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No.54 · Buttons· New

Upload Drop Zone

A wide dashed target for files: drop one on it or click to browse. Dragging over it lifts the cloud and turns the edge solid; once a file is chosen it becomes a file card with a progress bar, then a tick, or a plain reason it failed with Retry.

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Written for the variant you picked above: Light

Build a file drop zone that turns itself into the upload's progress. Inter at 500, 15px. Palette (light / dark): ink #111111 / #ededed, muted #6b6b6b / #a0a0a0, card #ffffff / #141414, hairline #e2e2e2 / #2b2b2b, dashes #c9c9c9 / #3d3d3d, solid button #111111 with white text / #ededed with #0a0a0a text, accent #2563eb / #6ea8fe with a wash of #eff4ff / #101b2e, track #ececec / #262626, done #15803d / #3fb950, error #c81e1e / #ff6369. Idle: a card up to 28rem wide and at least 104px tall with a 1.5px dashed edge and 16px corners: a 52px rounded square with a cloud-and-arrow icon, 'Drop a file here or browse' (browse underlined in the accent) and 'PDF, PNG or JPG, up to 20 MB' in muted 13px. Dragging over it turns the edge solid accent, washes it pale and lifts the icon 4px ('Drop to upload'). During the upload it becomes a card with a document tile, the shortened name, 'x MB of y MB', a 4px accent progress bar, the percentage and a cancel cross; done turns the bar green, shows a tick and 'Upload another'. Behaviour: a hidden <input type=file> opened by a real button; dropping a file on the control works too (with a visible drag state). Check the file against accept and a size limit first and say why in plain words if it's refused ('That file is 31 MB; the limit is 20 MB.'). Uploading takes an upload(file, progress, signal) function; the default simulates a believable transfer (uneven but always forward, 1.1–4.2s by size) and fails when the browser is offline. Cancel aborts it. A failure shows the reason and 'Retry', which sends the same file again. Long names are shortened in the middle, keeping the extension. Progress is announced in quarters in a polite live region, along with the start, the end, cancelling and errors. Show it centred on a #f6f6f5 / #0a0a0a page. Selected variant — Light (light): Palette for this theme (Light): --dzub-accent #2563eb; --dzub-bad #c81e1e; --dzub-btn #111111; --dzub-btn-ink #ffffff; --dzub-card #ffffff; --dzub-dash #c9c9c9; --dzub-edge #e2e2e2; --dzub-focus #2563eb; --dzub-ink #111111; --dzub-ok #15803d; --dzub-soft #6b6b6b; --dzub-track #ececec; --dzub-wash #eff4ff. Treat these as the root colour tokens, one value per role, and name them to suit your code. Select it with the theme option set to "light". Keep every dimension, spacing value, state and motion from the brief unchanged, and keep text at 4.5:1 contrast or better on these surfaces. This selection takes precedence over references to other themes or options in the general brief. Implement this selected appearance; do not add a variant picker or alternative appearances unless requested. Implementation requirements: Use React and TypeScript. Keep the component self-contained, with uniquely scoped CSS and no animation libraries. Include required imports, styles and font setup in the result. Interaction: Click (or Enter/Space) to browse, or drop a file on it. While uploading, the cross cancels. When done, 'Upload another' resets; when it fails, Retry resends. Motion: Progress follows the transfer frame by frame; dragging lifts the cloud 4px; the tick pops. Reduced motion keeps the progress but drops the entrances and lifts. Accessibility: Real buttons; the hidden input is out of the tab order. Progress is a progressbar with its value; the cancel cross is labelled with the file name; errors are text, not just colour; progress is announced in quarters. Responsive behavior: The zone fills its container up to 28rem. Touch: Tapping opens the system file or photo picker; drag and drop is an extra, not a requirement. Preserve keyboard access, visible focus and reduced-motion behavior. Keep fictional demo data and simulated service calls in a separate usage example; expose callbacks for real actions and recover from rejected requests. Keep usage-example links inside the demo: use local buttons or prevent navigation. Demonstration links must not navigate to Vitrine routes or open other pages; preserve real URL support in the reusable component itself. Verify the result at narrow and wide viewport sizes, with keyboard input and reduced motion enabled.

Notes

Interaction
Click (or Enter/Space) to browse, or drop a file on it. While uploading, the cross cancels. When done, 'Upload another' resets; when it fails, Retry resends.
Motion
Progress follows the transfer frame by frame; dragging lifts the cloud 4px; the tick pops. Reduced motion keeps the progress but drops the entrances and lifts.
Accessibility
Real buttons; the hidden input is out of the tab order. Progress is a progressbar with its value; the cancel cross is labelled with the file name; errors are text, not just colour; progress is announced in quarters.
Responsive
The zone fills its container up to 28rem.
On touch
Tapping opens the system file or photo picker; drag and drop is an extra, not a requirement.

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