/* Fondo animado para formularios (aislado, sin alterar inputs) */
.circles-form { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; overflow: hidden; }
.circles-form li { position: absolute; display: block; list-style: none; width: 20px; height: 20px; background: #070d8a; opacity: 0.7; bottom: -150px; animation: animateCircles 25s linear infinite; }
.circles-form li:nth-child(1){ left: 25%; width: 80px; height: 80px; animation-delay: 0s; }
.circles-form li:nth-child(2){ left: 10%; width: 20px; height: 20px; animation-delay: 2s; animation-duration: 12s; }
.circles-form li:nth-child(3){ left: 70%; width: 20px; height: 20px; animation-delay: 4s; }
.circles-form li:nth-child(4){ left: 40%; width: 60px; height: 60px; animation-delay: 0s; animation-duration: 18s; }
.circles-form li:nth-child(5){ left: 65%; width: 20px; height: 20px; animation-delay: 0s; }
.circles-form li:nth-child(6){ left: 75%; width: 110px; height: 110px; animation-delay: 3s; }
.circles-form li:nth-child(7){ left: 35%; width: 150px; height: 150px; animation-delay: 7s; }
.circles-form li:nth-child(8){ left: 50%; width: 25px; height: 25px; animation-delay: 15s; animation-duration: 45s; }
.circles-form li:nth-child(9){ left: 20%; width: 15px; height: 15px; animation-delay: 2s; animation-duration: 35s; }
.circles-form li:nth-child(10){ left: 85%; width: 150px; height: 150px; animation-delay: 0s; animation-duration: 11s; }

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

/* Asegura que tu contenido quede por encima (si alguna vista lo necesita) */
.form-content-layer { position: relative; z-index: 1; }