import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';

/// UnionFlow Mobile App - Typographie Globale
/// Roboto (Google Fonts) — cohérence cross-platform
class AppTypography {
  static const String _fontFamily = 'Roboto';

  // --- Display / Titres principaux (Roboto via GoogleFonts) ---

  static TextStyle get displayLarge => GoogleFonts.roboto(
        fontSize: 32.0,
        fontWeight: FontWeight.w700,
        letterSpacing: -0.5,
        height: 1.2,
      );

  static TextStyle get displayMedium => GoogleFonts.roboto(
        fontSize: 28.0,
        fontWeight: FontWeight.w700,
        letterSpacing: -0.25,
        height: 1.25,
      );

  static TextStyle get displaySmall => GoogleFonts.roboto(
        fontSize: 24.0,
        fontWeight: FontWeight.w600,
        letterSpacing: 0,
        height: 1.3,
      );

  // --- Titres de sections (Inter SemiBold) ---

  static const TextStyle headerLarge = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 22.0,
    fontWeight: FontWeight.w700,
    letterSpacing: -0.2,
    height: 1.27,
  );

  /// Alias historique — conservé pour compatibilité
  static const TextStyle headerSmall = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 18.0,
    fontWeight: FontWeight.w700,
    letterSpacing: -0.2,
    height: 1.3,
  );

  static const TextStyle titleMedium = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 16.0,
    fontWeight: FontWeight.w600,
    letterSpacing: 0.1,
    height: 1.5,
  );

  static const TextStyle titleSmall = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 14.0,
    fontWeight: FontWeight.w600,
    letterSpacing: 0.1,
    height: 1.43,
  );

  // --- Corps de texte ---

  static const TextStyle bodyLarge = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 16.0,
    fontWeight: FontWeight.w400,
    letterSpacing: 0.3,
    height: 1.5,
  );

  static const TextStyle bodyMedium = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 14.0,
    fontWeight: FontWeight.w400,
    letterSpacing: 0.25,
    height: 1.43,
  );

  /// Alias historique — conservé pour compatibilité
  static const TextStyle bodyTextSmall = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 13.0,
    fontWeight: FontWeight.w400,
    letterSpacing: 0.2,
    height: 1.4,
  );

  // --- Actions et boutons ---

  static const TextStyle actionText = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 15.0,
    fontWeight: FontWeight.w600,
    letterSpacing: 0.1,
  );

  static const TextStyle buttonLabel = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 16.0,
    fontWeight: FontWeight.w700,
    letterSpacing: 0.1,
  );

  // --- Sous-titres et labels ---

  /// Alias historique — conservé pour compatibilité
  static const TextStyle subtitleSmall = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 12.0,
    fontWeight: FontWeight.w400,
    letterSpacing: 0.2,
    height: 1.4,
  );

  static const TextStyle labelMedium = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 12.0,
    fontWeight: FontWeight.w500,
    letterSpacing: 0.4,
    height: 1.33,
  );

  // --- Badges, métriques denses ---

  /// Alias historique — conservé pour compatibilité
  static const TextStyle badgeText = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 11.0,
    fontWeight: FontWeight.w500,
    letterSpacing: 0.3,
  );

  static const TextStyle caption = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 11.0,
    fontWeight: FontWeight.w400,
    letterSpacing: 0.4,
    height: 1.45,
  );

  // --- Navigation ---

  static const TextStyle navLabel = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 11.0,
    fontWeight: FontWeight.w500,
    letterSpacing: 0.3,
  );

  static const TextStyle navLabelSelected = TextStyle(
    fontFamily: _fontFamily,
    fontSize: 11.0,
    fontWeight: FontWeight.w700,
    letterSpacing: 0.3,
  );
}