.custom-otp-login-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.otp-login-form h3 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.otp-step {
    display: none;
}

.otp-step.active {
    display: block;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    box-sizing: border-box;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    margin-right: 10px;
    margin-bottom: 10px;
}

.btn-primary {
    background: #007cba;
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #005a87;
}

.btn-primary:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #545b62;
}

.otp-message {
    margin-top: 15px;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    font-weight: bold;
}

.otp-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.otp-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Responsive design */
@media (max-width: 480px) {
    .custom-otp-login-container {
        margin: 20px;
        padding: 15px;
    }
    
    .btn {
        width: 100%;
        margin-right: 0;
    }
}