body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background-color: #defade; /* Light swampy green */
    color: #333;
}

header {
    background-color: #708238; /* Darker swampy green */
    color: white;
    text-align: center;
    padding: 1em 0;
}

main {
    padding: 20px;
}

#upload-area {
    margin-bottom: 20px;
    text-align: center;
}

#image-upload {
    display: none;
}

#upload-area label {
    background-color: #a3b18a;
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
}

#filter-controls {
    margin-bottom: 20px;
    text-align: center;
}

#filter-controls button {
    background-color: #a3b18a;
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    margin: 0 5px;
}

#image-display {
    text-align: center;
}

#filtered-image {
    max-width: 100%;
    height: auto;
    border: 2px solid #708238;
    border-radius: 5px;
}

footer {
    text-align: center;
    padding: 1em 0;
    background-color: #708238;
    color: white;
    position: fixed;
    bottom: 0;
    width: 100%;
}

#image-canvas {
    display: none;
}