diff --git a/frontend/src/components/AdminCenter.tsx b/frontend/src/components/AdminCenter.tsx
index ddacf68..c7c154c 100644
--- a/frontend/src/components/AdminCenter.tsx
+++ b/frontend/src/components/AdminCenter.tsx
@@ -138,7 +138,7 @@ export function AdminCenter() {
                 key={t.id}
                 onClick={() => setTab(t.id)}
                 className={cn(
-                  "flex flex-1 items-center justify-center gap-2 whitespace-nowrap rounded-full px-4 py-2 text-sm font-medium transition",
+                  "relative flex flex-1 items-center justify-center gap-2 whitespace-nowrap rounded-full px-4 py-2 text-sm font-medium transition",
                   tab === t.id
                     ? "bg-white text-stone-900 shadow dark:bg-zinc-800 dark:text-zinc-100"
                     : "opacity-60 hover:opacity-100",
diff --git a/frontend/src/components/ModelsPanel.tsx b/frontend/src/components/ModelsPanel.tsx
index 703d518..5faa84b 100644
--- a/frontend/src/components/ModelsPanel.tsx
+++ b/frontend/src/components/ModelsPanel.tsx
@@ -155,40 +155,42 @@ function ModelRow({ model, onChanged, onError }: {
         <span className="block truncate text-sm font-medium">{model.label || model.id}</span>
         <span className="block truncate font-mono text-xs opacity-50">{model.id}</span>
       </span>
-      <label className="flex items-center gap-1.5 text-xs opacity-80">
-        <Input
-          type="number"
-          min={0}
-          max={1000000}
-          value={hourly}
-          disabled={busy}
-          placeholder={t("models.unlimited")}
-          aria-label={t("models.hourly")}
-          onChange={(e) => setHourly(e.target.value)}
-          onBlur={(e) => commitNumber("hourly", e.target.value)}
-          onKeyDown={(e) => {
-            if (e.key === "Enter") (e.target as HTMLInputElement).blur();
-          }}
-          className="w-24"
-        />
+      <label className="flex shrink-0 items-center gap-1.5 whitespace-nowrap text-xs opacity-80">
+        <span className="w-24 shrink-0">
+          <Input
+            type="number"
+            min={0}
+            max={1000000}
+            value={hourly}
+            disabled={busy}
+            placeholder={t("models.unlimited")}
+            aria-label={t("models.hourly")}
+            onChange={(e) => setHourly(e.target.value)}
+            onBlur={(e) => commitNumber("hourly", e.target.value)}
+            onKeyDown={(e) => {
+              if (e.key === "Enter") (e.target as HTMLInputElement).blur();
+            }}
+          />
+        </span>
         {t("models.hourly")}
       </label>
-      <label className="flex items-center gap-1.5 text-xs opacity-80">
-        <Input
-          type="number"
-          min={0}
-          max={1000000}
-          value={daily}
-          disabled={busy}
-          placeholder={t("models.unlimited")}
-          aria-label={t("models.daily")}
-          onChange={(e) => setDaily(e.target.value)}
-          onBlur={(e) => commitNumber("daily", e.target.value)}
-          onKeyDown={(e) => {
-            if (e.key === "Enter") (e.target as HTMLInputElement).blur();
-          }}
-          className="w-24"
-        />
+      <label className="flex shrink-0 items-center gap-1.5 whitespace-nowrap text-xs opacity-80">
+        <span className="w-24 shrink-0">
+          <Input
+            type="number"
+            min={0}
+            max={1000000}
+            value={daily}
+            disabled={busy}
+            placeholder={t("models.unlimited")}
+            aria-label={t("models.daily")}
+            onChange={(e) => setDaily(e.target.value)}
+            onBlur={(e) => commitNumber("daily", e.target.value)}
+            onKeyDown={(e) => {
+              if (e.key === "Enter") (e.target as HTMLInputElement).blur();
+            }}
+          />
+        </span>
         {t("models.daily")}
       </label>
       <Switch
diff --git a/frontend/src/index.css b/frontend/src/index.css
index 7532f0e..bd16a1a 100644
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -15,6 +15,7 @@
   --ka-accent-700: 4 120 87;
   --ka-accent-800: 6 95 70;
   --ka-accent-900: 6 78 59;
+  --ka-accent-950: 2 44 34;
 }
 
 html, body, #root {
diff --git a/frontend/src/lib/accent.ts b/frontend/src/lib/accent.ts
index d91c7c7..408c871 100644
--- a/frontend/src/lib/accent.ts
+++ b/frontend/src/lib/accent.ts
@@ -1,11 +1,11 @@
 /**
  * Runtime accent color (settings → accent color). Predefined palettes plus a
- * custom picker; shades 50–900 are derived from a single base hex via HSL and
+ * custom picker; shades 50–950 are derived from a single base hex via HSL and
  * written to the --ka-accent-* CSS variables that back Tailwind's `accent`
  * palette. Persisted per-browser (localStorage), like the feature flags.
  */
 
-export type AccentShades = Record<"50" | "100" | "200" | "300" | "400" | "500" | "600" | "700" | "800" | "900", string>;
+export type AccentShades = Record<"50" | "100" | "200" | "300" | "400" | "500" | "600" | "700" | "800" | "900" | "950", string>;
 
 export interface AccentPreset {
   id: string;
@@ -25,11 +25,11 @@ export const ACCENT_PRESETS: AccentPreset[] = [
 ];
 
 const STORAGE_KEY = "ka:accent";
-const SHADE_KEYS = ["50", "100", "200", "300", "400", "500", "600", "700", "800", "900"] as const;
-// Lightness ramps for 50→900 around a mid 500 (HSL L values in %).
+const SHADE_KEYS = ["50", "100", "200", "300", "400", "500", "600", "700", "800", "900", "950"] as const;
+// Lightness ramps for 50→950 around a mid 500 (HSL L values in %).
 const RAMP: Record<(typeof SHADE_KEYS)[number], number> = {
   "50": 97, "100": 93, "200": 86, "300": 76, "400": 64,
-  "500": 52, "600": 45, "700": 38, "800": 30, "900": 24,
+  "500": 52, "600": 45, "700": 38, "800": 30, "900": 24, "950": 15,
 };
 
 function hexToHsl(hex: string): { h: number; s: number; l: number } {
@@ -66,7 +66,7 @@ function hslToRgbTriplet(h: number, s: number, l: number): string {
   return `${to(r)} ${to(g)} ${to(b)}`;
 }
 
-/** Build the 50–900 ramp from a base hex (HSL ramp, emerald-style). */
+/** Build the 50–950 ramp from a base hex (HSL ramp, emerald-style). */
 export function shadesFor(baseHex: string): AccentShades {
   const { h, s } = hexToHsl(baseHex);
   const out = {} as AccentShades;
diff --git a/frontend/tailwind.config.js b/frontend/tailwind.config.js
index db5e971..ac9a900 100644
--- a/frontend/tailwind.config.js
+++ b/frontend/tailwind.config.js
@@ -21,6 +21,7 @@ export default {
           700: "rgb(var(--ka-accent-700) / <alpha-value>)",
           800: "rgb(var(--ka-accent-800) / <alpha-value>)",
           900: "rgb(var(--ka-accent-900) / <alpha-value>)",
+          950: "rgb(var(--ka-accent-950) / <alpha-value>)",
         },
       },
     },
diff --git a/src/index.ts b/src/index.ts
index 9793f8e..79e40ee 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -172,6 +172,16 @@ function cleanStr(v: unknown, max: number): string | null {
   return t;
 }
 
+// Optional free-text fields (report details, admin notes, decision reasons):
+// missing or blank → "", otherwise length-checked. Without this, sending ""
+// (which is what the frontend does when the field is left empty) would hit
+// cleanStr's empty check and wrongly 400 with a "max N chars" error.
+function cleanOptionalStr(v: unknown, max: number): string | null {
+  if (v === undefined) return "";
+  if (typeof v === "string" && v.trim() === "") return "";
+  return cleanStr(v, max);
+}
+
 function validTheme(v: unknown): v is string {
   return v === "auto" || v === "light" || v === "dark";
 }
@@ -962,7 +972,7 @@ const server = Bun.serve<{ ticketId: string | null; isAdmin: boolean }>({
         if (!reason || !(REPORT_REASONS as readonly string[]).includes(reason)) {
           return json({ error: "reason must be copyright|gore|falseinfo|bug" }, 400);
         }
-        const details = body.details === undefined ? "" : cleanStr(body.details, 2000);
+        const details = cleanOptionalStr(body.details, 2000);
         if (details === null) return json({ error: "details: max 2000 chars" }, 400);
         const clientContent = typeof body.content === "string" ? body.content.slice(0, 20000) : "";
         const clientPrompt = typeof body.prompt === "string" ? body.prompt.slice(0, 20000) : "";
@@ -1022,7 +1032,7 @@ const server = Bun.serve<{ ticketId: string | null; isAdmin: boolean }>({
           if (!status || !(REPORT_STATUSES as readonly string[]).includes(status)) {
             return json({ error: "status must be open|reviewing|resolved|dismissed" }, 400);
           }
-          const adminNote = body.adminNote === undefined ? "" : cleanStr(body.adminNote, 1000);
+          const adminNote = cleanOptionalStr(body.adminNote, 1000);
           if (adminNote === null) return json({ error: "adminNote: max 1000 chars" }, 400);
           return json({ report: setReportStatus(target.id, status, adminNote) });
         }
@@ -1097,7 +1107,7 @@ const server = Bun.serve<{ ticketId: string | null; isAdmin: boolean }>({
           if (status !== "pending" && status !== "reviewing" && status !== "accepted" && status !== "refused") {
             return json({ error: "status must be pending|reviewing|accepted|refused" }, 400);
           }
-          const reason = body.reason === undefined ? "" : cleanStr(body.reason, 500);
+          const reason = cleanOptionalStr(body.reason, 500);
           if (reason === null) return json({ error: "reason: max 500 chars" }, 400);
           if ((target.status === "accepted" || target.status === "refused") && status !== target.status) {
             return json({ error: "ticket closed" }, 409);