maud-ui 0.2.1

64 headless, accessible UI components for Rust web apps — shadcn Base UI API parity. Plus block templates, a live theme customiser, and shell hooks for 15 third-party widgets (Monaco, xyflow, Excalidraw, Three.js, AG Grid, Leaflet, FullCalendar, SortableJS, and more). Built on maud + htmx, styled like shadcn/ui.
Documentation
/* Sidebar Component Styles — collapsible app-shell sidebar.
   State is driven by `data-state="expanded"|"collapsed"` set on the <aside>.
   Companion JS (dist/behaviors/sidebar.js) wires Cmd/Ctrl+B + trigger clicks. */

.mui-sidebar-provider {
  display: flex;
  min-height: 100dvh;
  width: 100%;
  background: var(--mui-bg);
  color: var(--mui-text);
}

.mui-sidebar {
  display: flex;
  flex-direction: column;
  width: var(--mui-sidebar-w, 16rem);
  height: 100dvh;
  flex-shrink: 0;
  position: relative;
  border-right: 1px solid var(--mui-border);
  background: var(--mui-bg-card);
  color: var(--mui-text);
  transition: width 0.2s ease, transform 0.2s ease, margin 0.2s ease;
  overflow: hidden;
}

/* Side — right anchors to the right edge */
.mui-sidebar[data-side="right"] {
  border-right: 0;
  border-left: 1px solid var(--mui-border);
  order: 2;
}

/* Variant — floating sits inside the viewport with rounded edges */
.mui-sidebar[data-variant="floating"] {
  margin: 0.5rem;
  height: calc(100dvh - 1rem);
  border-radius: var(--mui-radius-lg);
  border: 1px solid var(--mui-border);
  box-shadow: var(--mui-shadow-md);
}

/* Variant — inset hugs the content card style */
.mui-sidebar[data-variant="inset"] {
  margin: 0.25rem;
  height: calc(100dvh - 0.5rem);
  border-radius: var(--mui-radius-lg);
  border: 1px solid var(--mui-border);
}

/* Collapsible — offcanvas slides completely off the screen */
.mui-sidebar[data-state="collapsed"][data-collapsible="offcanvas"] {
  transform: translateX(-100%);
  width: 0;
  border-right-width: 0;
  border-left-width: 0;
}
.mui-sidebar[data-side="right"][data-state="collapsed"][data-collapsible="offcanvas"] {
  transform: translateX(100%);
}

/* Collapsible — icon shrinks to a narrow icon-only rail */
.mui-sidebar[data-state="collapsed"][data-collapsible="icon"] {
  width: 3rem;
}
.mui-sidebar[data-state="collapsed"][data-collapsible="icon"] .mui-sidebar__group-label,
.mui-sidebar[data-state="collapsed"][data-collapsible="icon"] .mui-sidebar__brand-name,
.mui-sidebar[data-state="collapsed"][data-collapsible="icon"] .mui-sidebar__user-name,
.mui-sidebar[data-state="collapsed"][data-collapsible="icon"] .mui-sidebar__menu-badge,
.mui-sidebar[data-state="collapsed"][data-collapsible="icon"] .mui-sidebar__menu-button > span:not([aria-hidden="true"]) {
  display: none;
}
.mui-sidebar[data-state="collapsed"][data-collapsible="icon"] .mui-sidebar__menu-button {
  justify-content: center;
  padding-inline: 0.5rem;
}

/* Collapsible — none disables collapse entirely (force always expanded) */
.mui-sidebar[data-collapsible="none"] {
  transform: none !important;
  width: var(--mui-sidebar-w, 16rem) !important;
}

/* Header */
.mui-sidebar__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--mui-border);
  min-height: 3rem;
}
.mui-sidebar__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
}
.mui-sidebar__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--mui-radius-md);
  background: var(--mui-accent);
  color: var(--mui-accent-fg);
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

/* Content — scrollable region */
.mui-sidebar__content {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Footer */
.mui-sidebar__footer {
  padding: 0.5rem 0.75rem;
  border-top: 1px solid var(--mui-border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.mui-sidebar__user {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--mui-text);
}
.mui-sidebar__user-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--mui-radius-full);
  background: var(--mui-bg-input);
  color: var(--mui-text);
  font-size: 0.75rem;
  font-weight: 600;
  flex-shrink: 0;
}

/* Group */
.mui-sidebar__group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  position: relative;
}
.mui-sidebar__group-label {
  padding: 0.25rem 0.5rem;
  color: var(--mui-text-muted);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.mui-sidebar__group-action {
  position: absolute;
  top: 0.125rem;
  inset-inline-end: 0.25rem;
  width: 1.5rem;
  height: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--mui-text-muted);
  border-radius: var(--mui-radius-sm);
  cursor: pointer;
  transition: var(--mui-transition);
}
.mui-sidebar__group-action:hover {
  background: var(--mui-bg-input);
  color: var(--mui-text);
}
.mui-sidebar__group-content {
  display: flex;
  flex-direction: column;
}

/* Menu */
.mui-sidebar__menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}
.mui-sidebar__menu-item {
  position: relative;
  display: flex;
  align-items: center;
}
.mui-sidebar__menu-button {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.625rem;
  border-radius: var(--mui-radius-md);
  border: none;
  background: transparent;
  color: var(--mui-text);
  font: inherit;
  font-size: 0.875rem;
  text-align: start;
  cursor: pointer;
  transition: var(--mui-transition);
  min-height: 2rem;
  width: 100%;
}
.mui-sidebar__menu-button:hover {
  background: var(--mui-bg-input);
}
.mui-sidebar__menu-button[aria-current="page"],
.mui-sidebar__menu-button[data-active="true"] {
  background: var(--mui-bg-input);
  color: var(--mui-text);
  font-weight: 500;
}
.mui-sidebar__menu-action {
  position: absolute;
  inset-inline-end: 0.25rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.5rem;
  height: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--mui-text-muted);
  border-radius: var(--mui-radius-sm);
  cursor: pointer;
  opacity: 0;
  transition: var(--mui-transition);
}
.mui-sidebar__menu-item:hover .mui-sidebar__menu-action {
  opacity: 1;
}
.mui-sidebar__menu-badge {
  margin-inline-start: auto;
  padding: 0 0.375rem;
  min-width: 1.25rem;
  height: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 600;
  border-radius: var(--mui-radius-full);
  background: var(--mui-bg-input);
  color: var(--mui-text-muted);
}

/* Sub-menu */
.mui-sidebar__menu-sub {
  list-style: none;
  margin: 0.125rem 0 0.125rem 0.5rem;
  padding: 0 0 0 0.5rem;
  border-inline-start: 1px solid var(--mui-border);
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}
.mui-sidebar__menu-sub-item {
  display: flex;
  align-items: center;
}
.mui-sidebar__menu-sub-item > .mui-sidebar__menu-button {
  font-size: 0.8125rem;
  padding-block: 0.375rem;
}

/* Skeleton */
.mui-sidebar__menu-skeleton {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.625rem;
  width: 100%;
}
.mui-sidebar__menu-skeleton-icon {
  width: 1rem;
  height: 1rem;
  border-radius: var(--mui-radius-sm);
  background: var(--mui-bg-input);
  flex-shrink: 0;
}
.mui-sidebar__menu-skeleton-text {
  flex: 1 1 auto;
  height: 0.75rem;
  border-radius: var(--mui-radius-sm);
  background: var(--mui-bg-input);
}

/* Trigger button — small chrome element in top bar */
.mui-sidebar__trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}
.mui-sidebar__trigger-icon {
  font-size: 1rem;
  line-height: 1;
}

/* Rail — thin interactive strip at the sidebar's trailing edge */
.mui-sidebar__rail {
  position: absolute;
  top: 0;
  bottom: 0;
  inset-inline-end: 0;
  width: 4px;
  border: none;
  background: transparent;
  cursor: col-resize;
  transition: background 0.15s ease;
  padding: 0;
}
.mui-sidebar__rail:hover,
.mui-sidebar__rail:focus-visible {
  background: var(--mui-border-hover);
}
.mui-sidebar[data-side="right"] .mui-sidebar__rail {
  inset-inline-end: auto;
  inset-inline-start: 0;
}

/* Inset — layout sibling holding main content */
.mui-sidebar-inset {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--mui-bg);
}
.mui-sidebar-inset__bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--mui-border);
  min-height: 3rem;
}
.mui-sidebar-inset__title {
  font-weight: 600;
  font-size: 0.9375rem;
}
.mui-sidebar-inset__body {
  flex: 1 1 auto;
  padding: 1rem;
  overflow-y: auto;
}