body {
    margin: 0;
    font-family: sans-serif;
    background-color: #f0f0f0;
}

canvas {
    display: block;
}

#info {
    position: absolute;
    top: 10px;
    width: 100%;
    text-align: center;
    color: #333;
    padding: 10px;
    box-sizing: border-box;
}

.controls {
    position: absolute;
    bottom: 220px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.7);
    padding: 10px;
    border-radius: 5px;
    display: flex;
    gap: 10px;
}

.vector-control {
    display: flex;
    align-items: center;
    gap: 5px;
}

.vector-control label {
    font-weight: bold;
}

.vector-control input[type="number"] {
    width: 50px;
}

#dot-product-result {
    position: absolute;
    bottom: 280px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.7);
    padding: 10px;
    border-radius: 5px;
    text-align: center;
}

#scalar-controls {
    bottom: 150px;
}

#sphere-plane-controls {
    bottom: 20px;
    flex-direction: column;
}

#gradient-controls {
    bottom: 20px;
    flex-direction: column;
}

#function-input {
    width: 200px;
    margin-left: 10px;
}

.vector-select {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-left: 10px;
}