Mixed Inspector

Written for the variant you picked above: Dark

Build a bulk editor for an issue tracker: a 64rem card (16px radius) split into a list on the left and a 21rem inspector on the right (a slightly raised surface). The list: a 52px bar with a group checkbox (tri-state: a dash when some are selected), '5 selected · 2 hidden by filter' (the hidden part in amber, shown only when selected rows are filtered out) and a 'Filter' search field. Rows are 40px: checkbox, a mono id ('VT-118'), the title, and three quiet cells — status with a coloured dot (Backlog grey, Todo light, In progress amber, Done green), priority with a coloured square (Urgent red, High orange, Medium blue, Low grey) and the assignee. Selected rows tint blue; rows with unsaved changes get a small amber dot. Click toggles a row, Shift-click selects a range; the list is a multi-select listbox: ↑/↓ move, X or Space toggles, Shift+↑/↓ extends, ⌘A selects everything shown, Esc clears. The inspector, 'Editing 5 issues': for Status, Priority and Assignee, a row with the field name, a thin 4px stacked bar of the selection's spread in each value's colour, and a 'Set all 5 ▾' menu; under it, one chip per distinct value with its count — 'In progress ×2', 'Todo ×2', 'Done ×1'. Never the word 'Mixed'. Clicking a chip opens a menu: 'Select only these 2' (narrows the selection to exactly those records) and 'Change these 2 to' with every other value. Labels: one row per label — tri-state checkbox, name, a quorum bar filling to the share that carries it, and '3/5'. Clicking cycles all → none → back to exactly the original mix, so a partial state is never destroyed by accident; while it differs, the old count shows struck through. Nothing saves on its own. A sticky bar at the inspector's foot says '4 issues will change' over 'Status → Done on 2 · +perf on 3 · −bug on 1', with Discard and an ink Apply. Applying takes a moment (spinner), then saves what it can: an archived issue fails ('Archived — read-only') and one issue conflicts ('Mei edited this a moment ago'). Failed issues stay selected and a red-edged tray lists each with its reason, offering Retry (the conflict now goes through) and 'Leave out archived'. An onApply callback receives only the records that really saved, each with its patch. Selected variant — Dark (dark): Palette for this theme (Dark): --mxin-a0 #b48cf2; --mxin-a1 #6cc0b0; --mxin-a2 #e08560; --mxin-a3 #7cb4f0; --mxin-accent #7cb4f0; --mxin-bad #f0645a; --mxin-card #151515; --mxin-faint #5c5c5c; --mxin-focus #8ab4f8; --mxin-go #ededed; --mxin-go-ink #111111; --mxin-hover rgb(255 255 255 / 0.05); --mxin-ink #ececec; --mxin-line #2a2a2a; --mxin-line-soft rgb(255 255 255 / 0.06); --mxin-muted #8c8c8c; --mxin-p0 #f0645a; --mxin-p1 #f0a35a; --mxin-p2 #7cb4f0; --mxin-p3 #8e8e8e; --mxin-pop #1d1d1d; --mxin-raise #1b1b1b; --mxin-sel rgb(124 180 240 / 0.1); --mxin-shadow 0 16px 40px -12px rgb(0 0 0 / 0.65), 0 0 0 1px rgb(0 0 0 / 0.4); --mxin-staged #e6c26b; --mxin-v0 #8e8e8e; --mxin-v1 #c9c9c9; --mxin-v2 #e6c26b; --mxin-v3 #8fd18a. 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 "dark". 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: Select issues by clicking, Shift-clicking or from the keyboard (arrows, X or Space, Shift+arrows, ⌘/Ctrl+A, Esc). In the inspector, click a value chip to select only those issues or change just those; 'Set all' changes every selected issue; click a label to cycle all → none → original. Apply or Discard the staged changes; Retry any that fail. Motion: Spread bars and quorum bars ease to their new proportions; menus drop in; the staged bar rises in. On narrow screens the inspector slides up as a sheet. Reduced motion removes all of it. Accessibility: The list is a listbox with aria-multiselectable and aria-activedescendant; the group checkbox and label checkboxes use aria-checked 'mixed'; value chips announce '“Todo” on 2 of 5' and open menus that take focus, move with arrows and return focus on Escape; staged and failed states are labelled groups; every change is announced politely. Responsive behavior: Below 860px of its own width the rows keep only the status cell; below 640px the inspector becomes a full-height sheet opened by an 'Edit 5 selected' button at the foot of the list, with larger chips and full-width Apply and Discard. Touch: Rows, chips and labels are tap targets (48px rows on narrow screens); range selection is also available with the group checkbox and 'Select only these'. 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

Select issues by clicking, Shift-clicking or from the keyboard (arrows, X or Space, Shift+arrows, ⌘/Ctrl+A, Esc). In the inspector, click a value chip to select only those issues or change just those; 'Set all' changes every selected issue; click a label to cycle all → none → original. Apply or Discard the staged changes; Retry any that fail.

Motion

Spread bars and quorum bars ease to their new proportions; menus drop in; the staged bar rises in. On narrow screens the inspector slides up as a sheet. Reduced motion removes all of it.

Accessibility

The list is a listbox with aria-multiselectable and aria-activedescendant; the group checkbox and label checkboxes use aria-checked 'mixed'; value chips announce '“Todo” on 2 of 5' and open menus that take focus, move with arrows and return focus on Escape; staged and failed states are labelled groups; every change is announced politely.

Responsive

Below 860px of its own width the rows keep only the status cell; below 640px the inspector becomes a full-height sheet opened by an 'Edit 5 selected' button at the foot of the list, with larger chips and full-width Apply and Discard.

On touch

Rows, chips and labels are tap targets (48px rows on narrow screens); range selection is also available with the group checkbox and 'Select only these'.