body {
    background: linear-gradient(135deg, #000, #222);
    font-family: Arial, sans-serif;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
    margin:0;
    color:white;
}

.login-box {
    background:black;
    padding:40px;
    border-radius:20px;
    border:2px solid #FFD700;
    text-align:center;
}

.otp-container {
    display:flex;
    gap:10px;
    justify-content:center;
    margin-top:15px;
}

.otp-input {
    width:50px;
    height:60px;
    font-size:28px;
    text-align:center;
    border-radius:8px;
    border:2px solid #FFD700;
    background:black;
    color:white;
}

button {
    margin-top:20px;
    padding:12px 24px;
    border:none;
    border-radius:12px;
    font-weight:bold;
    background:linear-gradient(145deg,#FFD700,#e6c300);
    cursor:pointer;
}

.error {
    color:red;
    margin-top:15px;
}