git:20260927.43a351c to git:20261012.0cd6b32

- description: "Use when designing an iOS or macOS screen or flow — deliverable is a device/window-framed HTML mockup and handoff spec, never SwiftUI code."

- when-to-use: "Designing an iOS or macOS screen or flow — the deliverable is a device/window-framed HTML mockup and a handoff spec for swift-expert or an Apple-platform developer to implement, not working SwiftUI."

- keywords: ios, macos, hig, dynamic-type, liquid-glass, swiftui, handoff, mockup, desktop-tinting

- Produces iOS and macOS mockups and developer handoff specs: mapping design tokens to the Dynamic Type scale (iOS) or macOS's fixed text-size variants, semantic colors, device/window viewports, Liquid Glass materials, and macOS-specific conventions (system window chrome, desktop tinting, pointer states).

- The deliverable is a device-framed (iOS) or window-framed (macOS) HTML mockup at exact viewport dimensions plus a SwiftUI-ready handoff spec (named tokens, text styles, semantic colors, sizing, states, spacing). This skill never writes SwiftUI code — implementation is left to `swift-expert` or an Apple-platform developer.

- ## Design iOS/macOS — Mockup and Handoff, Not Code

- After `design-system` tokens exist. This skill never writes SwiftUI — it produces a

- static HTML mockup at exact device/window dimensions plus a spec that `swift-expert` or

- an Apple-platform developer implements.

- - The screen/flow to mock up and the target platform: iPhone / iPad (iOS) or a resizable

- window (macOS).

-

- ### Steps — iOS

-

- 1. **Map tokens to iOS roles.** Typography → Dynamic Type text styles, anchored at Body

- 17pt down to Caption 2 11pt (never fixed point sizes) — see `references/dynamic-type.md`.

- Colors → semantic color roles (never raw RGB/hex) — see `references/semantic-colors.md`.

- 2. **Pick the device viewport(s)** from `references/viewports.md` — mock up in exact

- points at the chosen scale factor.

- 3. **Build the HTML mockup**: a device-frame `<div>` at the exact viewport dimensions,

- `viewport-fit=cover` meta tag, `env(safe-area-inset-*)` for notch/Dynamic Island/home

- indicator spacing. See `references/mockup.md`.

- 4. **Apply Liquid Glass where it fits** — a floating layer of controls *above* regular

- content, not a content background. Two variants: **regular** (content-aware, the

- default for controls) and **clear** (more transparent — dim the content beneath it

- ~35% when clear sits over light content, so controls stay legible). Plus control

- morphing, concentricity between nested shapes, layered icon treatment. Source:

- developer.apple.com/design/human-interface-guidelines/materials (Liquid Glass, introduced iOS 26, current in iOS 27).

- See `references/liquid-glass.md` — do not invent numeric corner-radius values; none are

- published.

- 5. **Verify touch targets and contrast**: 44×44pt minimum touch target (see

- `references/touch-targets.md`); **4.5:1 minimum contrast in Dark Mode** for body text

- (WCAG AA, HIG-endorsed) — check both light and dark against

- `references/semantic-colors.md` roles, not a single-mode check.

- 6. **Sidebar navigation ≤ 2 levels deep.** If the flow needs a 3rd level, restructure

- (tabs, push navigation, or a secondary sidebar) rather than nesting a 3rd disclosure

- tier — deeper sidebars are a documented HIG anti-pattern for iPadOS/macOS sidebars.

- Source: developer.apple.com/design/human-interface-guidelines/layout.

- 7. **Write the handoff spec** per `references/handoff-swiftui.md`: named tokens only

- (never raw values), Dynamic Type text styles (never fixed sizes), semantic colors,

- explicit sizing behavior (fixed/hug/fill) per element, all interaction states

- (disabled/pressed/focused), spacing in pt.

- ### Steps — macOS

- 1. **Map tokens to macOS text sizes.** macOS uses its own fixed scale, distinct from iOS

- Dynamic Type — confirmed anchors: **Large Title 26pt** down to **body ~13pt**, floor

- **Caption 2 ~10pt**. Source: developer.apple.com/design/human-interface-guidelines/typography.

- **Gap — do not invent**: the full intermediate scale (Title 1–3, Headline, Subhead,

- Footnote point values) is not confirmed in this pass; reconfirm on the HIG typography

- page or Xcode's SF font catalog before using an intermediate size verbatim.

- 2. **No Dynamic Type on macOS** — the platform ships fixed size *variants per context*

- (e.g. control sizes: regular/small/mini) instead of a user-adjustable type scale. Pick

- the variant that matches the control's context, don't apply an iOS Dynamic Type style.

- 3. **Never draw a custom window chrome.** Title bar, traffic lights, toolbar, and sidebar

- are system-drawn; the mockup should frame content inside a standard macOS window shape,

- not invent custom chrome. Source: developer.apple.com/design/human-interface-guidelines/windows.

- 4. **Desktop tinting**: background materials pick up a subtle tint from the desktop

- picture/wallpaper behind the window — reflect this as a soft, low-opacity tint layer in

- the mockup, not a flat opaque background. Source:

- developer.apple.com/design/human-interface-guidelines/materials.

- 5. **Pointer feedback, not touch feedback**: hover, highlight, and lift states on

- interactive elements (buttons, list rows) — macOS is pointer-driven, so every hoverable

- control needs a hover state in the mockup and handoff spec, unlike iOS/iPadOS touch-only

- flows. Source: developer.apple.com/design/human-interface-guidelines/pointing-devices.

- 6. **Window sizing is a mockup convenience, not a spec.** Unlike iOS device viewports,

- macOS windows are user-resizable — pick a reasonable default canvas (e.g. common

- productivity-app widths) for the mockup, but do not present it as an official fixed

- dimension; state that explicitly in the handoff spec.

- 7. **Write the handoff spec** per `references/handoff-swiftui.md`, adapted: macOS text

- sizes instead of Dynamic Type styles, hover/pressed/focused states (pointer, not touch),

- otherwise same named-token discipline.

- - Screenshot/preview tooling unavailable → describe the mockup in the handoff spec with

- exact pt values instead of blocking on a visual.

- - A fact needed isn't in the references below → mark it "to reconfirm on

- developer.apple.com" in the output; never invent a number. This applies in particular to

- **iOS/macOS spacing and corner-radius grids — neither is published as an official numeric

- scale**; do not invent an 8pt-style grid for Apple platforms, point instead to Xcode's

- Design Resources / SF Symbols catalog as the source of truth to reconfirm against.

- - Device-framed (iOS) or window-framed (macOS) HTML mockup at exact viewport

- points/reasonable default canvas.

- - `handoff.md` (or equivalent) with named tokens, text styles, semantic colors, sizing,

- states, spacing — ready for `swift-expert`.

- ### Next → `design-review` (mockup-scoped: screenshot the mockup, verify contrast, no

- full site audit loop).

- | `references/dynamic-type.md` | **Canonical iOS Dynamic Type scale (Large) — verified iosfontsizes.com** |

- | `references/semantic-colors.md` | **Canonical semantic color roles — verified WWDC19, still current** |

- | `references/viewports.md` | **Canonical iOS device viewports in points — verified ios-resolution.com** |

- | `references/liquid-glass.md` | **Canonical Liquid Glass facts — verified developer.apple.com, iOS 26–27** |

- | `references/touch-targets.md` | 44×44pt default / 28×28pt minimum control size — verified HIG Accessibility |

-

- **Gap (not covered by any reference file, inlined above from HIG, flagged for a future

- `references/macos.md`)**: macOS type-size anchors, no-Dynamic-Type rule, system window

- chrome, desktop tinting, pointer states. Out of this pass's exclusive scope to create.