/* ----------
  Estilos base modernos y responsivos
---------- */
:root{
  --bg: #0b1220;
  --surface: #0f172a;
  --text: #e6e8ee;
  --muted: #a3acc2;
  --primary: #36c2ff;
  --primary-600: #1da6e5;
  --accent: #7cf7d4;
  --ring: #7ad1ff;
  --shadow: 0 10px 30px rgba(0,0,0,0.25);
  --radius: 16px;
}

@media (prefers-color-scheme: light){
  :root{
    --bg:#f8fafc;
    --surface:#ffffff;
    --text:#0b1220;
    --muted:#475569;
    --primary:#0ea5e9;
    --primary-600:#0284c7;
    --accent:#0ea5e9;
    --ring:#60a5fa;
  }
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, 'Noto Sans', 'Apple Color Emoji', 'Segoe UI Emoji';
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 90% -10%, rgba(54,194,255,0.15), transparent 60%),
    radial-gradient(900px 600px at -10% 10%, rgba(124,247,212,0.14), transparent 50%),
    var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-600)}
.container{width:min(1100px, 92%); margin-inline:auto}

.skip-link{
  position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;
}
.skip-link:focus{left:1rem;top:1rem;width:auto;height:auto;background:var(--surface);padding:.5rem .75rem;border-radius:.5rem;outline:2px solid var(--ring)}

.site-header{
  position:sticky;top:0;z-index:1000;background:rgba(15,23,42,0.6);backdrop-filter:saturate(150%) blur(10px);
  border-bottom:1px solid rgba(255,255,255,0.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding: .8rem 0;}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--text)}
.brand-text{font-weight:700;letter-spacing:.4px}
.brand-text span{color:var(--primary)}

.nav-toggle{display:none;background:none;border:0;cursor:pointer}
.nav-toggle-bar{display:block;width:22px;height:2px;background:var(--text);margin:4px 0;border-radius:2px}

.nav-menu{display:flex;align-items:center;gap:1rem;list-style:none;margin:0;padding:0}
.nav-menu a{padding:.5rem .75rem;border-radius:.6rem}
.nav-menu .btn-sm{padding:.45rem .75rem}

@media (max-width: 860px){
  .nav-toggle{display:block}
  .nav-menu{
    position:absolute;inset:60px 0 auto 0;background:var(--surface);
    padding: .75rem;flex-direction:column;align-items:flex-start;border-bottom:1px solid rgba(255,255,255,.08);
    transform-origin: top center;transform: scaleY(0);opacity:0;pointer-events:none;transition:.25s ease;
  }
  .nav-menu.open{transform: scaleY(1);opacity:1;pointer-events:auto}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;background:var(--primary);color:#001018;
  padding:.85rem 1.1rem;border-radius:.8rem;font-weight:700;border:1px solid transparent;box-shadow: var(--shadow);
}
.btn:hover{background:var(--primary-600)}
.btn-ghost{background:transparent;color:var(--text);border-color:rgba(255,255,255,.15);box-shadow:none}
.btn-ghost:hover{border-color:rgba(255,255,255,.35)}

.hero{
  padding: clamp(3rem, 8vw, 6rem) 0;
  background:
    radial-gradient(800px 500px at 20% -20%, rgba(14,165,233,.18), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,.02), rgba(0,0,0,.02)),
    transparent;
}
.grid-2{display:grid;grid-template-columns: 1.1fr .9fr;gap: clamp(1rem, 4vw, 3rem);align-items:center}
@media (max-width: 900px){.grid-2{grid-template-columns: 1fr}}

.hero-copy h1{font-size: clamp(1.9rem, 3.5vw, 3rem); line-height:1.1; margin:0 0 .8rem}
.hero-copy .lead{font-size: clamp(1rem, 1.5vw, 1.1rem); color:var(--muted);margin:0 0 1rem}
.accent{color:var(--accent); text-transform:uppercase; letter-spacing:.04em}
.cta{display:flex;gap:.8rem;flex-wrap:wrap;margin:1rem 0 1rem}

.bullets{display:grid;grid-template-columns:1fr 1fr;gap:.5rem 1rem;margin:1rem 0 0;padding:0;list-style:none;color:var(--muted)}
.bullets li{display:flex;gap:.5rem}
.bullets li::before{content:"▹"; color:var(--accent);margin-right:.1rem}

.hero-media .glass-card{
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border:1px solid rgba(255,255,255,.12);
  box-shadow: var(--shadow);
  padding:1rem;
}
svg.network{color:var(--primary); width:100%; height:auto}
.node{fill:currentColor}
.link{stroke:url(#grad);stroke-width:3;stroke-linecap:round}

.section{padding: clamp(2.5rem, 6vw, 4rem) 0}
.section.alt{background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(0,0,0,.02))}
.section-header{max-width: 720px; margin: 0 auto 1.5rem; text-align:center}
.section-header h2{font-size: clamp(1.4rem, 2.2vw, 2rem); margin:0 0 .4rem}
.section-header p{color:var(--muted); margin:0}

.cards{display:grid;grid-template-columns: repeat(3, 1fr); gap:1rem}
@media (max-width: 1000px){.cards{grid-template-columns: repeat(2, 1fr)}}
@media (max-width: 680px){.cards{grid-template-columns: 1fr}}

.card{
  background: var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding:1rem;
  box-shadow: var(--shadow);
  display:flex; flex-direction:column; gap:.75rem;
}
.card-icon{width:44px;height:44px;border-radius:10px;display:grid;place-items:center;
  background: rgba(54,194,255,.12); color: var(--primary);
}
.card h3{margin:.2rem 0 .2rem}
.card-list{margin:.2rem 0 .4rem; padding-left:1.2rem}
.card-cta{margin-top:auto; font-weight:700}

.steps{
  display:grid; grid-template-columns: repeat(4,1fr); gap:1rem; counter-reset: step;
}
@media (max-width: 900px){.steps{grid-template-columns: 1fr 1fr}}
@media (max-width: 560px){.steps{grid-template-columns: 1fr}}

.step{
  background: var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding:1rem; box-shadow: var(--shadow)
}
.step-number{
  display:inline-grid;place-items:center;
  width:34px;height:34px;border-radius:50%;
  background: rgba(124,247,212,.18);
  color: var(--accent); font-weight:800; margin-bottom:.4rem;
}

.badges{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}
.badge{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.04);padding:.4rem .6rem;border-radius:.6rem}
.faq details{background: var(--surface); border:1px solid rgba(255,255,255,.08); padding:.8rem 1rem; border-radius:.8rem; margin:.5rem 0}
.faq summary{cursor:pointer; font-weight:700}
.faq p{margin:.6rem 0 0; color: var(--muted)}

.contact{background:
 linear-gradient(120deg, rgba(14,165,233,.10), transparent 40%),
 linear-gradient(240deg, rgba(124,247,212,.08), transparent 40%)
}
.contact-copy .contact-list{list-style:none; padding:0; margin:1rem 0; color:var(--muted)}
.contact-form{
  background: var(--surface);
  border:1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:1rem;
}
.contact-form label{font-weight:600}
.contact-form input, .contact-form textarea{
  width:100%; margin:.3rem 0 1rem; padding:.8rem .9rem; border-radius:.6rem;
  border:1px solid rgba(255,255,255,.18); background:#0b1220; color:var(--text);
  outline: none;
}
.contact-form input:focus, .contact-form textarea:focus{border-color:var(--ring); box-shadow:0 0 0 4px rgba(122, 209, 255, .15)}
.form-note{color:var(--muted); font-size:.9rem; margin:.5rem 0 0}

.site-footer{border-top:1px solid rgba(255,255,255,.08); background:rgba(0,0,0,.2)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.2rem 0;flex-wrap:wrap}
.footer-inner nav a{color:var(--muted); margin-left: .8rem}

/* Animaciones suaves al hacer scroll */
.reveal{opacity:0; transform: translateY(12px); transition: opacity .6s ease, transform .6s ease}
.reveal.is-visible{opacity:1; transform:none}

@media (prefers-reduced-motion: reduce){
  *{animation:none;transition:none}
}