'use client';

import { useState, useEffect } from 'react';
import { useParams, useRouter } from 'next/navigation';
import Link from 'next/link';
import { useLanguage } from '@/context/LanguageContext';
import { eventsApi, ticketsApi, emailsApi, paymentOptionsApi, Event, Ticket, EmailTemplate, PaymentOptionsConfig } from '@/lib/api';
import Card from '@/components/ui/Card';
import Button from '@/components/ui/Button';
import {
  ArrowLeftIcon,
  CalendarIcon,
  MapPinIcon,
  CurrencyDollarIcon,
  UsersIcon,
  TicketIcon,
  CheckCircleIcon,
  ClockIcon,
  XCircleIcon,
  EnvelopeIcon,
  PencilIcon,
  EyeIcon,
  PaperAirplaneIcon,
  UserGroupIcon,
  MagnifyingGlassIcon,
  FunnelIcon,
  PlusIcon,
  ChatBubbleLeftIcon,
  ArrowUturnLeftIcon,
  XMarkIcon,
  CreditCardIcon,
  BanknotesIcon,
  BoltIcon,
  BuildingLibraryIcon,
  ArrowPathIcon,
} from '@heroicons/react/24/outline';
import toast from 'react-hot-toast';
import clsx from 'clsx';

type TabType = 'overview' | 'attendees' | 'tickets' | 'email' | 'payments';

export default function AdminEventDetailPage() {
  const params = useParams();
  const router = useRouter();
  const eventId = params.id as string;
  const { t, locale } = useLanguage();
  
  const [loading, setLoading] = useState(true);
  const [event, setEvent] = useState<Event | null>(null);
  const [tickets, setTickets] = useState<Ticket[]>([]);
  const [activeTab, setActiveTab] = useState<TabType>('overview');
  
  // Email state
  const [templates, setTemplates] = useState<EmailTemplate[]>([]);
  const [selectedTemplate, setSelectedTemplate] = useState<string>('');
  const [recipientFilter, setRecipientFilter] = useState<'all' | 'confirmed' | 'pending' | 'checked_in'>('confirmed');
  const [customMessage, setCustomMessage] = useState('');
  const [sending, setSending] = useState(false);
  const [previewHtml, setPreviewHtml] = useState<string | null>(null);
  
  // Attendees tab state
  const [searchQuery, setSearchQuery] = useState('');
  const [statusFilter, setStatusFilter] = useState<'all' | 'pending' | 'confirmed' | 'checked_in' | 'cancelled'>('all');
  const [showAddAtDoorModal, setShowAddAtDoorModal] = useState(false);
  const [showManualTicketModal, setShowManualTicketModal] = useState(false);
  const [showNoteModal, setShowNoteModal] = useState(false);
  const [selectedTicket, setSelectedTicket] = useState<Ticket | null>(null);
  const [noteText, setNoteText] = useState('');
  const [addAtDoorForm, setAddAtDoorForm] = useState({
    firstName: '',
    lastName: '',
    email: '',
    phone: '',
    autoCheckin: true,
    adminNote: '',
  });
  const [manualTicketForm, setManualTicketForm] = useState({
    firstName: '',
    lastName: '',
    email: '',
    phone: '',
    adminNote: '',
  });
  const [submitting, setSubmitting] = useState(false);
  
  // Tickets tab state
  const [ticketSearchQuery, setTicketSearchQuery] = useState('');
  const [ticketStatusFilter, setTicketStatusFilter] = useState<'all' | 'confirmed' | 'checked_in'>('all');
  
  // Payment options state
  const [globalPaymentOptions, setGlobalPaymentOptions] = useState<PaymentOptionsConfig | null>(null);
  const [paymentOverrides, setPaymentOverrides] = useState<Partial<PaymentOptionsConfig>>({});
  const [hasPaymentOverrides, setHasPaymentOverrides] = useState(false);
  const [savingPayments, setSavingPayments] = useState(false);
  const [loadingPayments, setLoadingPayments] = useState(false);

  useEffect(() => {
    loadEventData();
  }, [eventId]);

  const loadEventData = async () => {
    try {
      const [eventRes, ticketsRes, templatesRes] = await Promise.all([
        eventsApi.getById(eventId),
        ticketsApi.getAll({ eventId }),
        emailsApi.getTemplates(),
      ]);
      setEvent(eventRes.event);
      setTickets(ticketsRes.tickets);
      setTemplates(templatesRes.templates.filter(t => t.isActive));
    } catch (error) {
      toast.error('Failed to load event data');
    } finally {
      setLoading(false);
    }
  };

  const loadPaymentOptions = async () => {
    if (globalPaymentOptions) return; // Already loaded
    setLoadingPayments(true);
    try {
      const [globalRes, overridesRes] = await Promise.all([
        paymentOptionsApi.getGlobal(),
        paymentOptionsApi.getEventOverrides(eventId),
      ]);
      setGlobalPaymentOptions(globalRes.paymentOptions);
      if (overridesRes.overrides) {
        setPaymentOverrides(overridesRes.overrides);
        setHasPaymentOverrides(true);
      }
    } catch (error) {
      toast.error('Failed to load payment options');
    } finally {
      setLoadingPayments(false);
    }
  };

  // Load payment options when switching to payments tab
  useEffect(() => {
    if (activeTab === 'payments') {
      loadPaymentOptions();
    }
  }, [activeTab]);

  const getEffectivePaymentOption = <K extends keyof PaymentOptionsConfig>(key: K): PaymentOptionsConfig[K] => {
    if (paymentOverrides[key] !== undefined && paymentOverrides[key] !== null) {
      return paymentOverrides[key] as PaymentOptionsConfig[K];
    }
    return globalPaymentOptions?.[key] as PaymentOptionsConfig[K];
  };

  const updatePaymentOverride = <K extends keyof PaymentOptionsConfig>(
    key: K,
    value: PaymentOptionsConfig[K] | null
  ) => {
    setPaymentOverrides((prev) => ({ ...prev, [key]: value }));
    setHasPaymentOverrides(true);
  };

  const handleSavePaymentOptions = async () => {
    setSavingPayments(true);
    try {
      await paymentOptionsApi.updateEventOverrides(eventId, paymentOverrides);
      toast.success(locale === 'es' ? 'Opciones de pago guardadas' : 'Payment options saved');
    } catch (error: any) {
      toast.error(error.message || 'Failed to save payment options');
    } finally {
      setSavingPayments(false);
    }
  };

  const handleResetToGlobal = async () => {
    if (!confirm(locale === 'es' 
      ? '¿Resetear a la configuración global? Se eliminarán todas las personalizaciones de este evento.'
      : 'Reset to global settings? This will remove all customizations for this event.')) {
      return;
    }
    setSavingPayments(true);
    try {
      await paymentOptionsApi.deleteEventOverrides(eventId);
      setPaymentOverrides({});
      setHasPaymentOverrides(false);
      toast.success(locale === 'es' ? 'Restablecido a configuración global' : 'Reset to global settings');
    } catch (error: any) {
      toast.error(error.message || 'Failed to reset payment options');
    } finally {
      setSavingPayments(false);
    }
  };

  const formatDate = (dateStr: string) => {
    return new Date(dateStr).toLocaleDateString(locale === 'es' ? 'es-ES' : 'en-US', {
      weekday: 'long',
      year: 'numeric',
      month: 'long',
      day: 'numeric',
    });
  };

  const formatTime = (dateStr: string) => {
    return new Date(dateStr).toLocaleTimeString(locale === 'es' ? 'es-ES' : 'en-US', {
      hour: '2-digit',
      minute: '2-digit',
    });
  };

  const formatCurrency = (amount: number, currency: string) => {
    if (currency === 'PYG') {
      return `${amount.toLocaleString('es-PY')} PYG`;
    }
    return `$${amount.toFixed(2)} ${currency}`;
  };

  const getTicketsByStatus = (status: string) => {
    return tickets.filter(t => t.status === status);
  };

  const getFilteredRecipientCount = () => {
    if (recipientFilter === 'all') return tickets.length;
    return getTicketsByStatus(recipientFilter).length;
  };

  const getStatusBadge = (status: string) => {
    const styles: Record<string, string> = {
      pending: 'bg-yellow-100 text-yellow-800',
      confirmed: 'bg-green-100 text-green-800',
      cancelled: 'bg-red-100 text-red-800',
      checked_in: 'bg-blue-100 text-blue-800',
    };
    return (
      <span className={`px-2 py-1 text-xs rounded-full ${styles[status] || 'bg-gray-100 text-gray-800'}`}>
        {status.replace('_', ' ')}
      </span>
    );
  };

  const handleMarkPaid = async (ticketId: string) => {
    try {
      await ticketsApi.markPaid(ticketId);
      toast.success('Payment marked as received');
      loadEventData();
    } catch (error: any) {
      toast.error(error.message || 'Failed to mark payment');
    }
  };

  const handleCheckin = async (ticketId: string) => {
    try {
      await ticketsApi.checkin(ticketId);
      toast.success('Attendee checked in');
      loadEventData();
    } catch (error: any) {
      toast.error(error.message || 'Failed to check in');
    }
  };

  const handleRemoveCheckin = async (ticketId: string) => {
    if (!confirm('Are you sure you want to remove the check-in for this attendee?')) return;
    try {
      await ticketsApi.removeCheckin(ticketId);
      toast.success('Check-in removed');
      loadEventData();
    } catch (error: any) {
      toast.error(error.message || 'Failed to remove check-in');
    }
  };

  const handleOpenNoteModal = (ticket: Ticket) => {
    setSelectedTicket(ticket);
    setNoteText(ticket.adminNote || '');
    setShowNoteModal(true);
  };

  const handleSaveNote = async () => {
    if (!selectedTicket) return;
    setSubmitting(true);
    try {
      await ticketsApi.updateNote(selectedTicket.id, noteText);
      toast.success('Note saved');
      setShowNoteModal(false);
      setSelectedTicket(null);
      setNoteText('');
      loadEventData();
    } catch (error: any) {
      toast.error(error.message || 'Failed to save note');
    } finally {
      setSubmitting(false);
    }
  };

  const handleAddAtDoor = async (e: React.FormEvent) => {
    e.preventDefault();
    if (!event) return;
    setSubmitting(true);
    try {
      await ticketsApi.adminCreate({
        eventId: event.id,
        firstName: addAtDoorForm.firstName,
        lastName: addAtDoorForm.lastName || undefined,
        email: addAtDoorForm.email,
        phone: addAtDoorForm.phone,
        autoCheckin: addAtDoorForm.autoCheckin,
        adminNote: addAtDoorForm.adminNote || undefined,
      });
      toast.success(addAtDoorForm.autoCheckin ? 'Attendee added and checked in' : 'Attendee added');
      setShowAddAtDoorModal(false);
      setAddAtDoorForm({ firstName: '', lastName: '', email: '', phone: '', autoCheckin: true, adminNote: '' });
      loadEventData();
    } catch (error: any) {
      toast.error(error.message || 'Failed to add attendee');
    } finally {
      setSubmitting(false);
    }
  };

  const handleManualTicket = async (e: React.FormEvent) => {
    e.preventDefault();
    if (!event) return;
    setSubmitting(true);
    try {
      await ticketsApi.manualCreate({
        eventId: event.id,
        firstName: manualTicketForm.firstName,
        lastName: manualTicketForm.lastName || undefined,
        email: manualTicketForm.email,
        phone: manualTicketForm.phone || undefined,
        adminNote: manualTicketForm.adminNote || undefined,
      });
      toast.success('Manual ticket created — confirmation email sent');
      setShowManualTicketModal(false);
      setManualTicketForm({ firstName: '', lastName: '', email: '', phone: '', adminNote: '' });
      loadEventData();
    } catch (error: any) {
      toast.error(error.message || 'Failed to create manual ticket');
    } finally {
      setSubmitting(false);
    }
  };

  // Filtered tickets for attendees tab
  const filteredTickets = tickets.filter((ticket) => {
    // Status filter
    if (statusFilter !== 'all' && ticket.status !== statusFilter) {
      return false;
    }
    // Search filter
    if (searchQuery) {
      const query = searchQuery.toLowerCase();
      const fullName = `${ticket.attendeeFirstName} ${ticket.attendeeLastName || ''}`.trim().toLowerCase();
      return (
        fullName.includes(query) ||
        (ticket.attendeeEmail?.toLowerCase().includes(query) || false) ||
        (ticket.attendeePhone?.toLowerCase().includes(query) || false) ||
        ticket.id.toLowerCase().includes(query)
      );
    }
    return true;
  });

  // Filtered tickets for the Tickets tab (only confirmed/checked_in)
  const confirmedTickets = tickets.filter(t => ['confirmed', 'checked_in'].includes(t.status));
  const filteredConfirmedTickets = confirmedTickets.filter((ticket) => {
    // Status filter
    if (ticketStatusFilter !== 'all' && ticket.status !== ticketStatusFilter) {
      return false;
    }
    // Search filter
    if (ticketSearchQuery) {
      const query = ticketSearchQuery.toLowerCase();
      const fullName = `${ticket.attendeeFirstName} ${ticket.attendeeLastName || ''}`.trim().toLowerCase();
      return (
        fullName.includes(query) ||
        ticket.id.toLowerCase().includes(query)
      );
    }
    return true;
  });

  const handlePreviewEmail = async () => {
    if (!selectedTemplate) {
      toast.error('Please select a template');
      return;
    }

    try {
      const res = await emailsApi.preview({
        templateSlug: selectedTemplate,
        variables: {
          attendeeName: 'John Doe',
          attendeeEmail: 'john@example.com',
          ticketId: 'TKT-PREVIEW',
          eventTitle: event?.title || '',
          eventDate: event ? formatDate(event.startDatetime) : '',
          eventTime: event ? formatTime(event.startDatetime) : '',
          eventLocation: event?.location || '',
          eventLocationUrl: event?.locationUrl || '',
          eventPrice: event ? formatCurrency(event.price, event.currency) : '',
          customMessage: customMessage || 'Your custom message will appear here.',
        },
        locale,
      });
      setPreviewHtml(res.bodyHtml);
    } catch (error) {
      toast.error('Failed to preview email');
    }
  };

  const handleSendEmail = async () => {
    if (!selectedTemplate) {
      toast.error('Please select a template');
      return;
    }

    const recipientCount = getFilteredRecipientCount();
    if (recipientCount === 0) {
      toast.error('No recipients match the selected filter');
      return;
    }

    if (!confirm(`Send email to ${recipientCount} ${recipientFilter === 'all' ? 'attendee(s)' : `${recipientFilter} attendee(s)`}?`)) {
      return;
    }

    setSending(true);
    try {
      const res = await emailsApi.sendToEvent(eventId, {
        templateSlug: selectedTemplate,
        recipientFilter,
        customVariables: customMessage ? { customMessage } : undefined,
      });

      if (res.success) {
        toast.success(`Email sent to ${res.sentCount} recipients`);
      } else {
        toast.error(`Sent: ${res.sentCount}, Failed: ${res.failedCount}`);
      }
    } catch (error: any) {
      toast.error(error.message || 'Failed to send emails');
    } finally {
      setSending(false);
    }
  };

  if (loading) {
    return (
      <div className="flex items-center justify-center py-12">
        <div className="animate-spin w-8 h-8 border-4 border-primary-yellow border-t-transparent rounded-full" />
      </div>
    );
  }

  if (!event) {
    return (
      <div className="text-center py-12">
        <p className="text-gray-500">Event not found</p>
        <Link href="/admin/events">
          <Button variant="outline" className="mt-4">
            Back to Events
          </Button>
        </Link>
      </div>
    );
  }

  const confirmedCount = getTicketsByStatus('confirmed').length;
  const pendingCount = getTicketsByStatus('pending').length;
  const checkedInCount = getTicketsByStatus('checked_in').length;
  const cancelledCount = getTicketsByStatus('cancelled').length;

  return (
    <div>
      {/* Header */}
      <div className="flex items-center gap-4 mb-6">
        <Link href="/admin/events">
          <button className="p-2 hover:bg-gray-100 rounded-btn">
            <ArrowLeftIcon className="w-5 h-5" />
          </button>
        </Link>
        <div className="flex-1">
          <h1 className="text-2xl font-bold text-primary-dark">{event.title}</h1>
          <p className="text-gray-500">{formatDate(event.startDatetime)}</p>
        </div>
        <div className="flex items-center gap-2">
          <Link href={`/events/${event.id}`} target="_blank">
            <Button variant="outline" size="sm">
              <EyeIcon className="w-4 h-4 mr-2" />
              View Public
            </Button>
          </Link>
          <Link href={`/admin/events?edit=${event.id}`}>
            <Button variant="outline" size="sm">
              <PencilIcon className="w-4 h-4 mr-2" />
              Edit
            </Button>
          </Link>
        </div>
      </div>

      {/* Stats Cards */}
      <div className="grid grid-cols-2 md:grid-cols-5 gap-4 mb-6">
        <Card className="p-4">
          <div className="flex items-center gap-3">
            <div className="w-10 h-10 bg-blue-100 rounded-full flex items-center justify-center">
              <UsersIcon className="w-5 h-5 text-blue-600" />
            </div>
            <div>
              <p className="text-2xl font-bold">{event.capacity}</p>
              <p className="text-sm text-gray-500">Capacity</p>
            </div>
          </div>
        </Card>
        <Card className="p-4">
          <div className="flex items-center gap-3">
            <div className="w-10 h-10 bg-green-100 rounded-full flex items-center justify-center">
              <CheckCircleIcon className="w-5 h-5 text-green-600" />
            </div>
            <div>
              <p className="text-2xl font-bold">{confirmedCount}</p>
              <p className="text-sm text-gray-500">Confirmed</p>
            </div>
          </div>
        </Card>
        <Card className="p-4">
          <div className="flex items-center gap-3">
            <div className="w-10 h-10 bg-yellow-100 rounded-full flex items-center justify-center">
              <ClockIcon className="w-5 h-5 text-yellow-600" />
            </div>
            <div>
              <p className="text-2xl font-bold">{pendingCount}</p>
              <p className="text-sm text-gray-500">Pending</p>
            </div>
          </div>
        </Card>
        <Card className="p-4">
          <div className="flex items-center gap-3">
            <div className="w-10 h-10 bg-purple-100 rounded-full flex items-center justify-center">
              <TicketIcon className="w-5 h-5 text-purple-600" />
            </div>
            <div>
              <p className="text-2xl font-bold">{checkedInCount}</p>
              <p className="text-sm text-gray-500">Checked In</p>
            </div>
          </div>
        </Card>
        <Card className="p-4">
          <div className="flex items-center gap-3">
            <div className="w-10 h-10 bg-gray-100 rounded-full flex items-center justify-center">
              <CurrencyDollarIcon className="w-5 h-5 text-gray-600" />
            </div>
            <div>
              <p className="text-2xl font-bold">{formatCurrency(confirmedCount * event.price, event.currency)}</p>
              <p className="text-sm text-gray-500">Revenue</p>
            </div>
          </div>
        </Card>
      </div>

      {/* Tabs */}
      <div className="border-b border-secondary-light-gray mb-6">
        <nav className="flex gap-6">
          {(['overview', 'attendees', 'tickets', 'email', 'payments'] as TabType[]).map((tab) => (
            <button
              key={tab}
              onClick={() => setActiveTab(tab)}
              className={clsx(
                'py-3 px-1 border-b-2 font-medium text-sm transition-colors flex items-center gap-2',
                {
                  'border-primary-yellow text-primary-dark': activeTab === tab,
                  'border-transparent text-gray-500 hover:text-gray-700': activeTab !== tab,
                }
              )}
            >
              {tab === 'overview' && <CalendarIcon className="w-4 h-4" />}
              {tab === 'attendees' && <UserGroupIcon className="w-4 h-4" />}
              {tab === 'tickets' && <TicketIcon className="w-4 h-4" />}
              {tab === 'email' && <EnvelopeIcon className="w-4 h-4" />}
              {tab === 'payments' && <CreditCardIcon className="w-4 h-4" />}
              {tab === 'overview' ? 'Overview' : tab === 'attendees' ? `Attendees (${tickets.length})` : tab === 'tickets' ? `Tickets (${confirmedTickets.length})` : tab === 'email' ? 'Send Email' : (locale === 'es' ? 'Pagos' : 'Payments')}
            </button>
          ))}
        </nav>
      </div>

      {/* Overview Tab */}
      {activeTab === 'overview' && (
        <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
          <Card className="p-6">
            <h3 className="font-semibold text-lg mb-4">Event Information</h3>
            <div className="space-y-4">
              <div className="flex items-start gap-3">
                <CalendarIcon className="w-5 h-5 text-gray-400 mt-0.5" />
                <div>
                  <p className="font-medium">Date & Time</p>
                  <p className="text-gray-600">{formatDate(event.startDatetime)}</p>
                  <p className="text-gray-600">{formatTime(event.startDatetime)}{event.endDatetime && ` - ${formatTime(event.endDatetime)}`}</p>
                </div>
              </div>
              <div className="flex items-start gap-3">
                <MapPinIcon className="w-5 h-5 text-gray-400 mt-0.5" />
                <div>
                  <p className="font-medium">Location</p>
                  <p className="text-gray-600">{event.location}</p>
                  {event.locationUrl && (
                    <a href={event.locationUrl} target="_blank" rel="noopener" className="text-blue-600 text-sm hover:underline">
                      View on Map
                    </a>
                  )}
                </div>
              </div>
              <div className="flex items-start gap-3">
                <CurrencyDollarIcon className="w-5 h-5 text-gray-400 mt-0.5" />
                <div>
                  <p className="font-medium">Price</p>
                  <p className="text-gray-600">{event.price === 0 ? 'Free' : formatCurrency(event.price, event.currency)}</p>
                </div>
              </div>
              <div className="flex items-start gap-3">
                <UsersIcon className="w-5 h-5 text-gray-400 mt-0.5" />
                <div>
                  <p className="font-medium">Capacity</p>
                  <p className="text-gray-600">{confirmedCount + checkedInCount} / {event.capacity} spots filled</p>
                  <p className="text-sm text-gray-500">{Math.max(0, event.capacity - confirmedCount - checkedInCount)} spots remaining</p>
                </div>
              </div>
            </div>
          </Card>

          <Card className="p-6">
            <h3 className="font-semibold text-lg mb-4">Description</h3>
            <div className="prose prose-sm max-w-none">
              <p className="text-gray-600 whitespace-pre-wrap">{event.description}</p>
              {event.descriptionEs && (
                <>
                  <p className="font-medium mt-4">Spanish:</p>
                  <p className="text-gray-600 whitespace-pre-wrap">{event.descriptionEs}</p>
                </>
              )}
            </div>
          </Card>

          {event.bannerUrl && (
            <Card className="p-6 lg:col-span-2">
              <h3 className="font-semibold text-lg mb-4">Event Banner</h3>
              <img 
                src={event.bannerUrl} 
                alt={event.title}
                className="w-full max-h-64 object-cover rounded-lg"
              />
            </Card>
          )}
        </div>
      )}

      {/* Attendees Tab */}
      {activeTab === 'attendees' && (
        <div className="space-y-4">
          {/* Filters & Actions Bar */}
          <Card className="p-4">
            <div className="flex flex-col sm:flex-row gap-4 items-start sm:items-center justify-between">
              <div className="flex flex-col sm:flex-row gap-3 flex-1 w-full sm:w-auto">
                {/* Search */}
                <div className="relative flex-1 max-w-md">
                  <MagnifyingGlassIcon className="w-5 h-5 absolute left-3 top-1/2 -translate-y-1/2 text-gray-400" />
                  <input
                    type="text"
                    placeholder="Search by name, email, phone..."
                    value={searchQuery}
                    onChange={(e) => setSearchQuery(e.target.value)}
                    className="w-full pl-10 pr-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  />
                </div>
                {/* Status Filter */}
                <div className="flex items-center gap-2">
                  <FunnelIcon className="w-5 h-5 text-gray-400" />
                  <select
                    value={statusFilter}
                    onChange={(e) => setStatusFilter(e.target.value as any)}
                    className="px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  >
                    <option value="all">All Status ({tickets.length})</option>
                    <option value="pending">Pending ({getTicketsByStatus('pending').length})</option>
                    <option value="confirmed">Confirmed ({getTicketsByStatus('confirmed').length})</option>
                    <option value="checked_in">Checked In ({getTicketsByStatus('checked_in').length})</option>
                    <option value="cancelled">Cancelled ({getTicketsByStatus('cancelled').length})</option>
                  </select>
                </div>
              </div>
              {/* Action Buttons */}
              <div className="flex items-center gap-2">
                <Button variant="outline" onClick={() => setShowManualTicketModal(true)}>
                  <EnvelopeIcon className="w-4 h-4 mr-2" />
                  Manual Ticket
                </Button>
                <Button onClick={() => setShowAddAtDoorModal(true)}>
                  <PlusIcon className="w-4 h-4 mr-2" />
                  Add at Door
                </Button>
              </div>
            </div>
            {/* Filter Results Summary */}
            {(searchQuery || statusFilter !== 'all') && (
              <div className="mt-3 text-sm text-gray-500 flex items-center gap-2">
                <span>Showing {filteredTickets.length} of {tickets.length} attendees</span>
                {(searchQuery || statusFilter !== 'all') && (
                  <button
                    onClick={() => { setSearchQuery(''); setStatusFilter('all'); }}
                    className="text-primary-yellow hover:underline"
                  >
                    Clear filters
                  </button>
                )}
              </div>
            )}
          </Card>

          {/* Attendees Table */}
          <Card className="overflow-hidden">
            <div className="overflow-x-auto">
              <table className="w-full">
                <thead className="bg-secondary-gray">
                  <tr>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Attendee</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Contact</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Status</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Note</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Booked</th>
                    <th className="text-right px-6 py-3 text-sm font-medium text-gray-600">Actions</th>
                  </tr>
                </thead>
                <tbody className="divide-y divide-secondary-light-gray">
                  {filteredTickets.length === 0 ? (
                    <tr>
                      <td colSpan={6} className="px-6 py-12 text-center text-gray-500">
                        {tickets.length === 0 ? 'No attendees yet' : 'No attendees match the current filters'}
                      </td>
                    </tr>
                  ) : (
                    filteredTickets.map((ticket) => (
                      <tr key={ticket.id} className="hover:bg-gray-50">
                        <td className="px-6 py-4">
                          <p className="font-medium">{ticket.attendeeFirstName} {ticket.attendeeLastName || ''}</p>
                          <p className="text-sm text-gray-500">ID: {ticket.id.slice(0, 8)}...</p>
                          {ticket.bookingId && (
                            <p className="text-xs text-purple-600 mt-1" title={`Booking: ${ticket.bookingId}`}>
                              📦 {locale === 'es' ? 'Reserva grupal' : 'Group booking'}
                            </p>
                          )}
                        </td>
                        <td className="px-6 py-4">
                          <p className="text-sm">{ticket.attendeeEmail}</p>
                          <p className="text-sm text-gray-500">{ticket.attendeePhone}</p>
                        </td>
                        <td className="px-6 py-4">
                          {getStatusBadge(ticket.status)}
                          {ticket.checkinAt && (
                            <p className="text-xs text-gray-400 mt-1">
                              {new Date(ticket.checkinAt).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
                            </p>
                          )}
                        </td>
                        <td className="px-6 py-4">
                          {ticket.adminNote ? (
                            <p className="text-sm text-gray-600 max-w-[200px] truncate" title={ticket.adminNote}>
                              {ticket.adminNote}
                            </p>
                          ) : (
                            <span className="text-sm text-gray-400">-</span>
                          )}
                        </td>
                        <td className="px-6 py-4 text-sm text-gray-600">
                          {new Date(ticket.createdAt).toLocaleDateString()}
                        </td>
                        <td className="px-6 py-4">
                          <div className="flex items-center justify-end gap-2">
                            {/* Note button */}
                            <button
                              onClick={() => handleOpenNoteModal(ticket)}
                              className="p-2 hover:bg-gray-100 rounded-btn text-gray-500 hover:text-gray-700"
                              title="Add/Edit Note"
                            >
                              <ChatBubbleLeftIcon className="w-4 h-4" />
                            </button>
                            
                            {ticket.status === 'pending' && (
                              <Button
                                size="sm"
                                variant="outline"
                                onClick={() => handleMarkPaid(ticket.id)}
                              >
                                Mark Paid
                              </Button>
                            )}
                            {ticket.status === 'confirmed' && (
                              <Button
                                size="sm"
                                onClick={() => handleCheckin(ticket.id)}
                              >
                                Check In
                              </Button>
                            )}
                            {ticket.status === 'checked_in' && (
                              <Button
                                size="sm"
                                variant="outline"
                                onClick={() => handleRemoveCheckin(ticket.id)}
                              >
                                <ArrowUturnLeftIcon className="w-4 h-4 mr-1" />
                                Undo
                              </Button>
                            )}
                          </div>
                        </td>
                      </tr>
                    ))
                  )}
                </tbody>
              </table>
            </div>
          </Card>
        </div>
      )}

      {/* Tickets Tab */}
      {activeTab === 'tickets' && (
        <div className="space-y-4">
          {/* Search & Filter Bar */}
          <Card className="p-4">
            <div className="flex flex-col sm:flex-row gap-4 items-start sm:items-center justify-between">
              <div className="flex flex-col sm:flex-row gap-3 flex-1 w-full sm:w-auto">
                {/* Search */}
                <div className="relative flex-1 max-w-md">
                  <MagnifyingGlassIcon className="w-5 h-5 absolute left-3 top-1/2 -translate-y-1/2 text-gray-400" />
                  <input
                    type="text"
                    placeholder="Search by name or ticket ID..."
                    value={ticketSearchQuery}
                    onChange={(e) => setTicketSearchQuery(e.target.value)}
                    className="w-full pl-10 pr-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  />
                </div>
                {/* Status Filter */}
                <div className="flex items-center gap-2">
                  <FunnelIcon className="w-5 h-5 text-gray-400" />
                  <select
                    value={ticketStatusFilter}
                    onChange={(e) => setTicketStatusFilter(e.target.value as any)}
                    className="px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  >
                    <option value="all">All ({confirmedTickets.length})</option>
                    <option value="confirmed">Valid ({getTicketsByStatus('confirmed').length})</option>
                    <option value="checked_in">Checked In ({getTicketsByStatus('checked_in').length})</option>
                  </select>
                </div>
              </div>
            </div>
            {(ticketSearchQuery || ticketStatusFilter !== 'all') && (
              <div className="mt-3 text-sm text-gray-500 flex items-center gap-2">
                <span>Showing {filteredConfirmedTickets.length} of {confirmedTickets.length} tickets</span>
                <button
                  onClick={() => { setTicketSearchQuery(''); setTicketStatusFilter('all'); }}
                  className="text-primary-yellow hover:underline"
                >
                  Clear filters
                </button>
              </div>
            )}
          </Card>

          {/* Tickets Table */}
          <Card className="overflow-hidden">
            <div className="overflow-x-auto">
              <table className="w-full">
                <thead className="bg-secondary-gray">
                  <tr>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Attendee Name</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Ticket ID</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Booking ID</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Status</th>
                    <th className="text-left px-6 py-3 text-sm font-medium text-gray-600">Check-in Time</th>
                    <th className="text-right px-6 py-3 text-sm font-medium text-gray-600">Actions</th>
                  </tr>
                </thead>
                <tbody className="divide-y divide-secondary-light-gray">
                  {filteredConfirmedTickets.length === 0 ? (
                    <tr>
                      <td colSpan={6} className="px-6 py-12 text-center text-gray-500">
                        {confirmedTickets.length === 0 ? 'No confirmed tickets yet' : 'No tickets match the current filters'}
                      </td>
                    </tr>
                  ) : (
                    filteredConfirmedTickets.map((ticket) => (
                      <tr key={ticket.id} className="hover:bg-gray-50">
                        <td className="px-6 py-4">
                          <p className="font-medium">
                            {ticket.attendeeFirstName} {ticket.attendeeLastName || ''}
                          </p>
                        </td>
                        <td className="px-6 py-4">
                          <code className="text-sm bg-gray-100 px-2 py-1 rounded" title={ticket.id}>
                            {ticket.id.slice(0, 8)}...
                          </code>
                        </td>
                        <td className="px-6 py-4">
                          {ticket.bookingId ? (
                            <code className="text-sm bg-purple-50 text-purple-700 px-2 py-1 rounded" title={ticket.bookingId}>
                              {ticket.bookingId.slice(0, 8)}...
                            </code>
                          ) : (
                            <span className="text-sm text-gray-400">—</span>
                          )}
                        </td>
                        <td className="px-6 py-4">
                          {ticket.status === 'confirmed' ? (
                            <span className="px-2 py-1 text-xs rounded-full bg-green-100 text-green-800">
                              Valid
                            </span>
                          ) : (
                            <span className="px-2 py-1 text-xs rounded-full bg-blue-100 text-blue-800">
                              Checked In
                            </span>
                          )}
                        </td>
                        <td className="px-6 py-4 text-sm text-gray-600">
                          {ticket.checkinAt ? (
                            new Date(ticket.checkinAt).toLocaleString(locale === 'es' ? 'es-ES' : 'en-US', {
                              month: 'short',
                              day: 'numeric',
                              hour: '2-digit',
                              minute: '2-digit',
                            })
                          ) : (
                            <span className="text-gray-400">—</span>
                          )}
                        </td>
                        <td className="px-6 py-4">
                          <div className="flex items-center justify-end gap-2">
                            {ticket.status === 'confirmed' && (
                              <Button
                                size="sm"
                                onClick={() => handleCheckin(ticket.id)}
                              >
                                Check In
                              </Button>
                            )}
                            {ticket.status === 'checked_in' && (
                              <Button
                                size="sm"
                                variant="outline"
                                onClick={() => handleRemoveCheckin(ticket.id)}
                              >
                                <ArrowUturnLeftIcon className="w-4 h-4 mr-1" />
                                Undo
                              </Button>
                            )}
                          </div>
                        </td>
                      </tr>
                    ))
                  )}
                </tbody>
              </table>
            </div>
          </Card>
        </div>
      )}

      {/* Add at Door Modal */}
      {showAddAtDoorModal && (
        <div className="fixed inset-0 bg-black/50 z-50 flex items-center justify-center p-4">
          <Card className="w-full max-w-md">
            <div className="flex items-center justify-between p-4 border-b border-secondary-light-gray">
              <h2 className="text-lg font-bold">Add Attendee at Door</h2>
              <button
                onClick={() => setShowAddAtDoorModal(false)}
                className="p-2 hover:bg-gray-100 rounded-btn"
              >
                <XMarkIcon className="w-5 h-5" />
              </button>
            </div>
            <form onSubmit={handleAddAtDoor} className="p-4 space-y-4">
              <div className="grid grid-cols-2 gap-3">
                <div>
                  <label className="block text-sm font-medium mb-1">First Name *</label>
                  <input
                    type="text"
                    required
                    value={addAtDoorForm.firstName}
                    onChange={(e) => setAddAtDoorForm({ ...addAtDoorForm, firstName: e.target.value })}
                    className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                    placeholder="First name"
                  />
                </div>
                <div>
                  <label className="block text-sm font-medium mb-1">Last Name (optional)</label>
                  <input
                    type="text"
                    value={addAtDoorForm.lastName}
                    onChange={(e) => setAddAtDoorForm({ ...addAtDoorForm, lastName: e.target.value })}
                    className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                    placeholder="Last name"
                  />
                </div>
              </div>
              <div>
                <label className="block text-sm font-medium mb-1">Email (optional)</label>
                <input
                  type="email"
                  value={addAtDoorForm.email}
                  onChange={(e) => setAddAtDoorForm({ ...addAtDoorForm, email: e.target.value })}
                  className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  placeholder="email@example.com"
                />
              </div>
              <div>
                <label className="block text-sm font-medium mb-1">Phone (optional)</label>
                <input
                  type="tel"
                  value={addAtDoorForm.phone}
                  onChange={(e) => setAddAtDoorForm({ ...addAtDoorForm, phone: e.target.value })}
                  className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  placeholder="+595 981 123456"
                />
              </div>
              <div>
                <label className="block text-sm font-medium mb-1">Admin Note (optional)</label>
                <textarea
                  value={addAtDoorForm.adminNote}
                  onChange={(e) => setAddAtDoorForm({ ...addAtDoorForm, adminNote: e.target.value })}
                  className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  rows={2}
                  placeholder="Internal note about this attendee..."
                />
              </div>
              <div className="flex items-center gap-3">
                <input
                  type="checkbox"
                  id="autoCheckin"
                  checked={addAtDoorForm.autoCheckin}
                  onChange={(e) => setAddAtDoorForm({ ...addAtDoorForm, autoCheckin: e.target.checked })}
                  className="w-4 h-4 rounded border-secondary-light-gray text-primary-yellow focus:ring-primary-yellow"
                />
                <label htmlFor="autoCheckin" className="text-sm font-medium">
                  Auto check-in immediately
                </label>
              </div>
              <div className="flex gap-3 pt-2">
                <Button
                  type="button"
                  variant="outline"
                  onClick={() => setShowAddAtDoorModal(false)}
                  className="flex-1"
                >
                  Cancel
                </Button>
                <Button type="submit" isLoading={submitting} className="flex-1">
                  Add Attendee
                </Button>
              </div>
            </form>
          </Card>
        </div>
      )}

      {/* Manual Ticket Modal */}
      {showManualTicketModal && (
        <div className="fixed inset-0 bg-black/50 z-50 flex items-center justify-center p-4">
          <Card className="w-full max-w-md">
            <div className="flex items-center justify-between p-4 border-b border-secondary-light-gray">
              <div>
                <h2 className="text-lg font-bold">Create Manual Ticket</h2>
                <p className="text-sm text-gray-500">Attendee will receive a confirmation email with their ticket</p>
              </div>
              <button
                onClick={() => setShowManualTicketModal(false)}
                className="p-2 hover:bg-gray-100 rounded-btn"
              >
                <XMarkIcon className="w-5 h-5" />
              </button>
            </div>
            <form onSubmit={handleManualTicket} className="p-4 space-y-4">
              <div className="grid grid-cols-2 gap-3">
                <div>
                  <label className="block text-sm font-medium mb-1">First Name *</label>
                  <input
                    type="text"
                    required
                    value={manualTicketForm.firstName}
                    onChange={(e) => setManualTicketForm({ ...manualTicketForm, firstName: e.target.value })}
                    className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                    placeholder="First name"
                  />
                </div>
                <div>
                  <label className="block text-sm font-medium mb-1">Last Name (optional)</label>
                  <input
                    type="text"
                    value={manualTicketForm.lastName}
                    onChange={(e) => setManualTicketForm({ ...manualTicketForm, lastName: e.target.value })}
                    className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                    placeholder="Last name"
                  />
                </div>
              </div>
              <div>
                <label className="block text-sm font-medium mb-1">Email *</label>
                <input
                  type="email"
                  required
                  value={manualTicketForm.email}
                  onChange={(e) => setManualTicketForm({ ...manualTicketForm, email: e.target.value })}
                  className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  placeholder="email@example.com"
                />
                <p className="text-xs text-gray-500 mt-1">
                  Booking confirmation and ticket will be sent to this email
                </p>
              </div>
              <div>
                <label className="block text-sm font-medium mb-1">Phone (optional)</label>
                <input
                  type="tel"
                  value={manualTicketForm.phone}
                  onChange={(e) => setManualTicketForm({ ...manualTicketForm, phone: e.target.value })}
                  className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  placeholder="+595 981 123456"
                />
              </div>
              <div>
                <label className="block text-sm font-medium mb-1">Admin Note (optional)</label>
                <textarea
                  value={manualTicketForm.adminNote}
                  onChange={(e) => setManualTicketForm({ ...manualTicketForm, adminNote: e.target.value })}
                  className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  rows={2}
                  placeholder="Internal note about this attendee..."
                />
              </div>
              <div className="bg-blue-50 border border-blue-200 rounded-lg p-3">
                <div className="flex items-start gap-2">
                  <EnvelopeIcon className="w-5 h-5 text-blue-500 mt-0.5 flex-shrink-0" />
                  <div className="text-sm text-blue-800">
                    <p className="font-medium">This will send:</p>
                    <ul className="list-disc ml-4 mt-1 space-y-0.5">
                      <li>Booking confirmation email</li>
                      <li>Ticket with QR code</li>
                    </ul>
                  </div>
                </div>
              </div>
              <div className="flex gap-3 pt-2">
                <Button
                  type="button"
                  variant="outline"
                  onClick={() => setShowManualTicketModal(false)}
                  className="flex-1"
                >
                  Cancel
                </Button>
                <Button type="submit" isLoading={submitting} className="flex-1">
                  <EnvelopeIcon className="w-4 h-4 mr-2" />
                  Create & Send
                </Button>
              </div>
            </form>
          </Card>
        </div>
      )}

      {/* Note Modal */}
      {showNoteModal && selectedTicket && (
        <div className="fixed inset-0 bg-black/50 z-50 flex items-center justify-center p-4">
          <Card className="w-full max-w-md">
            <div className="flex items-center justify-between p-4 border-b border-secondary-light-gray">
              <div>
                <h2 className="text-lg font-bold">Admin Note</h2>
                <p className="text-sm text-gray-500">{selectedTicket.attendeeFirstName} {selectedTicket.attendeeLastName || ''}</p>
              </div>
              <button
                onClick={() => { setShowNoteModal(false); setSelectedTicket(null); }}
                className="p-2 hover:bg-gray-100 rounded-btn"
              >
                <XMarkIcon className="w-5 h-5" />
              </button>
            </div>
            <div className="p-4 space-y-4">
              <div>
                <label className="block text-sm font-medium mb-1">Note</label>
                <textarea
                  value={noteText}
                  onChange={(e) => setNoteText(e.target.value)}
                  className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  rows={4}
                  placeholder="Add a private note about this attendee..."
                  maxLength={1000}
                />
                <p className="text-xs text-gray-400 mt-1 text-right">{noteText.length}/1000</p>
              </div>
              <div className="flex gap-3">
                <Button
                  variant="outline"
                  onClick={() => { setShowNoteModal(false); setSelectedTicket(null); }}
                  className="flex-1"
                >
                  Cancel
                </Button>
                <Button onClick={handleSaveNote} isLoading={submitting} className="flex-1">
                  Save Note
                </Button>
              </div>
            </div>
          </Card>
        </div>
      )}

      {/* Email Tab */}
      {activeTab === 'email' && (
        <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
          <Card className="p-6">
            <h3 className="font-semibold text-lg mb-4">Send Email to Attendees</h3>
            
            <div className="space-y-4">
              <div>
                <label className="block text-sm font-medium mb-2">Email Template</label>
                <select
                  value={selectedTemplate}
                  onChange={(e) => setSelectedTemplate(e.target.value)}
                  className="w-full px-4 py-3 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                >
                  <option value="">Select a template...</option>
                  {templates.map((template) => (
                    <option key={template.id} value={template.slug}>
                      {template.name}
                    </option>
                  ))}
                </select>
              </div>

              <div>
                <label className="block text-sm font-medium mb-2">Recipients</label>
                <select
                  value={recipientFilter}
                  onChange={(e) => setRecipientFilter(e.target.value as any)}
                  className="w-full px-4 py-3 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                >
                  <option value="all">All Attendees ({tickets.length})</option>
                  <option value="confirmed">Confirmed Only ({confirmedCount})</option>
                  <option value="pending">Pending Only ({pendingCount})</option>
                  <option value="checked_in">Checked In Only ({checkedInCount})</option>
                </select>
              </div>

              <div>
                <label className="block text-sm font-medium mb-2">Custom Message (optional)</label>
                <textarea
                  value={customMessage}
                  onChange={(e) => setCustomMessage(e.target.value)}
                  className="w-full px-4 py-3 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                  rows={4}
                  placeholder="Add a custom message that will be included in the email..."
                />
                <p className="text-xs text-gray-500 mt-1">
                  This message will replace the {`{{customMessage}}`} variable in the template.
                </p>
              </div>

              <div className="flex gap-3 pt-2">
                <Button
                  variant="outline"
                  onClick={handlePreviewEmail}
                  disabled={!selectedTemplate}
                >
                  <EyeIcon className="w-4 h-4 mr-2" />
                  Preview
                </Button>
                <Button
                  onClick={handleSendEmail}
                  disabled={!selectedTemplate || getFilteredRecipientCount() === 0}
                  isLoading={sending}
                >
                  <PaperAirplaneIcon className="w-4 h-4 mr-2" />
                  Send to {getFilteredRecipientCount()} {getFilteredRecipientCount() === 1 ? 'person' : 'people'}
                </Button>
              </div>
            </div>
          </Card>

          <Card className="p-6">
            <h3 className="font-semibold text-lg mb-4">Recipient Summary</h3>
            <div className="space-y-3">
              <div className="flex items-center justify-between p-3 bg-gray-50 rounded-btn">
                <div className="flex items-center gap-2">
                  <CheckCircleIcon className="w-5 h-5 text-green-500" />
                  <span>Confirmed</span>
                </div>
                <span className="font-semibold">{confirmedCount}</span>
              </div>
              <div className="flex items-center justify-between p-3 bg-gray-50 rounded-btn">
                <div className="flex items-center gap-2">
                  <ClockIcon className="w-5 h-5 text-yellow-500" />
                  <span>Pending Payment</span>
                </div>
                <span className="font-semibold">{pendingCount}</span>
              </div>
              <div className="flex items-center justify-between p-3 bg-gray-50 rounded-btn">
                <div className="flex items-center gap-2">
                  <TicketIcon className="w-5 h-5 text-blue-500" />
                  <span>Checked In</span>
                </div>
                <span className="font-semibold">{checkedInCount}</span>
              </div>
              <div className="flex items-center justify-between p-3 bg-gray-50 rounded-btn">
                <div className="flex items-center gap-2">
                  <XCircleIcon className="w-5 h-5 text-red-500" />
                  <span>Cancelled</span>
                </div>
                <span className="font-semibold">{cancelledCount}</span>
              </div>
              <div className="border-t pt-3 mt-3">
                <div className="flex items-center justify-between font-semibold">
                  <span>Total Bookings</span>
                  <span>{tickets.length}</span>
                </div>
              </div>
            </div>
          </Card>
        </div>
      )}

      {/* Payments Tab */}
      {activeTab === 'payments' && (
        <div className="space-y-6">
          {loadingPayments ? (
            <div className="flex items-center justify-center py-12">
              <div className="animate-spin w-8 h-8 border-4 border-primary-yellow border-t-transparent rounded-full" />
            </div>
          ) : (
            <>
              {/* Header */}
              <div className="flex items-center justify-between">
                <div>
                  <h3 className="font-semibold text-lg">
                    {locale === 'es' ? 'Métodos de Pago del Evento' : 'Event Payment Methods'}
                  </h3>
                  <p className="text-sm text-gray-500">
                    {hasPaymentOverrides 
                      ? (locale === 'es' ? 'Este evento tiene configuración personalizada' : 'This event has custom settings')
                      : (locale === 'es' ? 'Usando configuración global' : 'Using global settings')}
                  </p>
                </div>
                <div className="flex items-center gap-2">
                  {hasPaymentOverrides && (
                    <Button variant="outline" size="sm" onClick={handleResetToGlobal} disabled={savingPayments}>
                      <ArrowPathIcon className="w-4 h-4 mr-2" />
                      {locale === 'es' ? 'Resetear a Global' : 'Reset to Global'}
                    </Button>
                  )}
                  <Button onClick={handleSavePaymentOptions} isLoading={savingPayments}>
                    {locale === 'es' ? 'Guardar Cambios' : 'Save Changes'}
                  </Button>
                </div>
              </div>

              {/* TPago */}
              <Card>
                <div className="p-6">
                  <div className="flex items-center justify-between mb-4">
                    <div className="flex items-center gap-3">
                      <div className="w-10 h-10 bg-blue-100 rounded-full flex items-center justify-center">
                        <CreditCardIcon className="w-5 h-5 text-blue-600" />
                      </div>
                      <div>
                        <h4 className="font-semibold">
                          {locale === 'es' ? 'TPago / Tarjeta Internacional' : 'TPago / International Card'}
                        </h4>
                        <p className="text-sm text-gray-500">
                          {locale === 'es' ? 'Pago manual - requiere aprobación' : 'Manual payment - requires approval'}
                        </p>
                      </div>
                    </div>
                    <div className="flex items-center gap-3">
                      {globalPaymentOptions && !globalPaymentOptions.tpagoEnabled && (
                        <span className="text-xs text-gray-400">
                          {locale === 'es' ? '(Deshabilitado globalmente)' : '(Disabled globally)'}
                        </span>
                      )}
                      <button
                        onClick={() => updatePaymentOverride('tpagoEnabled', !getEffectivePaymentOption('tpagoEnabled'))}
                        className={`relative inline-flex h-6 w-11 items-center rounded-full transition-colors ${
                          getEffectivePaymentOption('tpagoEnabled') ? 'bg-primary-yellow' : 'bg-gray-300'
                        }`}
                      >
                        <span
                          className={`inline-block h-4 w-4 transform rounded-full bg-white transition-transform ${
                            getEffectivePaymentOption('tpagoEnabled') ? 'translate-x-6' : 'translate-x-1'
                          }`}
                        />
                      </button>
                    </div>
                  </div>

                  {getEffectivePaymentOption('tpagoEnabled') && (
                    <div className="space-y-4 pt-4 border-t">
                      <div>
                        <label className="block text-sm font-medium text-gray-700 mb-1">
                          {locale === 'es' ? 'Enlace de Pago TPago' : 'TPago Payment Link'}
                          {globalPaymentOptions?.tpagoLink && (
                            <span className="text-xs text-gray-400 ml-2">
                              ({locale === 'es' ? 'Global' : 'Global'}: {globalPaymentOptions.tpagoLink.substring(0, 30)}...)
                            </span>
                          )}
                        </label>
                        <input
                          type="url"
                          value={paymentOverrides.tpagoLink ?? ''}
                          onChange={(e) => updatePaymentOverride('tpagoLink', e.target.value || null)}
                          placeholder={globalPaymentOptions?.tpagoLink || 'https://www.tpago.com.py/links?alias=...'}
                          className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                        />
                      </div>
                      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            Instructions (English)
                          </label>
                          <textarea
                            value={paymentOverrides.tpagoInstructions ?? ''}
                            onChange={(e) => updatePaymentOverride('tpagoInstructions', e.target.value || null)}
                            rows={3}
                            placeholder={globalPaymentOptions?.tpagoInstructions || 'Instructions for users...'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            Instrucciones (Español)
                          </label>
                          <textarea
                            value={paymentOverrides.tpagoInstructionsEs ?? ''}
                            onChange={(e) => updatePaymentOverride('tpagoInstructionsEs', e.target.value || null)}
                            rows={3}
                            placeholder={globalPaymentOptions?.tpagoInstructionsEs || 'Instrucciones para usuarios...'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                      </div>
                      <p className="text-xs text-gray-400">
                        {locale === 'es' 
                          ? 'Deja vacío para usar la configuración global'
                          : 'Leave empty to use global settings'}
                      </p>
                    </div>
                  )}
                </div>
              </Card>

              {/* Bank Transfer */}
              <Card>
                <div className="p-6">
                  <div className="flex items-center justify-between mb-4">
                    <div className="flex items-center gap-3">
                      <div className="w-10 h-10 bg-green-100 rounded-full flex items-center justify-center">
                        <BuildingLibraryIcon className="w-5 h-5 text-green-600" />
                      </div>
                      <div>
                        <h4 className="font-semibold">
                          {locale === 'es' ? 'Transferencia Bancaria' : 'Bank Transfer'}
                        </h4>
                        <p className="text-sm text-gray-500">
                          {locale === 'es' ? 'Pago manual - requiere aprobación' : 'Manual payment - requires approval'}
                        </p>
                      </div>
                    </div>
                    <div className="flex items-center gap-3">
                      {globalPaymentOptions && !globalPaymentOptions.bankTransferEnabled && (
                        <span className="text-xs text-gray-400">
                          {locale === 'es' ? '(Deshabilitado globalmente)' : '(Disabled globally)'}
                        </span>
                      )}
                      <button
                        onClick={() => updatePaymentOverride('bankTransferEnabled', !getEffectivePaymentOption('bankTransferEnabled'))}
                        className={`relative inline-flex h-6 w-11 items-center rounded-full transition-colors ${
                          getEffectivePaymentOption('bankTransferEnabled') ? 'bg-primary-yellow' : 'bg-gray-300'
                        }`}
                      >
                        <span
                          className={`inline-block h-4 w-4 transform rounded-full bg-white transition-transform ${
                            getEffectivePaymentOption('bankTransferEnabled') ? 'translate-x-6' : 'translate-x-1'
                          }`}
                        />
                      </button>
                    </div>
                  </div>

                  {getEffectivePaymentOption('bankTransferEnabled') && (
                    <div className="space-y-4 pt-4 border-t">
                      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            {locale === 'es' ? 'Nombre del Banco' : 'Bank Name'}
                          </label>
                          <input
                            type="text"
                            value={paymentOverrides.bankName ?? ''}
                            onChange={(e) => updatePaymentOverride('bankName', e.target.value || null)}
                            placeholder={globalPaymentOptions?.bankName || 'e.g., Banco Itaú'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            {locale === 'es' ? 'Titular de la Cuenta' : 'Account Holder'}
                          </label>
                          <input
                            type="text"
                            value={paymentOverrides.bankAccountHolder ?? ''}
                            onChange={(e) => updatePaymentOverride('bankAccountHolder', e.target.value || null)}
                            placeholder={globalPaymentOptions?.bankAccountHolder || 'e.g., Juan Pérez'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            {locale === 'es' ? 'Número de Cuenta' : 'Account Number'}
                          </label>
                          <input
                            type="text"
                            value={paymentOverrides.bankAccountNumber ?? ''}
                            onChange={(e) => updatePaymentOverride('bankAccountNumber', e.target.value || null)}
                            placeholder={globalPaymentOptions?.bankAccountNumber || 'e.g., 1234567890'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            Alias
                          </label>
                          <input
                            type="text"
                            value={paymentOverrides.bankAlias ?? ''}
                            onChange={(e) => updatePaymentOverride('bankAlias', e.target.value || null)}
                            placeholder={globalPaymentOptions?.bankAlias || 'e.g., spanglish.pagos'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            {locale === 'es' ? 'Teléfono' : 'Phone Number'}
                          </label>
                          <input
                            type="text"
                            value={paymentOverrides.bankPhone ?? ''}
                            onChange={(e) => updatePaymentOverride('bankPhone', e.target.value || null)}
                            placeholder={globalPaymentOptions?.bankPhone || 'e.g., +595 981 123456'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                      </div>
                      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            Additional Notes (English)
                          </label>
                          <textarea
                            value={paymentOverrides.bankNotes ?? ''}
                            onChange={(e) => updatePaymentOverride('bankNotes', e.target.value || null)}
                            rows={3}
                            placeholder={globalPaymentOptions?.bankNotes || 'Additional notes for users...'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            Notas Adicionales (Español)
                          </label>
                          <textarea
                            value={paymentOverrides.bankNotesEs ?? ''}
                            onChange={(e) => updatePaymentOverride('bankNotesEs', e.target.value || null)}
                            rows={3}
                            placeholder={globalPaymentOptions?.bankNotesEs || 'Notas adicionales para usuarios...'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                      </div>
                      <p className="text-xs text-gray-400">
                        {locale === 'es' 
                          ? 'Deja vacío para usar la configuración global'
                          : 'Leave empty to use global settings'}
                      </p>
                    </div>
                  )}
                </div>
              </Card>

              {/* Bitcoin Lightning */}
              <Card>
                <div className="p-6">
                  <div className="flex items-center justify-between">
                    <div className="flex items-center gap-3">
                      <div className="w-10 h-10 bg-orange-100 rounded-full flex items-center justify-center">
                        <BoltIcon className="w-5 h-5 text-orange-600" />
                      </div>
                      <div>
                        <h4 className="font-semibold">Bitcoin Lightning</h4>
                        <p className="text-sm text-gray-500">
                          {locale === 'es' ? 'Pago instantáneo - confirmación automática' : 'Instant payment - automatic confirmation'}
                        </p>
                      </div>
                    </div>
                    <div className="flex items-center gap-3">
                      {globalPaymentOptions && !globalPaymentOptions.lightningEnabled && (
                        <span className="text-xs text-gray-400">
                          {locale === 'es' ? '(Deshabilitado globalmente)' : '(Disabled globally)'}
                        </span>
                      )}
                      <button
                        onClick={() => updatePaymentOverride('lightningEnabled', !getEffectivePaymentOption('lightningEnabled'))}
                        className={`relative inline-flex h-6 w-11 items-center rounded-full transition-colors ${
                          getEffectivePaymentOption('lightningEnabled') ? 'bg-primary-yellow' : 'bg-gray-300'
                        }`}
                      >
                        <span
                          className={`inline-block h-4 w-4 transform rounded-full bg-white transition-transform ${
                            getEffectivePaymentOption('lightningEnabled') ? 'translate-x-6' : 'translate-x-1'
                          }`}
                        />
                      </button>
                    </div>
                  </div>
                  {getEffectivePaymentOption('lightningEnabled') && (
                    <div className="pt-4 border-t mt-4">
                      <div className="bg-orange-50 border border-orange-200 rounded-lg p-4">
                        <p className="text-sm text-orange-800">
                          {locale === 'es' 
                            ? 'Lightning está configurado a través de LNbits. No se puede personalizar por evento.'
                            : 'Lightning is configured via LNbits. Cannot be customized per event.'}
                        </p>
                      </div>
                    </div>
                  )}
                </div>
              </Card>

              {/* Cash at Door */}
              <Card>
                <div className="p-6">
                  <div className="flex items-center justify-between mb-4">
                    <div className="flex items-center gap-3">
                      <div className="w-10 h-10 bg-yellow-100 rounded-full flex items-center justify-center">
                        <BanknotesIcon className="w-5 h-5 text-yellow-600" />
                      </div>
                      <div>
                        <h4 className="font-semibold">
                          {locale === 'es' ? 'Efectivo en el Evento' : 'Cash at the Door'}
                        </h4>
                        <p className="text-sm text-gray-500">
                          {locale === 'es' ? 'Pago manual - requiere aprobación' : 'Manual payment - requires approval'}
                        </p>
                      </div>
                    </div>
                    <div className="flex items-center gap-3">
                      {globalPaymentOptions && !globalPaymentOptions.cashEnabled && (
                        <span className="text-xs text-gray-400">
                          {locale === 'es' ? '(Deshabilitado globalmente)' : '(Disabled globally)'}
                        </span>
                      )}
                      <button
                        onClick={() => updatePaymentOverride('cashEnabled', !getEffectivePaymentOption('cashEnabled'))}
                        className={`relative inline-flex h-6 w-11 items-center rounded-full transition-colors ${
                          getEffectivePaymentOption('cashEnabled') ? 'bg-primary-yellow' : 'bg-gray-300'
                        }`}
                      >
                        <span
                          className={`inline-block h-4 w-4 transform rounded-full bg-white transition-transform ${
                            getEffectivePaymentOption('cashEnabled') ? 'translate-x-6' : 'translate-x-1'
                          }`}
                        />
                      </button>
                    </div>
                  </div>

                  {getEffectivePaymentOption('cashEnabled') && (
                    <div className="space-y-4 pt-4 border-t">
                      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            Instructions (English)
                          </label>
                          <textarea
                            value={paymentOverrides.cashInstructions ?? ''}
                            onChange={(e) => updatePaymentOverride('cashInstructions', e.target.value || null)}
                            rows={3}
                            placeholder={globalPaymentOptions?.cashInstructions || 'Instructions for cash payments...'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-1">
                            Instrucciones (Español)
                          </label>
                          <textarea
                            value={paymentOverrides.cashInstructionsEs ?? ''}
                            onChange={(e) => updatePaymentOverride('cashInstructionsEs', e.target.value || null)}
                            rows={3}
                            placeholder={globalPaymentOptions?.cashInstructionsEs || 'Instrucciones para pagos en efectivo...'}
                            className="w-full px-4 py-2 rounded-btn border border-secondary-light-gray focus:outline-none focus:ring-2 focus:ring-primary-yellow"
                          />
                        </div>
                      </div>
                      <p className="text-xs text-gray-400">
                        {locale === 'es' 
                          ? 'Deja vacío para usar la configuración global'
                          : 'Leave empty to use global settings'}
                      </p>
                    </div>
                  )}
                </div>
              </Card>

              {/* Summary Card */}
              <Card>
                <div className="p-6">
                  <h4 className="font-semibold text-lg mb-4">
                    {locale === 'es' ? 'Resumen de Métodos Activos' : 'Active Methods Summary'}
                  </h4>
                  <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
                    <div className="flex items-center gap-2">
                      {getEffectivePaymentOption('tpagoEnabled') ? (
                        <CheckCircleIcon className="w-5 h-5 text-green-500" />
                      ) : (
                        <XCircleIcon className="w-5 h-5 text-gray-300" />
                      )}
                      <span className={getEffectivePaymentOption('tpagoEnabled') ? 'text-gray-900' : 'text-gray-400'}>
                        TPago
                      </span>
                    </div>
                    <div className="flex items-center gap-2">
                      {getEffectivePaymentOption('bankTransferEnabled') ? (
                        <CheckCircleIcon className="w-5 h-5 text-green-500" />
                      ) : (
                        <XCircleIcon className="w-5 h-5 text-gray-300" />
                      )}
                      <span className={getEffectivePaymentOption('bankTransferEnabled') ? 'text-gray-900' : 'text-gray-400'}>
                        {locale === 'es' ? 'Transferencia' : 'Bank Transfer'}
                      </span>
                    </div>
                    <div className="flex items-center gap-2">
                      {getEffectivePaymentOption('lightningEnabled') ? (
                        <CheckCircleIcon className="w-5 h-5 text-green-500" />
                      ) : (
                        <XCircleIcon className="w-5 h-5 text-gray-300" />
                      )}
                      <span className={getEffectivePaymentOption('lightningEnabled') ? 'text-gray-900' : 'text-gray-400'}>
                        Lightning
                      </span>
                    </div>
                    <div className="flex items-center gap-2">
                      {getEffectivePaymentOption('cashEnabled') ? (
                        <CheckCircleIcon className="w-5 h-5 text-green-500" />
                      ) : (
                        <XCircleIcon className="w-5 h-5 text-gray-300" />
                      )}
                      <span className={getEffectivePaymentOption('cashEnabled') ? 'text-gray-900' : 'text-gray-400'}>
                        {locale === 'es' ? 'Efectivo' : 'Cash'}
                      </span>
                    </div>
                  </div>
                  {hasPaymentOverrides && (
                    <p className="text-xs text-gray-500 mt-4 flex items-center gap-1">
                      <span className="inline-block w-2 h-2 bg-primary-yellow rounded-full"></span>
                      {locale === 'es' 
                        ? 'Este evento usa configuración personalizada que sobrescribe la global'
                        : 'This event uses custom settings that override global defaults'}
                    </p>
                  )}
                </div>
              </Card>
            </>
          )}
        </div>
      )}

      {/* Preview Modal */}
      {previewHtml && (
        <div className="fixed inset-0 bg-black/50 z-50 flex items-center justify-center p-4">
          <Card className="w-full max-w-3xl max-h-[90vh] overflow-hidden flex flex-col">
            <div className="flex items-center justify-between p-4 border-b border-secondary-light-gray">
              <h2 className="text-lg font-bold">Email Preview</h2>
              <Button variant="outline" size="sm" onClick={() => setPreviewHtml(null)}>
                Close
              </Button>
            </div>
            <div className="flex-1 overflow-auto">
              <iframe
                srcDoc={previewHtml}
                className="w-full h-full min-h-[500px]"
                title="Email Preview"
              />
            </div>
          </Card>
        </div>
      )}
    </div>
  );
}