diff --git a/src/components/SignalHistory.tsx b/src/components/SignalHistory.tsx
index 93938f9..e026a4b 100644
--- a/src/components/SignalHistory.tsx
+++ b/src/components/SignalHistory.tsx
@@ -8,6 +8,8 @@ import { auth, db, handleFirestoreError, OperationType } from '../lib/firebase';
 export const SignalHistory: React.FC = () => {
   const [signals, setSignals] = useState<Signal[]>([]);
   const [loading, setLoading] = useState(true);
+  const [startDate, setStartDate] = useState<string>('');
+  const [endDate, setEndDate] = useState<string>('');
 
   useEffect(() => {
     if (!auth.currentUser) return;
@@ -45,25 +47,71 @@ export const SignalHistory: React.FC = () => {
     );
   }
 
+  const filteredSignals = signals.filter(signal => {
+    if (!startDate && !endDate) return true;
+    
+    const signalDate = new Date(signal.timestamp);
+    if (startDate) {
+      const start = new Date(startDate);
+      // We parse 'YYYY-MM-DD' dynamically. new Date('YYYY-MM-DD') returns midnight UTC. But let's be careful with local timezones.
+      const [year, month, day] = startDate.split('-').map(Number);
+      const localStart = new Date(year, month - 1, day, 0, 0, 0, 0);
+      if (signalDate < localStart) return false;
+    }
+    
+    if (endDate) {
+      const [year, month, day] = endDate.split('-').map(Number);
+      const localEnd = new Date(year, month - 1, day, 23, 59, 59, 999);
+      if (signalDate > localEnd) return false;
+    }
+    
+    return true;
+  });
+
   return (
     <div className="space-y-6">
-      <header className="flex items-center justify-between">
+      <header className="flex flex-col md:flex-row md:items-center justify-between gap-4">
         <h1 className="text-xl font-black italic tracking-tighter text-white flex items-center gap-3 uppercase">
           <Clock size={20} className="text-brand-red" />
           Histórico de Sinais
         </h1>
-        <span className="bg-brand-gray px-4 py-2 rounded-full text-zinc-400 text-sm font-bold border border-white/5">
-          {signals.length} Sinais
-        </span>
+        <div className="flex flex-col sm:flex-row gap-3 items-center">
+          <div className="flex flex-wrap sm:flex-nowrap bg-brand-gray/50 rounded-lg p-1 border border-white/5 items-center">
+            <input 
+              type="date" 
+              value={startDate}
+              onChange={(e) => setStartDate(e.target.value)}
+              className="bg-transparent text-sm text-zinc-300 outline-none px-2 py-1 [color-scheme:dark]"
+            />
+            <span className="text-zinc-600 px-2 py-1">-</span>
+            <input 
+              type="date" 
+              value={endDate}
+              onChange={(e) => setEndDate(e.target.value)}
+              className="bg-transparent text-sm text-zinc-300 outline-none px-2 py-1 [color-scheme:dark]"
+            />
+            {(startDate || endDate) && (
+              <button 
+                onClick={() => { setStartDate(''); setEndDate(''); }}
+                className="text-xs text-brand-red px-2 hover:bg-brand-red/10 rounded py-1 ml-1"
+              >
+                Limpar
+              </button>
+            )}
+          </div>
+          <span className="bg-brand-gray px-4 py-2 rounded-full text-zinc-400 text-sm font-bold border border-white/5 whitespace-nowrap">
+            {filteredSignals.length} Sinais
+          </span>
+        </div>
       </header>
 
       <div className="grid grid-cols-1 gap-4">
-        {signals.length === 0 ? (
+        {filteredSignals.length === 0 ? (
           <div className="glass-card p-12 text-center text-zinc-500">
             Nenhum sinal encontrado. Comece realizando um novo scan.
           </div>
         ) : (
-          signals.map((signal) => (
+          filteredSignals.map((signal) => (
             <div key={signal.id} className="glass-card p-4 flex flex-col md:flex-row md:items-center gap-6 group hover:border-white/20 transition-all">
               <div className={cn(
                 "w-12 h-12 rounded-xl flex items-center justify-center shrink-0",