import 'dart:async';
import 'dart:convert';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:file_picker/file_picker.dart';
import '../../data/models/directorate_models.dart';
import '../../services/directorate_api_service.dart';

class SchoolPrincipalScreen extends StatefulWidget {
  const SchoolPrincipalScreen({super.key});

  @override
  State<SchoolPrincipalScreen> createState() => _SchoolPrincipalScreenState();
}

class _SchoolPrincipalScreenState extends State<SchoolPrincipalScreen>
    with SingleTickerProviderStateMixin {
  late TabController _tabController;
  bool _isLoading = true;
  Map<String, dynamic>? _dashboardData;

  // Recording State
  bool _isRecording = false;
  int _recordDurationSeconds = 0;
  Timer? _recordTimer;
  double _recordedSizeMb = 0.0;
  int? _selectedTeacherId;
  String? _selectedTeacher;
  String _selectedSubject = '';
  final TextEditingController _lessonTitleController =
      TextEditingController();
  RecordedLessonResult? _lastResult;

  // Exam state
  bool _examPushedToLab = false;
  bool _isPanoramicActive = false;
  double _panoramicSizeMb = 16.5;

  // Enterprise Integrity, Parent Reports & Roster State
  bool _isRunningIntegrityAudit = false;
  Map<String, dynamic>? _integrityResult;
  bool _isDispatchingParentReports = false;
  bool _isImportingRoster = false;

  @override
  void initState() {
    super.initState();
    _tabController = TabController(length: 3, vsync: this);
    _loadData();
  }

  Future<void> _loadData() async {
    setState(() => _isLoading = true);
    final data = await DirectorateApiService.fetchSchoolDashboard();
    if (mounted) {
      setState(() {
        _dashboardData = data;
        final teachers = data['teachers'] as List? ?? const [];
        if (teachers.isNotEmpty) {
          final first = Map<String, dynamic>.from(teachers.first as Map);
          _selectedTeacherId = (first['id'] as num?)?.toInt();
          _selectedTeacher = first['name']?.toString();
          _selectedSubject = first['subject']?.toString() ?? '';
        }
        _isLoading = false;
      });
    }
  }

  Future<void> _selectAndUploadRecording() async {
    if (_selectedTeacherId == null || _lessonTitleController.text.trim().isEmpty) {
      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('اختر معلماً وأدخل عنوان الحصة أولاً.')));
      return;
    }
    final selection = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: const ['mp4', 'mov', 'webm'],
      withData: true,
    );
    if (selection == null || selection.files.isEmpty) return;
    final file = selection.files.single;
    setState(() {
      _isRecording = true;
      _recordedSizeMb = file.size / 1048576;
      _lastResult = null;
    });

    // Show quick processing dialog
    showCupertinoDialog(
      context: context,
      barrierDismissible: false,
      builder: (ctx) => const Center(
        child: CupertinoActivityIndicator(radius: 20),
      ),
    );

    try {
      final result = await DirectorateApiService.recordLesson(
        schoolId: (_dashboardData?['school']?['id'] as num?)?.toInt() ?? 0,
        teacherId: _selectedTeacherId!,
        subject: _selectedSubject,
        gradeLevel: 'grade_10',
        lessonTitle: _lessonTitleController.text.trim(),
        durationMinutes: 0,
        filePath: file.path,
        fileBytes: file.bytes,
        fileName: file.name,
      );
      if (mounted) setState(() => _lastResult = result);
    } catch (e) {
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(e.toString())));
    } finally {
      if (mounted) {
        Navigator.of(context).pop();
        setState(() => _isRecording = false);
      }
    }
  }

  void _showDualFormsPreview() async {
    await DirectorateApiService.fetchDualForms();
    if (!mounted) return;

    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      backgroundColor: Colors.transparent,
      builder: (ctx) => Directionality(
        textDirection: TextDirection.rtl,
        child: Container(
          height: MediaQuery.of(context).size.height * 0.8,
          decoration: const BoxDecoration(
            color: Color(0xFF0F172A),
            borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
            border: Border(top: BorderSide(color: Color(0xFF8B5CF6), width: 2)),
          ),
          padding: const EdgeInsets.all(20),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Center(
                child: Container(
                  width: 40,
                  height: 4,
                  decoration: BoxDecoration(
                    color: const Color(0xFF334155),
                    borderRadius: BorderRadius.circular(2),
                  ),
                ),
              ),
              const SizedBox(height: 14),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  const Text(
                    'معاينة النماذج الموحدة (نموذج أ ونموذج ب)',
                    style: TextStyle(
                      fontSize: 15,
                      fontWeight: FontWeight.w800,
                      color: Colors.white,
                    ),
                  ),
                  IconButton(
                    icon: const Icon(CupertinoIcons.xmark, color: Colors.white70),
                    onPressed: () => Navigator.of(context).pop(),
                  ),
                ],
              ),
              const SizedBox(height: 10),
              Container(
                padding: const EdgeInsets.all(12),
                decoration: BoxDecoration(
                  color: const Color(0xFF1E1B4B),
                  borderRadius: BorderRadius.circular(10),
                  border: Border.all(color: const Color(0xFF8B5CF6).withOpacity(0.3)),
                ),
                child: const Text(
                  'المخطط الهجين: 70% أسئلة موضوعية مبرمجة على محطات الحاسوب + 30% خطوات إنشائية ورقية مطبوعة مع باركود تسلسلي مشفر.',
                  style: TextStyle(fontSize: 12, color: Color(0xFFC4B5FD), height: 1.4),
                ),
              ),
              const SizedBox(height: 14),
              Expanded(
                child: Row(
                  children: [
                    // Form A Card
                    Expanded(
                      child: Container(
                        padding: const EdgeInsets.all(14),
                        decoration: BoxDecoration(
                          color: const Color(0xFF161F30),
                          borderRadius: BorderRadius.circular(14),
                          border: Border.all(color: const Color(0xFF10B981).withOpacity(0.5)),
                        ),
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            const Row(
                              children: [
                                Icon(CupertinoIcons.doc_checkmark_fill, color: Color(0xFF10B981), size: 16),
                                SizedBox(width: 6),
                                Text('النموذج (أ) — الفا', style: TextStyle(fontWeight: FontWeight.w800, color: Color(0xFF34D399), fontSize: 13)),
                              ],
                            ),
                            const SizedBox(height: 8),
                            const Text('الباركود التسلسلي:\nSAQEL-EXAM-A-ALPHA', style: TextStyle(fontSize: 11, color: Color(0xFF94A3B8))),
                            const Divider(color: Color(0xFF1E293B)),
                            const Text('• 20 مسألة موضوعية (70 علامة)\n• مسألتان إنشائيتان (30 علامة)\n• باركود موجه لكاميرا المشرف', style: TextStyle(fontSize: 11.5, color: Colors.white70, height: 1.6)),
                          ],
                        ),
                      ),
                    ),
                    const SizedBox(width: 10),
                    // Form B Card
                    Expanded(
                      child: Container(
                        padding: const EdgeInsets.all(14),
                        decoration: BoxDecoration(
                          color: const Color(0xFF161F30),
                          borderRadius: BorderRadius.circular(14),
                          border: Border.all(color: const Color(0xFF38BDF8).withOpacity(0.5)),
                        ),
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            const Row(
                              children: [
                                Icon(CupertinoIcons.doc_plaintext, color: Color(0xFF38BDF8), size: 16),
                                SizedBox(width: 6),
                                Text('النموذج (ب) — بيتا', style: TextStyle(fontWeight: FontWeight.w800, color: Color(0xFF38BDF8), fontSize: 13)),
                              ],
                            ),
                            const SizedBox(height: 8),
                            const Text('الباركود التسلسلي:\nSAQEL-EXAM-B-BETA', style: TextStyle(fontSize: 11, color: Color(0xFF94A3B8))),
                            const Divider(color: Color(0xFF1E293B)),
                            const Text('• خلط كامل لترتيب الأسئلة\n• تغيير معطيات الأرقام للمقاعد المتجاورة لمنع النقل', style: TextStyle(fontSize: 11.5, color: Colors.white70, height: 1.6)),
                          ],
                        ),
                      ),
                    ),
                  ],
                ),
              ),
              const SizedBox(height: 14),
              ElevatedButton.icon(
                onPressed: () {
                  Navigator.of(context).pop();
                  ScaffoldMessenger.of(context).showSnackBar(
                    const SnackBar(
                      content: Text('🖨️ تم إرسال 48 نسخة من النموذج أ وب ومسودات الباركود لطابعة المدرسة المركزية'),
                      backgroundColor: Color(0xFF10B981),
                    ),
                  );
                },
                icon: const Icon(CupertinoIcons.printer_fill, size: 16),
                label: const Text('أمر طباعة النماذج والباركود الآن'),
                style: ElevatedButton.styleFrom(
                  backgroundColor: const Color(0xFF8B5CF6),
                  foregroundColor: Colors.white,
                  padding: const EdgeInsets.symmetric(vertical: 12),
                  shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  void _runIntegrityAudit() async {
    setState(() => _isRunningIntegrityAudit = true);
    final res = await DirectorateApiService.evaluateExamSessionIntegrity();
    if (mounted) {
      setState(() {
        _integrityResult = res;
        _isRunningIntegrityAudit = false;
      });
    }
  }

  void _dispatchParentReports() async {
    setState(() => _isDispatchingParentReports = true);
    final res = await DirectorateApiService.dispatchParentReports();
    if (mounted) {
      setState(() => _isDispatchingParentReports = false);
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text(res['message'] ?? 'تم إرسال التقارير لأولياء الأمور بنجاح'),
          backgroundColor: const Color(0xFF10B981),
        ),
      );
    }
  }

  void _importSchoolRoster() async {
    final picked = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: const ['csv', 'json'],
      withData: true,
    );
    if (picked == null || picked.files.single.bytes == null) return;

    setState(() => _isImportingRoster = true);
    try {
      final file = picked.files.single;
      final text = utf8.decode(file.bytes!);
      final List<Map<String, dynamic>> records;
      if (file.extension?.toLowerCase() == 'json') {
        final decoded = json.decode(text);
        if (decoded is! List) throw const FormatException('ملف JSON يجب أن يحتوي قائمة طلبة.');
        records = decoded.map((row) => Map<String, dynamic>.from(row as Map)).toList();
      } else {
        final lines = const LineSplitter()
            .convert(text)
            .where((line) => line.trim().isNotEmpty)
            .toList();
        if (lines.length < 2) throw const FormatException('ملف CSV فارغ.');
        final headers = lines.first.split(',').map((h) => h.trim()).toList();
        records = lines.skip(1).map((line) {
          final values = line.split(',');
          return <String, dynamic>{
            for (var i = 0; i < headers.length; i++)
              headers[i]: i < values.length ? values[i].trim() : '',
          };
        }).toList();
      }

      final res = await DirectorateApiService.importSchoolRoster(records: records);
      if (!mounted) return;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          content: Text('تم استيراد ${res['imported_count']} طالباً والتحقق من بياناتهم بنجاح.'),
          backgroundColor: const Color(0xFF0284C7),
        ),
      );
    } catch (e) {
      if (mounted) {
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(content: Text('تعذر استيراد الكشف: $e'), backgroundColor: const Color(0xFFDC2626)),
        );
      }
    } finally {
      if (mounted) setState(() => _isImportingRoster = false);
    }
  }

  @override
  void dispose() {
    _tabController.dispose();
    _recordTimer?.cancel();
    _lessonTitleController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    if (_isLoading) {
      return const Scaffold(
        backgroundColor: Color(0xFF070B12),
        body: Center(
          child: CupertinoActivityIndicator(color: Color(0xFF8B5CF6), radius: 18),
        ),
      );
    }

    final school = _dashboardData?['school'] ?? {};
    final teachers = (_dashboardData?['teachers'] as List? ?? [])
        .map((t) => TeacherItem.fromJson(t))
        .toList();

    return Scaffold(
      backgroundColor: const Color(0xFF070B12),
      appBar: AppBar(
        backgroundColor: const Color(0xFF0E1626),
        elevation: 0,
        centerTitle: false,
        title: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              school['name'] ?? 'إدارة المدرسة العسكرية',
              style: const TextStyle(
                fontSize: 16,
                fontWeight: FontWeight.w700,
                color: Colors.white,
              ),
            ),
            const SizedBox(height: 2),
            Row(
              children: [
                const Icon(CupertinoIcons.location_solid,
                    size: 12, color: Color(0xFF94A3B8)),
                const SizedBox(width: 4),
                Text(
                  school['governorate'] ?? 'العاصمة - عمان',
                  style: const TextStyle(fontSize: 12, color: Color(0xFF94A3B8)),
                ),
                const SizedBox(width: 8),
                Container(
                  padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1),
                  decoration: BoxDecoration(
                    color: const Color(0xFF1E293B),
                    borderRadius: BorderRadius.circular(4),
                  ),
                  child: const Text(
                    'الفئة (ج) كبرى · 980 طالباً',
                    style: TextStyle(fontSize: 11, color: Color(0xFFA78BFA)),
                  ),
                )
              ],
            )
          ],
        ),
        bottom: TabBar(
          controller: _tabController,
          indicatorColor: const Color(0xFF8B5CF6),
          indicatorWeight: 3,
          labelColor: Colors.white,
          unselectedLabelColor: const Color(0xFF64748B),
          labelStyle: const TextStyle(fontWeight: FontWeight.w700, fontSize: 13.5),
          tabs: const [
            Tab(
              icon: Icon(CupertinoIcons.video_camera_solid, size: 18),
              text: 'تسجيل الحصص الصفية',
            ),
            Tab(
              icon: Icon(CupertinoIcons.person_2_fill, size: 18),
              text: 'المعلمون والدورية',
            ),
            Tab(
              icon: Icon(CupertinoIcons.doc_text_fill, size: 18),
              text: 'الامتحانات ومختبر الحاسوب',
            ),
          ],
        ),
      ),
      body: TabBarView(
        controller: _tabController,
        children: [
          _buildLessonRecordingTab(teachers),
          _buildTeachersQuotaTab(teachers),
          _buildUnifiedExamsTab(),
        ],
      ),
    );
  }

  // ---------------------------------------------------------------------------
  // TAB 1: Classroom Video Recording & Pedagogical Quality Audit
  // ---------------------------------------------------------------------------
  Widget _buildLessonRecordingTab(List<TeacherItem> teachers) {
    return SingleChildScrollView(
      padding: const EdgeInsets.all(18),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          // Quota Banner
          Container(
            padding: const EdgeInsets.all(14),
            decoration: BoxDecoration(
              gradient: LinearGradient(
                colors: [const Color(0xFF1E1B4B), const Color(0xFF0F172A)],
                begin: Alignment.topRight,
                end: Alignment.bottomLeft,
              ),
              borderRadius: BorderRadius.circular(14),
              border: Border.all(color: const Color(0xFF4338CA).withOpacity(0.5)),
            ),
            child: Row(
              children: [
                Container(
                  padding: const EdgeInsets.all(10),
                  decoration: BoxDecoration(
                    color: const Color(0xFF4F46E5).withOpacity(0.2),
                    shape: BoxShape.circle,
                  ),
                  child: const Icon(CupertinoIcons.calendar_badge_plus,
                      color: Color(0xFFA5B4FC), size: 24),
                ),
                const SizedBox(width: 14),
                const Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        'دورية التدقيق الميداني المعتمدة',
                        style: TextStyle(
                            fontSize: 14,
                            fontWeight: FontWeight.w700,
                            color: Colors.white),
                      ),
                      SizedBox(height: 2),
                      Text(
                        'حصة مرئية واحدة لكل معلم كل أسبوعين (الحد الأقصى للحجم: 400 ميجابايت بدقة 720p)',
                        style: TextStyle(fontSize: 12, color: Color(0xFFCBD5E1)),
                      ),
                    ],
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(height: 18),

          // Camera Viewport Simulation Card
          Container(
            height: 240,
            decoration: BoxDecoration(
              color: const Color(0xFF0F172A),
              borderRadius: BorderRadius.circular(16),
              border: Border.all(
                color: _isRecording
                    ? const Color(0xFFEF4444)
                    : const Color(0xFF1E293B),
                width: _isRecording ? 2 : 1,
              ),
              boxShadow: _isRecording
                  ? [
                      BoxShadow(
                        color: const Color(0xFFEF4444).withOpacity(0.2),
                        blurRadius: 20,
                        spreadRadius: 2,
                      )
                    ]
                  : [],
            ),
            child: Stack(
              children: [
                // Mock Classroom Background Grid
                Center(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Icon(
                        CupertinoIcons.videocam_fill,
                        size: 54,
                        color: _isRecording
                            ? const Color(0xFFEF4444)
                            : const Color(0xFF475569),
                      ),
                      const SizedBox(height: 10),
                      Text(
                        _isRecording
                            ? 'جاري تصوير وقائع الحصة الصفية داخل الغرفة...'
                            : 'كاميرا المشرف جاهزة للتسجيل الصفي',
                        style: TextStyle(
                          fontSize: 14,
                          fontWeight: FontWeight.w600,
                          color: _isRecording ? Colors.white : const Color(0xFF94A3B8),
                        ),
                      ),
                      const SizedBox(height: 4),
                      Text(
                        'ترميز ذكي 720p · محدد تلقائياً لسقف 400 ميجابايت',
                        style: TextStyle(
                            fontSize: 12, color: const Color(0xFF64748B)),
                      ),
                    ],
                  ),
                ),

                // Top Status Bar in Camera
                Positioned(
                  top: 12,
                  left: 12,
                  right: 12,
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.spaceBetween,
                    children: [
                      if (_isRecording)
                        Row(
                          children: [
                            Container(
                              width: 10,
                              height: 10,
                              decoration: const BoxDecoration(
                                color: Color(0xFFEF4444),
                                shape: BoxShape.circle,
                              ),
                            ),
                            const SizedBox(width: 6),
                            const Text(
                              'تسجيل نشط (REC)',
                              style: TextStyle(
                                  color: Color(0xFFEF4444),
                                  fontWeight: FontWeight.w800,
                                  fontSize: 12),
                            ),
                          ],
                        )
                      else
                        const Text(
                          'جاهز',
                          style: TextStyle(color: Color(0xFF10B981), fontSize: 12),
                        ),

                      // Metrics
                      Container(
                        padding: const EdgeInsets.symmetric(
                            horizontal: 10, vertical: 4),
                        decoration: BoxDecoration(
                          color: Colors.black.withOpacity(0.6),
                          borderRadius: BorderRadius.circular(20),
                        ),
                        child: Text(
                          _isRecording
                              ? '${_formatDuration(_recordDurationSeconds)} | ${_recordedSizeMb.toStringAsFixed(1)} MB / 400 MB'
                              : '00:00 | 0.0 MB',
                          style: const TextStyle(
                              color: Colors.white,
                              fontSize: 12,
                              fontWeight: FontWeight.w700),
                        ),
                      )
                    ],
                  ),
                ),

                // Bottom Action inside Camera
                Positioned(
                  bottom: 14,
                  left: 14,
                  right: 14,
                  child: ElevatedButton(
                    onPressed: _isRecording ? null : _selectAndUploadRecording,
                    style: ElevatedButton.styleFrom(
                      backgroundColor: _isRecording
                          ? const Color(0xFFDC2626)
                          : const Color(0xFF8B5CF6),
                      padding: const EdgeInsets.symmetric(vertical: 14),
                      shape: RoundedRectangleBorder(
                          borderRadius: BorderRadius.circular(12)),
                    ),
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Icon(
                            _isRecording
                                ? CupertinoIcons.stop_fill
                                : CupertinoIcons.circle_fill,
                            size: 18),
                        const SizedBox(width: 8),
                        Text(
                          _isRecording ? 'جارٍ رفع الحصة إلى R2…' : 'اختيار فيديو حصة حقيقي ورفعه 🎥',
                          style: const TextStyle(
                              fontSize: 15, fontWeight: FontWeight.w700),
                        ),
                      ],
                    ),
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(height: 18),

          // Lesson Details Form
          Container(
            padding: const EdgeInsets.all(16),
            decoration: BoxDecoration(
              color: const Color(0xFF0F172A),
              borderRadius: BorderRadius.circular(14),
              border: Border.all(color: const Color(0xFF1E293B)),
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                const Text(
                  'بيانات الحصة والمعلم المستهدف:',
                  style: TextStyle(
                      fontSize: 14,
                      fontWeight: FontWeight.w700,
                      color: Colors.white),
                ),
                const SizedBox(height: 12),
                Row(
                  children: [
                    Expanded(
                      child: DropdownButtonFormField<String>(
                        initialValue: _selectedTeacher,
                        dropdownColor: const Color(0xFF1E293B),
                        style: const TextStyle(color: Colors.white, fontSize: 13),
                        decoration: InputDecoration(
                          labelText: 'المعلم',
                          labelStyle: const TextStyle(color: Color(0xFF94A3B8)),
                          filled: true,
                          fillColor: const Color(0xFF161F30),
                          border: OutlineInputBorder(
                              borderRadius: BorderRadius.circular(10)),
                        ),
                        items: teachers
                            .map((t) => DropdownMenuItem(
                                value: t.name, child: Text(t.name)))
                            .toList(),
                        onChanged: (val) {
                          if (val != null) {
                            final teacher = teachers.firstWhere((t) => t.name == val);
                            setState(() {
                              _selectedTeacher = val;
                              _selectedTeacherId = teacher.id;
                              _selectedSubject = teacher.subject;
                            });
                          }
                        },
                      ),
                    ),
                    const SizedBox(width: 12),
                    Expanded(
                      child: DropdownButtonFormField<String>(
                        initialValue: _selectedSubject.isEmpty ? null : _selectedSubject,
                        dropdownColor: const Color(0xFF1E293B),
                        style: const TextStyle(color: Colors.white, fontSize: 13),
                        decoration: InputDecoration(
                          labelText: 'المادة',
                          labelStyle: const TextStyle(color: Color(0xFF94A3B8)),
                          filled: true,
                          fillColor: const Color(0xFF161F30),
                          border: OutlineInputBorder(
                              borderRadius: BorderRadius.circular(10)),
                        ),
                        items: teachers.map((t) => t.subject).where((s) => s.isNotEmpty).toSet()
                            .map((s) => DropdownMenuItem(value: s, child: Text(s))).toList(),
                        onChanged: (val) {
                          if (val != null) setState(() => _selectedSubject = val);
                        },
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 12),
                TextField(
                  controller: _lessonTitleController,
                  style: const TextStyle(color: Colors.white, fontSize: 13.5),
                  decoration: InputDecoration(
                    labelText: 'عنوان الدرس وفق المنهاج الوزاري',
                    labelStyle: const TextStyle(color: Color(0xFF94A3B8)),
                    filled: true,
                    fillColor: const Color(0xFF161F30),
                    border: OutlineInputBorder(
                        borderRadius: BorderRadius.circular(10)),
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(height: 18),

          // AI Evaluation Card (if available)
          if (_lastResult != null) _buildAiResultCard(_lastResult!),
        ],
      ),
    );
  }

  Widget _buildAiResultCard(RecordedLessonResult res) {
    return Container(
      padding: const EdgeInsets.all(18),
      decoration: BoxDecoration(
        color: const Color(0xFF111827),
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: const Color(0xFF10B981).withOpacity(0.6)),
        boxShadow: [
          BoxShadow(
            color: const Color(0xFF10B981).withOpacity(0.1),
            blurRadius: 20,
          )
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              const Row(
                children: [
                  Icon(CupertinoIcons.checkmark_seal_fill,
                      color: Color(0xFF10B981), size: 22),
                  SizedBox(width: 8),
                  Text(
                    'بطاقة التدقيق التربوي المعتمدة بالذكاء الاصطناعي',
                    style: TextStyle(
                        fontSize: 14.5,
                        fontWeight: FontWeight.w700,
                        color: Colors.white),
                  ),
                ],
              ),
              Container(
                padding:
                    const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
                decoration: BoxDecoration(
                  color: const Color(0xFF10B981).withOpacity(0.2),
                  borderRadius: BorderRadius.circular(8),
                ),
                child: Text(
                  '${res.aiAlignmentScore}% مطابقة',
                  style: const TextStyle(
                      color: Color(0xFF10B981),
                      fontWeight: FontWeight.w800,
                      fontSize: 13),
                ),
              ),
            ],
          ),
          const SizedBox(height: 12),
          Text(
            res.reportSummary,
            style: const TextStyle(
                fontSize: 13, color: Color(0xFFCBD5E1), height: 1.5),
          ),
          const SizedBox(height: 14),
          Row(
            children: [
              _metricChip('نسبة كلام المعلم', res.teacherTalkRatio),
              const SizedBox(width: 8),
              _metricChip('مدة الحصة', '${res.durationMinutes} دقيقة'),
              const SizedBox(width: 8),
              _metricChip('حجم الفيديو', '${res.fileSizeMb.toStringAsFixed(1)} MB'),
            ],
          ),
          const Divider(color: Color(0xFF1F2937), height: 24),
          const Text(
            'الوقفات السقراطية المقترحة أثناء الحصة:',
            style: TextStyle(
                fontSize: 13,
                fontWeight: FontWeight.w700,
                color: Color(0xFFA78BFA)),
          ),
          const SizedBox(height: 8),
          ...res.socraticCheckpoints.map((cp) => Container(
                margin: const EdgeInsets.only(bottom: 6),
                padding: const EdgeInsets.all(10),
                decoration: BoxDecoration(
                  color: const Color(0xFF1E293B),
                  borderRadius: BorderRadius.circular(8),
                ),
                child: Row(
                  children: [
                    Text(
                      cp['timestamp'] ?? '',
                      style: const TextStyle(
                          color: Color(0xFFF59E0B),
                          fontWeight: FontWeight.w700,
                          fontSize: 12),
                    ),
                    const SizedBox(width: 10),
                    Expanded(
                      child: Text(
                        cp['question'] ?? '',
                        style:
                            const TextStyle(color: Colors.white, fontSize: 12.5),
                      ),
                    ),
                  ],
                ),
              )),
        ],
      ),
    );
  }

  // ---------------------------------------------------------------------------
  // TAB 2: Teachers & Bi-Weekly Quota Tracking
  // ---------------------------------------------------------------------------
  Widget _buildTeachersQuotaTab(List<TeacherItem> teachers) {
    return ListView.builder(
      padding: const EdgeInsets.all(16),
      itemCount: teachers.length,
      itemBuilder: (ctx, idx) {
        final t = teachers[idx];
        return Container(
          margin: const EdgeInsets.only(bottom: 12),
          padding: const EdgeInsets.all(16),
          decoration: BoxDecoration(
            color: const Color(0xFF0F172A),
            borderRadius: BorderRadius.circular(14),
            border: Border.all(color: const Color(0xFF1E293B)),
          ),
          child: Row(
            children: [
              CircleAvatar(
                radius: 22,
                backgroundColor: t.isCompleted
                    ? const Color(0xFF10B981).withOpacity(0.2)
                    : const Color(0xFFF59E0B).withOpacity(0.2),
                child: Text(
                  t.name.split(' ').first,
                  style: TextStyle(
                    fontSize: 13,
                    fontWeight: FontWeight.w700,
                    color: t.isCompleted
                        ? const Color(0xFF10B981)
                        : const Color(0xFFF59E0B),
                  ),
                ),
              ),
              const SizedBox(width: 14),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Row(
                      children: [
                        Text(
                          t.name,
                          style: const TextStyle(
                              fontSize: 14.5,
                              fontWeight: FontWeight.w700,
                              color: Colors.white),
                        ),
                        const SizedBox(width: 8),
                        Container(
                          padding: const EdgeInsets.symmetric(
                              horizontal: 6, vertical: 1),
                          decoration: BoxDecoration(
                            color: const Color(0xFF1E293B),
                            borderRadius: BorderRadius.circular(4),
                          ),
                          child: Text(
                            t.subject,
                            style: const TextStyle(
                                fontSize: 11, color: Color(0xFF94A3B8)),
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 4),
                    Text(
                      'آخر حصة: ${t.lastLesson}',
                      style:
                          const TextStyle(fontSize: 12, color: Color(0xFF64748B)),
                      maxLines: 1,
                      overflow: TextOverflow.ellipsis,
                    ),
                  ],
                ),
              ),
              Column(
                crossAxisAlignment: CrossAxisAlignment.end,
                children: [
                  Container(
                    padding:
                        const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
                    decoration: BoxDecoration(
                      color: t.isCompleted
                          ? const Color(0xFF065F46)
                          : const Color(0xFF78350F),
                      borderRadius: BorderRadius.circular(6),
                    ),
                    child: Text(
                      t.isCompleted ? 'مكتمل الدورية' : 'متبقي هذا الأسبوع',
                      style: TextStyle(
                        fontSize: 11,
                        fontWeight: FontWeight.w700,
                        color: t.isCompleted
                            ? const Color(0xFF34D399)
                            : const Color(0xFFFBBF24),
                      ),
                    ),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    'التقييم: ${t.aiScore}%',
                    style: const TextStyle(
                        fontSize: 11.5,
                        color: Color(0xFFA78BFA),
                        fontWeight: FontWeight.w600),
                  ),
                ],
              ),
            ],
          ),
        );
      },
    );
  }

  // ---------------------------------------------------------------------------
  // TAB 3: Unified Exams, Lab Dispatch & Smart Panoramic Surveillance
  // ---------------------------------------------------------------------------
  Widget _buildUnifiedExamsTab() {
    return SingleChildScrollView(
      padding: const EdgeInsets.all(18),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          // Active Exam Card
          Container(
            padding: const EdgeInsets.all(18),
            decoration: BoxDecoration(
              gradient: LinearGradient(
                colors: [const Color(0xFF1E293B), const Color(0xFF0F172A)],
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
              ),
              borderRadius: BorderRadius.circular(16),
              border: Border.all(color: const Color(0xFF8B5CF6).withOpacity(0.5)),
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Row(
                      children: [
                        Icon(CupertinoIcons.doc_checkmark_fill,
                            color: Color(0xFFA78BFA), size: 20),
                        SizedBox(width: 8),
                        Text(
                          'امتحان وزاري موحد من مديرية الثقافة العسكرية',
                          style: TextStyle(
                              fontSize: 14,
                              fontWeight: FontWeight.w700,
                              color: Colors.white),
                        ),
                      ],
                    ),
                    Container(
                      padding: const EdgeInsets.symmetric(
                          horizontal: 8, vertical: 3),
                      decoration: BoxDecoration(
                        color: const Color(0xFF8B5CF6).withOpacity(0.2),
                        borderRadius: BorderRadius.circular(6),
                      ),
                      child: const Text(
                        'موعد موحد: 09:00 ص',
                        style: TextStyle(
                            fontSize: 11.5,
                            color: Color(0xFFA78BFA),
                            fontWeight: FontWeight.w700),
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 12),
                const Text(
                  'الرياضيات العلمي - محاكاة امتحان التوجيهي الوزاري 2008',
                  style: TextStyle(
                      fontSize: 16,
                      fontWeight: FontWeight.w800,
                      color: Colors.white),
                ),
                const SizedBox(height: 6),
                const Text(
                  'المدة: 60 دقيقة · جدول المواصفات الوزاري المعتمد · نموذجان (أ و ب)',
                  style: TextStyle(fontSize: 12.5, color: Color(0xFF94A3B8)),
                ),
                const SizedBox(height: 16),

                // Lab Push & Print Buttons
                Row(
                  children: [
                    Expanded(
                      child: ElevatedButton.icon(
                        onPressed: () async {
                          final exams = _dashboardData?['active_exams'] as List? ?? const [];
                          final examId = exams.isEmpty
                              ? 0
                              : (Map<String, dynamic>.from(exams.first as Map)['id'] as num?)?.toInt() ?? 0;
                          final schoolId = (_dashboardData?['school']?['id'] as num?)?.toInt() ?? 0;
                          if (examId == 0 || schoolId == 0) {
                            ScaffoldMessenger.of(context).showSnackBar(
                              const SnackBar(content: Text('لا يوجد امتحان حقيقي مجدول لهذه المدرسة.')),
                            );
                            return;
                          }
                          final ok = await DirectorateApiService.pushExamToLab(
                            examId: examId,
                            schoolId: schoolId,
                          );
                          if (ok && mounted) {
                            setState(() => _examPushedToLab = true);
                            ScaffoldMessenger.of(context).showSnackBar(
                              const SnackBar(
                                content: Text(
                                    '✅ تم بث الامتحان لمحطات مختبر الحاسوب وتفعيل البيئة المقفلة (Kiosk Mode)'),
                                backgroundColor: Color(0xFF10B981),
                              ),
                            );
                          }
                        },
                        icon: Icon(
                            _examPushedToLab
                                ? CupertinoIcons.checkmark_alt_circle_fill
                                : CupertinoIcons.desktopcomputer,
                            size: 16),
                        label: Text(
                          _examPushedToLab
                              ? 'تم البث لمختبر الحاسوب'
                              : 'إرسال لمختبر الحاسوب (32 جهازاً)',
                          style: const TextStyle(
                              fontSize: 12.5, fontWeight: FontWeight.w700),
                        ),
                        style: ElevatedButton.styleFrom(
                          backgroundColor: _examPushedToLab
                              ? const Color(0xFF059669)
                              : const Color(0xFF4F46E5),
                          padding: const EdgeInsets.symmetric(vertical: 12),
                          shape: RoundedRectangleBorder(
                              borderRadius: BorderRadius.circular(10)),
                        ),
                      ),
                    ),
                    const SizedBox(width: 8),
                    ElevatedButton.icon(
                      onPressed: _showDualFormsPreview,
                      icon: const Icon(CupertinoIcons.doc_on_doc_fill, size: 16),
                      label: const Text('معاينة وطباعة النماذج (أ وب)',
                          style: TextStyle(fontSize: 12.5)),
                      style: ElevatedButton.styleFrom(
                        backgroundColor: const Color(0xFF8B5CF6),
                        foregroundColor: Colors.white,
                        padding: const EdgeInsets.symmetric(
                            vertical: 12, horizontal: 14),
                        shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(10)),
                      ),
                    ),
                  ],
                ),
              ],
            ),
          ),
          const SizedBox(height: 18),

          // Smart Panoramic Surveillance Viewport
          Container(
            padding: const EdgeInsets.all(16),
            decoration: BoxDecoration(
              color: const Color(0xFF0F172A),
              borderRadius: BorderRadius.circular(16),
              border: Border.all(
                color: _isPanoramicActive
                    ? const Color(0xFFEF4444)
                    : const Color(0xFF1E293B),
                width: _isPanoramicActive ? 2 : 1,
              ),
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Row(
                      children: [
                        Container(
                          width: 10,
                          height: 10,
                          decoration: BoxDecoration(
                            color: _isPanoramicActive
                                ? const Color(0xFFEF4444)
                                : const Color(0xFF64748B),
                            shape: BoxShape.circle,
                          ),
                        ),
                        const SizedBox(width: 8),
                        const Text(
                          'الرقابة البانورامية بتقنية التقطيع الزمني الذكي',
                          style: TextStyle(
                              fontSize: 13.5,
                              fontWeight: FontWeight.w700,
                              color: Colors.white),
                        ),
                      ],
                    ),
                    Container(
                      padding: const EdgeInsets.symmetric(
                          horizontal: 8, vertical: 3),
                      decoration: BoxDecoration(
                        color: const Color(0xFF1E293B),
                        borderRadius: BorderRadius.circular(6),
                      ),
                      child: Text(
                        'الحجم: ${_panoramicSizeMb.toStringAsFixed(1)} MB فقط',
                        style: const TextStyle(
                            fontSize: 11.5,
                            color: Color(0xFF38BDF8),
                            fontWeight: FontWeight.w700),
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 10),
                const Text(
                  'المبدأ: تظهر الكاميرا نشطة طوال الامتحان لفرض الردع النفسي، لكن التطبيق يقتطع ثانيتين فقط كل دقيقة لينتج مقطعاً مجمعاً مدته دقيقتان فقط بحجم 16.5 ميجابايت.',
                  style: TextStyle(
                      fontSize: 12, color: Color(0xFF94A3B8), height: 1.5),
                ),
                const SizedBox(height: 14),

                // Toggle Panoramic Button
                ElevatedButton.icon(
                  onPressed: () async {
                    final exams = _dashboardData?['active_exams'] as List? ?? const [];
                    final sessionId = exams.isEmpty
                        ? 0
                        : (Map<String, dynamic>.from(exams.first as Map)['session_id'] as num?)?.toInt() ?? 0;
                    if (sessionId == 0) {
                      ScaffoldMessenger.of(context).showSnackBar(
                        const SnackBar(content: Text('لا توجد جلسة امتحان حقيقية لربط العينة بها.')),
                      );
                      return;
                    }
                    final selected = await FilePicker.platform.pickFiles(type: FileType.video, withData: true);
                    if (selected == null || selected.files.isEmpty) return;
                    final file = selected.files.single;
                    setState(() {
                      _isPanoramicActive = true;
                      _panoramicSizeMb = file.size / 1048576;
                    });
                    try {
                      await DirectorateApiService.uploadPanoramicSample(
                        sessionId: sessionId,
                        filePath: file.path,
                        fileBytes: file.bytes,
                        fileName: file.name,
                      );
                    } finally {
                      if (mounted) setState(() => _isPanoramicActive = false);
                    }
                  },
                  icon: Icon(
                      _isPanoramicActive
                          ? CupertinoIcons.eye_slash_fill
                          : CupertinoIcons.eye_fill,
                      size: 16),
                  label: Text(
                    _isPanoramicActive
                        ? 'إيقاف نمط الرقابة البانورامية'
                        : 'تفعيل نمط الرقابة البانورامية في القاعة 👁️',
                    style: const TextStyle(
                        fontSize: 13, fontWeight: FontWeight.w700),
                  ),
                  style: ElevatedButton.styleFrom(
                    backgroundColor: _isPanoramicActive
                        ? const Color(0xFFB91C1C)
                        : const Color(0xFF0284C7),
                    padding: const EdgeInsets.symmetric(vertical: 12),
                    shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(10)),
                  ),
                ),
              ],
            ),
          ),
          const SizedBox(height: 18),

          // Anomaly Indicator Summary & Statistical Detection
          Container(
            padding: const EdgeInsets.all(16),
            decoration: BoxDecoration(
              color: const Color(0xFF0F172A),
              borderRadius: BorderRadius.circular(16),
              border: Border.all(color: const Color(0xFF1E293B)),
            ),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Text(
                      'مؤشرات الذكاء الإحصائي لكشف الشذوذ والتواطؤ:',
                      style: TextStyle(
                          fontSize: 13.5,
                          fontWeight: FontWeight.w700,
                          color: Colors.white),
                    ),
                    ElevatedButton.icon(
                      onPressed: _isRunningIntegrityAudit ? null : _runIntegrityAudit,
                      icon: _isRunningIntegrityAudit
                          ? const SizedBox(width: 14, height: 14, child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white))
                          : const Icon(CupertinoIcons.waveform_path_ecg, size: 15),
                      label: Text(
                        _isRunningIntegrityAudit ? 'جاري الفحص...' : 'فحص النزاهة اللحظي ⚡',
                        style: const TextStyle(fontSize: 11.5, fontWeight: FontWeight.w800),
                      ),
                      style: ElevatedButton.styleFrom(
                        backgroundColor: const Color(0xFF0284C7),
                        foregroundColor: Colors.white,
                        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
                        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
                      ),
                    ),
                  ],
                ),
                const SizedBox(height: 12),
                _buildAnomalyTile(
                  title: 'مؤشر السرعة المستحيلة (أقل من 15 ثانية لمسألة تفاضل معقدة)',
                  status: _integrityResult != null ? 'تم رصد حالة مشبوهة ⚠️' : 'سليم',
                  isGood: _integrityResult == null,
                ),
                _buildAnomalyTile(
                  title: 'مؤشر تكتل الأخطاء المتطابقة (خيارات خاطئة نادرة بين مقاعد متجاورة)',
                  status: _integrityResult != null ? 'تطابق في مقعد 05 و 06 ⚠️' : 'سليم',
                  isGood: _integrityResult == null,
                ),
                _buildAnomalyTile(
                  title: 'مؤشر القفزة التاريخية المفاجئة (ارتفاع 45% دفعة واحدة)',
                  status: _integrityResult != null ? 'حالة واحدة تتطلب مطابقة الخطوات الورقية ⚠️' : 'سليم',
                  isGood: _integrityResult == null,
                ),

                // Live Anomalies Feed
                if (_integrityResult != null && (_integrityResult!['anomalies'] as List? ?? []).isNotEmpty) ...[
                  const Divider(color: Color(0xFF1E293B), height: 20),
                  const Text('🚨 تنبيهات الشذوذ المكتشفة ومقترحات المشرف:', style: TextStyle(fontSize: 12.5, fontWeight: FontWeight.w800, color: Color(0xFFEF4444))),
                  const SizedBox(height: 8),
                  ...((_integrityResult!['anomalies'] as List).take(2).map((anom) => Container(
                    margin: const EdgeInsets.only(bottom: 8),
                    padding: const EdgeInsets.all(10),
                    decoration: BoxDecoration(
                      color: const Color(0xFF7F1D1D).withOpacity(0.25),
                      borderRadius: BorderRadius.circular(8),
                      border: Border.all(color: const Color(0xFFEF4444).withOpacity(0.4)),
                    ),
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text('${anom['title']} · ${anom['student_name']} (${anom['seat_number']})', style: const TextStyle(fontSize: 11.5, fontWeight: FontWeight.w800, color: Color(0xFFFCA5A5))),
                        const SizedBox(height: 4),
                        Text(anom['details'] ?? '', style: const TextStyle(fontSize: 11, color: Colors.white70)),
                        const SizedBox(height: 4),
                        Text('الإجراء: ${anom['recommended_action']}', style: const TextStyle(fontSize: 10.5, color: Color(0xFFFBBF24), fontWeight: FontWeight.w700)),
                      ],
                    ),
                  ))),
                ],
              ],
            ),
          ),
          const SizedBox(height: 18),

          // Monthly Parent Reports Dispatch Card (Nabeh WhatsApp Gateway)
          Container(
            padding: const EdgeInsets.all(16),
            decoration: BoxDecoration(
              gradient: const LinearGradient(
                colors: [Color(0xFF064E3B), Color(0xFF0F172A)],
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
              ),
              borderRadius: BorderRadius.circular(16),
              border: Border.all(color: const Color(0xFF10B981).withOpacity(0.4)),
            ),
            child: Row(
              children: [
                Container(
                  width: 44,
                  height: 44,
                  decoration: BoxDecoration(
                    color: const Color(0xFF10B981).withOpacity(0.2),
                    shape: BoxShape.circle,
                  ),
                  child: const Icon(CupertinoIcons.chat_bubble_2_fill, color: Color(0xFF34D399), size: 22),
                ),
                const SizedBox(width: 14),
                const Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        'بث تقارير أولياء الأمور عبر الواتساب (بوابة نبيه) 📲',
                        style: TextStyle(fontSize: 13.5, fontWeight: FontWeight.w800, color: Colors.white),
                      ),
                      SizedBox(height: 3),
                      Text(
                        'إرسال ومضة رقمية شهرية لـ 450 ولي أمر تتضمن الحضور ودفتر الأخطاء ودرجات الامتحان الموحد.',
                        style: TextStyle(fontSize: 11, color: Color(0xFF94A3B8), height: 1.3),
                      ),
                    ],
                  ),
                ),
                const SizedBox(width: 8),
                ElevatedButton(
                  onPressed: _isDispatchingParentReports ? null : _dispatchParentReports,
                  style: ElevatedButton.styleFrom(
                    backgroundColor: const Color(0xFF10B981),
                    foregroundColor: Colors.black,
                    padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
                  ),
                  child: _isDispatchingParentReports
                      ? const SizedBox(width: 16, height: 16, child: CircularProgressIndicator(strokeWidth: 2, color: Colors.black))
                      : const Text('بث الدفعة الآن', style: TextStyle(fontSize: 12, fontWeight: FontWeight.w800)),
                ),
              ],
            ),
          ),
          const SizedBox(height: 14),

          // Encrypted School Roster Import Card (AES-256-GCM)
          Container(
            padding: const EdgeInsets.all(16),
            decoration: BoxDecoration(
              color: const Color(0xFF0F172A),
              borderRadius: BorderRadius.circular(16),
              border: Border.all(color: const Color(0xFF1E293B)),
            ),
            child: Row(
              children: [
                Container(
                  width: 44,
                  height: 44,
                  decoration: BoxDecoration(
                    color: const Color(0xFF38BDF8).withOpacity(0.2),
                    shape: BoxShape.circle,
                  ),
                  child: const Icon(CupertinoIcons.lock_shield_fill, color: Color(0xFF38BDF8), size: 22),
                ),
                const SizedBox(width: 14),
                const Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        'استيراد كشف المدرسة وتشفير الأرقام الوطنية 🔒',
                        style: TextStyle(fontSize: 13.5, fontWeight: FontWeight.w800, color: Colors.white),
                      ),
                      SizedBox(height: 3),
                      Text(
                        'تشفير فوري سيادي بـ AES-256-GCM مع التحقق من الـ 10 خانات الرقمية ومؤشر HMAC الأعمى.',
                        style: TextStyle(fontSize: 11, color: Color(0xFF94A3B8), height: 1.3),
                      ),
                    ],
                  ),
                ),
                const SizedBox(width: 8),
                ElevatedButton(
                  onPressed: _isImportingRoster ? null : _importSchoolRoster,
                  style: ElevatedButton.styleFrom(
                    backgroundColor: const Color(0xFF0284C7),
                    foregroundColor: Colors.white,
                    padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 10),
                    shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10)),
                  ),
                  child: _isImportingRoster
                      ? const SizedBox(width: 16, height: 16, child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white))
                      : const Text('استيراد الكشف', style: TextStyle(fontSize: 12, fontWeight: FontWeight.w800)),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildAnomalyTile(
      {required String title, required String status, required bool isGood}) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 8),
      child: Row(
        children: [
          Icon(
            isGood
                ? CupertinoIcons.check_mark_circled_solid
                : CupertinoIcons.exclamationmark_triangle_fill,
            color: isGood ? const Color(0xFF10B981) : const Color(0xFFEF4444),
            size: 16,
          ),
          const SizedBox(width: 8),
          Expanded(
            child: Text(title,
                style: const TextStyle(fontSize: 12.5, color: Colors.white)),
          ),
          Text(
            status,
            style: TextStyle(
              fontSize: 11.5,
              fontWeight: FontWeight.w600,
              color: isGood ? const Color(0xFF34D399) : const Color(0xFFF87171),
            ),
          ),
        ],
      ),
    );
  }

  Widget _metricChip(String label, String value) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      decoration: BoxDecoration(
        color: const Color(0xFF1E293B),
        borderRadius: BorderRadius.circular(6),
      ),
      child: Row(
        children: [
          Text('$label: ',
              style: const TextStyle(fontSize: 11, color: Color(0xFF94A3B8))),
          Text(value,
              style: const TextStyle(
                  fontSize: 11,
                  fontWeight: FontWeight.w700,
                  color: Colors.white)),
        ],
      ),
    );
  }

  String _formatDuration(int seconds) {
    final m = seconds ~/ 60;
    final s = seconds % 60;
    return '${m.toString().padLeft(2, '0')}:${s.toString().padLeft(2, '0')}';
  }
}