body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #1a1a1a; /* Dark background */
    color: #ffffff; /* White text */
    margin: 0;
    padding: 40px 0; /* Add padding to top and bottom */
    box-sizing: border-box; /* Include padding in element's total width and height */
}

.container {
    background-color: #333333; /* Darker container background */
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    text-align: center;
    width: 45%; /* Approximately 50% smaller than 90% */
    max-width: 300px; /* Approximately 50% smaller than 600px */
}

.logo {
    display: block;
    margin: 0 auto 20px auto; /* Center logo and add space below */
    max-width: 100px; /* Adjust size as needed */
    height: auto;
}

h1 {
    color: #ffffff; /* White heading text */
}

p {
    color: #cccccc; /* Lighter text for paragraphs */
}

.drop-area {
    border: 2px dashed #666; /* Lighter dashed border */
    border-radius: 5px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    margin-bottom: 20px;
    transition: background-color 0.3s ease;
    background-color: #444444; /* Slightly lighter drop area background */
}

.drop-area.highlight {
    background-color: #555555; /* Highlight color */
}

#file-list {
    text-align: left;
    margin-bottom: 20px;
}

#file-list h2 {
    color: #ffffff; /* White heading text */
}

#file-list ul {
    list-style: none;
    padding: 0;
}

#file-list li {
    background-color: #555555; /* List item background */
    border: 1px solid #666; /* List item border */
    margin-top: 5px;
    padding: 10px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #ffffff; /* List item text color */
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: #007bff;
    color: white;
    transition: background-color 0.3s ease;
}

button:hover:not(:disabled) {
    background-color: #0056b3;
}

button:disabled {
    background-color: #666666; /* Disabled button color */
    cursor: not-allowed;
}

#download-link {
    margin-top: 20px;
}

#download-link a {
    color: #007bff; /* Link color */
    text-decoration: none;
    font-size: 18px;
}