🎉 ShotScreen v1.0 - Initial Release

🚀 First official release of ShotScreen with complete feature set:

✨ Core Features:
- Advanced screenshot capture system
- Multi-monitor support
- Professional UI/UX design
- Automated update system with Sparkle
- Apple notarized & code signed

🛠 Technical Excellence:
- Native Swift macOS application
- Professional build & deployment pipeline
- Comprehensive error handling
- Memory optimized performance

📦 Distribution Ready:
- Professional DMG packaging
- Apple notarization complete
- No security warnings for users
- Ready for public distribution

This is the foundation release that establishes ShotScreen as a premium screenshot tool for macOS.

ShotScreen/Sources/ThemeManager.swift

@@ -0,0 +1,176 @@
+import AppKit
+import SwiftUI
+
+// MARK: - Centralized Theme Manager
+class ThemeManager {
+    static let shared = ThemeManager()
+    
+    private init() {}
+    
+    // MARK: - System-Aware Colors (automatic light/dark adaptation)
+    
+    /// Background colors for containers (GLASS EFFECT zoals stash)
+    var containerBackground: NSColor {
+        // NIEUW: Glass effect achtergrond zoals stash window
+        // Gebruik transparante achtergrond zodat visual effect view erdoor kan
+        return NSColor.clear
+    }
+    
+    /// Glass effect background for visual effect views
+    var glassEffectMaterial: NSVisualEffectView.Material {
+        return .hudWindow // Exact hetzelfde als stash window
+    }
+    
+    /// Glass effect blending mode
+    var glassEffectBlending: NSVisualEffectView.BlendingMode {
+        return .behindWindow // Exact hetzelfde als stash window
+    }
+    
+    /// Glass effect alpha
+    var glassEffectAlpha: CGFloat {
+        return 0.95 // Exact hetzelfde als stash window
+    }
+    
+    /// Background colors for secondary containers
+    var secondaryContainerBackground: NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return NSColor(white: 0.42, alpha: 0.90) // Dark mode: iets lichter
+        } else {
+            return NSColor(white: 0.98, alpha: 0.90) // Light mode: bijna wit
+        }
+    }
+    
+    /// Button and icon colors (adaptive)
+    var buttonTintColor: NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return NSColor(white: 0.95, alpha: 1.0) // Dark mode: wit
+        } else {
+            return NSColor(white: 0.25, alpha: 1.0) // Light mode: donkergrijs
+        }
+    }
+    
+    /// Text colors (adaptive)
+    var primaryTextColor: NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return NSColor.white // Dark mode: wit
+        } else {
+            return NSColor.black // Light mode: zwart
+        }
+    }
+    
+    var secondaryTextColor: NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return NSColor(white: 0.7, alpha: 1.0) // Dark mode: grijs
+        } else {
+            return NSColor(white: 0.4, alpha: 1.0) // Light mode: donkergrijs
+        }
+    }
+    
+    /// Filename label text color (adaptive with opacity)
+    var filenameLabelTextColor: NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return NSColor(white: 0.7, alpha: 1.0) // Dark mode: lichtgrijs
+        } else {
+            return NSColor(white: 0.1, alpha: 1.0) // Light mode: veel donkerder voor betere zichtbaarheid
+        }
+    }
+    
+    /// Grid cell icon background (adaptive)
+    var gridCellIconBackground: NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return NSColor.white.withAlphaComponent(0.25) // Dark mode
+        } else {
+            return NSColor.black.withAlphaComponent(0.25) // Light mode
+        }
+    }
+    
+    /// Grid cell text color with hover effect
+    func gridCellTextColor(isHovered: Bool) -> NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return isHovered ? NSColor.white : NSColor.white.withAlphaComponent(0.1)
+        } else {
+            return isHovered ? NSColor.black : NSColor.black.withAlphaComponent(0.1)
+        }
+    }
+    
+    // MARK: - Shadow Configuration (adaptive)
+    var shadowColor: NSColor {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return NSColor.black // Dark mode: black shadows
+        } else {
+            return NSColor.black.withAlphaComponent(0.3) // Light mode: lighter shadows
+        }
+    }
+    
+    var shadowOpacity: Float {
+        if NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua {
+            return 0.50 // Dark mode: stronger shadows
+        } else {
+            return 0.25 // Light mode: subtle shadows
+        }
+    }
+    
+    // MARK: - Utility Methods
+    
+    /// Check if currently in dark mode
+    var isDarkMode: Bool {
+        return NSApp.effectiveAppearance.name == NSAppearance.Name.darkAqua
+    }
+    
+    /// Debug function to print current theme info
+    func printCurrentTheme() {
+        let mode = isDarkMode ? "DARK" : "LIGHT"
+        print("🎨 THEME DEBUG: Current mode = \(mode)")
+        print("🎨 THEME DEBUG: Container background = GLASS EFFECT (\(glassEffectMaterial.rawValue))")
+        print("🎨 THEME DEBUG: Glass effect alpha = \(glassEffectAlpha)")
+        print("🎨 THEME DEBUG: Button tint = \(buttonTintColor)")
+        print("🎨 THEME DEBUG: Primary text = \(primaryTextColor)")
+        print("🎨 THEME DEBUG: Shadow opacity = \(shadowOpacity)")
+    }
+    
+    /// Get hover color for buttons
+    var buttonHoverColor: NSColor {
+        if isDarkMode {
+            return NSColor.white
+        } else {
+            return NSColor.black
+        }
+    }
+    
+    /// Get original button color (for hover restoration)
+    var buttonOriginalColor: NSColor {
+        return buttonTintColor
+    }
+    
+    // MARK: - Notification for Theme Changes
+    func observeThemeChanges(callback: @escaping () -> Void) {
+        // Observer voor system appearance changes
+        DistributedNotificationCenter.default.addObserver(
+            forName: NSNotification.Name("AppleInterfaceThemeChangedNotification"),
+            object: nil,
+            queue: .main
+        ) { _ in
+            print("🎨 THEME: System theme changed - notifying observers")
+            callback()
+        }
+    }
+}
+
+// MARK: - SwiftUI Color Extensions
+extension Color {
+    static var adaptiveContainerBackground: Color {
+        Color(ThemeManager.shared.containerBackground)
+    }
+    
+    static var adaptiveSecondaryBackground: Color {
+        Color(ThemeManager.shared.secondaryContainerBackground)
+    }
+    
+    static var adaptivePrimaryText: Color {
+        Color(ThemeManager.shared.primaryTextColor)
+    }
+    
+    static var adaptiveSecondaryText: Color {
+        Color(ThemeManager.shared.secondaryTextColor)
+    }
+}