@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(-45deg, #30b699, #fc913a, #9f298d, #00c9ff, #aa2b2b);
    background-size: 400% 400%;
    animation: gradientBG 10s ease infinite;
}

div {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    text-align: center;
    color: white;
}

h1 {
    font-size: 2rem;
    margin-bottom: 20px;
}

label, select, input {
    display: block;
    margin: 10px auto;
    font-size: 1.2rem;
    padding: 10px;
    border-radius: 10px;
    border: none;
}

button {
    background: linear-gradient(45deg, #30997d, #479a44);
    border: none;
    padding: 15px 25px;
    font-size: 1.2rem;
    border-radius: 10px;
    cursor: pointer;
    color: white;
    transition: all 0.3s ease-in-out;
    box-shadow: 0 5px 15px rgba(255, 140, 0, 0.5);
}

button:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(255, 140, 0, 0.7);
}

#resultado {
    margin-top: 20px;
    font-size: 1.3rem;
}