body {
    background-color: #f8f9fa;
    color: #212529;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    max-width: 650px;
    margin: 50px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

h1 {
    color: #1a1a1a;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
}

.file-list {
    list-style: none;
    padding: 0;
}

.file-list li {
    margin-bottom: 8px;
}

button {
    padding: 10px 18px;
    background-color: #edf2f7;
    color: #2d3748;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #e2e8f0;
    color: #0056b3;
}

.folder {
    display: inline-block;
    padding: 10px 14px;
    color: #d69e2e;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.2s;
}

.folder:hover {
    background-color: #f7fafc;
}

.gray-text {
    color: #a0aec0;
    font-size: 12px;
    margin-top: 40px;
    border-top: 1px solid #edf2f7;
    padding-top: 15px;
}

.gray-text a {
    color: #718096;
}