/* ===== Paleta IAEXPERTiA ===== */
:root{
  --ia-green: #007A33;
  --ia-green-dark: #005826;
  --bg-dark: #0b1220;     /* base oscura */
  --bg-dark-2: #0f1a2e;   /* variación */
  --text: #e8f0ff;        /* texto claro */
  --muted: #a7b3c9;       /* texto secundario */
}

/* Reset básico */
*{ box-sizing:border-box; margin:0; padding:0; }
html,body{ height:100%; scroll-behavior:smooth; }
body{
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: #0a0f1a;
}

/* ===== Header ===== */
.site-header{
  position: sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding: 12px 20px;
  background: rgba(9, 19, 31, .85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.logo{ height:42px; width:auto; border-radius:10px; }
.main-nav{ list-style:none; display:flex; gap:18px; }
.main-nav a{
  color:#dbe7ff; text-decoration:none; font-weight:600;
  padding:8px 10px; border-radius:8px; transition:background .2s ease, color .2s;
}
.main-nav a:hover, .main-nav a.active{
  background: rgba(0,122,51,.15); color:#fff;
}

/* ===== HERO ===== */
.hero{
  position: relative;
  min-height: 100vh;
  display:grid; place-items:center;
  overflow:hidden; isolation:isolate;
}
.hero-inner{
  width:min(1100px, 92vw);
  text-align:center;
  padding: 24px;
  display:flex; flex-direction:column; align-items:center;
  gap: 10px;
}
.hero-logo{
  height: clamp(80px, 12vw, 120px);
  width:auto; margin: 0 auto 22px;
  border-radius: 16px;
  box-shadow: 0 12px 36px rgba(0,0,0,.45);
  transform: translateZ(0);
}
.hero-title{
  font-size: clamp(36px, 8vw, 72px);
  font-weight: 900; line-height: 1.05;
  margin: 4px auto 12px; letter-spacing: .2px;
  background: linear-gradient(180deg, #5ff2b8 0%, #1fd18d 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  text-shadow: 0 2px 14px rgba(31, 209, 141, .2);
}
.hero-subtitle{
  font-size: clamp(18px, 2.2vw, 22px);
  color: #cbd7f0;
  max-width: 980px;
  margin: 8px auto 26px;
  line-height: 1.6;
}

/* Botón principal */
.btn-cta{
  display:inline-block;
  padding: clamp(14px, 2.2vw, 18px) clamp(22px, 3.5vw, 28px);
  border-radius: 999px;
  background: var(--ia-green); color:#fff; text-decoration:none;
  font-weight: 800; font-size: clamp(16px, 2vw, 18px);
  box-shadow: 0 16px 36px rgba(0,122,51,.30);
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
}
.btn-cta:hover{
  background: var(--ia-green-dark);
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(0,122,51,.35);
}

/* Fondo tecnológico del hero */
.hero-bg{
  position:absolute; inset:0; z-index:-1;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(0,122,51,.20), transparent 60%),
    radial-gradient(1000px 700px at 20% 120%, rgba(0,122,51,.14), transparent 60%),
    linear-gradient(180deg, var(--bg-dark), var(--bg-dark-2));
}
.node{
  position:absolute; width:10px; height:10px; border-radius:50%;
  background: #69f0c3; box-shadow:0 0 10px rgba(105,240,195,.7);
  opacity:.6; animation: float 12s ease-in-out infinite;
}
.n1{ top:14%; left:12%; animation-delay:0s }
.n2{ top:28%; right:16%; animation-delay:1.2s }
.n3{ bottom:20%; left:20%; animation-delay:2.4s }
.n4{ bottom:12%; right:25%; animation-delay:3.2s }
.n5{ top:45%; left:48%; animation-delay:4.4s }
.n6{ top:70%; right:8%; animation-delay:5.1s }
@keyframes float{ 0%,100%{ transform:translateY(0) } 50%{ transform:translateY(-10px) } }

.grid{ position:absolute; inset:0; mix-blend-mode:screen; opacity:.08 }

/* ===== QUIÉNES SOMOS ===== */
.about{
  padding: 60px 16px; background: #0c1424; border-top:1px solid rgba(255,255,255,.06);
}
.container{ width:min(1100px, 94vw); margin:0 auto; }
.about h2{
  font-size: clamp(26px, 3vw, 34px); margin-bottom: 14px;
}
.about p{ color: var(--muted); font-size: 18px; line-height:1.6; margin-bottom: 18px; }
.bullets{ margin-top:10px; display:grid; gap:8px; }
.bullets li{ color:#cdd8ee; margin-left:1rem; list-style: "• "; }

/* ===== CTA Final ===== */
.cta-final{
  padding: 50px 16px; background: linear-gradient(180deg, #0c1424, #0b1220);
  text-align:center; border-top:1px solid rgba(255,255,255,.06);
}
.cta-final h3{ font-size: clamp(22px, 2.6vw, 28px); margin-bottom: 16px; }

/* ===== Footer ===== */
.site-footer{ padding:22px 16px; text-align:center; color:#9bb0cf; border-top:1px solid rgba(255,255,255,.06); }