body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    text-align: center;
    padding: 20px;
}

.container {
    background: white;
    max-width: 800px;
    margin: auto;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h2 {
    color: #333;
}

label {
    font-weight: bold;
    display: block;
    margin: 10px 0 5px;
}

input[type="text"],
textarea,
input[type="file"] {
    width: 90%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

textarea {
    height: 100px;
    resize: vertical;
}

button {
    background-color: #007bff;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: 50%;
}

button:hover {
    background-color: #0056b3;
}

.result {
    margin-top: 20px;
    padding: 10px;
    background: #e8f5e9;
    border-radius: 5px;
}

/* Popup Loading */
#loadingPopup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: white;
    font-size: 18px;
}

.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin-bottom: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.button-container {
    display: flex;
    gap: 10px; /* Khoảng cách giữa các nút */
    align-items: center; /* Căn giữa theo chiều dọc */
	justify-content: center; /* Căn giữa theo chiều ngang */
}

#detailButton {
    background-color: #28a745;
	margin: 10px;
	max-width: 200px;
}

#detailButton:hover {
    background-color: #218838;
}

#privateKeyButton {
    background-color: #ff0000;
	margin: 10px;
	max-width: 200px;
}

#privateKeyButton:hover {
    background-color: #ba0000;
}

#detailResult {
    display: none;
    margin-top: 20px;
    padding: 10px;
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-align: left;
    white-space: pre-wrap;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}