An open design language · est. 2026

Structured
Liquidity

Rigid containers with sharp, uncompromising edges. Inside them, a liquid glass that reflects light and lends every surface tactile depth. Structured Liquidity is the discipline of the grid married to the delight of the material — a complete UI language, not a single product's skin.

Structured containment Liquid depth Semantic clarity
Principles · the foundation

Structure holds it. Liquidity fills it.

Most systems pick a side — flat utility or glossy depth. Structured Liquidity refuses the choice: a rigid, unambiguous grid holding a fluid, living material. Three pillars, each with the working rules that keep it honest.

Pillar 01

Structured Containment

Sharp 90° corners, flat unblurred shadows, a strict grid. Boundaries are never ambiguous.

  • Shadows stay flat — offset, solid, hard-edged. A structural fact, not a mood.
  • Borders carry weight — 2–3px, never decorative. The edge defines the object.
Pillar 02

Liquid Depth

Inside the rigid boxes, a tactile glass — organic, translucent, light-reflecting, alive.

  • Depth through layers — stack translucent surfaces, each with a real border and flat shadow.
  • Motion proves mass — press a surface and it settles into its own shadow.
Pillar 03

Semantic Clarity

Liquidity delights, but never at the expense of reading. Function leads.

  • One accent, clearly — a single accent carries emphasis; glass stays neutral so it lands.
  • Type with intent — heavy grotesk for impact, monospace for labels and data.
Components · the toolkit

A complete library,
in the language.

Every primitive you'd expect from a modern component kit — buttons, forms, overlays, navigation, data display — each one a rigid container holding liquid glass. All live: click, type, toggle, open.

ActionsBadge · Button · Dropdown · Toggle
Badge
Default Secondary Outline
Live Error
Button — variants & sizes
Dropdown menu
My account
Profile⌘P
Settings⌘,
Invite team
Sign out
Menubar
Toggle & toggle group
Content & dataCarousel · Chart · Collapsible · Empty · Fonts · Item · Typography
Carousel
Chart
Collapsible
Theme tokens
Accent, blur, border weight, corner radius, and flat-shadow offset — every knob behind the language.
Empty
No tracks yet Import audio to start a library.
Fonts
Set 01 · Canonical
HeaderArchivo BodyOutfit DetailSpace Mono
Confident grotesque header, warm body, technical mono — the default.
Set 02 · Editorial
HeaderSyne BodyInter DetailIBM Plex Mono
Expressive display over a neutral workhorse — marketing and brand surfaces.
Set 03 · Modern
HeaderBricolage Grotesque BodyPlus Jakarta Sans DetailJetBrains Mono
Quirky contemporary grotesque with a clean body and developer mono.
Item
U
universe.audio
Audio platform · Live
SL
Structured Liquidity
Design language
Typography

Structure holds it.

Heavy grotesk for impact, monospace for labels, and a measured body that stays legible through the glass. Inline --accent tokens carry the system.

Liquidity is for depth, never at the expense of clarity.
Data displayAlert · Avatar · Calendar · Card · Table
Alert

Heads up

Tokens sync every deploy.

Build failed

Border weight must be ≥ 1px.

Avatar
SL JD
ABC+5
Tooltip · hover card
Flat offset shadow
U
universe.audio
Built on SL
Calendar / date picker
June 2026
SMTWTFS 31123456 78910111213 14151617181920 21222324252627
Card

Waveform v2

Real-time spectral display with glass overlays.

Table / data table
TokenValueSurfaceStatus
--accent#a388eeSolidLive
--glass-alpha0.07GlassLive
--hard-x7pxShadowDraft
--radius0pxEdgeLive
Fields & controlsButton group · Field · Input group · Kbd · Native select · Spinner
Button group
Field
Already taken — try another.
Shown on your public profile.
Input group
https://
⌘K
Kbd
Command K
Save S
Native select
Spinner
Forms & inputsCheckbox · Input · OTP · Select · Slider · Switch
Checkbox
Liquid glass surfaces
Flat shadows
Sharp 90° corners
Input OTP
Input · label · textarea
Progress · skeleton
Radio group
Dark mode
Light mode
System
Select
Glass
Hybrid
Solid
Flat
Command / combobox
Suggestions
New file
Open project
Toggle theme
Export tokens
Copy CSS variables
Switch · slider
Notifications
Reduced motion
60%
Layout & structureAspect ratio · Resizable · Scroll area · Separator · Sidebar
Aspect ratio
16 / 9
Resizable
Drag the corner →
Liquid fills the rest
Scroll area
Track 01 — Aurora
Track 02 — Meniscus
Track 03 — Offset
Track 04 — Specular
Track 05 — Viscosity
Track 06 — Containment
Track 07 — Refraction
Separator
Docs API Tokens

A hairline at full border weight — horizontal or vertical.

Sidebar
A structural rail — rigid border, glass fill, one accent for the active route.
Menus & overlaysAlert dialog · Context menu · Drawer · Navigation menu
Alert dialog

A blocking confirm for destructive actions.

Context menu
Right-click surface
Play
Add to queue⌘Q
Share
Remove
Drawer

A panel that rises from the bottom edge.

Navigation menu Hover an item for its flyout.
NavigationMarquee · Menubar · Navbar
Marquee
Navigation bar
universe.audio
Catalog
New releases
Genres
Languages
U
Navigation & disclosureAccordion · Breadcrumb · Pagination · Tabs
Accordion
What is Structured Liquidity?

A UI language pairing rigid grids and flat shadows with liquid glass surfaces.

Is it tied to one product?

No — universe.audio is one example. The system is product-agnostic.

Can I theme the accent?

Yes. One accent token drives every emphasis across the kit.

Breadcrumb
Pagination
Tabs
A glass surface in a rigid frame — what you see in the preview pane.
Copy-paste markup with utility classes, ready to drop in.
Every value exposed as a CSS custom property you can theme.
Overlays & feedbackDialog · Popover · Sheet · Toast
Dialog

A modal that settles into its shadow on open.

Popover
Dimensions

Set the container width and radius.

Sheet

A side panel that slides in from the edge.

Toast / sonner
Stacks bottom-right, auto-dismisses.
Showcase · the prototypes

From Principles
to Practice.

The system is product-agnostic — the same rigid grid and liquid glass that document the language run unchanged in shipping work. universe.audio is the first product built on it, here in production rather than in a spec sheet.

universe.audio
Screenshot of the universe.audio homepage, an interface built on Structured Liquidity

Spectral mixing, streaming, and an acoustic-first interface — every surface a rigid container holding liquid glass, themed on the universe accent.

Visit universe.audio
U
universe.audio Audio platform
Live
Agent-ready · adopt the language

Built to be read by machines.

Structured Liquidity ships its rules, tokens, and components in formats an AI agent can read directly — so the language travels into new products without losing its grammar. Point any AI tool at the files below, or paste the prompt into your assistant.

Build with Structure. Flow with Liquidity.

Structured Liquidity is an open UI language — a complete kit of rigid containers and liquid glass. Take the three pillars, theme the accent, and build something rigorous, tactile, and unmistakably clear.

Reset to defaults?

This restores every token to the Structured Liquidity baseline — accent, blur, border weight, and shadow offset. This can't be undone.

Theme settings

Side panels slide in from the structural edge and carry their own border + shadow.

Glass blur
Flat shadows

Delete project?

This permanently removes universe.audio and all of its tokens, surfaces, and history. This action cannot be undone.

Now playing

Drawers rise from the structural edge — full-width, with their own top border and flat shadow.