Custom select range style

"use client"

import { useState } from "react"
import { addDays } from "date-fns"
import type { DateRange } from "react-day-picker"

import { Calendar } from "@/components/ui/calendar"
import { Card, CardContent } from "@/components/ui/card"

export function Pattern() {
  const today = new Date()
  const [date, setDate] = useState<DateRange | undefined>({
    from: today,
    to: addDays(today, 5),
  })

  return (
    <Card className="p-0">
      <CardContent className="p-0">
        <Calendar
          classNames={{
            day: "relative before:absolute before:inset-y-px before:inset-x-0 [&.range-start:not(.range-end):before]:bg-linear-to-r before:from-transparent before:from-50% before:to-accent before:to-50% [&.range-end:not(.range-start):before]:bg-linear-to-l",
            day_button:
              "!rounded-full group-[.range-start:not(.range-end)]:rounded-e-full group-[.range-end:not(.range-start)]:rounded-s-full",
          }}
          mode="range"
          onSelect={setDate}
          selected={date}
        />
      </CardContent>
    </Card>
  )
}