body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: #1e1e1e;
    margin: 0;
    color: #e0e0e0;
}

h1 {
    color: #e0e0e0;
    margin-bottom: 20px;
    font-size: 2em;
}

#file-input {
    margin-bottom: 20px;
    padding: 10px;
    background-color: #333;
    border: none;
    border-radius: 5px;
    color: #e0e0e0;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#file-input:hover {
    background-color: #555;
}

#output {
    background-color: #2a2a2a;
    padding: 20px;
    border: 1px solid #444;
    border-radius: 8px;
    width: 300px;
    height: 200px;
    overflow-y: auto;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    font-size: 1em;
}