/* ==========================================================================
   Umbral · Web 3D — estilos
   Marca: fondo abismo, oro (umbral), verde (dentro / en vivo)
   ========================================================================== */

:root {
  --bg: #0A0F12;
  --bg-2: #0E1417;
  --surface: #131C1F;
  --glass: rgba(19, 28, 31, .58);
  --ink: #E8EDEA;
  --muted: #8FA39C;
  --line: #26332F;
  --line-2: #1B2629;
  --gold: #E7B368;
  --gold-deep: #C0821F;
  --gold-soft: rgba(231, 179, 104, .16);
  --on-gold: #17120A;
  --live: #5FBE97;
  --live-soft: rgba(95, 190, 151, .16);
  --ice: #CFE6FF;
  --danger: #D9846E;

  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-sans: "Manrope", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Menlo, monospace;

  --maxw: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 18px;
  --ease: cubic-bezier(.22, 1, .36, 1);

  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

img, svg { max-width: 100%; display: block; }
a { color: inherit; }
b, strong { font-weight: 600; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 400; text-wrap: balance; }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.mono { font-family: var(--font-mono); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: 16px; top: -64px; z-index: 100;
  background: var(--gold); color: var(--on-gold);
  padding: 10px 14px; border-radius: 8px; font-weight: 600; text-decoration: none;
  transition: top .2s;
}
.skip:focus { top: 16px; }

/* --------------------------------------------------------------------------
   Capas fijas: escena 3D, viñeta, barra de progreso, loader
   -------------------------------------------------------------------------- */

#scene {
  position: fixed; inset: 0; z-index: 0;
  width: 100%; height: 100%; display: block;
}

.vignette {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 40%, transparent 48%, rgba(10, 15, 18, .62) 100%),
    linear-gradient(180deg, rgba(10, 15, 18, .35) 0%, transparent 18%);
}

.progress {
  position: fixed; left: 0; top: 0; z-index: 40;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold));
  transform-origin: 0 50%; transform: scaleX(0);
  pointer-events: none;
}

#loader {
  position: fixed; inset: 0; z-index: 60;
  background: var(--bg);
  display: grid; place-items: center;
  transition: opacity .9s var(--ease), visibility .9s;
  /* Red de seguridad: aunque ningún script llegue a ejecutarse, el loader se retira solo */
  animation: loader-timeout .9s var(--ease) 4.5s forwards;
}
#loader.is-done { opacity: 0; visibility: hidden; }
@keyframes loader-timeout { to { opacity: 0; visibility: hidden; } }

/* Sin WebGL: la página sigue siendo legible sobre un fondo estático */
body.no-webgl #scene { display: none; }
body.no-webgl {
  background:
    radial-gradient(60% 50% at 70% 30%, rgba(231, 179, 104, .18), transparent 70%),
    radial-gradient(50% 40% at 30% 80%, rgba(95, 190, 151, .10), transparent 70%),
    var(--bg);
}
.loader__inner { display: grid; justify-items: center; gap: 22px; }
.loader__mark { width: 60px; height: 60px; color: var(--gold); }
.loader__word {
  font-family: var(--font-display); font-size: 1.6rem; letter-spacing: .04em; color: var(--ink);
}
.loader__bar { width: 140px; height: 1px; background: var(--line); overflow: hidden; }
.loader__bar i {
  display: block; height: 100%; width: 40%;
  background: var(--gold);
  animation: load 1.3s var(--ease) infinite;
}
@keyframes load { from { transform: translateX(-100%); } to { transform: translateX(260%); } }

/* --------------------------------------------------------------------------
   Navegación
   -------------------------------------------------------------------------- */

.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 30;
  padding-top: env(safe-area-inset-top, 0px);
  transition: background .45s, border-color .45s, backdrop-filter .45s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(10, 15, 18, .74);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line-2);
}
.nav__inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 16px var(--gutter);
  display: flex; align-items: center; gap: 28px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none;
  font-family: var(--font-display); font-size: 1.55rem; letter-spacing: .01em;
}
.brand svg { width: 30px; height: 30px; }
.nav__menu {
  display: flex; align-items: center; gap: 28px;
  margin-left: auto;
}
.nav__links { display: flex; gap: 26px; list-style: none; padding: 0; margin: 0; }
.nav__links a {
  text-decoration: none; color: var(--muted);
  font-size: .92rem; font-weight: 500;
  transition: color .25s;
}
.nav__links a:hover { color: var(--ink); }
.nav__toggle {
  display: none;
  margin-left: auto;
  width: 44px; height: 44px; border-radius: 10px;
  border: 1px solid var(--line); background: rgba(19, 28, 31, .6);
  color: var(--ink); cursor: pointer;
  place-items: center;
}
.nav__toggle span {
  display: block; width: 18px; height: 1.5px; background: currentColor;
  position: relative; transition: transform .3s, background .3s;
}
.nav__toggle span::before, .nav__toggle span::after {
  content: ""; position: absolute; left: 0; width: 100%; height: 1.5px; background: currentColor;
  transition: transform .3s, top .3s;
}
.nav__toggle span::before { top: -6px; }
.nav__toggle span::after { top: 6px; }
.nav__toggle[aria-expanded="true"] span { background: transparent; }
.nav__toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav__toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

@media (max-width: 900px) {
  .nav__toggle { display: grid; }
  .nav__menu {
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 8px;
    padding: 12px var(--gutter) 22px;
    background: rgba(10, 15, 18, .94);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line-2);
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: transform .35s var(--ease), opacity .3s, visibility .3s;
  }
  .nav__menu.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav__links { flex-direction: column; gap: 0; }
  .nav__links a { display: block; padding: 12px 0; font-size: 1.05rem; border-bottom: 1px solid var(--line-2); }
  .nav__menu .btn { justify-content: center; margin-top: 10px; }
}

/* --------------------------------------------------------------------------
   Tipografía y componentes base
   -------------------------------------------------------------------------- */

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

.eyebrow {
  font-family: var(--font-mono);
  font-size: .76rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--gold);
  display: flex; align-items: center; gap: 12px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 1px; background: var(--gold); opacity: .7;
}

.h1 {
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 7.2vw, 6.4rem);
  line-height: .98; letter-spacing: -.012em;
  max-width: 12ch;
}
.h2 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.4vw, 3.7rem);
  line-height: 1.04; letter-spacing: -.01em;
  max-width: 20ch;
}
.h1 em, .h2 em, .statement em {
  font-style: italic; color: var(--gold);
}
.h3 {
  font-family: var(--font-display);
  font-size: 1.6rem; line-height: 1.15;
}
.lead {
  font-size: clamp(1.05rem, 1.4vw, 1.22rem);
  color: var(--muted); max-width: 56ch;
}
.lead b { color: var(--ink); }
.muted { color: var(--muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 26px; border-radius: 999px;
  font-weight: 600; font-size: .98rem; text-decoration: none;
  border: 1px solid transparent;
  transition: transform .35s var(--ease), background .3s, border-color .3s, box-shadow .3s;
  will-change: transform;
}
.btn--gold {
  background: linear-gradient(180deg, #F0C27A, var(--gold) 55%, var(--gold-deep));
  color: var(--on-gold);
  box-shadow: 0 10px 40px -12px rgba(231, 179, 104, .55), inset 0 1px 0 rgba(255, 255, 255, .35);
}
.btn--gold:hover { box-shadow: 0 16px 50px -12px rgba(231, 179, 104, .75), inset 0 1px 0 rgba(255, 255, 255, .35); }
.btn--ghost {
  background: rgba(19, 28, 31, .45);
  border-color: var(--line);
  color: var(--ink);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.btn--ghost:hover { border-color: var(--gold); }
.btn svg { width: 18px; height: 18px; }

.live {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--live);
}
.live i {
  width: 8px; height: 8px; border-radius: 50%; background: var(--live);
  box-shadow: 0 0 0 0 rgba(95, 190, 151, .6);
  animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(95, 190, 151, .6); }
  100% { box-shadow: 0 0 0 12px rgba(95, 190, 151, 0); }
}

.glass {
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(1.25);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  border: 1px solid rgba(231, 179, 104, .14);
  border-radius: var(--radius);
  box-shadow: 0 40px 90px -40px rgba(0, 0, 0, .85), inset 0 1px 0 rgba(255, 255, 255, .05);
}

/* Sombra suave detrás de bloques de texto para leer sobre la escena */
.dim {
  position: relative;
}
.dim::before {
  content: ""; position: absolute; z-index: -1;
  inset: -40px -60px;
  background: radial-gradient(60% 60% at 40% 50%, rgba(10, 15, 18, .78), rgba(10, 15, 18, 0) 100%);
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Secciones
   -------------------------------------------------------------------------- */

main { position: relative; z-index: 2; overflow-x: clip; }

.section {
  position: relative;
  padding-block: clamp(96px, 14vh, 170px);
}
.section__head {
  display: grid; gap: 22px;
  margin-bottom: clamp(40px, 6vh, 72px);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding-block: 140px 110px;
}
.hero__inner {
  display: grid; gap: 28px;
  max-width: 720px;
  margin-inline: auto 0;
  padding-inline: var(--gutter);
  width: 100%;
}
.hero .container { max-width: var(--maxw); }
.hero__copy { display: grid; gap: 28px; max-width: 700px; position: relative; z-index: 1; }
.hero__copy > * { text-shadow: 0 2px 28px rgba(10, 15, 18, .9), 0 0 2px rgba(10, 15, 18, .6); }
.nav__links a { text-shadow: 0 1px 14px rgba(10, 15, 18, .9); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__live {
  display: inline-flex; align-items: center; gap: 16px;
  padding: 10px 16px; border-radius: 999px;
  width: max-content; max-width: 100%;
  font-size: .9rem; color: var(--muted);
}
.hero__live b { color: var(--ink); font-weight: 600; }
.h1 .word { display: inline-block; will-change: transform, opacity; }

.scroll-hint {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
  display: grid; justify-items: center; gap: 10px;
  text-decoration: none; color: var(--muted);
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase;
}
.scroll-hint i {
  width: 1px; height: 46px; background: linear-gradient(180deg, var(--gold), transparent);
  animation: hint 2.2s var(--ease) infinite;
  transform-origin: top;
}
@keyframes hint { 0% { transform: scaleY(0); opacity: 0; } 30% { opacity: 1; } 100% { transform: scaleY(1); opacity: 0; } }

/* El problema */
.problem {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(32px, 6vw, 96px); align-items: start;
}
.problem__list { list-style: none; padding: 0; margin: 0; display: grid; }
.problem__list li {
  display: grid; grid-template-columns: 28px 1fr; gap: 18px; align-items: start;
  padding: 22px 0; border-top: 1px solid var(--line);
  font-size: 1.08rem; color: var(--ink);
}
.problem__list li:last-child { border-bottom: 1px solid var(--line); }
.problem__list li i {
  font-style: normal; color: var(--danger); font-family: var(--font-mono); font-size: 1rem; line-height: 1.75;
}

/* La solución: tres puertas */
.doors { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.door {
  --door-light: var(--gold);
  padding: 30px 28px 32px;
  display: grid; gap: 16px; align-content: start;
  position: relative; overflow: hidden;
  transition: transform .5s var(--ease), border-color .4s;
}
.door::before {
  content: ""; position: absolute; left: 28px; right: 28px; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--door-light), transparent);
  opacity: .9;
}
.door::after {
  content: ""; position: absolute; left: 50%; top: -60px; width: 220px; height: 120px;
  transform: translateX(-50%);
  background: radial-gradient(50% 50% at 50% 50%, color-mix(in srgb, var(--door-light) 26%, transparent), transparent 70%);
  pointer-events: none;
}
.door:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--door-light) 35%, transparent); }
.door--gold { --door-light: var(--gold); }
.door--live { --door-light: var(--live); }
.door--ice { --door-light: var(--ice); }
.door__icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  color: var(--door-light);
  background: color-mix(in srgb, var(--door-light) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--door-light) 28%, transparent);
}
.door__icon svg { width: 22px; height: 22px; }
.door p { color: var(--muted); font-size: .98rem; }
.door__tag {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--door-light);
}
.solution__note {
  margin-top: 34px;
  display: grid; gap: 8px;
  color: var(--muted); max-width: 70ch;
}
.solution__note b { color: var(--ink); }

/* En tiempo real */
.realtime { display: grid; gap: 40px; max-width: 600px; }
.panel { padding: 0; overflow: hidden; }
.panel__head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px; border-bottom: 1px solid var(--line-2);
}
.panel__title { font-weight: 600; font-size: .95rem; }
.panel__rows { list-style: none; margin: 0; padding: 6px 0; }
.panel__rows li {
  display: grid; grid-template-columns: 1.1fr 1fr auto auto; gap: 14px; align-items: center;
  padding: 13px 22px;
  border-bottom: 1px solid var(--line-2);
  font-size: .94rem;
  animation: rowin .7s var(--ease) both;
}
.panel__rows li:last-child { border-bottom: 0; }
.panel__rows .who { font-weight: 600; }
.panel__rows .where { color: var(--muted); }
.panel__rows .when { font-family: var(--font-mono); font-size: .82rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.status {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em;
  padding: 5px 9px; border-radius: 6px;
  min-width: 68px; text-align: center;
}
.status.in { color: var(--live); background: var(--live-soft); }
.status.out { color: var(--muted); background: rgba(143, 163, 156, .12); }
.panel__foot {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 22px; border-top: 1px solid var(--line-2);
  font-size: .85rem; color: var(--muted);
}
.panel__foot b { color: var(--ink); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase;
  padding: 6px 10px; border-radius: 6px;
  border: 1px solid var(--line); color: var(--ink);
}
.chip--gold { color: var(--gold); border-color: rgba(231, 179, 104, .35); }
.panel__demo { font-size: .72rem; font-family: var(--font-mono); letter-spacing: .08em; text-transform: uppercase; opacity: .7; }
@keyframes rowin { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: none; } }

/* Por qué Umbral */
.pillars {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 4vw, 56px);
  border-top: 1px solid var(--line); padding-top: 40px;
}
.pillar { display: grid; gap: 14px; align-content: start; }
.pillar__label {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold);
}
.pillar__icon { width: 28px; height: 28px; color: var(--gold); }
.pillar p { color: var(--muted); font-size: .98rem; }

/* Cómo funciona */
.steps { display: grid; gap: 0; max-width: 680px; }
.step {
  display: grid; grid-template-columns: 72px 1fr; gap: 22px; align-items: start;
  padding: 34px 0; border-top: 1px solid var(--line);
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step__num {
  font-family: var(--font-display); font-size: 3rem; line-height: 1; color: var(--gold);
  font-variant-numeric: tabular-nums;
}
.step__body { display: grid; gap: 10px; }
.step p { color: var(--muted); }
.step__meta { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }

/* FAQ */
.faq { max-width: 780px; margin-inline: auto; display: grid; }
.faq details {
  border-top: 1px solid var(--line);
}
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 22px 0;
  font-family: var(--font-display); font-size: 1.35rem; line-height: 1.25;
  transition: color .25s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--line);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 1rem; color: var(--gold);
  transition: transform .35s var(--ease), background .3s;
}
.faq details[open] summary::after { transform: rotate(45deg); background: var(--gold-soft); }
.faq summary:hover { color: var(--gold); }
.faq .faq__a { padding: 0 0 24px; color: var(--muted); max-width: 62ch; }

/* No es una promesa */
.proof { text-align: center; display: grid; gap: 22px; justify-items: center; }
.statement {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 3.3rem); line-height: 1.12; letter-spacing: -.01em;
  max-width: 22ch;
}
.proof p { max-width: 58ch; color: var(--muted); }

/* CTA final */
.cta { text-align: center; display: grid; gap: 26px; justify-items: center; }
.cta .h2 { max-width: 18ch; }
.cta__note { font-size: .9rem; color: var(--muted); }
.cta__phone {
  font-family: var(--font-mono); font-size: .92rem; letter-spacing: .06em;
  color: var(--ink); text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}
.cta__phone:hover { border-color: var(--gold); }

/* Footer */
.footer {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line-2);
  background: linear-gradient(180deg, rgba(10, 15, 18, .2), rgba(10, 15, 18, .85));
  padding-block: 40px calc(40px + env(safe-area-inset-bottom, 0px));
  font-size: .88rem; color: var(--muted);
}
.footer__inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px;
}
.footer .brand { font-size: 1.25rem; }
.footer__meta { display: grid; gap: 4px; text-align: right; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1000px) {
  .doors { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 820px) {
  .problem { grid-template-columns: 1fr; }
  .hero { align-items: flex-end; padding-block: 120px 96px; }
  .hero::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 72%;
    background: linear-gradient(180deg, rgba(10, 15, 18, 0), rgba(10, 15, 18, .86) 60%);
    pointer-events: none;
  }
  .hero__copy { max-width: 100%; }
  .h1 { max-width: 11ch; }
  .panel__rows li { grid-template-columns: 1fr auto; row-gap: 4px; }
  .panel__rows .where { grid-column: 1; }
  .panel__rows .when { grid-column: 1; }
  .panel__rows .status { grid-column: 2; grid-row: 1 / span 3; align-self: center; }
  .step { grid-template-columns: 52px 1fr; gap: 16px; padding: 26px 0; }
  .step__num { font-size: 2.3rem; }
  .footer__inner { justify-content: center; text-align: center; }
  .footer__meta { text-align: center; }
  .scroll-hint { display: none; }
  .dim::before { inset: -24px -12px; }
}

@media (max-width: 480px) {
  body { font-size: 1rem; }
  .eyebrow { font-size: .68rem; letter-spacing: .14em; }
  .btn { padding: 14px 20px; width: 100%; }
  .hero__cta { flex-direction: column; }
  .hero__live { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .loader__bar i { animation: none; width: 100%; }
}