button-group

1import { mergeProps } from "@base-ui/react/merge-props"
2import { useRender } from "@base-ui/react/use-render"
3import { cva, type VariantProps } from "class-variance-authority"
4 
5import { cn } from "@/lib/utils"
6import { Separator } from "@/components/ui/separator"
7 
8const buttonGroupVariants = cva(
9  cn(
10    // The GROUP itself is the cohesive NeoBrutalist unit: a single bold border +
11    // one hard offset shadow wrapping every segment, so it reads as ONE unit.
12    // The frame animates so the whole group can press like a single Button.
13    "relative inline-flex w-fit items-stretch border-2 border-foreground bg-background shadow-md transition-all duration-200",
14    // Segments become flush fills — the frame owns the border, shadow and corners.
15    "[&>*]:rounded-none",
16    "[&>:is(button,a)]:border-0 [&>:is(button,a)]:shadow-none!",
17    // Segments never translate on their own — only the whole frame moves.
18    "[&>:is(button,a)]:hover:translate-y-0! [&>:is(button,a)]:active:translate-x-0! [&>:is(button,a)]:active:translate-y-0!",
19    // The WHOLE group presses into its shadow like a single Button: hover sinks it
20    // toward the shadow, press sits it flush (shadow gone).
21    "has-[:is(button,a):hover]:translate-y-1 has-[:is(button,a):hover]:shadow",
22    "has-[:is(button,a):active]:translate-y-2 has-[:is(button,a):active]:translate-x-1 has-[:is(button,a):active]:shadow-none",
23    // When a group CONTAINS nested groups it becomes a plain gapped container
24    // (no frame / shadow / press) so each nested sub-group is its own pressable
25    // unit instead of pressing the whole outer frame.
26    "has-[>[data-slot=button-group]]:gap-2 has-[>[data-slot=button-group]]:border-0 has-[>[data-slot=button-group]]:bg-transparent has-[>[data-slot=button-group]]:shadow-none! has-[>[data-slot=button-group]]:translate-x-0! has-[>[data-slot=button-group]]:translate-y-0!",
27    // The hovered/pressed segment darkens in place via a full-bleed inset tint, so
28    // you can still tell which segment you're acting on while the frame presses.
29    "[&>:is(button,a):hover]:shadow-[inset_0_0_0_999px_#00000012]! [&>:is(button,a):active]:shadow-[inset_0_0_0_999px_#0000001f]!",
30 
31    "dark:[&>:is(button,a):hover]:shadow-[inset_0_0_0_999px_#ffffff1f]! dark:[&>:is(button,a):active]:shadow-[inset_0_0_0_999px_#ffffff33]!",
32    // Solid dark segments (secondary) always lighten on hover — a dark tint would
33    // be invisible on a black button in light mode.
34// … truncated