diff --git a/components/Header.tsx b/components/Header.tsx
index 7be53bf..74d054c 100644
--- a/components/Header.tsx
+++ b/components/Header.tsx
@@ -57,10 +57,21 @@ export const Header: React.FC<HeaderProps> = ({ onReset, onClearKey, hasKey, pro
             </div>
           )}
 
+          {hasKey && (
+            <button
+              onClick={onReset}
+              className="flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-medium text-slate-600 hover:text-blue-600 hover:bg-blue-50 dark:text-slate-300 dark:hover:bg-slate-800 transition-all border border-transparent hover:border-blue-200 dark:hover:border-blue-900"
+              title="Iniciar nova análise de certificado"
+            >
+              <RefreshIcon className="w-4 h-4" />
+              <span>Nova Análise</span>
+            </button>
+          )}
+
           {hasKey && (
             <button
               onClick={onClearKey}
-              className="hidden sm:flex items-center gap-2 px-3 py-1.5 rounded-full text-xs font-medium text-slate-500 hover:text-red-500 hover:bg-red-50 dark:text-slate-400 dark:hover:bg-red-900/20 transition-all border border-transparent hover:border-red-200 dark:hover:border-red-900"
+              className="hidden sm:flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-medium text-slate-500 hover:text-red-500 hover:bg-red-50 dark:text-slate-400 dark:hover:bg-red-900/20 transition-all border border-transparent hover:border-red-200 dark:hover:border-red-900"
               title="Alterar Chave de API"
             >
               <SignOutIcon className="w-4 h-4" />
@@ -68,28 +79,17 @@ export const Header: React.FC<HeaderProps> = ({ onReset, onClearKey, hasKey, pro
             </button>
           )}
 
-          <div className="flex items-center gap-1 bg-slate-100 dark:bg-slate-800/50 p-1 rounded-full border border-slate-200 dark:border-slate-700">
-            <button
-              onClick={onReset}
-              className="p-2 rounded-full text-slate-500 dark:text-slate-400 hover:bg-white dark:hover:bg-slate-700 hover:shadow-sm focus:outline-none transition-all"
-              aria-label="Carregar outro arquivo"
-              title="Novo Relatório"
-            >
-              <RefreshIcon className="w-5 h-5" />
-            </button>
-
-            <div className="w-px h-4 bg-slate-300 dark:bg-slate-700 mx-1"></div>
-
+          <div className="flex items-center bg-slate-100 dark:bg-slate-800/50 p-1 rounded-full border border-slate-200 dark:border-slate-700">
             <button
               onClick={toggleTheme}
-              className="p-2 rounded-full text-slate-500 dark:text-slate-400 hover:bg-white dark:hover:bg-slate-700 hover:shadow-sm focus:outline-none transition-all relative overflow-hidden"
-              aria-label="Toggle theme"
+              className="p-1.5 rounded-full text-slate-500 dark:text-slate-400 hover:bg-white dark:hover:bg-slate-700 hover:shadow-sm focus:outline-none transition-all relative overflow-hidden"
+              aria-label="Alternar tema escuro/claro"
             >
               <div className="relative z-10">
                 {theme === 'light' ? (
-                  <MoonIcon className="w-5 h-5" />
+                  <MoonIcon className="w-4 h-4" />
                 ) : (
-                  <SunIcon className="w-5 h-5" />
+                  <SunIcon className="w-4 h-4" />
                 )}
               </div>
             </button>
diff --git a/components/Icons.tsx b/components/Icons.tsx
index bb3f329..d34e662 100644
--- a/components/Icons.tsx
+++ b/components/Icons.tsx
@@ -19,7 +19,7 @@ export const MoonIcon: React.FC<React.SVGProps<SVGSVGElement>> = (props) => (
 
 export const RefreshIcon: React.FC<React.SVGProps<SVGSVGElement>> = (props) => (
     <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" strokeWidth={1.5} stroke="currentColor" {...props}>
-        <path strokeLinecap="round" strokeLinejoin="round" d="M16.023 9.348h4.992v-.001M2.985 19.644v-4.992m0 0h4.992m-4.993 0l3.181 3.183a8.25 8.25 0 0011.664 0l3.181-3.183m-11.664 0l4.5-4.5a3.75 3.75 0 00-5.303 0l-4.5 4.5m11.664 0l-3.182 3.182a8.25 8.25 0 01-11.664 0l-3.182-3.182m11.664 0l-4.5-4.5a3.75 3.75 0 015.303 0l4.5 4.5" />
+        <path strokeLinecap="round" strokeLinejoin="round" d="M16.023 9.348h4.992v-.001M2.985 19.644v-4.992m0 0h4.992m-4.993 0l3.181 3.183a8.25 8.25 0 0013.803-3.7M4.031 9.865a8.25 8.25 0 0113.803-3.7l3.181 3.182m0-4.991v4.99" />
     </svg>
 );