/* Fondo y tipografía */
body {
  margin: 0;
  padding: 20px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f9f9f9, #ececec);
  color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Títulos */
h2 {
  color: #444;
  text-align: center;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

/* Botón genérico */
button, .btn {
  display: inline-block;
  padding: 10px 18px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s;
}

/* Botón azul */
.btn-primary {
  background: #0077cc;
  color: white;
}
.btn-primary:hover {
  background: #005fa3;
}

/* Botón oscuro (si necesitas) */
.btn-dark {
  background: #444;
  color: white;
}
.btn-dark:hover {
  background: #222;
}