import 'package:flutter/material.dart';

import '../theme/reclaim_tokens.dart';

/// Permanent banner shown above all data screens in mock mode.
/// Carries the political-defensibility caveat: this is demo data,
/// not peer-reviewed, not Juristen-approved.
class DemoBanner extends StatelessWidget {
  const DemoBanner({super.key});

  @override
  Widget build(BuildContext context) {
    final t = Theme.of(context).textTheme;
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.symmetric(
        horizontal: ReclaimSpace.lg,
        vertical: ReclaimSpace.sm,
      ),
      decoration: BoxDecoration(
        color: ReclaimColors.tierT4.withValues(alpha: 0.12),
        border: Border(
          bottom: BorderSide(
            color: ReclaimColors.tierT4.withValues(alpha: 0.55),
          ),
        ),
      ),
      child: Row(
        children: [
          const Icon(Icons.science_outlined,
              size: 18, color: ReclaimColors.tierT4),
          const SizedBox(width: ReclaimSpace.sm),
          Expanded(
            child: Text(
              'Demo-Daten — Phase 0, ohne Verbands-Erhebung. '
              'Keine Juristen-Approval, keine Beirats-Validierung. '
              'Alle Werte tragen Tier T4, bis T1/T2-Pipeline läuft.',
              style: t.labelSmall?.copyWith(
                color: ReclaimColors.tierT4,
              ),
            ),
          ),
        ],
      ),
    );
  }
}