/* Fondo espacio profundo */
 body.bubbles {
  margin: 0;
  height: 100vh;
  width: 100vw;
  background: radial-gradient(circle at 20% 30%, #0b0c2a, #0d1b3a 60%, #121f4f);
  overflow: hidden;
  min-height: 100vh;
  overflow-x: hidden;   /* evitás scroll horizontal, pero permitís el vertical */
  overflow-y: auto;
  position: relative;
  font-family: Arial, sans-serif;
  touch-action: pan-y;

}



/* Planetas grandes (blobs difuminados) */
.planet {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.7;
  z-index: 0;
}

.planet1 {
  width: 300px;
  height: 300px;
  background: #3f51b5; /* azul profundo */
  bottom: -50px;
  left: -50px;
}

.planet2 {
  width: 250px;
  height: 250px;
  background: #2196f3; /* azul medio */
  top: -40px;
  right: -40px;
}

/* Planetas pequeños / estrellas */
.star {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  filter: blur(5px);
  animation: drift 12s infinite ease-in-out;
}

.star1 {
  width: 20px;
  height: 20px;
  top: 25%;
  left: 30%;
  animation-delay: 0s;
}

.star2 {
  width: 15px;
  height: 15px;
  top: 50%;
  left: 60%;
  animation-delay: 4s;
}

.star3 {
  width: 18px;
  height: 18px;
  top: 70%;
  left: 20%;
  animation-delay: 8s;
}

/* Animación de deriva suave */
@keyframes drift {
  0%, 100% { transform: translate(0,0); }
  50% { transform: translate(20px,-15px); }
}

footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  z-index: 2;
  color: white;
  text-align: center;
/*  background: rgba(0,0,0,0.3); /* opcional para resaltar */
}