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
/* HoverCard component — richer hover overlay with structured content */
/* shadcn: bg-popover border rounded-md shadow-md p-4 w-64 */

.mui-hover-card {
  display: inline-block;
  position: relative;
}

.mui-hover-card__trigger {
  display: inline-flex;
  cursor: pointer;
  transition: var(--mui-transition);
}

.mui-hover-card__trigger:focus-visible {
  outline: 2px solid var(--mui-border-focus);
  outline-offset: 2px;
}

.mui-hover-card__content {
  position: absolute;
  background: var(--mui-bg-card);
  color: var(--mui-text);
  padding: 1rem;
  border-radius: var(--mui-radius-md);
  border: 1px solid var(--mui-border);
  width: 16rem; /* w-64 = 16rem */
  box-shadow: var(--mui-shadow-md);
  outline: none;
  z-index: 50;
  /* Animation: fade + scale like shadcn */
  opacity: 0;
  pointer-events: none;
  transform-origin: var(--mui-hover-card-origin, left top);
  transform: var(--mui-hover-card-translate, none) scale(0.95);
  transition:
    opacity var(--mui-transition),
    transform var(--mui-transition);
}

.mui-hover-card__content[data-visible="true"] {
  opacity: 1;
  pointer-events: auto;
  transform: var(--mui-hover-card-translate, none) scale(1);
}

.mui-hover-card__content[hidden] {
  display: none;
}

/* Side: anchor to a side of the trigger */
.mui-hover-card__content--bottom {
  top: calc(100% + 0.375rem);
  --mui-hover-card-origin: center top;
}

.mui-hover-card__content--top {
  bottom: calc(100% + 0.375rem);
  --mui-hover-card-origin: center bottom;
}

.mui-hover-card__content--right {
  inset-inline-start: calc(100% + 0.375rem);
  top: 0;
  --mui-hover-card-origin: left center;
}

.mui-hover-card__content--left {
  inset-inline-end: calc(100% + 0.375rem);
  top: 0;
  --mui-hover-card-origin: right center;
}

/* Align: position along the trigger edge (applies to top/bottom sides) */
.mui-hover-card__content--align-start {
  inset-inline-start: 0;
}

.mui-hover-card__content--align-center {
  inset-inline-start: 50%;
  --mui-hover-card-translate: translateX(-50%);
}

.mui-hover-card__content--align-end {
  inset-inline-end: 0;
  inset-inline-start: auto;
}

/* Align overrides for side=left/right (align along vertical axis) */
.mui-hover-card__content--right.mui-hover-card__content--align-start,
.mui-hover-card__content--left.mui-hover-card__content--align-start {
  top: 0;
  inset-inline-start: calc(100% + 0.375rem);
}

.mui-hover-card__content--left.mui-hover-card__content--align-start {
  inset-inline-start: auto;
  inset-inline-end: calc(100% + 0.375rem);
}

.mui-hover-card__content--right.mui-hover-card__content--align-center,
.mui-hover-card__content--left.mui-hover-card__content--align-center {
  top: 50%;
  --mui-hover-card-translate: translateY(-50%);
  inset-inline-start: calc(100% + 0.375rem);
}

.mui-hover-card__content--left.mui-hover-card__content--align-center {
  inset-inline-start: auto;
  inset-inline-end: calc(100% + 0.375rem);
}

.mui-hover-card__content--right.mui-hover-card__content--align-end,
.mui-hover-card__content--left.mui-hover-card__content--align-end {
  top: auto;
  bottom: 0;
  inset-inline-start: calc(100% + 0.375rem);
  inset-inline-end: auto;
}

.mui-hover-card__content--left.mui-hover-card__content--align-end {
  inset-inline-start: auto;
  inset-inline-end: calc(100% + 0.375rem);
}

/* User profile card styling */
.mui-hover-card__user {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mui-hover-card__user-header {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.mui-hover-card__user-info {
  flex: 1;
  min-width: 0;
}

.mui-hover-card__user-name {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.25;
}

.mui-hover-card__user-handle {
  margin: 0;
  font-size: 0.75rem;
  color: var(--mui-text-muted);
  line-height: 1.25;
}

.mui-hover-card__user-bio {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--mui-text-muted);
}