body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#app {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 100%;
}

h1, h2 {
    text-align: center;
    color: #333;
}

input, button {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background-color: #007bff;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

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

#file-list li {
    background-color: #f8f9fa;
    padding: 0.5rem;
    margin-bottom: 0.5rem;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.error {
    color: red;
    text-align: center;
}

#logout-button {
    margin-top: 1rem;
}

#file-upload {
    margin-bottom: 0.5rem;
}

.file-actions {
    display: flex;
    gap: 0.5rem;
}

.file-actions button {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}