diff --git a/AppImage/app/globals.css b/AppImage/app/globals.css
index 1326470..7e0954e 100644
--- a/AppImage/app/globals.css
+++ b/AppImage/app/globals.css
@@ -1,11 +1,13 @@
-@import "tailwindcss";
-@import "tw-animate-css";
-
-@custom-variant dark (&:is(.dark *));
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
 
+/* ===================== */
+/* Light Mode (default)  */
+/* ===================== */
 :root {
-  --background: oklch(1 0 0); /* blanco */
-  --foreground: oklch(0.145 0 0); /* casi negro */
+  --background: oklch(1 0 0);              /* blanco */
+  --foreground: oklch(0.145 0 0);          /* casi negro */
 
   --card: oklch(1 0 0);
   --card-foreground: var(--foreground);
@@ -13,14 +15,14 @@
   --popover: var(--card);
   --popover-foreground: var(--foreground);
 
-  --primary: oklch(0.205 0 0); /* gris oscuro */
-  --primary-foreground: oklch(0.985 0 0); /* blanco */
+  --primary: oklch(0.205 0 0);             /* gris oscuro */
+  --primary-foreground: oklch(0.985 0 0);  /* blanco */
 
   --secondary: oklch(0.97 0 0);
   --secondary-foreground: var(--primary);
 
   --muted: oklch(0.97 0 0);
-  --muted-foreground: oklch(0.556 0 0); /* gris medio */
+  --muted-foreground: oklch(0.556 0 0);    /* gris medio */
 
   --accent: oklch(0.97 0 0);
   --accent-foreground: var(--primary);
@@ -48,16 +50,14 @@
   --sidebar-accent-foreground: var(--primary);
   --sidebar-border: var(--border);
   --sidebar-ring: var(--ring);
-
-  /* Removed custom layout variables that were causing compilation issues */
 }
 
 /* ===================== */
 /* Dark Mode (gris)      */
 /* ===================== */
 .dark {
-  --background: oklch(0.22 0 0); /* gris oscuro */
-  --foreground: oklch(0.97 0 0); /* blanco/gris claro */
+  --background: oklch(0.22 0 0);           /* gris oscuro */
+  --foreground: oklch(0.97 0 0);           /* blanco/gris claro */
 
   --card: oklch(0.24 0 0);
   --card-foreground: var(--foreground);
@@ -65,7 +65,7 @@
   --popover: var(--card);
   --popover-foreground: var(--foreground);
 
-  --primary: oklch(0.83 0 0); /* casi blanco */
+  --primary: oklch(0.83 0 0);              /* casi blanco */
   --primary-foreground: var(--background);
 
   --secondary: oklch(0.28 0 0);
@@ -84,8 +84,8 @@
   --input: var(--border);
   --ring: oklch(0.55 0 0);
 
-  --chart-1: oklch(0.6 0.2 255);
-  --chart-2: oklch(0.7 0.16 165);
+  --chart-1: oklch(0.60 0.20 255);
+  --chart-2: oklch(0.70 0.16 165);
   --chart-3: oklch(0.76 0.19 70);
   --chart-4: oklch(0.63 0.25 305);
   --chart-5: oklch(0.66 0.24 20);
@@ -100,84 +100,47 @@
   --sidebar-ring: var(--ring);
 }
 
-/* Removed media query for mobile layout variables */
+/* ===================== */
+/* Base layer            */
+/* ===================== */
+@layer base {
+  * {
+    @apply border-border;
+  }
 
-@theme inline {
-  /* optional: --font-sans, --font-serif, --font-mono if they are applied in the layout.tsx */
-  --color-background: var(--background);
-  --color-foreground: var(--foreground);
-  --color-card: var(--card);
-  --color-card-foreground: var(--card-foreground);
-  --color-popover: var(--popover);
-  --color-popover-foreground: var(--popover-foreground);
-  --color-primary: var(--primary);
-  --color-primary-foreground: var(--primary-foreground);
-  --color-secondary: var(--secondary);
-  --color-secondary-foreground: var(--secondary-foreground);
-  --color-muted: var(--muted);
-  --color-muted-foreground: var(--muted-foreground);
-  --color-accent: var(--accent);
-  --color-accent-foreground: var(--accent-foreground);
-  --color-destructive: var(--destructive);
-  --color-destructive-foreground: var(--destructive-foreground);
-  --color-border: var(--border);
-  --color-input: var(--input);
-  --color-ring: var(--ring);
-  --color-chart-1: var(--chart-1);
-  --color-chart-2: var(--chart-2);
-  --color-chart-3: var(--chart-3);
-  --color-chart-4: var(--chart-4);
-  --color-chart-5: var(--chart-5);
-  --radius-sm: calc(var(--radius) - 4px);
-  --radius-md: calc(var(--radius) - 2px);
-  --radius-lg: var(--radius);
-  --radius-xl: calc(var(--radius) + 4px);
-  --color-sidebar: var(--sidebar);
-  --color-sidebar-foreground: var(--sidebar-foreground);
-  --color-sidebar-primary: var(--sidebar-primary);
-  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
-  --color-sidebar-accent: var(--sidebar-accent);
-  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
-  --color-sidebar-border: var(--sidebar-border);
-  --color-sidebar-ring: var(--sidebar-ring);
+  body {
+    @apply bg-background text-foreground;
+  }
+
+  /* Foco accesible */
+  :is(button,[role="button"],a,input,select,textarea,[tabindex]:not([tabindex="-1"])):focus {
+    @apply outline-none;
+  }
+  :is(button,[role="button"],a,input,select,textarea,[tabindex]:not([tabindex="-1"])):focus-visible {
+    @apply ring-2;
+    --tw-ring-color: var(--ring);
+    --tw-ring-opacity: 0.5; /* equivalente al /50 */
+  }
 }
 
-/* Removed @layer directives for Tailwind v4 compatibility */
-/* Base styles without @layer wrapper */
-* {
-  border-color: var(--border);
-  outline-color: color-mix(in oklch, var(--ring) 50%, transparent);
-}
+/* ===================== */
+/* Ajustes para Charts   */
+/* ===================== */
+@layer components {
+  /* Recharts axis */
+  .recharts-cartesian-axis-tick tspan {
+    fill: var(--muted-foreground);
+  }
+  .recharts-cartesian-axis-line,
+  .recharts-cartesian-grid line {
+    stroke: var(--border);
+  }
 
-body {
-  background-color: var(--background);
-  color: var(--foreground);
-}
-
-/* Accessible focus styles */
-:is(button, [role="button"], a, input, select, textarea, [tabindex]:not([tabindex="-1"])):focus {
-  outline: none;
-}
-
-:is(button, [role="button"], a, input, select, textarea, [tabindex]:not([tabindex="-1"])):focus-visible {
-  outline: 2px solid color-mix(in oklch, var(--ring) 50%, transparent);
-  outline-offset: 2px;
-}
-
-/* Chart component styles */
-.recharts-cartesian-axis-tick tspan {
-  fill: var(--muted-foreground);
-}
-
-.recharts-cartesian-axis-line,
-.recharts-cartesian-grid line {
-  stroke: var(--border);
-}
-
-.chartjs-render-monitor text {
-  fill: var(--muted-foreground);
-}
-
-.chartjs-render-monitor line {
-  stroke: var(--border);
+  /* Chart.js axis */
+  .chartjs-render-monitor text {
+    fill: var(--muted-foreground);
+  }
+  .chartjs-render-monitor line {
+    stroke: var(--border);
+  }
 }
diff --git a/AppImage/components/proxmox-dashboard.tsx b/AppImage/components/proxmox-dashboard.tsx
index 70367c1..643a54f 100644
--- a/AppImage/components/proxmox-dashboard.tsx
+++ b/AppImage/components/proxmox-dashboard.tsx
@@ -133,11 +133,11 @@ export function ProxmoxDashboard() {
     const handleScroll = () => {
       const currentScrollY = window.scrollY
 
-      if (currentScrollY < 10) {
-        // Always show navigation when at the very top
+      // Only hide navigation if scrolled down more than 100px
+      if (currentScrollY < 100) {
         setShowNavigation(true)
-      } else if (currentScrollY > lastScrollY && currentScrollY > 80) {
-        // Scrolling down - hide navigation (only after 80px)
+      } else if (currentScrollY > lastScrollY) {
+        // Scrolling down - hide navigation
         setShowNavigation(false)
       } else if (currentScrollY < lastScrollY) {
         // Scrolling up - show navigation
@@ -228,7 +228,7 @@ export function ProxmoxDashboard() {
         </div>
       )}
 
-      <header className="border-b border-border bg-card fixed top-0 left-0 right-0 z-50 shadow-sm">
+      <header className="border-b border-border bg-card sticky top-0 z-50 shadow-sm">
         <div className="container mx-auto px-4 md:px-6 py-4 md:py-4">
           {/* Logo and Title */}
           <div className="flex items-start justify-between gap-3">
@@ -317,14 +317,11 @@ export function ProxmoxDashboard() {
       </header>
 
       <div
-        className={`fixed left-0 right-0 bg-background border-b border-border transition-transform duration-300 ease-in-out z-40 ${
-          showNavigation ? "translate-y-0" : "-translate-y-full"
+        className={`sticky top-[88px] z-40 bg-background transition-transform duration-300 ease-in-out ${
+          showNavigation ? "translate-y-0" : "-translate-y-[120%]"
         }`}
-        style={{
-          top: "88px",
-        }}
       >
-        <div className="container mx-auto px-4 md:px-6 pt-4 md:pt-6 pb-4">
+        <div className="container mx-auto px-4 md:px-6 pt-4 md:pt-6">
           <Tabs value={activeTab} onValueChange={setActiveTab} className="space-y-0">
             <TabsList className="hidden md:grid w-full grid-cols-6 bg-card border border-border">
               <TabsTrigger
@@ -473,7 +470,7 @@ export function ProxmoxDashboard() {
         </div>
       </div>
 
-      <div className="container mx-auto px-4 md:px-6 py-4 md:py-6" style={{ paddingTop: "160px" }}>
+      <div className="container mx-auto px-4 md:px-6 py-4 md:py-6">
         <Tabs value={activeTab} onValueChange={setActiveTab} className="space-y-4 md:space-y-6">
           <TabsContent value="overview" className="space-y-4 md:space-y-6 mt-0">
             <SystemOverview key={`overview-${componentKey}`} />