body {
    margin: 0;
    overflow: hidden;
    background-color: #f8f8f8;
    font-family: sans-serif;
    display: flex;
    height: 100vh;
}

#controls {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#controls table {
    border-collapse: collapse;
    width: 100%;
}
#controls th, #controls td {
    padding: 4px;
    text-align: left;
    font-size: 13px;
}
#controls input[type="number"] {
    width: 50px;
    padding: 4px;
    border: 1px solid #ccc;
    border-radius: 3px;
}
#controls input[type="checkbox"] {
    margin-right: 4px;
}
#controls button {
    padding: 8px 12px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    margin-top: 10px;
    transition: background-color 0.2s;
}
#controls button:hover {
    background-color: #0056b3;
}

#canvas {
    display: block;
    flex-grow: 1;
}