body {
    font-family: sans-serif;
    background-color: #f0f2f5;
    color: #333;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1, h2 {
    color: #333;
}

#file-loader {
    border: 2px dashed #ccc;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    margin-bottom: 20px;
    transition: background-color 0.2s;
}

#file-loader.drag-over {
    background-color: #e9ecef;
}

#file-input {
    display: none;
}

.button {
    background-color: #007bff;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s;
}

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

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

#file-list li {
    background: #f8f9fa;
    padding: 10px;
    border: 1px solid #ddd;
    margin-bottom: 5px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: grab;
}

#file-list li.drag-over-item {
    background-color: #e9ecef;
    border-style: dashed;
}

.remove-btn {
    background-color: #dc3545;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 12px;
}

.remove-btn:hover {
    background-color: #c82333;
}

.operation {
    margin-bottom: 10px;
}

#bates-options {
    display: none;
    margin-top: 10px;
}

#bates-options div {
    margin-bottom: 10px;
}

#bates-options input, #bates-options select {
    margin-right: 10px;
    padding: 5px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 15px;
    }

    h1 {
        font-size: 24px;
    }

    #file-loader {
        padding: 20px;
    }

    #bates-options {
        display: flex;
        flex-direction: column;
    }

    #bates-options input {
        margin-bottom: 10px;
    }
}