feat(popup): add email capture popup with Mautic integration

- Email capture popup with scroll (10%) and exit intent triggers
- First name field and full tracking (UTM, device, time on page)
- Mautic API integration for contact creation
- GeoIP detection for country/region
- 4 locale support (sr, en, de, fr)
- Mautic tracking script in layout

src/hooks/useVisitorStore.ts

@@ -0,0 +1,100 @@
+"use client";
+
+import { useEffect, useState, useCallback } from "react";
+
+const STORAGE_KEY = "manoonoils-visitor";
+const SESSION_DURATION_HOURS = 24;
+
+interface VisitorState {
+  visitorId: string;
+  popupShown: boolean;
+  popupShownAt: number | null;
+  popupTrigger: "scroll" | "exit" | null;
+  subscribed: boolean;
+}
+
+export function useVisitorStore() {
+  const [state, setState] = useState<VisitorState>({
+    visitorId: "",
+    popupShown: false,
+    popupShownAt: null,
+    popupTrigger: null,
+    subscribed: false,
+  });
+
+  useEffect(() => {
+    // Check for reset flag in URL
+    if (typeof window !== 'undefined' && window.location.search.includes('reset-popup=true')) {
+      localStorage.removeItem(STORAGE_KEY);
+      console.log("[VisitorStore] Reset popup tracking");
+    }
+    
+    const stored = localStorage.getItem(STORAGE_KEY);
+    if (stored) {
+      const parsed = JSON.parse(stored);
+      setState(parsed);
+      console.log("[VisitorStore] Loaded state:", parsed);
+    } else {
+      const newState: VisitorState = {
+        visitorId: generateVisitorId(),
+        popupShown: false,
+        popupShownAt: null,
+        popupTrigger: null,
+        subscribed: false,
+      };
+      localStorage.setItem(STORAGE_KEY, JSON.stringify(newState));
+      setState(newState);
+      console.log("[VisitorStore] Created new state:", newState);
+    }
+  }, []);
+
+  const canShowPopup = useCallback((): boolean => {
+    if (state.subscribed) {
+      console.log("[VisitorStore] canShowPopup: false (already subscribed)");
+      return false;
+    }
+    
+    if (!state.popupShown || !state.popupShownAt) {
+      console.log("[VisitorStore] canShowPopup: true (never shown)");
+      return true;
+    }
+    
+    const hoursPassed = (Date.now() - state.popupShownAt) / (1000 * 60 * 60);
+    const canShow = hoursPassed >= SESSION_DURATION_HOURS;
+    console.log("[VisitorStore] canShowPopup:", canShow, "hours passed:", hoursPassed);
+    return canShow;
+  }, [state.popupShown, state.popupShownAt, state.subscribed]);
+
+  const markPopupShown = useCallback((trigger: "scroll" | "exit") => {
+    const newState: VisitorState = {
+      ...state,
+      popupShown: true,
+      popupShownAt: Date.now(),
+      popupTrigger: trigger,
+    };
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(newState));
+    setState(newState);
+  }, [state]);
+
+  const markSubscribed = useCallback(() => {
+    const newState: VisitorState = {
+      ...state,
+      subscribed: true,
+    };
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(newState));
+    setState(newState);
+    console.log("[VisitorStore] Marked as subscribed");
+  }, [state]);
+
+  return {
+    visitorId: state.visitorId,
+    canShowPopup,
+    markPopupShown,
+    markSubscribed,
+    popupTrigger: state.popupTrigger,
+  };
+}
+
+function generateVisitorId(): string {
+  return `${Date.now()}-${Math.random().toString(36).substr(2, 9)}`;
+}