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Component Skill — components/dock/component-skill.md

Native basis

<nav> of links, buttons or radio labels; the active item is aria-current / aria-pressed / a checked radio (:has()).

Web Platform APIs

aria-current:has()env(safe-area-inset-bottom)backdrop-filter

Classes

.dock.dock-item.dock-icon.dock-label.dock-badge.dock-dot.dock-view.dock-panels.dock-panel

Data attributes

data-variant (muted, primary, neutral, glass, floating), data-size (xs … xl), data-indicator (bar, pill, dot), data-labels (active, none), data-position (top, left, right, static), data-attach="container", data-effect="magnify", data-autohide, data-raised on an item (a FAB there opens a semicircle dial).

§Dock

A bottom navigation bar that switches the view above it: the items are <label>s with a hidden radio, the .dock-view shows the .dock-panel at the checked item's position - a click or the arrow keys, no JavaScript. Fixed to the bottom (here: of the example frame), clear of the phone's home indicator. For real page links use <a class='dock-item' aria-current='page'>.

§Floating

data-variant='floating' - a rounded pill hovering above the bottom edge (the pill indicator by default), here pinned inside a phone frame with data-attach='container'.

§Badges and dots

A .dock-badge (a count) or a .dock-dot (tones, data-animate='ping') inside the icon marks news on an item. The card closes with the dock: class='card dock-view' makes the in-flow dock the card's footer, clipped by its rounded corners.

§Emojis

Any glyph works in .dock-icon - emojis size with the icon scale.

§Raised center action

The middle item is a FAB (class='dock-item fab' data-raised data-layout='flower' data-position='bottom-center'): the raised + opens a semicircle of actions over the dock; the × closes it, an action closes it too. The other items switch the view (the raised item keeps its place with an empty panel).

§Top dock

data-position='top' - fixed to the top edge, the bar indicator on its lower edge.

§Side docks

data-position='left' / 'right' - a column down the edge (the bar on the outer side); with data-variant='floating' a vertical pill, centered. Both pinned inside frames here (data-attach='container').

§Magnify

data-effect='magnify': the hovered item grows and its neighbours a little - the macOS dock, borderless (off for reduced motion).

§Autohide

data-autohide tucks the dock away at its edge - only a sliver shows; bring the pointer close to the bottom of the frame (or tab into it) and it slides in. With magnify, the macOS dock.

§Right to left

Logical throughout - in dir='rtl' the first item sits on the right, badges hug the other side.

§Sizes

data-size xs · sm · md (default) · lg · xl - height, icon and label scale together.

§Colors

data-variant: muted, primary, neutral, glass (over an image) - the active item takes the surface's strong color.

§Labels and indicators

data-labels='active' shows only the active label, 'none' icons only (labels remain the names); data-indicator bar (default), pill or dot.

§CSS view file

/* -- Dock component ------------------------------------------------ */
@layer components {
  /* A bottom navigation bar (daisyUI's dock, plus): a <nav class="dock"> of
     .dock-item links / buttons / labels, each an icon (.dock-icon - an svg
     or an emoji, optionally with a .dock-badge or .dock-dot) over a
     .dock-label. Fixed to the bottom of the viewport by default, clear of
     the device's safe area. The active item is aria-current="page" (links),
     aria-pressed="true" (buttons) or a checked radio inside a <label> - the
     radio form switches the active item with no JavaScript at all.
     data-indicator: bar (default) / pill / dot. CSS only. */
  .dock {
    --_h: 4rem;
    box-sizing: border-box; /* the size IS the bar height, border included */
    --_icon: 1.375rem;
    --_label: 0.6875rem;
    --_accent: var(--primary);
    position: fixed;
    z-index: 40;
    inset-inline: 0;
    bottom: 0;
    display: flex;
    align-items: stretch;
    justify-content: space-around;
    height: calc(var(--_h) + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    padding-inline: 0.25rem;
    border-top: 1px solid var(--border);
    background-color: var(--background);
    color: var(--muted-foreground);
    /* -- Placement ------------------------------------------------------- */
    &[data-position="static"] { position: static; height: var(--_h); padding-bottom: 0; }
    &[data-position="top"] { bottom: auto; top: 0; border-top: 0; border-bottom: 1px solid var(--border); padding-bottom: 0; height: var(--_h); }
    &[data-attach="container"] { position: absolute; }
    /* side docks: a column down the left / right edge */
    &:is([data-position="left"], [data-position="right"]) {
      inset: 0 auto 0 0;
      flex-direction: column;
      justify-content: center;
      gap: 0.25rem;
      width: calc(var(--_h) + 0.5rem);
      height: auto;
      padding: 0.5rem 0.25rem;
      border-top: 0;
      border-inline-end: 1px solid var(--border);
      & .dock-item { flex: 0 0 auto; padding-block: 0.625rem; }
    }
    &[data-position="right"] { inset: 0 0 0 auto; border-inline-end: 0; border-inline-start: 1px solid var(--border); }
    /* -- Sizes ------------------------------------------------------------ */
    &[data-size="xs"] { --_h: 2.75rem; --_icon: 1.125rem; --_label: 0.625rem; }
    &[data-size="sm"] { --_h: 3.375rem; --_icon: 1.25rem; --_label: 0.625rem; }
    &[data-size="md"] { --_h: 4rem; --_icon: 1.375rem; --_label: 0.6875rem; }
    &[data-size="lg"] { --_h: 4.75rem; --_icon: 1.625rem; --_label: 0.75rem; }
    &[data-size="xl"] { --_h: 5.5rem; --_icon: 1.875rem; --_label: 0.8125rem; }
    /* -- Surfaces --------------------------------------------------------- */
    &[data-variant="muted"] { background-color: var(--muted); border-color: transparent; }
    &[data-variant="primary"] {
      --_accent: var(--primary-foreground);
      background-color: var(--primary);
      color: color-mix(in oklch, var(--primary-foreground) 65%, transparent);
      border-color: transparent;
    }
    &[data-variant="neutral"] {
      --_accent: var(--background);
      background-color: color-mix(in oklch, var(--foreground) 82%, var(--background));
      color: color-mix(in oklch, var(--background) 62%, transparent);
      border-color: transparent;
    }
    &[data-variant="glass"] {
      background-color: color-mix(in oklch, var(--background) 60%, transparent);
      backdrop-filter: blur(16px) saturate(1.5);
      border-color: color-mix(in oklch, var(--foreground) 12%, transparent);
    }
    /* floating: a rounded bar hovering above the bottom edge */
    &[data-variant="floating"] {
      inset-inline: 1rem;
      bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
      height: var(--_h);
      padding: 0 0.375rem;
      border: 1px solid var(--border);
      border-radius: 9999px;
      box-shadow: var(--shadow-lg);
      max-width: 32rem;
      margin-inline: auto;
    }
    &[data-variant="floating"][data-position="static"] { margin-block: 0.5rem; }
    &[data-variant="floating"]:is([data-position="left"], [data-position="right"]) {
      inset-block: 0;
      height: fit-content;
      max-height: calc(100% - 2rem);
      margin-block: auto;
      margin-inline: 0;
      padding: 0.375rem 0.25rem;
      border: 1px solid var(--border);
    }
    &[data-variant="floating"][data-position="left"] { left: 1rem; }
    &[data-variant="floating"][data-position="right"] { right: 1rem; left: auto; }
    &[data-variant="floating"][data-position="top"] { top: 1rem; bottom: auto; }
  }
  /* -- Items ------------------------------------------------------------ */
  .dock-item {
    position: relative;
    display: flex;
    flex: 1 1 0;
    min-width: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.25rem;
    border: 0;
    background: none;
    color: inherit;
    font: inherit;
    text-decoration: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: color 150ms ease, scale 180ms ease, translate 180ms ease;
    &:hover { color: var(--foreground); }
    .dock:is([data-variant="primary"], [data-variant="neutral"]) &:hover { color: var(--_accent); }
    &:focus-visible { outline: 2px solid var(--ring); outline-offset: -4px; border-radius: var(--radius-lg); }
    &:has(> input:focus-visible) { outline: 2px solid var(--ring); outline-offset: -4px; border-radius: var(--radius-lg); }
    &:is(:disabled, [aria-disabled="true"]) { opacity: 0.45; pointer-events: none; }
    /* the radio form: the input is invisible, the label is the item */
    & > input[type="radio"] {
      position: absolute;
      opacity: 0;
      pointer-events: none;
    }
  }
  .dock-icon {
    position: relative;
    display: inline-grid;
    place-items: center;
    width: calc(var(--_icon) + 1.5rem);
    height: calc(var(--_icon) + 0.375rem);
    border-radius: 9999px;
    font-size: var(--_icon);
    line-height: 1;
    transition: background-color 180ms ease, color 180ms ease;
    & svg { width: var(--_icon); height: var(--_icon); }
  }
  .dock-label {
    max-width: 100%;
    overflow: hidden;
    font-size: var(--_label);
    font-weight: 500;
    line-height: 1.2;
    white-space: nowrap;
    text-overflow: ellipsis;
  }
  /* -- Active item ------------------------------------------------------ */
  .dock-item:is([aria-current="page"], [aria-current="true"], [aria-pressed="true"], [data-active], :has(> input:checked)) {
    color: var(--_accent);
    & .dock-label { font-weight: 600; }
  }
  /* bar (default): a short line on the top edge (bottom edge for a top dock) */
  .dock:not([data-indicator]) .dock-item::before,
  .dock[data-indicator="bar"] .dock-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 0;
    height: 3px;
    translate: -50% 0;
    border-radius: 0 0 3px 3px;
    background-color: var(--_accent);
    transition: width 200ms ease;
  }
  .dock[data-position="top"] .dock-item::before { top: auto; bottom: 0; border-radius: 3px 3px 0 0; }
  .dock:is([data-position="left"], [data-position="right"]) .dock-item::before {
    top: 50%;
    left: 0;
    width: 3px;
    height: 0;
    translate: 0 -50%;
    border-radius: 0 3px 3px 0;
    transition: height 200ms ease;
  }
  .dock[data-position="right"] .dock-item::before { left: auto; right: 0; border-radius: 3px 0 0 3px; }
  .dock:is([data-position="left"], [data-position="right"]):is(:not([data-indicator]), [data-indicator="bar"]) .dock-item:is([aria-current="page"], [aria-current="true"], [aria-pressed="true"], [data-active], :has(> input:checked))::before {
    width: 3px;
    height: 2.25rem;
  }
  .dock:is(:not([data-indicator]), [data-indicator="bar"]) .dock-item:is([aria-current="page"], [aria-current="true"], [aria-pressed="true"], [data-active], :has(> input:checked))::before {
    width: 2.25rem;
  }
  .dock[data-variant="floating"]:not([data-indicator]) .dock-item::before { display: none; }
  .dock[data-variant="floating"]:not([data-indicator]) .dock-item:is([aria-current="page"], [aria-current="true"], [aria-pressed="true"], [data-active], :has(> input:checked)) .dock-icon,
  /* pill: a tinted capsule behind the active icon (Material 3) */
  .dock[data-indicator="pill"] .dock-item:is([aria-current="page"], [aria-current="true"], [aria-pressed="true"], [data-active], :has(> input:checked)) .dock-icon {
    background-color: color-mix(in oklch, var(--_accent) 16%, transparent);
  }
  /* dot: a small dot under the label */
  .dock[data-indicator="dot"] .dock-item::after {
    content: '';
    position: absolute;
    bottom: 0.3rem;
    left: 50%;
    width: 4px;
    height: 4px;
    translate: -50% 0;
    border-radius: 9999px;
    background-color: var(--_accent);
    scale: 0;
    transition: scale 180ms ease;
  }
  .dock[data-indicator="dot"] .dock-item:is([aria-current="page"], [aria-current="true"], [aria-pressed="true"], [data-active], :has(> input:checked))::after { scale: 1; }
  /* -- Labels: always (default), only for the active item, or none ------ */
  .dock[data-labels="active"] .dock-item:not([aria-current="page"], [aria-current="true"], [aria-pressed="true"], [data-active], :has(> input:checked)) .dock-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  .dock[data-labels="none"] .dock-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }
  /* -- Badges and dots on an icon ---------------------------------------- */
  .dock-badge {
    position: absolute;
    top: -0.3rem;
    inset-inline-start: calc(50% + 0.35rem);
    min-width: 1.125rem;
    height: 1.125rem;
    padding-inline: 0.3rem;
    border-radius: 9999px;
    background-color: var(--destructive);
    color: var(--destructive-foreground, #fff);
    box-shadow: 0 0 0 2px var(--background);
    font-size: 0.625rem;
    font-weight: 700;
    line-height: 1.125rem;
    text-align: center;
  }
  .dock-dot {
    position: absolute;
    top: 0;
    inset-inline-start: calc(50% + 0.45rem);
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 9999px;
    background-color: var(--_c, var(--primary));
    box-shadow: 0 0 0 2px var(--background);
    &[data-tone="success"] { --_c: oklch(0.65 0.17 150); }
    &[data-tone="warning"] { --_c: oklch(0.78 0.16 75); }
    &[data-tone="destructive"] { --_c: var(--destructive); }
    &[data-animate="ping"]::after {
      content: '';
      position: absolute;
      inset: 0;
      border-radius: inherit;
      background-color: inherit;
      animation: dock-ping 1.4s cubic-bezier(0, 0, 0.2, 1) infinite;
    }
  }
  @keyframes dock-ping { 75%, 100% { scale: 2.4; opacity: 0; } }
  /* -- Raised center action (data-raised on an item) --------------------- */
  .dock-item[data-raised],
  .dock-item[data-raised]:is([aria-current], [aria-pressed="true"], [data-active], :has(> input:checked)) {
    /* always the primary-foreground glyph - the accent color of an active
       item is --primary, the raised disc's own color */
    color: var(--primary-foreground);
    & .dock-icon {
      width: calc(var(--_h) - 0.75rem);
      height: calc(var(--_h) - 0.75rem);
      /* lifted with a margin, not a transform: a FAB menu anchored to this
         icon (anchor positioning ignores transforms) lands where it shows */
      margin-block-start: calc((var(--_h) - 0.75rem) * -0.7);
      padding: 0;
      border: 0;
      background-color: var(--primary);
      color: var(--primary-foreground);
      box-shadow: var(--shadow-lg), 0 0 0 4px var(--background);
      cursor: pointer;
    }
    & .dock-icon:focus-visible { outline: 2px solid var(--ring); outline-offset: 3px; }
    & .dock-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
    &::before, &::after { display: none; }
    &:hover { color: var(--primary-foreground); }
    &:hover .dock-icon { background-color: color-mix(in oklch, var(--primary) 88%, var(--primary-foreground)); }
  }
  /* a FAB as the raised item: <div class="dock-item fab" data-raised
     data-layout="flower" data-position="bottom-center"> with a
     .fab-trigger.dock-icon button and a .fab-menu popover - the dial fans
     out over the dock (fab.css: a semicircle from the center) */
  .dock .fab.dock-item {
    position: relative;
    inset: auto;
    z-index: auto;
    justify-content: center;
    pointer-events: auto;
  }
  .dock .fab.dock-item > .fab-trigger { box-shadow: var(--shadow-lg), 0 0 0 4px var(--background); }
  /* -- Magnify (macOS): the hovered item grows, its neighbours a little -- */
  .dock[data-effect="magnify"] {
    overflow: visible;
    align-items: center;
    border: 0;
    & .dock-item { transform-origin: 50% 100%; }
    & .dock-item:hover { scale: 1.35; translate: 0 -0.35rem; z-index: 1; }
    & .dock-item:has(+ .dock-item:hover),
    & .dock-item:hover + .dock-item { scale: 1.15; translate: 0 -0.15rem; }
    &[data-position="top"] .dock-item { transform-origin: 50% 0; }
    &[data-position="top"] .dock-item:hover { translate: 0 0.35rem; }
    &[data-position="top"] :is(.dock-item:has(+ .dock-item:hover), .dock-item:hover + .dock-item) { translate: 0 0.15rem; }
    &[data-position="left"] .dock-item { transform-origin: 0 50%; }
    &[data-position="left"] .dock-item:hover { translate: 0.35rem 0; }
    &[data-position="left"] :is(.dock-item:has(+ .dock-item:hover), .dock-item:hover + .dock-item) { translate: 0.15rem 0; }
    &[data-position="right"] .dock-item { transform-origin: 100% 50%; }
    &[data-position="right"] .dock-item:hover { translate: -0.35rem 0; }
    &[data-position="right"] :is(.dock-item:has(+ .dock-item:hover), .dock-item:hover + .dock-item) { translate: -0.15rem 0; }
  }
  /* -- Autohide: tucked away at its edge, it slides in when the pointer
     comes close (a strip of it stays reachable, plus a hit zone past it)
     or when focus enters - the macOS dock. data-autohide on the .dock. */
  .dock[data-autohide] {
    --_peek: 6px;
    transition: translate 260ms cubic-bezier(0.2, 0.8, 0.2, 1);
    translate: 0 calc(100% - var(--_peek));
    &[data-variant="floating"] { translate: 0 calc(100% + 1rem - var(--_peek)); }
    &[data-position="top"] { translate: 0 calc(-100% + var(--_peek)); }
    &[data-position="top"][data-variant="floating"] { translate: 0 calc(-100% - 1rem + var(--_peek)); }
    &[data-position="left"] { translate: calc(-100% + var(--_peek)) 0; }
    &[data-position="left"][data-variant="floating"] { translate: calc(-100% - 1rem + var(--_peek)) 0; }
    &[data-position="right"] { translate: calc(100% - var(--_peek)) 0; }
    &[data-position="right"][data-variant="floating"] { translate: calc(100% + 1rem - var(--_peek)) 0; }
    &:is(:hover, :focus-within) { translate: 0 0; }
    /* reach: an invisible zone beyond the tucked edge */
    &::after {
      content: '';
      position: absolute;
      inset-inline: 0;
      bottom: 100%;
      height: 1.5rem;
    }
    &[data-position="top"]::after { bottom: auto; top: 100%; }
    &[data-position="left"]::after { inset: 0 auto 0 100%; width: 1.5rem; height: auto; }
    &[data-position="right"]::after { inset: 0 100% 0 auto; width: 1.5rem; height: auto; }
  }
  /* -- Views: the dock switches a card's content, CSS only --------------
     A .dock-view holds the radio .dock and a .dock-panels of .dock-panel
     elements in the same order as the items: the panel at position k shows
     while item k's radio is checked. (An item without a radio - the raised
     action - keeps its place with an empty panel.) */
  .dock-panel { display: none; }
  /* a card that closes with its dock: <div class="card dock-view"> holds the
     .dock-panels and an in-flow dock as its footer - the dock drops its own
     edges and the card's rounded corners clip it (one frame, no square
     border under a round corner) */
  .card.dock-view {
    display: flex;
    flex-direction: column;
    & > .dock-panels { flex: 1 1 auto; }
    & > .dock[data-position="static"] {
      border-inline: 0;
      border-bottom: 0;
      border-radius: 0;
      box-shadow: none;
    }
  }
  .dock-view:has(.dock > .dock-item:nth-child(1) > input:checked) .dock-panels > .dock-panel:nth-child(1),
  .dock-view:has(.dock > .dock-item:nth-child(2) > input:checked) .dock-panels > .dock-panel:nth-child(2),
  .dock-view:has(.dock > .dock-item:nth-child(3) > input:checked) .dock-panels > .dock-panel:nth-child(3),
  .dock-view:has(.dock > .dock-item:nth-child(4) > input:checked) .dock-panels > .dock-panel:nth-child(4),
  .dock-view:has(.dock > .dock-item:nth-child(5) > input:checked) .dock-panels > .dock-panel:nth-child(5),
  .dock-view:has(.dock > .dock-item:nth-child(6) > input:checked) .dock-panels > .dock-panel:nth-child(6),
  .dock-view:has(.dock > .dock-item:nth-child(7) > input:checked) .dock-panels > .dock-panel:nth-child(7) {
    display: block;
    animation: dock-panel-in 220ms ease both;
  }
  @keyframes dock-panel-in { from { opacity: 0; translate: 0 6px; } }
  /* -- Accessibility ------------------------------------------------------ */
  @media (prefers-reduced-motion: reduce) {
    .dock-item, .dock-icon, .dock-item::before, .dock-item::after { transition: none; }
    .dock[data-effect="magnify"] .dock-item { scale: none !important; translate: none !important; }
    .dock-dot[data-animate]::after { animation: none; }
    .dock-panel { animation: none !important; }
    .dock[data-autohide] { transition: none; }
  }
  @media (forced-colors: active) {
    .dock { border-top: 1px solid CanvasText; }
    .dock-item:is([aria-current="page"], [aria-pressed="true"], [data-active], :has(> input:checked)) { outline: 2px solid Highlight; outline-offset: -4px; }
  }
}

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