import { useState, useEffect, useCallback, useRef } from "react";
import { useAlert } from "../context/AlertContext";
import { useAuth } from "../context/AuthContext";
import { Link } from "react-router-dom";
import { motion, AnimatePresence } from "framer-motion";
import AdminDatePicker from "../components/AdminDatePicker";
import ConfirmModal from "../components/ConfirmModal";
import useModalLock from "../hooks/useModalLock";
import {
  formatTime,
  calculateWorkMinutes,
  formatMinutes,
} from "../utils/attendanceHelpers";
import FormField from "../components/FormField";
import Forbidden from "../components/Forbidden";
import apiFetch from "../utils/api";

const API_BASE = "/api/admin";

interface ShiftRecord {
  id: number;
  user_id: number;
  shift_date: string;
  arrival_time?: string | null;
  departure_time?: string | null;
  break_start?: string | null;
  break_end?: string | null;
  notes?: string | null;
  project_id?: number | null;
  project_logs?: ProjectLog[];
}

interface ProjectLog {
  id?: number;
  project_id?: number;
  project_name?: string;
  started_at?: string;
  ended_at?: string | null;
}

interface Project {
  id: number;
  name: string;
  project_number: string;
}

interface LeaveBalance {
  vacation_total: number;
  vacation_used: number;
  vacation_remaining: number;
  sick_used: number;
}

interface MonthlyFund {
  month_name: string;
  fund: number;
  worked: number;
  covered: number;
  remaining: number;
  overtime: number;
  leave_hours: number;
  vacation_hours: number;
  sick_hours: number;
  holiday_hours: number;
  unpaid_hours: number;
}

interface AttendanceData {
  ongoing_shift: ShiftRecord | null;
  today_shifts: ShiftRecord[];
  date: string;
  leave_balance: LeaveBalance;
  monthly_fund: MonthlyFund | null;
  project_logs: ProjectLog[];
  active_project_id: number | null;
}

function pluralizeDays(n: number) {
  if (n === 1) return "den";
  if (n >= 2 && n <= 4) return "dny";
  return "dnů";
}

function getFundBarBackground(fund: MonthlyFund) {
  if (fund.overtime > 0)
    return "linear-gradient(135deg, var(--warning), #d97706)";
  if (fund.covered >= fund.fund)
    return "linear-gradient(135deg, var(--success), #059669)";
  return "var(--gradient)";
}

export default function Attendance() {
  const alert = useAlert();
  const { hasPermission } = useAuth();
  const [loading, setLoading] = useState(true);
  const [submitting, setSubmitting] = useState(false);
  const [data, setData] = useState<AttendanceData>({
    ongoing_shift: null,
    today_shifts: [],
    date: "",
    leave_balance: {
      vacation_total: 160,
      vacation_used: 0,
      vacation_remaining: 160,
      sick_used: 0,
    },
    monthly_fund: null,
    project_logs: [],
    active_project_id: null,
  });
  const [showLeaveModal, setShowLeaveModal] = useState(false);
  const [leaveForm, setLeaveForm] = useState({
    leave_type: "vacation",
    date_from: new Date().toISOString().split("T")[0],
    date_to: new Date().toISOString().split("T")[0],
    notes: "",
  });
  const [requestSubmitting, setRequestSubmitting] = useState(false);
  const [notes, setNotes] = useState("");
  const [projects, setProjects] = useState<Project[]>([]);
  const [switchingProject, setSwitchingProject] = useState(false);
  const [projectLogs, setProjectLogs] = useState<ProjectLog[]>([]);
  const [activeProjectId, setActiveProjectId] = useState<number | null>(null);
  const [gpsConfirm, setGpsConfirm] = useState<{
    show: boolean;
    action: string | null;
  }>({ show: false, action: null });
  const geoAbortRef = useRef<AbortController | null>(null);

  useEffect(() => {
    return () => {
      if (geoAbortRef.current) geoAbortRef.current.abort();
    };
  }, []);

  const fetchData = useCallback(async () => {
    try {
      const response = await apiFetch(`${API_BASE}/attendance/status`);
      if (response.status === 401) return;
      const result = await response.json();
      if (result.success) {
        setData(result.data);
        setNotes(result.data.ongoing_shift?.notes || "");
        setProjectLogs(result.data.project_logs || []);
        setActiveProjectId(result.data.active_project_id || null);
      }
    } catch {
      alert.error("Nepodařilo se načíst data");
    } finally {
      setLoading(false);
    }
  }, [alert]);

  useEffect(() => {
    fetchData();
  }, [fetchData]);

  useEffect(() => {
    const loadProjects = async () => {
      try {
        const response = await apiFetch(
          `${API_BASE}/attendance?action=projects`,
        );
        const result = await response.json();
        if (result.success) {
          const items = Array.isArray(result.data) ? result.data : [];
          setProjects(items);
        }
      } catch {
        // silent - projects are supplementary
      }
    };
    loadProjects();
  }, []);

  useModalLock(showLeaveModal);

  if (!hasPermission("attendance.record")) return <Forbidden />;

  const handlePunch = (action: string) => {
    setSubmitting(true);

    if (!navigator.geolocation) {
      alert.warning("GPS není dostupná");
      submitPunch(action, {});
      return;
    }

    navigator.geolocation.getCurrentPosition(
      (position) => {
        const { latitude, longitude, accuracy } = position.coords;
        submitPunch(action, { latitude, longitude, accuracy, address: "" });

        if (geoAbortRef.current) geoAbortRef.current.abort();
        const controller = new AbortController();
        geoAbortRef.current = controller;
        fetch(
          `https://nominatim.openstreetmap.org/reverse?format=json&lat=${latitude}&lon=${longitude}&zoom=18&addressdetails=1`,
          {
            headers: { "Accept-Language": "cs" },
            signal: controller.signal,
          },
        )
          .then((r) => r.json())
          .then((geoData) => {
            if (geoData.display_name) {
              apiFetch(`${API_BASE}/attendance/update-address`, {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify({
                  latitude,
                  longitude,
                  address: geoData.display_name,
                  punch_action: action,
                }),
              }).catch(() => {});
            }
          })
          .catch(() => {});
      },
      (geoError) => {
        let errorMsg = "Nepodařilo se získat polohu";
        if (geoError.code === geoError.PERMISSION_DENIED) {
          errorMsg = "Přístup k poloze byl zamítnut";
        } else if (geoError.code === geoError.TIMEOUT) {
          errorMsg = "Vypršel časový limit";
        }
        alert.error(errorMsg);
        setGpsConfirm({ show: true, action });
      },
      { enableHighAccuracy: true, timeout: 10000, maximumAge: 60000 },
    );
  };

  const submitPunch = async (
    action: string,
    gpsData: Record<string, unknown> = {},
  ) => {
    try {
      const response = await apiFetch(`${API_BASE}/attendance`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ punch_action: action, ...gpsData }),
      });
      if (response.status === 401) return;

      const result = await response.json();
      setSubmitting(false);

      if (result.success) {
        await fetchData();
        setTimeout(() => {
          alert.success(result.data?.message || result.message || "Uloženo");
        }, 300);
      } else {
        alert.error(result.error);
      }
    } catch {
      setSubmitting(false);
      alert.error("Chyba připojení");
    }
  };

  const handleBreak = async () => {
    setSubmitting(true);
    try {
      const response = await apiFetch(`${API_BASE}/attendance`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ punch_action: "break_start" }),
      });
      if (response.status === 401) return;

      const result = await response.json();
      if (result.success) {
        await fetchData();
        alert.success(
          result.data?.message || result.message || "Přestávka zaznamenána",
        );
      } else {
        alert.error(result.error);
      }
    } catch {
      alert.error("Chyba připojení");
    } finally {
      setSubmitting(false);
    }
  };

  const handleSaveNotes = async () => {
    try {
      const response = await apiFetch(`${API_BASE}/attendance/notes`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ notes }),
      });
      if (response.status === 401) return;

      const result = await response.json();
      if (result.success) {
        alert.success("Poznámka byla uložena");
      } else {
        alert.error(result.error);
      }
    } catch {
      alert.error("Chyba připojení");
    }
  };

  const handleSwitchProject = async (newProjectId: string | null) => {
    setSwitchingProject(true);
    try {
      const response = await apiFetch(`${API_BASE}/attendance/switch-project`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ project_id: newProjectId || null }),
      });
      if (response.status === 401) return;

      const result = await response.json();
      if (result.success) {
        await fetchData();
        alert.success(
          result.data?.message || result.message || "Projekt přepnut",
        );
      } else {
        alert.error(result.error);
      }
    } catch {
      alert.error("Chyba připojení");
    } finally {
      setSwitchingProject(false);
    }
  };

  const calculateBusinessDays = (from: string, to: string) => {
    if (!from || !to) return 0;
    const start = new Date(from);
    const end = new Date(to);
    if (end < start) return 0;
    let days = 0;
    const current = new Date(start);
    while (current <= end) {
      const day = current.getDay();
      if (day !== 0 && day !== 6) days++;
      current.setDate(current.getDate() + 1);
    }
    return days;
  };

  const handleRequestSubmit = async () => {
    setRequestSubmitting(true);
    try {
      const response = await apiFetch(`${API_BASE}/leave-requests`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(leaveForm),
      });
      if (response.status === 401) return;

      const result = await response.json();
      if (result.success) {
        setShowLeaveModal(false);
        await fetchData();
        await new Promise((resolve) => setTimeout(resolve, 300));
        alert.success(
          result.data?.message || result.message || "Žádost odeslána",
        );
        setLeaveForm({
          leave_type: "vacation",
          date_from: new Date().toISOString().split("T")[0],
          date_to: new Date().toISOString().split("T")[0],
          notes: "",
        });
      } else {
        alert.error(result.error);
      }
    } catch {
      alert.error("Chyba připojení");
    } finally {
      setRequestSubmitting(false);
    }
  };

  if (loading) {
    return (
      <div className="admin-skeleton" style={{ padding: 0, gap: "1.5rem" }}>
        <div
          className="admin-skeleton-row"
          style={{ justifyContent: "space-between" }}
        >
          <div>
            <div
              className="admin-skeleton-line h-8"
              style={{ width: "200px", marginBottom: "0.5rem" }}
            />
            <div className="admin-skeleton-line" style={{ width: "140px" }} />
          </div>
        </div>
        <div style={{ display: "flex", gap: "1.5rem" }}>
          <div className="admin-card" style={{ flex: 2 }}>
            <div className="admin-skeleton" style={{ gap: "1.25rem" }}>
              <div
                className="admin-skeleton-line h-8"
                style={{ width: "120px", marginBottom: "0.5rem" }}
              />
              <div
                className="admin-skeleton-line h-10"
                style={{ width: "180px" }}
              />
              <div className="admin-skeleton-row">
                <div style={{ flex: 1 }}>
                  <div
                    className="admin-skeleton-line w-1/3"
                    style={{ marginBottom: "0.5rem" }}
                  />
                  <div
                    className="admin-skeleton-line w-1/4"
                    style={{ height: "10px" }}
                  />
                </div>
                <div style={{ flex: 1 }}>
                  <div
                    className="admin-skeleton-line w-1/3"
                    style={{ marginBottom: "0.5rem" }}
                  />
                  <div
                    className="admin-skeleton-line w-1/4"
                    style={{ height: "10px" }}
                  />
                </div>
              </div>
              <div
                className="admin-skeleton-line h-10"
                style={{ width: "100%", borderRadius: "8px" }}
              />
            </div>
          </div>
          <div
            style={{
              flex: 1,
              display: "flex",
              flexDirection: "column",
              gap: "1rem",
            }}
          >
            <div className="admin-card">
              <div className="admin-skeleton" style={{ gap: "1rem" }}>
                <div
                  className="admin-skeleton-line w-1/3"
                  style={{ marginBottom: "0.25rem" }}
                />
                <div
                  className="admin-skeleton-line h-8"
                  style={{ width: "80px" }}
                />
                <div
                  className="admin-skeleton-line"
                  style={{ width: "100%", height: "6px", borderRadius: "3px" }}
                />
              </div>
            </div>
            <div className="admin-card">
              <div className="admin-skeleton" style={{ gap: "1rem" }}>
                <div
                  className="admin-skeleton-line w-1/3"
                  style={{ marginBottom: "0.25rem" }}
                />
                <div
                  className="admin-skeleton-line h-8"
                  style={{ width: "80px" }}
                />
                <div
                  className="admin-skeleton-line"
                  style={{ width: "100%", height: "6px", borderRadius: "3px" }}
                />
              </div>
            </div>
          </div>
        </div>
      </div>
    );
  }

  const {
    ongoing_shift: ongoingShift,
    today_shifts: todayShifts,
    leave_balance: leaveBalance,
  } = data;
  const isOngoingShift = ongoingShift && !ongoingShift.departure_time;
  const completedToday = todayShifts.filter((s) => s.departure_time);
  const vacationDaysRemaining = Math.floor(leaveBalance.vacation_remaining / 8);
  const vacationHoursRemaining = leaveBalance.vacation_remaining % 8;

  return (
    <div>
      <motion.div
        className="admin-page-header"
        initial={{ opacity: 0, y: 12 }}
        animate={{ opacity: 1, y: 0 }}
        transition={{ duration: 0.25 }}
      >
        <div>
          <h1 className="admin-page-title">Docházka</h1>
          <p className="admin-page-subtitle">
            {new Date().toLocaleDateString("cs-CZ", {
              weekday: "long",
              day: "numeric",
              month: "long",
              year: "numeric",
            })}
          </p>
        </div>
      </motion.div>

      <div className="attendance-layout">
        {/* Left Column - Clock In/Out */}
        <motion.div
          className="attendance-main"
          initial={{ opacity: 0, y: 12 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.25, delay: 0.06 }}
        >
          <div className="attendance-clock-card">
            <div className="attendance-clock-header">
              <div className="attendance-clock-status">
                {isOngoingShift ? (
                  <>
                    <span className="attendance-status-dot active" />
                    <span>Pracuji</span>
                  </>
                ) : (
                  <>
                    <span className="attendance-status-dot" />
                    <span>Nepracuji</span>
                  </>
                )}
              </div>
              <div className="attendance-clock-time">
                {new Date().toLocaleTimeString("cs-CZ", {
                  hour: "2-digit",
                  minute: "2-digit",
                })}
              </div>
            </div>

            {isOngoingShift ? (
              <>
                <div className="attendance-shift-info">
                  <div className="attendance-shift-row">
                    <div className="attendance-shift-item">
                      <span className="attendance-shift-label">Příchod</span>
                      <span className="attendance-shift-value success">
                        {formatTime(ongoingShift.arrival_time)}
                      </span>
                    </div>
                    <div className="attendance-shift-item">
                      <span className="attendance-shift-label">Pauza</span>
                      <span
                        className={`attendance-shift-value ${ongoingShift.break_start ? "success" : ""}`}
                      >
                        {ongoingShift.break_start
                          ? `${formatTime(ongoingShift.break_start)} - ${formatTime(ongoingShift.break_end)}`
                          : "—"}
                      </span>
                    </div>
                    <div className="attendance-shift-item">
                      <span className="attendance-shift-label">Odchod</span>
                      <span className="attendance-shift-value">—</span>
                    </div>
                  </div>
                </div>

                {projects.length > 0 && (
                  <div className="attendance-project-section">
                    <div className="attendance-project-header">
                      <span className="attendance-shift-label">Projekt</span>
                      {activeProjectId ? (
                        <span className="admin-badge admin-badge-wrap text-sm">
                          {projects.find(
                            (p) => String(p.id) === String(activeProjectId),
                          )
                            ? `${projects.find((p) => String(p.id) === String(activeProjectId))!.project_number} – ${projects.find((p) => String(p.id) === String(activeProjectId))!.name}`
                            : `Projekt #${activeProjectId}`}
                        </span>
                      ) : (
                        <span className="text-muted text-sm">Žádný</span>
                      )}
                    </div>
                    <select
                      value={activeProjectId || ""}
                      onChange={(e) =>
                        handleSwitchProject(e.target.value || null)
                      }
                      disabled={switchingProject}
                      className="admin-form-select text-md"
                    >
                      <option value="">— Bez projektu —</option>
                      {projects.map((p) => (
                        <option key={p.id} value={p.id}>
                          {p.project_number} – {p.name}
                        </option>
                      ))}
                    </select>
                    {projectLogs.length > 0 && (
                      <div className="attendance-project-logs">
                        {projectLogs.map((log, i) => {
                          const start = new Date(log.started_at!);
                          const end = log.ended_at
                            ? new Date(log.ended_at)
                            : new Date();
                          const mins = Math.floor(
                            (end.getTime() - start.getTime()) / 60000,
                          );
                          const h = Math.floor(mins / 60);
                          const mm = mins % 60;
                          return (
                            <div
                              key={log.id || i}
                              className="attendance-project-log-item"
                            >
                              <span className="attendance-project-log-name">
                                {log.project_name ||
                                  `Projekt #${log.project_id}`}
                              </span>
                              <span className="attendance-project-log-time">
                                {formatTime(log.started_at)} –{" "}
                                {log.ended_at
                                  ? formatTime(log.ended_at)
                                  : "nyní"}
                              </span>
                              <span className="attendance-project-log-duration">
                                {h}:{String(mm).padStart(2, "0")} h
                              </span>
                            </div>
                          );
                        })}
                      </div>
                    )}
                  </div>
                )}

                <div className="attendance-clock-actions">
                  {!ongoingShift.break_start && (
                    <button
                      onClick={handleBreak}
                      disabled={submitting}
                      className="admin-btn admin-btn-secondary w-full"
                    >
                      Pauza (30 min)
                    </button>
                  )}
                  <button
                    onClick={() => handlePunch("departure")}
                    disabled={submitting}
                    className="admin-btn admin-btn-primary w-full"
                  >
                    {submitting ? "Zpracovávám..." : "Odchod"}
                  </button>
                  <button
                    onClick={() => setShowLeaveModal(true)}
                    className="admin-btn admin-btn-secondary w-full"
                  >
                    Žádost o nepřítomnost
                  </button>
                </div>

                <div className="attendance-notes">
                  <label className="attendance-notes-label">
                    Poznámka ke směně
                  </label>
                  <textarea
                    value={notes}
                    onChange={(e) => setNotes(e.target.value)}
                    placeholder="Co jste dělali během směny..."
                    className="admin-form-textarea"
                    rows={3}
                  />
                  <div className="mt-2">
                    <button
                      onClick={handleSaveNotes}
                      className="admin-btn admin-btn-secondary admin-btn-sm"
                    >
                      Uložit poznámku
                    </button>
                  </div>
                </div>
              </>
            ) : (
              <div className="attendance-clock-actions">
                <button
                  onClick={() => handlePunch("arrival")}
                  disabled={submitting}
                  className="admin-btn admin-btn-primary w-full"
                >
                  {submitting ? "Zpracovávám..." : "Příchod"}
                </button>

                <button
                  onClick={() => setShowLeaveModal(true)}
                  className="admin-btn admin-btn-secondary w-full"
                >
                  Žádost o nepřítomnost
                </button>
              </div>
            )}
          </div>

          {/* Completed Today */}
          {completedToday.length > 0 && (
            <div className="admin-card mt-6">
              <div className="admin-card-header">
                <h2 className="admin-card-title">Dnešní dokončené směny</h2>
              </div>
              <div className="admin-card-body">
                <div className="admin-table-responsive">
                  <table className="admin-table">
                    <thead>
                      <tr>
                        <th>Příchod</th>
                        <th>Pauza</th>
                        <th>Odchod</th>
                        <th>Odpracováno</th>
                        {projects.length > 0 && <th>Projekty</th>}
                      </tr>
                    </thead>
                    <tbody>
                      {completedToday.map((shift) => {
                        const shiftLogs = shift.project_logs || [];
                        return (
                          <tr key={shift.id}>
                            <td className="admin-mono">
                              {formatTime(shift.arrival_time)}
                            </td>
                            <td className="admin-mono">
                              {shift.break_start && shift.break_end
                                ? `${formatTime(shift.break_start)} - ${formatTime(shift.break_end)}`
                                : "—"}
                            </td>
                            <td className="admin-mono">
                              {formatTime(shift.departure_time)}
                            </td>
                            <td className="admin-mono">
                              {formatMinutes(calculateWorkMinutes(shift), true)}
                            </td>
                            {projects.length > 0 && (
                              <td>
                                {shiftLogs.length > 0 ? (
                                  <div
                                    style={{
                                      display: "flex",
                                      flexDirection: "column",
                                      gap: "0.25rem",
                                    }}
                                  >
                                    {shiftLogs.map((log, i) => {
                                      const mins = log.ended_at
                                        ? Math.floor(
                                            (new Date(log.ended_at).getTime() -
                                              new Date(
                                                log.started_at!,
                                              ).getTime()) /
                                              60000,
                                          )
                                        : 0;
                                      const h = Math.floor(mins / 60);
                                      const mm = mins % 60;
                                      return (
                                        <span
                                          key={log.id || i}
                                          style={{ fontSize: "12px" }}
                                        >
                                          {log.project_name ||
                                            `#${log.project_id}`}{" "}
                                          ({h}:{String(mm).padStart(2, "0")}h)
                                        </span>
                                      );
                                    })}
                                  </div>
                                ) : (
                                  "—"
                                )}
                              </td>
                            )}
                          </tr>
                        );
                      })}
                    </tbody>
                  </table>
                </div>
              </div>
            </div>
          )}
        </motion.div>

        {/* Right Column - Stats & Quick Links */}
        <motion.div
          className="attendance-sidebar"
          initial={{ opacity: 0, y: 12 }}
          animate={{ opacity: 1, y: 0 }}
          transition={{ duration: 0.25, delay: 0.06 }}
        >
          {/* Leave Balance Card */}
          <div className="attendance-balance-card">
            <h3 className="attendance-balance-title">
              Dovolená {new Date().getFullYear()}
            </h3>
            <div className="attendance-balance-value">
              <span className="attendance-balance-number">
                {vacationDaysRemaining}
              </span>
              <span className="attendance-balance-unit">
                {pluralizeDays(vacationDaysRemaining)}
                {vacationHoursRemaining > 0 && ` ${vacationHoursRemaining}h`}
              </span>
            </div>
            <div className="attendance-balance-detail">
              <span>Celkem: {leaveBalance.vacation_total}h</span>
              <span>Čerpáno: {leaveBalance.vacation_used}h</span>
            </div>
            <div className="attendance-balance-bar">
              <div
                className="attendance-balance-progress"
                style={{
                  width: `${(leaveBalance.vacation_remaining / leaveBalance.vacation_total) * 100}%`,
                }}
              />
            </div>
          </div>

          {/* Monthly Fund Card */}
          {data.monthly_fund && (
            <div
              className="admin-stat-card"
              style={{ flexDirection: "column", alignItems: "stretch" }}
            >
              <div
                style={{ display: "flex", alignItems: "center", gap: "1rem" }}
              >
                <div className="admin-stat-icon info">
                  <svg
                    width="24"
                    height="24"
                    viewBox="0 0 24 24"
                    fill="none"
                    stroke="currentColor"
                    strokeWidth="2"
                  >
                    <rect x="3" y="4" width="18" height="18" rx="2" ry="2" />
                    <line x1="16" y1="2" x2="16" y2="6" />
                    <line x1="8" y1="2" x2="8" y2="6" />
                    <line x1="3" y1="10" x2="21" y2="10" />
                  </svg>
                </div>
                <div className="admin-stat-content">
                  <span className="admin-stat-label">
                    {data.monthly_fund.month_name}
                  </span>
                  <span className="admin-stat-value">
                    {data.monthly_fund.worked}h / {data.monthly_fund.fund}h
                  </span>
                </div>
              </div>
              <div style={{ marginTop: "0.75rem" }}>
                <div
                  className="text-secondary text-sm"
                  style={{
                    display: "flex",
                    justifyContent: "space-between",
                    marginBottom: "0.5rem",
                  }}
                >
                  <span>Odpracováno: {data.monthly_fund.worked}h</span>
                  {data.monthly_fund.overtime > 0 ? (
                    <span className="text-warning fw-600">
                      Přesčas: +{data.monthly_fund.overtime}h
                    </span>
                  ) : (
                    <span>Zbývá: {data.monthly_fund.remaining}h</span>
                  )}
                </div>
                <div className="attendance-balance-bar">
                  <div
                    className="attendance-balance-progress"
                    style={{
                      width: `${Math.min(100, (data.monthly_fund.covered / data.monthly_fund.fund) * 100)}%`,
                      background: getFundBarBackground(data.monthly_fund),
                    }}
                  />
                </div>
                {data.monthly_fund.leave_hours > 0 && (
                  <div
                    className="text-muted text-xs"
                    style={{ marginTop: "0.375rem" }}
                  >
                    {"Pokryto: "}
                    {data.monthly_fund.covered}h (práce{" "}
                    {data.monthly_fund.worked}h
                    {data.monthly_fund.vacation_hours > 0 &&
                      ` + dovolená ${data.monthly_fund.vacation_hours}h`}
                    {data.monthly_fund.sick_hours > 0 &&
                      ` + nemoc ${data.monthly_fund.sick_hours}h`}
                    {data.monthly_fund.holiday_hours > 0 &&
                      ` + svátek ${data.monthly_fund.holiday_hours}h`}
                    {data.monthly_fund.unpaid_hours > 0 &&
                      ` + neplacené ${data.monthly_fund.unpaid_hours}h`}
                    )
                  </div>
                )}
              </div>
            </div>
          )}

          {/* Sick Leave Card */}
          <div className="admin-stat-card">
            <div className="admin-stat-icon danger">
              <svg
                width="24"
                height="24"
                viewBox="0 0 24 24"
                fill="none"
                stroke="currentColor"
                strokeWidth="2"
              >
                <path d="M22 12h-4l-3 9L9 3l-3 9H2" />
              </svg>
            </div>
            <div className="admin-stat-content">
              <span className="admin-stat-label">
                Nemoc {new Date().getFullYear()}
              </span>
              <span className="admin-stat-value">
                {leaveBalance.sick_used}h čerpáno
              </span>
            </div>
          </div>

          {/* Quick Links */}
          <div className="attendance-quick-links">
            <h4 className="attendance-quick-title">Rychlé odkazy</h4>
            <Link to="/attendance/requests" className="attendance-quick-link">
              <svg
                width="20"
                height="20"
                viewBox="0 0 24 24"
                fill="none"
                stroke="currentColor"
                strokeWidth="2"
              >
                <path d="M9 11l3 3L22 4" />
                <path d="M21 12v7a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h11" />
              </svg>
              <span>Moje žádosti</span>
              <svg
                width="16"
                height="16"
                viewBox="0 0 24 24"
                fill="none"
                stroke="currentColor"
                strokeWidth="2"
              >
                <path d="M9 18l6-6-6-6" />
              </svg>
            </Link>
            <Link to="/attendance/history" className="attendance-quick-link">
              <svg
                width="20"
                height="20"
                viewBox="0 0 24 24"
                fill="none"
                stroke="currentColor"
                strokeWidth="2"
              >
                <path d="M3 3v18h18" />
                <path d="M18.7 8l-5.1 5.2-2.8-2.7L7 14.3" />
              </svg>
              <span>Historie docházky</span>
              <svg
                width="16"
                height="16"
                viewBox="0 0 24 24"
                fill="none"
                stroke="currentColor"
                strokeWidth="2"
              >
                <path d="M9 18l6-6-6-6" />
              </svg>
            </Link>
            {hasPermission("attendance.admin") && (
              <Link to="/attendance/admin" className="attendance-quick-link">
                <svg
                  width="20"
                  height="20"
                  viewBox="0 0 24 24"
                  fill="none"
                  stroke="currentColor"
                  strokeWidth="2"
                >
                  <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2" />
                  <circle cx="9" cy="7" r="4" />
                  <path d="M23 21v-2a4 4 0 0 0-3-3.87" />
                  <path d="M16 3.13a4 4 0 0 1 0 7.75" />
                </svg>
                <span>Správa docházky</span>
                <svg
                  width="16"
                  height="16"
                  viewBox="0 0 24 24"
                  fill="none"
                  stroke="currentColor"
                  strokeWidth="2"
                >
                  <path d="M9 18l6-6-6-6" />
                </svg>
              </Link>
            )}
            {hasPermission("attendance.balances") && (
              <Link to="/attendance/balances" className="attendance-quick-link">
                <svg
                  width="20"
                  height="20"
                  viewBox="0 0 24 24"
                  fill="none"
                  stroke="currentColor"
                  strokeWidth="2"
                >
                  <path d="M12 2v20M17 5H9.5a3.5 3.5 0 0 0 0 7h5a3.5 3.5 0 0 1 0 7H6" />
                </svg>
                <span>Správa bilancí</span>
                <svg
                  width="16"
                  height="16"
                  viewBox="0 0 24 24"
                  fill="none"
                  stroke="currentColor"
                  strokeWidth="2"
                >
                  <path d="M9 18l6-6-6-6" />
                </svg>
              </Link>
            )}
          </div>
        </motion.div>
      </div>

      {/* Leave Modal */}
      <AnimatePresence>
        {showLeaveModal && (
          <motion.div
            className="admin-modal-overlay"
            initial={{ opacity: 0 }}
            animate={{ opacity: 1 }}
            exit={{ opacity: 0 }}
            transition={{ duration: 0.2 }}
          >
            <div
              className="admin-modal-backdrop"
              onClick={() => setShowLeaveModal(false)}
            />
            <motion.div
              className="admin-modal"
              initial={{ opacity: 0, scale: 0.95, y: 20 }}
              animate={{ opacity: 1, scale: 1, y: 0 }}
              exit={{ opacity: 0, scale: 0.95, y: 20 }}
              transition={{ duration: 0.2 }}
            >
              <div className="admin-modal-header">
                <h2 className="admin-modal-title">Žádost o nepřítomnost</h2>
              </div>

              <div className="admin-modal-body">
                <div className="admin-form">
                  <FormField label="Typ nepřítomnosti">
                    <select
                      value={leaveForm.leave_type}
                      onChange={(e) =>
                        setLeaveForm({
                          ...leaveForm,
                          leave_type: e.target.value,
                        })
                      }
                      className="admin-form-select"
                    >
                      <option value="vacation">Dovolená</option>
                      <option value="sick">Nemoc</option>
                      <option value="unpaid">Neplacené volno</option>
                    </select>
                  </FormField>

                  <div
                    style={{
                      display: "grid",
                      gridTemplateColumns: "1fr 1fr",
                      gap: "1rem",
                    }}
                  >
                    <FormField label="Od">
                      <AdminDatePicker
                        mode="date"
                        value={leaveForm.date_from}
                        onChange={(val: string) => {
                          setLeaveForm((prev) => ({
                            ...prev,
                            date_from: val,
                            date_to: prev.date_to < val ? val : prev.date_to,
                          }));
                        }}
                      />
                    </FormField>
                    <FormField label="Do">
                      <AdminDatePicker
                        mode="date"
                        value={leaveForm.date_to}
                        minDate={leaveForm.date_from}
                        onChange={(val: string) =>
                          setLeaveForm({ ...leaveForm, date_to: val })
                        }
                      />
                    </FormField>
                  </div>

                  {leaveForm.date_from && leaveForm.date_to && (
                    <div className="admin-form-group">
                      <div
                        style={{
                          display: "flex",
                          gap: "1.5rem",
                          padding: "0.75rem 1rem",
                          background: "var(--bg-tertiary)",
                          borderRadius: "var(--border-radius)",
                          fontSize: "0.875rem",
                        }}
                      >
                        <span>
                          <strong>
                            {calculateBusinessDays(
                              leaveForm.date_from,
                              leaveForm.date_to,
                            )}
                          </strong>{" "}
                          {(() => {
                            const d = calculateBusinessDays(
                              leaveForm.date_from,
                              leaveForm.date_to,
                            );
                            if (d === 1) return "pracovní den";
                            if (d >= 2 && d <= 4) return "pracovní dny";
                            return "pracovních dnů";
                          })()}
                        </span>
                        <span className="text-muted">
                          {calculateBusinessDays(
                            leaveForm.date_from,
                            leaveForm.date_to,
                          ) * 8}{" "}
                          hodin
                        </span>
                      </div>
                    </div>
                  )}

                  <FormField label="Poznámka">
                    <textarea
                      value={leaveForm.notes}
                      onChange={(e) =>
                        setLeaveForm({ ...leaveForm, notes: e.target.value })
                      }
                      placeholder="Volitelná poznámka..."
                      className="admin-form-textarea"
                      rows={2}
                    />
                  </FormField>
                </div>
              </div>

              <div className="admin-modal-footer">
                <button
                  type="button"
                  onClick={() => setShowLeaveModal(false)}
                  className="admin-btn admin-btn-secondary"
                  disabled={requestSubmitting}
                >
                  Zrušit
                </button>
                <button
                  type="button"
                  onClick={handleRequestSubmit}
                  disabled={
                    requestSubmitting ||
                    calculateBusinessDays(
                      leaveForm.date_from,
                      leaveForm.date_to,
                    ) === 0
                  }
                  className="admin-btn admin-btn-primary"
                >
                  {requestSubmitting ? "Odesílám..." : "Odeslat žádost"}
                </button>
              </div>
            </motion.div>
          </motion.div>
        )}
      </AnimatePresence>

      <ConfirmModal
        isOpen={gpsConfirm.show}
        onClose={() => {
          setGpsConfirm({ show: false, action: null });
          setSubmitting(false);
        }}
        onConfirm={() => {
          setGpsConfirm({ show: false, action: null });
          submitPunch(gpsConfirm.action!, {});
        }}
        title="GPS nedostupná"
        message="Nepodařilo se získat polohu. Chcete pokračovat bez GPS?"
        confirmText="Pokračovat"
        cancelText="Zrušit"
        type="warning"
      />
    </div>
  );
}