feat: enhance RouteComponent with facultades color and improve StatCard UI

src/routes/_authenticated/plan/$planId.tsx

@@ -165,6 +165,7 @@ function RouteComponent() {
       return () => ctx.revert()
     }
   }, [])
+  const facColor = plan.carreras?.facultades?.color ?? null
 
   return (
     <div className="relative p-6 space-y-6">
@@ -217,13 +218,22 @@ function RouteComponent() {
         </CardHeader>
 
         {/* stats */}
-        <CardContent ref={statsRef} className="relative z-10 grid gap-4 sm:grid-cols-2 lg:grid-cols-4">
-          <KV className="kv" label="Nivel" value={plan.nivel} />
-          <KV className="kv" label="Duración" value={plan.duracion} />
-          <KV className="kv" label="Créditos" value={plan.total_creditos} />
-          <KV className="kv" label="Asignaturas" value={asignaturasCount} />
-          <KV className="kv" label="Creado" value={plan.fecha_creacion ? new Date(plan.fecha_creacion).toLocaleDateString() : '—'} />
+        <CardContent
+          ref={statsRef}
+          className="relative z-10 grid gap-3 [grid-template-columns:repeat(auto-fit,minmax(180px,1fr))]"
+        >
+          <StatCard label="Nivel" value={plan.nivel ?? "—"} Icon={Icons.GraduationCap} accent={facColor} />
+          <StatCard label="Duración" value={plan.duracion ?? "—"} Icon={Icons.Clock} accent={facColor} />
+          <StatCard label="Créditos" value={fmt(plan.total_creditos)} Icon={Icons.Coins} accent={facColor} />
+          <StatCard label="Asignaturas" value={fmt(asignaturasCount)} Icon={Icons.BookOpen} accent={facColor} />
+          <StatCard
+            label="Creado"
+            value={plan.fecha_creacion ? new Date(plan.fecha_creacion).toLocaleDateString() : "—"}
+            Icon={Icons.CalendarDays}
+            accent={facColor}
+          />
         </CardContent>
+
       </Card>
 
       <AcademicSections planId={plan.id} plan={plan} color={fac?.color} />
@@ -231,12 +241,58 @@ function RouteComponent() {
   )
 }
 
+function hexToRgbA(hex?: string | null, a = .25) {
+  if (!hex) return `rgba(37,99,235,${a})`
+  const h = hex.replace("#", "")
+  const v = h.length === 3 ? h.split("").map(c => c + c).join("") : h
+  const n = parseInt(v, 16)
+  const r = (n >> 16) & 255, g = (n >> 8) & 255, b = n & 255
+  return `rgba(${r},${g},${b},${a})`
+}
+
+const fmt = (n?: number | null) => (n !== null && n !== undefined) ? Intl.NumberFormat().format(n) : "—"
 /* ===== UI bits ===== */
-function KV({ label, value, className = '' }: { label: string; value?: string | number | null; className?: string }) {
+type StatProps = {
+  label: string
+  value?: React.ReactNode
+  Icon?: React.ComponentType<React.SVGProps<SVGSVGElement>>
+  accent?: string | null  // color de facultad (hex) opcional
+  className?: string
+  title?: string
+}
+function StatCard({ label, value = "—", Icon = Icons.Info, accent, className = "", title }: StatProps) {
+  const border = hexToRgbA(accent, .28)
+  const chipBg = hexToRgbA(accent, .08)
+  const glow = hexToRgbA(accent, .14)
+
   return (
-    <div className={`rounded-xl border p-4 shadow-sm hover:shadow-md transition-shadow ${className}`}>
-      <div className="text-xs text-neutral-500">{label}</div>
-      <div className="text-base font-medium">{value ?? '—'}</div>
+    <div
+      className={`group relative overflow-hidden rounded-2xl border p-4 sm:p-5
+                  bg-white/70 dark:bg-neutral-900/60 backdrop-blur
+                  shadow-sm hover:shadow-md transition-all ${className}`}
+      style={{ borderColor: border }}
+      title={title ?? (typeof value === "string" ? value : undefined)}
+      aria-label={`${label}: ${typeof value === "string" ? value : ""}`}
+    >
+      <div className="flex items-center justify-between gap-3">
+        <div className="text-xs text-neutral-500">{label}</div>
+        <span
+          className="inline-flex items-center justify-center rounded-xl px-2.5 py-2 border"
+          style={{ borderColor: border, background: chipBg }}
+        >
+          <Icon className="h-4 w-4 opacity-80" />
+        </span>
+      </div>
+
+      <div className="mt-1 text-2xl font-semibold tabular-nums tracking-tight truncate">
+        {value}
+      </div>
+
+      {/* glow sutil en hover */}
+      <div
+        className="pointer-events-none absolute inset-0 opacity-0 group-hover:opacity-100 transition-opacity"
+        style={{ background: `radial-gradient(600px 120px at 20% -10%, ${glow}, transparent 60%)` }}
+      />
     </div>
   )
 }