* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background: #1a1a1a;
}

#glCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Control Panel */
#controlPanel {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(26, 26, 26, 0.9);
    border: 1px solid #444;
    border-radius: 8px;
    padding: 20px;
    min-width: 250px;
    color: #fff;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    backdrop-filter: blur(10px);
}

#controlPanel h3 {
    margin: 0 0 15px 0;
    font-size: 16px;
    font-weight: 600;
    color: #4db8ff;
}

.control-group {
    margin-bottom: 15px;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 13px;
    color: #ddd;
}

.control-group label span {
    float: right;
    color: #4db8ff;
    font-weight: 600;
}

.control-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: #333;
    outline: none;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #4db8ff;
    cursor: pointer;
    transition: background 0.2s;
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
    background: #6dc5ff;
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #4db8ff;
    cursor: pointer;
    border: none;
    transition: background 0.2s;
}

.control-group input[type="range"]::-moz-range-thumb:hover {
    background: #6dc5ff;
}