body {
    margin: 0;
    overflow: hidden;
    background: radial-gradient(ellipse at center, #000011 0%, #000000 100%);
}
canvas {
    display: block;
}
#controls {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(255, 255, 255, 0.85);
    padding: 15px;
    border-radius: 8px;
    font-family: 'Segoe UI', sans-serif;
    max-width: 220px;
}
#controls h3 {
    margin: 0 0 10px;
}
.slider-container {
    margin: 10px 0;
}
.slider-container label {
    display: block;
    font-size: 14px;
}
input[type="range"] {
    width: 100%;
}
#pauseResume, #toggleMode {
    margin-top: 10px;
    padding: 8px;
    width: 100%;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    background-color: #333;
    color: white;
}
#tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 12px;
    pointer-events: none;
    display: none;
}
#planetInfo {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(0, 0, 0, 0.85);
    color: white;
    padding: 10px;
    border-radius: 5px;
    font-family: monospace;
    max-width: 250px;
}