/* ===== Variables ===== */
:root {
  --ink: #0B1220;
  --ink-2: #121B31;
  --ink-3: #1B2642;
  --paper: #F7F5F0;
  --white: #FFFFFF;
  --gold: #C9A86A;
  --gold-soft: #E6D3A8;
  --text: #1B2333;
  --muted: #667085;
  --line: #E4E0D6;
  --radius: 16px;
  --shadow: 0 24px 50px -24px rgba(11, 18, 32, .35);
  --font-head: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --container: 1160px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* ===== Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.is-loading { overflow: hidden; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
p { margin: 0 0 1rem; }
h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 0 0 1rem;
}
h1 em, h2 em, .brand__name em, .preloader__name em { font-style: italic; color: var(--gold); }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); }
h3 { font-size: 1.35rem; }

.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.container--narrow { width: min(100% - 2.5rem, 820px); }

.skip-link {
  position: absolute; left: -999px; top: 8px; z-index: 2000;
  background: var(--gold); color: var(--ink); padding: .6rem 1rem; border-radius: 8px;
}
.skip-link:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

/* ===== Preloader ===== */
#preloader {
  position: fixed; inset: 0; z-index: 1000;
  background: var(--ink); color: #fff;
  display: grid; place-items: center;
  transition: opacity .7s var(--ease), visibility .7s;
}
#preloader.is-done { opacity: 0; visibility: hidden; }
.preloader__box { display: grid; gap: 1.2rem; justify-items: center; text-align: center; }
.preloader__logo { width: 76px; height: 76px; animation: float 2.4s ease-in-out infinite; }
.preloader__name { font-family: var(--font-head); font-size: 1.4rem; }
.preloader__bar { width: 190px; height: 2px; background: rgba(255,255,255,.14); border-radius: 2px; overflow: hidden; }
.preloader__bar span { display: block; height: 100%; width: 0; background: var(--gold); transition: width .3s ease; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

/* Barra de progreso de scroll */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 100%; z-index: 900;
  background: var(--gold); transform-origin: left; transform: scaleX(0);
}

/* ===== Botones ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .95rem 1.6rem; border-radius: 999px;
  font-weight: 600; font-size: .95rem; border: 1px solid transparent;
  cursor: pointer; transition: transform .25s var(--ease), background .25s, color .25s, border-color .25s;
}
.btn:hover { transform: translateY(-2px); }
.btn--gold { background: var(--gold); color: var(--ink); }
.btn--gold:hover { background: var(--gold-soft); }
.btn--ghost { border-color: rgba(255,255,255,.3); color: #fff; }
.btn--ghost:hover { border-color: var(--gold); color: var(--gold); }
.btn--sm { padding: .65rem 1.2rem; font-size: .88rem; }
.btn--block { width: 100%; }

/* ===== Header ===== */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 800;
  padding: 1rem 0; transition: padding .3s, box-shadow .3s;
}
/* Fondo de vidrio en un pseudo-elemento: así el header NO tiene
   backdrop-filter y el menú móvil (position: fixed) sigue anclado a la pantalla */
.header::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(11, 18, 32, .9);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  opacity: 0; transition: opacity .3s;
}
.header.is-scrolled {
  padding: .6rem 0; box-shadow: 0 8px 30px -12px rgba(0,0,0,.5);
}
.header.is-scrolled::before { opacity: 1; }

.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: flex; align-items: center; gap: .75rem; color: #fff; }
.brand__logo { width: 44px; height: 44px; object-fit: contain; }
.brand__name { font-family: var(--font-head); font-size: 1.2rem; }
.nav ul { display: flex; gap: 1.8rem; }
.nav a { color: rgba(255,255,255,.75); font-size: .92rem; transition: color .2s; position: relative; }
.nav a:hover, .nav a.is-active { color: #fff; }
.nav a.is-active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px; background: var(--gold);
}
.nav__cta-mobile { display: none; }
.burger { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 11px; right: 11px; height: 2px; background: #fff; transition: transform .3s, top .3s; }
.burger span:first-child { top: 18px; }
.burger span:last-child { top: 26px; }
.burger[aria-expanded="true"] span:first-child { top: 22px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 22px; transform: rotate(-45deg); }
/* Capa oscura detrás del menú móvil */
.nav-overlay {
  position: fixed; inset: 0; z-index: 790; /* debajo del header (800), encima del resto */
  background: rgba(5, 9, 18, .6);
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
  opacity: 0; visibility: hidden;
  transition: opacity .4s var(--ease), visibility .4s;
}
.nav-overlay.is-visible { opacity: 1; visibility: visible; }

/* ===== Hero ===== */
.hero {
  position: relative; color: #fff; overflow: hidden;
  padding: 10rem 0 6rem;
  background:
    radial-gradient(60% 60% at 85% 20%, rgba(201,168,106,.16), transparent 70%),
    radial-gradient(50% 50% at 0% 100%, rgba(72,102,180,.18), transparent 70%),
    var(--ink);
}
.hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; }
.eyebrow {
  font-size: .78rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--gold); font-weight: 600; margin-bottom: 1.2rem;
}
.eyebrow--dark { color: #9C7F45; }
.hero h1 { font-size: clamp(2.5rem, 5.4vw, 4.3rem); }
.hero__lead { font-size: 1.15rem; color: rgba(255,255,255,.72); max-width: 54ch; margin-bottom: 2rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .9rem; }

/* Diagrama de red */
.net { width: 100%; color: rgba(201,168,106,.35); }
.net__ring { stroke: rgba(201,168,106,.35); stroke-width: 1; animation: pulse 3.5s ease-in-out infinite; transform-origin: 260px 230px; }
.net__core { fill: var(--gold); }
.net__nodes circle { fill: var(--ink-3); stroke: var(--gold); stroke-width: 1.5; animation: blink 3s ease-in-out infinite; }
.net__nodes circle:nth-child(2n) { animation-delay: .8s; }
.net__nodes circle:nth-child(3n) { animation-delay: 1.6s; }
.net__lines line { stroke-dasharray: 4 6; animation: dash 18s linear infinite; }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: .9; } 50% { transform: scale(1.15); opacity: .3; } }
@keyframes blink { 0%,100% { fill: var(--ink-3); } 50% { fill: var(--gold); } }
@keyframes dash { to { stroke-dashoffset: -200; } }

/* ===== Sectores ===== */
.sectors { background: var(--ink-2); color: #fff; padding: 2.5rem 0; border-top: 1px solid rgba(255,255,255,.06); }
.sectors__title { text-align: center; font-size: .78rem; letter-spacing: .18em; text-transform: uppercase; color: rgba(255,255,255,.5); margin-bottom: 1.6rem; }
.sectors__list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.sectors__list li { display: flex; align-items: center; gap: .8rem; justify-content: center; color: rgba(255,255,255,.85); font-size: .95rem; }
.sectors__list svg { width: 26px; height: 26px; color: var(--gold); flex: none; }

/* ===== Secciones ===== */
.section { padding: 6.5rem 0; }
.section--white { background: var(--white); }
.section--dark { background: var(--ink); color: #fff; }
.section__head { max-width: 680px; margin-bottom: 3.2rem; }
.section__head p:not(.eyebrow) { color: var(--muted); font-size: 1.05rem; }
.section__head--light p:not(.eyebrow) { color: rgba(255,255,255,.7); }

/* Servicios */
.service {
  display: grid; grid-template-columns: 70px 1fr 1.3fr; gap: 2rem;
  padding: 2rem 0; border-top: 1px solid var(--line); align-items: start;
  transition: padding-left .35s var(--ease);
}
.service:last-child { border-bottom: 1px solid var(--line); }
.service:hover { padding-left: 1rem; }
.service__num { font-family: var(--font-head); color: var(--gold); font-size: 1.6rem; }
.service h3 { margin: 0; }
.service p { color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.tags li {
  font-size: .78rem; padding: .3rem .8rem; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); background: rgba(255,255,255,.5);
}

/* Proyectos */
.cases { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
.case {
  padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper); transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
}
.case:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--gold); }
.case__sector { display: inline-block; font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: #9C7F45; font-weight: 600; margin-bottom: .8rem; }
.case p { color: var(--muted); }

/* Método */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; counter-reset: s; }
.steps li { padding: 1.8rem; border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); background: rgba(255,255,255,.03); }
.steps__n {
  display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--gold); color: var(--gold); font-family: var(--font-head); margin-bottom: 1.1rem;
}
.steps p { color: rgba(255,255,255,.68); font-size: .95rem; margin: 0; }

/* Diagnóstico */
.diag {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center;
  padding: clamp(2rem, 5vw, 4rem); border-radius: 24px; color: #fff;
  background: radial-gradient(70% 90% at 100% 0%, rgba(201,168,106,.22), transparent 70%), var(--ink-2);
  box-shadow: var(--shadow);
}
.diag p:not(.eyebrow) { color: rgba(255,255,255,.75); }
.diag__list li { position: relative; padding: .85rem 0 .85rem 2rem; border-bottom: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.88); }
.diag__list li:last-child { border-bottom: 0; }
.diag__list li::before {
  content: ""; position: absolute; left: 0; top: 1.25rem; width: 10px; height: 6px;
  border-left: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(-45deg);
}

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 1.2rem 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--gold); font-size: 1.4rem; line-height: 1; transition: transform .3s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); margin: .9rem 0 0; }

/* Contacto */
.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 4rem; align-items: start; }
.contact__info > p:not(.eyebrow) { color: var(--muted); }
.contact__list { margin-top: 2rem; display: grid; gap: 1.2rem; }
.contact__list li { display: grid; gap: .1rem; }
.contact__list span { font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; color: #9C7F45; font-weight: 600; }
.contact__list a:hover { color: #9C7F45; }
.form { background: var(--white); padding: 2rem; border-radius: 20px; border: 1px solid var(--line); box-shadow: var(--shadow); display: grid; gap: 1.1rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form label { display: grid; gap: .4rem; font-size: .85rem; font-weight: 500; }
.form input, .form select, .form textarea {
  font: inherit; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: 10px; background: var(--paper);
  transition: border-color .2s, box-shadow .2s;
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,168,106,.25);
}
.hp { position: absolute; left: -9999px; }
.form__status { margin: 0; font-size: .9rem; min-height: 1.4em; }
.form__status.is-ok { color: #227a4b; }
.form__status.is-error { color: #b3342f; }

/* Footer */
.footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 3.5rem 0 2rem; }
.footer__inner { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; }
.footer__brand { display: flex; gap: .9rem; align-items: center; }
.footer__brand strong { color: #fff; font-family: var(--font-head); font-size: 1.15rem; font-weight: 500; }
.footer__brand strong em { font-style: italic; color: var(--gold); }
.footer__brand p { margin: 0; font-size: .9rem; }
.footer__links { display: flex; gap: 1.6rem; font-size: .9rem; }
.footer__links a:hover { color: var(--gold); }
.footer__copy { grid-column: 1 / -1; margin: 1rem 0 0; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.1); font-size: .82rem; }

/* Botones flotantes */
.float-wa, .to-top {
  position: fixed; right: 1.3rem; z-index: 700; width: 52px; height: 52px; border-radius: 50%;
  display: grid; place-items: center; border: 0; cursor: pointer; box-shadow: 0 10px 25px -8px rgba(0,0,0,.45);
  transition: transform .25s var(--ease), opacity .3s;
}
.float-wa { bottom: 1.3rem; background: #25D366; color: #fff; }
.float-wa svg { width: 28px; height: 28px; }
.to-top { bottom: 5rem; background: var(--ink-3); color: var(--gold); opacity: 0; pointer-events: none; }
.to-top svg { width: 22px; height: 22px; }
.to-top.is-visible { opacity: 1; pointer-events: auto; }
.float-wa:hover, .to-top:hover { transform: translateY(-3px); }

/* ===== Animaciones de aparición ===== */
[data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); transition-delay: var(--d, 0s); }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .hero { padding: 8.5rem 0 4.5rem; }
  .hero__grid, .diag, .contact { grid-template-columns: 1fr; }
  .hero__visual { max-width: 380px; margin-inline: auto; }
  .sectors__list { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .cases { grid-template-columns: 1fr; }
  .service { grid-template-columns: 50px 1fr; }
  .service > div { grid-column: 2; }

  .header__cta { display: none; }
  .burger { display: block; }
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(320px, 86vw); background: var(--ink);
    padding: 6rem 2rem 2rem; transform: translateX(100%); transition: transform .4s var(--ease);
    box-shadow: -20px 0 40px -20px rgba(0,0,0,.6);
  }
  .nav.is-open { transform: none; }
  .nav ul { flex-direction: column; gap: 1.3rem; }
  .nav a { font-size: 1.05rem; }
  .nav__cta-mobile { display: block; margin-top: 1rem; }
  .burger { position: relative; z-index: 10; }
}
@media (max-width: 560px) {
  .section { padding: 4.5rem 0; }
  .sectors__list { grid-template-columns: 1fr; justify-items: start; }
  .sectors__list li { justify-content: flex-start; }
  .steps, .form__row { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
  .brand__name { font-size: 1.05rem; }
}

/* ===== Accesibilidad: menos movimiento ===== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}