body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

h1 {
    text-align: center;
    margin-top: 20px;
}

.controls {
    position: absolute;
    top: 60px;
    left: 50px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.8);
    padding: 10px;
    border-radius: 5px;
}

#visualization {
    width: 100vw;
    height: 100vh;
    position: relative;
}

.tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 5px;
    border-radius: 5px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}