/* LinkedFlow — landing. Tema oscuro sobre los azules de la marca:
   tinta #1E2A44 (navy del logo) y acero #4C7EA8, con luces #7FB4E8. */

@font-face {
  font-family: 'Inter';
  src: url('/fonts/InterVariable.woff2') format('woff2');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #070b16;
  --ink-2: #0b1122;
  --ink-3: #101830;
  --navy: #1e2a44;
  --steel: #4c7ea8;
  --steel-2: #5b8dbe;
  --sky: #7fb4e8;
  --sky-bright: #a8d1f7;
  --text: #e8eef9;
  --text-dim: #9aa8c4;
  --text-faint: #6b7a99;
  --line: rgba(127, 180, 232, 0.14);
  --card: rgba(16, 24, 48, 0.55);
  --radius: 16px;
  --font: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: rgba(76, 126, 168, 0.45); color: #fff; }

img, svg { max-width: 100%; display: block; }
a { color: var(--sky); text-decoration: none; }
a:hover { color: var(--sky-bright); }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

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

.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(7, 11, 22, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 24px;
}

.logo { display: inline-flex; align-items: center; gap: 12px; color: var(--text); }
.logo svg { height: 40px; width: auto; flex: none; }
.logo-word { display: inline-flex; align-items: baseline; font-weight: 800; font-size: 24px; letter-spacing: -0.5px; line-height: 1; }
.logo-word .lw-a { color: var(--text); }
.logo-word .lw-b {
  margin-left: 5px; padding: 4px 10px 6px; border-radius: 9px;
  background: var(--steel); color: #fff;
}
.logo-tag {
  display: block; font-size: 10.5px; font-weight: 500; letter-spacing: 1.6px;
  color: var(--text-faint); margin-top: 4px; text-transform: none;
}

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { color: var(--text-dim); font-size: 14.5px; font-weight: 500; }
.main-nav a:hover { color: var(--text); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 12px; font-weight: 600; font-size: 15px; line-height: 1;
  padding: 14px 24px; cursor: pointer; border: 1px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--steel-2), var(--steel));
  color: #fff;
  box-shadow: 0 8px 30px rgba(76, 126, 168, 0.35), inset 0 1px 0 rgba(255,255,255,0.18);
}
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 14px 40px rgba(91, 141, 190, 0.45), inset 0 1px 0 rgba(255,255,255,0.18); }
.btn-ghost {
  background: rgba(127, 180, 232, 0.06); color: var(--text);
  border-color: rgba(127, 180, 232, 0.25);
}
.btn-ghost:hover { color: #fff; border-color: rgba(127, 180, 232, 0.5); background: rgba(127, 180, 232, 0.12); }
.btn-sm { padding: 10px 18px; font-size: 14px; }

.nav-toggle { display: none; }

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

.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  padding: 140px 0 110px;
  overflow: hidden;
  background:
    radial-gradient(1100px 600px at 78% 18%, rgba(76, 126, 168, 0.20), transparent 62%),
    radial-gradient(900px 700px at 12% 82%, rgba(30, 42, 68, 0.55), transparent 60%),
    var(--ink);
}
#hero-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  display: block; z-index: 0; pointer-events: none;
}
.hero::after {
  /* Funde el 3D con la sección siguiente. */
  content: ''; position: absolute; inset: auto 0 0 0; height: 180px; z-index: 1;
  background: linear-gradient(180deg, transparent, var(--ink));
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: 1.8px; text-transform: uppercase;
  color: var(--sky); padding: 8px 16px; border-radius: 999px;
  border: 1px solid rgba(127, 180, 232, 0.25);
  background: rgba(127, 180, 232, 0.07);
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--sky);
  box-shadow: 0 0 12px 2px rgba(127, 180, 232, 0.8);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800; letter-spacing: -0.035em; line-height: 1.06;
  margin: 0 0 24px;
}
.grad {
  background: linear-gradient(100deg, var(--sky-bright) 0%, var(--sky) 45%, var(--steel-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--text-dim); max-width: 600px; margin: 0 0 40px;
}
.hero-sub strong { color: var(--text); font-weight: 600; }
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.hero-note { margin-top: 22px; font-size: 13.5px; color: var(--text-faint); display: flex; gap: 8px; align-items: center; }
.hero-note svg { width: 15px; height: 15px; flex: none; }

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

section { position: relative; padding: 110px 0; }
.section-head { max-width: 680px; margin: 0 auto 64px; text-align: center; }
.kicker {
  display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: 2.4px;
  text-transform: uppercase; color: var(--steel-2); margin-bottom: 14px;
}
h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.12; margin: 0 0 18px; }
.section-head p { color: var(--text-dim); font-size: 1.08rem; margin: 0; }

/* Cinta de la métrica */
.metric-strip {
  padding: 0; margin-top: -40px;
}
.metric-inner {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 34px 24px; text-align: center;
  background: linear-gradient(90deg, transparent, rgba(76,126,168,0.08), transparent);
}
.metric-inner p { margin: 0; font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--text-dim); }
.metric-inner strong { color: var(--sky-bright); font-weight: 700; }

/* Tarjetas de features */
.grid { display: grid; gap: 20px; }
.features-grid { grid-template-columns: repeat(3, 1fr); }
.card {
  position: relative; border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  padding: 30px 28px;
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
  overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(420px 200px at var(--mx, 50%) var(--my, 0%), rgba(127,180,232,0.10), transparent 65%);
  opacity: 0; transition: opacity .3s ease; pointer-events: none;
}
.card:hover { transform: translateY(-4px); border-color: rgba(127, 180, 232, 0.32); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 46px; height: 46px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(140deg, rgba(91,141,190,0.28), rgba(30,42,68,0.7));
  border: 1px solid rgba(127, 180, 232, 0.28);
  margin-bottom: 20px;
}
.card-icon svg { width: 22px; height: 22px; stroke: var(--sky); }
.card h3 { font-size: 1.12rem; font-weight: 700; margin: 0 0 10px; letter-spacing: -0.01em; }
.card p { font-size: 14.5px; color: var(--text-dim); margin: 0; }

/* ---------- Cómo funciona ---------- */

.steps { grid-template-columns: repeat(3, 1fr); counter-reset: step; }
.step { position: relative; padding: 30px 26px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--card); }
.step-num {
  font-size: 13px; font-weight: 700; letter-spacing: 1.5px; color: var(--sky);
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px;
}
.step-num::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-size: 26px; font-weight: 800; letter-spacing: -1px;
  background: linear-gradient(120deg, var(--sky-bright), var(--steel-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step h3 { margin: 0 0 10px; font-size: 1.1rem; }
.step p { margin: 0; font-size: 14.5px; color: var(--text-dim); }

/* Ilustración del builder */
.canvas-demo {
  margin-top: 64px; border-radius: 20px; border: 1px solid var(--line);
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(76,126,168,0.12), transparent 70%),
    var(--ink-2);
  padding: 20px; overflow: hidden;
}
.canvas-demo svg { width: 100%; height: auto; }
.flow-edge { stroke-dasharray: 7 7; animation: flowdash 1.4s linear infinite; }
@keyframes flowdash { to { stroke-dashoffset: -14; } }

/* ---------- Seguridad ---------- */

.safety { }
.safety-panel {
  border-radius: 24px; border: 1px solid rgba(127, 180, 232, 0.2);
  background:
    radial-gradient(800px 400px at 85% 10%, rgba(76,126,168,0.16), transparent 60%),
    linear-gradient(160deg, var(--ink-3), var(--ink-2));
  padding: 64px 56px;
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center;
}
.safety-panel h2 { margin-bottom: 16px; }
.safety-panel > div > p { color: var(--text-dim); margin: 0 0 28px; }
.safety-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.safety-list li { display: flex; gap: 14px; align-items: flex-start; font-size: 15px; color: var(--text-dim); }
.safety-list li strong { color: var(--text); display: block; font-size: 15.5px; margin-bottom: 2px; }
.check {
  flex: none; width: 26px; height: 26px; border-radius: 8px; margin-top: 2px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(127, 180, 232, 0.12); border: 1px solid rgba(127, 180, 232, 0.3);
}
.check svg { width: 14px; height: 14px; stroke: var(--sky-bright); }

/* ---------- FAQ ---------- */

.faq-list { max-width: 760px; margin: 0 auto; display: grid; gap: 14px; }
details {
  border: 1px solid var(--line); border-radius: 14px; background: var(--card);
  overflow: hidden; transition: border-color .25s ease;
}
details[open] { border-color: rgba(127, 180, 232, 0.35); }
summary {
  cursor: pointer; list-style: none; padding: 20px 24px;
  font-weight: 600; font-size: 15.5px; display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: '+'; font-size: 22px; font-weight: 400; color: var(--steel-2);
  transition: transform .25s ease; line-height: 1; flex: none;
}
details[open] summary::after { transform: rotate(45deg); }
details .faq-body { padding: 0 24px 22px; color: var(--text-dim); font-size: 14.5px; }
details .faq-body p { margin: 0 0 10px; }
details .faq-body p:last-child { margin-bottom: 0; }

/* ---------- CTA final ---------- */

.cta-final { text-align: center; }
.cta-panel {
  position: relative; border-radius: 28px; overflow: hidden;
  border: 1px solid rgba(127, 180, 232, 0.22);
  background:
    radial-gradient(900px 420px at 50% -10%, rgba(91, 141, 190, 0.3), transparent 65%),
    linear-gradient(180deg, var(--ink-3), var(--ink-2));
  padding: 88px 32px;
}
.cta-panel h2 { font-size: clamp(2rem, 4.4vw, 3.1rem); margin-bottom: 16px; }
.cta-panel p { color: var(--text-dim); max-width: 560px; margin: 0 auto 36px; font-size: 1.1rem; }
.cta-panel .hero-ctas { justify-content: center; }

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding: 56px 0 40px; background: var(--ink-2); }
.footer-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-brand p { color: var(--text-faint); font-size: 13.5px; max-width: 320px; margin: 14px 0 0; }
.footer-col h4 { font-size: 13px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-dim); margin: 0 0 16px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-col a { color: var(--text-faint); font-size: 14px; }
.footer-col a:hover { color: var(--sky); }
.footer-legal {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  color: var(--text-faint); font-size: 13px;
}
.footer-legal a { color: var(--text-faint); }
.footer-legal a:hover { color: var(--sky); }

/* ---------- Banner de cookies ---------- */

.cookie-banner {
  position: fixed; z-index: 100; left: 20px; right: 20px; bottom: 20px;
  max-width: 520px; margin-left: auto;
  border-radius: 18px; border: 1px solid rgba(127, 180, 232, 0.3);
  background: rgba(11, 17, 34, 0.92);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  padding: 24px; box-shadow: 0 24px 70px rgba(0, 0, 0, 0.55);
  transform: translateY(24px); opacity: 0; pointer-events: none;
  transition: transform .35s ease, opacity .35s ease;
}
.cookie-banner.visible { transform: translateY(0); opacity: 1; pointer-events: auto; }
.cookie-banner h3 { margin: 0 0 8px; font-size: 15.5px; }
.cookie-banner p { margin: 0 0 18px; font-size: 13.5px; color: var(--text-dim); }
.cookie-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- Páginas legales ---------- */

.legal-page { padding: 150px 0 90px; max-width: 780px; }
.legal-page h1 { font-size: clamp(2rem, 4vw, 2.6rem); }
.legal-page h2 { font-size: 1.35rem; margin-top: 44px; }
.legal-page h3 { font-size: 1.05rem; margin-top: 28px; }
.legal-page p, .legal-page li { color: var(--text-dim); font-size: 15px; }
.legal-page strong { color: var(--text); }
.legal-updated { font-size: 13.5px; color: var(--text-faint); margin-bottom: 36px; }
.legal-page table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 20px 0; }
.legal-page th, .legal-page td { text-align: left; padding: 10px 14px; border: 1px solid var(--line); color: var(--text-dim); }
.legal-page th { color: var(--text); background: rgba(127, 180, 232, 0.06); }
.back-home { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 28px; font-size: 14px; }

/* ---------- Animaciones de entrada ---------- */

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

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

@media (max-width: 960px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .safety-panel { grid-template-columns: 1fr; padding: 44px 32px; gap: 36px; }
}

@media (max-width: 720px) {
  .main-nav {
    position: fixed; inset: 72px 0 auto 0; z-index: 49;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: rgba(7, 11, 22, 0.97); border-bottom: 1px solid var(--line);
    padding: 12px 24px 20px;
    transform: translateY(-130%); transition: transform .3s ease;
  }
  .main-nav.open { transform: none; }
  .main-nav a { padding: 12px 0; font-size: 16px; width: 100%; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px;
  }
  .nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s ease, opacity .25s ease; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .header-cta { display: none; }
  .features-grid { grid-template-columns: 1fr; }
  section { padding: 80px 0; }
  .hero { padding-top: 120px; }
  .cookie-banner { left: 12px; right: 12px; bottom: 12px; }
}