html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    background: #152542;
    font-family: sans-serif;
}

.controls {
    position: absolute;
    top: 10px;
    right: 10px;

    width: 240px;
    padding: 12px;

    background: rgba(25,25,25,0.9);
    border-radius: 6px;

    font-family: sans-serif;
    font-size: 13px;
    color: #eee;

    display: flex;
    flex-direction: column;
    gap: 12px;
}

.group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

input[type="range"] {
    width: 100%;
}

input[type="color"] {
    height: 28px;
    padding: 0;
    border: none;
    background: none;
}

button {
    padding: 6px 8px;
    border: none;
    border-radius: 4px;

    background: #444;
    color: white;

    cursor: pointer;
}

button:hover {
    background: #666;
}