@fluid

Eight-level surface and shadow ladder for elevation. Light: two color steps then flat white, differentiated by shadow. Dark: additive white-opacity ladder with…

Shared interaction-state tokens: surface-relative hover/active overlays (bg-hover, bg-active), the selected fill, the destructive-light ground, the --overlay R…

Utility function for merging Tailwind CSS classes with clsx and tailwind-merge.

Spring animation token presets for Framer Motion (fast, moderate, slow).

Variable font weight tokens for Inter (normal, medium, semibold, bold) using font-variation-settings.

React context that tracks the current substrate elevation level. Elevated components (Dropdown, Select, etc.) read it via useSurface() and render at substrate …

Static lookup tables for bg-surface-N and shadow-surface-N utilities. Required because Tailwind v4 cannot detect template-literal class names.

Elevation primitive. Wraps the read-substrate / compute-level / apply-classes / re-provide-context pattern into one component. Pulls in the surface theme token…

Shared popup chrome for the dropdown, select, and combobox popups: side-aware enter/exit motion classes driven by the positioner's resolved data-side, the Scro…

React context provider for runtime shape variant switching (pill or rounded). Controls border-radius across all Fluid Functionalism components.

React context provider for the two-step size ladder (36px default, 28px compact). Controls control heights, text, icon, and padding scale across all Fluid Func…

Named icon slots with a Lucide default set; swap any icon via IconProvider.

Fluid hover: the hook that tracks the item nearest the cursor within a container, and the one highlight component that springs between the rects it measures.

Detects touch-primary devices (coarse pointer + touch points), updating live on pointer-mode and media-query changes. Adapted from Lina (https://lina.sameer.sh…

Gates a popup's keyboard focus ring on keyboard use: seeded at open from the focused element's :focus-visible state, then earned by navigation keys inside the …

React hook + renderer for the selected-background merge/split animation. When one row bridges or splits two contiguous selected runs, their inner edges glide t…

Collapsible accordion with animated height transitions, spring-animated chevron, and fluid hover in grouped mode. Built on Radix UI Accordion.

Collapsible accordion with animated height transitions, spring-animated chevron, and fluid hover in grouped mode. Base UI flavor.

Stepped question flow with numbered options, keyboard shortcuts (1–9), single or multi-select, inline 'other' text input, optional skip, fluid hover, and multi…

Compact label with solid and dot variants, Tailwind color palette, and three sizes.

Animated button with variants (primary, secondary, tertiary, ghost), icon support, loading spinner, and fluid font-weight transitions on hover.

Animated button with variants (primary, secondary, tertiary, ghost), icon support, loading spinner, and fluid font-weight transitions on hover. Base UI flavor.

Dropdown menu with fluid hover, animated selection indicator, inline panel or triggered popup with collision-aware positioning, typeahead, and close-on-select.…

Dropdown menu with fluid hover, animated selection indicator, inline panel or triggered popup with collision-aware positioning, typeahead, and close-on-select.…

Animated checkbox group with fluid hover, contiguous selection merging, and spring-animated check marks. Built on Radix UI Checkbox.

Animated checkbox group with fluid hover, contiguous selection merging, and spring-animated check marks. Base UI flavor.

Animated radio group with fluid hover, spring-animated selection dot, and optional Radix UI integration. Supports both controlled index and value-based APIs.

Animated radio group with fluid hover, spring-animated selection dot. Base UI flavor.

Animated modal dialog with spring-based scale and opacity transitions in three widths (sm, lg, and an xl canvas for composed layouts such as a sidebar), plus a…

Animated modal dialog with spring-based scale and opacity transitions in three widths (sm, lg, and an xl canvas for composed layouts such as a sidebar), plus a…

Slide-in navigation drawer with scrim, focus trap, and scroll lock. Radix flavor.

Slide-in navigation drawer with scrim, focus trap, and scroll lock. Base UI flavor.

Read-only input with a copy-to-clipboard button and animated check feedback. Supports optional label and shape context.

Grouped input fields with fluid hover highlighting, animated label transitions, optional icons, and error states.

Chat-style message composer with auto-resizing textarea, drag-and-drop file attachments (PNG / JPEG / PDF), flexible left/right action slots, and a built-in se…

Read-only square preview of a File. Images render via object-cover; PDFs render their first page via pdfjs; a spinner shows while either resolves. Adapts its c…

Sonner-style stack of queued composer messages: collapsed cards fan out on hover (tap on touch), drag to reorder, a gutter arrow counts the overflow, edit/remo…

A single chat transcript entry with baked-in entrance and layout motion. Right-aligned accent bubble for the user, left-aligned muted bubble for the assistant,…

Horizontal tab navigation with fluid hover, animated pill selection indicator, and fluid font-weight transitions. Radix flavor.

Horizontal tab navigation with fluid hover, animated pill selection indicator, and fluid font-weight transitions. Base UI flavor.

Animated toggle switch with spring-based thumb animation and fluid font-weight label transitions. Built on Radix UI Switch.

Animated toggle switch with spring-based thumb animation and fluid font-weight label transitions. Base UI flavor.

Animated table with fluid hover row highlighting and fluid border transitions. Includes TableHeader, TableBody, TableRow, TableHead, and TableCell sub-componen…

shadcn's compositional card (Card, CardHeader, CardTitle, CardDescription, CardAction, CardContent, CardFooter) with the Fluid Functionalism layer: transparent…

Refined, composable app sidebar with offcanvas collapse, floating and inset variants, a mobile drawer, cookie-persisted state, keyboard shortcut, and fluid-hov…

Refined, composable app sidebar with offcanvas collapse, floating and inset variants, a mobile drawer, cookie-persisted state, keyboard shortcut, and fluid-hov…

Shared popup geometry for sidebar-anchored dropdown menus: trigger width +10px shifted -4px, items on the rows' leading and text axes, trailing glyphs on the t…

Workspace brand row for a sidebar header: 20px tile on the rows' leading axis, name pinned to the 32px text axis, trigger cross-fading into the tile's slot whi…

Footer identity row: a 20px avatar centred on the rows' leading icon axis, chevron on the trailing action axis, and an upward user menu on the shared sidebar g…

Header search on the menu rows' rhythm: leading icon on the rows' 16px axis, text on the 32px axis, and a hover-revealed keystroke chip at the trailing edge.

The main region's topbar: h-12 with the trigger that hides while the rail peeks and fades back in at its settled spot after a pin.

A complete app shell: workspace header with the peek cross-fade, search on the menu rows' rhythm with a hover-revealed shortcut chip, collapsible sections with…

A settings dialog: the xl Dialog as a canvas, a non-collapsing Sidebar of sections down its left edge, and a scrolling panel of controls — switches, selects, a…

Animated slider with spring-snapped thumb, step dots, range mode, and click-to-edit value display. Built on Radix UI Slider.

Animated slider with spring-snapped thumb, step dots, range mode, and click-to-edit value display. Base UI flavor.

Segmented control tabs with sliding active indicator, fluid hover, and spring animations. Built on Radix UI Tabs.

Segmented control tabs with sliding active indicator, fluid hover, and spring animations. Base UI flavor.

Animated loading indicator with morphing SVG path (circle to infinity loop) and shimmer text rotation. Cycles through customizable status words.

Scroll container with a restyled overlay scrollbar that stays discoverable on hover and follows the shape system. Falls back to native overflow scrolling on to…

Scroll container with a restyled overlay scrollbar that stays discoverable on hover and follows the shape system. Falls back to native overflow scrolling on to…

Animated select menu with collision-aware positioning, typeahead, fluid hover, spring-animated popover, and animated checkmark. Radix flavor.

Animated select menu with collision-aware positioning, typeahead, fluid hover, spring-animated popover, and animated checkmark. Base UI flavor.

Type-to-filter combobox with single or multiple (chips, merged selection backgrounds) selection: a text field that filters a list as you type, with keyboard hi…

Type-to-filter combobox with single or multiple (chips, merged selection backgrounds) selection: a text field that filters a list as you type, with keyboard hi…

Search field over a list of actions: type to filter, arrows to move the fluid hover highlight, Enter to run. Grouped rows with icons, descriptions, and shortcu…

Floating tooltip with spring-based animations, configurable placement, and rich content support.

Floating tooltip with spring-based animations, configurable placement, and rich content support. Base UI flavor.

Collapsible AI reasoning steps with animated expand/collapse, per-step icons, sources, and nested details. Radix flavor.

Collapsible AI reasoning steps with animated expand/collapse, per-step icons, sources, and nested details. Base UI flavor.

Color picker with HEX, RGB, HSL, and OKLCH formats, alpha channel, optional swatches, and a popover trigger. Built on Base UI's Popover, Menu, and NumberField …