"use client";

import { useState, useEffect, useCallback } from "react";
import { Card } from "@/components/ui/card";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { toast } from "sonner";
import {
  Database, Search, X, ChevronDown, ChevronUp, Trash2, ExternalLink,
  Mail, Star, Tag, ArrowUpDown, ArrowUp, ArrowDown,
  CheckSquare, Square, Download, Phone, Copy, MapPin, Building2, Globe
} from "lucide-react";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";

// ─── Types ────────────────────────────────────────────────────────────────────

interface Lead {
  id: string;
  domain: string | null;
  companyName: string | null;
  contactName: string | null;
  contactTitle: string | null;
  email: string | null;
  linkedinUrl: string | null;
  phone: string | null;
  address: string | null;
  sourceTab: string;
  sourceTerm: string | null;
  sourceJobId: string | null;
  serpTitle: string | null;
  serpSnippet: string | null;
  serpRank: number | null;
  serpUrl: string | null;
  status: string;
  priority: string;
  notes: string | null;
  tags: string | null;
  country: string | null;
  headcount: string | null;
  industry: string | null;
  description: string | null;
  capturedAt: string;
  contactedAt: string | null;
  events?: Array<{ id: string; event: string; at: string }>;
}

interface Stats {
  total: number;
  new: number;
  contacted: number;
  withEmail: number;
  dailyCounts: Array<{ date: string; count: number }>;
}

// ─── Constants ─────────────────────────────────────────────────────────────────

const STATUS_CONFIG: Record<string, { label: string; color: string; bg: string }> = {
  new:          { label: "Neu",           color: "text-blue-300",   bg: "bg-blue-500/20 border-blue-500/30" },
  in_progress:  { label: "In Bearbeitung",color: "text-purple-300", bg: "bg-purple-500/20 border-purple-500/30" },
  contacted:    { label: "Kontaktiert",   color: "text-teal-300",   bg: "bg-teal-500/20 border-teal-500/30" },
  qualified:    { label: "Qualifiziert",  color: "text-green-300",  bg: "bg-green-500/20 border-green-500/30" },
  not_relevant: { label: "Nicht relevant",color: "text-gray-400",   bg: "bg-gray-500/20 border-gray-500/30" },
  converted:    { label: "Konvertiert",   color: "text-amber-300",  bg: "bg-amber-500/20 border-amber-500/30" },
};

const SOURCE_CONFIG: Record<string, { label: string; icon: string }> = {
  airscale:   { label: "AirScale",   icon: "🏢" },
  linkedin:   { label: "LinkedIn",   icon: "💼" },
  serp:       { label: "SERP",       icon: "🔍" },
  "quick-serp": { label: "Quick SERP", icon: "⚡" },
  maps:       { label: "Maps",       icon: "📍" },
};

const TAG_PRESETS = [
  "solar", "b2b", "deutschland", "founder", "kmu", "warmkontakt",
  "kaltakquise", "follow-up", "interessiert", "angebot-gesendet",
];

function tagColor(tag: string): string {
  let hash = 0;
  for (let i = 0; i < tag.length; i++) hash = tag.charCodeAt(i) + ((hash << 5) - hash);
  const colors = [
    "bg-blue-500/20 text-blue-300 border-blue-500/30",
    "bg-purple-500/20 text-purple-300 border-purple-500/30",
    "bg-green-500/20 text-green-300 border-green-500/30",
    "bg-amber-500/20 text-amber-300 border-amber-500/30",
    "bg-pink-500/20 text-pink-300 border-pink-500/30",
    "bg-teal-500/20 text-teal-300 border-teal-500/30",
    "bg-orange-500/20 text-orange-300 border-orange-500/30",
  ];
  return colors[Math.abs(hash) % colors.length];
}

// ─── Sparkline ────────────────────────────────────────────────────────────────

function Sparkline({ data, color }: { data: number[]; color: string }) {
  if (!data.length) return null;
  const max = Math.max(...data, 1);
  const w = 60, h = 24;
  const points = data.map((v, i) => `${(i / (data.length - 1)) * w},${h - (v / max) * h}`).join(" ");
  return (
    <svg width={w} height={h} className="opacity-70">
      <polyline points={points} fill="none" stroke={color} strokeWidth="1.5" strokeLinecap="round" strokeLinejoin="round" />
    </svg>
  );
}

// ─── Side Panel ───────────────────────────────────────────────────────────────

function SidePanel({ lead, onClose, onUpdate, onDelete }: {
  lead: Lead;
  onClose: () => void;
  onUpdate: (updated: Partial<Lead>) => void;
  onDelete: (id: string) => void;
}) {
  const tags: string[] = JSON.parse(lead.tags || "[]");
  const src = SOURCE_CONFIG[lead.sourceTab];

  function copy(text: string, label: string) {
    navigator.clipboard.writeText(text);
    toast.success(`${label} kopiert`);
  }

  return (
    <div className="fixed inset-0 z-40 flex justify-end" onClick={onClose}>
      <div className="absolute inset-0 bg-black/40 backdrop-blur-sm" />
      <div
        className="relative z-50 w-full max-w-sm h-full bg-[#0e0e1a] border-l border-[#1e1e2e] flex flex-col overflow-hidden"
        style={{ animation: "slideIn 200ms ease-out" }}
        onClick={e => e.stopPropagation()}
      >
        <style>{`@keyframes slideIn { from { transform: translateX(100%) } to { transform: translateX(0) } }`}</style>

        {/* Header */}
        <div className="border-b border-[#1e1e2e] p-4 flex items-start gap-3 flex-shrink-0">
          <div className="flex-1 min-w-0">
            <h2 className="text-base font-bold text-white truncate">{lead.companyName || lead.domain || "Unbekannt"}</h2>
            {lead.domain && (
              <a href={`https://${lead.domain}`} target="_blank" rel="noreferrer"
                className="text-xs text-blue-400 hover:underline flex items-center gap-1 mt-0.5">
                <Globe className="w-3 h-3" />{lead.domain}
              </a>
            )}
            {lead.industry && <p className="text-xs text-purple-400 mt-0.5">{lead.industry}</p>}
          </div>
          <button onClick={onClose} className="text-gray-500 hover:text-white p-1 rounded flex-shrink-0">
            <X className="w-4 h-4" />
          </button>
        </div>

        {/* Scrollable body */}
        <div className="flex-1 overflow-y-auto p-4 space-y-4">

          {/* Description */}
          {lead.description && (
            <div>
              <p className="text-[10px] font-semibold text-gray-500 uppercase tracking-wider mb-1">Beschreibung</p>
              <p className="text-xs text-gray-300 leading-relaxed">{lead.description}</p>
            </div>
          )}

          {/* Contact */}
          {(lead.contactName || lead.email || lead.phone || lead.address || lead.linkedinUrl) && (
            <div>
              <p className="text-[10px] font-semibold text-gray-500 uppercase tracking-wider mb-2">Kontakt</p>
              <div className="space-y-2">
                {lead.contactName && (
                  <div className="flex items-center gap-2">
                    <Building2 className="w-3.5 h-3.5 text-gray-600 flex-shrink-0" />
                    <span className="text-sm text-white">{lead.contactName}
                      {lead.contactTitle && <span className="text-gray-500 ml-1 text-xs">· {lead.contactTitle}</span>}
                    </span>
                  </div>
                )}
                {lead.email && (
                  <div className="flex items-center gap-2">
                    <Mail className="w-3.5 h-3.5 text-gray-600 flex-shrink-0" />
                    <span className="text-xs font-mono text-green-400 truncate flex-1">{lead.email}</span>
                    <button onClick={() => copy(lead.email!, "E-Mail")} className="text-gray-600 hover:text-white flex-shrink-0">
                      <Copy className="w-3 h-3" />
                    </button>
                  </div>
                )}
                {lead.phone && (
                  <div className="flex items-center gap-2">
                    <Phone className="w-3.5 h-3.5 text-gray-600 flex-shrink-0" />
                    <a href={`tel:${lead.phone}`} className="text-xs text-gray-300 hover:text-white">{lead.phone}</a>
                    <button onClick={() => copy(lead.phone!, "Telefon")} className="text-gray-600 hover:text-white flex-shrink-0">
                      <Copy className="w-3 h-3" />
                    </button>
                  </div>
                )}
                {lead.address && (
                  <div className="flex items-start gap-2">
                    <MapPin className="w-3.5 h-3.5 text-gray-600 flex-shrink-0 mt-0.5" />
                    <span className="text-xs text-gray-300 flex-1">{lead.address}</span>
                    <a
                      href={`https://www.google.com/maps/search/?api=1&query=${encodeURIComponent(lead.address)}`}
                      target="_blank" rel="noreferrer"
                      className="text-gray-600 hover:text-green-400 flex-shrink-0"
                      title="In Google Maps öffnen"
                    >
                      <ExternalLink className="w-3 h-3" />
                    </a>
                  </div>
                )}
                {lead.linkedinUrl && (
                  <div className="flex items-center gap-2">
                    <ExternalLink className="w-3.5 h-3.5 text-gray-600 flex-shrink-0" />
                    <a href={lead.linkedinUrl} target="_blank" rel="noreferrer"
                      className="text-xs text-blue-400 hover:underline truncate">
                      LinkedIn Profil
                    </a>
                  </div>
                )}
              </div>
            </div>
          )}

          {/* Company info */}
          {(lead.headcount || lead.country) && (
            <div>
              <p className="text-[10px] font-semibold text-gray-500 uppercase tracking-wider mb-1">Unternehmen</p>
              <div className="flex gap-3 text-xs text-gray-400">
                {lead.headcount && <span>👥 {lead.headcount} Mitarbeiter</span>}
                {lead.country && <span>🌍 {lead.country}</span>}
              </div>
            </div>
          )}

          {/* Source */}
          <div>
            <p className="text-[10px] font-semibold text-gray-500 uppercase tracking-wider mb-1">Quelle</p>
            <div className="space-y-1 text-xs text-gray-400">
              <p>{src?.icon} {src?.label || lead.sourceTab}</p>
              {lead.sourceTerm && (
                <p>Suche: <span className="text-gray-300">"{lead.sourceTerm}"</span></p>
              )}
              <p>Erfasst: <span className="text-gray-300">{new Date(lead.capturedAt).toLocaleString("de-DE")}</span></p>
            </div>
          </div>

          {/* Tags (read-only) */}
          {tags.length > 0 && (
            <div>
              <p className="text-[10px] font-semibold text-gray-500 uppercase tracking-wider mb-2">Tags</p>
              <div className="flex flex-wrap gap-1.5">
                {tags.map(tag => (
                  <span key={tag} className={`px-2 py-0.5 rounded-full text-xs border ${tagColor(tag)}`}>{tag}</span>
                ))}
              </div>
            </div>
          )}
        </div>

        {/* Delete */}
        <div className="p-4 border-t border-[#1e1e2e] flex-shrink-0">
          <button
            onClick={() => { onDelete(lead.id); onClose(); }}
            className="w-full flex items-center justify-center gap-2 px-3 py-2 rounded-lg bg-red-500/10 text-red-400 border border-red-500/20 hover:bg-red-500/20 text-sm transition-all"
          >
            <Trash2 className="w-3.5 h-3.5" /> Lead löschen
          </button>
        </div>
      </div>
    </div>
  );
}

// ─── Main Page ─────────────────────────────────────────────────────────────────

export default function LeadVaultPage() {
  // Stats
  const [stats, setStats] = useState<Stats | null>(null);

  // Quick SERP
  const [serpOpen, setSerpOpen] = useState(false);
  const [serpQuery, setSerpQuery] = useState("");
  const [serpCount, setSerpCount] = useState("25");
  const serpCountry = "de";
  const serpLanguage = "de";
  const [serpFilter, setSerpFilter] = useState(true);
  const [serpRunning, setSerpRunning] = useState(false);

  // Filters
  const [search, setSearch] = useState("");
  const [debouncedSearch, setDebouncedSearch] = useState("");
  const [filterStatus, setFilterStatus] = useState<string[]>([]);
  const [filterSource, setFilterSource] = useState<string[]>([]);
  const [filterHasEmail, setFilterHasEmail] = useState("");
  const [filterContacted, setFilterContacted] = useState(false);
  const [filterFavorite, setFilterFavorite] = useState(false);
  const [filterSearchTerms, setFilterSearchTerms] = useState<string[]>([]);
  const [availableSearchTerms, setAvailableSearchTerms] = useState<string[]>([]);

  // Table
  const [leads, setLeads] = useState<Lead[]>([]);
  const [total, setTotal] = useState(0);
  const [page, setPage] = useState(1);
  const [perPage, setPerPage] = useState(50);
  const [pages, setPages] = useState(1);
  const [sortBy, setSortBy] = useState("capturedAt");
  const [sortDir, setSortDir] = useState<"asc" | "desc">("desc");
  const [loading, setLoading] = useState(false);
  const [selected, setSelected] = useState<Set<string>>(new Set());

  // Side panel
  const [panelLead, setPanelLead] = useState<Lead | null>(null);

  // Export dropdown
  const [exportOpen, setExportOpen] = useState(false);

  // Bulk
  const [bulkTag, setBulkTag] = useState("");

  // Debounce search
  useEffect(() => {
    const t = setTimeout(() => { setDebouncedSearch(search); setPage(1); }, 300);
    return () => clearTimeout(t);
  }, [search]);

  const loadStats = useCallback(async () => {
    const res = await fetch("/api/leads/stats");
    if (res.ok) setStats(await res.json() as Stats);
  }, []);

  const loadLeads = useCallback(async () => {
    setLoading(true);
    try {
      const params = new URLSearchParams({
        page: String(page), perPage: String(perPage),
        search: debouncedSearch, sortBy, sortDir,
      });
      filterStatus.forEach(s => params.append("status", s));
      filterSource.forEach(s => params.append("sourceTab", s));
      if (filterHasEmail) params.set("hasEmail", filterHasEmail);
      if (filterContacted) params.set("contacted", "yes");
      if (filterFavorite) params.set("favorite", "yes");
      filterSearchTerms.forEach(t => params.append("searchTerm", t));

      const res = await fetch(`/api/leads?${params}`);
      if (res.ok) {
        const data = await res.json() as { leads: Lead[]; total: number; pages: number };
        setLeads(data.leads);
        setTotal(data.total);
        setPages(data.pages);
      }
    } finally {
      setLoading(false);
    }
  }, [page, perPage, debouncedSearch, sortBy, sortDir, filterStatus, filterSource, filterHasEmail, filterContacted, filterFavorite, filterSearchTerms]);

  const loadSearchTerms = useCallback(async () => {
    const res = await fetch("/api/leads/search-terms");
    if (res.ok) setAvailableSearchTerms(await res.json() as string[]);
  }, []);

  useEffect(() => { loadStats(); const t = setInterval(loadStats, 30000); return () => clearInterval(t); }, [loadStats]);
  useEffect(() => { loadLeads(); }, [loadLeads]);
  useEffect(() => { loadSearchTerms(); }, [loadSearchTerms]);

  function toggleSort(field: string) {
    if (sortBy === field) setSortDir(d => d === "asc" ? "desc" : "asc");
    else { setSortBy(field); setSortDir("desc"); }
    setPage(1);
  }

  function toggleFilter(arr: string[], setArr: (v: string[]) => void, val: string) {
    setArr(arr.includes(val) ? arr.filter(x => x !== val) : [...arr, val]);
    setPage(1);
  }

  function clearFilters() {
    setSearch(""); setFilterStatus([]); setFilterSource([]);
    setFilterHasEmail(""); setFilterContacted(false); setFilterFavorite(false);
    setFilterSearchTerms([]);
    setPage(1);
  }

  async function updateLead(id: string, data: Partial<Lead>) {
    // Optimistic update
    setLeads(prev => prev.map(l => l.id === id ? { ...l, ...data } : l));
    if (panelLead?.id === id) setPanelLead(prev => prev ? { ...prev, ...data } : prev);

    const res = await fetch(`/api/leads/${id}`, {
      method: "PATCH",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(data),
    });
    if (!res.ok) {
      toast.error("Update fehlgeschlagen");
      loadLeads(); // Revert
    } else {
      loadStats();
    }
  }

  async function deleteLead(id: string) {
    if (!confirm("Lead löschen?")) return;
    await fetch(`/api/leads/${id}`, { method: "DELETE" });
    setLeads(prev => prev.filter(l => l.id !== id));
    setTotal(prev => prev - 1);
    if (panelLead?.id === id) setPanelLead(null);
    loadStats();
    toast.success("Lead gelöscht");
  }

  async function runQuickSerp() {
    if (!serpQuery.trim()) return toast.error("Suchbegriff eingeben");
    setSerpRunning(true);
    try {
      const res = await fetch("/api/leads/quick-serp", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ query: serpQuery, count: Number(serpCount), country: serpCountry, language: serpLanguage, filterSocial: serpFilter }),
      });
      const data = await res.json() as { added?: number; updated?: number; skipped?: number; error?: string };
      if (!res.ok) throw new Error(data.error || "Fehler");
      toast.success(`${data.added} Leads hinzugefügt, ${data.skipped} übersprungen`);
      loadLeads(); loadStats(); loadSearchTerms();
    } catch (err) {
      toast.error(err instanceof Error ? err.message : "Fehler");
    } finally {
      setSerpRunning(false);
    }
  }

  async function bulkAction(action: "status" | "priority" | "tag" | "delete", value: string) {
    if (!selected.size) return;
    if (action === "delete" && !confirm(`${selected.size} Leads löschen?`)) return;
    const res = await fetch("/api/leads/bulk", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({ ids: Array.from(selected), action, value }),
    });
    if (res.ok) {
      const d = await res.json() as { updated: number };
      toast.success(`${d.updated} Leads aktualisiert`);
      setSelected(new Set());
      loadLeads(); loadStats(); loadSearchTerms();
    }
  }

  function exportFile(format: "csv" | "xlsx", emailOnly = false) {
    const params = new URLSearchParams({ search: debouncedSearch, sortBy, sortDir, format });
    filterStatus.forEach(s => params.append("status", s));
    filterSource.forEach(s => params.append("sourceTab", s));
    if (filterHasEmail) params.set("hasEmail", filterHasEmail);
    if (emailOnly) params.set("emailOnly", "true");
    window.open(`/api/leads/export?${params}`, "_blank");
  }

  function SortIcon({ field }: { field: string }) {
    if (sortBy !== field) return <ArrowUpDown className="w-3 h-3 text-gray-600" />;
    return sortDir === "asc" ? <ArrowUp className="w-3 h-3 text-purple-400" /> : <ArrowDown className="w-3 h-3 text-purple-400" />;
  }

  const allSelected = leads.length > 0 && leads.every(l => selected.has(l.id));

  return (
    <div className="space-y-5 max-w-full px-6 py-6">
      {/* Header */}
      <div className="relative rounded-2xl bg-gradient-to-r from-purple-600/10 to-blue-600/10 border border-[#1e1e2e] p-6 overflow-hidden">
        <div className="absolute inset-0 bg-gradient-to-br from-purple-500/5 to-transparent" />
        <div className="relative flex items-center justify-between">
          <div>
            <div className="flex items-center gap-2 text-sm text-purple-400 mb-2">
              <Database className="w-4 h-4" />
              <span>Zentrale Datenbank</span>
            </div>
            <h1 className="text-2xl font-bold text-white">🗄️ Leadspeicher</h1>
            <p className="text-gray-400 mt-1 text-sm">Alle Leads an einem Ort.</p>
          </div>
          <div className="flex gap-2">
            <button
              onClick={() => setExportOpen(v => !v)}
              className="flex items-center gap-1.5 px-3 py-1.5 rounded-lg border border-purple-500/30 bg-purple-500/10 text-purple-300 hover:bg-purple-500/20 text-sm transition-all"
            >
              <Download className="w-3.5 h-3.5" /> Export
            </button>
          </div>
        </div>
      </div>

      {/* Export dropdown — outside overflow-hidden header */}
      {exportOpen && (
        <>
          <div className="fixed inset-0 z-40" onClick={() => setExportOpen(false)} />
          <div className="fixed top-20 right-6 z-50 bg-[#1a1a28] border border-[#2e2e3e] rounded-lg shadow-2xl p-1 min-w-[230px]">
            {([
              ["Aktuelle Ansicht", () => exportFile("xlsx")],
              ["Nur mit E-Mail", () => exportFile("xlsx", true)],
            ] as [string, () => void][]).map(([label, fn]) => (
              <button key={label} onClick={() => { fn(); setExportOpen(false); }}
                className="w-full text-left px-3 py-2 text-sm text-gray-300 hover:bg-[#2e2e3e] rounded">
                {label}
              </button>
            ))}
          </div>
        </>
      )}

      {/* Stats */}
      {stats && (
        <div className="grid grid-cols-4 gap-4">
          {[
            { label: "Leads gesamt", value: stats.total, color: "#a78bfa" },
            { label: "Neu / Nicht kontaktiert", value: stats.new, color: "#60a5fa" },
            { label: "Kontaktiert / In Bearbeitung", value: stats.contacted, color: "#2dd4bf" },
            { label: "Mit verifizierter E-Mail", value: stats.withEmail, color: "#34d399" },
          ].map(({ label, value, color }) => (
            <Card key={label} className="bg-[#111118] border-[#1e1e2e] p-4">
              <p className="text-xs text-gray-500 mb-1">{label}</p>
              <div className="flex items-end justify-between">
                <p className="text-2xl font-bold text-white">{value.toLocaleString()}</p>
                <Sparkline data={stats.dailyCounts.map(d => d.count)} color={color} />
              </div>
            </Card>
          ))}
        </div>
      )}

      {/* Quick SERP */}
      <Card className="bg-[#111118] border-[#1e1e2e] overflow-hidden">
        <button
          onClick={() => setSerpOpen(!serpOpen)}
          className="w-full flex items-center justify-between px-5 py-3.5 text-sm font-medium text-gray-300 hover:text-white transition-colors"
        >
          <span className="flex items-center gap-2"><Search className="w-4 h-4 text-purple-400" />⚡ Schnell neue Suche</span>
          {serpOpen ? <ChevronUp className="w-4 h-4" /> : <ChevronDown className="w-4 h-4" />}
        </button>
        {serpOpen && (
          <div className="px-5 pb-5 border-t border-[#1e1e2e] pt-4 space-y-4">
            <div className="grid grid-cols-2 gap-3">
              <div className="col-span-2">
                <Input
                  placeholder='Suchbegriff, z.B. "Dachdecker Freiburg"'
                  value={serpQuery}
                  onChange={e => setSerpQuery(e.target.value)}
                  onKeyDown={e => e.key === "Enter" && runQuickSerp()}
                  className="bg-[#0d0d18] border-[#2e2e3e] text-white placeholder:text-gray-600 focus:border-purple-500"
                />
              </div>
              <Select value={serpCount} onValueChange={v => setSerpCount(v ?? "25")}>
                <SelectTrigger className="bg-[#0d0d18] border-[#2e2e3e] text-white">
                  <SelectValue />
                </SelectTrigger>
                <SelectContent className="bg-[#111118] border-[#2e2e3e]">
                  {["10", "25", "50", "100"].map(v => (
                    <SelectItem key={v} value={v} className="text-gray-300">{v} Ergebnisse</SelectItem>
                  ))}
                </SelectContent>
              </Select>
            </div>
            <div className="flex items-center justify-between">
              <label className="flex items-center gap-2 text-sm text-gray-400 cursor-pointer">
                <input type="checkbox" checked={serpFilter} onChange={e => setSerpFilter(e.target.checked)} className="rounded" />
                Social-Media / Verzeichnisse herausfiltern
              </label>
              <Button
                onClick={runQuickSerp}
                disabled={serpRunning || !serpQuery.trim()}
                className="bg-gradient-to-r from-purple-500 to-blue-600 hover:from-purple-600 hover:to-blue-700 text-white font-medium px-6"
              >
                {serpRunning ? "Suche läuft..." : "🔍 SERP Capture starten"}
              </Button>
            </div>
          </div>
        )}
      </Card>

      {/* Filter Bar */}
      <Card className="bg-[#111118] border-[#1e1e2e] p-4 space-y-3">
        <div className="flex items-center gap-3 flex-wrap">
          {/* Search */}
          <div className="relative flex-1 min-w-[200px]">
            <Search className="absolute left-2.5 top-1/2 -translate-y-1/2 w-3.5 h-3.5 text-gray-500" />
            <input
              value={search}
              onChange={e => setSearch(e.target.value)}
              placeholder="Domain, Firma, Name, E-Mail suchen..."
              className="w-full bg-[#0d0d18] border border-[#2e2e3e] rounded-lg pl-8 pr-3 py-1.5 text-sm text-white outline-none focus:border-purple-500"
            />
          </div>

          {/* Has Email toggle */}
          <div className="flex gap-1 bg-[#0d0d18] border border-[#2e2e3e] rounded-lg p-1">
            {[["", "Alle"], ["yes", "Mit E-Mail"], ["no", "Ohne E-Mail"]].map(([v, l]) => (
              <button key={v} onClick={() => { setFilterHasEmail(v); setPage(1); }}
                className={`px-2.5 py-1 rounded text-xs font-medium transition-all ${filterHasEmail === v ? "bg-purple-500/30 text-purple-300" : "text-gray-500 hover:text-gray-300"}`}>
                {l}
              </button>
            ))}
          </div>

          {/* Kontaktiert toggle */}
          <button
            onClick={() => { setFilterContacted(v => !v); setPage(1); }}
            className={`px-2.5 py-1.5 rounded-lg text-xs font-medium border transition-all ${
              filterContacted
                ? "bg-teal-500/20 text-teal-300 border-teal-500/30"
                : "bg-[#0d0d18] text-gray-500 border-[#2e2e3e] hover:text-gray-300 hover:border-[#4e4e6e]"
            }`}
          >
            Kontaktiert
          </button>

          {/* Favoriten toggle */}
          <button
            onClick={() => { setFilterFavorite(v => !v); setPage(1); }}
            className={`px-2.5 py-1.5 rounded-lg text-xs font-medium border transition-all ${
              filterFavorite
                ? "bg-amber-500/20 text-amber-300 border-amber-500/30"
                : "bg-[#0d0d18] text-gray-500 border-[#2e2e3e] hover:text-gray-300 hover:border-[#4e4e6e]"
            }`}
          >
            ★ Favoriten
          </button>

          {/* Clear + count */}
          <div className="flex items-center gap-2 ml-auto">
            {(search || filterHasEmail || filterContacted || filterFavorite || filterSearchTerms.length) && (
              <button onClick={clearFilters} className="text-xs text-gray-500 hover:text-white flex items-center gap-1">
                <X className="w-3 h-3" /> Filter zurücksetzen
              </button>
            )}
            <span className="text-xs text-gray-500">{total.toLocaleString()} Leads</span>
          </div>
        </div>

      </Card>

      {/* Bulk Actions */}
      {selected.size > 0 && (
        <div className="flex items-center gap-3 bg-purple-500/10 border border-purple-500/20 rounded-xl px-4 py-2.5">
          <span className="text-sm text-purple-300 font-medium">{selected.size} ausgewählt</span>
          <div className="flex gap-2 flex-wrap">
            <div className="flex gap-1">
              <input
                value={bulkTag}
                onChange={e => setBulkTag(e.target.value)}
                placeholder="Tag hinzufügen..."
                className="bg-[#1a1a28] border border-[#2e2e3e] text-gray-300 text-xs rounded px-2 py-1 w-32 outline-none"
              />
              <button onClick={() => { if (bulkTag) { bulkAction("tag", bulkTag); setBulkTag(""); } }}
                className="text-xs px-2 py-1 rounded bg-[#2e2e3e] text-gray-300 hover:bg-[#3e3e5e]">
                <Tag className="w-3 h-3" />
              </button>
            </div>
            <button onClick={() => bulkAction("delete", "")}
              className="flex items-center gap-1 text-xs px-2.5 py-1 rounded bg-red-500/20 text-red-300 border border-red-500/30 hover:bg-red-500/30">
              <Trash2 className="w-3 h-3" /> Löschen
            </button>
            <button onClick={() => setSelected(new Set())} className="text-xs text-gray-500 hover:text-white px-2">✕</button>
          </div>
        </div>
      )}

      {/* Table */}
      <Card className="bg-[#111118] border-[#1e1e2e] overflow-hidden">
        <div className="overflow-x-auto">
          <table className="w-full text-sm">
            <thead>
              <tr className="border-b border-[#1e1e2e]">
                <th className="px-3 py-2.5 text-left">
                  <button onClick={() => {
                    if (allSelected) setSelected(new Set());
                    else setSelected(new Set(leads.map(l => l.id)));
                  }}>
                    {allSelected
                      ? <CheckSquare className="w-4 h-4 text-purple-400" />
                      : <Square className="w-4 h-4 text-gray-600" />}
                  </button>
                </th>
                {[
                  ["companyName", "Unternehmen"],
                  ["contactName", "Kontakt"],
                  ["phone", "Telefon"],
                  ["email", "E-Mail"],
                  ["sourceTerm", "Suchbegriff"],
                  ["capturedAt", "Erfasst"],
                ].map(([field, label]) => (
                  <th key={field} className="px-3 py-2.5 text-left text-xs font-medium text-gray-500 whitespace-nowrap">
                    <button onClick={() => toggleSort(field)} className="flex items-center gap-1 hover:text-gray-300">
                      {label} <SortIcon field={field} />
                    </button>
                  </th>
                ))}
                <th className="px-3 py-2.5 text-left text-xs font-medium text-gray-500">Tags</th>
                <th className="px-3 py-2.5 text-right text-xs font-medium text-gray-500">Aktionen</th>
              </tr>
            </thead>
            <tbody>
              {loading && !leads.length ? (
                <tr><td colSpan={7} className="px-4 py-8 text-center text-gray-500 text-sm">Lädt...</td></tr>
              ) : leads.length === 0 ? (
                <tr>
                  <td colSpan={7} className="px-4 py-16 text-center">
                    <Database className="w-8 h-8 text-gray-700 mx-auto mb-3" />
                    <p className="text-gray-500 text-sm">
                      {(search || filterSource.length || filterContacted || filterFavorite)
                        ? "Keine Leads für diese Filter."
                        : "Noch keine Leads. Pipeline ausführen oder Quick SERP nutzen."}
                    </p>
                    {search && (
                      <button onClick={clearFilters} className="mt-2 text-xs text-purple-400 hover:underline">Filter zurücksetzen</button>
                    )}
                  </td>
                </tr>
              ) : leads.map((lead, i) => {
                const tags: string[] = JSON.parse(lead.tags || "[]");
                const isSelected = selected.has(lead.id);
                const cfg = STATUS_CONFIG[lead.status] || STATUS_CONFIG.new;
                const src = SOURCE_CONFIG[lead.sourceTab];
                const isFavorite = tags.includes("favorit");
                const isContacted = tags.includes("kontaktiert");

                return (
                  <tr
                    key={lead.id}
                    onClick={() => setPanelLead(lead)}
                    className={`border-b border-[#1a1a28] cursor-pointer transition-colors hover:bg-[#1a1a28] ${
                      isSelected ? "bg-[#1a1a2e]" : i % 2 === 0 ? "bg-[#111118]" : "bg-[#0f0f16]"
                    }`}
                  >
                    <td className="px-3 py-2.5" onClick={e => e.stopPropagation()}>
                      <button onClick={() => {
                        setSelected(prev => {
                          const n = new Set(prev);
                          if (n.has(lead.id)) n.delete(lead.id); else n.add(lead.id);
                          return n;
                        });
                      }}>
                        {isSelected
                          ? <CheckSquare className="w-4 h-4 text-purple-400" />
                          : <Square className="w-4 h-4 text-gray-600" />}
                      </button>
                    </td>
                    <td className="px-3 py-2.5 max-w-[220px]">
                      <p className="text-sm text-white truncate font-medium">{lead.companyName || "–"}</p>
                      <p className="text-xs text-gray-500 truncate">{lead.domain}</p>
                      {(lead.description || lead.industry) && (
                        <p className="text-[10px] text-gray-600 truncate mt-0.5" title={lead.description || lead.industry || ""}>
                          {lead.industry ? `${lead.industry}${lead.description ? " · " + lead.description : ""}` : lead.description}
                        </p>
                      )}
                    </td>
                    <td className="px-3 py-2.5 max-w-[160px]">
                      <p className="text-sm text-gray-300 truncate">{lead.contactName || "–"}</p>
                      {lead.contactTitle && <p className="text-xs text-gray-600 truncate">{lead.contactTitle}</p>}
                    </td>
                    <td className="px-3 py-2.5 max-w-[160px]">
                      {lead.phone ? (
                        <a href={`tel:${lead.phone}`} onClick={e => e.stopPropagation()}
                          className="text-xs text-gray-300 hover:text-white whitespace-nowrap">
                          {lead.phone}
                        </a>
                      ) : lead.address ? (
                        <p className="text-xs text-gray-500 truncate" title={lead.address}>{lead.address}</p>
                      ) : (
                        <span className="text-xs text-gray-600">–</span>
                      )}
                      {lead.phone && lead.address && (
                        <p className="text-[11px] text-gray-600 truncate" title={lead.address}>{lead.address}</p>
                      )}
                    </td>
                    <td className="px-3 py-2.5 max-w-[200px]" onClick={e => e.stopPropagation()}>
                      {lead.email ? (
                        <button
                          onClick={() => { navigator.clipboard.writeText(lead.email!); toast.success("E-Mail kopiert"); }}
                          className="text-xs font-mono text-green-400 hover:text-green-300 truncate block max-w-full"
                          title={lead.email}
                        >
                          {lead.email}
                        </button>
                      ) : (
                        <span className="text-xs text-gray-600">–</span>
                      )}
                    </td>
                    <td className="px-3 py-2.5 max-w-[160px]">
                      {lead.sourceTerm ? (
                        <button
                          onClick={e => { e.stopPropagation(); toggleFilter(filterSearchTerms, setFilterSearchTerms, lead.sourceTerm!); setPage(1); }}
                          className={`text-xs px-2 py-0.5 rounded-full border transition-all truncate max-w-full block ${
                            filterSearchTerms.includes(lead.sourceTerm)
                              ? "bg-amber-500/20 text-amber-300 border-amber-500/30"
                              : "bg-[#1a1a28] text-gray-400 border-[#2e2e3e] hover:border-amber-500/30 hover:text-amber-300"
                          }`}
                          title={lead.sourceTerm}
                        >
                          🔎 {lead.sourceTerm}
                        </button>
                      ) : (
                        <span className="text-xs text-gray-600">–</span>
                      )}
                    </td>
                    <td className="px-3 py-2.5 whitespace-nowrap" title={new Date(lead.capturedAt).toLocaleString("de-DE")}>
                      <span className="text-xs text-gray-500">{new Date(lead.capturedAt).toLocaleDateString("de-DE", { day: "2-digit", month: "2-digit", year: "numeric" })}</span>
                    </td>
                    <td className="px-3 py-2.5">
                      <div className="flex gap-1 flex-wrap max-w-[120px]">
                        {tags.slice(0, 2).map(tag => (
                          <span key={tag} className={`text-[10px] px-1.5 py-0.5 rounded-full border ${tagColor(tag)}`}>{tag}</span>
                        ))}
                        {tags.length > 2 && <span className="text-[10px] text-gray-500">+{tags.length - 2}</span>}
                      </div>
                    </td>
                    <td className="px-3 py-2.5" onClick={e => e.stopPropagation()}>
                      <div className="flex items-center gap-1 justify-end">
                        <button
                          onClick={e => {
                            e.stopPropagation();
                            if (isContacted) {
                              updateLead(lead.id, { tags: JSON.stringify(tags.filter(t => t !== "kontaktiert")) });
                            } else {
                              updateLead(lead.id, { tags: JSON.stringify([...tags, "kontaktiert"]) });
                            }
                          }}
                          title="Kontaktiert"
                          className={isContacted
                            ? "p-1 rounded text-teal-400 bg-teal-500/10 transition-all"
                            : "p-1 rounded text-gray-600 hover:text-teal-400 hover:bg-teal-500/10 transition-all"}>
                          <Mail className="w-3.5 h-3.5" />
                        </button>
                        <button
                          onClick={e => {
                            e.stopPropagation();
                            if (isFavorite) {
                              updateLead(lead.id, { tags: JSON.stringify(tags.filter(t => t !== "favorit")) });
                            } else {
                              updateLead(lead.id, { tags: JSON.stringify([...tags, "favorit"]) });
                            }
                          }}
                          title="Favorit"
                          className={isFavorite
                            ? "p-1 rounded text-amber-400 bg-amber-500/10 transition-all"
                            : "p-1 rounded text-gray-600 hover:text-amber-400 hover:bg-amber-500/10 transition-all"}>
                          <Star className="w-3.5 h-3.5" />
                        </button>
                        {lead.domain && (
                          <a href={`https://${lead.domain}`} target="_blank" rel="noreferrer"
                            title="Website öffnen"
                            className="p-1 rounded text-gray-600 hover:text-blue-400 hover:bg-blue-500/10 transition-all">
                            <ExternalLink className="w-3.5 h-3.5" />
                          </a>
                        )}
                        <button onClick={() => deleteLead(lead.id)}
                          className="p-1 rounded text-gray-600 hover:text-red-400 hover:bg-red-500/10 transition-all">
                          <Trash2 className="w-3.5 h-3.5" />
                        </button>
                      </div>
                    </td>
                  </tr>
                );
              })}
            </tbody>
          </table>
        </div>

        {/* Pagination */}
        {pages > 1 && (
          <div className="flex items-center justify-between px-4 py-3 border-t border-[#1e1e2e]">
            <div className="flex items-center gap-2">
              <span className="text-xs text-gray-500">Zeilen pro Seite:</span>
              <select
                value={perPage}
                onChange={e => { setPerPage(Number(e.target.value)); setPage(1); }}
                className="bg-[#0d0d18] border border-[#2e2e3e] text-gray-300 text-xs rounded px-2 py-1"
              >
                {[25, 50, 100].map(n => <option key={n} value={n}>{n}</option>)}
              </select>
            </div>
            <div className="flex items-center gap-1">
              <button disabled={page <= 1} onClick={() => setPage(p => p - 1)}
                className="px-2.5 py-1 rounded text-xs text-gray-400 border border-[#2e2e3e] hover:border-[#4e4e6e] disabled:opacity-30">
                ‹ Zurück
              </button>
              {Array.from({ length: Math.min(7, pages) }, (_, i) => {
                let p = i + 1;
                if (pages > 7) {
                  if (page <= 4) p = i + 1;
                  else if (page >= pages - 3) p = pages - 6 + i;
                  else p = page - 3 + i;
                }
                return (
                  <button key={p} onClick={() => setPage(p)}
                    className={`w-7 h-7 rounded text-xs ${page === p ? "bg-purple-500/30 text-purple-300 border border-purple-500/30" : "text-gray-500 hover:text-gray-300"}`}>
                    {p}
                  </button>
                );
              })}
              <button disabled={page >= pages} onClick={() => setPage(p => p + 1)}
                className="px-2.5 py-1 rounded text-xs text-gray-400 border border-[#2e2e3e] hover:border-[#4e4e6e] disabled:opacity-30">
                Weiter ›
              </button>
            </div>
            <span className="text-xs text-gray-500">Seite {page} von {pages}</span>
          </div>
        )}
      </Card>

      {/* Side Panel */}
      {panelLead && (
        <SidePanel
          lead={panelLead}
          onClose={() => setPanelLead(null)}
          onUpdate={updated => {
            setPanelLead(prev => prev ? { ...prev, ...updated } : prev);
            setLeads(prev => prev.map(l => l.id === panelLead.id ? { ...l, ...updated } : l));
          }}
          onDelete={id => { deleteLead(id); }}
        />
      )}
    </div>
  );
}
