Fix club membership form in dark mode

src/app/club/page.tsx

@@ -2,12 +2,12 @@
 import { type Metadata } from 'next'
 import Image from 'next/image'
 import Link from 'next/link'
+import dynamic from "next/dynamic";
 import clsx from 'clsx'
 
 import { Container } from '@/components/Container'
 import { UserPlusIcon, GiftIcon, EnvelopeIcon, UserGroupIcon } from '@heroicons/react/24/solid'
 import interiorEmptyImage from '@/images/photos/interior-empty.jpg'
-import { ClubPayment } from './payment';
 
 function SocialLink({
   className,
@@ -43,6 +43,15 @@ export const metadata: Metadata = {
 // TODO: Replace interiorEmptyImage with a photo from a potluck
 
 export default function Club() {
+
+  // Dynamic import since ClubPayment uses `document`
+  const ClubPayment = dynamic(
+    () => {
+      return import("./payment");
+    },
+    { ssr: false }
+  );
+
   return (
     <Container className="mt-16 sm:mt-32">
       <div className="grid grid-cols-1 gap-y-16 lg:grid-cols-2 lg:grid-rows-[auto_1fr] lg:gap-y-12">

src/app/club/payment.tsx

@@ -1,6 +1,6 @@
 "use client"
 
-import React, { useEffect, useState, FormEvent } from 'react';
+import React, { useEffect, useState, FormEvent, useCallback } from 'react';
 import { AddressElement, Elements } from '@stripe/react-stripe-js';
 import { Appearance, StripeAddressElementOptions, StripeElementsOptions, loadStripe } from '@stripe/stripe-js';
 import {
@@ -166,7 +166,7 @@ function CheckoutForm({
 
         {/* Membership Type */}
         <RadioGroup value={selectedMembershipLevel} onChange={setSelectedMembershipLevel} className="space-y-3">
-          <RadioGroup.Label className="text-base font-semibold leading-6 text-gray-900">
+          <RadioGroup.Label className="text-base font-semibold leading-6 text-gray-900 dark:text-white">
             Select a membership type
           </RadioGroup.Label>
 
@@ -177,8 +177,8 @@ function CheckoutForm({
                 value={membership}
                 className={({ active }) =>
                   classNames(
-                    active ? 'border-indigo-600 ring-2 ring-indigo-600' : 'border-gray-300',
+                    active ? 'border-indigo-600 ring-2 ring-indigo-600' : 'border-gray-200 dark:border-gray-500',
-                    'relative flex cursor-pointer rounded-lg border bg-white p-4 shadow-sm focus:outline-none'
+                    'relative flex cursor-pointer rounded-lg border bg-white hover:bg-gray-50 hover:dark:bg-zinc-600 dark:bg-zinc-700 p-4 shadow-sm focus:outline-none'
                   )
                 }
               >
@@ -186,7 +186,7 @@ function CheckoutForm({
                   <>
                     <span className="flex flex-1 items-center justify-between ">
                       <span className="flex flex-col">
-                        <RadioGroup.Label as="span" className="block text-sm font-medium text-gray-900">
+                        <RadioGroup.Label as="span" className="block text-sm font-medium text-gray-900 dark:text-white">
                           {membership.title}
                         </RadioGroup.Label>
                         <RadioGroup.Description as="span" className="mt-1 flex items-center text-sm text-gray-500">
@@ -194,7 +194,7 @@ function CheckoutForm({
                         </RadioGroup.Description>
                       </span>
                       <RadioGroup.Description as="span" className="ml-8 text-sm font-medium">
-                        <span className="text-gray-900">${membership.price}</span>
+                        <span className="text-gray-900 dark:text-white">${membership.price}</span>
                         <span className="text-gray-500">/yr</span>
                       </RadioGroup.Description>
                     </span>
@@ -215,7 +215,7 @@ function CheckoutForm({
 
         {/* Additional donation */}
         <RadioGroup value={selectedAdditionalDonation} onChange={setSelectedAdditionalDonation} className="space-y-3">
-          <RadioGroup.Label className="text-base font-semibold leading-6 text-gray-900">
+          <RadioGroup.Label className="text-base font-semibold leading-6 text-gray-900 dark:text-white">
             Additional donation
           </RadioGroup.Label>
           <div className="grid grid-cols-3 gap-3 sm:grid-cols-5">
@@ -228,9 +228,9 @@ function CheckoutForm({
                     'cursor-pointer focus:outline-none',
                     option === -1 ? 'col-span-2' : '',
                     checked
-                      ? 'ring-2 ring-indigo-600 ring-offset-2'
+                      ? 'ring-2 ring-indigo-600'
-                      : 'ring-1 ring-inset ring-gray-300 bg-white text-gray-900 hover:bg-gray-50',
+                      : 'ring-1 ring-inset ring-gray-200 dark:ring-gray-500 text-gray-900 dark:text-white hover:bg-gray-50 hover:dark:bg-zinc-600',
-                    'flex items-center justify-center rounded-md py-3 px-3 text-sm font-semibold sm:flex-1'
+                    'flex items-center justify-center rounded-md py-3 px-3 text-sm font-semibold sm:flex-1 bg-white dark:bg-zinc-700'
                   )
                 }
               >
@@ -250,7 +250,7 @@ function CheckoutForm({
                           min="0"
                           step="1"
                           onChange={(e) => setCustomAmount(e.target.value)}
-                          className="block w-full rounded-md border-0 py-1.5 pl-7 pr-12 text-gray-900 ring-1 ring-inset ring-gray-300 placeholder:text-gray-400 focus:ring-1 focus:ring-inset focus:ring-gray-500 sm:text-sm sm:leading-6"
+                          className="block w-full rounded-md border-0 py-1.5 pl-7 pr-12 text-gray-900 dark:text-white dark:bg-zinc-700 ring-1 ring-inset ring-gray-200 dark:ring-gray-500 placeholder:text-gray-400 focus:ring-1 focus:ring-inset focus:ring-gray-500 sm:text-sm sm:leading-6"
                           placeholder="Custom"
                           aria-describedby="price-currency"
                         />
@@ -274,12 +274,12 @@ function CheckoutForm({
         </RadioGroup>
 
         <div className="space-y-3">
-          <h2 className="text-base font-semibold leading-6 text-gray-900">
+          <h2 className="text-base font-semibold leading-6 text-gray-900 dark:text-white">
             About you
           </h2>
 
-          <div className="rounded-md mb-3 px-3 pb-1.5 pt-2.5 shadow-sm ring-1 ring-inset ring-gray-300 focus-within:ring-2 focus-within:ring-indigo-600">
+          <div className="rounded-md mb-3 px-3 pb-1.5 pt-2.5 shadow-sm ring-1 ring-inset ring-gray-200 dark:ring-gray-500 focus-within:ring-2 focus-within:ring-indigo-600 dark:bg-zinc-700 dark:text-white">
-            <label htmlFor="name" className="block text-xs font-medium text-gray-900">
+            <label htmlFor="name" className="block text-xs font-medium text-gray-900 dark:text-zinc-400">
               Email
             </label>
             <input
@@ -288,7 +288,7 @@ function CheckoutForm({
               id="email"
               value={email}
               onChange={(e) => setEmail(e.target.value)}
-              className="block w-full border-0 p-0 text-gray-900 placeholder:text-gray-400 focus:ring-0 sm:text-sm sm:leading-6"
+              className="block w-full border-0 p-0 dark:bg-zinc-700 text-gray-900 dark:text-white placeholder:text-gray-400 focus:ring-0 sm:text-sm sm:leading-6"
               placeholder="you@example.com"
             />
           </div>
@@ -296,7 +296,7 @@ function CheckoutForm({
         </div>
 
         <div className="space-y-3">
-          <h2 className="text-base font-semibold leading-6 text-gray-900">
+          <h2 className="text-base font-semibold leading-6 text-gray-900 dark:text-white">
             Payment
           </h2>
           <div className="mt-1 text-sm text-gray-500">
@@ -329,9 +329,37 @@ function CheckoutForm({
   );
 }
 
-export function ClubPayment() {
+const DEFAULT_OPTIONS = {
+  config: { attributes: true, childList: true, subtree: true },
+};
+
+function useMutationObservable(targetEl: Node, cb: MutationCallback, options = DEFAULT_OPTIONS) {
+  const [observer, setObserver] = useState<MutationObserver | null>(null);
+
+  useEffect(() => {
+    const obs = new MutationObserver(cb);
+    setObserver(obs);
+  }, [cb, options, setObserver]);
+
+  useEffect(() => {
+    if (!observer) return;
+    const { config } = options;
+    observer.observe(targetEl, config);
+    return () => {
+      if (observer) {
+        observer.disconnect();
+      }
+    };
+  }, [observer, targetEl, options]);
+}
+
+export default function ClubPayment() {
   const [clientSecret, setClientSecret] = useState('');
   const [paymentIntent, setPaymentIntent] = useState('');
+
+  const htmlEl = document.getElementsByTagName('html')[0];
+  const darkTheme = htmlEl.classList.contains("dark");
+
   useEffect(() => {
     // Create PaymentIntent as soon as the page loads using our local API
     fetch('api/stripe_intent', {
@@ -349,15 +377,36 @@ export function ClubPayment() {
       });
   }, []);
 
+  const styles = getComputedStyle(htmlEl);
+
   const appearance: Appearance = {
     theme: 'stripe',
+    variables: {
+      colorBackground: styles.getPropertyValue('--stripe-background'),
+      colorText: styles.getPropertyValue('--stripe-foreground'),
+    },
     labels: 'floating',
   };
 
+  const cb = useCallback(
+    () => {
+      const updatedHtmlEl = document.getElementsByTagName('html')[0];
+      const updatedDarkTheme = updatedHtmlEl.classList.contains("dark");
+
+      if (updatedDarkTheme !== darkTheme) {
+        location.reload();
+      }
+    },
+    [darkTheme]
+  )
+
+  useMutationObservable(htmlEl, cb);
+
   const options: StripeElementsOptions = {
     clientSecret,
-    appearance
+    appearance,
   }
+
   return <>
     {clientSecret && (
       <Elements options={options}

src/styles/tailwind.css

@@ -2,3 +2,15 @@
 @import 'tailwindcss/components';
 @import './prism.css';
 @import 'tailwindcss/utilities';
+
+:root {
+  /* Your default theme */
+
+  --stripe-background: #FFFFFF;
+  --stripe-foreground: #000000;
+}
+
+.dark {
+  --stripe-background: #3f3f46;
+  --stripe-foreground: #E4E4E7;
+}