{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "depth-chart",
  "title": "Depth chart",
  "description": "Depth chart is a production-ready charts component from BJORK UI, packaged for shadcn registries.",
  "dependencies": [
    "clsx",
    "framer-motion",
    "next-themes",
    "tailwind-merge"
  ],
  "files": [
    {
      "path": "components/bjork-ui/charts/depth-chart.tsx",
      "content": "\"use client\";\n\nimport { useDeferredValue, useEffect, useMemo, useRef, type KeyboardEvent, type PointerEvent } from \"react\";\nimport { cn } from \"@/lib/utils\";\nimport type { BjorkTone } from \"@/components/bjork-ui/_core/palette\";\nimport { mulberry32 } from \"@/components/bjork-ui/_core/random\";\nimport { useChartCanvas, easeOut, writeLabels } from \"@/components/bjork-ui/charts/_kit/canvas\";\nimport {\n  useChartTheme,\n  chartFocusRing,\n  ChartTable,\n  LabelPool,\n  HoverTooltip,\n  chartTagEdge,\n  ChartAnnouncer,\n  type TooltipHandle,\n  type AnnouncerHandle,\n  type TooltipContent,\n} from \"@/components/bjork-ui/charts/_kit/chrome\";\nimport { clamp, crisp, damp, niceTicks, withAlpha, formatCompact, formatFixed, formatNumber, formatSigned } from \"@/components/bjork-ui/charts/_kit/scale\";\n\nexport interface BookLevel {\n  price: number;\n  size: number;\n}\n\nexport interface DepthChartProps {\n  bids: BookLevel[];\n  asks: BookLevel[];\n  /** Half-width of the view around mid, as a fraction of mid. Auto by default. */\n  range?: number;\n  formatPrice?: (p: number) => string;\n  formatSize?: (s: number) => string;\n  /** Posed probe: side and level index from the touch. */\n  probe?: { side: \"bid\" | \"ask\"; level: number } | null;\n  height?: number;\n  ariaLabel?: string;\n  tone?: BjorkTone;\n  attract?: boolean;\n  className?: string;\n}\n\nconst TOP = 34;\nconst BOTTOM = 26;\nconst PAD_LEFT = 46;\nconst PAD_RIGHT = 8;\nconst SAMPLE_PX = 1;\nconst DEPTH_TAU = 0.1;\nconst RANGE_TAU = 0.4;\nconst CONTRACT_PX = 2;\nconst ENTER_MS = 800;\nconst X_LABELS = 10;\nconst Y_LABELS = 6;\nconst ATTRACT_STEP_MS = 900;\nconst ATTRACT_IDLE_MS = 4000;\n\nconst clock = () => performance.now();\n// Fixed decimals so 101.30 and 101.28 line up in the tooltip and table.\nconst defaultFormatPrice = (p: number) => formatFixed(p, 2);\nconst defaultFormatSize = (s: number) => formatCompact(s, 1);\n\ninterface Book {\n  bids: BookLevel[]; // best first (desc)\n  asks: BookLevel[]; // best first (asc)\n  cumB: number[];\n  cumA: number[];\n  mid: number;\n  spread: number;\n}\n\nfunction prepareBook(bids: BookLevel[], asks: BookLevel[]): Book {\n  const b = bids.filter((l) => l.size > 0).sort((x, y) => y.price - x.price);\n  const a = asks.filter((l) => l.size > 0).sort((x, y) => x.price - y.price);\n  const cumB: number[] = [];\n  const cumA: number[] = [];\n  b.reduce((s, l, i) => (cumB[i] = s + l.size), 0);\n  a.reduce((s, l, i) => (cumA[i] = s + l.size), 0);\n  const bb = b[0]?.price ?? 0;\n  const ba = a[0]?.price ?? bb;\n  return { bids: b, asks: a, cumB, cumA, mid: (bb + ba) / 2, spread: ba - bb };\n}\n\n// Walking the book to a level: total size, volume-weighted fill and impact from mid.\nfunction walk(book: Book, side: \"bid\" | \"ask\", level: number) {\n  const levels = side === \"bid\" ? book.bids : book.asks;\n  let size = 0;\n  let notional = 0;\n  for (let i = 0; i <= level && i < levels.length; i++) {\n    size += levels[i].size;\n    notional += levels[i].size * levels[i].price;\n  }\n  const vwap = size ? notional / size : book.mid;\n  const last = levels[Math.min(level, levels.length - 1)]?.price ?? book.mid;\n  return { size, vwap, price: last, impactBp: ((vwap - book.mid) / book.mid) * 1e4, slipBp: ((last - book.mid) / book.mid) * 1e4 };\n}\n\n// Cumulative depth rises away from mid, so the empty space next to a probe is on the mid side:\n// above-left of an ask point, above-right of a bid point. Fall back to the other side at the edge.\n// `top` is the header (legend and spread pill): if above would reach it, the card drops below the probe.\nfunction placeProbeTooltip(side: \"bid\" | \"ask\", x: number, y: number, tw: number, th: number, w: number, h: number, top: number, gap = 12) {\n  let tx = side === \"ask\" ? x - gap - tw : x + gap;\n  if (tx < 0) tx = x + gap;\n  if (tx + tw > w) tx = x - gap - tw;\n  tx = clamp(tx, 0, Math.max(0, w - tw));\n  let ty = y - th - gap;\n  if (ty < top) ty = y + gap;\n  ty = clamp(ty, top, Math.max(top, h - th));\n  return { x: Math.round(tx), y: Math.round(ty) };\n}\n\ninterface Run {\n  tmpB: Float32Array;\n  tmpA: Float32Array;\n  bidDisp: Float32Array;\n  askDisp: Float32Array;\n  ready: boolean;\n  yMax: number;\n  enter: number;\n  probe: { side: \"bid\" | \"ask\"; level: number } | null;\n  source: \"pointer\" | \"keyboard\" | \"prop\" | \"attract\" | null;\n  plot: { l: number; r: number; t: number; b: number };\n  view: { lo: number; hi: number };\n  xCache: string[];\n  yCache: string[];\n  lastInput: number;\n  attractAt: number;\n}\n\nexport function DepthChart({\n  bids,\n  asks,\n  range,\n  formatPrice = defaultFormatPrice,\n  formatSize = defaultFormatSize,\n  probe,\n  height = 320,\n  ariaLabel = \"Order book depth\",\n  tone: toneProp,\n  attract = false,\n  className,\n}: DepthChartProps) {\n  const { pal, reduce, vars } = useChartTheme(toneProp);\n  const announcer = useRef<AnnouncerHandle>(null);\n  const tipRef = useRef<TooltipHandle>(null);\n  const wrapperRef = useRef<HTMLDivElement>(null);\n  const midRef = useRef<HTMLDivElement>(null);\n  const legendRef = useRef<HTMLDivElement>(null);\n  const xPool = useRef<(HTMLSpanElement | null)[]>([]);\n  const yPool = useRef<(HTMLSpanElement | null)[]>([]);\n  const rectRef = useRef<DOMRect | null>(null);\n\n  const book = useMemo(() => prepareBook(bids, asks), [bids, asks]);\n\n  const cfg = useRef({ book, range, reduce, pal, formatPrice, formatSize, attract });\n  useEffect(() => {\n    cfg.current = { book, range, reduce, pal, formatPrice, formatSize, attract };\n  });\n\n  const st = useRef<Run>({\n    tmpB: new Float32Array(0),\n    tmpA: new Float32Array(0),\n    bidDisp: new Float32Array(0),\n    askDisp: new Float32Array(0),\n    ready: false,\n    yMax: 0,\n    enter: 0,\n    probe: probe ?? null,\n    source: probe ? \"prop\" : null,\n    plot: { l: 0, r: 0, t: 0, b: 0 },\n    view: { lo: 0, hi: 1 },\n    xCache: [],\n    yCache: [],\n    lastInput: 0,\n    attractAt: 0,\n  });\n  const probeRef = useRef<(pr: Run[\"probe\"], source: Run[\"source\"]) => void>(() => {});\n\n  const { rootRef, hostRef, canvasRef, wake } = useChartCanvas(({ ctx, w, h, dt }) => {\n    const s = st.current;\n    const c = cfg.current;\n    const p = c.pal;\n    const B = c.book;\n    if (!B.bids.length || !B.asks.length) return false;\n    const plot = { l: PAD_LEFT, r: w - PAD_RIGHT, t: TOP, b: h - BOTTOM };\n    s.plot = plot;\n    const pW = plot.r - plot.l;\n    const half = c.range ?? Math.max(B.mid - B.bids[B.bids.length - 1].price, B.asks[B.asks.length - 1].price - B.mid) / B.mid;\n    const lo = B.mid * (1 - half);\n    const hi = B.mid * (1 + half);\n    s.view = { lo, hi };\n    const xOf = (price: number) => plot.l + ((price - lo) / (hi - lo)) * pW;\n\n    // Depth sampled per pixel column, each column easing to the new book, so updates glide.\n    const cols = Math.max(2, Math.floor(pW / SAMPLE_PX));\n    if (s.bidDisp.length !== cols) {\n      s.bidDisp = new Float32Array(cols);\n      s.askDisp = new Float32Array(cols);\n      s.ready = false;\n    }\n    let moving = false;\n    let maxTarget = 0;\n    const midX = xOf(B.mid);\n    // One merge pass per side: columns walk outward from mid as the book does. O(columns + levels).\n    const tB = s.tmpB.length === cols ? s.tmpB : (s.tmpB = new Float32Array(cols));\n    const tA = s.tmpA.length === cols ? s.tmpA : (s.tmpA = new Float32Array(cols));\n    tB.fill(0);\n    tA.fill(0);\n    const colPrice = (k: number) => lo + (k / (cols - 1)) * (hi - lo);\n    let bi = -1;\n    for (let k = cols - 1; k >= 0; k--) {\n      const price = colPrice(k);\n      if (price > B.mid) continue;\n      while (bi + 1 < B.bids.length && B.bids[bi + 1].price >= price) bi++;\n      tB[k] = bi >= 0 ? B.cumB[bi] : 0;\n    }\n    let ai = -1;\n    for (let k = 0; k < cols; k++) {\n      const price = colPrice(k);\n      if (price <= B.mid) continue;\n      while (ai + 1 < B.asks.length && B.asks[ai + 1].price <= price) ai++;\n      tA[k] = ai >= 0 ? B.cumA[ai] : 0;\n    }\n    for (let k = 0; k < cols; k++) maxTarget = Math.max(maxTarget, tB[k], tA[k]);\n    for (let k = 0; k < cols; k++) {\n      if (!s.ready || c.reduce) {\n        s.bidDisp[k] = tB[k];\n        s.askDisp[k] = tA[k];\n      } else {\n        s.bidDisp[k] = damp(s.bidDisp[k], tB[k], DEPTH_TAU, dt);\n        s.askDisp[k] = damp(s.askDisp[k], tA[k], DEPTH_TAU, dt);\n        if (Math.abs(s.bidDisp[k] - tB[k]) + Math.abs(s.askDisp[k] - tA[k]) > maxTarget * 1e-4 + 1e-6) moving = true;\n      }\n    }\n    // Y range: expands at once, contracts slowly and never clips (the live-line rule).\n    const target = maxTarget * 1.1;\n    if (!s.ready || c.reduce || target > s.yMax) s.yMax = target;\n    else if (target < s.yMax) {\n      const pxPer = (plot.b - plot.t) / s.yMax;\n      const cap = CONTRACT_PX / pxPer;\n      s.yMax -= Math.min(cap, (s.yMax - target) * (1 - Math.exp(-dt / RANGE_TAU)));\n      if (s.yMax - target > target * 1e-4) moving = true;\n    }\n    s.ready = true;\n    const yOf = (d: number) => plot.b - (d / Math.max(1e-9, s.yMax)) * (plot.b - plot.t);\n\n    s.enter = c.reduce ? 1 : Math.min(1, s.enter + (dt * 1000) / ENTER_MS);\n    const e = easeOut(s.enter);\n\n    // Grid.\n    const yt = niceTicks(0, s.yMax, 4);\n    ctx.strokeStyle = p.hair;\n    ctx.lineWidth = 1;\n    ctx.beginPath();\n    for (const v of yt) {\n      if (v <= 0) continue;\n      ctx.moveTo(plot.l, crisp(yOf(v)));\n      ctx.lineTo(plot.r, crisp(yOf(v)));\n    }\n    ctx.stroke();\n    writeLabels(yPool.current, s.yCache, yt.map((v) => ({ text: c.formatSize(v), x: plot.l - 8, y: yOf(v), ax: -100 })));\n    const xt = niceTicks(lo, hi, Math.max(3, Math.floor(pW / 90)));\n    writeLabels(xPool.current, s.xCache, xt.map((v) => ({ text: c.formatPrice(v), x: xOf(v), y: plot.b + 13, ax: -50 })));\n\n    // Areas grow outward from mid during the entrance.\n    const reachL = midX - (midX - plot.l) * e;\n    const reachR = midX + (plot.r - midX) * e;\n    const side = (disp: Float32Array, fill: string, line: string, fromMid: boolean) => {\n      ctx.save();\n      ctx.beginPath();\n      ctx.rect(fromMid ? reachL : midX, 0, fromMid ? midX - reachL : reachR - midX, h);\n      ctx.clip();\n      ctx.beginPath();\n      let started = false;\n      for (let k = 0; k < cols; k++) {\n        const x = plot.l + (k / (cols - 1)) * pW;\n        const d = disp[k];\n        if (d <= 0) continue;\n        if (!started) {\n          ctx.moveTo(x, plot.b);\n          started = true;\n        }\n        ctx.lineTo(x, yOf(d));\n      }\n      if (!started) {\n        ctx.restore();\n        return;\n      }\n      ctx.save();\n      ctx.lineTo(fromMid ? midX : plot.r, plot.b);\n      ctx.closePath();\n      ctx.fillStyle = fill;\n      ctx.fill();\n      ctx.restore();\n      ctx.beginPath();\n      started = false;\n      for (let k = 0; k < cols; k++) {\n        const x = plot.l + (k / (cols - 1)) * pW;\n        const d = disp[k];\n        if (d <= 0) continue;\n        if (!started) {\n          ctx.moveTo(x, yOf(d));\n          started = true;\n        } else ctx.lineTo(x, yOf(d));\n      }\n      ctx.lineWidth = 1.5;\n      ctx.lineJoin = \"round\";\n      ctx.strokeStyle = line;\n      ctx.stroke();\n      ctx.restore();\n    };\n    side(s.bidDisp, withAlpha(p.text, 0.1), withAlpha(p.text, 0.78), true);\n    side(s.askDisp, withAlpha(p.accent, 0.14), p.accent, false);\n\n    // Mid line and the spread pill.\n    ctx.save();\n    ctx.setLineDash([3, 3]);\n    ctx.strokeStyle = p.textSoft;\n    ctx.beginPath();\n    ctx.moveTo(crisp(midX), plot.t - 4);\n    ctx.lineTo(crisp(midX), plot.b);\n    ctx.stroke();\n    ctx.restore();\n    const mid = midRef.current;\n    if (mid) {\n      const mw = Number(mid.dataset.w) || mid.offsetWidth;\n      // Centred on mid, but never over the legend.\n      const legendR = (legendRef.current?.offsetWidth ?? 0) + 12;\n      mid.style.transform = `translate3d(${clamp(midX - mw / 2, Math.max(plot.l, legendR), plot.r - mw).toFixed(1)}px, ${(plot.t - 30).toFixed(1)}px, 0)`;\n    }\n\n    // Probe: the cost of walking the book to a level.\n    const tip = tipRef.current;\n    if (s.probe) {\n      const levels = s.probe.side === \"bid\" ? B.bids : B.asks;\n      const lvl = clamp(s.probe.level, 0, levels.length - 1);\n      const r = walk(B, s.probe.side, lvl);\n      const x = xOf(r.price);\n      const y = yOf(r.size);\n      ctx.strokeStyle = p.textSoft;\n      ctx.lineWidth = 1;\n      ctx.beginPath();\n      ctx.moveTo(crisp(x), plot.t);\n      ctx.lineTo(crisp(x), plot.b);\n      ctx.moveTo(x, crisp(y));\n      ctx.lineTo(midX, crisp(y));\n      ctx.stroke();\n      // The average fill sits between mid and the last level touched.\n      const vx = xOf(r.vwap);\n      ctx.fillStyle = s.probe.side === \"ask\" ? p.accentInk : p.text;\n      ctx.beginPath();\n      ctx.moveTo(vx, plot.b - 1);\n      ctx.lineTo(vx - 4, plot.b + 5);\n      ctx.lineTo(vx + 4, plot.b + 5);\n      ctx.closePath();\n      ctx.fill();\n      ctx.beginPath();\n      ctx.arc(x, y, 4, 0, Math.PI * 2);\n      ctx.fillStyle = s.probe.side === \"ask\" ? p.accent : p.text;\n      ctx.fill();\n      ctx.lineWidth = 2;\n      ctx.strokeStyle = p.stage;\n      ctx.stroke();\n      if (tip?.el) {\n        const pos = placeProbeTooltip(s.probe.side, x, y, tip.size.w, tip.size.h, w, h, plot.t);\n        tip.el.style.transform = `translate3d(${pos.x}px, ${pos.y}px, 0)`;\n      }\n    }\n\n    if (c.attract && !c.reduce && (!s.lastInput || clock() - s.lastInput > ATTRACT_IDLE_MS)) {\n      if (clock() - s.attractAt > ATTRACT_STEP_MS) {\n        s.attractAt = clock();\n        const sideNow = s.probe?.side ?? \"ask\";\n        const levels = sideNow === \"bid\" ? B.bids : B.asks;\n        const next = (s.probe?.level ?? -1) + 1;\n        probeRef.current(next >= Math.min(levels.length, 12) ? { side: sideNow === \"bid\" ? \"ask\" : \"bid\", level: 0 } : { side: sideNow, level: next }, \"attract\");\n      }\n      return true;\n    }\n    return moving || s.enter < 1;\n  });\n\n  const tooltipFor = (pr: NonNullable<Run[\"probe\"]>): TooltipContent | null => {\n    const levels = pr.side === \"bid\" ? book.bids : book.asks;\n    if (!levels.length) return null;\n    const lvl = clamp(pr.level, 0, levels.length - 1);\n    const r = walk(book, pr.side, lvl);\n    return {\n      key: `${pr.side}${lvl}|${r.size}|${r.vwap}|${pal.text}`,\n      title: `${pr.side === \"bid\" ? \"Sell into bids\" : \"Buy through asks\"} · ${lvl + 1} level${lvl ? \"s\" : \"\"}`,\n      rows: [\n        { key: \"s\", label: \"Size\", value: formatSize(r.size), color: pr.side === \"ask\" ? pal.accent : pal.text },\n        { key: \"v\", label: \"Avg fill\", value: formatPrice(r.vwap) },\n        { key: \"i\", label: \"Impact\", value: `${formatSigned(r.impactBp, (n) => formatNumber(n, 1))} bp`, strong: false },\n        { key: \"l\", label: \"Last level\", value: formatPrice(r.price), strong: false },\n      ],\n    };\n  };\n\n  const setProbe = (pr: Run[\"probe\"], source: Run[\"source\"]) => {\n    const s = st.current;\n    const same = (!pr && !s.probe) || (pr && s.probe && pr.side === s.probe.side && pr.level === s.probe.level);\n    s.probe = pr;\n    s.source = pr ? source : null;\n    tipRef.current?.set(pr ? tooltipFor(pr) : null);\n    if (!same && pr && source === \"keyboard\") {\n      const r = walk(book, pr.side, pr.level);\n      announcer.current?.say(`${pr.side === \"bid\" ? \"Selling\" : \"Buying\"} ${formatSize(r.size)} fills at ${formatPrice(r.vwap)} on average, ${formatNumber(Math.abs(r.impactBp), 1)} basis points from mid`);\n    }\n    wake();\n  };\n  useEffect(() => {\n    probeRef.current = setProbe;\n  });\n\n  // Live books: keep the probe's tooltip current as levels change.\n  useEffect(() => {\n    const s = st.current;\n    if (s.probe) tipRef.current?.set(tooltipFor(s.probe));\n    wake();\n    // eslint-disable-next-line react-hooks/exhaustive-deps\n  }, [book, range, pal, reduce, attract, wake]);\n\n  useEffect(() => {\n    if (probe === undefined) return;\n    setProbe(probe, probe ? \"prop\" : null);\n    // eslint-disable-next-line react-hooks/exhaustive-deps\n  }, [probe?.side, probe?.level]);\n\n  useEffect(() => {\n    if (midRef.current) midRef.current.dataset.w = String(midRef.current.offsetWidth);\n  });\n\n  const onPointerMove = (e: PointerEvent<HTMLDivElement>) => {\n    st.current.lastInput = clock();\n    const rect = rectRef.current ?? wrapperRef.current?.getBoundingClientRect();\n    if (!rect) return;\n    const s = st.current;\n    const x = e.clientX - rect.left;\n    if (x < s.plot.l || x > s.plot.r) {\n      setProbe(null, null);\n      return;\n    }\n    const price = s.view.lo + ((x - s.plot.l) / (s.plot.r - s.plot.l)) * (s.view.hi - s.view.lo);\n    const sideNow: \"bid\" | \"ask\" = price <= book.mid ? \"bid\" : \"ask\";\n    const levels = sideNow === \"bid\" ? book.bids : book.asks;\n    // The deepest level the pointer has reached on that side.\n    let lvl = 0;\n    for (let i = 0; i < levels.length; i++) {\n      if (sideNow === \"bid\" ? levels[i].price >= price : levels[i].price <= price) lvl = i;\n      else break;\n    }\n    setProbe({ side: sideNow, level: lvl }, \"pointer\");\n  };\n\n  const onKeyDown = (e: KeyboardEvent<HTMLDivElement>) => {\n    const s = st.current;\n    s.lastInput = clock();\n    const cur = s.probe && s.source !== \"attract\" ? s.probe : null;\n    if (e.key === \"ArrowLeft\" || e.key === \"ArrowRight\") {\n      e.preventDefault();\n      // Left walks away from mid on the bid side, right on the ask side.\n      const dir = e.key === \"ArrowLeft\" ? \"bid\" : \"ask\";\n      if (!cur) {\n        setProbe({ side: dir, level: 0 }, \"keyboard\");\n        return;\n      }\n      if (cur.side === dir) setProbe({ side: dir, level: Math.min(cur.level + (e.shiftKey ? 5 : 1), (dir === \"bid\" ? book.bids : book.asks).length - 1) }, \"keyboard\");\n      else if (cur.level > 0) setProbe({ side: cur.side, level: Math.max(0, cur.level - (e.shiftKey ? 5 : 1)) }, \"keyboard\");\n      else setProbe({ side: dir, level: 0 }, \"keyboard\");\n    } else if (e.key === \"Home\" || e.key === \"End\") {\n      e.preventDefault();\n      // Home: the touch on the current side. End: the deepest level on it.\n      const sideNow = cur?.side ?? \"ask\";\n      const levels = sideNow === \"bid\" ? book.bids : book.asks;\n      setProbe({ side: sideNow, level: e.key === \"Home\" ? 0 : Math.max(0, levels.length - 1) }, \"keyboard\");\n    } else if (e.key === \"Escape\") setProbe(null, null);\n  };\n\n  // A live book changes often; the table twin follows at low priority so it never blocks a frame.\n  const tableBook = useDeferredValue(book);\n  const tableRows = useMemo(\n    () => [\n      ...tableBook.bids.map((l, i) => [\"Bid\", formatPrice(l.price), formatSize(l.size), formatSize(tableBook.cumB[i])]),\n      ...tableBook.asks.map((l, i) => [\"Ask\", formatPrice(l.price), formatSize(l.size), formatSize(tableBook.cumA[i])]),\n    ],\n    [tableBook, formatPrice, formatSize],\n  );\n  const tableCols = useMemo(() => [\"Side\", \"Price\", \"Size\", \"Cumulative\"], []);\n  const spreadBp = book.mid ? (book.spread / book.mid) * 1e4 : 0;\n\n  return (\n    <div ref={rootRef} data-loop=\"idle\" className={cn(\"relative w-full select-none text-[color:var(--bjork-text)]\", className)} style={{ ...vars, height }}>\n      <div\n        ref={wrapperRef}\n        role=\"group\"\n        aria-roledescription=\"chart\"\n        aria-label={`${ariaLabel}. Left walks down the bids, right walks up the asks, Home and End jump to the touch and the deepest level, reading the size, average fill and impact.`}\n        tabIndex={0}\n        onPointerEnter={() => {\n          if (wrapperRef.current) rectRef.current = wrapperRef.current.getBoundingClientRect();\n        }}\n        onPointerMove={onPointerMove}\n        onPointerDown={(e) => {\n          if (wrapperRef.current) rectRef.current = wrapperRef.current.getBoundingClientRect();\n          if (e.pointerType === \"touch\") onPointerMove(e);\n        }}\n        onPointerLeave={(e) => {\n          // A touch tap fires leave right after up; keep the probe until the next tap.\n          if (e.pointerType !== \"touch\") setProbe(null, null);\n        }}\n        onKeyDown={onKeyDown}\n        className={cn(\"absolute inset-0 cursor-crosshair touch-pan-y rounded-[10px]\", chartFocusRing)}\n      >\n        <div ref={hostRef} className=\"absolute inset-0\">\n          <canvas\n            ref={canvasRef}\n            role=\"img\"\n            aria-label={`${ariaLabel}: mid ${formatPrice(book.mid)}, spread ${formatPrice(book.spread)}, ${formatSize(book.cumB[book.cumB.length - 1] ?? 0)} bid and ${formatSize(book.cumA[book.cumA.length - 1] ?? 0)} offered`}\n            className=\"pointer-events-none absolute left-0 top-0\"\n          />\n        </div>\n        {/* Legend keys: line for each side. */}\n        <div ref={legendRef} aria-hidden=\"true\" className=\"pointer-events-none absolute left-0 top-0 flex items-center gap-4 font-bjork-alpha text-[11px] font-medium leading-3 text-[color:var(--bjork-text-medium)]\">\n          <span className=\"inline-flex items-center gap-1.5\">\n            <span className=\"inline-block h-[2px] w-2.5 rounded-[1px] bg-[color:var(--bjork-text-medium)]\" />\n            Bids\n          </span>\n          <span className=\"inline-flex items-center gap-1.5\">\n            <span className=\"inline-block h-[2px] w-2.5 rounded-[1px] bg-[color:var(--bjork-accent)]\" />\n            Asks\n          </span>\n        </div>\n        <div\n          ref={midRef}\n          aria-hidden=\"true\"\n          className={`pointer-events-none absolute left-0 top-0 flex h-[22px] items-center gap-2 whitespace-nowrap rounded-[11px] ${chartTagEdge} bg-[color:var(--bjork-surface-hover)] px-2.5 font-mono text-[11px] leading-none tabular-nums`}\n        >\n          <span className=\"text-[color:var(--bjork-text)] [text-box:trim-both_cap_alphabetic]\">{formatPrice(book.mid)}</span>\n          <span className=\"text-[color:var(--bjork-text-soft)] [text-box:trim-both_cap_alphabetic]\">\n            spread {formatPrice(book.spread)} · {formatNumber(spreadBp, 1)} bp\n          </span>\n        </div>\n        <LabelPool count={X_LABELS} pool={xPool} />\n        <LabelPool count={Y_LABELS} pool={yPool} />\n        <HoverTooltip ref={tipRef} onMeasure={wake} />\n      </div>\n      <ChartTable caption={ariaLabel} columns={tableCols} rows={tableRows} />\n      <ChartAnnouncer ref={announcer} />\n    </div>\n  );\n}\n\n// A seeded, slowly evolving order book for demos. next() returns the following snapshot.\nexport function createOrderBook(seed: number, opts?: { mid?: number; tick?: number; levels?: number }) {\n  const rnd = mulberry32(seed);\n  const tick = opts?.tick ?? 0.05;\n  const levels = opts?.levels ?? 40;\n  let mid = opts?.mid ?? 101.2;\n  const sizeAt = (k: number) => Math.round((40 + rnd() * 160) * (1 + k * 0.08) * (rnd() < 0.07 ? 4 : 1));\n  let bidSizes = Array.from({ length: levels }, (_, k) => sizeAt(k));\n  let askSizes = Array.from({ length: levels }, (_, k) => sizeAt(k));\n  const snapshot = () => {\n    const bestBid = Math.floor(mid / tick) * tick;\n    const bestAsk = bestBid + tick;\n    return {\n      bids: bidSizes.map((size, k) => ({ price: +(bestBid - k * tick).toFixed(4), size })),\n      asks: askSizes.map((size, k) => ({ price: +(bestAsk + k * tick).toFixed(4), size })),\n    };\n  };\n  return {\n    snapshot,\n    next() {\n      mid += (rnd() - 0.5) * tick * 1.2;\n      const jitter = (arr: number[]) => arr.map((sz, k) => Math.max(5, Math.round(sz * (0.86 + rnd() * 0.28) + (rnd() < 0.03 ? sizeAt(k) : 0))));\n      bidSizes = jitter(bidSizes);\n      askSizes = jitter(askSizes);\n      return snapshot();\n    },\n  };\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/charts/depth-chart.tsx"
    },
    {
      "path": "lib/utils.ts",
      "content": "import { clsx, type ClassValue } from \"clsx\"\nimport { twMerge } from \"tailwind-merge\"\n\nexport function cn(...inputs: ClassValue[]) {\n  return twMerge(clsx(inputs))\n}\n",
      "type": "registry:lib",
      "target": "@lib/utils.ts"
    },
    {
      "path": "components/bjork-ui/_core/palette.ts",
      "content": "export type BjorkTone = \"dark\" | \"light\";\n\n// Canvas, WebGL and SVG attribute colours. DOM code uses the CSS tokens with these as fallbacks.\nexport const BJORK_PALETTE = {\n  dark: {\n    bg: \"#050505\", stage: \"#111111\", surface: \"#121212\", raised: \"#161616\", active: \"#202020\",\n    border: \"#232323\", borderStrong: \"#343434\",\n    text: \"#ededed\", textMedium: \"rgba(237,237,237,0.72)\", textMuted: \"rgba(237,237,237,0.6)\",\n    textSoft: \"rgba(237,237,237,0.5)\", textFaint: \"rgba(237,237,237,0.22)\", hair: \"rgba(237,237,237,0.12)\",\n    accent: \"#ec5c13\", accentInk: \"#ec5c13\", accentFill: \"#b84a12\", accentSoft: \"rgba(236,92,19,0.12)\", accentMuted: \"rgba(236,92,19,0.24)\",\n    accentFg: \"#fff2ea\", success: \"#4cc38a\", warning: \"#f2b544\", error: \"#ff5c4d\",\n  },\n  light: {\n    bg: \"#f7f5ef\", stage: \"#f7f5ef\", surface: \"#fffcf6\", raised: \"#f5efe3\", active: \"#efe7d8\",\n    border: \"#eee6db\", borderStrong: \"#e1d7c8\",\n    text: \"#171717\", textMedium: \"rgba(23,23,23,0.78)\", textMuted: \"rgba(23,23,23,0.68)\",\n    textSoft: \"rgba(23,23,23,0.62)\", textFaint: \"rgba(23,23,23,0.22)\", hair: \"rgba(23,23,23,0.10)\",\n    accent: \"#ec7d43\", accentInk: \"#b4531f\", accentFill: \"#ec7d43\", accentSoft: \"rgba(236,125,67,0.10)\", accentMuted: \"rgba(236,125,67,0.20)\",\n    accentFg: \"#3f2112\", success: \"#1f8a55\", warning: \"#a86b00\", error: \"#c8361f\",\n  },\n} as const;\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/palette.ts"
    },
    {
      "path": "components/bjork-ui/_core/random.ts",
      "content": "// Seeded randomness and noise. Deterministic for a given seed, so previews and tests repeat.\n\n// Small fast PRNG. Returns floats in [0, 1).\nexport function mulberry32(seed: number): () => number {\n  let a = seed >>> 0;\n  return () => {\n    a = (a + 0x6d2b79f5) >>> 0;\n    let t = a;\n    t = Math.imul(t ^ (t >>> 15), t | 1);\n    t ^= t + Math.imul(t ^ (t >>> 7), t | 61);\n    return ((t ^ (t >>> 14)) >>> 0) / 4294967296;\n  };\n}\n\n// FNV-1a 32-bit.\nexport function hashString(s: string): number {\n  let h = 0x811c9dc5;\n  for (let i = 0; i < s.length; i++) {\n    h ^= s.charCodeAt(i);\n    h = Math.imul(h, 0x01000193);\n  }\n  return h >>> 0;\n}\n\n// Integer lattice hash to [-1, 1].\nfunction latticeHash(seed: number, x: number, y = 0): number {\n  let h = Math.imul(x | 0, 374761393) ^ Math.imul(y | 0, 668265263) ^ Math.imul(seed | 0, 2246822519);\n  h = Math.imul(h ^ (h >>> 13), 1274126177);\n  h ^= h >>> 16;\n  return ((h >>> 0) / 4294967295) * 2 - 1;\n}\n\nfunction smooth(t: number): number {\n  return t * t * (3 - 2 * t);\n}\n\nexport function valueNoise1D(seed: number): (x: number) => number {\n  return (x: number) => {\n    const i = Math.floor(x);\n    const f = x - i;\n    const a = latticeHash(seed, i);\n    const b = latticeHash(seed, i + 1);\n    return a + (b - a) * smooth(f);\n  };\n}\n\nexport function fbm1D(seed: number, octaves = 3): (x: number) => number {\n  const layers = Array.from({ length: octaves }, (_, o) => valueNoise1D(seed + o * 101));\n  let norm = 0;\n  for (let o = 0; o < octaves; o++) norm += 0.5 ** o;\n  return (x: number) => {\n    let sum = 0;\n    let amp = 1;\n    let freq = 1;\n    for (let o = 0; o < octaves; o++) {\n      sum += amp * layers[o](x * freq);\n      amp *= 0.5;\n      freq *= 2;\n    }\n    return sum / norm;\n  };\n}\n\nexport function valueNoise2D(seed: number): (x: number, y: number) => number {\n  return (x: number, y: number) => {\n    const xi = Math.floor(x);\n    const yi = Math.floor(y);\n    const fx = smooth(x - xi);\n    const fy = smooth(y - yi);\n    const a = latticeHash(seed, xi, yi);\n    const b = latticeHash(seed, xi + 1, yi);\n    const c = latticeHash(seed, xi, yi + 1);\n    const d = latticeHash(seed, xi + 1, yi + 1);\n    const top = a + (b - a) * fx;\n    const bottom = c + (d - c) * fx;\n    return top + (bottom - top) * fy;\n  };\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/random.ts"
    },
    {
      "path": "components/bjork-ui/charts/_kit/canvas.ts",
      "content": "\"use client\";\n\n// Canvas plumbing shared by the Charts collection. One hook gives a chart a measured host, a\n// DPR-capped canvas that follows it, and a draw loop that pauses offscreen and idles when settled.\n\nimport { useCallback, useEffect, useRef, type RefObject } from \"react\";\nimport { useVisibleLoop } from \"@/components/bjork-ui/_core/loop\";\nimport { sizeCanvas, useElementSize } from \"@/components/bjork-ui/_core/canvas\";\nimport { cubicBezier, ease } from \"@/components/bjork-ui/_core/motion\";\n\nexport interface ChartFrame {\n  ctx: CanvasRenderingContext2D;\n  w: number;\n  h: number;\n  dt: number;\n  t: number;\n}\n\n/**\n * `draw` runs inside `useVisibleLoop`. Return true to keep animating, false to go idle until `wake()`.\n * The loop root is `rootRef` (gets `data-loop`). The canvas is sized to `hostRef`.\n */\nexport function useChartCanvas(draw: (f: ChartFrame) => boolean) {\n  const rootRef = useRef<HTMLDivElement>(null);\n  const hostRef = useRef<HTMLDivElement>(null);\n  const canvasRef = useRef<HTMLCanvasElement>(null);\n  const size = useElementSize(hostRef);\n  const sizeRef = useRef({ w: 0, h: 0, dpr: 1 });\n  const drawRef = useRef(draw);\n  useEffect(() => {\n    drawRef.current = draw;\n  });\n\n  const frame = useCallback((dt: number, t: number) => {\n    const canvas = canvasRef.current;\n    const { w, h, dpr } = sizeRef.current;\n    if (!canvas || !w || !h) return true;\n    const ctx = canvas.getContext(\"2d\");\n    if (!ctx) return false;\n    ctx.setTransform(dpr, 0, 0, dpr, 0, 0);\n    ctx.clearRect(0, 0, w, h);\n    return drawRef.current({ ctx, w, h, dt, t });\n  }, []);\n\n  const { wake } = useVisibleLoop(rootRef as RefObject<HTMLElement | null>, frame);\n\n  useEffect(() => {\n    const canvas = canvasRef.current;\n    if (!canvas || !size.width || !size.height) return;\n    sizeRef.current = { w: size.width, h: size.height, dpr: sizeCanvas(canvas, size.width, size.height) };\n    wake();\n  }, [size.width, size.height, wake]);\n\n  return { rootRef, hostRef, canvasRef, size, wake };\n}\n\n// The house ease-out for entrances, usable in rAF code.\nexport const easeOut = cubicBezier(...(ease.out as unknown as [number, number, number, number]));\nexport const easeInOut = cubicBezier(...(ease.inOut as unknown as [number, number, number, number]));\n\n// A 45 degree hatch pattern in `color`, for counterfactual and loss regions.\nconst hatchCache = new Map<string, CanvasPattern | null>();\nexport function hatchPattern(ctx: CanvasRenderingContext2D, color: string, gap = 5, width = 1): CanvasPattern | null {\n  const key = `${color}|${gap}|${width}`;\n  if (hatchCache.has(key)) return hatchCache.get(key)!;\n  if (typeof document === \"undefined\") return null;\n  const tile = document.createElement(\"canvas\");\n  const s = gap * 2;\n  tile.width = s * 2;\n  tile.height = s * 2;\n  const c = tile.getContext(\"2d\");\n  if (!c) return null;\n  c.scale(2, 2);\n  c.strokeStyle = color;\n  c.lineWidth = width;\n  c.beginPath();\n  for (let k = -s; k <= s * 2; k += gap) {\n    c.moveTo(k, s);\n    c.lineTo(k + s, 0);\n  }\n  c.stroke();\n  const pattern = ctx.createPattern(tile, \"repeat\");\n  pattern?.setTransform(new DOMMatrix().scale(0.5, 0.5));\n  hatchCache.set(key, pattern);\n  return pattern;\n}\n\n// Rounded rect path with independent top and bottom radii (bars: round data end, square baseline).\nexport function roundRectPath(\n  ctx: CanvasRenderingContext2D,\n  x: number,\n  y: number,\n  w: number,\n  h: number,\n  rTop: number,\n  rBottom = 0,\n) {\n  if (w <= 0 || h <= 0) return;\n  const rt = Math.min(rTop, w / 2, h / 2);\n  const rb = Math.min(rBottom, w / 2, h / 2);\n  ctx.moveTo(x + rt, y);\n  ctx.lineTo(x + w - rt, y);\n  if (rt) ctx.arcTo(x + w, y, x + w, y + rt, rt);\n  ctx.lineTo(x + w, y + h - rb);\n  if (rb) ctx.arcTo(x + w, y + h, x + w - rb, y + h, rb);\n  ctx.lineTo(x + rb, y + h);\n  if (rb) ctx.arcTo(x, y + h, x, y + h - rb, rb);\n  ctx.lineTo(x, y + rt);\n  if (rt) ctx.arcTo(x, y, x + rt, y, rt);\n  ctx.closePath();\n}\n\nexport interface PlacedLabel {\n  text: string;\n  x: number;\n  y: number;\n  /** translate percentages applied after the position, e.g. -50 to centre. */\n  ax?: number;\n  ay?: number;\n  opacity?: number;\n}\n\n// Writes a pool of absolutely positioned label spans from the loop: text only when it changes,\n// position by transform only. Unused spans hide.\nexport function writeLabels(els: (HTMLElement | null)[], cache: string[], items: PlacedLabel[]) {\n  for (let i = 0; i < els.length; i++) {\n    const el = els[i];\n    if (!el) continue;\n    const it = items[i];\n    if (!it) {\n      if (el.style.opacity !== \"0\") el.style.opacity = \"0\";\n      continue;\n    }\n    if (cache[i] !== it.text) {\n      cache[i] = it.text;\n      el.textContent = it.text;\n    }\n    el.style.opacity = String(it.opacity ?? 1);\n    el.style.transform = `translate3d(${it.x.toFixed(2)}px, ${it.y.toFixed(2)}px, 0) translate(${it.ax ?? 0}%, ${it.ay ?? -50}%)`;\n  }\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/charts/_kit/canvas.ts"
    },
    {
      "path": "components/bjork-ui/_core/loop.ts",
      "content": "\"use client\";\n\nimport { useCallback, useEffect, useMemo, useRef, type RefObject } from \"react\";\n\nexport interface VisibleLoopOptions {\n  enabled?: boolean;\n  fpsCap?: number;\n  rootMargin?: string;\n}\n\n/**\n * Runs `frame(dt, t)` on requestAnimationFrame while the element is near the viewport,\n * the tab is visible and `enabled` is not false. Return `false` from `frame` to go idle\n * until `wake()` is called. Writes `data-loop` on the element: running, idle or paused.\n */\nexport function useVisibleLoop(\n  ref: RefObject<HTMLElement | null>,\n  frame: (dt: number, t: number) => boolean | void,\n  opts?: VisibleLoopOptions,\n): { wake: () => void } {\n  const enabled = opts?.enabled !== false;\n  const fpsCap = opts?.fpsCap ?? 0;\n  const rootMargin = opts?.rootMargin ?? \"96px\";\n\n  const frameRef = useRef(frame);\n  useEffect(() => {\n    frameRef.current = frame;\n  }, [frame]);\n\n  const wakeRef = useRef<() => void>(() => {});\n  const wake = useCallback(() => wakeRef.current(), []);\n\n  useEffect(() => {\n    const el = ref.current;\n    if (!el || typeof window === \"undefined\") return;\n\n    let wants = true; // false once the frame callback returns false\n    let inView = false;\n    let raf = 0;\n    let last = 0;\n    let t = 0;\n    const minFrame = fpsCap > 0 ? 1000 / fpsCap : 0;\n\n    const canRun = () => enabled && inView && document.visibilityState === \"visible\";\n    const stop = () => {\n      if (raf) cancelAnimationFrame(raf);\n      raf = 0;\n    };\n\n    const update = () => {\n      if (!enabled) {\n        stop();\n        el.dataset.loop = \"paused\";\n        return;\n      }\n      if (!wants) {\n        stop();\n        el.dataset.loop = \"idle\";\n        return;\n      }\n      if (!canRun()) {\n        stop();\n        el.dataset.loop = \"paused\";\n        return;\n      }\n      el.dataset.loop = \"running\";\n      if (!raf) {\n        last = performance.now();\n        raf = requestAnimationFrame(tick);\n      }\n    };\n\n    const tick = (now: number) => {\n      raf = 0;\n      if (!canRun() || !wants) {\n        update();\n        return;\n      }\n      const elapsed = now - last;\n      if (minFrame && elapsed < minFrame - 0.5) {\n        raf = requestAnimationFrame(tick);\n        return;\n      }\n      last = now;\n      const dt = Math.min(0.05, Math.max(0, elapsed / 1000));\n      t += dt;\n      const keep = frameRef.current(dt, t);\n      if (keep === false) {\n        wants = false;\n        update();\n        return;\n      }\n      raf = requestAnimationFrame(tick);\n    };\n\n    const observer = new IntersectionObserver(\n      ([entry]) => {\n        inView = entry.isIntersecting;\n        update();\n      },\n      { rootMargin },\n    );\n    observer.observe(el);\n\n    const onVisibility = () => update();\n    document.addEventListener(\"visibilitychange\", onVisibility);\n\n    wakeRef.current = () => {\n      wants = true;\n      update();\n    };\n\n    update();\n\n    return () => {\n      stop();\n      observer.disconnect();\n      document.removeEventListener(\"visibilitychange\", onVisibility);\n      wakeRef.current = () => {};\n    };\n  }, [ref, enabled, fpsCap, rootMargin]);\n\n  return useMemo(() => ({ wake }), [wake]);\n}\n\n// matchMedia based check. False on the server.\nexport function isCoarsePointer(): boolean {\n  if (typeof window === \"undefined\" || typeof window.matchMedia !== \"function\") return false;\n  return window.matchMedia(\"(pointer: coarse)\").matches;\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/loop.ts"
    },
    {
      "path": "components/bjork-ui/_core/canvas.ts",
      "content": "\"use client\";\n\nimport { useEffect, useState, type RefObject } from \"react\";\nimport { isCoarsePointer } from \"./loop\";\n\n// Caps DPR at 1.5 on coarse pointers and 2 otherwise.\nexport function defaultMaxDpr(): number {\n  return isCoarsePointer() ? 1.5 : 2;\n}\n\n// Sets the backing size for a CSS box and returns the DPR used.\nexport function sizeCanvas(\n  canvas: HTMLCanvasElement,\n  cssW: number,\n  cssH: number,\n  maxDpr: number = defaultMaxDpr(),\n): number {\n  const dpr = Math.min(typeof window !== \"undefined\" ? window.devicePixelRatio || 1 : 1, maxDpr);\n  canvas.width = Math.max(1, Math.round(cssW * dpr));\n  canvas.height = Math.max(1, Math.round(cssH * dpr));\n  canvas.style.width = `${cssW}px`;\n  canvas.style.height = `${cssH}px`;\n  return dpr;\n}\n\n// Rounded size of an element, kept current with a ResizeObserver.\nexport function useElementSize(ref: RefObject<HTMLElement | null>): { width: number; height: number } {\n  const [size, setSize] = useState({ width: 0, height: 0 });\n\n  useEffect(() => {\n    const el = ref.current;\n    if (!el || typeof ResizeObserver === \"undefined\") return;\n    const observer = new ResizeObserver((entries) => {\n      const box = entries[0]?.contentRect;\n      if (!box) return;\n      const width = Math.round(box.width);\n      const height = Math.round(box.height);\n      setSize((prev) => (prev.width === width && prev.height === height ? prev : { width, height }));\n    });\n    observer.observe(el);\n    return () => observer.disconnect();\n  }, [ref]);\n\n  return size;\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/canvas.ts"
    },
    {
      "path": "components/bjork-ui/_core/motion.ts",
      "content": "// Shared springs, easings and durations. Components import these instead of inventing values.\n\nexport const springs = {\n  press: { type: \"spring\", stiffness: 500, damping: 30, mass: 0.6 },\n  snappy: { type: \"spring\", stiffness: 400, damping: 25, mass: 1 },\n  standard: { type: \"spring\", stiffness: 300, damping: 30, mass: 0.8 },\n  soft: { type: \"spring\", stiffness: 200, damping: 25, mass: 1.2 },\n  settle: { type: \"spring\", stiffness: 380, damping: 30, mass: 0.8 },\n  blurIn: { type: \"spring\", stiffness: 400, damping: 28, mass: 0.6 },\n} as const;\n\nexport const ease = {\n  out: [0.23, 1, 0.32, 1],\n  inOut: [0.77, 0, 0.175, 1],\n  drawer: [0.32, 0.72, 0, 1],\n} as const;\n\nexport const easeCss = {\n  out: \"cubic-bezier(0.23,1,0.32,1)\",\n  inOut: \"cubic-bezier(0.77,0,0.175,1)\",\n  drawer: \"cubic-bezier(0.32,0.72,0,1)\",\n} as const;\n\nexport const durations = { press: 140, tooltip: 160, menu: 200, panel: 280 } as const; // ms\n\n// Cubic bezier easing for canvas and rAF code. Returns progress y for input x in [0, 1].\nexport function cubicBezier(x1: number, y1: number, x2: number, y2: number): (t: number) => number {\n  const cx = 3 * x1;\n  const bx = 3 * (x2 - x1) - cx;\n  const ax = 1 - cx - bx;\n  const cy = 3 * y1;\n  const by = 3 * (y2 - y1) - cy;\n  const ay = 1 - cy - by;\n  const sampleX = (s: number) => ((ax * s + bx) * s + cx) * s;\n  const sampleY = (s: number) => ((ay * s + by) * s + cy) * s;\n  const sampleDX = (s: number) => (3 * ax * s + 2 * bx) * s + cx;\n\n  const solveX = (x: number) => {\n    let s = x;\n    for (let i = 0; i < 8; i++) {\n      const err = sampleX(s) - x;\n      if (Math.abs(err) < 1e-6) return s;\n      const d = sampleDX(s);\n      if (Math.abs(d) < 1e-6) break;\n      s -= err / d;\n    }\n    let lo = 0;\n    let hi = 1;\n    s = x;\n    while (lo < hi) {\n      const v = sampleX(s);\n      if (Math.abs(v - x) < 1e-6) return s;\n      if (x > v) lo = s;\n      else hi = s;\n      s = (lo + hi) / 2;\n      if (hi - lo < 1e-7) break;\n    }\n    return s;\n  };\n\n  return (t: number) => {\n    if (t <= 0) return 0;\n    if (t >= 1) return 1;\n    return sampleY(solveX(t));\n  };\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/motion.ts"
    },
    {
      "path": "components/bjork-ui/charts/_kit/chrome.tsx",
      "content": "\"use client\";\n\n// Shared chart chrome for the Charts collection: theme vars, the hover tooltip, legend keys and the\n// screen-reader table twin every chart ships with.\n\nimport { forwardRef, memo, useEffect, useImperativeHandle, useLayoutEffect, useRef, useState, type CSSProperties, type ReactNode } from \"react\";\nimport { useReducedMotion } from \"framer-motion\";\nimport { cn } from \"@/lib/utils\";\nimport { BJORK_PALETTE, type BjorkTone } from \"@/components/bjork-ui/_core/palette\";\nimport { useBjorkTone } from \"@/components/bjork-ui/_core/tone\";\nimport { LiveRegion } from \"@/components/bjork-ui/_core/a11y\";\nimport { surfaceVars } from \"@/components/bjork-ui/_core/surface\";\n\nexport type ChartPalette = (typeof BJORK_PALETTE)[BjorkTone];\n\n// Tokens a chart root writes so DOM overlays follow `tone` even outside a themed page.\nexport function chartVars(pal: ChartPalette): CSSProperties {\n  return {\n    ...surfaceVars(pal === BJORK_PALETTE.light ? \"light\" : \"dark\"),\n    \"--bjork-accent\": pal.accent,\n    \"--bjork-accent-ink\": pal.accentInk,\n    \"--bjork-accent-fill\": pal.accentFill,\n    \"--bjork-accent-soft\": pal.accentSoft,\n    \"--bjork-accent-foreground\": pal.accentFg,\n    \"--bjork-text\": pal.text,\n    \"--bjork-text-medium\": pal.textMedium,\n    \"--bjork-text-muted\": pal.textMuted,\n    \"--bjork-text-soft\": pal.textSoft,\n    \"--bjork-text-faint\": pal.textFaint,\n    \"--bjork-hair\": pal.hair,\n    \"--bjork-border\": pal.border,\n    \"--bjork-border-strong\": pal.borderStrong,\n    \"--bjork-surface\": pal.surface,\n    \"--bjork-surface-hover\": pal.raised,\n    \"--bjork-ring-offset\": pal.bg,\n    // The surface a chart sits on, for label halos and cut-outs. Override it on the root if needed.\n    \"--bjork-chart-bg\": pal.stage,\n    \"--bjork-success\": pal.success,\n    \"--bjork-warning\": pal.warning,\n    \"--bjork-error\": pal.error,\n  } as CSSProperties;\n}\n\n// Tone, palette, reduced motion and root vars in one call.\nexport function useChartTheme(toneProp?: BjorkTone) {\n  const tone = useBjorkTone(toneProp);\n  const pal = BJORK_PALETTE[tone];\n  const reduce = !!useReducedMotion();\n  return { tone, pal, reduce, vars: chartVars(pal) };\n}\n\n// Focus ring shared by every focusable plot surface.\nexport const chartFocusRing =\n  \"outline-none focus-visible:ring-2 focus-visible:ring-[color:var(--bjork-accent)] focus-visible:ring-offset-2 focus-visible:ring-offset-[color:var(--bjork-ring-offset)]\";\n\n// Mono label style: 10px Geist Mono, tabular, cap-trimmed.\nexport const chartMono = \"font-mono text-[10px] leading-none tabular-nums [text-box:trim-both_cap_alphabetic]\";\n\n// Floating chart surfaces follow the library canon (_core/surface.ts): a 1px border plus the inset light\n// shadow. Hover cards take the full surface shadow; small readout tags take the soft one. Colours come\n// from chartVars, so light and dark both follow the tone.\nexport const chartCardEdge = \"border border-[color:var(--bjork-border)] shadow-[var(--bjork-shadow-surface)]\";\nexport const chartTagEdge = \"border border-[color:var(--bjork-border)] shadow-[var(--bjork-shadow-soft)]\";\n\nexport interface TooltipRow {\n  key?: string;\n  label: ReactNode;\n  value: ReactNode;\n  color?: string;\n  dashed?: boolean;\n  strong?: boolean;\n}\n\n// The hover card. Values lead, labels follow, series keyed with a short line in the series colour.\n// Position it with `style.transform` from the caller; it never takes pointer events.\nexport const ChartTooltip = forwardRef<\n  HTMLDivElement,\n  { title?: ReactNode; rows: TooltipRow[]; visible: boolean; className?: string; style?: CSSProperties; tipKey?: string }\n>(function ChartTooltip({ title, rows, visible, className, style, tipKey }, ref) {\n  return (\n    <div\n      ref={ref}\n      data-key={tipKey}\n      role=\"presentation\"\n      aria-hidden=\"true\"\n      className={cn(\n        `pointer-events-none absolute left-0 top-0 z-10 min-w-[120px] rounded-[10px] ${chartCardEdge} bg-[color:var(--bjork-surface)] px-2.5 py-2 transition-opacity duration-150 ease-out`,\n        visible ? \"opacity-100\" : \"opacity-0\",\n        className,\n      )}\n      style={style}\n    >\n      {title !== undefined && (\n        <div className=\"mb-1.5 whitespace-nowrap font-mono text-[10px] uppercase leading-none tracking-[0.08em] text-[color:var(--bjork-text-soft)] [text-box:trim-both_cap_alphabetic]\">\n          {title}\n        </div>\n      )}\n      <div className=\"flex flex-col gap-[7px]\">\n        {rows.map((r, i) => (\n          <div key={r.key ?? i} className=\"flex items-center gap-2 whitespace-nowrap leading-none\">\n            {r.color && (\n              <span\n                aria-hidden=\"true\"\n                className=\"inline-block w-2.5 shrink-0\"\n                style={\n                  r.dashed\n                    ? { borderTop: `1.5px dashed ${r.color}`, height: 0 }\n                    : { background: r.color, height: 2, borderRadius: 1 }\n                }\n              />\n            )}\n            <span\n              className={cn(\n                \"font-mono text-[12px] tabular-nums [text-box:trim-both_cap_alphabetic]\",\n                r.strong === false ? \"text-[color:var(--bjork-text-medium)]\" : \"text-[color:var(--bjork-text)]\",\n              )}\n            >\n              {r.value}\n            </span>\n            <span className=\"ml-auto pl-3 font-bjork-alpha text-[11px] text-[color:var(--bjork-text-muted)] [text-box:trim-both_cap_alphabetic]\">\n              {r.label}\n            </span>\n          </div>\n        ))}\n      </div>\n    </div>\n  );\n});\n\n// Places a tooltip of size (tw, th) next to (x, y) inside a (w, h) box, flipping away from edges.\nexport function placeTooltip(\n  x: number,\n  y: number,\n  tw: number,\n  th: number,\n  w: number,\n  h: number,\n  gap = 12,\n): { x: number; y: number } {\n  let tx = x + gap;\n  if (tx + tw > w) tx = x - gap - tw;\n  if (tx < 0) tx = Math.max(0, Math.min(w - tw, x - tw / 2));\n  let ty = y - th - gap;\n  if (ty < 0) ty = Math.min(h - th, y + gap);\n  return { x: Math.round(tx), y: Math.round(Math.max(0, ty)) };\n}\n\nexport interface LegendItem {\n  id: string;\n  label: string;\n  color: string;\n  shape?: \"line\" | \"dash\" | \"rect\" | \"dot\";\n  muted?: boolean;\n}\n\n// A legend row. Keys mirror the mark: line for lines, rect for areas and bars.\nexport function ChartLegend({\n  items,\n  className,\n  onHover,\n  activeId,\n}: {\n  items: LegendItem[];\n  className?: string;\n  onHover?: (id: string | null) => void;\n  activeId?: string | null;\n}) {\n  return (\n    <div className={cn(\"flex flex-wrap items-center gap-x-4 gap-y-2\", className)}>\n      {items.map((it) => {\n        const dim = (activeId && activeId !== it.id) || it.muted;\n        return (\n          <span\n            key={it.id}\n            onPointerEnter={onHover ? () => onHover(it.id) : undefined}\n            onPointerLeave={onHover ? () => onHover(null) : undefined}\n            className={cn(\n              \"inline-flex items-center gap-1.5 font-bjork-alpha text-[11px] font-medium leading-3 transition-opacity duration-150 ease-out\",\n              dim ? \"opacity-45\" : \"opacity-100\",\n              \"text-[color:var(--bjork-text-medium)]\",\n            )}\n          >\n            <LegendKey color={it.color} shape={it.shape} />\n            {it.label}\n          </span>\n        );\n      })}\n    </div>\n  );\n}\n\nexport function LegendKey({ color, shape = \"rect\" }: { color: string; shape?: LegendItem[\"shape\"] }) {\n  if (shape === \"line\") return <span aria-hidden=\"true\" className=\"inline-block h-[2px] w-2.5 rounded-[1px]\" style={{ background: color }} />;\n  if (shape === \"dash\") return <span aria-hidden=\"true\" className=\"inline-block h-0 w-2.5\" style={{ borderTop: `1.5px dashed ${color}` }} />;\n  if (shape === \"dot\") return <span aria-hidden=\"true\" className=\"inline-block size-2 rounded-full\" style={{ background: color }} />;\n  return <span aria-hidden=\"true\" className=\"inline-block size-2 rounded-[2px]\" style={{ background: color }} />;\n}\n\n// The table twin. Every value the chart shows is reachable here without hovering.\n// Memoised: hover state re-renders the chart, never the table. Pass memoised rows.\nexport const ChartTable = memo(function ChartTable({\n  caption,\n  columns,\n  rows,\n}: {\n  caption: string;\n  columns: string[];\n  rows: (string | number)[][];\n}) {\n  return (\n    <table className=\"sr-only\">\n      <caption>{caption}</caption>\n      <thead>\n        <tr>\n          {columns.map((c) => (\n            <th key={c} scope=\"col\">\n              {c}\n            </th>\n          ))}\n        </tr>\n      </thead>\n      <tbody>\n        {rows.map((r, i) => (\n          <tr key={i}>\n            {r.map((cell, j) =>\n              j === 0 ? (\n                <th key={j} scope=\"row\">\n                  {cell}\n                </th>\n              ) : (\n                <td key={j}>{cell}</td>\n              ),\n            )}\n          </tr>\n        ))}\n      </tbody>\n    </table>\n  );\n});\n\n// A pool of absolutely positioned spans the draw loop fills through `writeLabels`.\nexport function LabelPool({\n  count,\n  pool,\n  className,\n}: {\n  count: number;\n  pool: { current: (HTMLSpanElement | null)[] };\n  className?: string;\n}) {\n  return (\n    <>\n      {Array.from({ length: count }).map((_, i) => (\n        <span\n          key={i}\n          ref={(el) => {\n            pool.current[i] = el;\n          }}\n          aria-hidden=\"true\"\n          className={cn(\n            \"pointer-events-none absolute left-0 top-0 whitespace-nowrap opacity-0\",\n            className ?? \"font-mono text-[10px] leading-none tabular-nums text-[color:var(--bjork-text-faint)] [text-box:trim-both_cap_alphabetic]\",\n          )}\n        />\n      ))}\n    </>\n  );\n}\n\nexport interface TooltipContent {\n  key: string;\n  title?: ReactNode;\n  rows: TooltipRow[];\n}\n\nexport interface TooltipHandle {\n  /** Shows `content`, or hides with `null`. Same key is a no-op. */\n  set: (content: TooltipContent | null) => void;\n  readonly el: HTMLDivElement | null;\n  /** Measured size of the current content. */\n  readonly size: { w: number; h: number };\n}\n\n// A tooltip that owns its state, so hovering re-renders only the tooltip, never the chart.\n// The chart positions it from its draw loop through `handle.el.style.transform`.\nexport const HoverTooltip = forwardRef<TooltipHandle, { onMeasure?: () => void; className?: string }>(function HoverTooltip(\n  { onMeasure, className },\n  ref,\n) {\n  const [state, setState] = useState<{ content: TooltipContent | null; last: TooltipContent | null }>({ content: null, last: null });\n  const elRef = useRef<HTMLDivElement>(null);\n  const size = useRef({ w: 0, h: 0 });\n  const onMeasureRef = useRef(onMeasure);\n  useEffect(() => {\n    onMeasureRef.current = onMeasure;\n  });\n  useImperativeHandle(\n    ref,\n    () => ({\n      set: (content) =>\n        setState((prev) => {\n          if ((prev.content?.key ?? null) === (content?.key ?? null)) return prev;\n          return { content, last: content ?? prev.last };\n        }),\n      get el() {\n        return elRef.current;\n      },\n      get size() {\n        return size.current;\n      },\n    }),\n    [],\n  );\n  useLayoutEffect(() => {\n    const el = elRef.current;\n    if (!el) return;\n    size.current = { w: el.offsetWidth, h: el.offsetHeight };\n    onMeasureRef.current?.();\n  }, [state.last]);\n  const shown = state.content ?? state.last;\n  return <ChartTooltip ref={elRef} title={shown?.title} rows={shown?.rows ?? []} visible={!!state.content} className={className} />;\n});\n\nexport interface AnnouncerHandle {\n  say: (message: string) => void;\n}\n\n// Polite live region with a 250ms trailing throttle, isolated from the chart's renders.\nexport const ChartAnnouncer = forwardRef<AnnouncerHandle, { ms?: number }>(function ChartAnnouncer({ ms = 250 }, ref) {\n  const [message, setMessage] = useState(\"\");\n  const at = useRef(0);\n  const timer = useRef<ReturnType<typeof setTimeout> | null>(null);\n  useEffect(\n    () => () => {\n      if (timer.current) clearTimeout(timer.current);\n    },\n    [],\n  );\n  useImperativeHandle(\n    ref,\n    () => ({\n      say: (text: string) => {\n        const now = performance.now();\n        if (timer.current) clearTimeout(timer.current);\n        if (now - at.current >= ms) {\n          at.current = now;\n          setMessage(text);\n        } else {\n          timer.current = setTimeout(() => {\n            at.current = performance.now();\n            setMessage(text);\n          }, ms);\n        }\n      },\n    }),\n    [ms],\n  );\n  return <LiveRegion message={message} />;\n});\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/charts/_kit/chrome.tsx"
    },
    {
      "path": "components/bjork-ui/_core/tone.ts",
      "content": "\"use client\";\n\nimport { useSyncExternalStore } from \"react\";\nimport { useTheme } from \"next-themes\";\nimport type { BjorkTone } from \"./palette\";\n\nconst subscribeNoop = () => () => {};\nconst getMounted = () => true;\nconst getServerMounted = () => false;\n\n/**\n * Resolves the tone for a component. An explicit `tone` always wins.\n * Otherwise it follows next-themes' resolved theme, but only after mount,\n * so the server render and first client render agree on dark.\n */\nexport function useBjorkTone(tone?: BjorkTone): BjorkTone {\n  const { resolvedTheme } = useTheme();\n  const mounted = useSyncExternalStore(subscribeNoop, getMounted, getServerMounted);\n  if (tone) return tone;\n  if (!mounted) return \"dark\";\n  return resolvedTheme === \"light\" ? \"light\" : \"dark\";\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/tone.ts"
    },
    {
      "path": "components/bjork-ui/_core/a11y.tsx",
      "content": "import type { ReactNode } from \"react\";\n\n// Text for assistive tech only.\nexport function VisuallyHidden({ children }: { children: ReactNode }) {\n  return <span className=\"sr-only\">{children}</span>;\n}\n\n// Announces `message` when it changes. Same text re-rendered does not re-announce.\nexport function LiveRegion({\n  message,\n  politeness = \"polite\",\n}: {\n  message: string;\n  politeness?: \"polite\" | \"assertive\";\n}) {\n  return (\n    <span role=\"status\" aria-live={politeness} aria-atomic=\"true\" className=\"sr-only\">\n      {message}\n    </span>\n  );\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/a11y.tsx"
    },
    {
      "path": "components/bjork-ui/_core/surface.ts",
      "content": "import type { CSSProperties } from \"react\";\nimport type { BjorkTone } from \"./palette\";\n\n// The library surface (CANON.md §1). Values mirror app/globals.css :root and .dark. Change both together.\nexport const BJORK_SURFACE = {\n  light: {\n    surface: \"#fffcf6\", surfaceMuted: \"rgba(250, 246, 237, 0.94)\", surfaceHover: \"#f5efe3\", surfaceActive: \"#efe7d8\",\n    panel: \"#f8f2e7\", menu: \"rgba(255, 252, 246, 0.98)\", field: \"rgba(255, 252, 246, 0.96)\",\n    fieldMuted: \"rgba(248, 242, 231, 0.82)\", fieldInset: \"rgba(239, 231, 216, 0.72)\",\n    border: \"#eee6db\", borderMuted: \"#f5ede2\", borderStrong: \"#e1d7c8\",\n    shadowSurface: \"inset 0 7px 14px rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.92), inset 1px 0 0 rgba(88, 72, 49, 0.026), inset -1px 0 0 rgba(255, 255, 255, 0.68), 0 14px 22px -9px rgba(66, 52, 33, 0.11)\",\n    shadowSoft: \"inset 0 1px 0 rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.86)\",\n    shadowPanel: \"inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.64), 0 18px 38px -30px rgba(66, 52, 33, 0.2)\",\n    shadowMenu: \"inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 0 12px 24px rgba(88, 72, 49, 0.022), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.62), 0 22px 44px -26px rgba(66, 52, 33, 0.22)\",\n    shadowInset: \"inset 0 1px 10px rgba(88, 72, 49, 0.12), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.72)\",\n  },\n  dark: {\n    surface: \"#121212\", surfaceMuted: \"rgba(22, 22, 22, 0.92)\", surfaceHover: \"#161616\", surfaceActive: \"#202020\",\n    panel: \"#0d0d0d\", menu: \"rgba(18, 18, 18, 0.98)\", field: \"rgba(18, 18, 18, 0.95)\",\n    fieldMuted: \"rgba(18, 18, 18, 0.55)\", fieldInset: \"rgba(9, 9, 9, 0.75)\",\n    border: \"#232323\", borderMuted: \"#1c1c1c\", borderStrong: \"#343434\",\n    shadowSurface: \"inset 0 7px 14px rgba(255, 255, 255, 0.03), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.06), 0 14px 20px -6px rgba(0, 0, 0, 0.45)\",\n    shadowSoft: \"inset 0 1px 0 rgba(255, 255, 255, 0.045)\",\n    shadowPanel: \"inset 0 1px 0 rgba(255, 255, 255, 0.035), 0 18px 36px -28px rgba(0, 0, 0, 0.9)\",\n    shadowMenu: \"inset 0 1px 0 rgba(255, 255, 255, 0.055), inset 0 12px 24px rgba(255, 255, 255, 0.018), inset 0 -18px 26px rgba(0, 0, 0, 0.24), 0 22px 42px -22px rgba(0, 0, 0, 0.9)\",\n    shadowInset: \"inset 0 1px 10px rgba(0, 0, 0, 0.45)\",\n  },\n} as const;\n\n/** Writes the surface tokens for a pinned tone as --bjork-* custom properties. Spread first; kit-specific keys may override. */\nexport function surfaceVars(tone: BjorkTone): CSSProperties {\n  const s = BJORK_SURFACE[tone];\n  return {\n    \"--bjork-surface\": s.surface, \"--bjork-surface-muted\": s.surfaceMuted, \"--bjork-surface-hover\": s.surfaceHover,\n    \"--bjork-surface-active\": s.surfaceActive, \"--bjork-panel\": s.panel, \"--bjork-menu\": s.menu, \"--bjork-field\": s.field,\n    \"--bjork-field-muted\": s.fieldMuted, \"--bjork-field-inset\": s.fieldInset, \"--bjork-border\": s.border,\n    \"--bjork-border-muted\": s.borderMuted, \"--bjork-border-strong\": s.borderStrong,\n    \"--bjork-shadow-surface\": s.shadowSurface, \"--bjork-shadow-soft\": s.shadowSoft, \"--bjork-shadow-panel\": s.shadowPanel,\n    \"--bjork-shadow-menu\": s.shadowMenu, \"--bjork-shadow-inset\": s.shadowInset,\n  } as CSSProperties;\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/_core/surface.ts"
    },
    {
      "path": "components/bjork-ui/charts/_kit/scale.ts",
      "content": "// Shared chart math for the Charts collection: nice ticks, scales, damping, colour and number formatting.\n// Pure functions only. Every chart imports what it needs by path.\n\nexport function clamp(v: number, lo: number, hi: number): number {\n  return v < lo ? lo : v > hi ? hi : v;\n}\n\nexport function lerp(a: number, b: number, t: number): number {\n  return a + (b - a) * t;\n}\n\n// Maps v from [d0, d1] to [r0, r1]. Degenerate domains map to the range midpoint.\nexport function scaleLinear(d0: number, d1: number, r0: number, r1: number): (v: number) => number {\n  const span = d1 - d0;\n  if (!(Math.abs(span) > 1e-12)) return () => (r0 + r1) / 2;\n  const k = (r1 - r0) / span;\n  return (v: number) => r0 + (v - d0) * k;\n}\n\n// Frame-rate independent approach: moves `cur` toward `target` with time constant `tau` seconds.\nexport function damp(cur: number, target: number, tau: number, dt: number): number {\n  if (tau <= 0) return target;\n  return target + (cur - target) * Math.exp(-dt / tau);\n}\n\n// A \"nice\" step (1, 2, 2.5 or 5 x 10^k) that splits `span` into roughly `count` intervals.\nexport function niceStep(span: number, count = 5): number {\n  if (!(span > 0) || !Number.isFinite(span)) return 1;\n  const raw = span / Math.max(1, count);\n  const mag = 10 ** Math.floor(Math.log10(raw));\n  const r = raw / mag;\n  const m = r <= 1 ? 1 : r <= 2 ? 2 : r <= 2.5 ? 2.5 : r <= 5 ? 5 : 10;\n  return m * mag;\n}\n\n// Tick values at a nice step, inclusive of the domain ends when they land on the step.\nexport function niceTicks(lo: number, hi: number, count = 5): number[] {\n  if (!(hi > lo)) return [lo];\n  const step = niceStep(hi - lo, count);\n  const first = Math.ceil(lo / step - 1e-9);\n  const last = Math.floor(hi / step + 1e-9);\n  const out: number[] = [];\n  for (let n = first; n <= last; n++) out.push(Number((n * step).toFixed(12)));\n  return out;\n}\n\n// Expands [lo, hi] outward to the nearest nice step, so the outer gridlines sit on round values.\nexport function niceDomain(lo: number, hi: number, count = 5): [number, number] {\n  if (!(hi > lo)) {\n    const pad = Math.max(Math.abs(hi) * 0.1, 1);\n    return [lo - pad, hi + pad];\n  }\n  const step = niceStep(hi - lo, count);\n  return [Math.floor(lo / step + 1e-9) * step, Math.ceil(hi / step - 1e-9) * step];\n}\n\n// Half-pixel snap for crisp 1px hairlines.\nexport function crisp(v: number): number {\n  return Math.round(v) + 0.5;\n}\n\n// --- Colour -------------------------------------------------------------------------------------\n\nconst rgbCache = new Map<string, [number, number, number, number]>();\n\n// Parses #rgb, #rrggbb and rgba()/rgb() strings. Returns [r, g, b, a].\nexport function parseColor(c: string): [number, number, number, number] {\n  const hit = rgbCache.get(c);\n  if (hit) return hit;\n  let out: [number, number, number, number] = [0, 0, 0, 1];\n  const s = c.trim();\n  if (s.startsWith(\"#\")) {\n    let h = s.slice(1);\n    if (h.length === 3) h = h.split(\"\").map((ch) => ch + ch).join(\"\");\n    const n = parseInt(h.slice(0, 6), 16);\n    out = [(n >> 16) & 255, (n >> 8) & 255, n & 255, 1];\n  } else {\n    const m = s.match(/rgba?\\(([^)]+)\\)/);\n    if (m) {\n      const p = m[1].split(\",\").map((x) => parseFloat(x));\n      out = [p[0] ?? 0, p[1] ?? 0, p[2] ?? 0, p[3] ?? 1];\n    }\n  }\n  rgbCache.set(c, out);\n  return out;\n}\n\n// The colour at alpha `a`, multiplied with any alpha the colour already has.\nexport function withAlpha(c: string, a: number): string {\n  const [r, g, b, a0] = parseColor(c);\n  return `rgba(${r},${g},${b},${+(a0 * a).toFixed(4)})`;\n}\n\n// Mixes two opaque colours in sRGB. t = 0 gives `a`.\nexport function mixColor(a: string, b: string, t: number): string {\n  const ca = parseColor(a);\n  const cb = parseColor(b);\n  const r = Math.round(lerp(ca[0], cb[0], t));\n  const g = Math.round(lerp(ca[1], cb[1], t));\n  const bl = Math.round(lerp(ca[2], cb[2], t));\n  return `rgb(${r},${g},${bl})`;\n}\n\n// --- Numbers ------------------------------------------------------------------------------------\n\nconst fmtCache = new Map<string, Intl.NumberFormat>();\nfunction nf(opts: Intl.NumberFormatOptions): Intl.NumberFormat {\n  const key = JSON.stringify(opts);\n  let f = fmtCache.get(key);\n  if (!f) {\n    f = new Intl.NumberFormat(\"en-US\", opts);\n    fmtCache.set(key, f);\n  }\n  return f;\n}\n\nexport function formatNumber(v: number, digits = 1): string {\n  if (!Number.isFinite(v)) return \"–\";\n  return nf({ maximumFractionDigits: digits, minimumFractionDigits: 0 }).format(v);\n}\n\nexport function formatFixed(v: number, digits = 2): string {\n  if (!Number.isFinite(v)) return \"–\";\n  return nf({ maximumFractionDigits: digits, minimumFractionDigits: digits }).format(v);\n}\n\n// 1,284 / 12.9K / 4.2M. Uses a true minus sign.\nexport function formatCompact(v: number, digits = 1): string {\n  if (!Number.isFinite(v)) return \"–\";\n  const s = nf({ notation: \"compact\", maximumFractionDigits: digits }).format(Math.abs(v));\n  return v < 0 ? `−${s}` : s;\n}\n\nexport function formatPercent(v: number, digits = 0): string {\n  if (!Number.isFinite(v)) return \"–\";\n  const s = nf({ maximumFractionDigits: digits, minimumFractionDigits: digits }).format(Math.abs(v * 100));\n  return `${v < 0 ? \"−\" : \"\"}${s}%`;\n}\n\n// +1.2 / −0.8 / 0. Signed numbers use a true minus and an explicit plus.\nexport function formatSigned(v: number, format: (n: number) => string = (n) => formatNumber(n)): string {\n  if (!Number.isFinite(v)) return \"–\";\n  const body = format(Math.abs(v));\n  // A value that rounds to zero carries no sign.\n  if (Math.abs(v) < 1e-12 || !/[1-9]/.test(body)) return body;\n  return `${v > 0 ? \"+\" : \"−\"}${body}`;\n}\n\n// Gaussian kernel density at x for a sorted sample, bandwidth h.\nexport function kde(sample: number[], x: number, h: number): number {\n  const n = sample.length;\n  if (!n || !(h > 0)) return 0;\n  let s = 0;\n  const inv = 1 / h;\n  for (let i = 0; i < n; i++) {\n    const u = (x - sample[i]) * inv;\n    if (u > 4 || u < -4) continue;\n    s += Math.exp(-0.5 * u * u);\n  }\n  return s / (n * h * Math.sqrt(2 * Math.PI));\n}\n\n// Silverman's rule of thumb bandwidth.\nexport function silverman(sample: number[]): number {\n  const n = sample.length;\n  if (n < 2) return 1;\n  const mean = sample.reduce((a, b) => a + b, 0) / n;\n  const sd = Math.sqrt(sample.reduce((a, b) => a + (b - mean) ** 2, 0) / (n - 1));\n  const sorted = [...sample].sort((a, b) => a - b);\n  const iqr = quantile(sorted, 0.75) - quantile(sorted, 0.25);\n  const spread = Math.min(sd, iqr / 1.34) || sd || 1;\n  return 0.9 * spread * n ** -0.2;\n}\n\n// Linear-interpolated quantile of a sorted array.\nexport function quantile(sorted: number[], q: number): number {\n  const n = sorted.length;\n  if (!n) return NaN;\n  if (n === 1) return sorted[0];\n  const pos = clamp(q, 0, 1) * (n - 1);\n  const lo = Math.floor(pos);\n  const hi = Math.min(n - 1, lo + 1);\n  return sorted[lo] + (sorted[hi] - sorted[lo]) * (pos - lo);\n}\n\n// Standard normal sample from a uniform source (Box-Muller).\nexport function gaussian(rnd: () => number): number {\n  const u = Math.max(rnd(), 1e-9);\n  const v = rnd();\n  return Math.sqrt(-2 * Math.log(u)) * Math.cos(2 * Math.PI * v);\n}\n\n// --- Time ---------------------------------------------------------------------------------------\n\nconst HOUR = 3600000;\nconst DAY = 86400000;\nconst timeFmt = {\n  hour: new Intl.DateTimeFormat(\"en-US\", { hour: \"numeric\", timeZone: \"UTC\" }),\n  day: new Intl.DateTimeFormat(\"en-US\", { month: \"short\", day: \"numeric\", timeZone: \"UTC\" }),\n  month: new Intl.DateTimeFormat(\"en-US\", { month: \"short\", timeZone: \"UTC\" }),\n  monthYear: new Intl.DateTimeFormat(\"en-US\", { month: \"short\", year: \"2-digit\", timeZone: \"UTC\" }),\n  year: new Intl.DateTimeFormat(\"en-US\", { year: \"numeric\", timeZone: \"UTC\" }),\n};\n\nexport interface TimeTick {\n  t: number;\n  label: string;\n}\n\n// Calendar-aligned ticks (UTC) for [t0, t1] drawn across `px` pixels, at least `minPx` apart.\nexport function timeTicks(t0: number, t1: number, px: number, minPx = 64): TimeTick[] {\n  const span = t1 - t0;\n  if (!(span > 0) || !(px > 0)) return [];\n  const maxTicks = Math.max(1, Math.floor(px / minPx));\n  const perTick = span / maxTicks;\n  const out: TimeTick[] = [];\n  const hourSteps = [1, 2, 3, 6, 12];\n  for (const k of hourSteps) {\n    if (k * HOUR >= perTick) {\n      const step = k * HOUR;\n      for (let t = Math.ceil(t0 / step) * step; t <= t1; t += step) {\n        const d = new Date(t);\n        out.push({ t, label: d.getUTCHours() === 0 ? timeFmt.day.format(t) : timeFmt.hour.format(t) });\n      }\n      return out;\n    }\n  }\n  const daySteps = [1, 2, 3, 7, 14];\n  for (const k of daySteps) {\n    if (k * DAY >= perTick) {\n      const step = k * DAY;\n      // Weekly steps land on Mondays.\n      const offset = k === 7 || k === 14 ? 4 * DAY : 0;\n      for (let t = Math.ceil((t0 - offset) / step) * step + offset; t <= t1; t += step) out.push({ t, label: timeFmt.day.format(t) });\n      return out;\n    }\n  }\n  const monthSteps = [1, 2, 3, 6, 12, 24, 60];\n  for (const k of monthSteps) {\n    if (k * 30.44 * DAY >= perTick) {\n      const d0 = new Date(t0);\n      let y = d0.getUTCFullYear();\n      let m = d0.getUTCMonth();\n      // First boundary at or after t0 that is a multiple of k months.\n      m = Math.ceil(m / k) * k;\n      for (;;) {\n        y += Math.floor(m / 12);\n        m %= 12;\n        const t = Date.UTC(y, m, 1);\n        if (t > t1) break;\n        if (t >= t0) {\n          const label = k >= 12 ? timeFmt.year.format(t) : m === 0 ? timeFmt.monthYear.format(t) : timeFmt.month.format(t);\n          out.push({ t, label });\n        }\n        m += k;\n      }\n      return out;\n    }\n  }\n  return out;\n}\n\nexport function formatDateUTC(t: number, style: \"day\" | \"full\" = \"day\"): string {\n  if (style === \"full\") return new Date(t).toLocaleDateString(\"en-US\", { weekday: \"short\", month: \"short\", day: \"numeric\", year: \"numeric\", timeZone: \"UTC\" });\n  return timeFmt.day.format(t);\n}\n",
      "type": "registry:component",
      "target": "@components/bjork-ui/charts/_kit/scale.ts"
    }
  ],
  "cssVars": {
    "light": {
      "bjork-bg": "#f7f3ea",
      "bjork-surface": "#fffcf6",
      "bjork-surface-muted": "rgba(250, 246, 237, 0.94)",
      "bjork-surface-hover": "#f5efe3",
      "bjork-surface-active": "#efe7d8",
      "bjork-panel": "#f8f2e7",
      "bjork-menu": "rgba(255, 252, 246, 0.98)",
      "bjork-field": "rgba(255, 252, 246, 0.96)",
      "bjork-field-muted": "rgba(248, 242, 231, 0.82)",
      "bjork-field-inset": "rgba(239, 231, 216, 0.72)",
      "bjork-error-bg": "#fff0e8",
      "bjork-text": "#171717",
      "bjork-text-strong": "rgba(23, 23, 23, 0.9)",
      "bjork-text-medium": "rgba(23, 23, 23, 0.78)",
      "bjork-text-muted": "rgba(23, 23, 23, 0.68)",
      "bjork-text-soft": "rgba(23, 23, 23, 0.62)",
      "bjork-text-faint": "rgba(23, 23, 23, 0.22)",
      "bjork-inverted-text": "#fff8f0",
      "bjork-border": "#eee6db",
      "bjork-border-muted": "#f5ede2",
      "bjork-border-strong": "#e1d7c8",
      "bjork-thumb": "#a49b8e",
      "bjork-track": "#ded6ca",
      "bjork-accent": "#ec7d43",
      "bjork-accent-hover": "#f0935f",
      "bjork-accent-soft": "rgba(236, 125, 67, 0.1)",
      "bjork-accent-muted": "rgba(236, 125, 67, 0.2)",
      "bjork-accent-badge": "rgba(236, 125, 67, 0.16)",
      "bjork-accent-badge-foreground": "#8d421d",
      "bjork-accent-foreground": "#3f2112",
      "bjork-accent-fill": "#ec7d43",
      "bjork-accent-fill-hover": "#f0935f",
      "bjork-shadow-surface": "inset 0 7px 14px rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.92), inset 1px 0 0 rgba(88, 72, 49, 0.026), inset -1px 0 0 rgba(255, 255, 255, 0.68), 0 14px 22px -9px rgba(66, 52, 33, 0.11)",
      "bjork-shadow-soft": "inset 0 1px 0 rgba(88, 72, 49, 0.045), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.86)",
      "bjork-shadow-panel": "inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.64), 0 18px 38px -30px rgba(66, 52, 33, 0.2)",
      "bjork-shadow-menu": "inset 0 1px 0 rgba(88, 72, 49, 0.04), inset 0 12px 24px rgba(88, 72, 49, 0.022), inset 1px 0 0 rgba(88, 72, 49, 0.024), inset -1px 0 0 rgba(255, 255, 255, 0.62), 0 22px 44px -26px rgba(66, 52, 33, 0.22)",
      "bjork-shadow-inset": "inset 0 1px 10px rgba(88, 72, 49, 0.12), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.72)",
      "bjork-ring-offset": "#f7f3ea"
    },
    "dark": {
      "bjork-bg": "#111111",
      "bjork-surface": "#121212",
      "bjork-surface-muted": "rgba(22, 22, 22, 0.92)",
      "bjork-surface-hover": "#161616",
      "bjork-surface-active": "#202020",
      "bjork-panel": "#0d0d0d",
      "bjork-menu": "rgba(18, 18, 18, 0.98)",
      "bjork-field": "rgba(18, 18, 18, 0.95)",
      "bjork-field-muted": "rgba(18, 18, 18, 0.55)",
      "bjork-field-inset": "rgba(9, 9, 9, 0.75)",
      "bjork-error-bg": "#130d0a",
      "bjork-text": "#ededed",
      "bjork-text-strong": "rgba(237, 237, 237, 0.9)",
      "bjork-text-medium": "rgba(237, 237, 237, 0.72)",
      "bjork-text-muted": "rgba(237, 237, 237, 0.6)",
      "bjork-text-soft": "rgba(237, 237, 237, 0.5)",
      "bjork-text-faint": "rgba(237, 237, 237, 0.22)",
      "bjork-inverted-text": "#080808",
      "bjork-border": "#232323",
      "bjork-border-muted": "#1c1c1c",
      "bjork-border-strong": "#343434",
      "bjork-thumb": "#626262",
      "bjork-track": "#090909",
      "bjork-accent": "#ec5c13",
      "bjork-accent-hover": "#f07832",
      "bjork-accent-soft": "rgba(236, 92, 19, 0.12)",
      "bjork-accent-muted": "rgba(236, 92, 19, 0.24)",
      "bjork-accent-badge": "#b84a12",
      "bjork-accent-badge-foreground": "#fff2ea",
      "bjork-accent-foreground": "#fff2ea",
      "bjork-accent-fill": "#b84a12",
      "bjork-accent-fill-hover": "#a84a14",
      "bjork-shadow-surface": "inset 0 7px 14px rgba(255, 255, 255, 0.03), inset 0 0.5px 0.5px rgba(255, 255, 255, 0.06), 0 14px 20px -6px rgba(0, 0, 0, 0.45)",
      "bjork-shadow-soft": "inset 0 1px 0 rgba(255, 255, 255, 0.045)",
      "bjork-shadow-panel": "inset 0 1px 0 rgba(255, 255, 255, 0.035), 0 18px 36px -28px rgba(0, 0, 0, 0.9)",
      "bjork-shadow-menu": "inset 0 1px 0 rgba(255, 255, 255, 0.055), inset 0 12px 24px rgba(255, 255, 255, 0.018), inset 0 -18px 26px rgba(0, 0, 0, 0.24), 0 22px 42px -22px rgba(0, 0, 0, 0.9)",
      "bjork-shadow-inset": "inset 0 1px 10px rgba(0, 0, 0, 0.45)",
      "bjork-ring-offset": "#080808"
    }
  },
  "css": {
    ".bjork-range": {
      "box-shadow": "inset 0 1px 1px rgba(255, 255, 255, 0.04), 0 0 14px rgba(189, 69, 20, 0.06)"
    },
    ".bjork-range::-webkit-slider-thumb": {
      "appearance": "none",
      "width": "16px",
      "height": "8px",
      "border": "0",
      "border-radius": "999px",
      "background": "var(--bjork-thumb)",
      "box-shadow": "inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.42)"
    },
    ".bjork-range::-moz-range-thumb": {
      "width": "16px",
      "height": "8px",
      "border": "0",
      "border-radius": "999px",
      "background": "var(--bjork-thumb)",
      "box-shadow": "inset 0 1px 0 rgba(255, 255, 255, 0.18), 0 0 0 1px rgba(0, 0, 0, 0.42)"
    },
    ".bjork-layered-button-accent, .bjork-layered-button-raised": {
      "position": "relative",
      "isolation": "isolate",
      "appearance": "none",
      "overflow": "hidden",
      "border": "0",
      "border-radius": "13px",
      "box-shadow": "inset 0 1px 0 #ffffff38, 0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a",
      "transition": "filter 150ms ease-out, box-shadow 150ms ease-out"
    },
    ".bjork-layered-button-accent::after, .bjork-layered-button-raised::after": {
      "position": "absolute",
      "inset": "0",
      "pointer-events": "none",
      "content": "\"\"",
      "border": "1.5px solid transparent",
      "border-radius": "inherit",
      "background": "linear-gradient(#ffffffb8, #0000003d 41% 75%, #ffffff47) border-box",
      "mix-blend-mode": "overlay",
      "-webkit-mask-image": "linear-gradient(#000, #000), linear-gradient(#000, #000)",
      "mask-image": "linear-gradient(#000, #000), linear-gradient(#000, #000)",
      "-webkit-mask-clip": "padding-box, border-box",
      "mask-clip": "padding-box, border-box",
      "-webkit-mask-origin": "padding-box, border-box",
      "mask-origin": "padding-box, border-box",
      "-webkit-mask-composite": "xor",
      "mask-composite": "exclude"
    },
    ".bjork-layered-button-accent": {
      "color": "oklch(100% 0 0)",
      "text-shadow": "0 -1px #00000040",
      "background": "radial-gradient(ellipse at -20px top, rgba(255, 255, 255, 0.14), transparent), linear-gradient(180deg, #ec5c13 0%, #ec5c13 62%, color-mix(in oklab, #ec5c13 84%, black 16%) 100%)"
    },
    ".bjork-layered-button-raised": {
      "color": "oklch(100% 0 0)",
      "text-shadow": "0 -1px #00000026",
      "background": "radial-gradient(ellipse at -20px top, #ffffff38, #fff0), linear-gradient(180deg, oklch(0.1881 0.006 265), oklch(0.5493 0.0081 265))"
    },
    ".dark .bjork-layered-button-raised": {
      "color": "oklch(0.2574 0.0056 265)",
      "text-shadow": "0 -1px #00000026",
      "background": "radial-gradient(ellipse at -20px top, #ffffff38, #fff0), linear-gradient(180deg, color-mix(in oklab, oklch(0.9674 0.0013 265) 80%, oklch(0.2574 0.0056 265) 20%), color-mix(in oklab, oklch(0.669 0.0107 265) 80%, oklch(0.2574 0.0056 265) 20%))"
    },
    "@media (hover: hover)": {
      ".bjork-layered-button-accent:hover": {
        "filter": "brightness(1.08) saturate(1.04)"
      },
      ".bjork-layered-button-raised:hover": {
        "filter": "brightness(1.08) contrast(0.9)"
      }
    }
  },
  "meta": {
    "collection": "Charts",
    "registryUrl": "https://ui.isaiahbjork.com/depth-chart.json",
    "installCommand": "npx shadcn@latest add https://ui.isaiahbjork.com/depth-chart.json"
  },
  "type": "registry:component"
}