/* ==========================================================================
   Nelix Systems — Landing (Diagnóstico de Procesos, IA y Seguridad + Implementación)
   Tema oscuro sobre el azul marino de marca, con cuadrícula de fondo.
   ========================================================================== */

:root {
  /* Colores corporativos Nelix Systems */
  --color-primary: #1F3A5F;      /* Azul profundo */
  --color-secondary: #4A6FA5;    /* Azul grisáceo */
  --color-accent: #2ED3A8;       /* Verde tecnológico */
  --color-light: #F5F6F7;        /* Gris claro */
  --color-white: #FFFFFF;

  /* Derivados */
  --color-bg: #091128;           /* Azul marino del logo */
  --color-primary-deep: #16283f;
  --color-accent-dark: #1fae8a;
  --color-text: #E6ECF5;
  --color-muted: #9DAEC7;
  --color-line: rgba(124, 156, 204, 0.18);
  --color-card: rgba(22, 40, 63, 0.55);

  /* Tipografía de marca */
  --font-heading: "Space Grotesk", "Sora", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;

  /* Ritmo */
  --section-padding: clamp(64px, 9vw, 112px);
  --container-width: 1120px;
  --radius: 14px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- Fondo: cuadrícula + halos de marca ---------- */

.bg-grid,
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.bg-grid {
  background-image:
    linear-gradient(rgba(74, 111, 165, 0.17) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 111, 165, 0.17) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 85%);
  mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 85%);
}

.bg-glow {
  background:
    radial-gradient(40% 36% at 85% 4%, rgba(46, 211, 168, 0.13), transparent 70%),
    radial-gradient(46% 42% at 4% 22%, rgba(31, 58, 95, 0.75), transparent 70%),
    radial-gradient(50% 40% at 50% 100%, rgba(74, 111, 165, 0.18), transparent 70%);
}

/* Hélice 3D de fondo (fotogramas sobre negro; "screen" deja ver solo el brillo) */

.helix-bg {
  --helix-fade: 0;
  position: fixed;
  top: 50%;
  right: max(-60px, calc(50% - 760px));
  z-index: 0;
  height: min(92vh, 900px);
  width: auto;
  aspect-ratio: 9 / 16;
  transform: translateY(-46%);
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 12%, #000 80%, transparent 97%), linear-gradient(90deg, transparent 10%, #000 30%, #000 70%, transparent 90%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(180deg, transparent 0%, #000 12%, #000 80%, transparent 97%), linear-gradient(90deg, transparent 10%, #000 30%, #000 70%, transparent 90%);
  mask-composite: intersect;
  transition: opacity 0.8s ease;
}

.helix-bg.is-ready { opacity: calc(0.95 - var(--helix-fade) * 0.72); }

/* Arte 3D de sección (imagen sobre negro, mismo recurso "screen"; se desplaza más lento que el contenido) */

.section-art {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 0;
  height: min(560px, 100%);
  overflow: hidden;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 55%, transparent 100%), linear-gradient(90deg, transparent 0%, #000 45%, #000 85%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(180deg, transparent 0%, #000 22%, #000 55%, transparent 100%), linear-gradient(90deg, transparent 0%, #000 45%, #000 85%, transparent 100%);
  mask-composite: intersect;
}

.section-art img {
  --art-shift: 0px;
  position: absolute;
  top: -15%;
  left: 0;
  width: 100%;
  max-width: none;
  height: 130%;
  object-fit: cover;
  object-position: 70% 40%;
  transform: translate3d(0, var(--art-shift), 0);
  will-change: transform;
}


img, svg { max-width: 100%; display: block; }
a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-white);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 0.6em;
  font-weight: 600;
  text-wrap: balance;
}

h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.12rem; letter-spacing: -0.005em; }
p { margin: 0 0 1em; }

.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  position: relative;
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--color-line);
}

.section-head { max-width: 760px; margin-bottom: 44px; }
.section-head p { color: var(--color-muted); font-size: 1.08rem; margin: 0; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-family: var(--font-heading);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-accent);
}

.accent { color: var(--color-accent); }

/* ---------- Botones ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 30px;
  border: 0;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.1;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 0 0 1px rgba(46, 211, 168, 0.4), 0 14px 34px -14px rgba(46, 211, 168, 0.7);
}

.btn-primary:hover {
  background: #45e0b8;
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px rgba(46, 211, 168, 0.6), 0 20px 40px -14px rgba(46, 211, 168, 0.8);
}

.btn-primary .arrow { transition: transform 0.18s ease; }
.btn-primary:hover .arrow { transform: translateX(3px); }
.btn-sm { padding: 11px 20px; font-size: 0.9rem; }
.btn-block { width: 100%; }

.btn:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.microcopy { margin: 14px 0 0; font-size: 0.9rem; color: var(--color-muted); }
.section-cta { margin-top: 44px; }

/* ---------- Tarjetas ---------- */

.card {
  position: relative;
  padding: 26px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-card);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(46, 211, 168, 0.45);
  box-shadow: 0 22px 44px -28px rgba(46, 211, 168, 0.55);
}

.card--muted { background: rgba(9, 17, 40, 0.5); }
.card--muted:hover { border-color: var(--color-line); box-shadow: none; transform: none; }

.card--accent {
  border-color: rgba(46, 211, 168, 0.4);
  background:
    radial-gradient(90% 120% at 0% 0%, rgba(46, 211, 168, 0.12), transparent 60%),
    var(--color-card);
}

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.label {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.label--accent { color: var(--color-accent); }

.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 11px;
  font-size: 0.97rem;
}

.list li { position: relative; padding-left: 24px; color: var(--color-text); }

.list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 12px;
  height: 2px;
  background: var(--color-accent);
}

.list--muted li { color: var(--color-muted); }
.list--muted li::before { background: var(--color-secondary); }

/* ---------- Cabecera ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 17, 40, 0.78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.site-header.is-scrolled { border-bottom-color: var(--color-line); }

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand { display: inline-flex; line-height: 0; }
.brand img { height: 46px; width: auto; }

/* ---------- Hero ---------- */

.hero { padding: clamp(56px, 8vw, 104px) 0 clamp(64px, 9vw, 112px); border-top: 0; }

.hero-row {
  max-width: 900px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px 56px;
}

.hero-cta { flex: none; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding: 7px 16px;
  border: 1px solid rgba(46, 211, 168, 0.35);
  border-radius: 999px;
  background: rgba(46, 211, 168, 0.06);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse-dot 2.2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(46, 211, 168, 0.5); }
  50% { box-shadow: 0 0 0 7px rgba(46, 211, 168, 0); }
}

.hero h1 {
  max-width: 860px;
  margin: 0 0 32px;
  font-size: clamp(2.3rem, 5.8vw, 4.3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
}

.hero .subheadline {
  flex: 1 1 380px;
  max-width: 600px;
  margin: 0;
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: var(--color-muted);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-heading);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.hero-meta li { display: inline-flex; align-items: center; gap: 9px; }

.hero-meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--color-accent);
}

/* ---------- Problema ---------- */

.pain q {
  display: block;
  margin-bottom: 18px;
  font-family: var(--font-heading);
  font-size: 1.14rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-white);
  quotes: "\201C" "\201D";
}

.pain { display: flex; flex-direction: column; }
.pain q { flex: 1; }

.pain .cost {
  display: block;
  padding-top: 16px;
  border-top: 1px solid var(--color-line);
  font-size: 0.95rem;
  color: var(--color-muted);
}

.pain .cost small {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.punchline {
  max-width: 760px;
  margin: 40px 0 0;
  padding-left: 20px;
  border-left: 2px solid var(--color-accent);
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 1.9vw, 1.35rem);
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-white);
}

/* ---------- Método ---------- */

.stage-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 16px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-line);
}

.stage-head h3 { margin: 0; font-size: 1.3rem; }

.stage-time {
  font-family: var(--font-heading);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.steps li {
  position: relative;
  counter-increment: step;
  padding: 0 0 18px 46px;
}

.steps li:last-child { padding-bottom: 0; }

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(46, 211, 168, 0.45);
  border-radius: 8px;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-accent);
}

.steps li::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 35px;
  bottom: 4px;
  width: 1px;
  background: var(--color-line);
}

.steps li:last-child::after { display: none; }

.steps b {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-white);
}

.steps span { font-size: 0.93rem; color: var(--color-muted); }
.steps--phases li::before { content: "F" counter(step); counter-increment: none; }
.steps--phases { counter-reset: step -1; }
.steps--phases li { counter-increment: step; }

.stage-note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--color-line);
  font-size: 0.93rem;
  color: var(--color-muted);
}

/* ---------- Caso ---------- */

.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 40px; }
.case-grid p { margin: 0; font-size: 0.97rem; color: var(--color-text); }

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
  padding-top: 26px;
  border-top: 1px solid var(--color-line);
}

.stat b {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
}

.stat span { display: block; margin-top: 8px; font-size: 0.86rem; color: var(--color-muted); }
.case-foot { margin: 20px 0 0; font-size: 0.84rem; color: var(--color-muted); }

/* ---------- Fundador ---------- */

.founder {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}

.founder-photo {
  position: relative;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
}

.founder-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center 22%; }

.founder-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(9, 17, 40, 0.75));
}

.founder-name {
  position: absolute;
  left: 18px;
  bottom: 16px;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-white);
}

.founder-name small { display: block; font-weight: 500; font-size: 0.76rem; color: var(--color-accent); }
.founder p { color: var(--color-muted); font-size: 1.05rem; }

.link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 211, 168, 0.4);
  padding-bottom: 2px;
}

.link:hover { border-bottom-color: var(--color-accent); }

/* ---------- Oferta ---------- */

.offer { padding: clamp(26px, 4vw, 40px); margin-bottom: 18px; }
.offer h3 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); }
.offer p { max-width: 720px; color: var(--color-muted); }
.offer p:last-child { margin: 0; }

/* ---------- Reserva ---------- */

.booking .container {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.booking-copy p { color: var(--color-muted); font-size: 1.08rem; }
.booking-copy .list { margin-top: 26px; }

.booking-card { padding: clamp(22px, 3.5vw, 34px); }
.booking-card:hover { transform: none; }

.progress {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 26px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
}

.progress span { padding-top: 10px; border-top: 2px solid var(--color-line); }
.progress span.is-active { border-top-color: var(--color-accent); color: var(--color-white); }

.form-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.form-row label { font-size: 0.84rem; font-weight: 600; color: var(--color-text); }

.form-row input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--color-line);
  border-radius: 10px;
  background: rgba(9, 17, 40, 0.65);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.form-row input:focus { border-color: var(--color-accent); background: rgba(9, 17, 40, 0.9); }

.form-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { min-height: 1.3em; margin: 12px 0 0; font-size: 0.9rem; font-weight: 600; color: #ff9a8b; }
.form-privacy { margin: 10px 0 0; font-size: 0.8rem; color: var(--color-muted); text-align: center; }
.form-privacy a { color: var(--color-text); }

#booking-step-2 iframe { width: 100%; height: 720px; border: 0; border-radius: 10px; background: var(--color-bg); }
[hidden] { display: none !important; }

/* ---------- Páginas secundarias (gracias, privacidad) ---------- */

.page { padding: clamp(48px, 7vw, 88px) 0 var(--section-padding); border-top: 0; }
.page h1 { margin: 0 0 20px; font-size: clamp(2rem, 4.6vw, 3.2rem); font-weight: 700; letter-spacing: -0.02em; }
.page .lead { max-width: 640px; font-size: 1.12rem; color: var(--color-muted); }

.next-steps { margin: 40px 0; }
.next-steps .steps li { padding-bottom: 20px; }

.prose { max-width: 760px; }
.prose h2 { margin: 44px 0 14px; font-size: 1.3rem; letter-spacing: -0.005em; }
.prose p,
.prose li { color: var(--color-muted); }
.prose ul { margin: 0 0 1em; padding-left: 20px; }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--color-text); font-weight: 600; }
.prose a { color: var(--color-accent); }
.prose .updated { font-size: 0.88rem; }

/* ---------- Pie ---------- */

.site-footer {
  position: relative;
  z-index: 1;
  padding: 34px 0 44px;
  border-top: 1px solid var(--color-line);
  font-size: 0.88rem;
  color: var(--color-muted);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
}

.site-footer img { height: 30px; width: auto; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--color-accent); }

/* ---------- Barra CTA fija (mobile) ---------- */

.sticky-cta {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
  background: rgba(9, 17, 40, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-line);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.sticky-cta.is-hidden { transform: translateY(110%); opacity: 0; }

/* ---------- Reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible { opacity: 1; transform: none; }
.grid > .reveal:nth-child(2) { transition-delay: 0.08s; }
.grid > .reveal:nth-child(3) { transition-delay: 0.16s; }

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

@media (max-width: 900px) {

  .booking .container,
  .founder { grid-template-columns: minmax(0, 1fr); }
  .grid-3 { grid-template-columns: minmax(0, 1fr); }
  .founder-photo { max-width: 320px; }
  .helix-bg { right: -150px; height: min(78vh, 640px); }
  .helix-bg.is-ready { opacity: calc(0.38 - var(--helix-fade) * 0.26); }
  .section-art { height: 340px; opacity: 0.34; }
}

@media (max-width: 700px) {
  .grid-2,
  .case-grid,
  .form-grid-2 { grid-template-columns: minmax(0, 1fr); }
  .container { padding: 0 16px; }
  .site-header .btn { display: none; }
  .sticky-cta { display: block; }
  .sticky-cta .btn { width: 100%; }
  body { padding-bottom: 76px; }
  .stats { gap: 12px; }
  .card { padding: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-badge .dot { animation: none; }

  .btn, .card, .sticky-cta { transition: none; }
}