"use client";
import React, { useState, useEffect } from "react";
import { useI18n } from "@/lib/i18n";
import { useTheme } from "@/app/providers";
import { getUserSettings, saveUserSettings, UserSettings } from "@/lib/mockData";
import { useUserPrefs } from "@/lib/useUserPrefs";

interface SettingsModalProps {
  isOpen: boolean;
  onClose: () => void;
  user: { id: string; name?: string | null; email?: string | null; role?: string | null };
  isDemo?: boolean;
}

/** A toggle-row component used throughout Labs tab */
function LabsRow({
  label,
  desc,
  children,
}: {
  label: string;
  desc?: string;
  children: React.ReactNode;
}) {
  return (
    <div
      style={{
        display: "flex",
        justifyContent: "space-between",
        alignItems: "center",
        padding: "10px 14px",
        background: "var(--bg-secondary)",
        borderRadius: "var(--radius-md)",
        border: "1px solid var(--border)",
        marginBottom: 8,
        gap: 16,
      }}
    >
      <div style={{ flex: 1, minWidth: 0 }}>
        <div style={{ fontSize: 13, fontWeight: 600, color: "var(--text-primary)" }}>{label}</div>
        {desc && (
          <div style={{ fontSize: 12, color: "var(--text-secondary)", marginTop: 2, lineHeight: 1.4 }}>
            {desc}
          </div>
        )}
      </div>
      <div style={{ flexShrink: 0 }}>{children}</div>
    </div>
  );
}

/** Segmented control (radio-style) */
function SegmentedControl<T extends string>({
  value,
  options,
  onChange,
}: {
  value: T;
  options: { label: string; value: T }[];
  onChange: (v: T) => void;
}) {
  return (
    <div
      style={{
        display: "inline-flex",
        background: "var(--bg-primary)",
        border: "1px solid var(--border)",
        borderRadius: "var(--radius-sm)",
        padding: 2,
        gap: 2,
      }}
    >
      {options.map((opt) => (
        <button
          key={opt.value}
          type="button"
          onClick={() => onChange(opt.value)}
          style={{
            padding: "4px 10px",
            fontSize: 12,
            fontWeight: value === opt.value ? 700 : 500,
            borderRadius: "var(--radius-xs)",
            background: value === opt.value ? "var(--accent)" : "transparent",
            color: value === opt.value ? "#fff" : "var(--text-secondary)",
            border: "none",
            cursor: "pointer",
            transition: "all var(--dur-fast)",
          }}
        >
          {opt.label}
        </button>
      ))}
    </div>
  );
}

/** Slider with live value display */
function PrefSlider({
  min,
  max,
  value,
  onChange,
  unit,
}: {
  min: number;
  max: number;
  value: number;
  onChange: (v: number) => void;
  unit?: string;
}) {
  return (
    <div style={{ display: "flex", alignItems: "center", gap: 8 }}>
      <input
        type="range"
        min={min}
        max={max}
        value={value}
        onChange={(e) => onChange(parseInt(e.target.value, 10))}
        style={{ width: 120, accentColor: "var(--accent)" }}
      />
      <span style={{ fontSize: 12, fontWeight: 600, color: "var(--text-secondary)", minWidth: 40 }}>
        {value}{unit}
      </span>
    </div>
  );
}

export function SettingsModal({ isOpen, onClose, user, isDemo = false }: SettingsModalProps) {
  const { t, lang, setLang } = useI18n();
  const { theme, toggleTheme } = useTheme();
  const { prefs, updatePrefs, resetToDefaults } = useUserPrefs();

  const [activeTab, setActiveTab] = useState<"profile" | "preferences" | "labs" | "sync" | "admin">("profile");
  const [displayName, setDisplayName] = useState(() => user.name || (typeof window !== "undefined" ? getUserSettings().displayName : "Demo User"));
  const [email, setEmail] = useState(() => user.email || (typeof window !== "undefined" ? getUserSettings().email : "demo@checkflow.local"));
  const [password, setPassword] = useState("");
  const [trashRetention, setTrashRetention] = useState(() => (typeof window !== "undefined" ? (getUserSettings().trashRetentionDays ?? 30) : 30));
  const [savedMsg, setSavedMsg] = useState("");
  const [syncPlatform, setSyncPlatform] = useState<"android" | "apple" | "thunderbird">("android");
  const [copiedCalDav, setCopiedCalDav] = useState(false);
  const [testSyncStatus, setTestSyncStatus] = useState<"idle" | "testing" | "success" | "error">("idle");

  useEffect(() => {
    if (isOpen) {
      const s = getUserSettings();
      setDisplayName(user.name || s.displayName);
      setEmail(user.email || s.email);
      setTrashRetention(s.trashRetentionDays ?? 30);
    }
  }, [isOpen, user]);

  const handleTestConnection = async () => {
    setTestSyncStatus("testing");
    try {
      const res = await fetch("/api/dav", { method: "OPTIONS" });
      if (res.ok || res.status === 401 || res.status === 207) {
        setTestSyncStatus("success");
      } else {
        setTestSyncStatus("error");
      }
    } catch {
      setTestSyncStatus("error");
    }
    setTimeout(() => {
      setTestSyncStatus("idle");
    }, 4000);
  };

  if (!isOpen) return null;

  const handleSave = () => {
    const newSettings: UserSettings = {
      displayName,
      email,
      trashRetentionDays: trashRetention,
      theme,
      language: lang,
    };
    saveUserSettings(newSettings);
    setSavedMsg("✓ " + (lang === "ko" ? "설정이 저장되었습니다" : lang === "ja" ? "設定が保存されました" : "Settings saved"));
    setTimeout(() => {
      setSavedMsg("");
      onClose();
    }, 1000);
  };

  const calDavUrl = typeof window !== "undefined" ? `${window.location.origin}/api/dav` : "https://todo.yourdomain.com/api/dav";

  // Accent hue preview
  const hue = prefs.accentHue;
  const sat = Math.round(prefs.saturation * 0.9);
  const accentPreview = `hsl(${hue}, ${sat}%, 54%)`;

  const tabs = [
    { id: "profile", label: `👤 ${t("profile") || "Profile"}` },
    { id: "preferences", label: `⚙️ ${t("preferences") || "Preferences"}` },
    { id: "labs", label: `🧪 ${t("labs") || "Labs"}` },
    { id: "sync", label: `📱 ${t("syncIntegrations") || "Integrations"}` },
    { id: "admin", label: `👑 ${t("admin") || "Admin"}` },
  ] as const;

  return (
    <div className="modal-overlay" onClick={onClose}>
      <div
        className="modal settings-modal"
        onClick={(e) => e.stopPropagation()}
        style={{ maxWidth: 660, width: "92%", padding: "24px 24px 20px", maxHeight: "90vh", display: "flex", flexDirection: "column" }}
      >
        {/* Header */}
        <div style={{ display: "flex", justifyContent: "space-between", alignItems: "center", marginBottom: 14 }}>
          <h2 className="modal-title" style={{ marginBottom: 0, fontSize: 17 }}>⚙️ {t("settingsModalTitle") || "Settings"}</h2>
          <button className="icon-btn" onClick={onClose} aria-label="Close" type="button">✕</button>
        </div>

        {/* Tab Bar */}
        <div
          style={{
            display: "flex",
            gap: 2,
            borderBottom: "1px solid var(--border)",
            marginBottom: 16,
            paddingBottom: 0,
            overflowX: "auto",
          }}
        >
          {tabs.map((tab) => (
            <button
              key={tab.id}
              type="button"
              onClick={() => setActiveTab(tab.id)}
              style={{
                padding: "7px 14px",
                fontSize: 12.5,
                fontWeight: activeTab === tab.id ? 700 : 500,
                background: "transparent",
                color: activeTab === tab.id ? "var(--accent)" : "var(--text-secondary)",
                border: "none",
                borderBottom: activeTab === tab.id ? "2px solid var(--accent)" : "2px solid transparent",
                borderRadius: 0,
                cursor: "pointer",
                whiteSpace: "nowrap",
                transition: "all var(--dur-fast)",
              }}
            >
              {tab.label}
            </button>
          ))}
        </div>

        {/* Scrollable tab content */}
        <div style={{ flex: 1, overflowY: "auto", paddingRight: 2 }}>

          {/* Tab 1: Profile */}
          {activeTab === "profile" && (
            <div className="settings-tab-content">
              <div className="form-group">
                <label className="form-label">{t("displayName")}</label>
                <input className="form-input" value={displayName} onChange={(e) => setDisplayName(e.target.value)} placeholder="Your Name" />
              </div>
              <div className="form-group">
                <label className="form-label">{t("email")}</label>
                <input className="form-input" type="email" value={email} onChange={(e) => setEmail(e.target.value)} placeholder="your.email@example.com" />
              </div>
              <div className="form-group">
                <label className="form-label">{t("password")} (Change)</label>
                <input className="form-input" type="password" value={password} onChange={(e) => setPassword(e.target.value)} placeholder="New password (leave blank to keep current)" />
              </div>
            </div>
          )}

          {/* Tab 2: Preferences */}
          {activeTab === "preferences" && (
            <div className="settings-tab-content">
              <div className="form-group">
                <label className="form-label" style={{ fontWeight: 600 }}>
                  🗑️ {t("trashRetention") || "Trash Auto-Delete Retention Period"}
                </label>
                <p style={{ fontSize: 12, color: "var(--text-tertiary)", marginBottom: 8 }}>
                  {t("trashRetentionHint") || "Deleted tasks will be permanently removed after the specified period."}
                </p>
                <select className="form-input" value={trashRetention} onChange={(e) => setTrashRetention(parseInt(e.target.value, 10))}>
                  <option value={7}>{t("days7") || "7 Days"}</option>
                  <option value={14}>{t("days14") || "14 Days"}</option>
                  <option value={30}>{t("days30") || "30 Days (Recommended)"}</option>
                  <option value={0}>{t("neverDelete") || "Never Auto-Delete (Manual empty only)"}</option>
                </select>
              </div>
              <div className="form-group">
                <label className="form-label">{t("language")}</label>
                <select className="form-input" value={lang} onChange={(e) => setLang(e.target.value as "en" | "ko" | "ja")}>
                  <option value="en">English (Default)</option>
                  <option value="ko">한국어 (Korean)</option>
                  <option value="ja">日本語 (Japanese)</option>
                </select>
              </div>
              <div className="form-group">
                <label className="form-label">{t("theme")}</label>
                <div style={{ display: "flex", gap: 8 }}>
                  {[
                    { key: "system", icon: "💻", label: t("themeSystem") },
                    { key: "light",  icon: "☀️", label: t("themeLight") },
                    { key: "dark",   icon: "🌙", label: t("themeDark") },
                  ].map(({ key, icon, label }) => (
                    <button
                      key={key}
                      type="button"
                      className={`btn btn-sm ${theme === key ? "btn-primary" : "btn-ghost"}`}
                      onClick={() => { if (theme !== key) toggleTheme(); }}
                    >
                      {icon} {label}
                    </button>
                  ))}
                </div>
              </div>
            </div>
          )}

          {/* Tab 3: 🧪 CheckFlow Labs */}
          {activeTab === "labs" && (
            <div className="settings-tab-content">
              {/* Section: View */}
              <div style={{ fontSize: 11, fontWeight: 700, color: "var(--text-tertiary)", letterSpacing: "0.08em", textTransform: "uppercase", marginBottom: 8 }}>
                View
              </div>

              <LabsRow
                label="📊 Kanban Board"
                desc="Switch between list view and 3-column Kanban board (To Do / In Progress / Done)."
              >
                <SegmentedControl
                  value={prefs.viewMode}
                  options={[
                    { label: "List", value: "list" },
                    { label: "Kanban", value: "kanban" },
                  ]}
                  onChange={(v) => updatePrefs({ viewMode: v })}
                />
              </LabsRow>

              {/* Section: Layout */}
              <div style={{ fontSize: 11, fontWeight: 700, color: "var(--text-tertiary)", letterSpacing: "0.08em", textTransform: "uppercase", margin: "16px 0 8px" }}>
                Layout
              </div>

              <LabsRow
                label="📐 Content Density"
                desc="Controls the vertical spacing of task items."
              >
                <SegmentedControl
                  value={prefs.density}
                  options={[
                    { label: "Compact", value: "compact" },
                    { label: "Default", value: "default" },
                    { label: "Airy", value: "comfortable" },
                  ]}
                  onChange={(v) => updatePrefs({ density: v })}
                />
              </LabsRow>

              <LabsRow
                label="↔️ Sidebar Width"
                desc={`Drag the sidebar edge or adjust here. (${prefs.sidebarWidth}px)`}
              >
                <PrefSlider
                  min={160}
                  max={420}
                  value={prefs.sidebarWidth}
                  onChange={(v) => updatePrefs({ sidebarWidth: v })}
                  unit="px"
                />
              </LabsRow>

              <LabsRow
                label="↔️ Detail Panel Width"
                desc={`Drag the panel edge or adjust here. (${prefs.detailWidth}px)`}
              >
                <PrefSlider
                  min={300}
                  max={760}
                  value={prefs.detailWidth}
                  onChange={(v) => updatePrefs({ detailWidth: v })}
                  unit="px"
                />
              </LabsRow>

              {/* Section: Appearance */}
              <div style={{ fontSize: 11, fontWeight: 700, color: "var(--text-tertiary)", letterSpacing: "0.08em", textTransform: "uppercase", margin: "16px 0 8px" }}>
                Appearance
              </div>

              <LabsRow
                label="🔤 Font Size"
                desc="Base font size across the app."
              >
                <SegmentedControl
                  value={prefs.fontSize}
                  options={[
                    { label: "S", value: "small" },
                    { label: "M", value: "default" },
                    { label: "L", value: "large" },
                  ]}
                  onChange={(v) => updatePrefs({ fontSize: v })}
                />
              </LabsRow>

              <LabsRow
                label="🎨 Accent Color"
                desc="Choose the hue of your accent color. Saturation controls vibrancy."
              >
                <div style={{ display: "flex", flexDirection: "column", gap: 6, alignItems: "flex-end" }}>
                  {/* Hue ring preview */}
                  <div style={{ display: "flex", gap: 5, flexWrap: "wrap", justifyContent: "flex-end" }}>
                    {[210, 250, 340, 10, 45, 145, 185].map((h) => (
                      <div
                        key={h}
                        onClick={() => updatePrefs({ accentHue: h })}
                        title={`Hue ${h}°`}
                        style={{
                          width: 20,
                          height: 20,
                          borderRadius: "50%",
                          background: `hsl(${h}, ${sat}%, 54%)`,
                          cursor: "pointer",
                          border: prefs.accentHue === h ? "2.5px solid var(--text-primary)" : "2px solid transparent",
                          outline: prefs.accentHue === h ? `3px solid ${accentPreview}` : "none",
                          outlineOffset: 1,
                          transition: "transform var(--dur-fast)",
                          transform: prefs.accentHue === h ? "scale(1.2)" : "scale(1)",
                        }}
                      />
                    ))}
                  </div>
                  <div style={{ display: "flex", alignItems: "center", gap: 6 }}>
                    <span style={{ fontSize: 11, color: "var(--text-tertiary)" }}>Saturation</span>
                    <PrefSlider
                      min={20}
                      max={100}
                      value={prefs.saturation}
                      onChange={(v) => updatePrefs({ saturation: v })}
                      unit="%"
                    />
                  </div>
                  {/* Custom hue input */}
                  <div style={{ display: "flex", alignItems: "center", gap: 6 }}>
                    <span style={{ fontSize: 11, color: "var(--text-tertiary)" }}>Hue °</span>
                    <input
                      type="range"
                      min={0}
                      max={360}
                      value={prefs.accentHue}
                      onChange={(e) => updatePrefs({ accentHue: parseInt(e.target.value, 10) })}
                      style={{ width: 100, accentColor: accentPreview }}
                    />
                    <div style={{ width: 18, height: 18, borderRadius: "50%", background: accentPreview, flexShrink: 0 }} />
                  </div>
                </div>
              </LabsRow>

              <LabsRow
                label="⬛ Border Roundness"
                desc="Controls the roundness of cards, buttons, and UI elements."
              >
                <SegmentedControl
                  value={prefs.roundness}
                  options={[
                    { label: "Sharp", value: "sharp" },
                    { label: "Default", value: "default" },
                    { label: "Round", value: "round" },
                  ]}
                  onChange={(v) => updatePrefs({ roundness: v })}
                />
              </LabsRow>

              <LabsRow
                label="⚡ Animation Speed"
                desc="Controls the speed of transitions and hover effects."
              >
                <SegmentedControl
                  value={prefs.animationSpeed}
                  options={[
                    { label: "Off", value: "none" },
                    { label: "Fast", value: "fast" },
                    { label: "Default", value: "default" },
                    { label: "Slow", value: "slow" },
                  ]}
                  onChange={(v) => updatePrefs({ animationSpeed: v })}
                />
              </LabsRow>

              {/* Reset to Defaults */}
              <div style={{ marginTop: 20, borderTop: "1px solid var(--border)", paddingTop: 16 }}>
                <LabsRow
                  label="🔄 Reset to Defaults"
                  desc="Restores all layout, appearance, and view settings to their factory defaults."
                >
                  <button
                    type="button"
                    className="btn btn-sm"
                    style={{ color: "var(--danger)", border: "1px solid var(--danger)", background: "transparent" }}
                    onClick={() => {
                      if (confirm(t("resetConfirm") || "Reset all customizations to defaults?")) {
                        resetToDefaults();
                      }
                    }}
                  >
                    {t("resetDefaults") || "Reset"}
                  </button>
                </LabsRow>
              </div>
            </div>
          )}

          {/* Tab: CalDAV / External Sync */}
          {activeTab === "sync" && (
            <div className="settings-tab-content">
              <h3 style={{ fontSize: 15, fontWeight: 700, marginBottom: 6 }}>
                📱 {t("syncTitle") || "CalDAV & Mobile Sync (Android / Apple)"}
              </h3>
              <p style={{ fontSize: 13, color: "var(--text-secondary)", lineHeight: 1.5, marginBottom: 14 }}>
                {t("syncDesc") || "CheckFlow supports native two-way synchronization with Android, Apple Reminders, and Thunderbird via standard CalDAV."}
              </p>

              {/* Endpoint bar & Action buttons */}
              <div className="form-group" style={{ marginBottom: 14 }}>
                <label className="form-label" style={{ fontWeight: 600 }}>{t("syncBaseUrl") || "CalDAV Server Base URL"}</label>
                <div style={{ display: "flex", gap: 8, alignItems: "center" }}>
                  <input
                    className="form-input"
                    readOnly
                    value={calDavUrl}
                    style={{ fontFamily: "monospace", fontSize: 12.5, background: "var(--bg-secondary)", flex: 1 }}
                    onClick={(e) => (e.target as HTMLInputElement).select()}
                  />
                  <button
                    type="button"
                    className="btn btn-ghost btn-sm"
                    onClick={() => {
                      navigator.clipboard.writeText(calDavUrl);
                      setCopiedCalDav(true);
                      setTimeout(() => setCopiedCalDav(false), 2000);
                    }}
                    style={{ minWidth: 80, fontWeight: 600 }}
                  >
                    {copiedCalDav ? `✓ ${t("syncCopied") || "Copied!"}` : `📋 ${t("syncCopyUrl") || "Copy"}`}
                  </button>
                </div>
              </div>

              {/* Actions row: Test & Download */}
              <div style={{ display: "flex", gap: 10, marginBottom: 16, flexWrap: "wrap", alignItems: "center" }}>
                <button
                  type="button"
                  className="btn btn-sm btn-ghost"
                  onClick={handleTestConnection}
                  disabled={testSyncStatus === "testing"}
                  style={{ display: "inline-flex", alignItems: "center", gap: 6 }}
                >
                  {testSyncStatus === "testing" ? `⏳ ${t("syncTesting") || "Testing..."}` : `🔍 ${t("syncTestConnection") || "Test Endpoint"}`}
                </button>
                <a
                  href="/api/dav"
                  target="_blank"
                  rel="noreferrer"
                  className="btn btn-sm btn-ghost"
                  style={{ display: "inline-flex", alignItems: "center", gap: 6, textDecoration: "none" }}
                >
                  📥 {t("syncDownloadIcs") || "Download .ICS Feed"}
                </a>
                {testSyncStatus === "success" && (
                  <span style={{ fontSize: 12, color: "var(--success)", fontWeight: 600 }}>
                    {t("syncTestSuccess") || "✓ CalDAV endpoint responded successfully"}
                  </span>
                )}
                {testSyncStatus === "error" && (
                  <span style={{ fontSize: 12, color: "var(--danger)", fontWeight: 600 }}>
                    ✕ Endpoint test failed
                  </span>
                )}
              </div>

              {/* Client setup guides segmented selector */}
              <div style={{ marginBottom: 10 }}>
                <SegmentedControl
                  value={syncPlatform}
                  options={[
                    { label: `🤖 ${t("syncTabAndroid") || "Android (DAVx⁵)"}`, value: "android" },
                    { label: `🍎 ${t("syncTabApple") || "Apple Reminders"}`, value: "apple" },
                    { label: `🦅 ${t("syncTabThunderbird") || "Thunderbird"}`, value: "thunderbird" },
                  ]}
                  onChange={(v) => setSyncPlatform(v)}
                />
              </div>

              {/* Step by step cards */}
              <div
                style={{
                  background: "var(--bg-secondary)",
                  padding: "14px 16px",
                  borderRadius: "var(--radius-md)",
                  border: "1px solid var(--border)",
                  fontSize: 12.5,
                  color: "var(--text-primary)",
                  lineHeight: 1.6,
                }}
              >
                {syncPlatform === "android" && (
                  <div>
                    <div style={{ fontWeight: 700, marginBottom: 6, color: "var(--accent)" }}>
                      📱 Android (DAVx⁵ + Tasks.org / OpenTasks)
                    </div>
                    <ol style={{ paddingLeft: 20, margin: 0, display: "flex", flexDirection: "column", gap: 4 }}>
                      <li>{t("syncAndroidStep1")}</li>
                      <li>{t("syncAndroidStep2")}</li>
                      <li>{t("syncAndroidStep3")}</li>
                      <li>{t("syncAndroidStep4")}</li>
                    </ol>
                    <div style={{ marginTop: 10, fontSize: 11.5, color: "var(--text-tertiary)", borderTop: "1px dashed var(--border)", paddingTop: 8 }}>
                      💡 <strong>Tip:</strong> In DAVx⁵ account settings, set Sync Interval to <strong>15 minutes</strong> for battery efficiency and near real-time sync.
                    </div>
                  </div>
                )}

                {syncPlatform === "apple" && (
                  <div>
                    <div style={{ fontWeight: 700, marginBottom: 6, color: "var(--accent)" }}>
                      🍎 Apple Reminders & Calendar (iOS / iPadOS / macOS)
                    </div>
                    <ol style={{ paddingLeft: 20, margin: 0, display: "flex", flexDirection: "column", gap: 4 }}>
                      <li>{t("syncAppleStep1")}</li>
                      <li>{t("syncAppleStep2")}</li>
                      <li>{t("syncAppleStep3")}</li>
                      <li>{t("syncAppleStep4")}</li>
                    </ol>
                    <div style={{ marginTop: 10, fontSize: 11.5, color: "var(--text-tertiary)", borderTop: "1px dashed var(--border)", paddingTop: 8 }}>
                      💡 <strong>Tip:</strong> If using HTTPS behind a reverse proxy (Nginx/Caddy), ensure valid SSL certificates are trusted by Apple devices.
                    </div>
                  </div>
                )}

                {syncPlatform === "thunderbird" && (
                  <div>
                    <div style={{ fontWeight: 700, marginBottom: 6, color: "var(--accent)" }}>
                      💻 Mozilla Thunderbird (Windows / Mac / Linux)
                    </div>
                    <ol style={{ paddingLeft: 20, margin: 0, display: "flex", flexDirection: "column", gap: 4 }}>
                      <li>{t("syncThunderbirdStep1")}</li>
                      <li>{t("syncThunderbirdStep2")}</li>
                      <li>{t("syncThunderbirdStep3")}</li>
                      <li>{t("syncThunderbirdStep4")}</li>
                    </ol>
                    <div style={{ marginTop: 10, fontSize: 11.5, color: "var(--text-tertiary)", borderTop: "1px dashed var(--border)", paddingTop: 8 }}>
                      💡 <strong>Tip:</strong> Thunderbird Tasks view will display CheckFlow priority tags, due dates, and completion status.
                    </div>
                  </div>
                )}
              </div>
            </div>
          )}

          {/* Tab 4: Admin Quick Access */}
          {activeTab === "admin" && (
            <div className="settings-tab-content">
              <div style={{ display: "flex", alignItems: "center", gap: 10, marginBottom: 12 }}>
                <span style={{ fontSize: 24 }}>👑</span>
                <div>
                  <h3 style={{ fontSize: 15, fontWeight: 700, margin: 0 }}>
                    {t("admin") || "Admin Console"}
                  </h3>
                  <p style={{ fontSize: 12, color: "var(--text-tertiary)", margin: "2px 0 0" }}>
                    Multi-user administration, account control, and system telemetry
                  </p>
                </div>
              </div>

              <div
                style={{
                  background: "var(--bg-secondary)",
                  borderRadius: "var(--radius-md)",
                  padding: 16,
                  border: "1px solid var(--border)",
                  marginBottom: 16,
                  fontSize: 13,
                  lineHeight: 1.6,
                }}
              >
                <div style={{ display: "flex", justifyContent: "space-between", marginBottom: 10, flexWrap: "wrap", gap: 8 }}>
                  <div>
                    <strong style={{ color: "var(--text-primary)" }}>Current Account:</strong>{" "}
                    <code style={{ background: "var(--bg-primary)", padding: "2px 6px", borderRadius: 4, border: "1px solid var(--border)" }}>
                      {user.email || "demo@checkflow.local"}
                    </code>
                  </div>
                  <div>
                    <span
                      style={{
                        padding: "2px 8px",
                        borderRadius: "var(--radius-sm)",
                        fontSize: 11,
                        fontWeight: 700,
                        background: "rgba(75, 123, 245, 0.15)",
                        color: "var(--accent)",
                        border: "1px solid var(--border)",
                      }}
                    >
                      {user.role || (isDemo ? "DEMO_ADMIN" : "USER")}
                    </span>
                  </div>
                </div>

                <div style={{ display: "grid", gridTemplateColumns: "1fr 1fr", gap: 10, marginTop: 12 }}>
                  <div style={{ background: "var(--bg-primary)", padding: "10px 12px", borderRadius: "var(--radius-sm)", border: "1px solid var(--border)" }}>
                    <div style={{ fontSize: 11, color: "var(--text-tertiary)" }}>Isolation Mode</div>
                    <div style={{ fontSize: 13, fontWeight: 600, marginTop: 2, color: "var(--success)" }}>● Multi-User Privacy</div>
                  </div>
                  <div style={{ background: "var(--bg-primary)", padding: "10px 12px", borderRadius: "var(--radius-sm)", border: "1px solid var(--border)" }}>
                    <div style={{ fontSize: 11, color: "var(--text-tertiary)" }}>CalDAV Endpoint</div>
                    <div style={{ fontSize: 13, fontWeight: 600, marginTop: 2, color: "var(--accent)" }}>● Active / Enabled</div>
                  </div>
                </div>
              </div>

              <div style={{ display: "flex", gap: 10 }}>
                <a
                  href="/admin"
                  className="btn btn-primary"
                  style={{ display: "inline-flex", alignItems: "center", gap: 8, textDecoration: "none" }}
                >
                  🚀 Open Admin Dashboard →
                </a>
              </div>
            </div>
          )}
        </div>

        {/* Footer */}
        <div
          className="modal-footer"
          style={{ marginTop: 16, paddingTop: 12, borderTop: "1px solid var(--border)", display: "flex", justifyContent: "space-between", alignItems: "center" }}
        >
          {savedMsg && <span style={{ fontSize: 13, color: "var(--success)", fontWeight: 600 }}>{savedMsg}</span>}
          <div style={{ display: "flex", gap: 8, marginLeft: "auto" }}>
            <button className="btn btn-ghost" onClick={onClose} type="button">{t("cancel")}</button>
            <button className="btn btn-primary" onClick={handleSave} type="button">
              {t("save") || "Save Changes"}
            </button>
          </div>
        </div>
      </div>
    </div>
  );
}