The shadcn/ui layer everything else in Flux is built out of: 35 files in src/components/ui/, mostly copied in unchanged and never touched again. That is exactly why they are worth showing. The interesting facts about this layer are not how the buttons look, they are which primitive got rewritten (one), which primitives shipped and are imported by nothing (six), and which capable pieces of machinery the app quietly declined to use.
The things a person operates. All ten are stock shadcn/ui wrappers over Radix (or over react-day-picker, in the calendar's case): a cva variant table, a forwardRef, and the project's cn() helper. Flux styles them entirely through its own tokens, so a stock file still comes out violet.
asChild escape hatch that renders the styling onto whatever child you pass, which is how every link-that-looks-like-a-button in Flux works.Stock shadcn/ui, unmodified. Every icon inside a button is forced to 16px by the base class [&_svg]:size-4, which is why no caller ever sets an icon size. The disabled look is disabled:opacity-50 plus disabled:pointer-events-none, so a disabled button is not dimmed-but-clickable, it is inert.
<input> with classes: no label wiring, no error slot, no validation. Everything Flux knows about a field lives in the caller.Stock. One detail that matters for this showcase: the text size is text-base md:text-sm, so it is 16px on a phone and 14px from the medium breakpoint up. That 16px is not a style choice, it is what stops iOS Safari zooming the page when the field is focused. Every card on this page renders at desktop width, so you are seeing the 14px branch.
Stock, with one cosmetic difference from its neighbours: this is the only file in ui/ written with single quotes and no space inside the import braces. It was clearly formatted by a different tool than the other 34. Nothing renders differently.
htmlFor, so clicking the word focuses the field. 28 files import it, second only to Button.Stock. It carries a cva call with no variants at all, which is shadcn's own template artefact and does nothing. Its one real behaviour is the pair peer-disabled:cursor-not-allowed peer-disabled:opacity-70: a label dims itself when the control it is a sibling of is disabled.
Stock. The border is border-primary rather than border-input, so an unchecked checkbox is already violet-outlined and reads as interactive before you touch it. That is shadcn's default and Flux kept it.
Stock. The group itself is grid gap-2, so radios stack with an 8px gutter unless the caller overrides it. Both callers in Flux do override it, which is a small sign that the default spacing was never quite right for this app.
Stock. Off is bg-input, the same grey as a text field's border, so an off switch and an empty field are deliberately the same colour. The thumb travels exactly 20px (translate-x-5) inside a 44px track.
Stock, and it renders a single thumb because Radix emits one thumb per value in the array and this file hardcodes exactly one SliderPrimitive.Thumb. A two-handle range is therefore not available in Flux without editing this file.
Stock. Items are padded pl-8 to reserve room for the check mark whether or not they are selected, which is why an unselected item's text still starts 32px in. The chevron sits at opacity-50.
| Mo | Tu | We | Th | Fr | Sa | Su |
|---|---|---|---|---|---|---|
| 24 | 25 | 26 | 27 | 28 | 1 | 2 |
| 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 17 | 18 | 19 | 20 | 21 | 22 | 23 |
Stock, including showOutsideDays = true, which is why the greyed-out tail of the previous month is shown. The nav arrows are not their own component: they reuse buttonVariants({ variant: "outline" }) and then shrink it to h-7 w-7, so they are a Button's styling on a day-picker's element.
The things that hold other things: panels, overlays and dividers. Flux leans hard on this group. Card alone is imported by 32 files, which makes it the shape of nearly every screen in the product.
Content sits at p-6 with the top padding removed, so it hangs directly off the header without a double gutter.
Stock. CardTitle defaults to text-2xl, which is 24px and far too large for most of what Flux puts in a card, so almost every caller overrides it. The stat tile above is the pattern the admin Stats tab uses: Description on top, Title underneath, no content at all, and the visual hierarchy inverted by size rather than by order.
Stock. Its overlay is bg-black/80, which is a much heavier dim than most light themes use. The panel itself is bg-background (#F5F5F5), not bg-card, so a Flux dialog is very slightly grey rather than white, and a Card placed inside one is visible as a lighter rectangle.
Stock. Left and right sheets are w-3/4 capped at sm:max-w-sm (384px), so on a phone a side sheet covers three quarters of the screen and on a desktop it is a fixed narrow column. Top and bottom sheets have no height cap at all: they are as tall as their content, which is why the bottom sheet is the one Flux uses on mobile.
Stock. Fixed at w-72 (288px) unless overridden, and offset 4px from its trigger. Reproduced here at that exact width so the wrapping behaviour is the product's, not this page's.
Stock. It ships no arrow: Radix offers TooltipArrow and this file does not export it, so no tooltip anywhere in Flux has a pointer connecting it to its trigger. Position is carried by proximity alone.
Stock, including hover:underline on the trigger, which is the one shadcn default that reads oddly here: hovering a section heading underlines it as if it were a link. The chevron rotates 180 degrees via [&[data-state=open]>svg]:rotate-180.
Stock, and the shortest file in ui/ at 11 lines: three re-exports of the Radix primitive with no cn() and no classes at all. It is here because it is one of the 35, not because it has a look of its own.
decorative, which means screen readers skip it rather than announcing a separator.Stock. Vertical separators are h-full, so one only appears if its parent has a height. Drop it into a plain div and it collapses to nothing, silently, which is the most common way this primitive appears to be broken.
How the app tells you something: that it worked, that it did not, that it is still thinking. Between them Badge and Toast carry almost every status signal in Flux, and because both offer a destructive variant, red is the app's whole vocabulary for "bad".
Stock. There are only two variants: no success, no warning, no info. Anything Flux wants to say that is neither neutral nor a failure has to be a default alert with a chosen icon, which is why the neutral one above carries an info glyph the component itself knows nothing about.
Stock. Note what the variant list is missing: there is no success variant, so "approved" and "primary action" are the same violet. The outline variant sets only text-foreground and relies on the base class's border, so it is the one variant whose colour comes from the border token rather than from a fill.
Stock. Padding is p-6 pr-8, which is 24px all round and 32px on the right to clear the close button, so a two-word toast is still 72px tall. The close X is opacity-0 until the toast is hovered or focused: it is shown here so you can see it exists.
toast() call anywhere in Flux surfaces through this.The queue is one toast deep. The stack above is what the viewport's layout would do, but the app's toast hook caps the list at a single entry, so a second toast() replaces the first rather than stacking under it. Padding is reduced here to fit two in a card; the real toast is p-6, as shown on the Toast card.
Stock, and worth reading closely: the fill is a full-width bar translated left by 100 - value percent, not a bar whose width is set. At 0 it is still there, parked entirely outside the track. That is also why a missing or undefined value renders as 0 rather than as an error.
className.Stock, 15 lines, and the only file in ui/ that imports neither React nor Radix. Its animation is animate-pulse, which dips to 50% opacity and back on a 2 second cycle. Reproduced faithfully here, including honouring reduced-motion, which the product does automatically through Tailwind's own media query handling.
Stock. AvatarFallback sets only bg-muted: no text size, no weight, no colour. Every caller therefore has to style its own initials, and the fallback is what people actually see, because Flux stores no avatar images. The image branch exists and is effectively unreachable.
Two primitives for showing rows and for switching between panels. Both are stock, and both are used sparingly: Flux is a calendar, so most of its data is positioned rather than listed.
<table>. Only two files import it, and both are in the admin panel, which makes Table the most admin-specific primitive in the set.| Code | Uses | Status | Actions |
|---|---|---|---|
| FLUX-2K4M | 0 / 1 | active | |
| FLUX-8QRT | 1 / 1 | exhausted |
| Code | Uses | Status | Actions |
|---|
The empty variant is the finding. TableBody with no rows renders the header and then stops: no message, no placeholder row. Every caller that wants an empty state has to check the array length itself and render something else instead of the table. Rows are shown compact here to fit the card; the real header is 48px and cells are 16px-padded, as in ui/table.tsx.
Stock. The active trigger is data-[state=active]:bg-background, and since TabsList itself is bg-muted, the selected tab reads as a raised chip in a grey trough. The list is inline-flex with no wrapping and no overflow handling, so enough tabs will push it past its container rather than scroll.
Of the 35 primitives, 34 are stock shadcn/ui. This is the exception, and it is a big one: 804 lines, the largest file in ui/ by a factor of two, and the only primitive that reaches back into the application it is supposed to know nothing about.
What actually diverges from stock, line by line. It imports useSettings() from the app's settings context, a coupling stock shadcn's sidebar does not have. It adds handleMouseEnter / handleMouseLeave to implement "open on hover". It computes an effectiveCollapsible that overrides the collapsible prop the caller passed, deriving it from the 4-way sidebarDisplayMode instead. SIDEBAR_WIDTH_ICON is "3.25rem" where stock is 3rem. And the mobile SheetContent gains a real SheetHeader with the title "Menu" and the description "Navigate through the application.", which stock leaves as a screen-reader-only stub. The same SheetContent is passed [&>button]:hidden, which suppresses the Sheet's own close X, so the mobile rail is dismissed by tapping outside it or by pressing Escape and by nothing else.
One more thing worth stating plainly. SIDEBAR_KEYBOARD_SHORTCUT = "b" makes Cmd/Ctrl+B toggle the rail, and that window.addEventListener("keydown", ...) is the only global key handler in the entire codebase. There is no command palette, no shortcut sheet, nothing else to learn. A 35-file primitives layer, and the app's whole keyboard surface lives in one of them.
Six primitives are in the bundle's source tree and imported by zero files. They arrived with the shadcn scaffold and were never reached for. Two of them are more interesting than the other four, because the app did not skip the job they do: it did the job by hand instead.
Flux draws four charts. Every one of them bypasses this file and uses raw Recharts directly. The four are the two circular views, the insights summary report, and the time analysis view; all four import from recharts and none import from ui/chart. So the tooltip styling, the legend styling and the theme variable injection this file provides are all rebuilt by hand at each call site, or not at all.
Every form in Flux is hand-rolled useState instead. This file is the only place in the whole of src/ that imports react-hook-form, and since nothing imports this file, the library is in the dependency tree and reaches no user. The practical consequence is that the accessibility wiring it exists to provide, the label-to-input id binding and the aria-describedby pointing at the error message, is absent from every field in the product.
The difference this would have made: an AlertDialog cannot be dismissed with Escape or an outside click, so a destructive choice has to be answered. Flux's delete confirmations are Dialogs, which can be waved away.
It brings its own third-party dependency, embla-carousel-react, which is therefore installed for a component no screen renders. The most plausible reading is that it came in with the scaffold: Flux has no gallery, no onboarding slides and nothing else a carousel would serve.
overflow-auto and the operating system's own bar.This is the one whose absence you can see in the product: the calendar, the inbox and the admin tables all scroll with the native bar, which on Windows is a wide grey gutter and on macOS is an overlay that fades. The component that would have made those identical is sitting right here, unimported.