.payment-container {
    margin-top: 20px;
}

.btn {
    padding: 12px 24px;
    font-size: 16px;
    cursor: pointer;
    background-color: #3b82f6;
    color: white;
    border: none;
    border-radius: 6px;
    margin: 5px;
    transition: 0.2s;
}

.btn:disabled {
    background-color: #a5b4fc;
    cursor: not-allowed;
}

#wallet-address {
    margin-top: 10px;
    font-weight: bold;
}