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

.box {
    background: #1e293b;
    padding: 40px;
    border-radius: 16px;
    width: 400px;
    text-align: center;
}

input {
    margin-top: 20px;
    width: 100%;
}

button {
    margin-top: 20px;
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: #3b82f6;
    color: white;
    cursor: pointer;
}