/* Estilo general del cuerpo */
body {
  background-color: #000000;
  color: #00ffcc;
  font-family: 'Lucida Console', Monaco, monospace;
  text-align: center;
  padding: 50px;
  background-image: url('https://www.transparenttextures.com/patterns/stardust.png');
}

/* Contenedor principal */
.selector-box {
  border: 5px ridge #00ffff;
  padding: 30px;
  background: linear-gradient(to bottom right, #001f33, #004466);
  width: 400px;
  margin: 0 auto;
  box-shadow: 0px 0px 20px #00cccc;
  border-radius: 10px;
}

/* Título principal */
h1 {
  font-size: 28px;
  color: #ffffff;
  text-shadow: 2px 2px 5px #00ffff;
  margin-bottom: 20px;
}

/* Botón de acción */
button {
  background-color: #00cccc;
  color: #000000;
  border: 3px outset #00ffff;
  padding: 10px 25px;
  font-size: 18px;
  cursor: pointer;
  font-weight: bold;
  font-family: 'Courier New', Courier, monospace;
  border-radius: 6px;
  box-shadow: 0 0 10px #00ffff;
  transition: all 0.3s ease;
}

button:hover {
  background-color: #009999;
  box-shadow: 0 0 20px #00ffff;
}

/* Resultado */
#resultado {
  margin-top: 25px;
  font-size: 36px;
  font-weight: bold;
  color: #66ffcc;
  text-shadow: 1px 1px 10px #00ffcc;
}

/* Footer decorativo */
footer {
  font-size: 12px;
  color: #888;
  margin-top: 40px;
  font-style: italic;
}