papel-2);padding-left:18px}
.conf .c-num{
  font-family:'Fraunces',serif;font-style:italic;font-weight:300;font-size:17px;
  color:var(--tinta-tenue);width:34px;flex-shrink:0;
}
.conf .c-play{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--tinta);flex-shrink:0;
  display:grid;place-items:center;color:var(--tinta);transition:all .25s var(--ease);
}
.conf:hover .c-play{background:var(--tinta);color:var(--papel)}
.conf .c-info{flex:1;min-width:0}
.conf .c-info b{font-family:'Fraunces',serif;font-size:19px;font-weight:400;display:block;line-height:1.25}
.conf .c-info span{font-size:12.5px;color:var(--tinta-tenue);font-weight:300;display:block;margin-top:5px}
.conf .c-info span b{font-family:'Outfit',sans-serif;font-size:12.5px;color:var(--tinta-suave);font-weight:500;display:inline}
.conf .c-tema{width:150px;flex-shrink:0}
.conf .c-dur{width:70px;text-align:right;font-size:12.5px;color:var(--tinta-tenue);flex-shrink:0}
.conf .c-acceso{width:110px;text-align:right;flex-shrink:0}
.conf .c-acceso .caps{display:block}
.conf .c-acceso .serif{font-size:16px;margin-top:2px;display:block}
.acceso-libre{color:var(--verde)}
.acceso-pago{color:var(--oro)}
 
/* ══════ III · CLASES PROGRAMADAS ══════ */
.programa{
  border:1px solid var(--filo);background:var(--papel-2);margin-bottom:28px;
  transition:border-color .25s,box-shadow .3s;
}
.programa:hover{border-color:var(--oro-tenue);box-shadow:0 24px 44px -26px rgba(20,29,22,.2)}
.prog-grid{display:flex;gap:0;flex-wrap:wrap}
.prog-fecha{
  width:150px;flex-shrink:0;border-right:1px solid var(--filo);
  display:flex;flex-direction:column;justify-content:center;text-align:center;padding:34px 20px;
}
.prog-fecha .dia{font-family:'Fraunces',serif;font-weight:300;font-size:52px;line-height:1}
.prog-fecha .caps{display:block;margin-bottom:10px}
.prog-fecha .rango{font-size:11.5px;color:var(--tinta-tenue);margin-top:10px;font-style:italic;font-family:'Fraunces',serif}
.prog-cuerpo{flex:1;min-width:300px;padding:32px 38px}
.prog-cuerpo h3{font-family:'Fraunces',serif;font-weight:400;font-size:26px;line-height:1.2}
.prog-cuerpo .sub{font-family:'Fraunces',serif;font-style:italic;font-size:14px;color:var(--tinta-suave);margin-top:4px}
.prog-cuerpo .desc{font-size:13.5px;color:var(--tinta-suave);font-weight:300;line-height:1.7;margin-top:14px;max-width:520px}
.temario{display:flex;margin-top:24px;border-top:1px solid var(--filo)}
.tema-col{flex:1;padding:14px 18px 2px 0}
.tema-col+.tema-col{border-left:1px solid var(--filo);padding-left:18px}
.tema-col .caps{display:block;margin-bottom:4px}
.tema-col .serif{font-size:15px}
.tema-col.now .caps{color:var(--oro)}
.horario-linea{margin-top:20px;font-size:13px;color:var(--tinta-suave)}
.horario-linea b{font-weight:600;color:var(--tinta)}
.prog-lado{
  width:240px;flex-shrink:0;border-left:1px solid var(--filo);
  padding:34px 32px;display:flex;flex-direction:column;justify-content:center;gap:16px;
}
.prog-lado .precio{font-family:'Fraunces',serif;font-weight:300;font-size:36px}
.prog-lado .precio small{font-size:12px;font-family:'Outfit',sans-serif;color:var(--tinta-tenue);display:block;margin-top:4px;font-weight:400}
.matricula{font-size:12px;color:var(--tinta-suave)}
.matricula .m-bar{height:3px;background:#E8E2D2;margin:8px 0 6px;position:relative}
.matricula .m-bar i{position:absolute;left:0;top:0;bottom:0;background:var(--oro)}
@media(max-width:1080px){
  .wrap{padding:40px 24px 80px}
  .indice{flex-direction:column}
  .cap-tab+.cap-tab::before{display:none}
  .reg-item{padding:0 22px}
  .prog-fecha{width:100%;border-right:none;border-bottom:1px solid var(--filo)}
  .prog-lado{width:100%;border-left:none;border-top:1px solid var(--filo)}
  .conf{flex-wrap:wrap;gap:14px}
  .conf .c-tema,.conf .c-dur,.conf .c-acceso{width:auto;text-align:left}
  .catedra-cta{margin-left:0}
}
@media(max-width:768px){
  .wrap { padding: 32px 16px 64px; }
  .frontis h1 { font-size: clamp(36px, 8vw, 44px); }
  .reg-item { padding: 0 16px; }
  .prog-cuerpo { padding: 24px 20px; min-width: 100%; }
  .prog-lado { padding: 24px 20px; }
  .libros { grid-template-columns: 1fr; }
}

/* ─── ESTILOS DEL GATE DE INICIO DE SESIÓN ─── */
.auth-gate-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at center, #10243b 0%, #07131f 100%);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  transition: opacity 0.4s ease;
  overflow-y: auto;
}
.auth-box {
  background: rgba(13, 27, 42, 0.95);
  border: 1px solid rgba(212, 175, 55, 0.4);
  box-shadow: 0 25px 60px rgba(0,0,0,0.8), 0 0 40px rgba(212, 175, 55, 0.15);
  border-radius: 16px;
  max-width: 440px;
  width: 100%;
  padding: 40px 34px;
  text-align: center;
  color: #fff;
  font-family: 'Outfit', sans-serif;
}
.auth-logo-wrap { margin-bottom: 20px; }
.auth-logo-img { max-height: 90px; width: auto; object-fit: contain; filter: drop-shadow(0 4px 12px rgba(212,175,55,0.3)); }
.auth-title { font-family: 'Fraunces', serif; font-size: 26px; color: #fff; margin: 12px 0 8px; font-weight: 500; }
.auth-sub { font-size: 13.5px; color: #a4b4c4; line-height: 1.5; margin-bottom: 26px; }
.auth-form .input-group { text-align: left; margin-bottom: 18px; }
.auth-form label { display: block; font-size: 12px; color: #d4af37; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px; font-weight: 600; }
.auth-form input[type="email"],
.auth-form input[type="password"] {
  width: 100%;
  background: #08121a;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  padding: 12px 16px;
  color: #fff;
  font-size: 14.5px;
  transition: all 0.3s ease;
  box-sizing: border-box;
}
.auth-form input:focus {
  outline: none;
  border-color: #d4af37;
  box-shadow: 0 0 10px rgba(212,175,55,0.25);
}
.auth-error {
  background: rgba(220, 38, 38, 0.15);
  border: 1px solid rgba(220, 38, 38, 0.4);
  color: #fca5a5;
  padding: 10px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
  line-height: 1.4;
}
.auth-options { font-size: 13px; color: #a4b4c4; text-align: left; margin-bottom: 24px; }
.btn-auth-submit {
  width: 100%;
  background: linear-gradient(135deg, #e5c365, #b8860b);
  color: #07131f;
  border: none;
  padding: 14px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(212,175,55,0.3);
  transition: all 0.3s ease;
}
.btn-auth-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(212,175,55,0.5);
  background: linear-gradient(135deg, #f3d47d, #c99818);
}
.auth-footer-help {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
  color: #7b8e9f;
  line-height: 1.6;
}
.auth-footer-help a {
  color: #d4af37;
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.3s ease;
}
.auth-footer-help a:hover { opacity: 0.8; text-decoration: underline; }
.auth-user-badge {
  background: rgba(13, 27, 42, 0.9);
  border: 1px solid rgba(212, 175, 55, 0.3);
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  color: #e2e8f0;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}