body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 20px;
    color: #333;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
}

h1 {
    color: #007BFF;
    margin-bottom: 20px;
}

button {
    padding: 10px 15px;
    background-color: #007BFF;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
    margin: 5px 0;
    width: 150px;
    transition: background-color 0.3s ease;
}

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

#status {
    margin-top: 10px;
    font-weight: bold;
    display: inline-block;
}

.spinner {
    border: 4px solid #f3f3f3; /* Light grey */
    border-top: 4px solid #007BFF; /* Blue */
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 10px auto;
    display: block;
}

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

input[type="file"] {
    display: block;
    margin: 10px auto;
    padding: 8px;
    border-radius: 4px;
}

#upload-form {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#buttons-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}