diff --git a/susconecta/components/header.tsx b/susconecta/components/header.tsx
index 71ee7b0..b1e9117 100644
--- a/susconecta/components/header.tsx
+++ b/susconecta/components/header.tsx
@@ -47,18 +47,18 @@ export function Header() {
             <SimpleThemeToggle />
             <Button
               variant="outline"
-              className="text-primary border-primary hover:bg-primary hover:text-primary-foreground bg-transparent"
+              className="text-primary border-primary bg-transparent shadow-sm shadow-blue-500/10 border border-blue-200 hover:bg-blue-50 dark:shadow-none dark:border-primary dark:hover:bg-primary dark:hover:text-primary-foreground"
               asChild
             >
               <Link href="/login-paciente">Sou Paciente</Link>
             </Button>
-            <Button className="bg-primary hover:bg-primary/90 text-primary-foreground">
+            <Button className="bg-primary hover:bg-primary/90 text-primary-foreground shadow-sm shadow-blue-500/10 border border-blue-200 dark:shadow-none dark:border-transparent">
               <Link href="/login">Sou Profissional de Saúde</Link>
             </Button>
             <Link href="/login-admin">
               <Button
                 variant="outline"
-                className="text-slate-700 border-slate-600 hover:bg-slate-700 hover:text-white bg-transparent"
+                className="text-foreground border-slate-600 bg-transparent shadow-sm shadow-gray-500/10 border border-gray-300 hover:bg-gray-50 dark:shadow-none dark:border-slate-600 dark:hover:bg-slate-700 dark:hover:text-white cursor-pointer"
               >
                 Sou Administrador de uma Clínica
               </Button>
@@ -97,18 +97,18 @@ export function Header() {
                 <SimpleThemeToggle />
                 <Button
                   variant="outline"
-                  className="text-primary border-primary hover:bg-primary hover:text-primary-foreground bg-transparent"
+                  className="text-primary border-primary bg-transparent shadow-sm shadow-blue-500/10 border border-blue-200 hover:bg-blue-50 dark:shadow-none dark:border-primary dark:hover:bg-primary dark:hover:text-primary-foreground"
                   asChild
                 >
                   <Link href="/login-paciente">Sou Paciente</Link>
                 </Button>
-                <Button className="bg-primary hover:bg-primary/90 text-primary-foreground w-full">
+                <Button className="bg-primary hover:bg-primary/90 text-primary-foreground w-full shadow-sm shadow-blue-500/10 border border-blue-200 dark:shadow-none dark:border-transparent">
                   <Link href="/login">Sou Profissional de Saúde</Link>
                 </Button>
                 <Link href="/login-admin">
                   <Button
                     variant="outline"
-                    className="text-slate-700 border-slate-600 hover:bg-slate-700 hover:text-white bg-transparent w-full"
+                    className="text-foreground border-slate-600 bg-transparent w-full shadow-sm shadow-gray-500/10 border border-gray-300 hover:bg-gray-50 dark:shadow-none dark:border-slate-600 dark:hover:bg-slate-700 dark:hover:text-white cursor-pointer"
                   >
                     Sou Administrador de uma Clínica
                   </Button>
diff --git a/susconecta/components/hero-section.tsx b/susconecta/components/hero-section.tsx
index f73cc84..3fb27cc 100644
--- a/susconecta/components/hero-section.tsx
+++ b/susconecta/components/hero-section.tsx
@@ -27,7 +27,7 @@ export function HeroSection() {
             <div className="flex flex-col sm:flex-row gap-4">
               <Button 
                 size="lg" 
-                className="bg-primary hover:bg-primary/90 text-primary-foreground cursor-pointer"
+                className="bg-primary hover:bg-primary/90 text-primary-foreground cursor-pointer shadow-sm shadow-blue-500/10 border border-blue-200 dark:shadow-none dark:border-transparent"
                 asChild
               >
                 <Link href="/login-paciente">Portal do Paciente</Link>
@@ -35,7 +35,7 @@ export function HeroSection() {
               <Button
                 size="lg"
                 variant="outline"
-                className="text-primary border-primary hover:bg-primary hover:text-primary-foreground bg-transparent cursor-pointer"
+                className="text-primary border-primary bg-transparent cursor-pointer shadow-sm shadow-blue-500/10 border border-blue-200 hover:bg-blue-50 dark:shadow-none dark:border-primary dark:hover:bg-primary dark:hover:text-primary-foreground"
                 asChild
               >
                 <Link href="/login">Sou Profissional de Saúde</Link>
diff --git a/susconecta/components/simple-theme-toggle.tsx b/susconecta/components/simple-theme-toggle.tsx
index 033d129..c322131 100644
--- a/susconecta/components/simple-theme-toggle.tsx
+++ b/susconecta/components/simple-theme-toggle.tsx
@@ -13,7 +13,12 @@ export function SimpleThemeToggle() {
   }
 
   return (
-    <Button variant="outline" size="icon" onClick={toggleTheme}>
+    <Button 
+      variant="outline" 
+      size="icon" 
+      onClick={toggleTheme}
+      className="hover:text-muted-foreground cursor-pointer !shadow-sm !shadow-black/10 !border-2 !border-black dark:!shadow-none dark:!border-border"
+    >
       <Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
       <Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
       <span className="sr-only">Alternar tema</span>