orca/docs/STYLEGUIDE.md

Orca UI Style Guide

UI rules for Orca. Token values live in src/renderer/src/assets/main.css (canonical); this file documents roles and rules, not values.

The identity is monochrome and quiet: neutral grays carry the chrome, color is reserved for state (selection ring, destructive, git decorations). Orca mostly hosts other tools (Monaco, xterm, Markdown previews), so its own UI should recede and frame. When in doubt:

• Reach for muted/accent/border before color.
• Reach for CSS variables before hardcoded hex.
• Match the nearest shadcn primitive before writing custom CSS.

Deep dives

Read only when the task touches the topic:

• styleguide/color.md: full role table, git decorations, list-row states. Read when picking a surface/foreground pair or styling rows.
• styleguide/components.md: button, primitive-picker, tooltip, icon, shortcut-chip, form, and scrollbar specs. Read when touching one.
• styleguide/native-chat.md: chat type scale and colours. Read before any change under components/native-chat/.
• styleguide/ux-rules.md: rationale for the UX rules below. Read when a rule's application is unclear.
• styleguide/ux-review-rubric.md: screen review rubric. Read when reviewing or polishing a screen, screenshot, or prototype.

Tokens

• Colors, @theme inline bindings, typography, scrollbars, and titlebar chrome live in main.css; primitives in src/renderer/src/components/ui/.
• Never hardcode a hex value in component code if a variable already covers it. A new token goes in main.css in both :root and .dark, is exposed in @theme inline, then used.
• Need a tint? color-mix(in srgb, var(--token) N%, var(--background)) against an existing token, never a new hex, so light/dark parity stays automatic.

Color

Tokens pair a surface with a foreground that meets contrast on it; always use them together. Role summary (full table in color.md):

• background = app canvas; card = panels lifted off it; popover = floating menus; input = form field background only.
• primary = the single affirmative action in a flow, never decoration, hover, or secondary actions. secondary = lower-emphasis sibling.
• muted = de-emphasized text, captions, placeholders, disabled chrome; not body copy.
• accent = hover/active backgrounds for ghost buttons and list rows; not solid filled buttons (use secondary).
• destructive = delete/discard/irreversible actions and error states; never Cancel.
• border = all hairlines; ring = focus-visible outlines and selection halos, not persistent decoration.
• sidebar* only inside the worktree sidebar; editor-surface for Monaco/markdown editor panes, not app chrome.
• --git-decoration-* only for git status, never other state.
• List rows: idle transparent; hover bg-accent (bg-sidebar-accent in the sidebar); cmdk keyboard selection must not rely on flat bg-accent on light popovers/dialogs — use the .jump-palette-item[data-selected='true'] recipe in main.css; the persistent current row is bg-accent plus data-current="true". Never invent a "selected" color.

Typography

• Sans is Geist, never Inter or system sans. Mono is var(--font-mono) for paths, code, terminal-adjacent UI, and anything literal.
• Body letter-spacing is set globally on body; don't override per component.
• Use Tailwind's scale. Common: 14px body/default buttons, 13px sidebar items and dense rows, 12px sub-text and paths, 11px uppercase meta/captions.
• Use text-2xs (11px) and text-3xs (10px), not text-[11px] / text-[10px].
• Category labels: 11px, font-semibold, uppercase, tracking-wider (0.05em). Settings content uses sentence case without tracking: 14px row labels, text-settings-detail (12.5px) help, and text-settings-heading (15px) semibold section headings. Settings form rows use about 9px vertical padding (44px minimum), selects are 28px, and the centered content column is at most 720px with at least 32px side gutters. These density rules are scoped to .settings-view-shell; shared primitives retain their defaults elsewhere.
• Native chat has its own lint-enforced scale and colours: see native-chat.md.

Radius and elevation

• Radii derive from --radius in main.css. Buttons and inputs use rounded-md, Card uses rounded-xl, badges use rounded-full. Match the existing primitive's radius; don't introduce a new one.
• Three elevation levels, no fourth: (1) border hairline, the default for almost everything; (2) shadow-xs + single-token border for outline buttons and embedded cards; (3) shadow-floating, reserved for popovers and popups that escape the editor surface. Needing more than floating usually means you want the focus ring.

Components

• Use the primitives in src/renderer/src/components/ui/ before anything custom. Never reimplement headless behavior; extend the existing wrapper. Keep data-slot on roots, merge with cn() passing caller className last, and use CVA for multiple variants (conventions).
• Buttons: default = the single affirmative action; secondary next to it; outline for toolbar/standalone; ghost for icon buttons and row triggers; link inline in prose; destructive never for Cancel. Match the size to the row height.
• Picking a primitive: Tooltip (icon labels), HoverCard (rich preview), DropdownMenu (click menu), ContextMenu (right-click), Popover (click-revealed form/picker), Dialog (blocking decision only), Sheet (edge panel), Select (known list), Command in Popover (search), repo-multi-combobox pattern (searchable multi-select), sonner (transient confirmation), inline text + Badge (persistent status). Don't style one primitive to act like another (table).
• Every dialog asking the user to trust, approve, run, or remove code (including plugin provenance/approval) uses DialogContent surface="security" so plugin themes can't restyle it; add scrollable when the whole dialog scrolls. Trust decisions outside a dialog (agent approval card, certificate override) go in SecuritySurface.
• Above a modal, older toasts sit behind its backdrop, dimmed and inert. Pressing one, or a new toast arriving, brings toasts forward; then close and actions work and the modal stays open with focus and unsaved input intact. Running a navigating action from there is an escape hatch and is tracked (toast_action_over_modal).
• Tooltips only name controls: never for visibly labeled controls, interactive content, or critical messages (those go inline). Use the app-root TooltipProvider, <TooltipTrigger asChild>, and side="top" sideOffset={4} by default (spec).
• Icons: lucide-react only, default size-4, default stroke, color inherited from text. Loading is <Loader2 className="size-4 animate-spin" /> (spec).
• Shortcut chips: always <ShortcutKeyCombo /> (or <DropdownMenuShortcut> in menus), never a one-off <kbd> or keys baked into label strings. The label MUST match the platform's actual binding. Never on Cancel, Dismiss, or link actions (spec).
• Forms: follow settings/SettingsFormControls.tsx; errors via aria-invalid, never a hand-painted ring (spec).
• Scrollbars: use .scrollbar-sleek, .scrollbar-editor, or .worktree-sidebar-scrollbar (sidebar only); don't write a fourth (spec).

UX rules

These apply to every UI change. Rationale: ux-rules.md. Reviewing a screen: ux-review-rubric.md.

• UI copy must not overclaim. Never imply the app took an action, made a decision, or observed a fact without real state or result data. Use neutral process language while pending; reserve result verbs ("skipped", "protected", "found", "verified", "deleted") for actual results. Copy is typo-free, concise, specific, and free of filler ("please", "simply", "just").
• Match in-flight feedback to duration: 0–100 ms none; 100 ms–1 s disabled only; 1–3 s disabled + spinner or label swap; 3 s+ or multi-step stage labels/progress. Pre-reserve space for label/icon swaps (width, not min-width). Bind disabled immediately; defer visible loading ~200 ms so local stays clean and SSH gets feedback.
• Match siblings: adjacent components in the same flow share icons, shortcut conventions, and submit semantics. Diverge only for a real role difference, or fix both. With no sibling, match the surrounding chrome.
• Keep the back-out path quiet: Cancel, Dismiss, Close, and Discard are not destructive: ghost, no color, no shortcut chip, no animated affordance. Esc still works.
• Primary action obvious; common workflows in 1–2 actions; default focus on the likely field or primary action; Enter submits it, Esc backs out.
• Respect reduced motion per element: motion-reduce: for movement, still-but-working states for spinners (LoadingSpinner), and motionSafeScrollBehavior() for scripted scrolls.
• Missing data shows a direct action to acquire it. Toasts for transient results; inline persistent errors when the user must read, retry, copy, or act.

Cross-platform

Every UI change must hold up on macOS, Linux, and Windows, in light and dark mode.

• Never hardcode e.metaKey: choose metaKey on Mac and ctrlKey elsewhere via navigator.userAgent.includes('Mac'). Menu accelerators use CmdOrCtrl.
• Labels show ⌘ / ⇧ on Mac and Ctrl+ / Shift+ elsewhere, matching the actual binding.
• On Mac, keep hit targets out of the traffic-light gutter (titlebar-traffic-light-pad).
• Loading, focus, and animation must hold up under 50–200 ms of SSH latency; verify under simulated latency or real SSH, not local only.

When this guide is silent

If you have a UI question this doc doesn't answer:

1. Look at adjacent code in src/renderer/src/components/ for the closest sibling, and follow its lead.
2. Check src/renderer/src/components/ui/ for a primitive that already encodes the pattern.
3. If it's a token question, main.css is canonical — use what's there, or add a new one in both light and dark.
4. If none of those resolve it, ask the user before inventing.