diff --git a/web-app/index.html b/web-app/index.html
index 7764df0..fcdbc4f 100644
--- a/web-app/index.html
+++ b/web-app/index.html
@@ -1,13 +1,13 @@
 <!doctype html>
-<html lang="en">
+<html lang="en" class="dark">
   <head>
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/vite.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Paperless GPT</title>
   </head>
-  <body>
+  <body class="bg-white dark:bg-gray-900 text-gray-800 dark:text-gray-200">
     <div id="root"></div>
     <script type="module" src="/src/main.tsx"></script>
   </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/web-app/src/DocumentProcessor.tsx b/web-app/src/DocumentProcessor.tsx
index 22b87fd..f3745e5 100644
--- a/web-app/src/DocumentProcessor.tsx
+++ b/web-app/src/DocumentProcessor.tsx
@@ -185,22 +185,20 @@ const DocumentProcessor: React.FC = () => {
 
   if (loading) {
     return (
-      <div className="flex items-center justify-center min-h-screen">
-        <div className="text-xl font-semibold">Loading documents...</div>
+      <div className="flex items-center justify-center min-h-screen bg-white dark:bg-gray-900">
+        <div className="text-xl font-semibold text-gray-800 dark:text-gray-200">Loading documents...</div>
       </div>
     );
   }
 
   return (
-    <div className="max-w-5xl mx-auto p-6">
+    <div className="max-w-5xl mx-auto p-6 bg-white dark:bg-gray-900 text-gray-800 dark:text-gray-200">
       <header className="text-center">
-        <h1 className="text-4xl font-bold mb-8 text-gray-800">
-          Paperless GPT
-        </h1>
+        <h1 className="text-4xl font-bold mb-8">Paperless GPT</h1>
       </header>
 
       {error && (
-        <div className="mb-4 p-4 bg-red-100 text-red-800 rounded">
+        <div className="mb-4 p-4 bg-red-100 dark:bg-red-900 text-red-800 dark:text-red-200 rounded">
           {error}
         </div>
       )}
@@ -246,4 +244,4 @@ const DocumentProcessor: React.FC = () => {
   );
 };
 
-export default DocumentProcessor;
+export default DocumentProcessor;
\ No newline at end of file
diff --git a/web-app/src/components/DocumentCard.tsx b/web-app/src/components/DocumentCard.tsx
index 26e0bed..bc6ec2a 100644
--- a/web-app/src/components/DocumentCard.tsx
+++ b/web-app/src/components/DocumentCard.tsx
@@ -6,9 +6,9 @@ interface DocumentCardProps {
 }
 
 const DocumentCard: React.FC<DocumentCardProps> = ({ document }) => (
-  <div className="bg-white shadow-lg shadow-blue-500/50 rounded-md p-4 relative group overflow-hidden">
-    <h3 className="text-lg font-semibold text-gray-800">{document.title}</h3>
-    <p className="text-sm text-gray-600 mt-2 truncate">
+  <div className="bg-white dark:bg-gray-800 shadow-lg shadow-blue-500/50 rounded-md p-4 relative group overflow-hidden">
+    <h3 className="text-lg font-semibold text-gray-800 dark:text-gray-200">{document.title}</h3>
+    <p className="text-sm text-gray-600 dark:text-gray-400 mt-2 truncate">
       {document.content.length > 100
         ? `${document.content.substring(0, 100)}...`
         : document.content}
@@ -17,21 +17,21 @@ const DocumentCard: React.FC<DocumentCardProps> = ({ document }) => (
       {document.tags.map((tag) => (
         <span
           key={tag}
-          className="bg-blue-100 text-blue-800 text-xs font-medium mr-2 px-2.5 py-0.5 rounded-full"
+          className="bg-blue-100 dark:bg-blue-900 text-blue-800 dark:text-blue-200 text-xs font-medium mr-2 px-2.5 py-0.5 rounded-full"
         >
           {tag}
         </span>
       ))}
     </div>
-    <div className="absolute inset-0 bg-black bg-opacity-50 opacity-0 group-hover:opacity-100 transition-opacity duration-300 flex items-center justify-center p-4 rounded-md">
-      <div className="text-sm text-white p-2 bg-gray-800 rounded-md w-full max-h-full overflow-y-auto">
+    <div className="absolute inset-0 bg-black bg-opacity-50 dark:bg-opacity-70 opacity-0 group-hover:opacity-100 transition-opacity duration-300 flex items-center justify-center p-4 rounded-md">
+      <div className="text-sm text-white p-2 bg-gray-800 dark:bg-gray-900 rounded-md w-full max-h-full overflow-y-auto">
         <h3 className="text-lg font-semibold text-white">{document.title}</h3>
         <p className="mt-2 whitespace-pre-wrap">{document.content}</p>
         <div className="mt-4">
           {document.tags.map((tag) => (
             <span
               key={tag}
-              className="bg-blue-100 text-blue-800 text-xs font-medium mr-2 px-2.5 py-0.5 rounded-full"
+              className="bg-blue-100 dark:bg-blue-900 text-blue-800 dark:text-blue-200 text-xs font-medium mr-2 px-2.5 py-0.5 rounded-full"
             >
               {tag}
             </span>
diff --git a/web-app/src/components/DocumentsToProcess.tsx b/web-app/src/components/DocumentsToProcess.tsx
index c8c030e..aec66a9 100644
--- a/web-app/src/components/DocumentsToProcess.tsx
+++ b/web-app/src/components/DocumentsToProcess.tsx
@@ -26,19 +26,19 @@ const DocumentsToProcess: React.FC<DocumentsToProcessProps> = ({
 }) => (
   <section>
     <div className="flex justify-between items-center mb-6">
-      <h2 className="text-2xl font-semibold text-gray-700">Documents to Process</h2>
+      <h2 className="text-2xl font-semibold text-gray-700 dark:text-gray-200">Documents to Process</h2>
       <div className="flex space-x-2">
         <button
           onClick={onReload}
           disabled={processing}
-          className="bg-blue-600 text-white px-4 py-2 rounded hover:bg-blue-700 focus:outline-none"
+          className="bg-blue-600 text-white dark:bg-blue-800 dark:text-gray-200 px-4 py-2 rounded hover:bg-blue-700 dark:hover:bg-blue-900 focus:outline-none"
         >
           <ArrowPathIcon className="h-5 w-5" />
         </button>
         <button
           onClick={onProcess}
           disabled={processing}
-          className="bg-blue-600 text-white px-4 py-2 rounded hover:bg-blue-700 focus:outline-none"
+          className="bg-blue-600 text-white dark:bg-blue-800 dark:text-gray-200 px-4 py-2 rounded hover:bg-blue-700 dark:hover:bg-blue-900 focus:outline-none"
         >
           {processing ? "Processing..." : "Generate Suggestions"}
         </button>
@@ -51,16 +51,18 @@ const DocumentsToProcess: React.FC<DocumentsToProcessProps> = ({
           type="checkbox"
           checked={generateTitles}
           onChange={(e) => setGenerateTitles(e.target.checked)}
+          className="dark:bg-gray-700 dark:border-gray-600"
         />
-        <span>Generate Titles</span>
+        <span className="text-gray-700 dark:text-gray-200">Generate Titles</span>
       </label>
       <label className="flex items-center space-x-2">
         <input
           type="checkbox"
           checked={generateTags}
           onChange={(e) => setGenerateTags(e.target.checked)}
+          className="dark:bg-gray-700 dark:border-gray-600"
         />
-        <span>Generate Tags</span>
+        <span className="text-gray-700 dark:text-gray-200">Generate Tags</span>
       </label>
     </div>
 
diff --git a/web-app/src/components/NoDocuments.tsx b/web-app/src/components/NoDocuments.tsx
index 9a58c20..2c94b51 100644
--- a/web-app/src/components/NoDocuments.tsx
+++ b/web-app/src/components/NoDocuments.tsx
@@ -12,11 +12,11 @@ const NoDocuments: React.FC<NoDocumentsProps> = ({
   onReload,
   processing,
 }) => (
-  <div className="flex flex-col items-center justify-center min-h-screen">
+  <div className="flex flex-col items-center justify-center min-h-screen bg-white dark:bg-gray-900 text-gray-800 dark:text-gray-200">
     <p className="text-xl font-semibold mb-4">
       No documents found with filter tag{" "}
       {filterTag && (
-        <span className="bg-blue-100 text-blue-800 text-sm font-medium px-2.5 py-0.5 rounded-full">
+        <span className="bg-blue-100 dark:bg-blue-900 text-blue-800 dark:text-blue-200 text-sm font-medium px-2.5 py-0.5 rounded-full">
           {filterTag}
         </span>
       )}
@@ -25,7 +25,7 @@ const NoDocuments: React.FC<NoDocumentsProps> = ({
     <button
       onClick={onReload}
       disabled={processing}
-      className="flex items-center bg-blue-600 text-white px-4 py-2 rounded hover:bg-blue-700 focus:outline-none"
+      className="flex items-center bg-blue-600 dark:bg-blue-800 text-white dark:text-gray-200 px-4 py-2 rounded hover:bg-blue-700 dark:hover:bg-blue-900 focus:outline-none"
     >
       Reload
       <ArrowPathIcon className="h-5 w-5 ml-2" />
diff --git a/web-app/src/components/SuccessModal.tsx b/web-app/src/components/SuccessModal.tsx
index 4751f4d..e06ce25 100644
--- a/web-app/src/components/SuccessModal.tsx
+++ b/web-app/src/components/SuccessModal.tsx
@@ -1,6 +1,6 @@
-import React, { Fragment } from "react";
 import { Dialog, DialogTitle, Transition } from "@headlessui/react";
 import { CheckCircleIcon } from "@heroicons/react/24/outline";
+import React, { Fragment } from "react";
 
 interface SuccessModalProps {
   isOpen: boolean;
@@ -25,7 +25,7 @@ const SuccessModal: React.FC<SuccessModalProps> = ({ isOpen, onClose }) => (
           leaveFrom="opacity-100"
           leaveTo="opacity-0"
         >
-          <div className="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" />
+          <div className="fixed inset-0 bg-gray-500 dark:bg-gray-800 bg-opacity-75 transition-opacity" />
         </Transition.Child>
 
         <span
@@ -44,25 +44,24 @@ const SuccessModal: React.FC<SuccessModalProps> = ({ isOpen, onClose }) => (
           leaveFrom="opacity-100 translate-y-0 sm:scale-100"
           leaveTo="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95"
         >
-          <div className="inline-block align-bottom bg-white rounded-lg px-6 pt-5 pb-4 text-left overflow-hidden shadow-xl transform transition-all sm:align-middle sm:max-w-lg sm:w-full sm:p-6">
+          <div className="inline-block align-bottom bg-white dark:bg-gray-900 rounded-lg px-6 pt-5 pb-4 text-left overflow-hidden shadow-xl transform transition-all sm:align-middle sm:max-w-lg sm:w-full sm:p-6">
             <div className="sm:flex sm:items-start">
-              <div className="mx-auto flex items-center justify-center h-12 w-12 rounded-full bg-green-100 sm:mx-0 sm:h-12 sm:w-12">
+              <div className="mx-auto flex items-center justify-center h-12 w-12 rounded-full bg-green-100 dark:bg-green-900 sm:mx-0 sm:h-12 sm:w-12">
                 <CheckCircleIcon
-                  className="h-6 w-6 text-green-600"
+                  className="h-6 w-6 text-green-600 dark:text-green-400"
                   aria-hidden="true"
                 />
               </div>
               <div className="mt-3 text-center sm:mt-0 sm:ml-4 sm:text-left">
                 <DialogTitle
                   as="h3"
-                  className="text-lg leading-6 font-medium text-gray-900"
+                  className="text-lg leading-6 font-medium text-gray-900 dark:text-gray-200"
                 >
                   Documents Updated
                 </DialogTitle>
                 <div className="mt-2">
-                  <p className="text-sm text-gray-500">
-                    The documents have been successfully updated with the
-                    new titles and tags.
+                  <p className="text-sm text-gray-500 dark:text-gray-400">
+                    The documents have been successfully updated with the new titles and tags.
                   </p>
                 </div>
               </div>
@@ -70,7 +69,7 @@ const SuccessModal: React.FC<SuccessModalProps> = ({ isOpen, onClose }) => (
             <div className="mt-5 sm:mt-4 sm:flex sm:flex-row-reverse">
               <button
                 onClick={onClose}
-                className="w-full inline-flex justify-center rounded-md border border-transparent shadow-sm px-4 py-2 bg-green-600 text-base font-medium text-white hover:bg-green-700 focus:outline-none sm:ml-3 sm:w-auto sm:text-sm"
+                className="w-full inline-flex justify-center rounded-md border border-transparent shadow-sm px-4 py-2 bg-green-600 dark:bg-green-700 text-base font-medium text-white hover:bg-green-700 dark:hover:bg-green-800 focus:outline-none sm:ml-3 sm:w-auto sm:text-sm"
               >
                 OK
               </button>
diff --git a/web-app/src/components/SuggestionCard.tsx b/web-app/src/components/SuggestionCard.tsx
index 5507a4c..25da077 100644
--- a/web-app/src/components/SuggestionCard.tsx
+++ b/web-app/src/components/SuggestionCard.tsx
@@ -19,13 +19,13 @@ const SuggestionCard: React.FC<SuggestionCardProps> = ({
 }) => {
   const document = suggestion.original_document;
   return (
-    <div className="bg-white shadow-lg shadow-blue-500/50 rounded-md p-4 relative flex flex-col justify-between h-full">
+    <div className="bg-white dark:bg-gray-800 shadow-lg shadow-blue-500/50 rounded-md p-4 relative flex flex-col justify-between h-full">
       <div className="flex items-center group relative">
         <div className="relative">
-          <h3 className="text-lg font-semibold text-gray-800">
+          <h3 className="text-lg font-semibold text-gray-800 dark:text-gray-200">
             {document.title}
           </h3>
-          <p className="text-sm text-gray-600 mt-2 truncate">
+          <p className="text-sm text-gray-600 dark:text-gray-400 mt-2 truncate">
             {document.content.length > 40
               ? `${document.content.substring(0, 40)}...`
               : document.content}
@@ -34,15 +34,15 @@ const SuggestionCard: React.FC<SuggestionCardProps> = ({
             {document.tags.map((tag) => (
               <span
                 key={tag}
-                className="bg-blue-100 text-blue-800 text-xs font-medium mr-2 px-2.5 py-0.5 rounded-full"
+                className="bg-blue-100 dark:bg-blue-900 text-blue-800 dark:text-blue-200 text-xs font-medium mr-2 px-2.5 py-0.5 rounded-full"
               >
                 {tag}
               </span>
             ))}
           </div>
         </div>
-        <div className="absolute inset-0 bg-black bg-opacity-50 opacity-0 group-hover:opacity-100 transition-opacity duration-300 flex items-center justify-center p-4 rounded-md">
-          <div className="text-sm text-white p-2 bg-gray-800 rounded-md w-full max-h-full overflow-y-auto">
+        <div className="absolute inset-0 bg-black bg-opacity-50 dark:bg-opacity-70 opacity-0 group-hover:opacity-100 transition-opacity duration-300 flex items-center justify-center p-4 rounded-md">
+          <div className="text-sm text-white p-2 bg-gray-800 dark:bg-gray-900 rounded-md w-full max-h-full overflow-y-auto">
             <p className="mt-2 whitespace-pre-wrap">{document.content}</p>
           </div>
         </div>
@@ -52,7 +52,7 @@ const SuggestionCard: React.FC<SuggestionCardProps> = ({
           type="text"
           value={suggestion.suggested_title || ""}
           onChange={(e) => onTitleChange(suggestion.id, e.target.value)}
-          className="w-full border border-gray-300 rounded px-2 py-1 mt-2 focus:outline-none focus:ring-2 focus:ring-blue-500"
+          className="w-full border border-gray-300 dark:border-gray-600 rounded px-2 py-1 mt-2 focus:outline-none focus:ring-2 focus:ring-blue-500 dark:bg-gray-700 dark:text-gray-200"
         />
         <div className="mt-4">
           <ReactTags
@@ -79,6 +79,23 @@ const SuggestionCard: React.FC<SuggestionCardProps> = ({
             onDelete={(index) => onTagDeletion(suggestion.id, index)}
             allowNew={true}
             placeholderText="Add a tag"
+            classNames={{
+              root: "react-tags dark:bg-gray-800",
+              rootIsActive: "is-active",
+              rootIsDisabled: "is-disabled",
+              rootIsInvalid: "is-invalid",
+              label: "react-tags__label",
+              tagList: "react-tags__list",
+              tagListItem: "react-tags__list-item",
+              tag: "react-tags__tag dark:bg-blue-900 dark:text-blue-200",
+              tagName: "react-tags__tag-name",
+              comboBox: "react-tags__combobox dark:bg-gray-700 dark:text-gray-200",
+              input: "react-tags__combobox-input dark:bg-gray-700 dark:text-gray-200",
+              listBox: "react-tags__listbox dark:bg-gray-700 dark:text-gray-200",
+              option: "react-tags__listbox-option dark:bg-gray-700 dark:text-gray-200 hover:bg-blue-500 dark:hover:bg-blue-800",
+              optionIsActive: "is-active",
+              highlight: "react-tags__highlight dark:bg-gray-800",
+            }}
           />
         </div>
       </div>
diff --git a/web-app/src/components/SuggestionsReview.tsx b/web-app/src/components/SuggestionsReview.tsx
index cf7a2e1..3a1f648 100644
--- a/web-app/src/components/SuggestionsReview.tsx
+++ b/web-app/src/components/SuggestionsReview.tsx
@@ -24,7 +24,7 @@ const SuggestionsReview: React.FC<SuggestionsReviewProps> = ({
   updating,
 }) => (
   <section>
-    <h2 className="text-2xl font-semibold text-gray-700 mb-6">
+    <h2 className="text-2xl font-semibold text-gray-700 dark:text-gray-200 mb-6">
       Review and Edit Suggested Titles
     </h2>
     <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
@@ -42,7 +42,7 @@ const SuggestionsReview: React.FC<SuggestionsReviewProps> = ({
     <div className="flex justify-end space-x-4 mt-6">
       <button
         onClick={onBack}
-        className="bg-gray-200 text-gray-700 px-4 py-2 rounded hover:bg-gray-300 focus:outline-none"
+        className="bg-gray-200 dark:bg-gray-700 text-gray-700 dark:text-gray-200 px-4 py-2 rounded hover:bg-gray-300 dark:hover:bg-gray-600 focus:outline-none"
       >
         Back
       </button>
@@ -51,8 +51,8 @@ const SuggestionsReview: React.FC<SuggestionsReviewProps> = ({
         disabled={updating}
         className={`${
           updating
-            ? "bg-green-400 cursor-not-allowed"
-            : "bg-green-600 hover:bg-green-700"
+            ? "bg-green-400 dark:bg-green-600 cursor-not-allowed"
+            : "bg-green-600 dark:bg-green-700 hover:bg-green-700 dark:hover:bg-green-800"
         } text-white px-4 py-2 rounded focus:outline-none`}
       >
         {updating ? "Updating..." : "Apply Suggestions"}
