/* Fondo con estrellas animadas */
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Quicksand', sans-serif;
  background-color: #0b0c1e;
  overflow: hidden;
}

.fondo-estrellas {
  position: fixed;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);
  background-image: url('https://www.transparenttextures.com/patterns/stardust.png');
  animation: movimientoEstrellas 120s linear infinite;
  z-index: 0;
}

@keyframes movimientoEstrellas {
  from {background-position: 0 0;}
  to {background-position: -10000px 5000px;}
}

/* Contenedor principal */
.portada {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 10% auto;
  background: rgba(255, 255, 255, 0.05);
  padding: 40px;
  border-radius: 20px;
  text-align: center;
  color: #fff;
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

/* Título */
.portada h1 {
  font-size: 2.5em;
  margin-bottom: 20px;
  color: #e0d6f9;
}

/* Texto */
.portada p {
  font-size: 1.2em;
  line-height: 1.6;
  color: #e8e6f1;
}

/* Botón */
.boton {
  margin-top: 30px;
  padding: 15px 30px;
  font-size: 1em;
  background: linear-gradient(45deg, #9d50bb, #6e48aa);
  color: white;
  border: none;
  border-radius: 30px;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.boton:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px #9d50bb;
}