import 'package:flutter/material.dart';

/// HandwerkPro: Dark UI mit Lila-Header und Türkis-Akzenten (Mockup).
class AppTheme {
  AppTheme._();

  static const Color background = Color(0xFF121212);
  static const Color card = Color(0xFF1E1E1E);
  static const Color headerPurple = Color(0xFF4A148C);
  static const Color headerPurpleLight = Color(0xFF6A1B9A);
  static const Color accentCyan = Color(0xFF00E5FF);
  static const Color statusOffen = Color(0xFF2196F3);
  static const Color statusFertig = Color(0xFF4CAF50);
  static const Color statusGeplant = Color(0xFFFF9800);

  static ThemeData dark() {
    final base = ThemeData(
      useMaterial3: true,
      brightness: Brightness.dark,
      scaffoldBackgroundColor: background,
    );
    return base.copyWith(
      colorScheme: ColorScheme.dark(
        surface: background,
        primary: accentCyan,
        onPrimary: Colors.black,
        secondary: headerPurpleLight,
        onSecondary: Colors.white,
        tertiary: accentCyan,
        surfaceContainerHighest: card,
        onSurface: Colors.white,
        onSurfaceVariant: Color(0xFFB0B0B0),
        outline: Color(0xFF404040),
      ),
      appBarTheme: const AppBarTheme(
        backgroundColor: headerPurple,
        foregroundColor: Colors.white,
        elevation: 0,
        centerTitle: false,
        scrolledUnderElevation: 0,
      ),
      cardTheme: CardThemeData(
        color: card,
        elevation: 0,
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
        margin: EdgeInsets.zero,
      ),
      inputDecorationTheme: InputDecorationTheme(
        filled: true,
        fillColor: card,
        hintStyle: const TextStyle(color: Color(0xFF888888)),
        labelStyle: const TextStyle(color: Color(0xFFAAAAAA)),
        border: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: const BorderSide(color: Color(0xFF404040)),
        ),
        enabledBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: const BorderSide(color: Color(0xFF404040)),
        ),
        focusedBorder: OutlineInputBorder(
          borderRadius: BorderRadius.circular(12),
          borderSide: const BorderSide(color: accentCyan, width: 1.5),
        ),
      ),
      filledButtonTheme: FilledButtonThemeData(
        style: FilledButton.styleFrom(
          backgroundColor: accentCyan,
          foregroundColor: Colors.black,
          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
          shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(14)),
        ),
      ),
      floatingActionButtonTheme: const FloatingActionButtonThemeData(
        backgroundColor: accentCyan,
        foregroundColor: Colors.black,
        elevation: 4,
      ),
      navigationBarTheme: NavigationBarThemeData(
        backgroundColor: card,
        indicatorColor: accentCyan.withValues(alpha: 0.25),
        labelTextStyle: WidgetStateProperty.resolveWith((s) {
          final sel = s.contains(WidgetState.selected);
          return TextStyle(
            fontSize: 12,
            fontWeight: sel ? FontWeight.w600 : FontWeight.w400,
            color: sel ? accentCyan : const Color(0xFF9E9E9E),
          );
        }),
        iconTheme: WidgetStateProperty.resolveWith((s) {
          final sel = s.contains(WidgetState.selected);
          return IconThemeData(color: sel ? accentCyan : const Color(0xFF9E9E9E));
        }),
      ),
      tabBarTheme: TabBarThemeData(
        labelColor: accentCyan,
        unselectedLabelColor: const Color(0xFF9E9E9E),
        indicatorColor: accentCyan,
      ),
    );
  }
}