A KPI card wired to a seismograph. The paper keeps rolling with a resting tremor. Every change in value sets off a quake sized to the change, shakes the number, counts up to it and leaves a labelled marker on the roll.
import { useEffect, useState } from "react"
import { SeismographStat } from "@/components/ui/seismograph-stat"
const money = (n: number) => `$${Math.round(n).toLocaleString()}`
const ms = (n: number) => `${Math.round(n)} ms`
export default function SeismographStatDemo() {
const [revenue, setRevenue] = useState(48210)
const [signups, setSignups] = useState(1204)
const [latency, setLatency] = useState(182)
useEffect(() => {
const a = setInterval(() => setRevenue((v) => v + Math.round((Math.random() - 0.3) * 900)), 2600)
const b = setInterval(() => setSignups((v) => v + Math.round(Math.random() * 14)), 1900)
const c = setInterval(() => setLatency((v) => Math.max(60, v + Math.round((Math.random() - 0.5) * 40))), 3300)
return () => {
clearInterval(a)
clearInterval(b)
clearInterval(c)
}
}, [])
return (
<div className="flex h-full min-h-[560px] w-full flex-col items-center justify-center gap-6 bg-background p-6">
<div className="grid w-full max-w-5xl gap-4 md:grid-cols-3">
<SeismographStat label="Revenue today" value={revenue} format={money} accent="#22c55e" />
<SeismographStat label="New sign-ups" value={signups} accent="#3b82f6" />
<SeismographStat label="p95 latency" value={latency} format={ms} accent="#ef4444" />
</div>
<button
onClick={() => setRevenue((v) => Math.round(v * 1.35))}
className="rounded-full border border-border px-4 py-2 text-sm text-foreground transition-colors hover:bg-foreground hover:text-background"
>
Trigger a revenue spike
</button>
</div>
)
}