/// Design tokens extracted from "The Sacred Horizon" Stitch design system.
/// These are the canonical color, typography, spacing, and styling constants.
library;

import 'package:flutter/material.dart';

// ──────────────────────────────────────────────
// COLOR TOKENS — "Masjid Twilight" palette
// ──────────────────────────────────────────────

class SacredColors {
  SacredColors._();

  // Core
  static const Color primary = Color(0xFF88D982);         // Living Green
  static const Color primaryContainer = Color(0xFF004F11);
  static const Color onPrimaryContainer = Color(0xFF72C36E);

  static const Color secondary = Color(0xFFE9C349);       // Sacred Gold
  static const Color secondaryContainer = Color(0xFFAF8D11);

  static const Color tertiary = Color(0xFFE9C400);
  static const Color tertiaryContainer = Color(0xFFC8A900);

  // Background & Surface hierarchy
  static const Color background = Color(0xFF131313);       // The Void
  static const Color surface = Color(0xFF131313);
  static const Color surfaceDim = Color(0xFF131313);
  static const Color surfaceContainerLowest = Color(0xFF0E0E0E);
  static const Color surfaceContainerLow = Color(0xFF1C1B1B);
  static const Color surfaceContainer = Color(0xFF201F1F);
  static const Color surfaceContainerHigh = Color(0xFF2A2A2A);
  static const Color surfaceContainerHighest = Color(0xFF353534);
  static const Color surfaceBright = Color(0xFF393939);
  static const Color surfaceVariant = Color(0xFF353534);

  // On‑ tokens
  static const Color onSurface = Color(0xFFE5E2E1);
  static const Color onSurfaceVariant = Color(0xFFBFC9C4);
  static const Color onBackground = Color(0xFFE5E2E1);
  static const Color onPrimary = Color(0xFF003909);
  static const Color onSecondary = Color(0xFF3C2F00);

  // Outline
  static const Color outline = Color(0xFF89938F);
  static const Color outlineVariant = Color(0xFF3F4945);

  // Error
  static const Color error = Color(0xFFFFB4AB);
  static const Color errorContainer = Color(0xFF93000A);

  // Inverse
  static const Color inverseSurface = Color(0xFFE5E2E1);
  static const Color inversePrimary = Color(0xFF1B6D24);

  // Special
  static const Color blackScreen = Color(0xFF000000);

  // Convenience: transparent glass for overlays
  static Color get glass70 => surfaceVariant.withValues(alpha: 0.70);
  static Color get glass60 => surfaceVariant.withValues(alpha: 0.60);
  static Color get glass35 => surfaceVariant.withValues(alpha: 0.35);
}

// ──────────────────────────────────────────────
// TYPOGRAPHY
// ──────────────────────────────────────────────

class SacredTypography {
  SacredTypography._();

  static const String headlineFamily = 'Plus Jakarta Sans';
  static const String bodyFamily = 'Manrope';

  // Display — The Clock (heartbeat of the system)
  static TextStyle clockDisplay(double fontSize) => TextStyle(
        fontFamily: headlineFamily,
        fontSize: fontSize,
        fontWeight: FontWeight.w800,
        letterSpacing: -0.02 * fontSize,
        color: SacredColors.onSurface,
        height: 1.0,
      );

  // Headline — Prayer Names
  static TextStyle headline(double fontSize) => TextStyle(
        fontFamily: headlineFamily,
        fontSize: fontSize,
        fontWeight: FontWeight.w700,
        letterSpacing: -0.01 * fontSize,
        color: SacredColors.onSurface,
      );

  // Title — Timings
  static TextStyle title(double fontSize) => TextStyle(
        fontFamily: bodyFamily,
        fontSize: fontSize,
        fontWeight: FontWeight.w600,
        color: SacredColors.onSurface,
      );

  // Body
  static TextStyle body(double fontSize) => TextStyle(
        fontFamily: bodyFamily,
        fontSize: fontSize,
        fontWeight: FontWeight.w400,
        color: SacredColors.onSurface,
      );

  // Label — metadata
  static TextStyle label(double fontSize) => TextStyle(
        fontFamily: bodyFamily,
        fontSize: fontSize,
        fontWeight: FontWeight.w500,
        letterSpacing: 0.05 * fontSize,
        color: SacredColors.onSurfaceVariant,
      );

  // Label caps (for TRACKING-WIDEST uppercase captions)
  static TextStyle labelCaps(double fontSize) => TextStyle(
        fontFamily: bodyFamily,
        fontSize: fontSize,
        fontWeight: FontWeight.w700,
        letterSpacing: 0.2 * fontSize,
        color: SacredColors.onSurfaceVariant,
      );
}

// ──────────────────────────────────────────────
// SPACING — 8px grid
// ──────────────────────────────────────────────

class SacredSpacing {
  SacredSpacing._();

  static const double xs = 8;
  static const double sm = 16;
  static const double md = 24;
  static const double lg = 32;
  static const double xl = 48;
  static const double xxl = 64;
  static const double screenEdge = 64; // 4rem minimum from edges
}

// ──────────────────────────────────────────────
// RADII
// ──────────────────────────────────────────────

class SacredRadii {
  SacredRadii._();

  static const double sm = 4;
  static const double md = 8;
  static const double lg = 12;
  static const double xl = 16;
  static const double full = 9999;
}

// ──────────────────────────────────────────────
// TV SCALING
// ──────────────────────────────────────────────

class TVScale {
  TVScale._();

  /// Scale factor relative to 1920px baseline
  static double of(BuildContext context) {
    return MediaQuery.of(context).size.width / 1920;
  }

  static double fontSize(BuildContext context, double base) {
    return base * of(context);
  }
}