diff --git a/web/src/app/admin/page.tsx b/web/src/app/admin/page.tsx
index 4e385a13..094c66e5 100644
--- a/web/src/app/admin/page.tsx
+++ b/web/src/app/admin/page.tsx
@@ -1,7 +1,7 @@
 "use client";
 
 import type { RoleKey } from "@server/data/roles";
-import { BarChart2, ShieldCheck, UserPlus, Users } from "lucide-react";
+import { BarChart2, ShieldCheck, UserPlus } from "lucide-react";
 import type { Route } from "next";
 import Link from "next/link";
 import { AuthGuard } from "@/components/auth/auth-guard";
diff --git a/web/src/app/knowledge/page.tsx b/web/src/app/knowledge/page.tsx
index f5785060..dc24e22b 100644
--- a/web/src/app/knowledge/page.tsx
+++ b/web/src/app/knowledge/page.tsx
@@ -708,7 +708,7 @@ function KnowledgePage() {
           if (!open) resetCreateItemForm();
         }}
         title="New Item"
-        className="max-w-2xl"
+        className="flex h-[80vh] max-w-2xl flex-col"
         footer={
           <>
             <Button
@@ -732,7 +732,7 @@ function KnowledgePage() {
           </>
         }
       >
-        <div className="space-y-3">
+        <div className="flex flex-1 flex-col gap-3 min-h-0">
           <Input
             placeholder="Title"
             value={newItemTitle}
@@ -750,7 +750,7 @@ function KnowledgePage() {
             placeholder="Body (optional)"
             value={newItemBody}
             onChange={(e) => setNewItemBody(e.target.value)}
-            className="min-h-32"
+            className="flex-1 min-h-0 resize-none overflow-y-auto"
             disabled={isBusy}
           />
           <div className="space-y-1">
diff --git a/web/src/components/ui/input.tsx b/web/src/components/ui/input.tsx
index 73ea8679..172ae190 100644
--- a/web/src/components/ui/input.tsx
+++ b/web/src/components/ui/input.tsx
@@ -9,8 +9,8 @@ function Input({ className, type, ...props }: React.ComponentProps<"input">) {
       data-slot="input"
       className={cn(
         "file:text-foreground placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground dark:bg-input/30 border-input h-9 w-full min-w-0 rounded-md border bg-transparent px-3 py-1 text-base shadow-xs transition-[color,box-shadow] outline-none file:inline-flex file:h-7 file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
-        "focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px]",
-        "aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
+        "focus-visible:ring-2 focus-visible:ring-[var(--color-ring)]",
+        "aria-invalid:border-destructive",
         className,
       )}
       {...props}
diff --git a/web/src/components/ui/textarea.tsx b/web/src/components/ui/textarea.tsx
index 4f6221ba..a5a24a36 100644
--- a/web/src/components/ui/textarea.tsx
+++ b/web/src/components/ui/textarea.tsx
@@ -7,7 +7,7 @@ function Textarea({ className, ...props }: React.ComponentProps<"textarea">) {
     <textarea
       data-slot="textarea"
       className={cn(
-        "border-input placeholder:text-muted-foreground focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive dark:bg-input/30 flex field-sizing-content min-h-16 w-full rounded-md border bg-transparent px-3 py-2 text-base shadow-xs transition-[color,box-shadow] outline-none focus-visible:ring-[3px] disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        "border-input placeholder:text-muted-foreground focus-visible:ring-2 focus-visible:ring-[var(--color-ring)] aria-invalid:border-destructive dark:bg-input/30 flex field-sizing-content min-h-16 w-full rounded-md border bg-transparent px-3 py-2 text-base shadow-xs transition-[color,box-shadow] outline-none disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
         className,
       )}
       {...props}