diff --git a/package-lock.json b/package-lock.json
index c3e738c..7085eab 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,8 +12,9 @@
         "@zxing/browser": "^0.1.1",
         "date-fns": "^2.11.1",
         "gray-matter": "^4.0.2",
-        "next": "latest",
+        "next": "12.1.6",
         "next-pwa": "^5.5.4",
+        "next-themes": "^0.2.1",
         "nostr-tools": "^1.0.1",
         "qrcode.react": "^3.0.2",
         "react": "17.0.2",
@@ -6503,6 +6504,16 @@
         "next": ">=9.0.0"
       }
     },
+    "node_modules/next-themes": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/next-themes/-/next-themes-0.2.1.tgz",
+      "integrity": "sha512-B+AKNfYNIzh0vqQQKqQItTS8evEouKD7H5Hj3kmuPERwddR2TxvDSFZuTj6T7Jfn1oyeUyJMydPl1Bkxkh0W7A==",
+      "peerDependencies": {
+        "next": "*",
+        "react": "*",
+        "react-dom": "*"
+      }
+    },
     "node_modules/next/node_modules/postcss": {
       "version": "8.4.5",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
@@ -13924,6 +13935,12 @@
         "workbox-window": "^6.5.3"
       }
     },
+    "next-themes": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/next-themes/-/next-themes-0.2.1.tgz",
+      "integrity": "sha512-B+AKNfYNIzh0vqQQKqQItTS8evEouKD7H5Hj3kmuPERwddR2TxvDSFZuTj6T7Jfn1oyeUyJMydPl1Bkxkh0W7A==",
+      "requires": {}
+    },
     "node-gyp-build": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.4.0.tgz",
diff --git a/package.json b/package.json
index 891f888..f39282a 100644
--- a/package.json
+++ b/package.json
@@ -16,8 +16,9 @@
     "@zxing/browser": "^0.1.1",
     "date-fns": "^2.11.1",
     "gray-matter": "^4.0.2",
-    "next": "latest",
+    "next": "12.1.6",
     "next-pwa": "^5.5.4",
+    "next-themes": "^0.2.1",
     "nostr-tools": "^1.0.1",
     "qrcode.react": "^3.0.2",
     "react": "17.0.2",
diff --git a/src/components/button/index.tsx b/src/components/button/index.tsx
index 5f0f503..d6a0ecb 100644
--- a/src/components/button/index.tsx
+++ b/src/components/button/index.tsx
@@ -8,11 +8,7 @@ type ButtonProps = {
 export const Button = ({ children, disabled, onClick, className }: ButtonProps) => {
   return (
     <div className={className}>
-      <button
-        className="bg-custom-black rounded-md px-6 py-3 w-full h-full shadow"
-        onClick={onClick}
-        disabled={disabled}
-      >
+      <button className="btn-main" onClick={onClick} disabled={disabled}>
         {children}
       </button>
     </div>
diff --git a/src/components/header/index.tsx b/src/components/header/index.tsx
index 38f5b87..740757c 100644
--- a/src/components/header/index.tsx
+++ b/src/components/header/index.tsx
@@ -5,10 +5,10 @@ import Link from "next/link"
 
 export function Header() {
   return (
-    <header className="bg-custom-green-light mb-5 mx-auto border-0 rounded-xl p-4 shadow-md">
-      <div className="container flex justify-between items-center">
+    <header className="mb-5 p-4">
+      <div className="container mx-auto flex justify-between items-center">
         <a href="/" className="py-1.5 mr-4 text-lg cursor-pointer">
-          <h1 className="text-xl">Sendstr</h1>
+          <h1 className="text-2xl text-primary font-semibold">Sendstr</h1>
         </a>
         <div className="flex items-center space-x-3">
           {/* <Link
@@ -17,11 +17,11 @@ export function Header() {
         >FAQ
         </Link> */}
           <a href="https://github.com/vilm3r/sendstr-web">
-            <DiGithubBadge className="inline text-3xl" title="Github" />
+            <DiGithubBadge className="inline text-3xl primary-hover" title="Github" />
           </a>
           <Link href="/settings">
             <div className="cursor-pointer">
-              <MdSettings className="inline text-2xl" title="Settings" />
+              <MdSettings className="inline text-2xl primary-hover" title="Settings" />
             </div>
           </Link>
         </div>
diff --git a/src/components/input/index.tsx b/src/components/input/index.tsx
index e4a71ab..5f1c394 100644
--- a/src/components/input/index.tsx
+++ b/src/components/input/index.tsx
@@ -15,7 +15,7 @@ export const Input = forwardRef(
     return (
       <div className={className}>
         <input
-          className="bg-custom-green-dark border-2 border-custom-black rounded w-full p-3"
+          className="bg-gray-100 dark:bg-gray-800 border-2 border-custom-black rounded w-full p-3"
           ref={ref}
           value={value}
           onChange={onChange}
diff --git a/src/components/toggle/index.tsx b/src/components/toggle/index.tsx
index 89114b7..1a7bfb3 100644
--- a/src/components/toggle/index.tsx
+++ b/src/components/toggle/index.tsx
@@ -5,20 +5,15 @@ type ToggleProps = {
 
 export const Toggle = ({ checked, onChange }: ToggleProps) => {
   return (
-    <label>
+    <label className="inline-flex relative items-center cursor-pointer">
       <input
         type="checkbox"
-        className="absolute overflow-hidden whitespace-nowrap h-[1px] w-[1px]"
+        className="sr-only peer"
         checked={checked}
         onChange={onChange}
+        readOnly
       />
-      <span className="bg-white border-2 border-custom-black rounded-3xl flex h-8 mr-[10px] relative w-16 cursor-pointer">
-        <span
-          className={`flex absolute left-[2px] bottom-[2px] justify-center h-6 w-6 rounded-full items-center transition ${
-            checked ? "bg-custom-black" : "translate-x-8 bg-custom-black/50"
-          }`}
-        ></span>
-      </span>
+      <div className="w-11 h-6 bg-gray-300 focus:outline-none peer-focus-visible:ring-2 rounded-full dark:bg-gray-700 peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all dark:border-gray-600 peer-checked:bg-primary"></div>
     </label>
   )
 }
diff --git a/src/pages/_app.tsx b/src/pages/_app.tsx
index 674ffd6..1293275 100644
--- a/src/pages/_app.tsx
+++ b/src/pages/_app.tsx
@@ -1,6 +1,7 @@
 import "../styles/global.css"
 import { AppProps } from "next/app"
 import { useEffect, useState } from "react"
+import { ThemeProvider } from "next-themes"
 
 export default function App({ Component, pageProps }: AppProps) {
   const [keys, setKeys] = useState<{
@@ -17,5 +18,9 @@ export default function App({ Component, pageProps }: AppProps) {
     })()
   }, [])
 
-  return <Component {...{ ...pageProps, keys }} />
+  return (
+    <ThemeProvider attribute="class">
+      <Component {...{ ...pageProps, keys }} />
+    </ThemeProvider>
+  )
 }
diff --git a/src/pages/index.tsx b/src/pages/index.tsx
index 9f502ed..9a73376 100644
--- a/src/pages/index.tsx
+++ b/src/pages/index.tsx
@@ -3,7 +3,6 @@ import Head from "next/head"
 
 import { Header } from "../components/header"
 import { Button } from "../components/button"
-import { Card } from "../components/card"
 import { SendView } from "../views/send"
 import { ReceiveView } from "../views/receive"
 import { NostrKeysType } from "../types"
@@ -17,28 +16,28 @@ export default function Home({ keys }: HomeProps) {
 
   const LandingView = () => (
     <div className="max-w-[64rem] m-auto">
-      <Card>
-        <div className="p-10">
-          <h1 className="text-2xl text-bold pb-5">Open source e2e encrypted bi-directional clipboard</h1>
-          <p className="pb-10">
-            Sendstr is an open source end-to-end encrypted bi-directional clipboard app built on top of{" "}
-            <a className="underline" href="https://github.com/nostr-protocol/nostr" target="_blank">
-              Nostr
-            </a>
-            . No login needed, new throwaway encryption keys are generated on page load, and the
-            default relay deletes messages after 1 hour. To get started open this page on another
-            device and choose one of the options below.
-          </p>
-          <div className="flex w-full">
-            <Button className="w-1/2 px-4" onClick={() => setClientType("send")}>
-              Send
-            </Button>
-            <Button className="w-1/2 px-4" onClick={() => setClientType("receive")}>
-              Receive
-            </Button>
-          </div>
+      <div className="p-10">
+        <h1 className="font-bold text-5xl md:text-7xl text-bold pb-10">
+          e2e encrypted shared clipboard
+        </h1>
+        <p className="pb-10 leading-relaxed">
+          Sendstr is an open source end-to-end encrypted shared clipboard app built on top of{" "}
+          <a className="underline" href="https://github.com/nostr-protocol/nostr" target="_blank">
+            Nostr
+          </a>
+          . No login needed, new throwaway encryption keys are generated on page load, and the
+          default relay deletes messages after 1 hour. To get started open this page on another
+          device and choose one of the options below.
+        </p>
+        <div className="flex w-full justify-between gap-8">
+          <Button className="w-1/2 shadow-lg" onClick={() => setClientType("send")}>
+            Send
+          </Button>
+          <Button className="w-1/2 shadow-lg" onClick={() => setClientType("receive")}>
+            Receive
+          </Button>
         </div>
-      </Card>
+      </div>
     </div>
   )
 
@@ -57,7 +56,7 @@ export default function Home({ keys }: HomeProps) {
     <>
       <Head>
         <title>Sendstr</title>
-        <meta name="title" content="Sendstr"/>
+        <meta name="title" content="Sendstr" />
         <meta name="viewport" content="initial-scale=1.0, width=device-width" />
         <meta
           name="description"
@@ -85,12 +84,12 @@ export default function Home({ keys }: HomeProps) {
         <link rel="manifest" href="/manifest.json" />
         <link rel="apple-touch-icon" href="/apple-touch-icon.png"></link>
       </Head>
-      <div className="bg-custom-green-dark min-h-screen">
+      <div className="min-h-screen">
         <div className="p-5">
           <div className="max-w-[80rem] mx-auto">
             <Header />
           </div>
-          <main>
+          <main className="max-w-2xl mx-auto px-4">
             <Page />
           </main>
         </div>
diff --git a/src/pages/settings/index.tsx b/src/pages/settings/index.tsx
index 0a80b39..d949536 100644
--- a/src/pages/settings/index.tsx
+++ b/src/pages/settings/index.tsx
@@ -1,6 +1,5 @@
-import { createRef, useState } from "react"
+import { createRef, useEffect, useState } from "react"
 import { Button } from "../../components/button"
-import { Card } from "../../components/card"
 import { Header } from "../../components/header"
 import {
   SettingsRelay,
@@ -13,6 +12,7 @@ import { Input } from "../../components/input"
 import { MdDelete } from "react-icons/md"
 import { Toggle } from "../../components/toggle"
 import Head from "next/head"
+import { useTheme } from "next-themes"
 
 type SettingsState = {
   relays: SettingsRelay[]
@@ -23,12 +23,50 @@ export default function Settings() {
     relays: typeof window !== "undefined" ? getRelays() : [],
   })
   const newPool = createRef<HTMLInputElement>()
+  const { theme, systemTheme, setTheme } = useTheme()
+  const [mounted, setMounted] = useState(false)
+
+  useEffect(() => {
+    setMounted(true)
+  }, [])
+
+  const ThemeToggle = () => {
+    if (!mounted) return null
+
+    const currentTheme = theme === "system" ? systemTheme : theme
+    const isDark = currentTheme === "dark"
+
+    const toggleHandler = () => setTheme(isDark ? "light" : "dark")
+
+    return (
+      <div onClick={toggleHandler} className="cursor-pointer">
+        <h2 className="text-2xl pb-5">Theme</h2>
+        <div className="flex justify-between">
+          <p className="lg:text-lg">Dark mode</p>
+          <div className="flex justify-center">
+            <div>
+              <div className="inline-flex relative items-center cursor-pointer">
+                <input
+                  type="checkbox"
+                  value=""
+                  className="sr-only peer"
+                  checked={isDark}
+                  readOnly
+                />
+                <div className="w-11 h-6 bg-gray-300 rounded-full dark:bg-gray-700 peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:left-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all dark:border-gray-600 peer-checked:bg-primary focus:outline-none peer-focus-visible:ring-2"></div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    )
+  }
 
   return (
     <>
       <Head>
         <title>Sendstr - Settings</title>
-        <meta name="title" content="Sendstr - Settings"/>
+        <meta name="title" content="Sendstr - Settings" />
         <meta name="viewport" content="initial-scale=1.0, width=device-width" />
         <meta
           name="description"
@@ -53,13 +91,13 @@ export default function Settings() {
         />
         <meta property="twitter:image" content="/favicon-16x16.png" />
       </Head>
-      <div className="bg-custom-green-dark min-h-screen">
+      <div className="min-h-screen">
         <div className="p-5">
           <div className="max-w-[80rem] mx-auto">
             <Header />
             <main className="max-w-[64rem] m-auto">
-              <Card>
-                <div className="max-w-[30rem] m-auto p-10">
+              <div className="max-w-[30rem] m-auto p-10">
+                <div className="pb-10">
                   <h2 className="text-2xl pb-5">Relays</h2>
                   <ul>
                     {settings.relays.map((relay) => (
@@ -95,7 +133,7 @@ export default function Settings() {
                   </ul>
                   <Input className="pt-5" ref={newPool} placeholder="Relay url" />
                   <Button
-                    className="pt-5"
+                    className="pt-5 shadow-lg"
                     onClick={() => {
                       addRelay({
                         url: newPool?.current?.value || "",
@@ -110,7 +148,10 @@ export default function Settings() {
                     Add Relay
                   </Button>
                 </div>
-              </Card>
+                <div className="pt-10">
+                  <ThemeToggle />
+                </div>
+              </div>
             </main>
           </div>
         </div>
diff --git a/src/styles/global.css b/src/styles/global.css
index dc1c5a1..689acc3 100644
--- a/src/styles/global.css
+++ b/src/styles/global.css
@@ -2,6 +2,39 @@
 @tailwind components;
 @tailwind utilities;
 
-body {
-    color: #FFFFFF
-}
\ No newline at end of file
+:root {
+    --orange: #fb8500;
+    --orange-light: #ffb703;
+    --green: #004f2d;
+    --green-light: #7dc95e;
+    --red: #ff4e33;
+    --red-light:#ff8370;
+}
+
+.light {
+    --primary: var(--orange);
+    --secondary: var(--green);
+    --warning: var(--red);
+}
+
+.dark {
+    --primary: var(--orange-light);
+    --secondary: var(--green-light);
+    --warning: var(--red-light);
+}
+
+@layer base {
+    body {
+        @apply dark:bg-black dark:text-gray-100 bg-white text-gray-900
+    }
+}
+
+@layer components {
+    .btn-main {
+      @apply bg-primary rounded-md px-6 py-3 w-full h-full shadow text-gray-100 dark:text-gray-900 font-semibold
+    }
+
+    .primary-hover {
+        @apply transition duration-300 hover:text-primary
+    }
+  }
diff --git a/src/views/receive/index.tsx b/src/views/receive/index.tsx
index 65df402..ae4b250 100644
--- a/src/views/receive/index.tsx
+++ b/src/views/receive/index.tsx
@@ -1,8 +1,8 @@
+import { useTheme } from "next-themes"
 import { QRCodeSVG } from "qrcode.react"
 import { useEffect, useRef, useState } from "react"
 import Toastify from "toastify-js"
 import { Button } from "../../components/button"
-import { Card } from "../../components/card"
 import { getLatestEvent, getReceivePeerKey, sendEncryptedMessage, subscribe } from "../../lib/nostr"
 import { debounce } from "../../lib/utils"
 import { NostrEventType, NostrKeysType, NostrType } from "../../types"
@@ -36,6 +36,8 @@ export const ReceiveView = ({ keys }: ReceiveViewProps) => {
   const [message, setMessage] = useState("")
   const events = useRef<{ [k: string]: NostrEventType } | null>(null)
   const nostr = useRef<NostrType | null>(null)
+  const { theme } = useTheme()
+  const isDarkMode = theme === "dark"
 
   const processEvent = (event: NostrEventType) => {
     events.current = { ...events.current, ...{ [event.id]: event } }
@@ -48,7 +50,7 @@ export const ReceiveView = ({ keys }: ReceiveViewProps) => {
       const { subs, relays } = await subscribe(keys, peerKey, processEvent)
       nostr.current = { subs, relays, ...keys }
       return () => {
-        nostr?.current?.subs.forEach(sub => sub.unsub())
+        nostr?.current?.subs.forEach((sub) => sub.unsub())
       }
     })()
   }, [peerKey])
@@ -69,56 +71,54 @@ export const ReceiveView = ({ keys }: ReceiveViewProps) => {
 
   return (
     <div className="max-w-[64rem] m-auto">
-      <Card>
-        <div className="p-10">
-          <div className="flex flex-col lg:flex-row">
-            {peerKey === "" && (
-              <div className="overflow-visible py-5 max-w-[20rem] mx-auto lg:pr-5">
-                <QRCodeSVG
-                  value={keys.pub}
-                  level="H"
-                  bgColor="transparent"
-                  fgColor="#3C3744"
-                  includeMargin={false}
-                  width="100%"
-                  height="100%"
-                />
+      <div className="p-10">
+        <div className="flex flex-col lg:flex-row">
+          {peerKey === "" && (
+            <div className="overflow-visible py-5 max-w-[20rem] mx-auto lg:pr-5">
+              <QRCodeSVG
+                value={keys.pub}
+                level="H"
+                bgColor="transparent"
+                fgColor={isDarkMode ? "#f3f4f6" : "black"}
+                includeMargin={false}
+                width="100%"
+                height="100%"
+              />
+            </div>
+          )}
+          <div className="flex flex-col items-center justify-center w-full">
+            <div>
+              <label className="flex flex-grow text-left">My pubkey:</label>
+              <div
+                id="mypubkey"
+                className="border-2 border-custom-black rounded-md p-2 bg-custom-green-dark break-all"
+              >
+                {keys.pub}
               </div>
-            )}
-            <div className="flex flex-col items-center justify-center w-full">
-              <div>
-                <label className="flex flex-grow text-left">My pubkey:</label>
-                <div
-                  id="mypubkey"
-                  className="border-2 border-custom-black rounded-md p-2 bg-custom-green-dark break-all"
+              <div className="py-6 max-w-[20rem] m-auto">
+                <Button
+                  className="shadow-lg"
+                  onClick={() => {
+                    navigator.clipboard.writeText(keys.pub).catch(console.warn)
+                    Toastify({
+                      text: "Pubkey copied",
+                      duration: 2000,
+                      close: false,
+                      gravity: "bottom",
+                      position: "center",
+                      stopOnFocus: false,
+                      className: "flex fixed bottom-0 bg-custom-black p-2 rounded left-[45%] z-50",
+                    }).showToast()
+                  }}
                 >
-                  {keys.pub}
-                </div>
-                <div className="py-6 max-w-[20rem] m-auto">
-                  <Button
-                    onClick={() => {
-                      navigator.clipboard.writeText(keys.pub).catch(console.warn)
-                      Toastify({
-                        text: "Pubkey copied",
-                        duration: 2000,
-                        close: false,
-                        gravity: "bottom",
-                        position: "center",
-                        stopOnFocus: false,
-                        className:
-                          "flex fixed bottom-0 bg-custom-black p-2 rounded left-[45%] z-50",
-                      }).showToast()
-                    }}
-                  >
-                    Copy Pubkey
-                  </Button>
-                </div>
+                  Copy Pubkey
+                </Button>
               </div>
             </div>
           </div>
-          <div>{peerKey !== '' && <Message message={message} onChange={onMessageChange} />}</div>
         </div>
-      </Card>
+        <div>{peerKey !== "" && <Message message={message} onChange={onMessageChange} />}</div>
+      </div>
     </div>
   )
 }
diff --git a/src/views/send/index.tsx b/src/views/send/index.tsx
index 4f7eed3..8c6d2e0 100644
--- a/src/views/send/index.tsx
+++ b/src/views/send/index.tsx
@@ -5,7 +5,6 @@ import { isMobile } from "react-device-detect"
 import { Input } from "../../components/input"
 import { MdQrCodeScanner } from "react-icons/md"
 import { IconButton } from "../../components/icon-button"
-import { Card } from "../../components/card"
 import { debounce } from "../../lib/utils"
 import { NostrEventType, NostrKeysType, NostrType } from "../../types"
 import { subscribe, sendEncryptedMessage, getLatestEvent } from "../../lib/nostr"
@@ -82,7 +81,7 @@ export const SendView = ({ keys }: SendViewProps) => {
       const { subs, relays } = await subscribe(keys, peerKey, processEvent)
       nostr.current = { subs, relays, ...keys }
       return () => {
-        nostr?.current?.subs.forEach(sub => sub.unsub())
+        nostr?.current?.subs.forEach((sub) => sub.unsub())
       }
     })()
   }, [])
@@ -117,12 +116,10 @@ export const SendView = ({ keys }: SendViewProps) => {
         />
       )}
       <div className="mx-auto max-w-[64rem] flex flex-col gap-5">
-        <Card>
-          <div className="p-4">
-            <PeerInput peerKey={peerKey} setShowScan={setShowScan} onChange={setPeerKey} />
-            {isValidPeerKey(peerKey) && <Message message={message} onChange={onMessageChange} />}
-          </div>
-        </Card>
+        <div className="p-4">
+          <PeerInput peerKey={peerKey} setShowScan={setShowScan} onChange={setPeerKey} />
+          {isValidPeerKey(peerKey) && <Message message={message} onChange={onMessageChange} />}
+        </div>
       </div>
     </div>
   )
diff --git a/tailwind.config.js b/tailwind.config.js
index f4132ae..255e7e7 100644
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -1,18 +1,19 @@
 /** @type {import('tailwindcss').Config} */
 module.exports = {
   content: [
-      "./src/pages/**/*.{js,ts,jsx,tsx}",
-      "./src/components/**/*.{js,ts,jsx,tsx}",
-      "./src/views/**/*.{js,ts,jsx,tsx}",
+    "./src/pages/**/*.{js,ts,jsx,tsx}",
+    "./src/components/**/*.{js,ts,jsx,tsx}",
+    "./src/views/**/*.{js,ts,jsx,tsx}",
   ],
+  darkMode: "class",
   theme: {
     extend: {
       colors: {
-        'custom-green-light': '#6b9370',
-        'custom-green-dark': '#4D6A51',
-        'custom-black': '#3C3744'
-      }
-    }
+        primary: "var(--primary)",
+        secondary: "var(--secondary)",
+        warning: "var(--warning)",
+      },
+    },
   },
   plugins: [],
 }