/* VideoFabriK · sistema visual 2026 (portada cinematográfica + pulido general). Se carga al final y gana a las hojas previas. */
@font-face{font-family:'Inter';src:url('assets/fonts/Inter-Variable.woff2') format('woff2');font-weight:100 900;font-display:swap}
@font-face{font-family:'Space Grotesk';src:url('assets/fonts/SpaceGrotesk-Variable.woff2') format('woff2');font-weight:300 700;font-display:swap}
:root{
  --vf-bg:#06070b;--vf-bg2:#0c0e15;--vf-card:#11141d;--vf-line:rgba(255,255,255,.09);--vf-text:#f3f5fb;--vf-dim:#a3abbd;--vf-faint:#6c7487;
  --vf-blue:#3d7bff;--vf-blue2:#7aa2ff;--vf-coral:#ff6a4d;--vf-mint:#3ce0b0;--vf-grad:linear-gradient(115deg,#3d7bff 0%,#8f6bff 45%,#ff6a4d 100%);
  --vf-radius:22px;--vf-ease:cubic-bezier(.22,1,.36,1);
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,.academy-title,.brand{font-family:'Space Grotesk','Inter',sans-serif;letter-spacing:-.02em}
.preview-strip{display:none!important}

/* ---------- portada oscura ---------- */
body.vf-home{background:var(--vf-bg);color:var(--vf-text)}
body.vf-home .site-header{position:fixed;inset:14px 14px auto 14px;z-index:40;background:rgba(10,12,18,.55);backdrop-filter:saturate(1.4) blur(18px);-webkit-backdrop-filter:saturate(1.4) blur(18px);border:1px solid var(--vf-line);border-radius:18px;color:var(--vf-text);box-shadow:0 10px 40px rgba(0,0,0,.35)}
body.vf-home .site-header nav a{color:var(--vf-dim)}
body.vf-home .site-header nav a:hover{color:#fff}
body.vf-home .brand,body.vf-home .brand span{color:#fff}
body.vf-home .brand b{color:var(--vf-faint)}
body.vf-home .site-header .button.secondary{background:#fff;color:#0b0d13;border-color:#fff}
body.vf-home .site-footer{background:var(--vf-bg);color:var(--vf-dim);border-top:1px solid var(--vf-line)}
body.vf-home .site-footer a,body.vf-home .footer-brand{color:var(--vf-text)}
.vf{position:relative;overflow:hidden}
.vf section{position:relative}
.vf-wrap{width:min(1180px,calc(100% - 40px));margin:0 auto}
.vf-eyebrow{display:inline-flex;align-items:center;gap:10px;font:600 12px/1 'Inter',sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--vf-blue2)}
.vf-eyebrow:before{content:"";width:22px;height:1px;background:currentColor}
.vf-grad{background:var(--vf-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.vf-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 24px;border-radius:999px;font:600 16px/1 'Inter',sans-serif;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .35s var(--vf-ease),box-shadow .35s var(--vf-ease),background .2s}
.vf-btn:focus-visible{outline:3px solid var(--vf-blue2);outline-offset:3px}
.vf-btn-primary{background:#fff;color:#0a0c12;box-shadow:0 10px 40px rgba(61,123,255,.35)}
.vf-btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 50px rgba(61,123,255,.5)}
.vf-btn-ghost{background:rgba(255,255,255,.04);color:#fff;border-color:rgba(255,255,255,.18)}
.vf-btn-ghost:hover{background:rgba(255,255,255,.1)}
.vf-btn-wa{background:#25d366;color:#05210f}
.vf-btn-wa:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(37,211,102,.35)}

/* héroe */
.vf-hero{min-height:min(100svh,940px);display:grid;align-items:center;padding:120px 0 60px;isolation:isolate}
.vf-hero:before{content:"";position:absolute;inset:-20% -10% auto -10%;height:120%;background:radial-gradient(40% 40% at 70% 40%,rgba(61,123,255,.28),transparent 70%),radial-gradient(30% 30% at 85% 75%,rgba(255,106,77,.18),transparent 70%),radial-gradient(35% 35% at 15% 20%,rgba(143,107,255,.16),transparent 70%);z-index:-2}
.vf-hero:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(70% 60% at 50% 40%,#000,transparent);z-index:-1}
.vf-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.vf-hero h1{font-size:clamp(46px,6.4vw,92px);line-height:.98;margin:22px 0 22px;color:#fff;font-weight:700}
.vf-hero p.vf-lead{font-size:clamp(17px,1.45vw,20px);line-height:1.6;color:var(--vf-dim);max-width:560px;margin:0 0 32px}
.vf-ctas{display:flex;flex-wrap:wrap;gap:12px}
.vf-trust{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;color:var(--vf-faint);font-size:14px}
.vf-trust b{color:#fff;font-weight:600}
.vf-stage{position:relative;height:min(78vh,700px);min-height:460px}
.vf-stage .vf-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:0;transition:opacity 1.1s var(--vf-ease)}
.vf-stage.vf-3d-ready .vf-canvas{opacity:1}
.vf-stage.vf-3d-ready .vf-fallback{opacity:0;transform:scale(.96)}
.vf-fallback{position:absolute;inset:0;display:grid;place-items:center;transition:opacity .8s var(--vf-ease),transform .8s var(--vf-ease)}
.vf-phone{width:min(300px,62%);aspect-ratio:9/19;border-radius:42px;padding:10px;background:linear-gradient(160deg,#2a2f3a,#0d0f14);box-shadow:0 40px 120px rgba(61,123,255,.35),inset 0 0 0 1px rgba(255,255,255,.12)}
.vf-phone img{width:100%;height:100%;object-fit:cover;border-radius:33px;display:block}
.vf-play{position:absolute;left:50%;bottom:6%;transform:translateX(-50%);z-index:3}

/* franja de formatos */
.vf-marquee{border-block:1px solid var(--vf-line);padding:20px 0;overflow:hidden;background:var(--vf-bg2)}
.vf-marquee-track{display:flex;gap:56px;width:max-content;animation:vf-marquee 38s linear infinite;color:var(--vf-dim);font:500 18px/1 'Space Grotesk',sans-serif;white-space:nowrap}
.vf-marquee-track span:before{content:"✦";margin-right:56px;color:var(--vf-blue)}
@keyframes vf-marquee{to{transform:translateX(-50%)}}

/* secciones */
.vf-section{padding:clamp(80px,11vw,150px) 0}
.vf-head{max-width:760px;margin-bottom:56px}
.vf-head h2{font-size:clamp(36px,4.6vw,64px);line-height:1.02;margin:18px 0 18px;color:#fff;font-weight:700}
.vf-head p{color:var(--vf-dim);font-size:18px;line-height:1.65;margin:0}
.vf-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.vf-step{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));border:1px solid var(--vf-line);border-radius:var(--vf-radius);padding:30px;transition:transform .5s var(--vf-ease),border-color .3s}
.vf-step:hover{transform:translateY(-6px);border-color:rgba(122,162,255,.4)}
.vf-step:before{counter-increment:s;content:"0" counter(s);display:block;font:700 15px/1 'Space Grotesk';color:var(--vf-blue2);margin-bottom:46px}
.vf-step h3{font-size:24px;margin:0 0 10px;color:#fff}
.vf-step p{color:var(--vf-dim);line-height:1.6;margin:0}

/* galería con inclinación 3D */
.vf-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;perspective:1100px}
.vf-tile{position:relative;border-radius:var(--vf-radius);overflow:hidden;aspect-ratio:3/4;background:#111;border:1px solid var(--vf-line);transform-style:preserve-3d;transition:transform .5s var(--vf-ease),box-shadow .5s;cursor:pointer;text-align:left;padding:0;color:#fff}
.vf-tile img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .8s var(--vf-ease)}
.vf-tile:hover img{transform:scale(1.06)}
.vf-tile:hover{box-shadow:0 30px 80px rgba(0,0,0,.5)}
.vf-tile figcaption{position:absolute;inset:auto 0 0 0;padding:70px 20px 20px;background:linear-gradient(transparent,rgba(0,0,0,.85))}
.vf-tile small{display:block;font:600 11px/1 'Inter';letter-spacing:.14em;color:var(--vf-blue2);margin-bottom:8px}
.vf-tile strong{font:700 22px/1.1 'Space Grotesk'}

/* video destacado */
.vf-demo{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.vf-demo-frame{position:relative;border-radius:28px;overflow:hidden;border:1px solid var(--vf-line);box-shadow:0 40px 120px rgba(0,0,0,.6)}
.vf-demo-frame img{width:100%;display:block;aspect-ratio:16/10;object-fit:cover}
.vf-demo-frame button{position:absolute;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.18);border:0;cursor:pointer;color:#fff}
.vf-demo-frame button span{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.95);color:#0a0c12;font-size:26px;box-shadow:0 0 0 14px rgba(255,255,255,.12);transition:transform .4s var(--vf-ease)}
.vf-demo-frame button:hover span{transform:scale(1.08)}
.vf-list{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:14px}
.vf-list li{display:flex;gap:12px;color:var(--vf-dim);line-height:1.5}
.vf-list li:before{content:"";flex:0 0 20px;height:20px;border-radius:50%;margin-top:2px;background:var(--vf-blue) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5.5 10.5l3 3 6-7' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/14px no-repeat}

/* planes */
.vf-plans{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
.vf-plan{position:relative;display:flex;flex-direction:column;background:var(--vf-card);border:1px solid var(--vf-line);border-radius:26px;padding:28px 24px 24px;transition:transform .5s var(--vf-ease),border-color .3s}
.vf-plan:hover{transform:translateY(-6px);border-color:rgba(122,162,255,.35)}
.vf-plan.featured{background:linear-gradient(180deg,#152448,#0f1424 60%);border-color:rgba(122,162,255,.55);box-shadow:0 30px 90px rgba(61,123,255,.25)}
.vf-plan .vf-badge{position:absolute;top:-12px;left:24px;padding:6px 12px;border-radius:999px;font:700 11px/1 'Inter';letter-spacing:.12em;background:var(--vf-grad);color:#fff}
.vf-plan h3{font-size:20px;color:#fff;margin:0 0 6px}
.vf-plan .vf-for{color:var(--vf-faint);font-size:14px;line-height:1.45;min-height:40px;margin:0}
.vf-price{font:700 48px/1 'Space Grotesk';color:#fff;margin:22px 0 4px}
.vf-price small{font:500 15px 'Inter';color:var(--vf-faint);margin-left:6px}
.vf-plan .vf-term{color:var(--vf-dim);font-size:13px;margin:0 0 18px}
.vf-plan ul{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:10px;flex:1}
.vf-plan li{color:var(--vf-dim);font-size:14.5px;line-height:1.45;padding-left:22px;position:relative}
.vf-plan li:before{content:"";position:absolute;left:0;top:7px;width:8px;height:8px;border-radius:50%;background:var(--vf-blue2)}
.vf-plan .vf-btn{width:100%}
.vf-note{color:var(--vf-faint);font-size:14px;line-height:1.6;margin-top:26px;max-width:880px}

/* requisitos y programa */
.vf-reqs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.vf-req{border:1px solid var(--vf-line);border-radius:var(--vf-radius);padding:26px;background:rgba(255,255,255,.02)}
.vf-req b{display:block;font:700 13px 'Space Grotesk';color:var(--vf-blue2);margin-bottom:22px}
.vf-req h3{font-size:20px;color:#fff;margin:0 0 8px}
.vf-req p{color:var(--vf-dim);line-height:1.6;margin:0;font-size:15px}
.vf-modules{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;border-top:1px solid var(--vf-line)}
.vf-module{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--vf-line);color:#fff;text-decoration:none;align-items:baseline}
.vf-module span{font:600 13px 'Space Grotesk';color:var(--vf-faint);min-width:26px}
.vf-module strong{font:600 18px/1.3 'Space Grotesk'}
.vf-module em{display:block;font-style:normal;color:var(--vf-faint);font-size:14px;margin-top:4px;font-family:'Inter'}
.vf-module:hover strong{color:var(--vf-blue2)}

/* preguntas */
.vf-faq{max-width:860px}
.vf-faq details{border-bottom:1px solid var(--vf-line);padding:4px 0}
.vf-faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;padding:22px 0;font:600 19px/1.35 'Space Grotesk';color:#fff}
.vf-faq summary::-webkit-details-marker{display:none}
.vf-faq summary:after{content:"+";font:400 26px/1 'Inter';color:var(--vf-blue2);transition:transform .3s}
.vf-faq details[open] summary:after{transform:rotate(45deg)}
.vf-faq details p{color:var(--vf-dim);line-height:1.7;margin:0 0 22px;max-width:760px}
.vf-final{text-align:center;padding:clamp(90px,12vw,160px) 0;background:radial-gradient(50% 60% at 50% 100%,rgba(61,123,255,.25),transparent 70%)}
.vf-final h2{font-size:clamp(40px,5.6vw,76px);line-height:1;color:#fff;margin:18px auto 22px;max-width:900px}
.vf-final p{color:var(--vf-dim);font-size:18px;margin:0 auto 34px;max-width:620px;line-height:1.6}
.vf-final .vf-ctas{justify-content:center}

/* compra / acceso */
.vf-buy{padding:130px 0 90px;min-height:100svh}
.vf-buy-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:46px 0}
.vf-buy-steps div{border:1px solid var(--vf-line);border-radius:20px;padding:22px;color:var(--vf-dim);line-height:1.55;background:rgba(255,255,255,.02)}
.vf-buy-steps b{display:block;color:#fff;font:700 17px 'Space Grotesk';margin-bottom:8px}

/* revelado al hacer scroll */
.vf-reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--vf-ease),transform .9s var(--vf-ease)}
.vf-reveal.vf-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.vf-reveal{opacity:1;transform:none;transition:none}.vf-marquee-track{animation:none}.vf-step,.vf-plan,.vf-tile,.vf-btn{transition:none}}

/* responsivo */
@media (max-width:1080px){.vf-plans{grid-template-columns:repeat(2,1fr)}.vf-gallery{grid-template-columns:repeat(2,1fr)}}
@media (max-width:860px){
  .vf-hero{padding-top:110px}
  .vf-hero-grid,.vf-demo{grid-template-columns:1fr}
  .vf-stage{height:56vh;min-height:380px;max-height:520px;margin-top:6px}
  .vf-steps,.vf-reqs,.vf-buy-steps{grid-template-columns:1fr}
  .vf-modules{grid-template-columns:1fr}
  body.vf-home .site-header nav{display:none}
}
@media (max-width:560px){
  .vf-wrap{width:calc(100% - 32px)}
  .vf-plans,.vf-gallery{grid-template-columns:1fr}
  .vf-hero h1{font-size:44px}
  .vf-ctas .vf-btn{width:100%}
  body.vf-home .site-header{inset:10px 10px auto 10px}
  body.vf-home .brand b{display:none}
}

/* ---------- pulido general del aula y la cuenta (claro) ---------- */
body:not(.vf-home) .site-header{backdrop-filter:saturate(1.4) blur(16px);-webkit-backdrop-filter:saturate(1.4) blur(16px)}
.button,.vf-btn{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid #3d7bff;outline-offset:2px}
/* aula: escala de títulos en tarjetas (la fuente ahora sí se carga) */
.resource-card h2{font-size:clamp(22px,2vw,28px);line-height:1.15}
.tree-root h2{font-size:26px}
/* lienzo 3D más ancho en escritorio y bordes difuminados (nada se corta en seco) */
.vf-stage .vf-canvas{-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 9%,#000 91%,transparent 100%),linear-gradient(180deg,#000 85%,transparent 100%);-webkit-mask-composite:source-in;mask-image:linear-gradient(90deg,transparent 0,#000 9%,#000 91%,transparent 100%),linear-gradient(180deg,#000 85%,transparent 100%);mask-composite:intersect}
@media (min-width:861px){.vf-stage{margin:0 -70px 0 -110px}}
.vf-hero .hero-copy{position:relative;z-index:2}
.vf-stage{z-index:1}.vf-stage .vf-canvas{pointer-events:none}
.vf-plan ul{align-content:start}
/* botón de ayuda flotante (aula y cuenta) */
.vf-help{position:fixed;right:18px;bottom:18px;z-index:60;display:inline-flex;align-items:center;gap:10px;padding:12px 18px;border-radius:999px;background:#0b0d13;color:#fff;font:600 14px/1 'Inter',sans-serif;text-decoration:none;box-shadow:0 12px 34px rgba(11,13,19,.28);transition:transform .3s cubic-bezier(.22,1,.36,1)}
.vf-help:hover{transform:translateY(-2px)}
.vf-help span{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:#3d7bff;font-size:13px}
.vf-help[hidden]{display:none}
@media (max-width:560px){.vf-help{right:12px;bottom:12px;padding:11px 14px;font-size:13px}}
@media print{.vf-help{display:none}}

/* panel del administrador */
.vf-admin{padding:120px 0 80px;background:#f6f7f9;min-height:100svh}
.vf-admin-wrap{width:min(1100px,calc(100% - 32px));margin:0 auto;display:grid;gap:18px}
.vf-admin-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.vf-admin-card{background:#fff;border:1px solid #e1e4e9;border-radius:20px;padding:24px;display:grid;gap:12px;align-content:start;overflow:hidden}
.vf-admin-card h2{font-size:22px;margin:0}
.vf-admin-card label{display:grid;gap:6px;font-size:14px;color:#4b5160}
.vf-admin-card input,.vf-admin-card select{font:inherit;padding:11px 12px;border:1px solid #d6dae2;border-radius:12px;background:#fff}
.vf-admin-code{background:#0b0d13;color:#fff;border-radius:14px;padding:16px;display:grid;gap:10px}
.vf-admin-code code{font-size:15px;word-break:break-all;color:#9db7ff}
.vf-admin-table{overflow-x:auto}
.vf-admin-table table{width:100%;border-collapse:collapse;font-size:14px}
.vf-admin-table th{text-align:left;color:#626772;font-weight:600;padding:8px;border-bottom:1px solid #e1e4e9}
.vf-admin-table td{padding:10px 8px;border-bottom:1px solid #f0f1f4;vertical-align:top}
.vf-admin-order{margin-bottom:4px}
@media (max-width:760px){.vf-admin-grid{grid-template-columns:1fr}}

/* pulido aula */
.vf-help b{font-weight:600}
@media (max-width:560px){.vf-help{padding:0;width:48px;height:48px;justify-content:center}.vf-help b{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.vf-help span{width:48px;height:48px;font-size:20px}}
.product-symbol svg,.script-symbol svg{display:block;margin:auto}
.product-symbol,.script-symbol{color:#2563eb;background:linear-gradient(145deg,#eef3ff,#e3ebff);border-color:#d5e0fb}

.vf-admin-inline{display:flex;flex-wrap:wrap;gap:12px;align-items:end}.vf-admin-inline label{flex:1 1 160px}

/* tarjeta de instalación de la fábrica */
.vf-fabrica-card{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;background:linear-gradient(135deg,#0b1020,#16224a);color:#fff;border-radius:22px;padding:26px 28px;margin:22px 0}
.vf-fabrica-card h2{color:#fff;margin:6px 0 8px;font-size:26px}.vf-fabrica-card p{color:#c9d3ef;margin:0;max-width:640px}
.vf-fabrica-card .tiny-label{color:#8fb0ff}
#vf-fabrica-msg{grid-column:1/-1;display:grid;gap:14px}#vf-fabrica-msg[hidden]{display:none}
.vf-fabrica-op{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:14px;display:grid;gap:10px}
.vf-fabrica-op pre{white-space:pre-wrap;word-break:break-all;margin:0;font-size:12.5px;color:#dbe4ff;background:rgba(0,0,0,.35);padding:12px;border-radius:10px}
@media (max-width:760px){.vf-fabrica-card{grid-template-columns:1fr;padding:22px}}