html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: #000;
    font-family: sans-serif;
    touch-action: none;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#menuToggle {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 100;
    padding: 10px 15px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
    font-size: 16px;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: background 0.3s, left 0.3s ease;
}

#menuToggle:hover {
    background: rgba(255, 255, 255, 0.25);
}

#menuToggle.shifted {
    left: 320px;
}

#sidebar {
    position: absolute;
    top: 0;
    left: -300px;
    z-index: 90;
    display: flex;
    flex-direction: column;
    gap: 25px;
    box-sizing: border-box;
    width: 300px;
    height: 100%;
    padding: 80px 20px 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    background: rgba(15, 15, 20, 0.7);
    backdrop-filter: blur(15px);
    transition: left 0.3s ease;
}

#sidebar.open {
    left: 0;
}

h2 {
    margin: 0 0 10px;
    font-size: 22px;
    font-weight: 300;
}

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

.control-header {
    display: flex;
    justify-content: space-between;
    color: #ccc;
    font-size: 14px;
}

input[type="range"],
select {
    width: 100%;
    box-sizing: border-box;
}

input[type="range"] {
    cursor: pointer;
}

select {
    padding: 8px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    cursor: pointer;
}

select option {
    background: #15151c;
}