diff --git a/components/sidebar/tab-dropdown.tsx b/components/sidebar/tab-dropdown.tsx
index 1034b67..6df6cfa 100644
--- a/components/sidebar/tab-dropdown.tsx
+++ b/components/sidebar/tab-dropdown.tsx
@@ -1,5 +1,5 @@
 import React from 'react';
-import { Tab } from '../../util';
+import browserAPI, { Tab } from '../../lib/browser-api';
 
 export default function TabDropdown({
     setPickedTab,
@@ -10,7 +10,7 @@ export default function TabDropdown({
 }) {
     const [tabs, setTabs] = React.useState<Tab[]>([]);
     React.useEffect(() => {
-        browser.tabs.query({ currentWindow: true }).then(setTabs);
+        browserAPI.tabs.query({ currentWindow: true }).then(setTabs);
     }, []);
     return (
         <select
@@ -27,4 +27,4 @@ export default function TabDropdown({
             ))}
         </select>
     );
-}
+}
\ No newline at end of file
diff --git a/components/toolbar/toolbar.tsx b/components/toolbar/toolbar.tsx
index 6751f91..2b090c5 100644
--- a/components/toolbar/toolbar.tsx
+++ b/components/toolbar/toolbar.tsx
@@ -1,20 +1,18 @@
 import React, { Fragment } from 'react';
 import ReactDOM from 'react-dom';
-import { useEmitter } from '../../util';
 import { getMemory } from '../../memory';
+import { useEmitter, getshorthost } from '../../util';
+import browserAPI from '../../lib/browser-api';
 
 async function getCurrentTab() {
-    const [tab] = await browser.tabs.query({
+    const [tab] = await browserAPI.tabs.query({
         active: true,
-        windowId: browser.windows.WINDOW_ID_CURRENT,
+        windowId: browserAPI.windows.WINDOW_ID_CURRENT,
     });
     return tab;
 }
 
-import './../../styles/global.scss';
-import './toolbar.scss';
-
-function isDomainHighlySuspicious(domain: string): boolean {
+function isDomainHighlySuspicious(domain: string) {
     return (
         domain.includes('facebook') ||
         domain.includes('twitter') ||
@@ -27,19 +25,19 @@ const Toolbar = () => {
     const [origin, setOrigin] = React.useState<string | null>(null);
     const [eventCounts] = useEmitter(getMemory());
     const [cookieDomainCopy, setCookieDomainCopy] = React.useState<string | null>(null);
-    const [_, setMarksOccurrence] = React.useState<boolean>(false);
+    const [_, setMarksOccurrence] = React.useState(false);
     const [exposedOriginDomainCopy, setExposedOriginDomainCopy] = React.useState<string | null>(
         null
     );
 
-    const first_sentence_cookie = 'Strona dokonała zapisu i odczytu plików Cookie dla domen ';
+    const first_sentence_cookie =
+        'Strona dokonała zapisu i odczytu plików Cookie dla domen ';
     const first_sentence_history =
         'Część informacji o Twojej historii przeglądania została wysłana do ';
 
     React.useEffect(() => {
         const listener = async () => {
             const tab = await getCurrentTab();
-
             if (tab !== undefined && tab.url) {
                 const url = new URL(tab.url);
                 if (url.origin.startsWith('moz-extension')) {
@@ -50,26 +48,27 @@ const Toolbar = () => {
                 console.warn('Out of the tab scope');
             }
         };
-
-        browser.tabs.onUpdated.addListener(listener);
+        browserAPI.tabs.onUpdated.addListener(listener);
         listener();
         return () => {
-            browser.tabs.onUpdated.removeListener(listener);
+            browserAPI.tabs.onUpdated.removeListener(listener);
         };
     });
 
     React.useEffect(() => {
         if (!origin) return;
+
         const exposedOriginDomains = Object.values(getMemory().getClustersForOrigin(origin))
             .filter((cluster) => cluster.exposesOrigin())
             .sort((cluster1, cluster2) =>
                 isDomainHighlySuspicious(cluster1.id)
                     ? -1
                     : isDomainHighlySuspicious(cluster2.id)
-                      ? 1
-                      : 0
+                    ? 1
+                    : 0
             )
             .map((cluster) => cluster.id);
+
         setExposedOriginDomainCopy('');
 
         switch (exposedOriginDomains.length) {
@@ -100,16 +99,18 @@ const Toolbar = () => {
 
     React.useEffect(() => {
         if (!origin) return;
+
         const cookieDomains = Object.values(getMemory().getClustersForOrigin(origin))
             .filter((cluster) => cluster.hasCookies())
             .sort((cluster1, cluster2) =>
                 isDomainHighlySuspicious(cluster1.id)
                     ? -1
                     : isDomainHighlySuspicious(cluster2.id)
-                      ? 1
-                      : 0
+                    ? 1
+                    : 0
             )
             .map((cluster) => cluster.id);
+
         setCookieDomainCopy('');
 
         switch (cookieDomains.length) {
@@ -128,7 +129,7 @@ const Toolbar = () => {
                 break;
             default:
                 setCookieDomainCopy(
-                    `${cookieDomains[0]}, ${cookieDomains[1]} (i ${
+                    `${cookieDomains[0]}, ${cookieDomains[1]} (i ${
                         cookieDomains.length - 2 < 2 ? 2 : cookieDomains.length - 2
                     } innych).`
                 );
@@ -136,44 +137,37 @@ const Toolbar = () => {
         }
     }, [eventCounts['*'], origin]);
 
-    React.useEffect(() => {
-        if (!origin) return;
-        for (const cluster of Object.values(getMemory().getClustersForOrigin(origin))) {
-            if (cluster.hasMarks()) {
-                return setMarksOccurrence(true);
-            }
-        }
-
-        return setMarksOccurrence(false);
-    }, [eventCounts['*']]);
-
-    function autoMark() {
-        if (!origin) return;
-        for (const cluster of Object.values(getMemory().getClustersForOrigin(origin))) {
-            cluster.autoMark();
-        }
-        return setMarksOccurrence(true);
-    }
+    const autoMark = () => {
+        Object.values(getMemory().getClustersForOrigin(origin || '')).forEach((cluster) =>
+            cluster.autoMark()
+        );
+        setMarksOccurrence(true);
+    };
 
     return (
         <div className="toolbar">
             <header className={origin ? 'header' : 'header header--no-page'}>
-                <img src="../../assets/icon-addon.svg" height={32}></img>
+                <img src="../../assets/icon-addon.svg" height="24" />
                 <div className="webpage-metadata">
                     {origin ? (
-                        <>
-                            <span>Analiza strony</span>
-                            <span className="webpage-metadata--hyperlink">{origin}</span>
-                        </>
+                        <div className="webpage-metadata--hyperlink">{origin}</div>
                     ) : (
-                        <span>Przejdź do wybranej strony internetowej</span>
+                        <div>Rentgen - wtyczka do przeglądania</div>
                     )}
                 </div>
                 {origin ? (
+                    <button
+                        onClick={() => {
+                            window.close();
+                        }}
+                    >
+                        <img src="../../assets/icons/x_thick.svg" width="12" height="12" />
+                    </button>
+                ) : (
                     <a href="https://internet-czas-dzialac.pl">
                         <img src="/assets/icons/info_circle_outline.svg" width="20" height="20" />
                     </a>
-                ) : null}
+                )}
             </header>
 
             {origin ? (
@@ -183,30 +177,22 @@ const Toolbar = () => {
                         <div className="counters-wrapper">
                             <div className="counters">
                                 <div className="counter counter--cookies">
-                                    <img
-                                        src="/assets/icons/cookie.svg#color"
-                                        width="24"
-                                        height="24"
-                                    />
+                                    <img src="/assets/icons/cookie.svg#color" width="24" height="24" />
                                     <span data-event={`${eventCounts['*']}`}>
                                         {
-                                            Object.values(
-                                                getMemory().getClustersForOrigin(origin)
-                                            ).filter((cluster) => cluster.hasCookies()).length
+                                            Object.values(getMemory().getClustersForOrigin(origin)).filter(
+                                                (cluster) => cluster.hasCookies()
+                                            ).length
                                         }
                                     </span>
                                 </div>
                                 <div className="counter counter--browser-history">
-                                    <img
-                                        src="/assets/icons/warning.svg#color"
-                                        width="24"
-                                        height="24"
-                                    />
+                                    <img src="/assets/icons/warning.svg#color" width="24" height="24" />
                                     <span data-event={`${eventCounts['*']}`}>
                                         {
-                                            Object.values(
-                                                getMemory().getClustersForOrigin(origin)
-                                            ).filter((cluster) => cluster.exposesOrigin()).length
+                                            Object.values(getMemory().getClustersForOrigin(origin)).filter(
+                                                (cluster) => cluster.exposesOrigin()
+                                            ).length
                                         }
                                     </span>
                                 </div>
@@ -247,9 +233,9 @@ const Toolbar = () => {
                         <Fragment>
                             <section className="about">
                                 <p>
-                                    Takie przetwarzanie danych może być niezgodne z prawem. Przejdź
-                                    do analizy aby pomóc ustalić, czy ta strona nie narusza RODO lub
-                                    ustawy Prawo Komunikacji Elektronicznej.
+                                    Takie przetwarzanie danych może być niezgodne z&nbsp;prawem.
+                                    Przejdź do analizy aby pomóc ustalić, czy ta strona nie narusza
+                                    RODO lub ustawy Prawo Komunikacji Elektronicznej.
                                 </p>
                             </section>
                             <section className="actions">
@@ -261,7 +247,7 @@ const Toolbar = () => {
                                             `/components/sidebar/sidebar.html?origin=${origin}`,
                                             'new_tab'
                                         );
-                                        window.close(); // close toolbar popup
+                                        window.close();
                                     }}
                                 >
                                     Przejdź do analizy
@@ -281,4 +267,4 @@ const Toolbar = () => {
     );
 };
 
-ReactDOM.render(<Toolbar />, document.getElementById('toolbar'));
+ReactDOM.render(<Toolbar />, document.getElementById('toolbar'));
\ No newline at end of file
diff --git a/lib/browser-api/types.ts b/lib/browser-api/types.ts
index 8e7cf41..4723242 100644
--- a/lib/browser-api/types.ts
+++ b/lib/browser-api/types.ts
@@ -8,6 +8,33 @@
  * - memory.ts: browserAction.*, webRequest.*, cookies.*, extension.*
  */
 
+// Import full Request type from util.ts
+export type Request = {
+    cookieStoreId?: string;
+    documentUrl?: string;
+    frameId: number;
+    incognito?: boolean;
+    method: string;
+    originUrl: string;
+    parentFrameId: number;
+    proxyInfo?: {
+        host: string;
+        port: number;
+        type: string;
+        username: string;
+        proxyDNS: boolean;
+        failoverTimeout: number;
+    };
+    requestHeaders?: { name: string; value?: string; binaryValue?: number[] }[];
+    requestId: string;
+    tabId: number;
+    thirdParty?: boolean;
+    timeStamp: number;
+    type: string;
+    url: string;
+    urlClassification?: { firstParty: string[]; thirdParty: string[] };
+};
+
 // === Tab API (util.ts, tab-dropdown.tsx, toolbar.tsx) ===
 export interface Tab {
     id?: number;      // util.ts: tab.id, tab-dropdown.tsx: tab.id
@@ -37,23 +64,11 @@ export interface BadgeColorDetails {
 }
 
 // === WebRequest API (memory.ts) ===
-export interface RequestDetails {
-    requestId: string;                    // memory.ts: request.requestId
-    requestHeaders?: RequestHeader[];     // memory.ts: request.requestHeaders
-    // Note: ExtendedRequest konstruktor używa więcej pól, 
-    // ale tu skupiamy się na tym co bezpośrednio używa browser API
-}
-
-export interface RequestHeader {
-    name: string;
-    value?: string;
-}
-
 export interface RequestFilter {
     urls: string[];  // memory.ts: { urls: ['<all_urls>'] }
 }
 
-export type RequestListener = (details: RequestDetails) => void;
+export type RequestListener = (details: Request) => void;
 
 // === Cookies API (memory.ts) ===
 export interface Cookie {
diff --git a/memory.ts b/memory.ts
index 7b678aa..ed904a4 100644
--- a/memory.ts
+++ b/memory.ts
@@ -2,10 +2,11 @@ import ExtendedRequest from './extended-request';
 import { getshorthost } from './util';
 import { RequestCluster } from './request-cluster';
 import { SaferEmitter } from './safer-emitter';
+import browserAPI from './lib/browser-api';
 
 function setDomainsCount(counter: number, tabId: number) {
-    browser.browserAction.setBadgeText({ text: counter < 0 ? '0' : counter.toString(), tabId });
-    browser.browserAction.setTitle({
+    browserAPI.badge.setBadgeText({ text: counter < 0 ? '0' : counter.toString(), tabId });
+    browserAPI.badge.setTitle({
         title: 'Rentgen',
         tabId,
     });
@@ -32,8 +33,8 @@ export default class Memory extends SaferEmitter {
         Object.values(this.getClustersForOrigin(request.origin)).some((cluster) =>
             cluster.hasCookies()
         )
-            ? browser.browserAction.setBadgeBackgroundColor({ color: '#ff726b' })
-            : browser.browserAction.setBadgeBackgroundColor({ color: '#ffb900' });
+            ? browserAPI.badge.setBadgeBackgroundColor({ color: '#ff726b' })
+            : browserAPI.badge.setBadgeBackgroundColor({ color: '#ffb900' });
 
         if (request.tabId >= 0) {
             setDomainsCount(
@@ -46,14 +47,14 @@ export default class Memory extends SaferEmitter {
     constructor() {
         super();
 
-        browser.webRequest.onBeforeRequest.addListener(
+        browserAPI.webRequest.onBeforeRequest.addListener(
             async (request) => {
                 new ExtendedRequest(request);
             },
             { urls: ['<all_urls>'] },
             ['requestBody']
         );
-        browser.webRequest.onBeforeSendHeaders.addListener(
+        browserAPI.webRequest.onBeforeSendHeaders.addListener(
             async (request) => {
                 const extendedRequest = ExtendedRequest.by_id[request.requestId].addHeaders(
                     request.requestHeaders || []
@@ -76,9 +77,9 @@ export default class Memory extends SaferEmitter {
 
     async removeCookiesFor(origin: string, shorthost?: string): Promise<void> {
         if (shorthost) {
-            const cookies = await browser.cookies.getAll({ domain: shorthost });
+            const cookies = await browserAPI.cookies.getAll({ domain: shorthost });
             for (const cookie of cookies) {
-                await browser.cookies.remove({
+                await browserAPI.cookies.remove({
                     name: cookie.name,
                     url: `https://${cookie.domain}`,
                 });
@@ -106,5 +107,9 @@ export function init() {
 }
 
 export function getMemory(): Memory {
-    return (browser.extension.getBackgroundPage().window as any).memory as Memory;
-}
+    const backgroundPage = browserAPI.extension.getBackgroundPage();
+    if (!backgroundPage) {
+        throw new Error('Background page not available');
+    }
+    return (backgroundPage.window as any).memory as Memory;
+}
\ No newline at end of file
diff --git a/util.ts b/util.ts
index 4820770..2f87878 100644
--- a/util.ts
+++ b/util.ts
@@ -1,11 +1,12 @@
 import { EventEmitter } from 'events';
 import React from 'react';
 import { DataLocation, Sources } from './stolen-data-entry';
+import browserAPI from './lib/browser-api';
 
 export type Unpromisify<T> = T extends Promise<infer R> ? R : T;
 export type Unarray<T> = T extends Array<infer R> ? R : T;
 
-export type Tab = Unarray<Unpromisify<ReturnType<typeof browser.tabs.query>>>;
+export type Tab = Unarray<Unpromisify<ReturnType<typeof browserAPI.tabs.query>>>;
 export type Request = {
     cookieStoreId?: string;
     documentUrl?: string; // RL of the document in which the resource will be loaded. For example, if the web page at "https://example.com" contains an image or an iframe, then the documentUrl for the image or iframe will be "https://example.com". For a top-level document, documentUrl is undefined.
@@ -89,7 +90,7 @@ export function parseCookie(cookie: string): Record<string, string> {
 }
 
 export async function getTabByID(id: number) {
-    const tabs = await browser.tabs.query({ currentWindow: true });
+    const tabs = await browserAPI.tabs.query({ currentWindow: true });
     return tabs.find((tab) => tab.id == id);
 }
 
@@ -317,4 +318,4 @@ export function downloadText(filename: string, text: string) {
     element.click();
 
     document.body.removeChild(element);
-}
+}
\ No newline at end of file