import SwiftUI
#if canImport(UIKit)
import UIKit
#elseif canImport(AppKit)
import AppKit
#endif

// 品牌主色单一真源（强约束③，与 web 主 accent 对齐）：浅色 #644AC9 / 深色 #9580FF。放在 Shared，使主
// app、控件 / 小组件扩展共用同一定义（此前仅在主 app 的 RootView 内，扩展无法引用）。
extension Color
{
    #if os(iOS)
    static let cdropAccent = Color(uiColor: UIColor
    { trait in
        trait.userInterfaceStyle == .dark
            ? UIColor(red: 0.584, green: 0.502, blue: 1.0, alpha: 1)
            : UIColor(red: 0.392, green: 0.290, blue: 0.788, alpha: 1)
    })
    #else
    static let cdropAccent = Color(nsColor: NSColor(name: nil, dynamicProvider:
    { appearance in
        appearance.bestMatch(from: [ .aqua, .darkAqua ]) == .darkAqua
            ? NSColor(red: 0.584, green: 0.502, blue: 1.0, alpha: 1)
            : NSColor(red: 0.392, green: 0.290, blue: 0.788, alpha: 1)
    }))
    #endif

    // 品牌琥珀色（字标里「Drop」用色，对齐 web 品牌资产）：浅色 #DB9410 / 深色 #F8C637。
    #if os(iOS)
    static let cdropAmber = Color(uiColor: UIColor
    { trait in
        trait.userInterfaceStyle == .dark
            ? UIColor(red: 0.973, green: 0.776, blue: 0.216, alpha: 1)
            : UIColor(red: 0.859, green: 0.580, blue: 0.063, alpha: 1)
    })
    #else
    static let cdropAmber = Color(nsColor: NSColor(name: nil, dynamicProvider:
    { appearance in
        appearance.bestMatch(from: [ .aqua, .darkAqua ]) == .darkAqua
            ? NSColor(red: 0.973, green: 0.776, blue: 0.216, alpha: 1)
            : NSColor(red: 0.859, green: 0.580, blue: 0.063, alpha: 1)
    }))
    #endif
}