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 
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/* InputGroup component — input with prefix/suffix/block addons as one visual unit */

.mui-input-group {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap; /* block-start / block-end addons wrap to their own row */
  width: 100%;
  border: 1px solid var(--mui-border);
  border-radius: var(--mui-radius-md);
  overflow: hidden;
  background: transparent;
  transition: border-color 150ms cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hover on the whole group */
.mui-input-group:hover:not(:focus-within) {
  border-color: var(--mui-border-hover);
}

/* Focus ring wraps entire group — matching Input component style */
.mui-input-group:focus-within {
  border-color: transparent;
  box-shadow: 0 0 0 2px var(--mui-bg), 0 0 0 4px var(--mui-border-focus);
}

/* Prefix & suffix addons — distinct muted background */
.mui-input-group__prefix,
.mui-input-group__suffix {
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  color: var(--mui-text-muted);
  font-family: var(--mui-font-sans);
  font-size: 0.875rem;
  background: var(--mui-bg-input);
  white-space: nowrap;
  user-select: none;
}

.mui-input-group__prefix {
  border-inline-end: 1px solid var(--mui-border);
}

.mui-input-group__suffix {
  border-inline-start: 1px solid var(--mui-border);
}

/* Input inside the group — no border, inherits group ring */
.mui-input-group > input,
.mui-input-group > .mui-input {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  min-width: 0;
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--mui-text);
  padding: 0.5rem 0.75rem;
  height: 2.25rem;
  box-sizing: border-box;
}

.mui-input-group > input::placeholder,
.mui-input-group > .mui-input::placeholder {
  color: var(--mui-text-muted);
}

.mui-input-group > input:focus,
.mui-input-group > .mui-input:focus {
  outline: none;
  box-shadow: none;
}

/* Buttons inside suffix/prefix */
.mui-input-group__suffix > button,
.mui-input-group__prefix > button {
  background: transparent;
  border: none;
  color: var(--mui-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0 0.25rem;
  transition: color 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

.mui-input-group__suffix > button:hover,
.mui-input-group__prefix > button:hover {
  color: var(--mui-text);
}

/* -----------------------------------------------------------------------------
   P1 addon + control surfaces (shadcn Base UI parity)
   --------------------------------------------------------------------------- */

/* Base addon surface — mirrors prefix/suffix styling; align modifiers reposition it. */
.mui-input-group__addon {
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  color: var(--mui-text-muted);
  font-family: var(--mui-font-sans);
  font-size: 0.875rem;
  background: var(--mui-bg-input);
  white-space: nowrap;
  user-select: none;
}

/* InlineStart — leading addon, sits before the control. */
.mui-input-group__addon--inline-start {
  order: -1;
  border-inline-end: 1px solid var(--mui-border);
}

/* InlineEnd — trailing addon, sits after the control. */
.mui-input-group__addon--inline-end {
  order: 99;
  border-inline-start: 1px solid var(--mui-border);
}

/* BlockStart — full-width banner above the control row. */
.mui-input-group__addon--block-start {
  order: -2;
  flex-basis: 100%;
  border-block-end: 1px solid var(--mui-border);
  justify-content: flex-start;
  padding: 0.5rem 0.75rem;
  background: transparent;
}

/* BlockEnd — full-width footer/hint below the control row. */
.mui-input-group__addon--block-end {
  order: 100;
  flex-basis: 100%;
  border-block-start: 1px solid var(--mui-border);
  justify-content: flex-start;
  padding: 0.5rem 0.75rem;
  background: transparent;
  white-space: normal; /* hints can wrap across lines */
}

/* InputGroupText — muted supplementary label inside an addon. */
.mui-input-group__text {
  font-size: 0.875rem;
  color: var(--mui-text-muted);
  line-height: 1;
}

/* data-slot="input-group-control" wrapper — flex child that owns the control.
   Reset chrome so the inner <input>/<textarea> inherits the group's ring. */
.mui-input-group__control,
.mui-input-group > [data-slot="input-group-control"] {
  display: flex;
  flex: 1;
  min-width: 0;
}

.mui-input-group__control > .mui-input,
.mui-input-group__control > .mui-textarea,
.mui-input-group > [data-slot="input-group-control"] > .mui-input,
.mui-input-group > [data-slot="input-group-control"] > .mui-textarea {
  border: none;
  outline: none;
  background: transparent;
  flex: 1;
  min-width: 0;
  width: 100%;
  box-sizing: border-box;
}

.mui-input-group__control > .mui-input:focus,
.mui-input-group__control > .mui-textarea:focus,
.mui-input-group > [data-slot="input-group-control"] > .mui-input:focus,
.mui-input-group > [data-slot="input-group-control"] > .mui-textarea:focus {
  outline: none;
  box-shadow: none;
}

/* Buttons rendered via `input_group::button()` — strip addon padding; the button
   already owns its own hit area. */
.mui-input-group__addon--inline-end > .mui-btn,
.mui-input-group__addon--inline-start > .mui-btn {
  margin: 0.25rem;
}