feat: add duplicate detection modes and UI enhancements for managing duplicates

webapp/src/components/VaultPage.tsx

@@ -17,13 +17,14 @@ import {
   createEmptyDraft,
   creationTimeValue,
   draftFromCipher,
-  buildCipherDuplicateSignature,
+  buildCipherDuplicateSignatures,
   firstCipherUri,
   firstPasskeyCreationTime,
   isCipherVisibleInArchive,
   isCipherVisibleInNormalVault,
   isCipherVisibleInTrash,
   sortTimeValue,
+  type DuplicateDetectionMode,
   type SidebarFilter,
   type VaultSortMode,
 } from '@/components/vault/vault-page-helpers';
@@ -79,6 +80,7 @@ export default function VaultPage(props: VaultPageProps) {
   const [sortMenuOpen, setSortMenuOpen] = useState(false);
   const [folderSortMode, setFolderSortMode] = useState<VaultSortMode>('name');
   const [folderSortMenuOpen, setFolderSortMenuOpen] = useState(false);
+  const [duplicateMode, setDuplicateMode] = useState<DuplicateDetectionMode>('exact');
   const [sidebarFilter, setSidebarFilter] = useState<SidebarFilter>({ kind: 'all' });
   const [selectedCipherId, setSelectedCipherId] = useState('');
   const [selectedMap, setSelectedMap] = useState<Record<string, boolean>>({});
@@ -338,16 +340,41 @@ export default function VaultPage(props: VaultPageProps) {
 
   const duplicateSignatureInfo = useMemo(() => {
     if (sidebarFilter.kind !== 'duplicates') return null;
-    const byId = new Map<string, string>();
+    const byId = new Map<string, string[]>();
     const counts = new Map<string, number>();
     for (const cipher of props.ciphers) {
       if (!isCipherVisibleInNormalVault(cipher)) continue;
-      const signature = buildCipherDuplicateSignature(cipher);
+      const signatures = Array.from(new Set(buildCipherDuplicateSignatures(cipher, duplicateMode)));
-      byId.set(cipher.id, signature);
+      byId.set(cipher.id, signatures);
+      for (const signature of signatures) {
         counts.set(signature, (counts.get(signature) || 0) + 1);
       }
+    }
     return { byId, counts };
-  }, [props.ciphers, sidebarFilter.kind]);
+  }, [props.ciphers, sidebarFilter.kind, duplicateMode]);
+
+  const duplicateGroupIndexById = useMemo(() => {
+    if (!duplicateSignatureInfo) return new Map<string, number>();
+    const groupKeyById = new Map<string, string>();
+    const groupKeys = new Set<string>();
+    for (const cipher of props.ciphers) {
+      const groupKey = (duplicateSignatureInfo.byId.get(cipher.id) || [])
+        .filter((signature) => (duplicateSignatureInfo.counts.get(signature) || 0) >= 2)
+        .sort()[0];
+      if (!groupKey) continue;
+      groupKeyById.set(cipher.id, groupKey);
+      groupKeys.add(groupKey);
+    }
+    const groupIndexByKey = new Map<string, number>();
+    Array.from(groupKeys).sort().forEach((groupKey, index) => {
+      groupIndexByKey.set(groupKey, index % 64);
+    });
+    const byId = new Map<string, number>();
+    for (const [cipherId, groupKey] of groupKeyById.entries()) {
+      byId.set(cipherId, groupIndexByKey.get(groupKey) || 0);
+    }
+    return byId;
+  }, [props.ciphers, duplicateSignatureInfo]);
 
   const filteredCiphers = useMemo(() => {
     const next = props.ciphers.filter((cipher) => {
@@ -358,9 +385,12 @@ export default function VaultPage(props: VaultPageProps) {
         if (!isCipherVisibleInArchive(cipher)) return false;
       } else {
         if (!isCipherVisibleInNormalVault(cipher)) return false;
-        if (sidebarFilter.kind === 'duplicates' && ((duplicateSignatureInfo?.counts.get(duplicateSignatureInfo.byId.get(cipher.id) || '') || 0) < 2)) {
+        if (sidebarFilter.kind === 'duplicates') {
+          const signatures = duplicateSignatureInfo?.byId.get(cipher.id) || [];
+          if (!signatures.some((signature) => (duplicateSignatureInfo?.counts.get(signature) || 0) >= 2)) {
             return false;
           }
+        }
         if (sidebarFilter.kind === 'favorite' && !cipher.favorite) return false;
         if (sidebarFilter.kind === 'type' && meta?.typeKey !== sidebarFilter.value) return false;
         if (sidebarFilter.kind === 'folder') {
@@ -404,8 +434,9 @@ export default function VaultPage(props: VaultPageProps) {
   const sidebarFilterKey = useMemo(() => {
     if (sidebarFilter.kind === 'folder') return `folder:${sidebarFilter.folderId ?? 'none'}`;
     if (sidebarFilter.kind === 'type') return `type:${sidebarFilter.value}`;
+    if (sidebarFilter.kind === 'duplicates') return `duplicates:${duplicateMode}`;
     return sidebarFilter.kind;
-  }, [sidebarFilter]);
+  }, [sidebarFilter, duplicateMode]);
 
   useEffect(() => {
     setListScrollTop(0);
@@ -419,6 +450,10 @@ export default function VaultPage(props: VaultPageProps) {
     }
   }, [sidebarFilter.kind, sortMode]);
 
+  useEffect(() => {
+    if (sidebarFilter.kind === 'duplicates') setSelectedMap({});
+  }, [sidebarFilter.kind, duplicateMode]);
+
   useEffect(() => {
     if (isCreating) return;
     if (!filteredCiphers.length) {
@@ -984,10 +1019,11 @@ const folderName = useCallback((id: string | null | undefined): string => {
   const handleSyncVault = useCallback(() => { void syncVault(); }, [props.onRefresh]);
   const handleOpenBulkDelete = useCallback(() => setBulkDeleteOpen(true), []);
   const handleSelectDuplicates = useCallback(() => {
+    if (duplicateMode !== 'exact') return;
     const map: Record<string, boolean> = {};
     const seen = new Set<string>();
     for (const cipher of filteredCiphers) {
-      const signature = duplicateSignatureInfo?.byId.get(cipher.id) || buildCipherDuplicateSignature(cipher);
+      const signature = duplicateSignatureInfo?.byId.get(cipher.id)?.[0] || buildCipherDuplicateSignatures(cipher, 'exact')[0];
       if (seen.has(signature)) {
         map[cipher.id] = true;
         continue;
@@ -995,7 +1031,7 @@ const folderName = useCallback((id: string | null | undefined): string => {
       seen.add(signature);
     }
     setSelectedMap(map);
-  }, [filteredCiphers, duplicateSignatureInfo]);
+  }, [filteredCiphers, duplicateSignatureInfo, duplicateMode]);
   const handleSelectAll = useCallback(() => {
     const map: Record<string, boolean> = {};
     for (const cipher of filteredCiphers) map[cipher.id] = true;
@@ -1082,10 +1118,12 @@ const folderName = useCallback((id: string | null | undefined): string => {
           searchInput={searchInput}
           sortMode={sortMode}
           sortMenuOpen={sortMenuOpen}
+          duplicateMode={duplicateMode}
           selectedCount={selectedCount}
           totalCipherCount={totalCipherCount}
           filteredCiphers={filteredCiphers}
           visibleCiphers={visibleCiphers}
+          duplicateGroupIndexById={duplicateGroupIndexById}
           virtualRange={virtualRange}
           selectedCipherId={selectedCipherId}
           selectedMap={selectedMap}
@@ -1102,6 +1140,7 @@ const folderName = useCallback((id: string | null | undefined): string => {
           onSearchCompositionEnd={handleSearchCompositionEnd}
           onToggleSortMenu={handleToggleSortMenu}
           onSelectSortMode={handleSelectSortMode}
+          onDuplicateModeChange={setDuplicateMode}
           onSyncVault={handleSyncVault}
           onOpenBulkDelete={handleOpenBulkDelete}
           onSelectDuplicates={handleSelectDuplicates}

webapp/src/components/vault/VaultListPanel.tsx

@@ -8,8 +8,10 @@ import { t } from '@/lib/i18n';
 import {
   CreateTypeIcon,
   getCreateTypeOptions,
+  getDuplicateDetectionOptions,
   getVaultSortOptions,
   VaultListIcon,
+  type DuplicateDetectionMode,
   type SidebarFilter,
   type VaultSortMode,
 } from '@/components/vault/vault-page-helpers';
@@ -28,10 +30,12 @@ interface VaultListPanelProps {
   searchInput: string;
   sortMode: VaultSortMode;
   sortMenuOpen: boolean;
+  duplicateMode: DuplicateDetectionMode;
   selectedCount: number;
   totalCipherCount: number;
   filteredCiphers: Cipher[];
   visibleCiphers: Cipher[];
+  duplicateGroupIndexById: Map<string, number>;
   virtualRange: VirtualRange;
   selectedCipherId: string;
   selectedMap: Record<string, boolean>;
@@ -48,6 +52,7 @@ interface VaultListPanelProps {
   onSearchCompositionEnd: (value: string) => void;
   onToggleSortMenu: () => void;
   onSelectSortMode: (value: VaultSortMode) => void;
+  onDuplicateModeChange: (value: DuplicateDetectionMode) => void;
   onSyncVault: () => void;
   onOpenBulkDelete: () => void;
   onSelectDuplicates: () => void;
@@ -69,15 +74,18 @@ interface CipherListItemProps {
   cipher: Cipher;
   selected: boolean;
   checked: boolean;
+  duplicateGroupIndex: number | null;
   subtitle: string;
   onToggleSelected: (cipherId: string, checked: boolean) => void;
   onSelectCipher: (cipherId: string) => void;
 }
 
 const CipherListItem = memo(function CipherListItem(props: CipherListItemProps) {
+  const duplicateGroupHue = props.duplicateGroupIndex === null ? null : (props.duplicateGroupIndex * 137.508) % 360;
   return (
     <div
-      className={`list-item ${props.selected ? 'active' : ''}`}
+      className={`list-item ${props.selected ? 'active' : ''} ${duplicateGroupHue === null ? '' : 'duplicate-group-item'}`}
+      style={duplicateGroupHue === null ? undefined : { '--duplicate-group-hue': `${duplicateGroupHue}deg` }}
       onClick={(event) => {
         const target = event.target as HTMLElement;
         if (target.closest('.row-check')) return;
@@ -108,6 +116,7 @@ const CipherListItem = memo(function CipherListItem(props: CipherListItemProps)
 
 export default function VaultListPanel(props: VaultListPanelProps) {
   const createTypeOptions = getCreateTypeOptions();
+  const duplicateDetectionOptions = getDuplicateDetectionOptions();
   const vaultSortOptions = getVaultSortOptions();
   const createMenu = (
     <div className="create-menu-wrap mobile-fab-wrap" ref={props.createMenuRef}>
@@ -137,6 +146,19 @@ export default function VaultListPanel(props: VaultListPanelProps) {
     <section className="list-col">
       <div className="list-head">
         <div className="search-input-wrap">
+          {props.sidebarFilter.kind === 'duplicates' && props.isMobileLayout ? (
+            <select
+              className="input duplicate-mode-select duplicate-mode-head-select"
+              value={props.duplicateMode}
+              aria-label={t('txt_duplicate_detection_mode')}
+              onChange={(event) => props.onDuplicateModeChange((event.currentTarget as HTMLSelectElement).value as DuplicateDetectionMode)}
+            >
+              {duplicateDetectionOptions.map((option) => (
+                <option key={option.value} value={option.value}>{option.label}</option>
+              ))}
+            </select>
+          ) : (
+            <>
               <input
                 className="search-input"
                 placeholder={t('txt_search_your_secure_vault')}
@@ -161,6 +183,8 @@ export default function VaultListPanel(props: VaultListPanelProps) {
                   <X size={14} />
                 </button>
               )}
+            </>
+          )}
         </div>
         <div className="sort-menu-wrap" ref={props.sortMenuRef}>
           <button
@@ -195,8 +219,20 @@ export default function VaultListPanel(props: VaultListPanelProps) {
           <RefreshCw size={14} className="btn-icon" /> {t('txt_sync_vault')}
         </button>
       </div>
-      <div className="toolbar actions">
+      <div className={`toolbar actions ${props.sidebarFilter.kind === 'duplicates' ? 'duplicates-toolbar' : ''}`}>
-        {props.sidebarFilter.kind === 'duplicates' && (
+        {props.sidebarFilter.kind === 'duplicates' && !props.isMobileLayout && (
+          <select
+            className="input duplicate-mode-select duplicate-mode-toolbar-select"
+            value={props.duplicateMode}
+            aria-label={t('txt_duplicate_detection_mode')}
+            onChange={(event) => props.onDuplicateModeChange((event.currentTarget as HTMLSelectElement).value as DuplicateDetectionMode)}
+          >
+            {duplicateDetectionOptions.map((option) => (
+              <option key={option.value} value={option.value}>{option.label}</option>
+            ))}
+          </select>
+        )}
+        {props.sidebarFilter.kind === 'duplicates' && props.duplicateMode === 'exact' && (
           <button type="button" className="btn btn-secondary small" disabled={!props.filteredCiphers.length || props.busy} onClick={props.onSelectDuplicates}>
             <Check size={14} className="btn-icon" /> {t('txt_select_duplicate_items')}
           </button>
@@ -229,12 +265,16 @@ export default function VaultListPanel(props: VaultListPanelProps) {
         <button type="button" className="btn btn-danger small" disabled={!props.selectedCount || props.busy} onClick={props.onOpenBulkDelete}>
           <Trash2 size={14} className="btn-icon" /> {props.sidebarFilter.kind === 'trash' ? t('txt_delete_permanently') : t('txt_delete_selected')}
         </button>
+        {props.sidebarFilter.kind !== 'duplicates' && (
           <button type="button" className="btn btn-secondary small" disabled={!props.filteredCiphers.length} onClick={props.onSelectAll}>
             <CheckCheck size={14} className="btn-icon" /> {t('txt_select_all')}
           </button>
-        {props.isMobileLayout && typeof document !== 'undefined'
+        )}
+        {props.sidebarFilter.kind !== 'duplicates' && (
+          props.isMobileLayout && typeof document !== 'undefined'
             ? props.mobileFabVisible ? createPortal(createMenu, document.body) : null
-          : createMenu}
+            : createMenu
+        )}
       </div>
 
       <div className="list-panel" ref={props.listPanelRef} onScroll={(event) => props.onScroll((event.currentTarget as HTMLDivElement).scrollTop)}>
@@ -255,6 +295,7 @@ export default function VaultListPanel(props: VaultListPanelProps) {
                 cipher={cipher}
                 selected={props.selectedCipherId === cipher.id}
                 checked={!!props.selectedMap[cipher.id]}
+                duplicateGroupIndex={props.sidebarFilter.kind === 'duplicates' ? props.duplicateGroupIndexById.get(cipher.id) ?? null : null}
                 subtitle={props.listSubtitle(cipher)}
                 onToggleSelected={props.onToggleSelected}
                 onSelectCipher={props.onSelectCipher}

webapp/src/components/vault/vault-page-helpers.tsx

@@ -10,10 +10,13 @@ import {
 import { copyTextToClipboard } from '@/lib/clipboard';
 import { t } from '@/lib/i18n';
 import type { Cipher, CipherAttachment, CustomFieldType, VaultDraft, VaultDraftField, VaultDraftLoginUri } from '@/lib/types';
+import { firstCipherUri, hostFromUri, websiteIconUrl } from '@/lib/website-utils';
+import { normalizeEquivalentDomain } from '@shared/domain-normalize';
 import WebsiteIcon from './WebsiteIcon';
 
 export type TypeFilter = 'login' | 'card' | 'identity' | 'note' | 'ssh';
 export type VaultSortMode = 'edited' | 'created' | 'name';
+export type DuplicateDetectionMode = 'exact' | 'login-site' | 'login-credentials' | 'password';
 export type SidebarFilter =
   | { kind: 'all' }
   | { kind: 'favorite' }
@@ -126,6 +129,16 @@ export const FOLDER_SORT_STORAGE_KEY = 'nodewarden.folder-sort.v1';
 export const MOBILE_LAYOUT_QUERY = '(max-width: 1180px)';
 export const VAULT_LIST_ROW_HEIGHT = 74;
 export const VAULT_LIST_OVERSCAN = 10;
+
+export function getDuplicateDetectionOptions(): Array<{ value: DuplicateDetectionMode; label: string }> {
+  return [
+    { value: 'exact', label: t('txt_duplicate_mode_exact') },
+    { value: 'login-site', label: t('txt_duplicate_mode_login_site') },
+    { value: 'login-credentials', label: t('txt_duplicate_mode_login_credentials') },
+    { value: 'password', label: t('txt_duplicate_mode_password') },
+  ];
+}
+
 export function getVaultSortOptions(): Array<{ value: VaultSortMode; label: string }> {
   return [
     { value: 'edited', label: t('txt_sort_last_edited') },
@@ -242,7 +255,7 @@ export function toBooleanFieldValue(raw: string): boolean {
   return v === '1' || v === 'true' || v === 'yes' || v === 'on';
 }
 
-export { firstCipherUri, hostFromUri, websiteIconUrl } from '@/lib/website-utils';
+export { firstCipherUri, hostFromUri, websiteIconUrl };
 
 export function createEmptyLoginUri(): VaultDraftLoginUri {
   return { uri: '', match: null, originalUri: '', extra: {} };
@@ -257,6 +270,30 @@ function valueOrFallback(value: string | null | undefined): string {
   return String(value || '');
 }
 
+function duplicateLoginUsername(cipher: Cipher): string {
+  return valueOrFallback(cipher.login?.decUsername ?? cipher.login?.username).trim().toLowerCase();
+}
+
+function duplicateLoginPassword(cipher: Cipher): string {
+  return valueOrFallback(cipher.login?.decPassword ?? cipher.login?.password);
+}
+
+function duplicateLoginSites(cipher: Cipher): string[] {
+  const sites = new Set<string>();
+  for (const uri of cipher.login?.uris || []) {
+    const raw = valueOrFallback(uri.decUri ?? uri.uri).trim();
+    if (!raw) continue;
+    const host = hostFromUri(raw).trim().toLowerCase().replace(/^www\./, '');
+    const site = normalizeEquivalentDomain(raw) || host;
+    if (site) sites.add(site);
+  }
+  return Array.from(sites).sort();
+}
+
+function duplicateSignature(parts: string[]): string {
+  return JSON.stringify(parts);
+}
+
 export function buildCipherDuplicateSignature(cipher: Cipher): string {
   const normalized = {
     type: Number(cipher.type || 1),
@@ -333,6 +370,23 @@ export function buildCipherDuplicateSignature(cipher: Cipher): string {
   return JSON.stringify(normalized);
 }
 
+export function buildCipherDuplicateSignatures(cipher: Cipher, mode: DuplicateDetectionMode): string[] {
+  if (mode === 'exact') return [buildCipherDuplicateSignature(cipher)];
+  if (Number(cipher.type || 1) !== 1 || !cipher.login) return [];
+
+  const username = duplicateLoginUsername(cipher);
+  const password = duplicateLoginPassword(cipher);
+  if (mode === 'password') {
+    return password ? [duplicateSignature(['password', password])] : [];
+  }
+  if (!username || !password) return [];
+  if (mode === 'login-credentials') {
+    return [duplicateSignature(['login-credentials', username, password])];
+  }
+
+  return duplicateLoginSites(cipher).map((site) => duplicateSignature(['login-site', site, username, password]));
+}
+
 export function createEmptyDraft(type: number): VaultDraft {
   return {
     type,

webapp/src/lib/i18n/locales/en.ts

@@ -450,6 +450,11 @@ const en: Record<string, string> = {
   "txt_favorite": "Favorite",
   "txt_favorites": "Favorites",
   "txt_duplicates": "Duplicates",
+  "txt_duplicate_detection_mode": "Match by",
+  "txt_duplicate_mode_exact": "Exact item",
+  "txt_duplicate_mode_login_site": "Site + username + password",
+  "txt_duplicate_mode_login_credentials": "Username + password",
+  "txt_duplicate_mode_password": "Reused password",
   "txt_field": "Field",
   "txt_field_label": "Field Label",
   "txt_field_label_is_required": "Field label is required.",

webapp/src/lib/i18n/locales/es.ts

@@ -450,6 +450,11 @@ const es: Record<string, string> = {
   "txt_favorite": "Favorito",
   "txt_favorites": "Favoritos",
   "txt_duplicates": "Duplicados",
+  "txt_duplicate_detection_mode": "Coincidir por",
+  "txt_duplicate_mode_exact": "Elemento exacto",
+  "txt_duplicate_mode_login_site": "Sitio + usuario + contraseña",
+  "txt_duplicate_mode_login_credentials": "Usuario + contraseña",
+  "txt_duplicate_mode_password": "Contraseña reutilizada",
   "txt_field": "Campo",
   "txt_field_label": "Etiqueta del campo",
   "txt_field_label_is_required": "La etiqueta del campo es obligatoria.",

webapp/src/lib/i18n/locales/ru.ts

@@ -450,6 +450,11 @@ const ru: Record<string, string> = {
   "txt_favorite": "Любимый",
   "txt_favorites": "Избранное",
   "txt_duplicates": "Дубликаты",
+  "txt_duplicate_detection_mode": "Сравнивать по",
+  "txt_duplicate_mode_exact": "Полное совпадение",
+  "txt_duplicate_mode_login_site": "Сайт + логин + пароль",
+  "txt_duplicate_mode_login_credentials": "Логин + пароль",
+  "txt_duplicate_mode_password": "Повтор пароля",
   "txt_field": "Поле",
   "txt_field_label": "Метка поля",
   "txt_field_label_is_required": "Метка поля обязательна.",

webapp/src/lib/i18n/locales/zh-CN.ts

@@ -450,6 +450,11 @@ const zhCN: Record<string, string> = {
   "txt_favorite": "收藏",
   "txt_favorites": "收藏",
   "txt_duplicates": "重复项",
+  "txt_duplicate_detection_mode": "匹配方式",
+  "txt_duplicate_mode_exact": "完全相同",
+  "txt_duplicate_mode_login_site": "网站+账号+密码",
+  "txt_duplicate_mode_login_credentials": "账号+密码",
+  "txt_duplicate_mode_password": "密码复用",
   "txt_field": "字段",
   "txt_field_label": "字段标签",
   "txt_field_label_is_required": "字段标签不能为空",

webapp/src/lib/i18n/locales/zh-TW.ts

@@ -450,6 +450,11 @@ const zhTW: Record<string, string> = {
   "txt_favorite": "收藏",
   "txt_favorites": "收藏",
   "txt_duplicates": "重複項",
+  "txt_duplicate_detection_mode": "匹配方式",
+  "txt_duplicate_mode_exact": "完全相同",
+  "txt_duplicate_mode_login_site": "網站+帳號+密碼",
+  "txt_duplicate_mode_login_credentials": "帳號+密碼",
+  "txt_duplicate_mode_password": "密碼重複使用",
   "txt_field": "字段",
   "txt_field_label": "字段標籤",
   "txt_field_label_is_required": "字段標籤不能為空",

webapp/src/styles/dark.css

@@ -200,6 +200,21 @@
   box-shadow: 0 10px 28px rgba(0, 0, 0, 0.24), 0 0 0 1px rgba(139, 184, 255, 0.12);
 }
 
+:root[data-theme='dark'] .list-item.duplicate-group-item {
+  background: hsl(var(--duplicate-group-hue) 34% 18%);
+  border-color: hsl(var(--duplicate-group-hue) 28% 30%);
+}
+
+:root[data-theme='dark'] .list-item.duplicate-group-item:hover {
+  background: hsl(var(--duplicate-group-hue) 36% 21%);
+  border-color: hsl(var(--duplicate-group-hue) 34% 38%);
+}
+
+:root[data-theme='dark'] .list-item.duplicate-group-item.active {
+  background: hsl(var(--duplicate-group-hue) 38% 24%);
+  border-color: hsl(var(--duplicate-group-hue) 42% 48%);
+}
+
 :root[data-theme='dark'] .card-brand-icon {
   color: #bfdbfe;
   background: linear-gradient(180deg, #1f2937 0%, #111827 100%);

webapp/src/styles/responsive.css

@@ -319,6 +319,10 @@
     @apply h-[42px] w-full min-w-0 rounded-[14px];
   }
 
+  .list-head .duplicate-mode-head-select {
+    @apply h-[34px] min-w-0 w-auto max-w-full rounded-full;
+  }
+
   .list-icon-btn {
     @apply w-auto min-w-0 gap-1.5 whitespace-nowrap px-3 py-0 text-[13px];
   }
@@ -329,6 +333,11 @@
     gap: var(--actions-gap);
   }
 
+  .toolbar.actions.duplicates-toolbar {
+    @apply justify-start;
+    flex-wrap: wrap;
+  }
+
   .actions {
     gap: var(--actions-gap);
   }

webapp/src/styles/vault.css

@@ -184,8 +184,45 @@
   gap: var(--actions-gap);
 }
 
+.toolbar.actions.duplicates-toolbar {
+  @apply items-center;
+}
+
 .toolbar .btn.small {
-  @apply h-[30px] rounded-full text-xs;
+  @apply h-[32px] rounded-full text-xs;
+}
+
+.duplicate-mode-select {
+  @apply h-8 min-w-[150px] rounded-full py-0 pl-3 pr-6 text-xs;
+  border-color: rgba(74, 103, 150, 0.26);
+  box-shadow: none;
+  line-height: 32px;
+  background-position:
+    calc(100% - 10px) calc(50% - 2px),
+    calc(100% - 6px) calc(50% - 2px);
+  background-size: 5px 5px, 5px 5px;
+  background-repeat: no-repeat;
+}
+
+select.input.duplicate-mode-toolbar-select {
+  height: 32px;
+  padding-top: 0;
+  padding-right: 24px;
+  padding-bottom: 0;
+  line-height: 32px;
+  background-position:
+    calc(100% - 10px) calc(50% - 2px),
+    calc(100% - 6px) calc(50% - 2px);
+  background-size: 5px 5px, 5px 5px;
+  background-repeat: no-repeat;
+}
+
+.duplicate-mode-head-select {
+  @apply h-[34px] w-auto min-w-[156px] max-w-full;
+}
+
+.duplicate-mode-toolbar-select {
+  @apply w-auto max-w-[170px] shrink-0;
 }
 
 .list-head {
@@ -281,6 +318,11 @@
   overflow-anchor: none;
 }
 
+.list-item.duplicate-group-item {
+  background: hsl(var(--duplicate-group-hue) 84% 94%);
+  border-color: hsl(var(--duplicate-group-hue) 42% 78%);
+}
+
 .list-item::before {
   content: '';
   @apply absolute inset-0 opacity-0;
@@ -361,6 +403,11 @@
   box-shadow: 0 10px 22px rgba(15, 23, 42, 0.06), 0 0 0 1px rgba(37, 99, 235, 0.04);
 }
 
+.list-item.duplicate-group-item:hover {
+  background: hsl(var(--duplicate-group-hue) 88% 92%);
+  border-color: hsl(var(--duplicate-group-hue) 52% 68%);
+}
+
 .list-item:hover::before {
   opacity: 1;
   transform: translateX(0);
@@ -372,6 +419,11 @@
   box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.42);
 }
 
+.list-item.duplicate-group-item.active {
+  background: hsl(var(--duplicate-group-hue) 88% 89%);
+  border-color: hsl(var(--duplicate-group-hue) 58% 58%);
+}
+
 .list-item.active::before {
   opacity: 1;
   transform: translateX(0);