/* ===========================================================
   LNG MÉXICO — Sistema de diseño web
   Paleta: Amarillo Energía #F6C401 · Plata #DEE3E5 · Carbón #292929
   Tipografías: Optika (principal) · AeionMono (técnica)
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  --ink:#292929;
  --ink-2:#1d1d1d;
  --ink-3:#343434;
  --silver:#DEE3E5;
  --silver-2:#EAEDEF;
  --silver-3:#F2F4F5;
  --accent:#7C9CC0;        /* acero claro — acentos sobre fondos oscuros */
  --accent-2:#2C4F70;      /* navy hover (botones) */
  --accent-navy:#1F3A55;   /* azul de marca (navy) — botones y fondos */
  --accent-deep:#16293B;   /* navy profundo — acentos sobre fondos claros */
  --accent-ink:#ffffff;
  --muted:#8a9196;
  --sans:'Optika','Manrope',system-ui,-apple-system,sans-serif;
  --mono:'AeionMono','JetBrains Mono','SFMono-Regular',monospace;
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--silver);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.mono{font-family:var(--mono)}
.hl{color:var(--accent)}

/* ---------- utilidades de layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,64px)}
section{padding:clamp(64px,9vw,120px) 0}
.dark{background:var(--ink);color:var(--silver)}
.darker{background:var(--ink-2);color:var(--silver)}
.silver{background:var(--silver)}
.silver-2{background:var(--silver-2)}

/* ---------- tipografía ---------- */
.eyebrow{
  font-family:var(--mono);
  font-size:13px;
  font-weight:500;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex;
  align-items:center;
  gap:12px;
  margin-bottom:26px;
}
.eyebrow.on-light{color:var(--accent-deep)}
.eyebrow::before{content:"";width:34px;height:1px;background:currentColor;opacity:.7}
h1,h2,h3{font-weight:700;letter-spacing:-.02em;line-height:1.05}
.h-hero{font-family:var(--sans);font-weight:900;font-size:clamp(38px,6vw,80px);line-height:1.0;letter-spacing:-.03em;color:#fff}
h2.title{font-weight:800;font-size:clamp(30px,4.4vw,58px);line-height:1.06}
h3{font-weight:700;font-size:clamp(21px,2.4vw,30px)}
.lead{font-size:clamp(17px,1.5vw,21px);font-weight:400;line-height:1.55;color:inherit}
.dark .lead,.darker .lead{color:#c3cacd}

/* ---------- botones ---------- */
.btn{
  font-family:var(--sans);
  font-weight:700;
  font-size:15px;
  letter-spacing:.01em;
  border:none;cursor:pointer;
  border-radius:7px;
  padding:15px 26px;
  display:inline-flex;align-items:center;gap:10px;
  transition:transform .18s var(--ease),background .2s,color .2s,border-color .2s;
  white-space:nowrap;
}
.btn i{font-size:18px}
.btn:active{transform:scale(.97)}
.btn-y{background:var(--accent-navy);color:var(--accent-ink)}
.btn-y:hover{background:var(--accent-2);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--silver);border:1px solid rgba(222,227,229,.38)}
.btn-ghost:hover{border-color:var(--silver);background:rgba(222,227,229,.08)}
.btn-dark{background:var(--ink);color:var(--silver)}
.btn-dark:hover{background:#000}
.btn-sm{padding:10px 18px;font-size:13.5px}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;width:100%;z-index:100;
  display:flex;align-items:center;gap:24px;
  padding:22px clamp(20px,5vw,64px);
  transition:background .4s var(--ease),padding .4s var(--ease),border-color .4s,box-shadow .4s;
  border-bottom:1px solid transparent;
}
.site-header.solid{
  background:rgba(25,25,25,.82);
  backdrop-filter:blur(14px) saturate(1.1);
  -webkit-backdrop-filter:blur(14px) saturate(1.1);
  padding-top:14px;padding-bottom:14px;
  border-bottom:1px solid rgba(222,227,229,.12);
}
.brand{display:flex;align-items:center;height:40px}
.brand img{height:34px;width:auto}
.nav-links{display:flex;gap:30px;margin-left:auto}
.nav-links a{color:var(--silver);font-size:15px;font-weight:500;opacity:.82;transition:.2s;position:relative}
.nav-links a:hover{opacity:1;color:var(--accent)}
.nav-links a.active{opacity:1;color:var(--accent)}
.nav-cta{margin-left:8px}
.burger{display:none;background:none;border:none;color:var(--silver);font-size:26px;cursor:pointer;margin-left:auto}

/* ---------- progress bar ---------- */
.scroll-prog{position:fixed;top:0;left:0;height:3px;background:var(--accent);width:0;z-index:101;transition:width .1s linear}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;background:#101010}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media video,.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-veil{position:absolute;inset:0;z-index:1;
  background:linear-gradient(90deg,rgba(20,20,20,.92) 0%,rgba(20,20,20,.66) 42%,rgba(20,20,20,.28) 100%),
             linear-gradient(0deg,rgba(20,20,20,.85) 0%,rgba(20,20,20,0) 45%);}
.hero-content{position:relative;z-index:2;width:100%}
.hero .lead{max-width:52ch;margin-top:26px;color:#cfd5d8}
.hero-cta{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero-meta{position:absolute;left:clamp(20px,5vw,64px);bottom:30px;z-index:2;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:#cfd5d8;opacity:.78;
  display:flex;align-items:center;gap:11px}
.live-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);animation:blink 1.6s ease-in-out infinite}
@keyframes blink{50%{opacity:.25}}
.scroll-cue{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:2;color:var(--silver);opacity:.55;font-size:26px;animation:float 1.9s ease-in-out infinite}
@keyframes float{50%{transform:translate(-50%,8px)}}

/* ---------- grid asimétrico 5/7 ---------- */
.asym{display:grid;grid-template-columns:5fr 7fr;gap:clamp(30px,5vw,72px);align-items:center}
.asym.rev{grid-template-columns:7fr 5fr}
.asym .col-narrow,.asym .col-wide{min-width:0}

/* ---------- social proof / autoridad ---------- */
.proof-label{font-family:var(--mono);font-size:12.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
.proof-statement{font-size:clamp(22px,2.6vw,34px);font-weight:600;line-height:1.25;letter-spacing:-.015em;max-width:24ch}
.logo-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.chip{font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:#5d666b;border:1px solid rgba(41,41,41,.16);border-radius:6px;padding:11px 18px;background:rgba(255,255,255,.45)}

/* ---------- grid de instructores ---------- */
.faces{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:14px;margin-top:46px}
.face{position:relative;aspect-ratio:1/1;border-radius:12px;overflow:hidden;background:#cdd4d7}
.face img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.02);transition:filter .5s var(--ease),transform .6s var(--ease)}
.face:hover img{filter:grayscale(0);transform:scale(1.05)}
.face .idx{position:absolute;top:9px;left:11px;font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.85);letter-spacing:.1em;z-index:2;text-shadow:0 1px 3px rgba(0,0,0,.5)}
.face::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(28,28,28,.35),transparent 55%)}

/* ---------- tarjeta de curso destacado ---------- */
.course-card{background:#fff;border-radius:16px;padding:clamp(26px,3vw,40px);border:1px solid rgba(41,41,41,.09);box-shadow:0 30px 60px -40px rgba(41,41,41,.5)}
.course-tag{font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:#7a8186;text-transform:uppercase}
.course-card h3{margin-top:10px;font-size:clamp(26px,3vw,38px);font-weight:800}
.course-specs{display:flex;flex-wrap:wrap;gap:9px;margin:22px 0 28px}
.course-specs span{font-family:var(--mono);font-size:12.5px;color:var(--ink);background:var(--silver-2);padding:8px 13px;border-radius:6px}

/* ---------- ficha técnica ---------- */
.fact-strip{display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border:1px solid rgba(41,41,41,.12);border-radius:14px;overflow:hidden}
.fact{padding:26px 22px;border-right:1px solid rgba(41,41,41,.09)}
.fact:last-child{border-right:none}
.fact i{font-size:24px;color:var(--ink);display:block;margin-bottom:14px}
.fact .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.fact .v{font-family:var(--mono);font-weight:600;font-size:16px}

/* ---------- bloques de 3 (problema/persona) ---------- */
.trio{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,46px);margin-top:14px}
.trio h3{font-size:21px;font-weight:700;margin-bottom:12px;color:#fff}
.trio p{font-size:15.5px;line-height:1.6;color:#bcc3c7}

/* ---------- valor diferencial (cards) ---------- */
.value-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:44px}
.value-card{background:#fff;border:1px solid rgba(41,41,41,.09);border-radius:16px;padding:30px;transition:transform .35s var(--ease),box-shadow .35s}
.value-card:hover{transform:translateY(-5px);box-shadow:0 26px 50px -34px rgba(41,41,41,.5)}
.value-ic{width:50px;height:50px;border-radius:11px;background:var(--ink);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:25px;margin-bottom:20px}
.value-card h3{font-size:19px;font-weight:700;margin-bottom:9px;line-height:1.2}
.value-card p{font-size:14.5px;color:#5a6266;line-height:1.55}
.value-card p b{font-family:var(--mono);font-weight:600;color:var(--ink);font-size:13.5px}

/* ---------- módulos asimétricos full-bleed ---------- */
.module{display:grid;grid-template-columns:5fr 7fr;min-height:min(78vh,640px);scroll-margin-top:84px}
.module.rev{grid-template-columns:7fr 5fr}
.module.rev .mod-text{order:2}
.module.rev .mod-media{order:1}
.mod-text{display:flex;flex-direction:column;justify-content:center;padding:clamp(40px,6vw,88px)}
.mod-num{font-family:var(--mono);font-size:14px;letter-spacing:.24em;color:var(--accent);margin-bottom:18px}
.module.light .mod-num{color:var(--accent-deep)}
.mod-text h3{font-size:clamp(24px,3vw,40px);font-weight:800;line-height:1.08;margin-bottom:20px}
.mod-learn{font-size:clamp(15px,1.4vw,18px);line-height:1.55}
.mod-learn .label{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;opacity:.6;display:block;margin-bottom:9px}
.mod-media{position:relative;overflow:hidden;background:#1a1a1a;min-height:280px}
.mod-media img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease)}
.module:hover .mod-media img{transform:scale(1.06)}
.mod-media .cap{position:absolute;left:24px;bottom:20px;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.6);z-index:2;display:flex;align-items:center;gap:8px}
.mod-media::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(20,20,20,.55),transparent 50%)}
.markets{background:var(--ink-2)}
.markets .ticker{position:absolute;inset:0;background:url('assets/img/textura.jpg') center/cover;opacity:.22;mix-blend-mode:luminosity}

/* ---------- breathe / b-roll full-width ---------- */
.breathe{position:relative;min-height:min(70vh,560px);display:flex;align-items:center;overflow:hidden}
.breathe img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.breathe .veil{position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(20,20,20,.86),rgba(20,20,20,.4))}
.breathe .quote{position:relative;z-index:2;max-width:24ch;font-size:clamp(26px,3.6vw,46px);font-weight:800;line-height:1.12;color:#fff;letter-spacing:-.02em}

/* ---------- cta final ---------- */
.cta-final{text-align:center}
.cta-final .title{max-width:18ch;margin:0 auto}
.cta-final .lead{max-width:56ch;margin:20px auto 0}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-2);color:#aab1b5;padding:64px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-grid img{height:30px;margin-bottom:18px}
.foot-grid p{font-size:14px;max-width:34ch}
.foot-col .flabel{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:#6a7175;margin-bottom:14px}
.foot-col a{display:block;font-size:14px;margin-bottom:11px;opacity:.85;transition:.2s}
.foot-col a:hover{color:var(--accent);opacity:1}
.foot-bottom{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:#6a7175;border-top:1px solid rgba(255,255,255,.07);margin-top:46px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---------- animación fade-in-up ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}.d4{transition-delay:.4s}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .nav-links,.nav-cta{display:none}
  .burger{display:block}
  .asym,.asym.rev{grid-template-columns:1fr;gap:34px}
  .module,.module.rev{grid-template-columns:1fr}
  .module.rev .mod-text{order:1}.module.rev .mod-media{order:2}
  .mod-media{min-height:300px}
  .trio{grid-template-columns:1fr}
  .fact-strip{grid-template-columns:repeat(2,1fr)}
  .fact:nth-child(2n){border-right:none}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero-veil{background:linear-gradient(0deg,rgba(20,20,20,.92),rgba(20,20,20,.45))}
}

/* ---------- cadena de valor (infografía integrada) ---------- */
.chain-grid{display:grid;grid-template-columns:repeat(6,1fr);margin-top:48px;border-top:1px solid rgba(222,227,229,.16)}
.chain-step{position:relative;padding:28px 18px 26px;border-right:1px solid rgba(222,227,229,.08);transition:background .35s var(--ease);text-decoration:none;display:block}
.chain-step:last-child{border-right:none}
.chain-step::before{content:"";position:absolute;top:-2px;left:0;width:20px;height:3px;background:var(--accent);transition:width .55s var(--ease)}
.chain-step:hover::before{width:100%}
.chain-step:hover{background:rgba(1,161,224,.07)}
.chain-num{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.12em}
.chain-ic{font-size:30px;color:var(--silver);margin:18px 0 14px;display:block;transition:color .3s,transform .4s var(--ease)}
.chain-step:hover .chain-ic{color:var(--accent);transform:translateY(-3px)}
.chain-h{font-size:16px;font-weight:700;color:#fff;line-height:1.2}
.chain-cap{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--muted);margin-top:9px;text-transform:uppercase}
.chain-link{font-family:var(--mono);font-size:11px;color:var(--accent);margin-top:18px;display:inline-flex;align-items:center;gap:5px;opacity:.35;transition:opacity .35s var(--ease)}
.chain-step:hover .chain-link{opacity:1}

/* ---------- equipo / expertos ---------- */
.team{display:grid;grid-template-columns:repeat(auto-fit,minmax(176px,1fr));gap:16px;margin-top:50px}
.member{position:relative;border-radius:14px;overflow:hidden;background:#DEE3E5;aspect-ratio:4/5;border:1px solid rgba(41,41,41,.12);box-shadow:0 18px 40px -30px rgba(41,41,41,.55)}
.member img{width:100%;height:100%;object-fit:cover;object-position:top center;filter:grayscale(1) contrast(1.03);transition:filter .55s var(--ease),transform .7s var(--ease)}
.member:hover img{filter:grayscale(0);transform:scale(1.04)}
.member::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(18,18,18,.93) 6%,rgba(18,18,18,.05) 52%)}
.member .info{position:absolute;left:18px;right:14px;bottom:15px;z-index:2}
.member .mname{color:#fff;font-weight:700;font-size:15.5px;line-height:1.16}
.member .mrole{font-family:var(--mono);font-size:10px;letter-spacing:.08em;color:var(--accent);margin-top:7px;text-transform:uppercase}
.member .midx{position:absolute;top:12px;left:15px;z-index:2;font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.6)}
.team-cta{display:inline-flex;align-items:center;gap:9px;margin-top:30px;font-family:var(--mono);font-size:13px;letter-spacing:.05em;color:var(--accent-deep);font-weight:600}
.team-cta:hover{color:var(--accent)}

/* ---------- page-hero interior (< 100vh) + b2b ---------- */
.page-hero{min-height:min(68vh,580px)}
.btn-light{background:var(--silver);color:var(--ink)}
.btn-light:hover{background:#fff;transform:translateY(-2px)}
.b2b-card{background:var(--accent-deep);border-radius:18px;padding:clamp(34px,5vw,64px)}
.b2b-card h2{color:#fff;max-width:20ch}
.b2b-card .lead{color:#b9c8da;max-width:54ch;margin-top:16px}

@media(max-width:860px){
  .chain-grid{grid-template-columns:repeat(2,1fr);border-top:none}
  .chain-step{border-bottom:1px solid rgba(222,227,229,.08)}
  .chain-step:nth-child(2n){border-right:none}
  .team{grid-template-columns:repeat(2,1fr)}
}