@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;700&family=IBM+Plex+Sans:wght@400;700&display=swap');

body {
  background-color: #83C9F4;
  color: black;
  font-family: 'IBM Plex Sans', sans-serif;
}
h1, h2, h3, h4, h5, h6 {
  font-family: 'IBM Plex Mono', monospace;
}
/* =========================================
   EFECTO DE AGUA (BURBUJAS) PARA LA PECERA
   ========================================= */

.burbujas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.burbujas li {
  position: absolute;
  display: block;
  list-style: none;
  width: 20px;
  height: 20px;
  /* Color de la burbuja: blanco con un poco de transparencia */
  background: rgba(255, 255, 255, 0.15); 
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  bottom: -150px;
  animation: subir 10s infinite linear;
}

.burbujas li:nth-child(1) { left: 25%; width: 80px; height: 80px; animation-delay: 0s; }
.burbujas li:nth-child(2) { left: 10%; width: 30px; height: 30px; animation-delay: 2s; animation-duration: 12s; }
.burbujas li:nth-child(3) { left: 70%; width: 20px; height: 20px; animation-delay: 4s; }
.burbujas li:nth-child(4) { left: 40%; width: 60px; height: 60px; animation-delay: 0s; animation-duration: 18s; }
.burbujas li:nth-child(5) { left: 65%; width: 40px; height: 40px; animation-delay: 3s; }
.burbujas li:nth-child(6) { left: 75%; width: 10px; height: 10px; animation-delay: 2s; }
.burbujas li:nth-child(7) { left: 15%; width: 10px; height: 10px; animation-delay: 2s; }
.burbujas li:nth-child(8) { left: 40%; width: 30px; height: 30px; animation-delay: 3s; }
.burbujas li:nth-child(9) { left: 25%; width: 25px; height: 25px; animation-delay: 3s; }
.burbujas li:nth-child(10) { left: 10%; width: 80px; height: 80px; animation-delay: 3s; }

@keyframes subir {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
    border-radius: 50%;
  }
  100% {
    transform: translateY(-1000px) rotate(720deg);
    opacity: 0;
    border-radius: 40%; 
  }
}