body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  background: #0f172a;
  color: #f1f5f9;
  text-align: center;
}

/* HEADER */
header {
  padding: 60px 20px;
  background: linear-gradient(135deg, #1e293b, #0f172a);
}

.volver {
  color: white;
  text-decoration: none;
  display: inline-block;
  margin-top: 10px;
  font-weight: bold;
  transition: all 0.3s ease;
}
.volver {
  display: inline-block;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #38bdf8, #0ea5e9);
  color: #000000;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: bold;
  letter-spacing: 0.5px;
  box-shadow: 0 8px 20px rgba(250, 254, 255, 0.3);
  transition: all 0.3s ease;
}
.volver:hover {
  color: #fafeff;
}

/* TITULOS */
header h1 {
  font-size: 40px;
  margin-bottom: 10px;
}

header p {
  font-size: 25px;
  color: #38bdf8;
}

/* CONTENIDO */
section {
  max-width: 800px;
  margin: 40px auto;
  padding: 20px;
}

h2 {
  color: #38bdf8;
  margin-bottom: 15px;
}
.SurVia {
  color: #38bdf8;
}

p {
  line-height: 1.6;
  margin-bottom: 15px;
  text-align: center;
  font-size: 16px;
}
/* BOTÓN SECRETO */
.secreto {
  color: transparent;
  cursor: pointer;
}
/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  background: #020617;
  font-size: 14px;
  color: #ffffff;
}

/* 🔥 BOTÓN PRO */
footer .btn-inicio {
  display: inline-block;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #38bdf8, #0ea5e9);
  color: #ffffff;
  text-decoration: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: bold;
  letter-spacing: 0.5px;
  box-shadow: 0 8px 20px rgba(56, 189, 248, 0.3);
  transition: all 0.3s ease;
}

/* EFECTO HOVER */
footer .btn-inicio:hover {
  background: linear-gradient(135deg, #0ea5e9, #38bdf8);
  color: #0f172a;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 25px rgba(56, 189, 248, 0.5);
}

/* EFECTO CLICK */
footer .btn-inicio:active {
  transform: scale(0.96);
  box-shadow: 0 5px 10px rgba(56, 189, 248, 0.4);
}

/* 📱 RESPONSIVE */
@media (max-width: 600px) {
  header {
    padding: 40px 15px;
  }

  header h1 {
    font-size: 28px;
  }

  header p {
    font-size: 20px;
  }

  section {
    margin: 20px auto;
    padding: 15px;
  }

  h2 {
    font-size: 22px;
  }

  p {
    font-size: 18px;
  }

  footer {
    font-size: 16px;
  }

  footer .btn-inicio {
    font-size: 16px;
    padding: 16px 24px;
  }
}