:root{
  --bg:#070b1a; --bg2:#0b1130;
  --ink:#eef2ff; --ink2:#c9d1f0; --mu:#9aa5cf; --soft:#6f7aa6;
  --ac:#8fb3ff; --ac2:#c4a7ff; --ok:#7ee2b8; --oro:#ffc53d;
  --vidrio:rgba(255,255,255,.055); --vidrio2:rgba(255,255,255,.09);
  --borde:rgba(255,255,255,.12); --borde2:rgba(255,255,255,.2);
  --r:22px; --r2:16px;
  --display:"Plus Jakarta Sans",Inter,system-ui,sans-serif;
  --texto:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --sombra:0 1px 0 rgba(255,255,255,.08) inset,0 20px 50px -20px rgba(0,0,0,.6);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:var(--texto);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
body{overflow-x:hidden}
[hidden]{display:none!important}
a{color:var(--ac)}
button{font:inherit;color:inherit;cursor:pointer}
svg{width:20px;height:20px;flex:none}
.mu{color:var(--mu)}

/* aurora de fondo */
.aurora{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.aurora i{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;animation:flota 22s ease-in-out infinite alternate}
.aurora i:nth-child(1){width:60vmax;height:60vmax;left:-20vmax;top:-25vmax;background:radial-gradient(circle,#3b5bdb 0,transparent 65%)}
.aurora i:nth-child(2){width:55vmax;height:55vmax;right:-25vmax;top:10vh;background:radial-gradient(circle,#7c4dff 0,transparent 65%);animation-delay:-7s}
.aurora i:nth-child(3){width:50vmax;height:50vmax;left:10vw;bottom:-30vmax;background:radial-gradient(circle,#1fb6a6 0,transparent 65%);opacity:.3;animation-delay:-14s}
@keyframes flota{to{transform:translate3d(6vmax,4vmax,0) scale(1.08)}}
@media (prefers-reduced-motion:reduce){.aurora i{animation:none}}

/* vidrio liquido */
.vidrio{background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.035) 45%,rgba(255,255,255,.02));
  border:1px solid var(--borde);box-shadow:var(--sombra);
  -webkit-backdrop-filter:blur(22px) saturate(170%);backdrop-filter:blur(22px) saturate(170%)}

.vista{position:relative;z-index:1}
.marca{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:600;font-size:17px;letter-spacing:-.01em}
.marca b{font-weight:800}
.logo{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;font-family:var(--display);font-weight:800;color:#0b1030;
  background:linear-gradient(135deg,var(--ac),var(--ac2));box-shadow:0 6px 18px -6px rgba(143,179,255,.8),inset 0 1px 0 rgba(255,255,255,.6)}
.degrade{background:linear-gradient(90deg,var(--ac),var(--ac2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:14px;padding:15px 20px;font-weight:700;font-size:16px;text-decoration:none;transition:transform .15s,box-shadow .2s,filter .2s}
.btn:active{transform:scale(.98)}
.btn-luz{width:100%;color:#0b1030;background:linear-gradient(135deg,#b9ceff,#d8c8ff);box-shadow:0 10px 30px -10px rgba(160,180,255,.9),inset 0 1px 0 rgba(255,255,255,.7)}
.btn-luz:hover{filter:brightness(1.05)}
.btn-vidrio{color:var(--ink);background:var(--vidrio2);border:1px solid var(--borde2)}
.btn[disabled]{opacity:.6;pointer-events:none}

/* ENTRADA */
.entrar{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:24px 16px}
.entrar-caja{width:100%;max-width:440px;border-radius:28px;padding:30px 24px 26px}
.entrar h1{font-family:var(--display);font-size:clamp(30px,8vw,38px);line-height:1.08;letter-spacing:-.03em;margin:26px 0 10px}
.entrar .mu{margin:0 0 22px}
.campo{display:flex;align-items:center;gap:10px;padding:0 16px;border-radius:14px;background:rgba(5,8,22,.55);border:1px solid var(--borde);margin-bottom:12px;color:var(--mu);transition:border-color .2s,box-shadow .2s}
.campo:focus-within{border-color:var(--ac);box-shadow:0 0 0 4px rgba(143,179,255,.18)}
.campo input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font-size:16px;padding:16px 0}
.campo input::placeholder{color:var(--soft)}
.mensaje{margin:14px 0 0;padding:12px 14px;border-radius:12px;background:rgba(255,120,120,.1);border:1px solid rgba(255,140,140,.25);color:#ffd0d0;font-size:14px}
.mensaje a{color:#fff;font-weight:600}
.garantias{list-style:none;margin:22px 0 0;padding:18px 0 0;border-top:1px solid var(--borde);display:grid;gap:8px;font-size:14px;color:var(--ink2)}
.garantias li{display:flex;gap:10px;align-items:center}
.garantias svg{width:18px;height:18px;color:var(--ok)}

/* BARRA */
.barra{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;padding-top:max(12px,env(safe-area-inset-top));border-width:0 0 1px;border-radius:0}
.cuenta{width:38px;height:38px;border-radius:50%;border:1px solid var(--borde2);background:linear-gradient(135deg,rgba(143,179,255,.35),rgba(196,167,255,.35));font-weight:700}
.menu{position:absolute;right:16px;top:calc(100% + 8px);min-width:230px;border-radius:16px;padding:8px;display:grid}
.menu p{margin:6px 10px 8px;font-size:13px;word-break:break-all}
.menu a,.menu button{display:block;text-align:left;padding:11px 10px;border-radius:10px;border:0;background:none;color:var(--ink);text-decoration:none;font-size:15px}
.menu a:hover,.menu button:hover{background:var(--vidrio2)}

.contenedor{max-width:1080px;margin:0 auto;padding:22px 16px 40px}
.saludo{margin:4px 0 22px}
.saludo p{margin:0}
.saludo h1{font-family:var(--display);font-size:32px;letter-spacing:-.03em;margin:2px 0 0}

/* CURSO */
.curso{--ac-c:var(--ac);margin-bottom:34px}
.curso-cab{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:14px}
.curso-cab h2{font-family:var(--display);font-size:22px;letter-spacing:-.02em;margin:0}
.curso-cab p{margin:2px 0 0;font-size:14px}
.avance{min-width:170px;flex:1;max-width:260px}
.avance span{display:block;font-size:12.5px;color:var(--mu);margin-bottom:6px;text-align:right}
.avance div{height:6px;border-radius:9px;background:rgba(255,255,255,.08);overflow:hidden}
.avance div i{display:block;height:100%;border-radius:9px;background:linear-gradient(90deg,var(--ac-c),#fff);box-shadow:0 0 12px var(--ac-c)}

.grilla{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
@media (min-width:640px){.grilla{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}}
@media (min-width:960px){.grilla{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* TARJETA */
.tarjeta{position:relative;display:flex;flex-direction:column;text-align:left;border-radius:var(--r);padding:0;overflow:hidden;border:1px solid var(--borde);background:var(--vidrio);
  -webkit-backdrop-filter:blur(16px) saturate(160%);backdrop-filter:blur(16px) saturate(160%);box-shadow:var(--sombra);transition:transform .2s,border-color .2s,box-shadow .2s}
.tarjeta:hover{transform:translateY(-3px);border-color:var(--borde2);box-shadow:0 1px 0 rgba(255,255,255,.1) inset,0 26px 50px -22px rgba(0,0,0,.75)}
.tapa{position:relative;aspect-ratio:1/1;overflow:hidden;background:#0d1330}
.tapa img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s}
.tarjeta:hover .tapa img{transform:scale(1.04)}
.tapa:after{content:"";position:absolute;inset:auto 0 0;height:45%;background:linear-gradient(transparent,rgba(7,11,26,.85))}
.cuerpo{padding:12px 14px 14px;display:flex;flex-direction:column;gap:4px;flex:1}
.cuerpo h3{font-family:var(--display);font-size:15px;line-height:1.25;letter-spacing:-.01em;margin:0}
.cuerpo p{margin:0;font-size:12.5px;color:var(--mu);line-height:1.35}
.pie-t{margin-top:auto;padding-top:10px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;font-size:13px;font-weight:700}
.abrir{color:var(--ok);display:flex;align-items:center;gap:6px}
.abrir svg{width:16px;height:16px}
.sello{position:absolute;z-index:2;bottom:10px;left:10px;padding:5px 10px;border-radius:99px;font-size:11px;font-weight:700;letter-spacing:.02em;
  background:rgba(7,11,26,.55);border:1px solid var(--borde2);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.sello.ok{color:var(--ok)}

/* bloqueada */
.tarjeta.bloq .tapa img,.tarjeta.bloq .tapa .tapa-css{filter:grayscale(.85) brightness(.45) blur(1px)}
.candado{position:absolute;z-index:2;inset:0;display:grid;place-items:center}
.candado span{display:grid;place-items:center;width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid var(--borde2);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 10px 30px -8px rgba(0,0,0,.7),inset 0 1px 0 rgba(255,255,255,.3)}
.candado svg{width:24px;height:24px}
.precio{color:var(--ink);font-family:var(--display);font-weight:800;white-space:nowrap}
.desbloquear{white-space:nowrap;padding:7px 10px;border-radius:10px;font-size:12.5px;color:#0b1030;background:linear-gradient(135deg,var(--ac-c),#fff);box-shadow:0 6px 16px -8px var(--ac-c)}

/* tarjeta principal */
.tarjeta.prin{grid-column:1/-1;flex-direction:row;align-items:stretch}
.tarjeta.prin .tapa{width:42%;max-width:280px;flex:none;aspect-ratio:4/5;align-self:center}
.tarjeta.prin .tapa:after{display:none}
.tarjeta.prin .cuerpo{padding:18px;justify-content:center;gap:8px}
.tarjeta.prin h3{font-size:clamp(18px,4.6vw,24px)}
.tarjeta.prin p{font-size:14px}
.tarjeta.prin .pie-t{margin-top:8px}
.tarjeta.prin .btn{padding:11px 16px;font-size:14px;width:auto;align-self:flex-start;color:#0b1030;background:linear-gradient(135deg,var(--ac-c),#fff)}
@media (max-width:420px){.tarjeta.prin .tapa{width:40%}.tarjeta.prin .cuerpo{padding:14px}}

/* portada dibujada */
.tapa-css{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;padding:18px;text-align:center;gap:8px}
.tapa-css b{font-family:var(--display);font-size:clamp(18px,4.8vw,24px);line-height:1.08;letter-spacing:-.02em}
.tapa-css small{font-size:12px;letter-spacing:.14em;text-transform:uppercase;opacity:.85}
.tapa-css.oro{background:radial-gradient(80% 60% at 50% 30%,rgba(255,197,61,.55),transparent 70%),linear-gradient(180deg,#14100a,#05070f);color:#ffe7a8}
.tapa-css.oro b{background:linear-gradient(180deg,#fff3c4,#ffc53d 60%,#b8860b);-webkit-background-clip:text;background-clip:text;color:transparent}
.tapa-css.lavanda{background:radial-gradient(80% 60% at 50% 30%,rgba(196,167,255,.6),transparent 70%),linear-gradient(180deg,#1b1240,#0a0820);color:#efe6ff}
.tapa-css:before{content:"";position:absolute;inset:12px;border:1px solid rgba(255,255,255,.18);border-radius:14px}

/* VISOR */
.visor{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;background:var(--bg)}
.visor-barra{display:flex;align-items:center;gap:10px;padding:10px 12px;padding-top:max(10px,env(safe-area-inset-top));border-width:0 0 1px;border-radius:0}
.visor-barra p{flex:1;margin:0;font-weight:700;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.volver,.pestana{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;border:1px solid var(--borde);background:var(--vidrio2);color:var(--ink)}
.visor iframe{flex:1;width:100%;border:0;background:#fff}

/* HOJA */
.hoja{position:fixed;inset:0;z-index:60;display:flex;align-items:flex-end;justify-content:center}
.hoja-fondo{position:absolute;inset:0;background:rgba(3,5,14,.6);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:aparece .2s}
.hoja-caja{position:relative;width:100%;max-width:560px;max-height:88vh;overflow:auto;border-radius:26px 26px 0 0;padding:12px 18px calc(22px + env(safe-area-inset-bottom));background:linear-gradient(180deg,rgba(22,29,62,.92),rgba(10,14,34,.96));animation:sube .28s cubic-bezier(.2,.9,.3,1)}
@media (min-width:640px){.hoja{align-items:center}.hoja-caja{border-radius:26px}}
.asa{display:block;width:42px;height:5px;border-radius:9px;background:rgba(255,255,255,.25);margin:0 auto 14px;cursor:pointer}
.hoja h2{font-family:var(--display);font-size:22px;letter-spacing:-.02em;margin:0 0 6px}
.hoja .mu{margin:0 0 16px;font-size:14px}
.archivo{display:flex;align-items:center;gap:12px;padding:12px;border-radius:14px;background:var(--vidrio);border:1px solid var(--borde);margin-bottom:10px}
.archivo .ico{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,rgba(143,179,255,.25),rgba(196,167,255,.25));flex:none}
.archivo .t{flex:1;min-width:0;font-weight:600;font-size:14px;line-height:1.3}
.archivo .acc{display:flex;gap:6px}
.archivo a{display:grid;place-items:center;height:38px;padding:0 12px;border-radius:10px;font-size:13px;font-weight:700;text-decoration:none;color:var(--ink);background:var(--vidrio2);border:1px solid var(--borde)}
.archivo a.dl{width:38px;padding:0}
.aviso{padding:12px 14px;border-radius:12px;background:rgba(255,197,61,.08);border:1px solid rgba(255,197,61,.25);color:#ffe6a6;font-size:13.5px;margin-top:6px}
.marcha{display:grid;place-items:center;width:64px;height:64px;border-radius:20px;margin:6px 0 14px;background:linear-gradient(135deg,rgba(126,226,184,.3),rgba(143,179,255,.3));color:var(--ok)}
.marcha svg{width:30px;height:30px}

.pie{text-align:center;font-size:13px;margin-top:30px}

.tostada{position:fixed;z-index:80;left:50%;bottom:calc(20px + env(safe-area-inset-bottom));transform:translateX(-50%);padding:12px 18px;border-radius:14px;background:rgba(20,26,56,.95);border:1px solid var(--borde2);font-size:14px;box-shadow:0 14px 40px -10px #000}

/* carga */
.esqueleto{height:220px;border-radius:var(--r);background:linear-gradient(100deg,rgba(255,255,255,.04) 30%,rgba(255,255,255,.09) 50%,rgba(255,255,255,.04) 70%) 0 0/300% 100%;animation:brillo 1.4s infinite}
@keyframes brillo{to{background-position:-150% 0}}
@keyframes sube{from{transform:translateY(40px);opacity:0}}
@keyframes aparece{from{opacity:0}}
.entrada{animation:sube .5s cubic-bezier(.2,.9,.3,1) both}