Design

Creating a uniform design in this app

Prefer to place standard fonts, sizes, colors, stack spacing, padding, rounding, animation timings, and more into a shared enum of constants, so they can be used by all views. This allows the app’s design to feel uniform and consistent, and be adjusted easily.

Requirements for flexible, accessible design

• Never use UIScreen.main.bounds to read available space; prefer alternatives such as containerRelativeFrame(), or visualEffect() as appropriate, or (if there is no alternative) GeometryReader.
• Prefer to avoid fixed frames for views unless content can fit neatly inside; this can cause problems across different device sizes, different Dynamic Type settings, and more. Giving frames some flexibility is usually preferred.
• Apple’s minimum acceptable tap area for interactions on iOS is 44x44. Ensure this is strictly enforced.

Standard system styling

• Strongly prefer to use ContentUnavailableView when data is missing or empty, rather than designing something custom.
• When using searchable(), you can show empty results using ContentUnavailableView.search and it will include the search term they used automatically – there’s no need to use ContentUnavailableView.search(text: searchText) or similar.
• If you need an icon and some text placed horizontally side by side, prefer Label over HStack.
• Prefer system hierarchical styles (e.g. secondary/tertiary) over manual opacity when possible, so the system can adapt to the correct context automatically.
• When using Form, wrap controls such as Slider in LabeledContent so the title and control are laid out correctly.
• When using RoundedRectangle, the default rounding style is .continuous – there is no need to specify it explicitly.

Ensuring designs work for everyone

• Use bold() instead of fontWeight(.bold), because using bold() allows the system to choose the correct weight for the current context.
• Only use fontWeight() for weights other than bold when there's an important reason - scattering around fontWeight(.medium) or fontWeight(.semibold) is counterproductive.
• Avoid hard-coded values for padding and stack spacing unless specifically requested.
• Avoid UIKit colors (UIColor) in SwiftUI code; use SwiftUI Color or asset catalog colors.
• The font size .caption2 is extremely small, and is generally best avoided. Even the font size .caption is on the small side, and should be used carefully.