import 'package:flutter/material.dart';
import 'package:flutter_animate/flutter_animate.dart';
import '../../theme.dart';
import '../../widgets/s_card.dart';
import '../../widgets/s_button.dart';
import '../../widgets/s_progress_bar.dart';
import '../../model/quiz_state.dart';
import '../../router.dart';
import 's09_concerns.dart';
import '_quiz_nav.dart';

class AgeScreen extends StatefulWidget {
  final QuizState state;
  const AgeScreen({super.key, required this.state});
  @override
  State<AgeScreen> createState() => _State();
}

class _State extends State<AgeScreen> {
  String _selected = '';

  static const _opts = [
    (Icons.star_rounded, 'Under 25', 'Young & preventive care'),
    (Icons.hourglass_bottom_rounded, '25–35', 'Early anti-aging focus'),
    (Icons.wb_sunny_rounded, '35–45', 'Targeted treatments'),
    (Icons.nightlight_round, '45–60', 'Deep renewal & firming'),
    (Icons.diamond_rounded, '60+', 'Intensive care & radiance'),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: SColors.bgSurface,
      body: SafeArea(
        child: Column(
          children: [
            QuizNav(step: 3, total: 7, onBack: () => Navigator.of(context).pop()),
            const SizedBox(height: 10),
            Padding(padding: const EdgeInsets.symmetric(horizontal: 16), child: SProgressBar(value: 3 / 7)),
            Expanded(
              child: SingleChildScrollView(
                padding: const EdgeInsets.fromLTRB(16, 24, 16, 0),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Padding(
                      padding: const EdgeInsets.symmetric(horizontal: 8),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text('How old\nare you?', style: SText.headline2(SColors.textHead))
                              .animate().fadeIn(duration: 350.ms),
                          const SizedBox(height: 6),
                          Text('Skin changes with age — helps us tailor advice.', style: SText.subtitle(SColors.textSub))
                              .animate().fadeIn(duration: 350.ms, delay: 80.ms),
                          const SizedBox(height: 20),
                        ],
                      ),
                    ),
                    ..._opts.asMap().entries.map((e) {
                      final i = e.key; final (icon, label, sub) = e.value;
                      return Padding(
                        padding: const EdgeInsets.only(bottom: 8),
                        child: SCard(
                          icon: icon, label: label, sub: sub,
                          isSelected: _selected == label,
                          onTap: () => setState(() => _selected = label),
                        ).animate().fadeIn(duration: 280.ms, delay: (100 + i * 55).ms)
                         .slideX(begin: 0.03, end: 0, duration: 280.ms),
                      );
                    }),
                  ],
                ),
              ),
            ),
            Padding(
              padding: const EdgeInsets.fromLTRB(16, 12, 16, 20),
              child: SButton(
                label: 'CONTINUE',
                enabled: _selected.isNotEmpty,
                onTap: _selected.isNotEmpty ? () {
                  widget.state.age = _selected;
                  Navigator.of(context).push(slideRoute(ConcernsScreen(state: widget.state)));
                } : null,
              ),
            ),
          ],
        ),
      ),
    );
  }
}