import React, { useEffect, useMemo, useState } from 'react';
import { Outlet, useLocation, useNavigate } from 'react-router-dom';
import {
  AppstoreOutlined,
  CloudOutlined,
  DashboardOutlined,
  DesktopOutlined,
  DownOutlined,
  ExperimentOutlined,
  FundProjectionScreenOutlined,
  LineChartOutlined,
  LogoutOutlined,
  MenuFoldOutlined,
  MenuUnfoldOutlined,
  MessageOutlined,
  MoonOutlined,
  RightOutlined,
  RobotOutlined,
  SettingOutlined,
  ShoppingOutlined,
  TableOutlined,
  TeamOutlined,
  UserOutlined,
  SunOutlined,
} from '@ant-design/icons';
import { Dropdown, Switch } from 'antd';
import { verifyToken } from '../api/auth';
import { getSetupStatus, getSystemConfig } from '../api/admin';
import { getInstallStatus } from '../api/install';
import ErrorBoundary from '../components/ErrorBoundary';
import { AppShellSkeleton } from '../components/AppLoadingSkeleton';
import { DEFAULT_SIDEBAR_CONFIG, parseSidebarConfig, sortSidebarEntries } from '../config/sidebarNavigation';
import {
  canRestoreDesktopSessionImmediately,
  isDesktopEmbedSession,
  markDesktopEmbedSession,
  requestDesktopSessionRenewal,
} from '../utils/desktopEmbedSession';

const AUTH_USER_STORAGE_KEY = 'auth_user';
const SIDEBAR_DARK_MODE_STORAGE_KEY = 'maixiang_sidebar_dark_mode';
const BRAND_HOME_URL = 'https://yyd.jiansuntuzhi.cn/analysis/summary';
const PLANNING_HOME_URL = '/planning/dev-style-preview';
const FALLBACK_SITE_NAME = '拼多多自动化运营平台';
const FALLBACK_LOGO = 'https://s3.jiansun.vip/gongxiangpan/logos/1775097467497-1d6a81b8a76a.png';
const readSidebarDarkModePreference = () => {
  try {
    const value = localStorage.getItem(SIDEBAR_DARK_MODE_STORAGE_KEY);
    if (value === 'dark') return true;
    if (value === 'light') return false;
  } catch {
    // Local persistence is optional in restricted browser contexts.
  }
  return null;
};

const SIDEBAR_ICON_MAP = {
  appstore: AppstoreOutlined,
  cloud: CloudOutlined,
  dashboard: DashboardOutlined,
  desktop: DesktopOutlined,
  experiment: ExperimentOutlined,
  'line-chart': LineChartOutlined,
  message: MessageOutlined,
  projection: FundProjectionScreenOutlined,
  robot: RobotOutlined,
  setting: SettingOutlined,
  shopping: ShoppingOutlined,
  table: TableOutlined,
  team: TeamOutlined,
};

const SIDEBAR_ROUTE_MAP = {
  'dashboard-preview': { path: '/planning/dev-style-preview' },
  'marketing-events': {
    path: '/planning/operation/marketing-events',
    activePath: '/planning/operation/marketing-events',
    matchMode: 'prefix',
  },
  'promotion-module': { path: '/planning/operation/promotion-module' },
  'product-monitoring': { path: '/planning/operation/product-monitoring' },
  'ops-b-incentive': { path: '/planning/operation/ops-b-incentive' },
  'product-analysis': { path: '/planning/operation/product-analysis' },
  'work-orders': { path: '/planning/operation/work-orders' },
  'modular-stock-monitor-accessory': {
    path: '/planning/operation/modular-stock-monitor',
    activePath: '/planning/operation/modular-stock-monitor',
    matchMode: 'prefix',
  },
  'mkh-bom-data': {
    path: '/planning/operation/mkh-bom-data',
    activePath: '/planning/operation/mkh-bom-data',
    matchMode: 'prefix',
  },
  'daily-inventory': { path: '/planning/operation/daily-inventory' },
  settings: { path: '/settings' },
  'online-desktop-users': { path: '/settings/online-desktop-users' },
  'desktop-execution-tasks': { path: '/settings/desktop-execution-tasks' },
};


const buildSidebarSections = (config, canUseSettings) => sortSidebarEntries(config.entries).flatMap((entry) => {
  if (entry.requiresAdmin && !canUseSettings) return [];
  if (entry.type === 'section') return [{ ...entry }];

  const route = SIDEBAR_ROUTE_MAP[entry.routeKey] || {};
  const routeMatches = (itemRoute = {}, pathname = '') => {
    const excludedPaths = Array.isArray(itemRoute.excludePaths) ? itemRoute.excludePaths : [];
    if (excludedPaths.some((path) => pathname === path || pathname.startsWith(`${path}/`))) {
      return false;
    }

    const exactPaths = Array.isArray(itemRoute.matchPaths) ? itemRoute.matchPaths : [];
    if (exactPaths.some((path) => pathname === path || pathname.startsWith(`${path}/`))) {
      return true;
    }

    const matchPath = itemRoute.activePath || itemRoute.path;
    if (!matchPath) return false;
    return itemRoute.matchMode === 'prefix'
      ? pathname === matchPath || pathname.startsWith(`${matchPath}/`)
      : pathname === matchPath;
  };
  const buildItem = (item) => {
    if (item.requiresAdmin && !canUseSettings) return null;
    const itemRoute = SIDEBAR_ROUTE_MAP[item.routeKey] || {};
    return {
      ...item,
      icon: SIDEBAR_ICON_MAP[item.icon] || AppstoreOutlined,
      path: itemRoute.path,
      external: Boolean(itemRoute.externalUrl),
      onClick: itemRoute.externalUrl ? () => { window.location.href = itemRoute.externalUrl; } : undefined,
      match: (path) => routeMatches(itemRoute, path),
    };
  };

  const normalized = {
    ...entry,
    icon: SIDEBAR_ICON_MAP[entry.icon] || AppstoreOutlined,
    path: route.path,
    external: Boolean(route.externalUrl),
    onClick: route.externalUrl ? () => { window.location.href = route.externalUrl; } : undefined,
    match: (path) => routeMatches(route, path),
  };

  if (entry.type === 'group') {
    normalized.children = sortSidebarEntries(entry.children).map(buildItem).filter(Boolean);
  }

  return [normalized];
});

function parseJwtPayload(token) {
  if (!token) {
    return null;
  }

  try {
    const [, payload] = token.split('.');
    if (!payload) {
      return null;
    }

    const normalized = payload.replace(/-/g, '+').replace(/_/g, '/');
    const padded = normalized.padEnd(normalized.length + ((4 - normalized.length % 4) % 4), '=');
    return JSON.parse(window.atob(padded));
  } catch {
    return null;
  }
}

function isExpiredJwtPayload(payload) {
  const exp = Number(payload?.exp || 0);
  return exp > 0 && Math.floor(Date.now() / 1000) >= exp;
}

function readStoredAuthUser(tokenSub) {
  try {
    const raw = localStorage.getItem(AUTH_USER_STORAGE_KEY);
    if (!raw) {
      return null;
    }

    const storedUser = JSON.parse(raw);
    const storedSub = storedUser?.sub ?? storedUser?.id;
    return storedSub && String(storedSub) === String(tokenSub) ? storedUser : null;
  } catch {
    return null;
  }
}

function clearAuthSession() {
  localStorage.removeItem('token');
  localStorage.removeItem(AUTH_USER_STORAGE_KEY);
}

function looksLikeMojibake(text) {
  return /[ÃÂ][\u0080-\u00ff]|[äåæçèé][\u0080-\u00ff]|[\u00c0-\u00ff][\u0080-\u00bf]/.test(text);
}

function repairMojibake(text) {
  if (!text || !looksLikeMojibake(text) || typeof TextDecoder === 'undefined') {
    return text;
  }

  try {
    const bytes = Uint8Array.from([...text].map((char) => char.charCodeAt(0) & 0xff));
    const repaired = new TextDecoder('utf-8', { fatal: true }).decode(bytes).trim();
    return repaired || text;
  } catch {
    return text;
  }
}

function normalizeDisplayName(...candidates) {
  const rawName = candidates.find((item) => typeof item === 'string' && item.trim());
  return repairMojibake(rawName?.trim() || '个人中心');
}

function buildFallbackUserFromToken(token) {
  const payload = parseJwtPayload(token);
  if (!payload?.sub || isExpiredJwtPayload(payload)) {
    return null;
  }

  const storedUser = readStoredAuthUser(payload.sub);
  return {
    sub: payload.sub,
    username: payload.username || '',
    name: payload.name || payload.username || '当前用户',
    email: payload.email || '',
    role: payload.role || storedUser?.role || 'user',
    picture: payload.picture || storedUser?.picture || '',
    authSource: payload.authSource || storedUser?.authSource || 'local',
    departmentId: payload.departmentId ?? storedUser?.departmentId ?? null,
    departmentName: payload.departmentName || storedUser?.departmentName || '',
    allowedPageKeys: Array.isArray(payload.allowedPageKeys)
      ? payload.allowedPageKeys
      : Array.isArray(storedUser?.allowedPageKeys)
        ? storedUser.allowedPageKeys
        : [],
  };
}

function canFallbackToJwtPayload(error, fallbackUser) {
  if (!fallbackUser) {
    return false;
  }

  if (fallbackUser.authSource === 'local-preview') {
    return true;
  }

  const status = Number(error?.response?.status || 0);
  return !status || status >= 500;
}

const BasicLayout = () => {
  const location = useLocation();
  const navigate = useNavigate();
  const [user, setUser] = useState(null);
  const [authReady, setAuthReady] = useState(false);
  const [siteConfig, setSiteConfig] = useState({ siteName: FALLBACK_SITE_NAME, logo: FALLBACK_LOGO });
  const [sidebarConfig, setSidebarConfig] = useState(DEFAULT_SIDEBAR_CONFIG);
  const [sidebarCollapsed, setSidebarCollapsed] = useState(
    () => DEFAULT_SIDEBAR_CONFIG.collapsedByDefault
  );
  const [sidebarDarkMode, setSidebarDarkMode] = useState(
    () => readSidebarDarkModePreference() ?? DEFAULT_SIDEBAR_CONFIG.darkModeByDefault
  );
  const [expandedSidebarKeys, setExpandedSidebarKeys] = useState(
    DEFAULT_SIDEBAR_CONFIG.entries.filter((entry) => entry.defaultExpanded).map((entry) => entry.key)
  );

  const pathname = location.pathname;
  const isImmersivePlanningRoute = false;
  const canUseSettings = user?.role === 'admin';
  const userDisplayName = normalizeDisplayName(user?.name, user?.username, user?.email);
  const userAvatar = user?.picture || siteConfig.logo || FALLBACK_LOGO;

  const sidebarSections = useMemo(
    () => buildSidebarSections(sidebarConfig, canUseSettings),
    [canUseSettings, sidebarConfig]
  );
  useEffect(() => {
    const loadSiteConfig = async () => {
      try {
        const config = await getSystemConfig();
        const nextSiteName = config?.site_name || FALLBACK_SITE_NAME;
        const nextLogo = config?.logo || FALLBACK_LOGO;
        const nextSidebarConfig = parseSidebarConfig(config?.sidebar_navigation);

        setSiteConfig({ siteName: nextSiteName, logo: nextLogo });
        setSidebarConfig(nextSidebarConfig);
        setSidebarCollapsed(Boolean(nextSidebarConfig.collapsedByDefault));
        setSidebarDarkMode(readSidebarDarkModePreference() ?? Boolean(nextSidebarConfig.darkModeByDefault));
        setExpandedSidebarKeys(
          nextSidebarConfig.entries.filter((entry) => entry.defaultExpanded).map((entry) => entry.key)
        );
        document.title = nextSiteName;

        let link = document.querySelector("link[rel*='icon']");
        if (!link) {
          link = document.createElement('link');
          link.rel = 'icon';
          document.head.appendChild(link);
        }
        link.href = nextLogo;
      } catch {
        document.title = FALLBACK_SITE_NAME;
      }
    };

    loadSiteConfig();
  }, []);

  useEffect(() => {
    const handleSiteConfigUpdated = (event) => {
      const nextSiteName = event.detail?.siteName || FALLBACK_SITE_NAME;
      const nextLogo = event.detail?.logo;

      setSiteConfig((current) => ({
        siteName: nextSiteName,
        logo: nextLogo || current.logo,
      }));
      document.title = nextSiteName;

      if (nextLogo) {
        let link = document.querySelector("link[rel*='icon']");
        if (!link) {
          link = document.createElement('link');
          link.rel = 'icon';
          document.head.appendChild(link);
        }
        link.href = nextLogo;
      }
    };

    window.addEventListener('site-config-updated', handleSiteConfigUpdated);
    return () => window.removeEventListener('site-config-updated', handleSiteConfigUpdated);
  }, []);

  useEffect(() => {
    const checkAuth = async () => {
      markDesktopEmbedSession();
      const token = localStorage.getItem('token');
      const fallbackUser = buildFallbackUserFromToken(token);

      if (canRestoreDesktopSessionImmediately(isDesktopEmbedSession(), fallbackUser)) {
        setUser(fallbackUser);
        setAuthReady(true);

        try {
          const verification = await verifyToken();
          if (!verification?.valid || !verification.user) {
            clearAuthSession();
            requestDesktopSessionRenewal('web-session-invalid');
            return;
          }

          const resolvedUser = verification.user;
          localStorage.setItem(AUTH_USER_STORAGE_KEY, JSON.stringify(resolvedUser));
          setUser(resolvedUser);

          if (resolvedUser.role === 'admin') {
            const setup = await getSetupStatus().catch((error) => {
              console.warn('Setup status unavailable, continue with current session:', error);
              return null;
            });
            if (setup?.shouldShowWizard) {
              navigate('/setup', { replace: true });
            }
          }
        } catch (error) {
          if (!canFallbackToJwtPayload(error, fallbackUser)) {
            clearAuthSession();
            requestDesktopSessionRenewal('web-session-invalid');
          }
        }
        return;
      }

      try {
        const installStatusPromise = getInstallStatus().catch(() => ({ required: false }));
        const verificationPromise = verifyToken()
          .then((res) => ({ res, error: null }))
          .catch((error) => ({ res: null, error }));
        const setupStatusPromise = fallbackUser?.role === 'admin'
          ? getSetupStatus().catch((error) => {
              console.warn('Setup status unavailable, continue with current session:', error);
              return null;
            })
          : null;
        const [installStatus, verification] = await Promise.all([
          installStatusPromise,
          verificationPromise,
        ]);
        if (installStatus?.required && !fallbackUser) {
          clearAuthSession();
          navigate('/install', { replace: true });
          return;
        }

        let resolvedUser = null;
        const verifyError = verification.error;
        if (verification.res?.valid) {
          resolvedUser = verification.res.user;
        } else if (verifyError) {
          console.warn('Token verification failed:', verifyError);
        }

        if (!resolvedUser && canFallbackToJwtPayload(verifyError, fallbackUser)) {
          resolvedUser = fallbackUser;
        }

        if (resolvedUser) {
          localStorage.setItem(AUTH_USER_STORAGE_KEY, JSON.stringify(resolvedUser));
          if (resolvedUser.role === 'admin') {
            try {
              const setup = setupStatusPromise
                ? await setupStatusPromise
                : await getSetupStatus();
              if (setup?.shouldShowWizard) {
                navigate('/setup', { replace: true });
                return;
              }
            } catch (error) {
              console.warn('Setup status unavailable, continue with current session:', error);
            }
          }

          setUser(resolvedUser);
        } else if (installStatus?.required) {
          clearAuthSession();
          navigate('/install', { replace: true });
        } else {
          clearAuthSession();
          if (!requestDesktopSessionRenewal('web-session-missing')) {
            navigate('/login');
          }
        }
      } catch (error) {
        console.error(error);
        if (fallbackUser) {
          setUser(fallbackUser);
        } else {
          clearAuthSession();
          if (!requestDesktopSessionRenewal('web-session-invalid')) {
            navigate('/login');
          }
        }
      } finally {
        setAuthReady(true);
      }
    };

    checkAuth();
  }, [navigate]);

  useEffect(() => {
    if (!authReady || !user) {
      return;
    }

    if (pathname === '/' || pathname === '/dashboard') {
      navigate(PLANNING_HOME_URL, { replace: true });
      return;
    }

    if (pathname.startsWith('/settings') && !canUseSettings) {
      navigate(PLANNING_HOME_URL, { replace: true });
      return;
    }

    const isAllowedPath = (
      pathname === '/planning'
      || pathname.startsWith('/planning/')
      || pathname === '/settings'
      || pathname.startsWith('/settings/')
    );

    if (!isAllowedPath) {
      navigate(PLANNING_HOME_URL, { replace: true });
    }
  }, [authReady, canUseSettings, navigate, pathname, user]);

  const handleLogout = () => {
    clearAuthSession();
    navigate('/login');
  };

  const userMenu = [
    canUseSettings
      ? {
          key: 'settings',
          icon: <SettingOutlined />,
          label: '系统设置',
          onClick: () => navigate('/settings'),
        }
      : null,
    {
      key: 'logout',
      icon: <LogoutOutlined />,
      label: '退出登录',
      onClick: handleLogout,
    },
  ].filter(Boolean);

  const isSidebarEntryActive = (entry) => {
    if (!entry) return false;
    if (entry.match?.(pathname)) return true;
    return Array.isArray(entry.children) && entry.children.some((child) => isSidebarEntryActive(child));
  };

  const toggleSidebarGroup = (key) => {
    setSidebarCollapsed(false);
    setExpandedSidebarKeys((keys) => (
      keys.includes(key)
        ? keys.filter((item) => item !== key)
        : [...keys, key]
    ));
  };

  const handleSidebarLeafClick = (item) => {
    if (item.external) {
      item.onClick?.();
      return;
    }
    if (item.path) {
      navigate(item.path);
    }
  };

  const handleSidebarDarkModeChange = (checked) => {
    setSidebarDarkMode(checked);
    try {
      localStorage.setItem(SIDEBAR_DARK_MODE_STORAGE_KEY, checked ? 'dark' : 'light');
    } catch {
      // Keep the current-session preference when persistence is unavailable.
    }
  };

  if (!authReady) {
    return <AppShellSkeleton />;
  }

  return (
    <div className={`planning-subsystem-shell${isImmersivePlanningRoute ? ' is-immersive' : ''}${sidebarCollapsed ? ' is-sidebar-collapsed' : ''}${sidebarDarkMode ? ' is-sidebar-dark' : ''}`}>
      <aside className="planning-subsystem-sidebar">
        <button
          type="button"
          className="planning-subsystem-brand"
          onClick={() => { window.location.href = BRAND_HOME_URL; }}
          title="返回主系统"
        >
          <span className="planning-subsystem-brand-logo">
            {siteConfig.logo ? <img src={siteConfig.logo} alt="" /> : <CloudOutlined />}
          </span>
          <span className="planning-subsystem-brand-title">{siteConfig.siteName || FALLBACK_SITE_NAME}</span>
        </button>

        <nav className="planning-subsystem-nav" aria-label="主导航">
          {sidebarSections.map((item) => {
            if (item.type === 'section') {
              return (
                <div key={item.key} className="planning-subsystem-nav-section">
                  {item.label}
                </div>
              );
            }

            const Icon = item.icon;
            const expandable = Array.isArray(item.children) && item.children.length > 0;
            const descendantActive = expandable && item.children.some((child) => isSidebarEntryActive(child));
            const selfActive = Boolean(item.match?.(pathname));
            const active = selfActive || (sidebarCollapsed && descendantActive);
            const expanded = expandable && expandedSidebarKeys.includes(item.key) && !sidebarCollapsed;

            return (
              <div key={item.key} className={`planning-subsystem-nav-group${expanded ? ' is-expanded' : ''}`}>
                <button
                  type="button"
                  className={`planning-subsystem-nav-item${active ? ' is-active' : ''}${descendantActive ? ' is-descendant-active' : ''}${expandable ? ' is-expandable' : ''}`}
                  onClick={() => {
                    if (expandable) {
                      toggleSidebarGroup(item.key);
                      return;
                    }
                    handleSidebarLeafClick(item);
                  }}
                  title={item.label}
                  aria-expanded={expandable ? expanded : undefined}
                >
                  <Icon className="planning-subsystem-nav-icon" />
                  <span className="planning-subsystem-nav-label">{item.label}</span>
                  {expandable ? (
                    <span className="planning-subsystem-nav-chevron">
                      {expanded ? <DownOutlined /> : <RightOutlined />}
                    </span>
                  ) : null}
                </button>

                {expandable && expanded ? (
                  <div className="planning-subsystem-subnav">
                    {item.children.map((child) => {
                      const ChildIcon = child.icon;
                      const childActive = isSidebarEntryActive(child);
                      return (
                        <button
                          key={child.key}
                          type="button"
                          className={`planning-subsystem-subnav-item${childActive ? ' is-active' : ''}`}
                          onClick={() => handleSidebarLeafClick(child)}
                          title={child.label}
                        >
                          <ChildIcon className="planning-subsystem-subnav-icon" />
                          <span>{child.label}</span>
                        </button>
                      );
                    })}
                  </div>
                ) : null}
              </div>
            );
          })}
        </nav>

        <div className="planning-subsystem-sidebar-bottom">
          <div className="planning-subsystem-sidebar-separator" />
          <div className="planning-subsystem-theme-row" title={sidebarDarkMode ? '关闭侧栏暗黑模式' : '开启侧栏暗黑模式'}>
            {sidebarDarkMode ? <MoonOutlined /> : <SunOutlined />}
            <span className="planning-subsystem-theme-label">暗黑模式</span>
            <Switch
              size="small"
              checked={sidebarDarkMode}
              onChange={handleSidebarDarkModeChange}
              aria-label="侧栏暗黑模式"
            />
          </div>
          <div className="planning-subsystem-account-row">
            <button
              type="button"
              className="planning-subsystem-collapse"
              onClick={() => setSidebarCollapsed((value) => !value)}
              title={sidebarCollapsed ? '展开侧边栏' : '收起侧边栏'}
            >
              {sidebarCollapsed ? <MenuUnfoldOutlined /> : <MenuFoldOutlined />}
              <span className="planning-subsystem-collapse-label">{sidebarCollapsed ? '展开' : '收起'}</span>
            </button>

            <Dropdown menu={{ items: userMenu }} trigger={['click']} placement="topRight">
              <button type="button" className="planning-subsystem-user" title={userDisplayName}>
                <img src={userAvatar} alt={userDisplayName} />
                <span className="planning-subsystem-user-copy">
                  <strong>{userDisplayName}</strong>
                </span>
                <span className="planning-subsystem-user-more" aria-hidden="true">
                  <span />
                  <span />
                  <span />
                </span>
              </button>
            </Dropdown>
          </div>
        </div>
      </aside>

      <main className={`planning-subsystem-content${isImmersivePlanningRoute ? ' is-immersive' : ''}`}>
        <ErrorBoundary key={location.pathname}>
          <Outlet context={{ sidebarCollapsed, setSidebarCollapsed }} />
        </ErrorBoundary>
      </main>

      <style>{`
        .planning-subsystem-shell {
          --sidebar-width: var(--sycm-sidebar-width);
          --sidebar-collapsed-width: var(--sycm-sidebar-collapsed-width);
          --sidebar-bg: var(--sycm-sidebar-bg);
          --sidebar-border: var(--sycm-sidebar-border);
          --sidebar-active-bg: var(--sycm-sidebar-active-bg);
          --sidebar-active-text: var(--sycm-sidebar-active-text);
          --sidebar-hover-bg: var(--sycm-sidebar-hover-bg);
          --sidebar-icon: var(--sycm-sidebar-icon-active);
          --sidebar-icon-muted: var(--sycm-sidebar-icon);
          --sidebar-text: var(--sycm-sidebar-text);
          --sidebar-muted: var(--sycm-sidebar-muted);
          --sidebar-section: var(--sycm-sidebar-tertiary);
          --sidebar-accent: var(--sycm-sidebar-accent);
          display: flex;
          min-height: 100vh;
          background: var(--sycm-bg-page-surface);
          font-family: var(--sycm-font-family);
        }

        .planning-subsystem-shell.is-immersive {
          background: var(--sycm-bg-page-surface);
        }

        .planning-subsystem-shell.is-sidebar-dark {
          --sidebar-bg: var(--sycm-sidebar-dark-bg);
          --sidebar-border: var(--sycm-sidebar-dark-border);
          --sidebar-active-bg: var(--sycm-sidebar-dark-active-bg);
          --sidebar-active-text: var(--sycm-sidebar-dark-active-text);
          --sidebar-hover-bg: var(--sycm-sidebar-dark-hover-bg);
          --sidebar-icon: var(--sycm-sidebar-dark-icon-active);
          --sidebar-icon-muted: var(--sycm-sidebar-dark-icon);
          --sidebar-text: var(--sycm-sidebar-dark-text);
          --sidebar-muted: var(--sycm-sidebar-dark-muted);
          --sidebar-section: var(--sycm-sidebar-dark-tertiary);
          --sidebar-accent: var(--sycm-sidebar-dark-accent);
        }

        .planning-subsystem-sidebar {
          position: sticky;
          top: 0;
          display: flex;
          width: var(--sidebar-width);
          height: 100vh;
          flex: 0 0 var(--sidebar-width);
          flex-direction: column;
          overflow: hidden;
          padding: var(--sycm-space-md) var(--sycm-space-xs) var(--sycm-space-sm);
          border-right: 1px solid var(--sidebar-border);
          background: var(--sidebar-bg);
          box-shadow: var(--sycm-shadow-card);
          transition:
            width 0.25s ease,
            flex-basis 0.25s ease,
            padding 0.25s ease;
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-sidebar {
          width: var(--sidebar-collapsed-width);
          flex-basis: var(--sidebar-collapsed-width);
          align-items: center;
          padding: var(--sycm-space-md) var(--sycm-space-xs) var(--sycm-space-sm);
        }

        .planning-subsystem-brand {
          display: inline-flex;
          align-items: center;
          width: 100%;
          min-height: 52px;
          justify-content: flex-start;
          gap: 12px;
          margin-bottom: var(--sycm-space-sm);
          padding: 0 10px;
          border: 0;
          border-radius: var(--sycm-radius-sm);
          background: transparent;
          color: var(--sidebar-text);
          font-family: inherit;
          font-size: var(--sycm-font-size-title);
          font-weight: var(--sycm-font-weight-semibold);
          line-height: var(--sycm-line-height-tight);
          letter-spacing: 0;
          cursor: pointer;
        }

        .planning-subsystem-brand-logo {
          display: inline-flex;
          width: 32px;
          height: 32px;
          flex: 0 0 32px;
          align-items: center;
          justify-content: center;
          overflow: hidden;
          border-radius: var(--sycm-radius-sm);
          color: var(--sidebar-accent);
          font-size: 24px;
        }

        .planning-subsystem-brand-logo img {
          width: 100%;
          height: 100%;
          object-fit: contain;
          display: block;
        }

        .planning-subsystem-shell.is-sidebar-dark .planning-subsystem-brand-logo {
          padding: 4px;
          background: rgba(255, 255, 255, 0.94);
        }

        .planning-subsystem-brand-title {
          min-width: 0;
          overflow: hidden;
          text-overflow: ellipsis;
          white-space: nowrap;
        }

        .planning-subsystem-nav {
          display: flex;
          min-height: 0;
          flex: 1;
          flex-direction: column;
          gap: 4px;
          overflow: auto;
          padding: 0;
        }

        .planning-subsystem-nav::-webkit-scrollbar {
          display: none;
        }






        .planning-subsystem-nav-group {
          display: flex;
          width: 100%;
          flex-direction: column;
          gap: 2px;
        }

        .planning-subsystem-nav-section {
          height: 18px;
          margin: 10px 8px 2px;
          color: var(--sidebar-section);
          font-size: var(--sycm-font-size-caption);
          font-weight: var(--sycm-font-weight-medium);
          line-height: 18px;
          letter-spacing: 0;
          white-space: nowrap;
        }

        .planning-subsystem-nav-item {
          position: relative;
          display: flex;
          width: 100%;
          height: 36px;
          align-items: center;
          justify-content: flex-start;
          gap: 10px;
          padding: 0 10px;
          border: 0;
          border-radius: var(--sycm-radius-sm);
          background: transparent;
          color: var(--sidebar-text);
          font-family: inherit;
          font-size: var(--sycm-font-size-body);
          font-weight: var(--sycm-font-weight-medium);
          line-height: var(--sycm-line-height-tight);
          text-align: left;
          cursor: pointer;
          transition: color 0.18s ease;
        }

        .planning-subsystem-nav-item::before,
        .planning-subsystem-subnav-item::before {
          content: '';
          position: absolute;
          z-index: 0;
          inset: 0 24px 0 -8px;
          border-radius: 0 var(--sycm-radius-pill) var(--sycm-radius-pill) 0;
          background: transparent;
          pointer-events: none;
          transition: background-color 0.18s ease;
        }

        .planning-subsystem-nav-item > *,
        .planning-subsystem-subnav-item > * {
          position: relative;
          z-index: 1;
        }

        .planning-subsystem-nav-item:focus,
        .planning-subsystem-subnav-item:focus {
          outline: none;
        }

        .planning-subsystem-nav-item:focus-visible::before,
        .planning-subsystem-subnav-item:focus-visible::before {
          box-shadow: inset 0 0 0 var(--sycm-line-width-base) var(--sycm-color-primary-border);
        }

        .planning-subsystem-nav-item:hover {
          color: var(--sidebar-text);
        }

        .planning-subsystem-nav-item:hover::before {
          background: var(--sidebar-hover-bg);
        }

        .planning-subsystem-nav-item.is-active {
          color: var(--sidebar-active-text);
          font-weight: var(--sycm-font-weight-semibold);
          box-shadow: none;
        }

        .planning-subsystem-nav-item.is-active::before {
          background: var(--sidebar-active-bg);
        }

        .planning-subsystem-nav-item.is-descendant-active:not(.is-active) {
          color: var(--sidebar-active-text);
        }

        .planning-subsystem-nav-icon {
          flex: 0 0 17px;
          color: var(--sidebar-icon-muted);
          font-size: 15px;
        }

        .planning-subsystem-nav-item.is-active .planning-subsystem-nav-icon,
        .planning-subsystem-nav-item.is-descendant-active .planning-subsystem-nav-icon,
        .planning-subsystem-nav-item:hover .planning-subsystem-nav-icon {
          color: var(--sidebar-icon);
        }

        .planning-subsystem-nav-label {
          min-width: 0;
          flex: 1;
          overflow: hidden;
          text-overflow: ellipsis;
          white-space: nowrap;
        }

        .planning-subsystem-nav-chevron {
          display: inline-flex;
          width: 12px;
          height: 12px;
          flex: 0 0 12px;
          align-items: center;
          justify-content: center;
          margin-left: auto;
          color: var(--sidebar-section);
          font-size: var(--sycm-font-size-micro);
          line-height: 1;
        }

        .planning-subsystem-subnav {
          display: flex;
          width: 100%;
          flex-direction: column;
          gap: 2px;
          margin: 0 0 4px;
        }

        .planning-subsystem-subnav-item {
          position: relative;
          display: flex;
          width: 100%;
          height: var(--sycm-control-height-sm);
          align-items: center;
          justify-content: flex-start;
          gap: 9px;
          padding: 0 8px 0 36px;
          border: 0;
          border-radius: var(--sycm-radius-sm);
          background: transparent;
          color: var(--sidebar-muted);
          font-family: inherit;
          font-size: var(--sycm-font-size-caption);
          font-weight: var(--sycm-font-weight-medium);
          line-height: 18px;
          text-align: left;
          cursor: pointer;
          transition: color 0.18s ease;
        }

        .planning-subsystem-subnav-item:hover {
          color: var(--sidebar-text);
        }

        .planning-subsystem-subnav-item:hover::before {
          background: var(--sidebar-hover-bg);
        }

        .planning-subsystem-subnav-item.is-active {
          color: var(--sidebar-active-text);
          font-weight: var(--sycm-font-weight-semibold);
        }

        .planning-subsystem-subnav-item.is-active::before {
          background: var(--sidebar-active-bg);
        }

        .planning-subsystem-subnav-icon {
          flex: 0 0 14px;
          color: var(--sidebar-icon-muted);
          font-size: var(--sycm-font-size-caption);
        }

        .planning-subsystem-subnav-item:hover .planning-subsystem-subnav-icon,
        .planning-subsystem-subnav-item.is-active .planning-subsystem-subnav-icon {
          color: var(--sidebar-icon);
        }

        .planning-subsystem-nav-badge {
          display: inline-flex;
          min-width: 18px;
          height: 18px;
          align-items: center;
          justify-content: center;
          border-radius: var(--sycm-radius-pill);
          padding: 0 5px;
          background: var(--sycm-bg-subtle);
          color: var(--sycm-text-secondary);
          font-size: var(--sycm-font-size-caption);
          font-weight: var(--sycm-font-weight-medium);
          box-shadow: none;
        }

        .planning-subsystem-sidebar-bottom {
          display: flex;
          flex-direction: column;
          gap: 6px;
          margin-top: 10px;
        }

        .planning-subsystem-sidebar-separator {
          height: 1px;
          margin: 6px 0;
          background: var(--sidebar-border);
        }

        .planning-subsystem-theme-row {
          display: flex;
          width: 100%;
          height: var(--sycm-control-height);
          align-items: center;
          gap: var(--sycm-space-xs);
          padding: 0 8px;
          border-radius: var(--sycm-radius-sm);
          color: var(--sidebar-muted);
          font-size: var(--sycm-font-size-caption);
          font-weight: var(--sycm-font-weight-medium);
        }

        .planning-subsystem-theme-row:hover {
          background: var(--sidebar-hover-bg);
          color: var(--sidebar-text);
        }

        .planning-subsystem-theme-row > .anticon {
          flex: 0 0 16px;
          color: var(--sidebar-icon-muted);
          font-size: 14px;
        }

        .planning-subsystem-theme-label {
          min-width: 0;
          flex: 1;
          white-space: nowrap;
        }

        .planning-subsystem-theme-row .ant-switch {
          flex: 0 0 auto;
          background: var(--sidebar-border);
        }

        .planning-subsystem-theme-row .ant-switch.ant-switch-checked {
          background: var(--sidebar-accent);
        }

        .planning-subsystem-account-row {
          display: grid;
          width: 100%;
          min-width: 0;
          grid-template-columns: auto minmax(0, 1fr);
          align-items: center;
          gap: 4px;
        }

        .planning-subsystem-collapse {
          display: flex;
          width: auto;
          height: var(--sycm-control-height-sm);
          flex: 0 0 auto;
          align-items: center;
          justify-content: flex-start;
          gap: var(--sycm-space-xs);
          padding: 0 8px;
          border: 0;
          border-radius: var(--sycm-radius-sm);
          background: transparent;
          color: var(--sidebar-muted);
          font-family: inherit;
          font-size: var(--sycm-font-size-caption);
          font-weight: var(--sycm-font-weight-medium);
          cursor: pointer;
        }

        .planning-subsystem-collapse:hover {
          background: var(--sidebar-hover-bg);
          color: var(--sidebar-text);
        }

        .planning-subsystem-collapse .anticon {
          flex: 0 0 16px;
          font-size: 14px;
        }

        .planning-subsystem-user {
          display: flex;
          width: 100%;
          min-width: 0;
          min-height: var(--sycm-control-height-sm);
          align-items: center;
          gap: 8px;
          margin-top: 0;
          padding: 0 8px;
          border: 0;
          border-radius: var(--sycm-radius-sm);
          background: transparent;
          color: var(--sidebar-text);
          font-family: inherit;
          text-align: left;
          cursor: pointer;
        }

        .planning-subsystem-user:hover {
          background: var(--sidebar-hover-bg);
        }

        .planning-subsystem-user img {
          width: 20px;
          height: 20px;
          flex: 0 0 20px;
          border-radius: var(--sycm-radius-pill);
          object-fit: cover;
          background: var(--sycm-bg-subtle);
        }

        .planning-subsystem-user-copy {
          display: block;
          min-width: 0;
          flex: 1;
        }

        .planning-subsystem-user-copy strong {
          overflow: hidden;
          color: var(--sidebar-text);
          font-size: var(--sycm-font-size-caption);
          font-weight: var(--sycm-font-weight-medium);
          text-overflow: ellipsis;
          white-space: nowrap;
        }

        .planning-subsystem-user-more {
          display: inline-flex;
          width: 4px;
          flex: 0 0 4px;
          align-items: center;
          justify-content: center;
          flex-direction: column;
          gap: 3px;
          color: var(--sidebar-muted);
        }

        .planning-subsystem-user-more span {
          width: 3px;
          height: 3px;
          border-radius: var(--sycm-radius-pill);
          background: currentColor;
        }

        .planning-subsystem-content {
          min-width: 0;
          height: 100vh;
          flex: 1;
          overflow: auto;
          padding: 0;
          background: var(--sycm-bg-page-surface);
        }

        .planning-subsystem-content.is-immersive {
          height: 100vh;
          padding: 0;
        }

        .planning-subsystem-content::-webkit-scrollbar {
          width: 8px;
          height: 8px;
        }

        .planning-subsystem-content::-webkit-scrollbar-track {
          background: transparent;
        }

        .planning-subsystem-content::-webkit-scrollbar-thumb {
          background: var(--sycm-border-strong);
          border-radius: var(--sycm-radius-pill);
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-brand,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-nav-item,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-theme-row,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-collapse,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-user {
          justify-content: center;
          padding-right: 0;
          padding-left: 0;
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-brand-title,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-nav-label,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-nav-badge,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-nav-chevron,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-nav-section,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-subnav,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-theme-label,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-collapse-label,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-user-copy,
        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-user-more {
          display: none;
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-nav-item {
          width: 36px;
          margin-left: 0;
          border-radius: var(--sycm-radius-pill);
        }




        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-nav-item::before {
          inset: 0;
          border-radius: var(--sycm-radius-pill);
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-theme-row {
          width: 36px;
          min-width: 36px;
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-account-row {
          display: flex;
          width: 36px;
          flex-direction: column;
          gap: 6px;
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-theme-row > .anticon {
          display: none;
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-collapse {
          width: 36px;
          min-width: 36px;
          color: var(--sidebar-icon-muted);
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-collapse:hover {
          color: var(--sidebar-icon);
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-collapse .anticon {
          display: inline-flex;
          flex: 0 0 16px;
          align-items: center;
          justify-content: center;
          color: currentColor;
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-sidebar-separator {
          width: var(--sycm-control-height-sm);
        }

        .planning-subsystem-shell.is-sidebar-collapsed .planning-subsystem-user img {
          width: 20px;
          height: 20px;
        }

        @media (max-width: 768px) {
          .planning-subsystem-shell {
            --sidebar-width: var(--sycm-sidebar-collapsed-width);
          }

          .planning-subsystem-sidebar {
            width: var(--sidebar-width);
            flex-basis: var(--sidebar-width);
            align-items: center;
            padding: var(--sycm-space-md) var(--sycm-space-xs) var(--sycm-space-sm);
          }

          .planning-subsystem-content {
            height: 100vh;
          }

          .planning-subsystem-content.is-immersive {
            height: 100vh;
          }

          .planning-subsystem-nav-item,
          .planning-subsystem-nav-item:hover,
          .planning-subsystem-nav-item.is-active {
            width: 36px;
            margin-left: 0;
            padding-right: 0;
            padding-left: 0;
            border-radius: var(--sycm-radius-pill);
            justify-content: center;
          }

          .planning-subsystem-nav-item::before {
            inset: 0;
            border-radius: var(--sycm-radius-pill);
          }




          .planning-subsystem-brand-title,
          .planning-subsystem-nav-label,
          .planning-subsystem-nav-badge,
          .planning-subsystem-nav-chevron,
          .planning-subsystem-nav-section,
          .planning-subsystem-subnav,
          .planning-subsystem-theme-label,
          .planning-subsystem-collapse-label,
          .planning-subsystem-user-copy,
          .planning-subsystem-user-more {
            display: none;
          }
        }
      `}</style>
    </div>
  );
};

export default BasicLayout;