body {
    font-family: 'Bai Jamjuree', sans-serif;
    background-color: #f2f6fc;
    margin: 0;
    padding: 0;
}
* {
    font-family: 'Bai Jamjuree', sans-serif;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

h2 {
    text-align: center;
    color: #2c3e50;
}

input[type='file'] {
    display: block;
    margin: 20px auto;
    padding: 10px;
    font-size: 16px;
}

.button-group {
    text-align: center;
    margin-bottom: 20px;
}

button {
    padding: 10px 20px;
    margin: 0 10px;
    font-size: 15px;
    border: none;
    border-radius: 6px;
    background-color: #3498db;
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #2980b9;
}

.notification-box {
    background: #fefefe;
    border: 1px solid #ddd;
    padding: 15px;
    max-height: 400px;
    overflow-y: auto;
    font-family: monospace;
    font-size: 14px;
    white-space: pre-line;
    border-radius: 8px;
}

.notification-box div {
    margin-bottom: 6px;
}

.notification-box strong {
    font-size: 16px;
    color: #2c3e50;
    display: block;
    margin-top: 12px;
}

.noti-item {
    margin-bottom: 8px;
    font-size: 16px;
    line-height: 1.5;
    padding: 4px;
}

.noti-item strong {
    font-size: 18px;
    font-weight: bold;
}

.noti-item.success {
    color: green;
}

.noti-item.error {
    color: #e74c3c;
    font-weight: bold;
}

.noti-item.info {
    color: #34495e;
}

.loading-box {
    text-align: center;
    font-weight: bold;
    font-size: 16px;
    color: #2980b9;
    margin-bottom: 15px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        opacity: 0.3;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.3;
    }
}