This example demonstrates two reusable legend components rendered with SVG in D3 v5. The color legend uses `d3.scaleOrdinal` to map categorical fruit names to a custom color range, displaying each swatch with a fixed circle radius and text offset. The size legend uses `d3.scaleSqrt` to map numeric values from 0 to 10 to proportional circle radii, with tick marks generated via `sizeScale.ticks()`. Both legends are positioned within a single SVG and styled through shared CSS classes, highlighting how D3’s data joins and merge patterns update legend elements dynamically.