diff --git a/ui/src/pages/Admin/UserManagement.module.css b/ui/src/pages/Admin/UserManagement.module.css
index 614244b4..8613d45c 100644
--- a/ui/src/pages/Admin/UserManagement.module.css
+++ b/ui/src/pages/Admin/UserManagement.module.css
@@ -1,48 +1,191 @@
-.statStrip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
-.splitPane { display: grid; grid-template-columns: 52fr 48fr; height: calc(100vh - 280px); }
-.listPane { overflow-y: auto; border-right: 1px solid var(--border-subtle); padding-right: 16px; }
-.detailPane { overflow-y: auto; padding-left: 16px; }
-.listHeader { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
-.entityList { display: flex; flex-direction: column; gap: 2px; }
+.statStrip {
+  display: grid;
+  grid-template-columns: repeat(3, 1fr);
+  gap: 10px;
+  margin-bottom: 16px;
+}
+
+.splitPane {
+  display: grid;
+  grid-template-columns: 52fr 48fr;
+  gap: 1px;
+  background: var(--border-subtle);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  min-height: 500px;
+  box-shadow: var(--shadow-card);
+}
+
+.listPane {
+  background: var(--bg-surface);
+  display: flex;
+  flex-direction: column;
+  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
+}
+
+.detailPane {
+  background: var(--bg-surface);
+  overflow-y: auto;
+  padding: 20px;
+  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
+}
+
+.listHeader {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 12px;
+  border-bottom: 1px solid var(--border-subtle);
+}
+
+.listHeader input { flex: 1; }
+
+.entityList {
+  flex: 1;
+  overflow-y: auto;
+}
+
 .entityItem {
-  display: flex; align-items: center; gap: 10px; padding: 8px 10px;
-  cursor: pointer; border-radius: 6px; transition: background 0.1s;
+  display: flex;
+  align-items: flex-start;
+  gap: 10px;
+  padding: 10px 12px;
+  cursor: pointer;
+  transition: background 0.1s;
+  border-bottom: 1px solid var(--border-subtle);
 }
-.entityItem:hover { background: var(--bg-hover); }
-.entityItemSelected { background: var(--bg-raised); }
-.entityInfo { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
-.entityName { font-weight: 600; font-size: 13px; display: flex; align-items: center; gap: 6px; }
-.entityMeta { font-size: 11px; color: var(--text-muted); }
-.entityTags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 2px; }
+
+.entityItem:last-child {
+  border-bottom: none;
+}
+
+.entityItem:hover {
+  background: var(--bg-hover);
+}
+
+.entityItemSelected {
+  background: var(--bg-raised);
+}
+
+.entityInfo {
+  display: flex;
+  flex-direction: column;
+  gap: 2px;
+  flex: 1;
+  min-width: 0;
+}
+
+.entityName {
+  font-weight: 600;
+  font-size: 13px;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  color: var(--text-primary);
+}
+
+.entityMeta {
+  font-size: 11px;
+  color: var(--text-muted);
+  margin-top: 2px;
+}
+
+.entityTags {
+  display: flex;
+  gap: 4px;
+  flex-wrap: wrap;
+  margin-top: 4px;
+}
+
 .createForm {
-  background: var(--bg-surface); border: 1px solid var(--border-subtle);
-  border-radius: var(--radius-lg); padding: 12px; margin-bottom: 12px;
+  background: var(--bg-raised);
+  border-bottom: 1px solid var(--border-subtle);
+  padding: 12px;
 }
-.createFormActions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
+
+.createFormActions {
+  display: flex;
+  gap: 8px;
+  justify-content: flex-end;
+  margin-top: 8px;
+}
+
 .detailHeader {
-  display: flex; align-items: center; gap: 12px;
-  margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border-subtle);
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  margin-bottom: 16px;
+  padding-bottom: 16px;
+  border-bottom: 1px solid var(--border-subtle);
 }
+
 .metaGrid {
-  display: grid; grid-template-columns: 100px 1fr; gap: 6px 12px;
-  font-size: 13px; margin-bottom: 16px;
+  display: grid;
+  grid-template-columns: 100px 1fr;
+  gap: 6px 12px;
+  font-size: 13px;
+  margin-bottom: 16px;
 }
+
 .metaLabel {
-  font-weight: 700; font-size: 10px; text-transform: uppercase;
-  letter-spacing: 0.6px; color: var(--text-muted);
-}
-.sectionTags { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 8px; }
-.inheritedNote { font-size: 11px; font-style: italic; color: var(--text-muted); margin-top: 4px; }
-.securitySection {
-  padding: 12px; border: 1px solid var(--border-subtle);
-  border-radius: var(--radius-lg); margin-bottom: 16px;
-}
-.resetForm { display: flex; gap: 8px; margin-top: 8px; }
-.emptyDetail {
-  display: flex; align-items: center; justify-content: center;
-  height: 100%; color: var(--text-muted); font-size: 13px;
+  font-weight: 700;
+  font-size: 10px;
+  text-transform: uppercase;
+  letter-spacing: 0.6px;
+  color: var(--text-muted);
 }
+
 .sectionTitle {
-  font-size: 13px; font-weight: 700; color: var(--text-primary);
-  margin-bottom: 8px; margin-top: 16px;
+  font-size: 13px;
+  font-weight: 700;
+  color: var(--text-primary);
+  margin-bottom: 8px;
+  margin-top: 16px;
+}
+
+.sectionTags {
+  display: flex;
+  gap: 4px;
+  flex-wrap: wrap;
+  margin-bottom: 8px;
+}
+
+.inheritedNote {
+  font-size: 11px;
+  font-style: italic;
+  color: var(--text-muted);
+  margin-top: 4px;
+}
+
+.securitySection {
+  padding: 12px;
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-lg);
+  margin-bottom: 16px;
+}
+
+.resetForm {
+  display: flex;
+  gap: 8px;
+  margin-top: 8px;
+}
+
+.emptyDetail {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  height: 100%;
+  color: var(--text-muted);
+  font-size: 13px;
+}
+
+.emptySearch {
+  padding: 20px;
+  text-align: center;
+  color: var(--text-muted);
+  font-size: 12px;
+}
+
+.providerBadge {
+  font-size: 9px;
 }
diff --git a/ui/src/pages/Admin/UsersTab.tsx b/ui/src/pages/Admin/UsersTab.tsx
index 24830d30..7ed9c8b9 100644
--- a/ui/src/pages/Admin/UsersTab.tsx
+++ b/ui/src/pages/Admin/UsersTab.tsx
@@ -307,7 +307,11 @@ export default function UsersTab() {
                     <Badge label={user.provider} variant="outlined" />
                   )}
                 </div>
-                {user.email && <div className={styles.entityMeta}>{user.email}</div>}
+                <div className={styles.entityMeta}>
+                  {user.email || user.userId}
+                  {user.directGroups.length > 0 && ` · ${user.directGroups.map((g) => g.name).join(', ')}`}
+                  {user.directGroups.length === 0 && ' · no groups'}
+                </div>
                 {(user.directRoles.length > 0 || user.directGroups.length > 0) && (
                   <div className={styles.entityTags}>
                     {user.directRoles.map((r) => (