/* Concepto: planos técnicos sobre carbón. Los hexágonos del logo y los módulos
   apilados son el motivo; el turquesa de marca es el único acento. */
:root{
  --ink:#212426;     /* marca: carbón */
  --turq:#41D9CA;    /* marca: turquesa */
  --teal:#37A69B;    /* marca: verde azulado */
  --paper:#F2F2F2;   /* marca: gris claro */
  --white:#FFFFFF;
  --deep:#17191A;    /* carbón más profundo, para el pie */
  --body:#2F3638;    /* texto sobre fondos claros */
  --muted:#586164;
  --line:#D7DBDC;
  --steel:#B9C3C4;   /* texto sobre fondos oscuros */
  --f-display:"Barlow Condensed","Arial Narrow","Roboto Condensed",sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --gut:clamp(16px,5vw,40px);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--white);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6;-webkit-text-size-adjust:100%}
p{margin:0}
h1,h2,h3{font-family:var(--f-display);text-transform:uppercase;line-height:.98;margin:0;text-wrap:balance;letter-spacing:.005em}
.wrap{max-width:1120px;margin:0 auto;padding-inline:var(--gut)}
section{padding-block:clamp(48px,8vw,96px)}
a:focus-visible,.btn:focus-visible{outline:3px solid var(--teal);outline-offset:3px}

.label{font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;display:inline-flex;align-items:center;gap:10px}
.label::before{content:"";width:10px;height:10px;background:var(--mark,var(--teal));flex:none}
.hero,.why,.contact,footer{--mark:var(--turq)}
.pledge{--mark:var(--ink)}

.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 24px;font-family:var(--f-display);font-weight:700;font-size:19px;letter-spacing:.07em;text-transform:uppercase;text-decoration:none;border:2px solid var(--turq);background:var(--turq);color:var(--ink);transition:transform .15s ease}
.btn:hover{transform:translateY(-2px)}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(185,195,196,.55)}
.btn.sm{padding:8px 16px;font-size:16px}

/* Navegación */
.nav{position:sticky;top:0;z-index:10;background:var(--paper);border-bottom:4px solid var(--turq)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:12px}
.brand{display:block;line-height:0;flex:none}
.logo{height:50px;width:auto;display:block}
.nav .btn{background:var(--ink);border-color:var(--ink);color:var(--turq)}

/* Hero */
.grid-bg{background-image:linear-gradient(rgba(65,217,202,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(65,217,202,.08) 1px,transparent 1px);background-size:44px 44px}
.hero{background-color:var(--ink);color:#fff;overflow:hidden;padding-block:0}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,5vw,64px);align-items:center;padding-block:clamp(36px,7vw,88px)}
.hero-copy{min-width:0}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px;padding:0;list-style:none}
.chips li{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;padding:6px 10px;border:1px solid rgba(65,217,202,.45);color:var(--turq)}
.hero h1{font-size:clamp(38px,9vw,76px);font-weight:800}
.hero h1 em,.contact h2 em{font-style:normal;color:var(--turq)}
.lead{margin-top:22px;max-width:54ch;color:var(--steel);font-size:clamp(17px,2.4vw,19px)}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.mods{width:100%;max-width:420px;height:auto;justify-self:center}
.ground{stroke:var(--steel);stroke-width:2}
.dim{stroke:var(--steel);stroke-width:1;fill:none}
.dimt{fill:var(--steel);font-family:var(--f-mono);font-size:10px;letter-spacing:.24em}

/* Quiénes somos */
.about{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(20px,5vw,64px);align-items:start}
.about h2,.sec-head h2{font-size:clamp(38px,7vw,64px);font-weight:800}
.about .head{display:grid;gap:14px}
.about .body{display:grid;gap:18px;min-width:0;color:var(--body)}
.about .big{font-size:clamp(20px,3.2vw,24px);font-weight:600;line-height:1.35;color:var(--ink)}

/* Unidades */
.units{background:var(--paper)}
.sec-head{display:grid;gap:14px;margin-bottom:clamp(24px,4vw,44px)}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.card{background:var(--white);border:1px solid var(--line);padding:clamp(20px,3vw,30px);display:flex;flex-direction:column;gap:14px;min-width:0}
.card-top{display:flex;justify-content:space-between;align-items:center;gap:10px}
.num{font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.logo-badge{width:104px;height:104px;display:block;flex:none;border-radius:50%;box-shadow:0 0 0 1px var(--line)}
.card h3{font-size:clamp(32px,5vw,42px);font-weight:800}
.card p{color:var(--body);font-size:16px}
.sub{font-family:var(--f-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:4px}
.card ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.card li{position:relative;padding-left:22px;font-size:15.5px;line-height:1.45}
.card li::before{content:"";position:absolute;left:0;top:.45em;width:9px;height:9px;background:var(--teal)}
.note{font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px;margin-top:auto}
.card.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.card.dark .num{color:var(--turq)}
.card.dark p{color:var(--steel);font-size:18px}

/* Por qué */
.why{background-color:var(--ink);color:#fff}
.why .sec-head h2{color:#fff}
.why-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 28px}
.why-item{border-top:1px solid rgba(65,217,202,.35);padding:20px 0 30px}
.why-item h3{font-size:30px;font-weight:700;color:var(--turq);margin-bottom:8px}
.why-item p{color:var(--steel);font-size:16px}

/* Compromiso */
.pledge{background:var(--turq);color:var(--ink)}
.pledge .wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(20px,5vw,64px);align-items:center}
.pledge .head{display:grid;gap:14px}
.pledge h2{font-size:clamp(46px,9vw,84px);font-weight:800}
.pledge .body{display:grid;gap:18px;font-size:clamp(19px,2.8vw,24px);line-height:1.4;font-weight:500}

/* Contacto */
.contact{background-color:var(--ink);color:#fff}
.contact .wrap{display:grid;gap:18px}
.contact h2{font-size:clamp(46px,10vw,92px);font-weight:800;max-width:14ch}
.info{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0 0;max-width:680px}
.info div{border:1px dashed rgba(65,217,202,.5);padding:14px 16px}
.info dt{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--turq)}
.info dd{margin:4px 0 0;font-weight:600}

footer{background:var(--deep);color:var(--steel);padding-block:30px 96px;font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px 28px}
footer .brand{background:var(--paper);padding:12px 18px;display:inline-block}
footer .logo{height:42px}
footer p{max-width:48ch}

/* Movimiento: todo queda visible aunque no corra */
@keyframes rise{from{opacity:0;transform:translateY(14px)}}
.hero-copy>*{animation:rise .6s ease both}
.hero-copy>*:nth-child(2){animation-delay:.08s}
.hero-copy>*:nth-child(3){animation-delay:.16s}
.hero-copy>*:nth-child(4){animation-delay:.24s}
.mods use{animation:rise .7s ease both}
.mods use:nth-of-type(1){animation-delay:.1s}
.mods use:nth-of-type(2){animation-delay:.18s}
.mods use:nth-of-type(3){animation-delay:.26s}
.mods use:nth-of-type(4){animation-delay:.38s}
.mods use:nth-of-type(5){animation-delay:.46s}
.mods use:nth-of-type(6){animation-delay:.58s}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

@media (max-width:900px){
  .why-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .info{grid-template-columns:1fr}
}
@media (max-width:860px){
  .hero .wrap{grid-template-columns:1fr}
  .mods{max-width:340px}
  .about,.pledge .wrap{grid-template-columns:1fr}
}
@media (max-width:800px){
  .grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .why-grid{grid-template-columns:1fr}
  .cta .btn{flex:1 1 100%}
  .logo-badge{width:88px;height:88px}
  .logo{height:44px}
  .nav .btn.sm{padding:8px 12px;font-size:15px}
}

/* Enlaces de contacto */
.info dd a{color:#fff;text-decoration:none;border-bottom:2px solid var(--turq);overflow-wrap:anywhere}
.info dd a:hover{background:rgba(65,217,202,.18)}
footer a{color:var(--turq);text-decoration:none}
footer a:hover{text-decoration:underline}
.foot-contact{display:grid;gap:6px}
.copy{font-size:13px}

/* Botón flotante de WhatsApp */
.wa-float{position:fixed;right:max(16px,env(safe-area-inset-right,0px));bottom:max(16px,env(safe-area-inset-bottom,0px));z-index:20;background:var(--turq);color:var(--ink);font-family:var(--f-display);font-weight:700;font-size:18px;letter-spacing:.07em;text-transform:uppercase;text-decoration:none;padding:12px 20px;border:2px solid var(--ink);box-shadow:0 6px 18px rgba(0,0,0,.28);transition:transform .15s ease}
.wa-float:hover{transform:translateY(-2px)}

/* Página 404 */
.err .wrap{padding-block:clamp(24px,6vw,72px)}