:root {
    --naranja: #D85918;
    --azul: #1E3461;
    --blanco: #ffffff;
    --grisClaro: #f4f4f4;
}
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: #f4f4f4;
}

.container {
    background: white;
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    max-width: 400px;
    width: 100%;
    position: relative;
}
.container img {
    width: 50%;
    display: block;
    margin: auto;
}
.container h2 {
    color: var(--azul);        /* color naranja */
    font-size: 1.9em;      /* tamaño de letra */
    text-transform: uppercase; /* convertir a mayúsculas */
    font-weight: bold;     /* negrita */
}

.circles {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
overflow: hidden;
}

.circles li {
position: absolute;
display: block;
list-style: none;
width: 20px;
height: 20px;
background: #1E3461;
animation: animate 25s linear infinite;
bottom: -150px;
}

.circles li:nth-child(1) {
left: 25%;
width: 80px;
height: 80px;
animation-delay: 0s;
}

.circles li:nth-child(2) {
left: 10%;
width: 20px;
height: 20px;
animation-delay: 2s;
animation-duration: 12s;
}

.circles li:nth-child(3) {
left: 70%;
width: 20px;
height: 20px;
animation-delay: 4s;
}

.circles li:nth-child(4) {
left: 40%;
width: 60px;
height: 60px;
animation-delay: 0s;
animation-duration: 18s;
}

.circles li:nth-child(5) {
left: 65%;
width: 20px;
height: 20px;
animation-delay: 0s;
}

.circles li:nth-child(6) {
left: 75%;
width: 110px;
height: 110px;
animation-delay: 3s;
}

.circles li:nth-child(7) {
left: 35%;
width: 150px;
height: 150px;
animation-delay: 7s;
}

.circles li:nth-child(8) {
left: 50%;
width: 25px;
height: 25px;
animation-delay: 15s;
animation-duration: 45s;
}

.circles li:nth-child(9) {
left: 20%;
width: 15px;
height: 15px;
animation-delay: 2s;
animation-duration: 35s;
}

.circles li:nth-child(10) {
left: 85%;
width: 150px;
height: 150px;
animation-delay: 0s;
animation-duration: 11s;
}

@keyframes animate {
0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
    border-radius: 0;
}

100% {
    transform: translateY(-1000px) rotate(720deg);
    opacity: 0;
    border-radius: 50%;
}
}
h2, h3 {
    text-align: center;
}
input[type="text"], input[type="email"], input[type="password"] {
    width: 100%;
    padding: 8px;
    margin: 5px 0 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
button {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    background: #007BFF;
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
}
button:hover {
    background: #0056b3;
}
.hidden { display: none; }
.arrow-back {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 20px;
    cursor: pointer;
    color: #007BFF;
}
.checkbox {
    margin-bottom: 10px;
}