/* CAS Telecom Ingeniería · estilos */

@font-face{font-family:"Archivo";src:url("../fonts/archivo-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Archivo";src:url("../fonts/archivo-latin-500-normal.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Archivo";src:url("../fonts/archivo-latin-600-normal.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Archivo";src:url("../fonts/archivo-latin-700-normal.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Archivo";src:url("../fonts/archivo-latin-800-normal.woff2") format("woff2");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("../fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("../fonts/jetbrains-mono-latin-500-normal.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}

:root{
  --navy:#162B4E;
  --navy-deep:#0F1F3A;
  --navy-line:#2E4570;
  --slate:#3C4858;
  --muted:#5A6677;
  --paper:#F4F6F9;
  --white:#FFFFFF;
  --line:#D9DEE6;
  --field:#A9B3C2;
  --on-dark:#D6DEEA;
  --on-dark-muted:#A9B7CC;
  --sans:"Archivo",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --radius:12px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--navy);background:var(--paper);font-size:17px;line-height:1.6}
img,svg{display:block;max-width:100%}
a{color:var(--navy)}
a:hover{color:#3853A4}
:focus-visible{outline:3px solid #3853A4;outline-offset:3px;border-radius:4px}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.1}
p{margin:0}
ul{margin:0}

.skip{position:absolute;left:-9999px;top:8px;background:var(--white);padding:10px 16px;z-index:100}
.skip:focus{left:16px}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* Cinta con el código de color de la fibra */
.ribbon{display:flex;height:6px}
.ribbon span{flex:1}
.ribbon--thin{height:4px}
.ribbon span:nth-child(1){background:#ED1F24}
.ribbon span:nth-child(2){background:#69BD45}
.ribbon span:nth-child(3){background:#3853A4}
.ribbon span:nth-child(4){background:#F3EC19}
.ribbon span:nth-child(5){background:#FFFFFF}
.ribbon span:nth-child(6){background:#808282}
.ribbon span:nth-child(7){background:#7F421C}
.ribbon span:nth-child(8){background:#6F52A2}
.ribbon span:nth-child(9){background:#5BC2BA}
.ribbon span:nth-child(10){background:#000000}
.ribbon span:nth-child(11){background:#F58020}
.ribbon span:nth-child(12){background:#D05B9A}

/* Cabecera */
.site-header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;gap:16px 32px;padding-top:14px;padding-bottom:14px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--navy)}
.brand img{width:46px;height:44px}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-weight:800;font-size:20px;letter-spacing:-.01em}
.brand-sub{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--muted)}
.nav-links{display:flex;flex-wrap:wrap;gap:4px 24px;flex:1 1 auto;justify-content:center;list-style:none;padding:0;margin:0}
.nav-links a{display:block;text-decoration:none;padding:10px 0;font-size:15px;font-weight:500;border-bottom:2px solid transparent}
.nav-links a[aria-current="page"]{font-weight:700;border-bottom-color:var(--navy)}
.nav-cta{margin-left:auto}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:6px;min-width:44px;min-height:44px;cursor:pointer;color:var(--navy)}
.nav-toggle svg{margin:auto}

@media (max-width:960px){
  .nav{flex-wrap:wrap}
  .nav-toggle{display:block}
  .nav .nav-cta{display:none}
  .nav-links{display:none;flex-basis:100%;flex-direction:column;gap:0;padding:8px 0}
  .nav-links a{padding:12px 0;font-size:17px;border-bottom:1px solid var(--line)}
  .nav-links a[aria-current="page"]{border-bottom-color:var(--line)}
  .nav.is-open .nav-links{display:flex}
  .nav.is-open .nav-cta{display:inline-block;margin:8px 0 4px}
}

/* Botones */
.btn{display:inline-block;text-decoration:none;font-weight:700;font-size:16px;padding:16px 26px;border-radius:6px;border:0;cursor:pointer;font-family:inherit;line-height:1.2;text-align:center}
.btn-dark{background:var(--navy);color:var(--white)}
.btn-dark:hover{background:var(--navy-deep);color:var(--white)}
.btn-light{background:var(--white);color:var(--navy)}
.btn-light:hover{background:#E6EAF0;color:var(--navy)}
.btn-outline{color:var(--white);border:1px solid #5B6E8C;padding:15px 25px;font-weight:600}
.btn-outline:hover{color:var(--white);border-color:var(--white)}
.btn-sm{padding:13px 20px;font-size:15px;font-weight:600}
.link-more{display:inline-block;font-weight:700;font-size:16px;padding:10px 0}

/* Tipografía de sección */
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-bottom:14px}
.on-dark .eyebrow{color:var(--on-dark-muted)}
.h1{font-size:clamp(36px,4.4vw,58px);line-height:1.08}
.h2{font-size:clamp(30px,3.4vw,44px)}
.h3{font-size:21px;line-height:1.2}
.lead{font-size:19px;line-height:1.6;color:var(--slate);max-width:44em}
.on-dark .lead{color:var(--on-dark)}
.text{font-size:16px;line-height:1.55;color:var(--slate)}
.on-dark{background:var(--navy);color:var(--white)}

.section{padding:96px 0}
.section--white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,360px),1fr));gap:24px 64px;align-items:end;margin-bottom:48px}
.section-head--stack{display:block;max-width:760px}
.section-head--stack .h2{margin-bottom:18px}

.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:40px 64px;align-items:start}
.grid-2--center{align-items:center}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:20px}

/* Hero */
.hero{padding:96px 0}
.hero-copy{display:flex;flex-direction:column;gap:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 32px;padding-top:20px;border-top:1px solid var(--navy-line);font-size:15px;color:var(--on-dark)}
.page-hero{padding:80px 0 88px}
.page-hero .h1{font-size:clamp(34px,4vw,54px);max-width:820px;margin-bottom:20px}
.page-hero .lead{max-width:720px}

/* Ciclo de proyecto */
.cycle{background:var(--white);color:var(--navy);border-radius:14px;padding:32px}
.cycle-title{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--muted);margin-bottom:16px}
.cycle ol{list-style:none;margin:0;padding:0}
.cycle li{display:flex;gap:16px}
.cycle-marker{display:flex;flex-direction:column;align-items:center}
.cycle-num{width:36px;height:36px;border-radius:50%;color:var(--white);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px;flex:none}
.cycle-line{width:2px;flex:1;background:var(--line);min-height:24px}
.cycle-body{padding-bottom:18px}
.cycle li:last-child .cycle-body{padding-bottom:8px}
.cycle-body strong{display:block;font-size:18px}
.cycle-body span{font-size:15px;color:var(--muted);line-height:1.5}
.cycle-pmo{margin-top:16px;background:var(--navy);color:var(--white);border-radius:8px;padding:14px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.cycle-pmo span{font-size:14px;color:var(--on-dark)}

/* Clientes */
.clients{background:var(--white);border-bottom:1px solid var(--line);padding:32px 0}
.clients-title{font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--muted);text-align:center;margin-bottom:18px}
.clients-list{display:flex;flex-wrap:wrap;justify-content:center;gap:16px 48px;list-style:none;padding:0;margin:0}
.clients-list li{display:flex;align-items:center;justify-content:center;min-height:56px}
.client-name{font-size:24px;font-weight:700;color:var(--slate);letter-spacing:-.01em}
.client-logo{height:44px;width:auto;display:block}

/* Tarjetas */
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:12px}
.card--top{border-top:4px solid var(--accent,#3853A4)}
.card-num{font-family:var(--mono);font-size:13px;color:var(--muted)}
.card--soft{background:var(--paper);border:0}
a.card{text-decoration:none;color:var(--navy);transition:border-color .15s ease}
a.card:hover{border-color:var(--field)}
.accent-bar{width:40px;height:4px;border-radius:2px;background:var(--accent,#3853A4)}

.band{margin-top:20px;background:var(--navy);color:var(--white);border-radius:var(--radius);padding:32px;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:16px 48px;align-items:center}
.band .eyebrow{color:var(--on-dark-muted);margin-bottom:8px}
.band p{color:var(--on-dark);font-size:17px;line-height:1.6}

/* Bloques de detalle (Servicios, Sectores) */
.detail{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(28px,4vw,48px);display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,380px),1fr));gap:32px 64px}
.detail + .detail{margin-top:24px}
.detail--top{border-top:4px solid var(--accent,#3853A4)}
.detail--dark{background:var(--navy);border:0;color:var(--white)}
.detail-intro{display:flex;flex-direction:column;gap:14px}
.detail-intro .h2{font-size:clamp(26px,2.8vw,34px);line-height:1.15}
.detail-intro p{font-size:17px;line-height:1.6;color:var(--slate)}
.detail--dark .detail-intro p{color:var(--on-dark)}
.detail--media{align-items:center}
.detail-figure{margin:0;border-radius:10px;overflow:hidden;background:#EEF1F5}
.detail-figure img{width:100%;height:auto}
.detail-lists{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:24px}
.list-title{font-family:var(--mono);font-size:13px;font-weight:500;letter-spacing:.08em;color:var(--muted);margin:0 0 12px}
.detail--dark .list-title{color:var(--on-dark-muted)}
.list{padding-left:20px;font-size:16px;line-height:1.75;color:var(--slate)}
.detail--dark .list{color:var(--on-dark)}

/* Galería de obra */
.build-gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:repeat(2,clamp(220px,22vw,300px));gap:16px}
.build-gallery figure{margin:0;border-radius:var(--radius);overflow:hidden;background:#E6EAF0}
.build-gallery img{width:100%;height:100%;object-fit:cover}
.bg-a{grid-column:1;grid-row:1}
.bg-b{grid-column:1;grid-row:2}
.bg-c{grid-column:2;grid-row:1 / span 2}
.bg-d{grid-column:3;grid-row:1 / span 2}
.build-facts{list-style:none;padding:0;margin:28px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:20px 32px}
.build-facts li{display:flex;flex-direction:column;gap:6px;padding-top:16px;border-top:3px solid var(--accent,#3853A4)}
.build-facts strong{font-size:18px}
.build-facts span{font-size:15px;line-height:1.5;color:var(--slate)}
@media (max-width:760px){
  .build-gallery{grid-template-columns:1fr 1fr;grid-template-rows:none}
  .bg-a,.bg-b{grid-column:1 / -1;grid-row:auto;aspect-ratio:16/9}
  .bg-c,.bg-d{grid-column:auto;grid-row:auto;aspect-ratio:3/4}
}

/* Valores */
.values{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:28px 32px;align-content:start}
.value{display:flex;flex-direction:column;gap:10px;padding-top:18px;border-top:3px solid var(--accent,#3853A4)}
.value h3{font-size:19px}

/* Pasos */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:20px;list-style:none;padding:0;margin:0}

/* Datos */
.facts{background:var(--navy);color:var(--white);border-radius:var(--radius);padding:clamp(28px,4vw,48px);display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:28px}
.facts dt{font-family:var(--mono);font-size:12px;color:var(--on-dark-muted);margin-bottom:8px}
.facts dd{margin:0;font-size:22px;font-weight:700}

/* Llamada a la acción */
.cta{padding:80px 0}
.cta .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:28px}
.cta-copy{display:flex;flex-direction:column;gap:12px;max-width:640px}
.cta .h2{font-size:clamp(28px,3.2vw,42px)}
.cta--light{background:var(--white);border-top:1px solid var(--line);padding:72px 0}

/* Formulario */
.form{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:clamp(24px,3vw,40px);display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field--full,.form .btn,.form-note,.check{grid-column:1/-1}
.field label{font-size:14px;font-weight:600}
.field input,.field select,.field textarea{font:inherit;font-size:16px;padding:12px 14px;border:1px solid var(--field);border-radius:6px;min-height:46px;background:var(--white);color:var(--navy);width:100%}
.field textarea{resize:vertical;min-height:140px}
.field input:focus,.field select:focus,.field textarea:focus{outline:3px solid #3853A4;outline-offset:1px;border-color:#3853A4}
.check{display:flex;gap:10px;align-items:flex-start}
.check input{width:20px;height:20px;margin:2px 0 0;flex:none}
.check label{font-size:14px;line-height:1.5;color:var(--slate)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-note{font-size:13px;color:var(--muted);line-height:1.5}
.notice{grid-column:1/-1;border-radius:8px;padding:14px 16px;font-size:15px;line-height:1.5}
.notice[hidden]{display:none}
.notice--ok{background:#E7F4E2;color:#24561A;border:1px solid #B9DDAE}
.notice--error{background:#FCE8E8;color:#8A1C1F;border:1px solid #F1BABC}

.contact-card{background:var(--navy);color:var(--white);border-radius:14px;padding:clamp(24px,3vw,40px);display:flex;flex-direction:column;gap:22px}
.contact-card dt{font-family:var(--mono);font-size:12px;color:var(--on-dark-muted);margin-bottom:6px}
.contact-card dd{margin:0;font-size:17px;line-height:1.5;color:var(--on-dark)}
.contact-card a{color:var(--white);text-decoration:none;font-size:20px;font-weight:700}
.contact-card a.small{font-size:17px;font-weight:600;color:#A9D9D4;text-decoration:underline}

/* Pie */
.site-footer{background:var(--navy-deep);color:var(--on-dark-muted);font-size:14px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:32px;padding-top:56px;padding-bottom:40px}
.footer-grid strong{color:var(--white);font-size:17px;display:block;margin-bottom:8px}
.footer-col{display:flex;flex-direction:column;gap:2px}
.footer-title{font-family:var(--mono);font-size:12px;letter-spacing:.08em;margin-bottom:6px}
.footer-col a{color:var(--on-dark);text-decoration:none;padding:6px 0}
.footer-col a:hover{color:var(--white);text-decoration:underline}
.footer-bottom{border-top:1px solid #22355A;padding-top:20px;padding-bottom:28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px}
.footer-bottom nav{display:flex;flex-wrap:wrap;gap:4px 24px}
.footer-bottom a{color:var(--on-dark-muted)}

/* Páginas legales */
.legal{max-width:820px;padding:72px 24px 96px;margin:0 auto}
.legal h1{font-size:clamp(32px,3.6vw,46px);margin-bottom:12px}
.legal .updated{font-size:14px;color:var(--muted);margin-bottom:40px}
.legal h2{font-size:22px;margin:40px 0 12px;letter-spacing:-.01em}
.legal p,.legal li{font-size:16px;line-height:1.7;color:var(--slate)}
.legal p + p{margin-top:12px}
.legal ul{padding-left:22px;margin-top:8px}
.legal dl{display:grid;grid-template-columns:max-content 1fr;gap:8px 24px;margin:16px 0 0}
.legal dt{font-weight:700}
.legal dd{margin:0;color:var(--slate)}
@media (max-width:560px){.legal dl{grid-template-columns:1fr}.legal dd{margin-bottom:8px}}

/* Selector de idioma */
.lang-switch{display:flex;gap:2px;list-style:none;margin:0;padding:0;font-family:var(--mono);font-size:12px}
.lang-switch a{display:block;padding:6px 7px;text-decoration:none;color:var(--slate);border-radius:6px}
.lang-switch a:hover{color:var(--navy);background:#EEF1F5}
.lang-switch a[aria-current="true"]{color:var(--navy);font-weight:700}
@media (max-width:960px){.nav{column-gap:6px}.lang-switch a{padding:6px 5px}.lang-switch{order:1;margin-left:auto}.nav-toggle{order:2;margin-left:0}.nav-links{order:3}.nav .nav-cta{order:4}}
@media (max-width:420px){.brand{gap:8px}.brand img{width:38px;height:36px}.brand-name{font-size:18px}}
@media (max-width:340px){.brand img{width:32px;height:30px}.brand-name{font-size:16px}.lang-switch a{padding:6px 3px}}