body {
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    background: #1e293b;
    padding: 30px;
    border-radius: 20px;
    width: 300px;
    text-align: center;
}

input, select {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 10px;
    border: none;
    outline: none;
}

/* BOTÃO ESTILO APP */
.botao-redondo {
    margin-top: 15px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: none;
    background: white;
    color: #1e293b;
    font-size: 30px;
    cursor: pointer;

    display: flex;
    justify-content: center;
    align-items: center;

    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    transition: 0.3s;
}

.botao-redondo:hover {
    background: white;
    transform: scale(1.1);
}

.botao-redondo:active {
    transform: scale(0.95);
}

#resultado {
    margin-top: 15px;
    color: white;
}