* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: url('/background.jpg') center/cover no-repeat fixed;
  color: white;
  min-height: 100vh;
  text-align: center;
  position: relative;
}

body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.78);
  z-index: -1;
}

/* Título neon */
.neon-title {
  font-size: 4.2rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-shadow: 
    0 0 20px #fff,
    0 0 40px #ff00ff,
    0 0 80px #ff00ff,
    0 0 120px #ff00ff;
  margin: 2.5rem 0 1rem;
  padding-top: 2rem;
}

/* Botón grande Contáctanos */
.contact-btn-large {
  display: inline-block;
  background: linear-gradient(135deg, #00ffaa, #00cc88);
  color: black;
  padding: 1.1rem 3.5rem;
  border-radius: 50px;
  font-size: 1.35rem;
  font-weight: bold;
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(0, 255, 170, 0.5);
  transition: all 0.3s ease;
  margin: 1.5rem 0 3rem;
}

.contact-btn-large:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 10px 25px rgba(0, 255, 170, 0.6);
}

/* Grid de tarjetas */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.6rem;
  padding-top: 2rem;
  padding-bottom: 4rem;
  max-width: 1100px;
  margin: 0 auto;
}

.card {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 1.6rem 1rem;
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.4s ease;
}

.card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.18);
}

.btn {
  padding: 0.75rem 1.8rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  display: inline-block;
  margin-top: 1rem;
  font-size: 1rem;
  transition: all 0.3s;
}

.btn:hover {
  transform: scale(1.08);
}

/* Colores pasteles */
.card:nth-child(1) .btn { background: #c4d0ff; color: #1e2937; }
.card:nth-child(2) .btn { background: #a5d6ff; color: #1e2937; }
.card:nth-child(3) .btn { background: #f8c4e0; color: #1e2937; }
.card:nth-child(4) .btn { background: #a3f7d4; color: #1e2937; }
.card:nth-child(5) .btn { background: #ffe0b8; color: #1e2937; }
.card:nth-child(6) .btn { background: #d8c4ff; color: #1e2937; }

footer {
  padding: 3rem 1rem 2rem;
  opacity: 0.85;
  font-size: 0.95rem;
}

/* Responsive */
@media (max-width: 768px) {
  .neon-title { font-size: 2.6rem; }
  .contact-btn-large { font-size: 1.1rem; padding: 0.9rem 2.8rem; }
  .grid { padding-top: 1.5rem; }
}