/* =========================================================
   SYSTI — Estilos principales
   Paleta: azul eléctrico (#2b6bff) a violeta (#7b2bff)
   ========================================================= */

:root{
  --blue: #2f7bff;
  --violet: #8a3bff;
  --bg-dark-1: #0b0c1a;
  --bg-dark-2: #14152b;
  --card-bg: rgba(255,255,255,0.06);
  --card-border: rgba(255,255,255,0.14);
  --text-light: #f2f3f8;
  --text-muted: #b7bad0;
  --radius: 18px;
  --transition: 0.3s ease;
}

*{ box-sizing: border-box; }

html, body{
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: 'Poppins', sans-serif;
  color: var(--text-light);
  background: var(--bg-dark-1);
  overflow-x: hidden;
}

/* Fondo animado con gradientes tipo "tech" */
.bg-fx{
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 15% 20%, rgba(47,123,255,0.35), transparent 40%),
    radial-gradient(circle at 85% 15%, rgba(138,59,255,0.35), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(47,123,255,0.25), transparent 50%),
    linear-gradient(135deg, var(--bg-dark-1), var(--bg-dark-2));
  background-size: 200% 200%;
  animation: bgMove 18s ease-in-out infinite alternate;
}

.bg-fx::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at 50% 40%, black, transparent 75%);
}

@keyframes bgMove{
  0%   { background-position: 0% 0%, 100% 0%, 50% 100%, 0% 0%; }
  100% { background-position: 10% 10%, 90% 20%, 40% 90%, 100% 100%; }
}

.hero{
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 20px;
}

.hero-inner{
  width: 100%;
  max-width: 760px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: fadeUp 0.9s ease both;
}

@keyframes fadeUp{
  from{ opacity:0; transform: translateY(24px); }
  to{ opacity:1; transform: translateY(0); }
}

.brand{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom: 6px;
}

.brand-logo{
  width: 64px;
  height: 64px;
  object-fit: contain;
  filter: drop-shadow(0 0 14px rgba(122,90,255,0.65));
}

.brand-name{
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: 3px;
  margin: 0;
  background: linear-gradient(90deg, var(--blue), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline{
  font-size: clamp(0.85rem, 2vw, 1.05rem);
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 40px 0;
}

.card{
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 40px 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

.grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 20px;
}

.service{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-light);
  padding: 18px 8px;
  border-radius: 14px;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

.service i{
  font-size: 2rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(47,123,255,0.18), rgba(138,59,255,0.18));
  border: 1px solid rgba(255,255,255,0.18);
  transition: background var(--transition), box-shadow var(--transition);
}

.service span{
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

.service:hover{
  transform: translateY(-6px);
  background: rgba(255,255,255,0.05);
}

.service:hover i{
  background: linear-gradient(135deg, var(--blue), var(--violet));
  box-shadow: 0 0 24px rgba(122,90,255,0.55);
  color: #fff;
}

.service:hover span{
  color: #fff;
}

.social{
  display: flex;
  gap: 18px;
  margin-top: 40px;
}

.social-icon{
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
  font-size: 1.1rem;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

.social-icon:hover{
  transform: translateY(-4px) scale(1.05);
  background: linear-gradient(135deg, var(--blue), var(--violet));
  box-shadow: 0 8px 24px rgba(122,90,255,0.5);
}

.footer{
  margin-top: 36px;
}

.footer p{
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

/* ============ Responsive ============ */
@media (max-width: 600px){
  .grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .card{
    padding: 30px 18px;
  }
  .brand-logo{
    width: 52px;
    height: 52px;
  }
}

@media (max-width: 380px){
  .grid{
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 12px;
  }
  .social{
    gap: 12px;
  }
}