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Stack Fan Dock

A dock whose fourth slot is a document stack: press it and four tinted cards fan upward in a 54° arc with a staggered spring, press again to gather them; idle it fans open for 1.7 s and closes for 2.3 s on its own.

csslight complexitymoderate motionclick

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When to use it

Recent-files or quick-actions menus in a dock, launcher, or toolbar; any place a single slot should reveal a small set without a full menu.

When not to

Sets larger than ~5 items (the fan gets crowded) and layouts with no headroom above the dock for the cards to rise into.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Add a card by appending another <span class="c14-card"> and giving it its own --tint/--a/--d nth-child rule (spread the --a angles evenly); change the rise with the -1.15 in the .is-open transform; make hover-only by removing the click handler. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.

Safe to edit

  • card count, tints (--c1…--c4) and fan angles (--a per card)
  • stagger (--d per card) and spring curve (cubic-bezier(.34,1.4,.64,1))
  • rise distance (translateY -1.15 × --sz)
  • demo timing (phase 5 open / 22 close on a 100 ms clock)
  • dock items and gradients (--g1, --g2, --g3, --g5)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • transform-origin 50% 100% on .c14-card (the fan pivots from the slot)
  • aria-expanded kept in step by setOpen()
  • IIFE wrapper
  • visibilitychange stop/start of the phase clock
  • prefers-reduced-motion guard (cards fade, no spring)
  • lastInput pause so the demo never fights a real press
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)

Known limitations

  • The cards are decorative — no titles or click targets inside them yet
  • The dock is bottom-anchored (padding-bottom 12%) to leave room for the fan; re-centre it and the top cards may clip
  • Light re-theme via the [data-theme=light] token block; catalog bg/accent describe the dark default

dockstackfanfoldernavigationmacosdocumentsspring

More Navigation components

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  • Radial Fan MenuA core button rotates to an X and fans five glowing stone-toned icon petals outward in a staggered spring arc; auto-cycles open/close as a demo.
  • Slide-in DrawerHamburger icon morphs to an X while a side panel slides in over a dark scrim, revealing four nav items with staggered fade-in animations.
  • Underline FollowA glowing emerald-to-tan gradient underline slides and resizes to follow hovered nav links; wanders idly across links when unhovered.