diff --git a/src/components/asignaturas/detalle/HistorialTab.tsx b/src/components/asignaturas/detalle/HistorialTab.tsx
index 7c8bee7..f0dfa68 100644
--- a/src/components/asignaturas/detalle/HistorialTab.tsx
+++ b/src/components/asignaturas/detalle/HistorialTab.tsx
@@ -11,7 +11,6 @@ import {
   Filter,
   Calendar,
   Loader2,
-  Eye,
 } from 'lucide-react'
 import { useState, useMemo } from 'react'
 
@@ -249,7 +248,16 @@ export function HistorialTab() {
                           `bg-current ${config.color}`,
                         )}
                       />
-                      <Card className="card-interactive">
+                      <Card
+                        className="border-border card-interactive hover:border-primary/50 flex-1 cursor-pointer shadow-none transition-colors"
+                        onClick={() => openCompareModal(cambio)}
+                        role="button"
+                        tabIndex={0}
+                        onKeyDown={(e) => {
+                          if (e.key === 'Enter' || e.key === ' ')
+                            openCompareModal(cambio)
+                        }}
+                      >
                         <CardContent className="py-4">
                           <div className="flex items-start gap-4">
                             <div
@@ -265,16 +273,7 @@ export function HistorialTab() {
                                 <p className="font-medium">
                                   {cambio.descripcion}
                                 </p>
-                                {/* BOTÓN PARA VER CAMBIOS */}
-                                <Button
-                                  variant="ghost"
-                                  size="sm"
-                                  className="gap-2 text-blue-600 hover:bg-blue-50 hover:text-blue-700"
-                                  onClick={() => openCompareModal(cambio)}
-                                >
-                                  <Eye className="h-4 w-4" />
-                                  Ver cambios
-                                </Button>
+
                                 <span className="text-muted-foreground text-xs">
                                   {format(cambio.fecha, 'HH:mm')}
                                 </span>
diff --git a/src/components/auth/LoginCard.tsx b/src/components/auth/LoginCard.tsx
index 0a02dd9..4912a27 100644
--- a/src/components/auth/LoginCard.tsx
+++ b/src/components/auth/LoginCard.tsx
@@ -9,11 +9,13 @@ export function LoginCard() {
 
   return (
     <div className="w-full max-w-md rounded-2xl bg-white p-8 shadow-xl">
-      <img
-        src="/4_IMAGOTIPO_LASALLE_MEXICO_COLOR_RGB_2020.png"
-        alt="La Salle México"
-        className="mb-6 h-20 w-auto"
-      />
+      <div className="flex justify-center">
+        <img
+          src="/4_IMAGOTIPO_LASALLE_MEXICO_COLOR_RGB_2020.png"
+          alt="La Salle México"
+          className="mb-6 h-20 w-auto"
+        />
+      </div>
       <h1 className="mb-1 text-center text-2xl font-semibold">
         Iniciar sesión
       </h1>
diff --git a/src/components/ui/button.tsx b/src/components/ui/button.tsx
index 6a64f8b..148a6ef 100644
--- a/src/components/ui/button.tsx
+++ b/src/components/ui/button.tsx
@@ -7,7 +7,7 @@ import type { VariantProps } from 'class-variance-authority'
 import { cn } from '@/lib/utils'
 
 const buttonVariants = cva(
-  "focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive inline-flex shrink-0 items-center justify-center gap-2 rounded-md text-sm font-medium whitespace-nowrap transition-all outline-none focus-visible:ring-[3px] disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
+  "focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive inline-flex shrink-0 items-center justify-center gap-2 rounded-md text-sm font-medium whitespace-nowrap transition-all outline-none focus-visible:ring-[3px] disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
   {
     variants: {
       variant: {
diff --git a/src/routes/planes/$planId/_detalle/historial.tsx b/src/routes/planes/$planId/_detalle/historial.tsx
index c172cff..af05e7c 100644
--- a/src/routes/planes/$planId/_detalle/historial.tsx
+++ b/src/routes/planes/$planId/_detalle/historial.tsx
@@ -9,7 +9,6 @@ import {
   User,
   Loader2,
   Clock,
-  Eye,
   History,
   Calendar,
   ChevronLeft,
@@ -156,7 +155,16 @@ function RouteComponent() {
                 </div>
               </div>
 
-              <Card className="border-border hover:border-primary/50 flex-1 shadow-none transition-colors">
+              <Card
+                className="border-border hover:border-primary/50 flex-1 cursor-pointer shadow-none transition-colors"
+                onClick={() => openCompareModal(event)}
+                role="button"
+                tabIndex={0}
+                onKeyDown={(e) => {
+                  if (e.key === 'Enter' || e.key === ' ')
+                    openCompareModal(event)
+                }}
+              >
                 <CardContent className="p-4">
                   <div className="flex flex-col gap-2">
                     {/* LÍNEA SUPERIOR: Título a la izquierda --- Usuario, Botón y Fecha a la derecha */}
@@ -186,15 +194,6 @@ function RouteComponent() {
                           </span>
                         </div>
 
-                        {/* Botón Ver Cambios */}
-                        <button
-                          onClick={() => openCompareModal(event)}
-                          className="text-primary md:text-muted-foreground md:hover:text-primary group/btn flex items-center gap-1.5 text-xs font-medium"
-                        >
-                          <Eye className="text-muted-foreground/70 group-hover/btn:text-primary h-4 w-4" />
-                          <span>Ver cambios</span>
-                        </button>
-
                         {/* Fecha exacta (Solo visible en desktop para no amontonar) */}
                         <span className="text-muted-foreground/70 hidden text-[11px] lg:block">
                           {format(event.date, 'yyyy-MM-dd HH:mm')}
diff --git a/src/routes/planes/$planId/asignaturas/$asignaturaId/route.tsx b/src/routes/planes/$planId/asignaturas/$asignaturaId/route.tsx
index 4f34a7e..6b4dbc5 100644
--- a/src/routes/planes/$planId/asignaturas/$asignaturaId/route.tsx
+++ b/src/routes/planes/$planId/asignaturas/$asignaturaId/route.tsx
@@ -246,7 +246,7 @@ function AsignaturaLayout() {
               {/* Badge Estático del Tipo (Estilo oscuro sutil) */}
               <Badge
                 variant="outline"
-                className="flex h-8 items-center gap-1.5 border-white/10 bg-white/5 px-3 text-white hover:border-white/20 hover:bg-white/10"
+                className="flex h-8 cursor-default items-center gap-1.5 border-white/10 bg-white/5 px-3 text-white"
               >
                 <Tag size={12} className="text-white/70" />
                 {asignaturaApi.tipo}
diff --git a/src/routes/planes/_lista.tsx b/src/routes/planes/_lista.tsx
index d6d6c81..008314c 100644
--- a/src/routes/planes/_lista.tsx
+++ b/src/routes/planes/_lista.tsx
@@ -194,9 +194,7 @@ function RouteComponent() {
                 variant="secondary"
                 onClick={resetFilters}
                 disabled={isClearDisabled}
-                className={`shadow-md ${
-                  isClearDisabled ? 'cursor-not-allowed opacity-50' : ''
-                }`}
+                className={`shadow-md`}
               >
                 <Icons.X className="h-4 w-4" /> Limpiar
               </Button>
diff --git a/src/styles.css b/src/styles.css
index 7111ab4..83e2997 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -346,3 +346,15 @@ body {
 .login-bg {
   background-image: url('/fondo_login.png');
 }
+
+@layer base {
+  button:not(:disabled),
+  [role='button']:not(:disabled) {
+    cursor: pointer;
+  }
+
+  button:disabled,
+  [role='button']:disabled {
+    cursor: not-allowed !important;
+  }
+}