# Night ribbon (Notchset): prompt.md (v2.0.0)

- id: `night-ribbon` · version 2.0.0 · component · free
- category: Charts
- build: one set of files for every shadcn style
- install: `npx shadcn@latest add https://notchset.dev/r/night-ribbon.json`
- npm dependencies: none
- registry dependencies: utils, https://notchset.dev/r/notchset-foundation.json, @notchset/chart
- docs: https://notchset.dev/components/night-ribbon
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

Awake, REM, Light and Deep as lanes, each stretch a rounded capsule in the stage's tint joined to the next by a soft riser, so the night reads as one ribbon. The longest deep stretch glows with its pill; the axis says bedtime, a few hours and wake, and the table carries every stretch..

## Build it
- Stack: React 18.3 or 19, TypeScript, Tailwind CSS v4 utility classes on the foundation's roles, a components.json (imports use its aliases).
- Packages: none beyond React.
- Files: `components/ui/notchset/night-ribbon.tsx`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `notchset-foundation`, `chart`.
- Builds: one set of files, the same for every shadcn style.
- Exports to keep: `NightRibbon`, and every exported type.
- CSS: the install adds the notchset foundation (its roles, keyframes and motion switch, reading your shadcn tokens for colour) to your global stylesheet once. Nothing to import by hand.
- Re-running `add` (or `--overwrite`) re-applies those rules: put overrides in your own CSS, never in the installed rules.
- Colours: every part reads the foundation's roles (`--ns-canvas`, `--ns-ink`, `--ns-line`, `--ns-signal` …), which read your shadcn tokens (`--background`, `--foreground`, `--border`, `--destructive` …), plus the optional `--success` and `--warning`. Retheme on `:root` or any container; never add Tailwind colour classes inside the component.
- This item reads `--ns-canvas`, `--ns-font-mono`, `--ns-glow`, `--ns-ink`, `--ns-ink-3`, `--ns-line-soft`, `--ns-sleep-awake`, `--ns-sleep-deep`, `--ns-sleep-light`, `--ns-sleep-rem`, `--ns-text-meta`.
- Retune it (on any ancestor) with the foundation's roles and hooks: `--ns-bad`, `--ns-bad-ink`, `--ns-band`, `--ns-band-edge`, `--ns-band-grade`, `--ns-band-optimal`, `--ns-beat`, `--ns-bezel`, `--ns-canvas`, `--ns-cat-1`, `--ns-cat-2`, `--ns-cat-3`, `--ns-cat-4`, `--ns-cat-5`, `--ns-cat-6`, `--ns-check`, `--ns-chip`, `--ns-control`, `--ns-control-pad`, `--ns-control-sm`, `--ns-deep`, `--ns-deep-ink`, `--ns-deep-ink-2`, `--ns-deep-line`, `--ns-dialog`, `--ns-dialog-lg`, `--ns-dialog-sm`, `--ns-ease`, `--ns-ease-in`, `--ns-ease-panel`, `--ns-ease-pop`, `--ns-field`, `--ns-flood-arc`, `--ns-flood-aurora`, `--ns-flood-behind-1`, `--ns-flood-behind-2`, `--ns-flood-bloom`, `--ns-flood-deep`, `--ns-flood-dial-bloom`, `--ns-flood-glass`, `--ns-flood-grain`, `--ns-flood-image`, `--ns-flood-ink`, `--ns-flood-ink-low`, `--ns-flood-light`, `--ns-flood-mid`, `--ns-flood-pale`, `--ns-flood-pane`, `--ns-flood-pane-edge`, `--ns-flood-pill-ink`, `--ns-flood-ribbon`, `--ns-flood-ribbon-core`, `--ns-flood-shadow`, `--ns-flood-sheen`, `--ns-flood-wash`, `--ns-font-body`, `--ns-font-display`, `--ns-font-mono`, `--ns-font-script`, `--ns-glass`, `--ns-glass-blur`, `--ns-glass-shadow`, `--ns-glow`, `--ns-grain`, `--ns-gutter`, `--ns-header`, `--ns-heat`, `--ns-hover`, `--ns-ink`, `--ns-ink-2`, `--ns-ink-3`, `--ns-ink-4`, `--ns-leading`, `--ns-lift`, `--ns-light-1`, `--ns-light-2`, `--ns-light-3`, `--ns-light-spread`, `--ns-light-strength`, `--ns-line`, `--ns-line-soft`, `--ns-lit-edge`, `--ns-menu-dy`, `--ns-menu-row`, `--ns-mesh`, `--ns-mesh-frost`, `--ns-ok`, `--ns-ok-ink`, `--ns-orb-body`, `--ns-orb-cool`, `--ns-orb-core`, `--ns-orb-dawn`, `--ns-orb-deep`, `--ns-orb-edge`, `--ns-orb-grain`, `--ns-orb-ground`, `--ns-orb-halo`, `--ns-orb-inner`, `--ns-orb-key`, `--ns-orb-lift`, `--ns-orb-limb`, `--ns-orb-limb-from`, `--ns-orb-rim`, `--ns-orb-skin-hi`, `--ns-orb-skin-lo`, `--ns-orb-skin-mid`, `--ns-orb-warm`, `--ns-panel`, `--ns-panel-w`, `--ns-prism-edge`, `--ns-prism-glint`, `--ns-prism-sheen`, `--ns-prism-tint`, `--ns-pulse`, `--ns-radius`, `--ns-radius-card`, `--ns-radius-full`, `--ns-radius-lg`, `--ns-radius-sm`, `--ns-radius-xl`, `--ns-raised`, `--ns-range`, `--ns-row`, `--ns-row-compact`, `--ns-segment`, `--ns-selected`, `--ns-series`, `--ns-series-core`, `--ns-series-lilac`, `--ns-series-tint`, `--ns-shadow-dialog`, `--ns-shadow-float`, `--ns-shadow-panel`, `--ns-sheet`, `--ns-sheet-bottom`, `--ns-side`, `--ns-signal`, `--ns-sleep-awake`, `--ns-sleep-deep`, `--ns-sleep-light`, `--ns-sleep-rem`, `--ns-space-1`, `--ns-space-2`, `--ns-space-3`, `--ns-space-4`, `--ns-space-5`, `--ns-space-6`, `--ns-space-8`, `--ns-space-section`, `--ns-stack-on`, `--ns-standing-critical`, `--ns-standing-in`, `--ns-standing-out`, `--ns-state-doing`, `--ns-state-done`, `--ns-state-review`, `--ns-state-todo`, `--ns-switch-h`, `--ns-switch-w`, `--ns-text-body`, `--ns-text-control`, `--ns-text-display`, `--ns-text-figure`, `--ns-text-headline`, `--ns-text-hero`, `--ns-text-lede`, `--ns-text-meta`, `--ns-text-page`, `--ns-text-record`, `--ns-text-small`, `--ns-text-strong`, `--ns-text-sub`, `--ns-text-title`, `--ns-tile-shadow`, `--ns-time-born`, `--ns-time-color`, `--ns-time-dialog`, `--ns-time-menu`, `--ns-time-page`, `--ns-time-panel`, `--ns-time-toast`, `--ns-tint`, `--ns-tint-ink`, `--ns-toast-bottom`, `--ns-toast-left`, `--ns-touch`, `--ns-tracking-display`, `--ns-tracking-headline`, `--ns-warn`, `--ns-warn-ink`, `--ns-wash-clay`, `--ns-wash-dusk`, `--ns-wash-graphite`, `--ns-wash-ink`, `--ns-wash-sage`, `--ns-wash-sand`, `--ns-weight-light`, `--ns-weight-medium`, `--ns-weight-regular`, `--ns-weight-strong`, `--ns-well`.
- Never add Tailwind colour classes inside the component.

```tsx
import { NightRibbon } from "@/components/ui/notchset/night-ribbon";
```

## Parts
- A single export that takes props.

## Match the original
- Read `components/ui/notchset/night-ribbon.tsx` as the reference implementation before changing or recreating anything, and match it: sizes, colours per theme, motion timings, copy and behaviour.
- If you deviate (a prop you can't honour, a style you changed, a dependency you swapped), say so in your reply, part by part.
- Keep the accessibility contract, the keyboard map and the motion levels listed below.

## Use it when

### Not when

## Built from
- chart (`chart`), installed with it: reuse it, don't rebuild it

## Mistakes
- Recreating the component instead of installing it

## Usage

```tsx
"use client";
import { NightRibbon } from "@/components/ui/notchset/night-ribbon";

const PLAN: ["awake" | "rem" | "light" | "deep", number][] = [["awake", 14], ["light", 22], ["deep", 38], ["light", 18], ["rem", 14], ["light", 26], ["deep", 55], ["light", 20], ["rem", 22], ["awake", 6], ["light", 34], ["deep", 24], ["rem", 28], ["light", 30], ["awake", 9], ["light", 28], ["rem", 36], ["light", 22], ["awake", 4]];
let t = 0;
const stretches = PLAN.map(([stage, m]) => ({ stage, from: t, to: (t += m) }));

export default function NightRibbonDemo() {
  return (
    <div className="w-full max-w-[900px]">
      <NightRibbon bed="23:10" stretches={stretches} label="Last night's stages" />
    </div>
  );
}
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `bed` | `string` |  | Required. |
| `stretches` | `NightRibbonStretch[]` |  | Required. |
| `label` | `string` |  | Required. |
| `height` | `number` | `200` |  |

Full docs: https://notchset.dev/components/night-ribbon

## Customising
- Colours: every part reads the foundation's roles (`--ns-canvas`, `--ns-ink`, `--ns-line`, `--ns-signal` …), which read your shadcn tokens (`--background`, `--foreground`, `--border`, `--destructive` …), plus the optional `--success` and `--warning`. Retheme on `:root` or any container; never add Tailwind colour classes inside the component.
- Dark mode follows the `.dark` class or `data-theme="dark"` on an ancestor (the shadcn and next-themes conventions).
- Update later: Commit or stash local changes first (or copy the files), so the update can be undone. Read https://notchset.dev/r/changelog.json for the new versions: a major version, an entry marked breaking or a merge says what to change. Then re-run the install with `--overwrite`, on a branch. It replaces the component's files, the shared helper files they import, and the item's CSS rules in the global stylesheet, so review the whole diff (components, shared files, CSS), re-apply your own edits, and run the app's typecheck, tests and build.

## Accessibility contract (preserve when editing)

## Install

```bash
npx shadcn@latest add https://notchset.dev/r/night-ribbon.json
```

Or add the `@notchset` registry to components.json and run `npx shadcn@latest add @notchset/night-ribbon`. Every components.json style gets the same files.

## Continue the workflow

- [Day timeline](https://notchset.dev/components/day-timeline)
- [Ghost trend](https://notchset.dev/components/ghost-trend)
- [Glucose day](https://notchset.dev/components/glucose-day)

## Source

### components/ui/notchset/night-ribbon.tsx

```tsx
// Notchset night-ribbon 2.0.0 · https://notchset.dev/changelog
"use client";
import * as React from "react";
import { cn } from "@/lib/utils";
import { ChartTable, ChartTableToggle, useChartWidth } from "@/components/ui/notchset/chart";

/*
 * Night ribbon: a night's stages stacked by depth (Awake on top, then REM, Light and Deep) as rounded capsules in the
 * stages' own tints, joined by soft risers, so the night reads as one ribbon. The longest deep stretch glows and
 * carries its pill ("Deep · 55 min"). The axis says only bedtime, two or three hours and wake; the table carries
 * every stretch.
 *
 *   <NightRibbon bed="23:10" stretches={[{ stage: "awake", from: 0, to: 14 }, …]} label="Last night's stages" />
 *
 * Minutes count from bedtime.
 */
type NightRibbonStage = "awake" | "rem" | "light" | "deep";
type NightRibbonStretch = { stage: NightRibbonStage; from: number; to: number };
type NightRibbonProps = {
  bed: string;
  stretches: NightRibbonStretch[];
  label: string;
  height?: number | undefined;
  className?: string | undefined;
};

const LANES: { stage: NightRibbonStage; name: string; color: string }[] = [
  { stage: "awake", name: "Awake", color: "var(--ns-sleep-awake)" },
  { stage: "rem", name: "REM", color: "var(--ns-sleep-rem)" },
  { stage: "light", name: "Light", color: "var(--ns-sleep-light)" },
  { stage: "deep", name: "Deep", color: "var(--ns-sleep-deep)" },
];
const lane = (s: NightRibbonStage) => LANES.findIndex((l) => l.stage === s);

function clock(bed: string, m: number) {
  const [h, mm] = bed.split(":").map(Number);
  const t = (((h! * 60 + mm! + m) % 1440) + 1440) % 1440;
  return `${String(Math.floor(t / 60)).padStart(2, "0")}:${String(t % 60).padStart(2, "0")}`;
}
const dur = (m: number) => (m < 60 ? `${m} min` : `${Math.floor(m / 60)} h ${String(m % 60).padStart(2, "0")}`);

function NightRibbon({ bed, stretches, label, height = 200, className }: NightRibbonProps) {
  const id = React.useId().replace(/:/g, "");
  const [box, W] = useChartWidth<HTMLDivElement>(720);
  const [table, setTable] = React.useState(false);
  const end = stretches[stretches.length - 1]?.to ?? 1;
  const wide = W > 520;
  const GX = wide ? 56 : 0;
  const AX = 22;
  const lh = (height - AX) / 4;
  const X = (m: number) => GX + (m / end) * (W - GX);
  const Y = (s: NightRibbonStage) => lane(s) * lh;
  /* a capsule no taller than the night is wide allows: a phone gets slim bars, never upright blobs */
  const bar = Math.min(lh - 12, Math.max(14, W / 24));
  const by = (st: NightRibbonStage) => Y(st) + (lh - bar) / 2;
  const deep = stretches.filter((x) => x.stage === "deep").reduce<NightRibbonStretch | undefined>((a, x) => (!a || x.to - x.from > a.to - a.from ? x : a), undefined);
  /* the axis: bedtime, the whole hours between (two or three of them) and wake */
  const [bh, bm] = bed.split(":").map(Number);
  const every = wide ? 2 : 3;
  const ticks: number[] = [];
  for (let m = (60 - bm!) % 60; m < end - 50; m += 60) if (m > 50 && ((bh! + Math.round((bm! + m) / 60)) % 24) % every === 1) ticks.push(m);
  const summary = `${label}: in bed ${bed}, up ${clock(bed, end)}${deep ? `; the longest deep stretch ${dur(deep.to - deep.from)} from ${clock(bed, deep.from)}` : ""}`;
  return (
    <div data-slot="night-ribbon" className={cn("flex min-w-0 flex-col gap-2", className)}>
      <div ref={box} className="relative min-w-0">
        <svg role="img" aria-label={summary} width={W} height={height} className="block overflow-visible">
          <defs>
            <filter id={`${id}g`} x="-30%" y="-80%" width="160%" height="260%">
              <feGaussianBlur stdDeviation="7" />
            </filter>
            <linearGradient id={`${id}v`} x1="0" x2="0" y1="0" y2="1">
              <stop offset="0" stopColor="var(--ns-sleep-rem)" stopOpacity={0.6} />
              <stop offset="1" stopColor="var(--ns-sleep-deep)" stopOpacity={0.5} />
            </linearGradient>
          </defs>
          {LANES.map((l, k) => (
            <g key={l.stage}>
              {wide && (
                <text x={0} y={k * lh + lh / 2 + 4} className="fill-[var(--ns-ink-3)] text-[length:var(--ns-text-meta)]">
                  {l.name}
                </text>
              )}
              <line x1={GX} x2={W} y1={k * lh + lh / 2} y2={k * lh + lh / 2} stroke="var(--ns-line-soft)" strokeWidth={1} />
            </g>
          ))}
          {/* the risers: each stretch joined to the next */}
          {stretches.slice(0, -1).map((x, i) => {
            const n = stretches[i + 1]!;
            const y1 = Y(x.stage) + lh / 2, y2 = Y(n.stage) + lh / 2;
            return <rect key={`r${i}`} x={X(x.to) - 1} y={Math.min(y1, y2)} width={2} height={Math.abs(y2 - y1)} rx={1} fill={`url(#${id}v)`} />;
          })}
          {deep && <rect x={X(deep.from)} y={by("deep")} width={X(deep.to) - X(deep.from)} height={bar} rx={bar / 2} fill="var(--ns-glow)" opacity={0.55} filter={`url(#${id}g)`} />}
          {stretches.map((x, i) => (
            <rect key={i} x={X(x.from) + 0.5} y={by(x.stage)} width={Math.max(3, X(x.to) - X(x.from) - 1)} height={bar} rx={Math.min(bar / 2, 9)} fill={LANES[lane(x.stage)]!.color} />
          ))}
          {[0, ...ticks, end].map((m, i, a) => (
            <text key={m} x={X(m)} y={height - 4} textAnchor={i === 0 ? "start" : i === a.length - 1 ? "end" : "middle"} className="fill-[var(--ns-ink-3)] font-[family-name:var(--ns-font-mono)] text-[length:var(--ns-text-meta)]">
              {i === 0 && wide ? `In bed ${bed}` : i === a.length - 1 && wide ? `Woke ${clock(bed, m)}` : clock(bed, m)}
            </text>
          ))}
        </svg>
        {deep && (
          <span aria-hidden className="absolute -translate-x-1/2 rounded-full bg-[var(--ns-ink)] px-2 py-[3px] font-[family-name:var(--ns-font-mono)] text-[length:var(--ns-text-meta)] leading-none whitespace-nowrap text-[var(--ns-canvas)]" style={{ left: Math.min(W - 50, Math.max(50, (X(deep.from) + X(deep.to)) / 2)), top: by("deep") - 16 }}>
            Deep · {dur(deep.to - deep.from)}
          </span>
        )}
      </div>
      <ChartTableToggle open={table} onToggle={() => setTable(!table)} />
      <ChartTable caption={label} head={["From", "To", "Stage", "Length"]} rows={stretches.map((x) => [clock(bed, x.from), clock(bed, x.to), LANES[lane(x.stage)]!.name, dur(x.to - x.from)])} open={table} />
    </div>
  );
}

export { NightRibbon, type NightRibbonProps, type NightRibbonStage, type NightRibbonStretch };
```

The foundation (the tokens listed above, keyframes and motion levels) installs once with the first component; its CSS is public at https://notchset.dev/r/notchset-foundation.json.