body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    padding: 20px;
}

h2, h3 {
    color: #333;
}

form {
    margin-bottom: 20px;
    background: #fff;
    padding: 15px;
    border-radius: 10px;
}

input[type="file"] {
    margin-bottom: 10px;
}

.file-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.file-card {
    background: #fff;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

button {
    background: #007bff;
    color: white;
    padding: 7px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}