body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
    text-align: center;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 20px 0;
}

main {
    padding: 20px;
}

.controls {
    margin-bottom: 20px;
    padding: 15px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.controls label {
    font-weight: bold;
    color: #555;
}

.controls input {
    padding: 5px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.controls button {
    padding: 8px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

#applyFilter {
    background-color: #4CAF50;
    color: white;
}

#applyFilter:hover {
    background-color: #45a049;
}

#resetFilter {
    background-color: #f44336;
    color: white;
}

#resetFilter:hover {
    background-color: #da190b;
}

canvas {
    margin: 20px auto;
    display: block;
}