/* ==========================================================================
   NEVAZUL — Sistema de diseño
   Paleta: azul técnico oscuro + gris papel + acento azul tecnológico
   Tipografía: Plus Jakarta Sans (display) / Inter (texto)
   ========================================================================== */

:root{
  /* Color */
  --navy-900:#071D36;
  --navy-800:#0E2A4D;
  --navy-700:#173A62;
  --ink:#10182B;
  --paper:#F4F7FB;
  --paper-alt:#E9EFF6;
  --line:#C7D3E1;
  --line-dark:#2A4160;
  --accent:#2F6FE0;
  --accent-dim:#DCE7FA;
  --white:#FFFFFF;

  /* Tipografia */
  --font-display:'Plus Jakarta Sans', 'Inter', sans-serif;
  --font-body:'Inter', sans-serif;

  /* Layout */
  --container:1220px;
  --gutter:clamp(20px, 4vw, 56px);
  --radius:2px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  color:var(--navy-900);
  margin:0 0 .5em 0;
  line-height:1.15;
  font-weight:700;
  letter-spacing:-0.01em;
}
p{ margin:0 0 1em 0; }
p:last-child{ margin-bottom:0; }

h1{ font-size:clamp(2.35rem, 4.4vw, 3.9rem); }
h2{ font-size:clamp(1.7rem, 2.8vw, 2.45rem); }
h3{ font-size:1.28rem; }
.lede{ font-size:clamp(1.05rem, 1.6vw, 1.25rem); color:var(--navy-800); max-width:46ch; }

:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}

/* -------------------- Marca / wordmark -------------------- */
.wordmark{
  font-family:var(--font-display);
  font-weight:800;
  font-size:1.28rem;
  letter-spacing:-0.02em;
  color:var(--navy-900);
  display:inline-flex;
  align-items:center;
  gap:2px;
  flex-shrink:0;
}
.wordmark span{ color:var(--accent); }
.wordmark .logo-img{
  height:30px;
  width:auto;
  display:block;
  flex-shrink:0;
}
.wordmark.is-compact .logo-img{ height:24px; }
.wordmark small{
  font-family:var(--font-body);
  font-weight:600;
  font-size:.56rem;
  letter-spacing:.14em;
  color:var(--navy-700);
  margin-left:8px;
  align-self:center;
  border-left:1px solid var(--line);
  padding-left:8px;
}

/* -------------------- Header -------------------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(244,247,251,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.site-header .container{
  height:75px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav-main{ display:flex; align-items:center; gap:22px; }
.nav-main a{
  font-size:.92rem;
  font-weight:600;
  color:var(--navy-800);
  padding:6px 0;
  border-bottom:2px solid transparent;
  transition:border-color .15s ease, color .15s ease;
  white-space:nowrap;
}
.nav-main a:hover,
.nav-main a[aria-current="page"]{
  color:var(--navy-900);
  border-bottom-color:var(--accent);
}
.header-actions{ display:flex; align-items:center; gap:18px; }
.nav-toggle{
  display:none;
  width:40px; height:40px;
  border:1px solid var(--line);
  background:var(--white);
  align-items:center; justify-content:center;
  cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:""; display:block; width:18px; height:2px; background:var(--navy-900);
  position:relative; transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }

/* -------------------- Botones -------------------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 26px;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.92rem;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary{ background:var(--navy-900); color:var(--white); }
.btn-primary:hover{ background:var(--accent); }
.btn-ghost{
  background:transparent; color:var(--navy-900); border-color:var(--line-dark);
}
.btn-ghost:hover{ border-color:var(--accent); color:var(--accent); }
.btn-on-dark{ background:var(--accent); color:var(--white); }
.btn-on-dark:hover{ background:var(--white); color:var(--navy-900); }
.btn-outline-on-dark{ background:transparent; color:var(--white); border-color:rgba(255,255,255,.35); }
.btn-outline-on-dark:hover{ border-color:var(--white); }

/* -------------------- Marco técnico (motivo de marca) --------------------
   Escuadras en dos esquinas, como marcas de recorte en planos técnicos. */
.tech-frame{ position:relative; }
.tech-frame::before,
.tech-frame::after{
  content:""; position:absolute; width:22px; height:22px;
  border-color:var(--accent); border-style:solid; border-width:0;
  pointer-events:none;
}
.tech-frame::before{ top:-1px; left:-1px; border-top-width:2px; border-left-width:2px; }
.tech-frame::after{ bottom:-1px; right:-1px; border-bottom-width:2px; border-right-width:2px; }
.tech-frame-light::before,
.tech-frame-light::after{ border-color:rgba(255,255,255,.55); }

/* -------------------- Secciones -------------------- */
section{ padding:clamp(56px,8vw,104px) 0; }
.section-dark{ background:var(--navy-900); color:var(--white); }
.section-dark h2, .section-dark h3{ color:var(--white); }
/* Las tarjetas claras (.bento-item sin .is-dark) dentro de una sección oscura
   deben conservar texto oscuro; si no, el h3 hereda blanco-sobre-blanco. */
.section-dark .bento-item:not(.is-dark) h3{ color:var(--navy-900); }
.section-dark .bento-item:not(.is-dark) p{ color:var(--navy-800); }
.section-alt{ background:var(--paper-alt); }
.section-head{
  display:flex; justify-content:space-between; align-items:flex-end; gap:32px;
  margin-bottom:44px; flex-wrap:wrap;
}
.section-tag{
  font-size:.82rem; font-weight:600; color:var(--accent);
  margin:0 0 10px 0; letter-spacing:.01em;
}

/* -------------------- Hero -------------------- */
.hero{
  background:var(--navy-900); color:var(--white);
  position:relative; overflow:hidden;
  padding-top:clamp(64px,10vw,120px);
  padding-bottom:0;
}
.hero-grid{
  display:grid; grid-template-columns:1.05fr .95fr; gap:48px; align-items:center;
}
.hero-eyebrow{
  font-size:.82rem; font-weight:600; color:var(--accent-dim);
  margin-bottom:18px; display:flex; gap:10px; flex-wrap:wrap;
}
.hero-eyebrow span{
  border:1px solid rgba(255,255,255,.28); padding:5px 12px; border-radius:var(--radius);
}
.hero h1{ color:var(--white); max-width:18ch; }
@media (max-width:600px){ .hero h1{ max-width:none; } }
.hero .lede{ color:rgba(255,255,255,.78); margin:22px 0 34px; }
.hero-cta{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:56px; }
.hero-art{ position:relative; }
.hero-art svg{ width:100%; height:auto; display:block; }
.hero-foot{
  border-top:1px solid rgba(255,255,255,.14);
  padding-top:22px; padding-bottom:22px;
  display:flex; gap:40px; flex-wrap:wrap;
}
.hero-foot .stat b{ display:block; font-family:var(--font-display); font-size:1.5rem; color:var(--white); }
.hero-foot .stat span{ font-size:.82rem; color:rgba(255,255,255,.6); }

/* -------------------- Cabecera de página interior -------------------- */
.page-head{
  background:var(--navy-900); color:var(--white);
  padding:56px 0 64px;
}
.page-head .section-tag{ color:var(--accent-dim); }
.page-head h1{ color:var(--white); max-width:22ch; margin-bottom:14px; }
.page-head .lede{ color:rgba(255,255,255,.78); max-width:56ch; }
.breadcrumb{ font-size:.82rem; color:rgba(255,255,255,.5); margin-bottom:22px; }
.breadcrumb a{ color:rgba(255,255,255,.75); }
.breadcrumb a:hover{ color:var(--white); }

/* -------------------- Bento grid -------------------- */
.bento{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.bento-item{
  background:var(--paper);
  padding:32px;
  grid-column:span 2;
  position:relative;
}
.bento-item.is-wide{ grid-column:span 4; }
.bento-item.is-dark{ background:var(--navy-900); color:var(--white); }
.bento-item.is-dark h3{ color:var(--white); }
.bento-item.is-dark p{ color:rgba(255,255,255,.72); }
.bento-item p{ color:var(--navy-800); }
.bento-item[href]{ cursor:pointer; text-decoration:none; transition:background .15s ease; }
.bento-item[href]:hover{ background:var(--paper-alt); }
.bento-item.is-dark[href]:hover{ background:var(--navy-800); }
.bento-num{
  font-family:var(--font-display); font-size:.78rem; font-weight:700;
  color:var(--accent); margin-bottom:16px; letter-spacing:.02em;
}
@media (max-width:860px){
  .bento{ grid-template-columns:repeat(2,1fr); }
  .bento-item{ grid-column:span 2; }
  .bento-item.is-wide{ grid-column:span 2; }
}

/* -------------------- Tarjetas de servicio -------------------- */
.service-list{ display:flex; flex-direction:column; }
.service-row{
  display:grid; grid-template-columns:.9fr 1.6fr; gap:40px;
  padding:38px 0; border-top:1px solid var(--line);
}
.service-list .service-row:last-child{ border-bottom:1px solid var(--line); }
.service-row h3{ margin-bottom:10px; }
.service-row .service-index{
  font-family:var(--font-display); color:var(--line-dark); font-weight:700; font-size:.85rem;
}
.service-detail-list{ margin-top:16px; display:grid; gap:8px; }
.service-detail-list li{
  padding-left:18px; position:relative; color:var(--navy-800); font-size:.95rem;
}
.service-detail-list li::before{
  content:""; position:absolute; left:0; top:.6em; width:6px; height:1px; background:var(--accent);
}

/* -------------------- Grid de sectores -------------------- */
.sector-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.sector-card{ background:var(--paper); padding:36px; scroll-margin-top:100px; }
.sector-card h3{ margin-bottom:14px; }
.sector-card dl{ margin:18px 0 0; display:grid; gap:12px; }
.sector-card dt{ font-size:.76rem; font-weight:700; text-transform:none; color:var(--accent); margin-bottom:2px; }
.sector-card dd{ margin:0; color:var(--navy-800); font-size:.94rem; }
@media (max-width:760px){ .sector-grid{ grid-template-columns:1fr; } }

/* -------------------- Proyectos / casos -------------------- */
.case{
  border:1px solid var(--line); background:var(--white);
  margin-bottom:1px;
}
.case-head{
  display:flex; justify-content:space-between; align-items:center; gap:20px;
  padding:26px 32px; cursor:pointer; background:var(--white);
  flex-wrap:wrap;
}
.case-head:hover{ background:var(--paper-alt); }
.case-head h3{ margin:0; }
.case-head .case-sector{ font-size:.82rem; color:var(--accent); font-weight:700; }
.case-body{
  padding:0 32px 32px; display:grid; grid-template-columns:repeat(3,1fr); gap:28px;
  border-top:1px solid var(--line);
  padding-top:26px;
}
.case-body div span{ display:block; font-size:.76rem; font-weight:700; color:var(--line-dark); margin-bottom:6px; }
.case-body div p{ font-size:.94rem; color:var(--navy-800); margin:0; }
@media (max-width:760px){ .case-body{ grid-template-columns:1fr; } }

/* -------------------- Experiencia / clientes -------------------- */
.clients-row{
  display:grid; grid-template-columns:repeat(5,1fr); border-top:1px solid var(--line); border-left:1px solid var(--line);
}
.clients-row div{
  display:flex; align-items:center; justify-content:center;
  border-right:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:22px 20px; min-height:96px;
  background:var(--paper);
  transition:background .15s ease;
}
.clients-row div:hover{ background:var(--paper-alt); }
.clients-row img{
  max-width:120px; max-height:48px;
  width:auto; height:auto;
  filter:grayscale(100%);
  opacity:.75;
  transition:filter .2s ease, opacity .2s ease;
}
.clients-row div:hover img{ filter:grayscale(0%); opacity:1; }
@media (max-width:760px){ .clients-row{ grid-template-columns:repeat(2,1fr);} }

/* -------------------- Franja CTA -------------------- */
.cta-strip{
  background:var(--navy-900); color:var(--white);
  padding:clamp(48px,7vw,80px) 0;
}
.cta-strip .container{
  display:flex; justify-content:space-between; align-items:center; gap:32px; flex-wrap:wrap;
}
.cta-strip h2{ color:var(--white); margin:0; max-width:22ch; }

/* -------------------- Footer -------------------- */
.site-footer{ background:var(--navy-900); color:rgba(255,255,255,.7); padding:64px 0 28px; }
.footer-grid{
  display:grid; grid-template-columns:1.3fr 1fr 1fr 1fr; gap:40px;
  padding-bottom:44px; border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-grid h4{ color:var(--white); font-size:.82rem; margin-bottom:16px; }
.footer-grid ul{ display:grid; gap:10px; }
.footer-grid a{ font-size:.92rem; color:rgba(255,255,255,.7); }
.footer-grid a:hover{ color:var(--white); }
.footer-bottom{
  padding-top:24px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  font-size:.82rem; color:rgba(255,255,255,.5);
}
@media (max-width:860px){ .footer-grid{ grid-template-columns:1fr 1fr; } }

/* -------------------- Formulario de contacto -------------------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); }
.contact-panel{ background:var(--white); padding:44px; }
.contact-panel.is-dark{ background:var(--navy-900); color:var(--white); }
.contact-panel.is-dark h3, .contact-panel.is-dark a{ color:var(--white); }
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:.82rem; font-weight:600; color:var(--navy-800); margin-bottom:6px; }
.field input, .field select, .field textarea{
  width:100%; border:1px solid var(--line); background:var(--paper);
  padding:12px 14px; font-family:var(--font-body); font-size:.95rem; color:var(--ink);
  border-radius:var(--radius);
}
.field input:focus, .field select:focus, .field textarea:focus{ outline:2px solid var(--accent); outline-offset:1px; border-color:var(--accent); }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-status{
  margin-top:18px; padding:14px 16px; font-size:.9rem; color:var(--navy-800);
  background:var(--paper-alt); border:1px solid var(--line); border-left:3px solid var(--line-dark);
}
.form-status.is-success{ border-left-color:var(--accent); }
.form-status.is-error{ border-left-color:#A6432D; }
.contact-detail{ display:flex; gap:14px; padding:18px 0; border-top:1px solid rgba(255,255,255,.14); }
.contact-detail:first-of-type{ border-top:none; }
.contact-detail span{ font-size:.76rem; color:rgba(255,255,255,.55); display:block; margin-bottom:4px; }
.contact-detail strong{ font-size:1.02rem; font-weight:600; }
@media (max-width:860px){ .contact-grid{ grid-template-columns:1fr; } .field-row{ grid-template-columns:1fr; } }

/* -------------------- Espacios reservados para foto / video --------------------
   Marcador visual (no es un error): indica dónde va contenido real más adelante.
   Basta con reemplazar el <div class="media-slot"> por un <img> o <video>. */
.media{ margin:0; }
.media-slot{
  position:relative;
  aspect-ratio:var(--ratio, 4/3);
  background-image:repeating-linear-gradient(135deg, var(--paper-alt), var(--paper-alt) 9px, var(--line) 9px, var(--line) 10px);
  border:1px dashed var(--line-dark);
  display:flex; align-items:center; justify-content:center;
  padding:20px;
}
.media-slot.is-on-dark{
  background-image:repeating-linear-gradient(135deg, var(--navy-800), var(--navy-800) 9px, var(--line-dark) 9px, var(--line-dark) 10px);
  border-color:rgba(255,255,255,.35);
}
.media-slot-label{
  background:var(--white);
  border:1px solid var(--line);
  padding:10px 16px;
  max-width:88%;
  font-size:.82rem;
  font-weight:600;
  color:var(--navy-800);
  text-align:center;
  line-height:1.4;
}
.media-slot.is-on-dark .media-slot-label{ background:var(--navy-900); color:var(--white); border-color:rgba(255,255,255,.3); }

/* Espacio ya con foto real: mismo recuadro/proporción que .media-slot, contenido recortado prolijo. */
.media-fill{
  position:relative;
  aspect-ratio:var(--ratio, 4/3);
  overflow:hidden;
}
.media-fill img{
  width:100%; height:100%;
  object-fit:cover;
  display:block;
}
.media-slot-label span{ display:block; font-weight:400; font-size:.78rem; color:var(--line-dark); margin-top:4px; }
.media-slot.is-on-dark .media-slot-label span{ color:rgba(255,255,255,.55); }
figure.media figcaption{ font-size:.82rem; color:var(--navy-800); margin-top:10px; }
.media-slot.is-on-dark ~ figcaption,
.section-dark figure.media figcaption{ color:rgba(255,255,255,.6); }

/* -------------------- Utilidades de layout -------------------- */
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:start; }
.stack{ display:grid; gap:18px; }
.mt-lg{ margin-top:48px; }
.divider{ height:1px; background:var(--line); border:0; margin:48px 0; }

@media (max-width:960px){
  .two-col{ grid-template-columns:1fr; }
  .service-row{ grid-template-columns:1fr; gap:14px; }
  .hero-grid{ grid-template-columns:1fr; }
}

@media (max-width:1180px){
  .nav-main{
    position:fixed; top:75px; left:0; right:0; height:calc(100vh - 75px);
    background:var(--paper);
    flex-direction:column; align-items:flex-start; padding:28px var(--gutter);
    gap:4px; transform:translateY(-8px); opacity:0; pointer-events:none;
    transition:opacity .18s ease, transform .18s ease; overflow-y:auto;
    z-index:40;
  }
  .nav-main a{ width:100%; padding:14px 0; border-bottom:1px solid var(--line); }
  body.nav-open .nav-main{ transform:translateY(0); opacity:1; pointer-events:auto; }
  .nav-toggle{ display:flex; }
  .header-actions .btn-primary{ display:none; }
  body.nav-open .nav-toggle span{ background:transparent; }
  body.nav-open .nav-toggle span::before{ top:0; transform:rotate(45deg); }
  body.nav-open .nav-toggle span::after{ top:0; transform:rotate(-45deg); }
}

@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}