.card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    font-size: 24px;
    color: #333;
    margin-bottom: 10px;
}

p {
    color: #666;
    margin-bottom: 20px;
}

.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-bottom: 10px;
}

.btn.primary {
    background-color: #007bff;
    color: #fff;
}

.btn.primary:hover {
    background-color: #0056b3;
}

.btn.success {
    background-color: #28a745;
    color: #fff;
}

.btn.success:hover {
    background-color: #218838;
}

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

.hidden {
    display: none;
}

.status-msg {
    margin-top: 20px;
    font-size: 14px;
    color: #d9534f;
}

#wallet-info {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: left;
    font-size: 14px;
}

#wallet-info p {
    margin: 5px 0;
}

#tx-info {
    margin-top: 20px;
    padding: 15px;
    background: #e9f7ef;
    border-radius: 8px;
    color: #155724;
    font-size: 14px;
}

#tx-link {
    word-break: break-all;
    color: #007bff;
    text-decoration: none;
}