/* Concepto: plano de obra nocturno. Fondo azul noche con retícula de plano,
   acero pulido del logo para titulares, azul del logo como único acento. */
:root{
  --noche:#0a1422;        /* fondo principal, azul noche del logo */
  --noche-2:#0f1d31;      /* bandas y tarjetas */
  --acero:#e6ebf1;        /* texto principal, plata del logo */
  --acero-2:#9aa8ba;      /* texto secundario */
  --azul:#2f8be6;         /* acento: azul del logo */
  --azul-claro:#7cc0ff;   /* acento sobre fondo oscuro */
  --linea:rgba(154,168,186,.18);
  --font-display:"Archivo",system-ui,sans-serif;
  --font-body:"Figtree",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono",ui-monospace,monospace;
  --max:1180px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--noche);color:var(--acero);font-family:var(--font-body);font-size:17px;line-height:1.6}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--noche)}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--font-display);font-stretch:112%;line-height:1.08;margin:0;text-wrap:balance}
h2{font-size:clamp(30px,4.2vw,48px);font-weight:700;letter-spacing:-.5px}
h3{font-size:19px;font-weight:700;letter-spacing:.1px}
p{margin:0}
:focus-visible{outline:2px solid var(--azul-claro);outline-offset:3px}
.wrap{max-width:var(--max);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.etiqueta{font-family:var(--font-mono);font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--azul-claro)}

/* Cabecera */
.cabecera{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(10,20,34,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--linea)}
.cabecera .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.marca{display:flex;align-items:center;gap:10px;text-decoration:none}
.marca img{height:38px;width:auto}
.marca span{display:flex;flex-direction:column;line-height:1.05}
.marca strong{font-family:var(--font-display);font-stretch:118%;font-size:18px;letter-spacing:2px}
.marca small{font-size:9px;letter-spacing:2px;color:var(--acero-2);margin-top:3px}
.menu{display:flex;gap:28px;font-size:14px}
.menu a{text-decoration:none;color:var(--acero-2)}
.menu a:hover{color:var(--acero)}
.acciones{display:flex;align-items:center;gap:12px}
.idioma{display:flex;border:1px solid var(--linea);border-radius:4px;overflow:hidden}
.idioma button{background:none;border:0;color:var(--acero-2);font:600 12px var(--font-mono);padding:7px 9px;cursor:pointer}
.idioma button[aria-pressed="true"]{background:var(--azul);color:#fff}
.btn{display:inline-flex;align-items:center;gap:10px;font:600 15px var(--font-body);text-decoration:none;padding:13px 20px;border-radius:4px;border:1px solid transparent;cursor:pointer}
.btn-azul{background:var(--azul);color:#fff}
.btn-azul:hover{background:#2479cf}
.btn-borde{border-color:var(--linea);color:var(--acero)}
.btn-borde:hover{border-color:var(--acero-2)}
.cabecera .btn{padding:10px 14px;font-size:14px}
.abrir-menu{display:none;background:none;border:1px solid var(--linea);color:var(--acero);border-radius:4px;padding:8px 10px;font-size:18px;cursor:pointer}

/* Portada */
.portada{position:relative;overflow:hidden;border-bottom:1px solid var(--linea);
  background:
    linear-gradient(var(--linea) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(90deg,var(--linea) 1px,transparent 1px) 0 0/48px 48px,
    radial-gradient(ellipse at 70% 40%,#16345a 0%,var(--noche) 62%)}
.portada .wrap{display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:40px;padding-block:72px 64px}
.portada h1{font-size:clamp(44px,7vw,88px);font-weight:800;letter-spacing:-1.5px;
  background:linear-gradient(180deg,#ffffff 0%,#c9d3df 55%,#8796aa 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.portada h1 em{font-style:normal;display:block;background:linear-gradient(180deg,#9fd2ff,#2f8be6);-webkit-background-clip:text;background-clip:text;color:transparent}
.portada .texto{display:grid;gap:22px;min-width:0}
.portada .lead{font-size:19px;color:var(--acero-2);max-width:34em}
.portada .botones{display:flex;flex-wrap:wrap;gap:12px}
.cota{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;color:var(--acero-2);letter-spacing:1px}
.cota::before,.cota::after{content:"";height:1px;flex:1;background:var(--acero-2);opacity:.4}
.portada .logo-grande{justify-self:center;width:min(100%,460px);filter:drop-shadow(0 18px 40px rgba(47,139,230,.25))}

/* Portada con foto */
.portada.con-foto{background:var(--noche)}
.portada .fondo{position:absolute;inset:0;z-index:0;width:100%;height:100%;object-fit:cover}
.portada.con-foto::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(10,20,34,.97) 0%,rgba(10,20,34,.88) 42%,rgba(10,20,34,.45) 100%)}
.portada.con-foto .wrap{position:relative;z-index:2;padding-block:120px 110px}
.portada.con-foto .logo-grande{width:min(100%,380px)}

/* Foto de empresa */
.foto-empresa{margin-top:18px;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:4px;border:1px solid var(--linea)}

/* Arquitectura */
.arquitectura{background:
  linear-gradient(var(--linea) 1px,transparent 1px) 0 0/48px 48px,
  linear-gradient(90deg,var(--linea) 1px,transparent 1px) 0 0/48px 48px,var(--noche)}
.arquitectura .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.arquitectura .texto{display:grid;gap:28px;min-width:0}
.arquitectura .cabeza{margin-bottom:0}
.arquitectura .btn{justify-self:start}
.fases{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:18px 28px;counter-reset:fase}
.fases li{display:grid;gap:4px;padding-left:40px;position:relative;counter-increment:fase}
.fases li::before{content:counter(fase,decimal-leading-zero);position:absolute;left:0;top:2px;font:500 13px var(--font-mono);color:var(--azul-claro)}
.fases strong{font-size:16px}
.fases span{font-size:14px;color:var(--acero-2)}
.fotos-arq{display:grid;grid-template-columns:1fr 1fr;gap:12px;min-width:0}
.fotos-arq img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:4px;border:1px solid var(--linea)}
.fotos-arq .principal{grid-column:1/-1;aspect-ratio:16/10}

/* Trabajos */
.galeria{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:220px;gap:12px}
.galeria figure{margin:0;position:relative;overflow:hidden;border-radius:4px;cursor:zoom-in;background:var(--noche-2)}
.galeria figure.grande{grid-column:span 2;grid-row:span 2}
.galeria img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.galeria figure:hover img{transform:scale(1.04)}
.galeria figcaption{position:absolute;left:0;right:0;bottom:0;padding:28px 14px 12px;font:500 13px var(--font-mono);letter-spacing:.5px;color:#fff;background:linear-gradient(transparent,rgba(5,10,18,.85))}
.visor{max-width:min(1200px,calc(100% - 32px));background:var(--noche)}
.visor img{width:100%;max-height:78vh;object-fit:contain}
.visor p{padding:12px 16px;font:500 14px var(--font-mono);color:var(--acero-2)}

/* Cifras */
.cifras{background:var(--noche-2);border-bottom:1px solid var(--linea)}
.cifras .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding-block:0}
.cifra{padding:28px 20px;border-left:1px solid var(--linea);display:grid;gap:4px}
.cifra:first-child{border-left:0;padding-left:0}
.cifra strong{font-family:var(--font-display);font-stretch:112%;font-size:34px;font-weight:800;color:var(--acero);font-variant-numeric:tabular-nums}
.cifra span{font-size:14px;color:var(--acero-2)}

/* Secciones */
.seccion{padding-block:88px}
.cabeza{display:grid;gap:14px;max-width:720px;margin-bottom:44px}
.cabeza p{color:var(--acero-2)}

/* Empresa */
.empresa .wrap{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.empresa .cuerpo{display:grid;gap:18px;color:var(--acero-2);min-width:0}
.empresa .cuerpo strong{color:var(--acero)}
.lista-check{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.lista-check li{display:flex;gap:12px;color:var(--acero)}
.lista-check li::before{content:"";flex:none;width:14px;height:8px;margin-top:8px;border-left:2px solid var(--azul-claro);border-bottom:2px solid var(--azul-claro);transform:rotate(-45deg)}

/* Servicios */
.servicios{background:var(--noche-2);border-block:1px solid var(--linea)}
.rejilla{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--linea);border-left:1px solid var(--linea)}
.servicio{padding:28px 22px;min-width:0;border-right:1px solid var(--linea);border-bottom:1px solid var(--linea);display:grid;gap:12px;align-content:start;transition:background .2s}
.servicio:hover{background:rgba(47,139,230,.07)}
.servicio svg{width:34px;height:34px;stroke:var(--azul-claro);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.servicio p{color:var(--acero-2);font-size:15px}

/* Proceso */
.pasos{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:paso}
.paso{border-top:2px solid var(--azul);padding-top:20px;display:grid;gap:10px}
.paso .num{font-family:var(--font-mono);font-size:13px;color:var(--azul-claro)}
.paso p{color:var(--acero-2);font-size:15px}

/* Preguntas */
.faq{display:grid;gap:0;border-top:1px solid var(--linea);max-width:860px}
.faq details{border-bottom:1px solid var(--linea)}
.faq summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;font:600 18px var(--font-body);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:18px;font:400 26px var(--font-mono);color:var(--azul-claro)}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 0 22px;color:var(--acero-2);max-width:65ch}

/* Contacto */
.contacto{background:var(--noche-2);border-top:1px solid var(--linea)}
.contacto .wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px}
.datos{display:grid;gap:22px;align-content:start;min-width:0}
.dato{display:grid;gap:2px}
.dato span{font-family:var(--font-mono);font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--acero-2)}
.dato a,.dato p{font-size:19px;text-decoration:none;color:var(--acero);overflow-wrap:anywhere}
.dato a:hover{color:var(--azul-claro)}
form{display:grid;grid-template-columns:1fr 1fr;gap:16px;min-width:0}
label{display:grid;gap:6px;font-size:14px;color:var(--acero-2)}
.ancho{grid-column:1/-1}
input,select,textarea{width:100%;background:var(--noche);border:1px solid var(--linea);border-radius:4px;color:var(--acero);font:16px var(--font-body);padding:12px 14px}
input:focus,select:focus,textarea:focus{border-color:var(--azul);outline:none}
.consentimiento{display:flex;gap:10px;align-items:flex-start;font-size:14px}
.consentimiento input{width:18px;height:18px;margin-top:2px;flex:none;accent-color:var(--azul)}
.consentimiento a{color:var(--azul-claro)}
.estado{grid-column:1/-1;font-size:15px;color:var(--azul-claro);min-height:1em}

/* Pie */
.pie{border-top:1px solid var(--linea);padding-block:40px;font-size:14px;color:var(--acero-2)}
.pie .wrap{display:grid;grid-template-columns:auto 1fr auto;gap:28px;align-items:center}
.pie img{height:46px;width:auto}
.legales{display:flex;flex-wrap:wrap;gap:18px}
.legales a{color:var(--acero-2)}
.legales a:hover{color:var(--acero)}

/* WhatsApp */
.whatsapp{position:fixed;right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:30;display:flex;align-items:center;gap:10px;background:#1fa855;color:#fff;text-decoration:none;font-weight:600;font-size:15px;padding:12px 18px 12px 14px;border-radius:999px;box-shadow:0 10px 30px rgba(0,0,0,.35)}
.whatsapp svg{width:24px;height:24px;fill:#fff}

/* Textos legales */
dialog{max-width:760px;width:calc(100% - 32px);max-height:85vh;background:var(--noche-2);color:var(--acero);border:1px solid var(--linea);border-radius:6px;padding:0}
dialog::backdrop{background:rgba(3,8,15,.75)}
.legal{padding:32px;display:grid;gap:14px;font-size:15px;color:var(--acero-2)}
.legal h2{font-size:26px;color:var(--acero)}
.legal h3{font-size:16px;color:var(--acero);margin-top:8px}
.legal strong{color:var(--acero)}
.cerrar{position:sticky;top:0;float:right;margin:12px;background:var(--noche);border:1px solid var(--linea);color:var(--acero);border-radius:4px;padding:6px 12px;cursor:pointer;font:600 14px var(--font-body)}

/* Móvil */
@media (max-width:1100px){.rejilla{grid-template-columns:repeat(2,1fr)}}
@media (max-width:960px){
  .menu{display:none}
  .menu.abierto{display:flex;flex-direction:column;position:absolute;top:72px;left:0;right:0;background:var(--noche);padding:20px max(16px,env(safe-area-inset-right,0px)) 24px max(16px,env(safe-area-inset-left,0px));border-bottom:1px solid var(--linea);gap:18px;font-size:17px}
  .abrir-menu{display:block}
  .cabecera .btn{display:none}
  .portada .wrap,.empresa .wrap,.contacto .wrap{grid-template-columns:1fr}
  .portada .logo-grande{order:-1;width:min(52%,240px)}
  .portada .wrap{padding-block:40px 48px;gap:24px}
  .rejilla{grid-template-columns:repeat(2,1fr)}
  .cifras .wrap{grid-template-columns:repeat(2,1fr)}
  .cifra:nth-child(3){border-left:0;padding-left:0}
  .cifra:nth-child(n+3){border-top:1px solid var(--linea)}
  .pie .wrap{grid-template-columns:1fr}
  .galeria{grid-template-columns:repeat(2,1fr);grid-auto-rows:180px}
  .arquitectura .wrap{grid-template-columns:1fr}
  .portada.con-foto .wrap{padding-block:56px 56px}
  .portada.con-foto::before{background:rgba(10,20,34,.78)}
}
@media (max-width:620px){
  .galeria{grid-template-columns:1fr 1fr;grid-auto-rows:140px;gap:8px}
  .fases{grid-template-columns:1fr}
}
@media (max-width:620px){
  body{font-size:16px}
  .seccion{padding-block:64px}
  .rejilla,.pasos,form{grid-template-columns:1fr}
  .marca small{display:none}
  .whatsapp span{display:none}
  .whatsapp{padding:14px}
  .legal{padding:24px 20px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.servicio{transition:none}}