CRM_ENVR/src/components/layout/app-shell.tsx

"use client"

import { useState, useEffect } from "react"
import { usePathname } from "next/navigation"
import { motion, AnimatePresence } from "framer-motion"
import { Sidebar } from "./sidebar"
import { Topbar } from "./topbar"
import { SystemMonitor } from "./system-monitor"

interface AppShellProps {
  children: React.ReactNode
}

export function AppShell({ children }: AppShellProps) {
  const [sidebarCollapsed, setSidebarCollapsed] = useState(false)
  const [mobileOpen, setMobileOpen] = useState(false)
  const pathname = usePathname()

  // Close mobile sidebar on route change
  useEffect(() => {
    setMobileOpen(false)
  }, [pathname])

  // Persist sidebar state
  useEffect(() => {
    const saved = localStorage.getItem("sidebar-collapsed")
    if (saved) setSidebarCollapsed(saved === "true")
  }, [])

  const toggleSidebar = () => {
    const next = !sidebarCollapsed
    setSidebarCollapsed(next)
    localStorage.setItem("sidebar-collapsed", String(next))
  }

  return (
    <div className="min-h-screen bg-[#F8F8F8] dark:bg-[#0A0A0A] relative overflow-hidden"
      style={{
        backgroundImage: "radial-gradient(circle, #CC000010 1px, transparent 1px), radial-gradient(circle, #0033CC06 1px, transparent 1px)",
        backgroundSize: "28px 28px, 14px 14px",
        backgroundPosition: "0 0, 7px 7px",
      }}
    >
      {/* Spider-Man top gradient bar */}
      <div className="fixed top-0 left-0 right-0 h-[3px] w-full bg-gradient-to-r from-[#CC0000] via-[#FFFFFF] to-[#0033CC] dark:from-[#FF1111] dark:via-[#FFFFFF] dark:to-[#1144FF] z-50" />

      {/* Corner spider webs */}
      <div className="hidden lg:block fixed top-0 left-0 pointer-events-none z-0 opacity-[0.07] dark:opacity-[0.12]">
        <svg width="180" height="180" viewBox="0 0 180 180" fill="none" xmlns="http://www.w3.org/2000/svg">
          <line x1="0" y1="0" x2="180" y2="0" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="180" y2="60" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="180" y2="120" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="180" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="120" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="60" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="0" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <path d="M0,30 Q30,30 30,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,60 Q60,60 60,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,90 Q90,90 90,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,120 Q120,120 120,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,150 Q150,150 150,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,180 Q180,180 180,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
        </svg>
      </div>
      <div className="hidden lg:block fixed top-0 right-0 pointer-events-none z-0 opacity-[0.07] dark:opacity-[0.12]">
        <svg width="180" height="180" viewBox="0 0 180 180" fill="none" xmlns="http://www.w3.org/2000/svg" style={{ transform: "scaleX(-1)" }}>
          <line x1="0" y1="0" x2="180" y2="0" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="180" y2="60" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="180" y2="120" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="180" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="120" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="60" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <line x1="0" y1="0" x2="0" y2="180" stroke="#CC0000" strokeWidth="0.8"/>
          <path d="M0,30 Q30,30 30,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,60 Q60,60 60,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,90 Q90,90 90,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,120 Q120,120 120,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,150 Q150,150 150,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
          <path d="M0,180 Q180,180 180,0" stroke="#CC0000" strokeWidth="0.8" fill="none"/>
        </svg>
      </div>

      <SystemMonitor />
      <Sidebar
        collapsed={sidebarCollapsed}
        onToggle={toggleSidebar}
        mobileOpen={mobileOpen}
        onMobileClose={() => setMobileOpen(false)}
      />

      <div className={cn("transition-all duration-300", sidebarCollapsed ? "lg:ml-16" : "lg:ml-64")}>
        <Topbar onMenuClick={() => setMobileOpen(true)} />

        <main className="flex-1 p-4 lg:p-6">
          <AnimatePresence mode="wait">
            <motion.div
              key={pathname}
              initial={{ opacity: 0, y: 8 }}
              animate={{ opacity: 1, y: 0 }}
              exit={{ opacity: 0, y: -8 }}
              transition={{ duration: 0.2 }}
            >
              {children}
            </motion.div>
          </AnimatePresence>
        </main>
      </div>
    </div>
  )
}

function cn(...classes: (string | boolean | undefined | null)[]) {
  return classes.filter(Boolean).join(" ")
}