diff --git a/apps/desktop/src/chat/ChatWidget.tsx b/apps/desktop/src/chat/ChatWidget.tsx
index 74d4435..190c824 100644
--- a/apps/desktop/src/chat/ChatWidget.tsx
+++ b/apps/desktop/src/chat/ChatWidget.tsx
@@ -133,7 +133,7 @@ function AudioWaveform({
 }) {
   const playedBars = Math.round(progress * peaks.length)
   return (
-    <div className="flex h-8 items-center gap-[2px]">
+    <div className="flex h-8 items-center gap-[2px] overflow-hidden">
       {peaks.map((value, index) => {
         const height = Math.max(4, Math.round(value * 24))
         const played = index <= playedBars
@@ -191,7 +191,7 @@ function AudioAttachmentPlayer({
         const decoded = await audioContext.decodeAudioData(buffer)
         await audioContext.close()
         if (!cancelled) {
-          setPeaks(extractPeaks(decoded))
+          setPeaks(extractPeaks(decoded, 36))
         }
       } catch (error) {
         console.error("Falha ao gerar waveform:", error)
@@ -246,10 +246,11 @@ function AudioAttachmentPlayer({
 
   const progress = duration > 0 ? currentTime / duration : 0
   const sizeLabel = formatAttachmentSize(size)
+  const canSeek = duration > 0
 
   return (
     <div
-      className={`flex items-center gap-3 rounded-2xl border px-3 py-2 ${
+      className={`flex w-full max-w-[280px] items-center gap-3 rounded-2xl border px-3 py-2 ${
         isAgent ? "border-white/10 bg-white/10 text-white" : "border-slate-200 bg-white text-slate-900"
       }`}
     >
@@ -264,14 +265,34 @@ function AudioAttachmentPlayer({
         {isPlaying ? <Pause className="size-4" /> : <Play className="size-4" />}
       </button>
 
-      <div className="flex-1">
-        {isLoadingWaveform ? (
-          <div className={`h-8 rounded-lg ${isAgent ? "bg-white/10" : "bg-slate-100"}`} />
-        ) : peaks.length > 0 ? (
-          <AudioWaveform peaks={peaks} progress={progress} isAgent={isAgent} />
-        ) : (
-          <div className={`h-8 rounded-lg ${isAgent ? "bg-white/10" : "bg-slate-100"}`} />
-        )}
+      <div className="flex-1 min-w-0">
+        <button
+          type="button"
+          onPointerDown={(event) => {
+            if (!audioRef.current || duration <= 0) return
+            const rect = event.currentTarget.getBoundingClientRect()
+            if (rect.width <= 0) return
+            const ratio = (event.clientX - rect.left) / rect.width
+            const clamped = Math.min(1, Math.max(0, ratio))
+            const targetTime = clamped * duration
+            audioRef.current.currentTime = targetTime
+            setCurrentTime(targetTime)
+          }}
+          aria-label="Buscar posição do áudio"
+          className={[
+            "w-full rounded-lg bg-transparent p-0 text-left transition-colors focus-visible:outline-none",
+            canSeek ? "cursor-pointer" : "cursor-default",
+            canSeek ? (isAgent ? "hover:bg-white/10" : "hover:bg-slate-100") : "",
+          ].join(" ")}
+        >
+          {isLoadingWaveform ? (
+            <div className={`h-8 rounded-lg ${isAgent ? "bg-white/10" : "bg-slate-100"}`} />
+          ) : peaks.length > 0 ? (
+            <AudioWaveform peaks={peaks} progress={progress} isAgent={isAgent} />
+          ) : (
+            <div className={`h-8 rounded-lg ${isAgent ? "bg-white/10" : "bg-slate-100"}`} />
+          )}
+        </button>
         <div className={`mt-1 flex items-center justify-between text-[10px] ${isAgent ? "text-white/60" : "text-slate-400"}`}>
           <span>{formatDuration(currentTime)}</span>
           <span className="truncate">{sizeLabel ?? formatDuration(duration)}</span>
@@ -282,7 +303,9 @@ function AudioAttachmentPlayer({
         type="button"
         onClick={handleDownload}
         className={`flex size-8 items-center justify-center rounded-md ${
-          isAgent ? "text-white/70 hover:text-white" : "text-slate-500 hover:text-slate-700"
+          isAgent
+            ? "text-white/70 hover:bg-white/10 hover:text-white"
+            : "text-slate-500 hover:bg-slate-100 hover:text-slate-700"
         }`}
         aria-label="Baixar áudio"
       >
@@ -1147,12 +1170,12 @@ export function ChatWidget({ ticketId, ticketRef }: ChatWidgetProps) {
                 return (
                   <div
                     key={att.storageId}
-                    className="flex items-center gap-2 rounded-lg bg-slate-100 px-2 py-1 text-xs"
+                    className="flex w-full items-center gap-2 rounded-lg bg-slate-100 px-2 py-1 text-xs"
                   >
-                    <audio controls src={att.previewUrl} className="h-7 w-40" />
+                    <audio controls src={att.previewUrl} className="h-8 w-full min-w-0" />
                     <button
                       onClick={() => handleRemoveAttachment(att.storageId)}
-                      className="flex size-6 items-center justify-center rounded-full text-slate-500 hover:bg-slate-200"
+                      className="flex size-6 shrink-0 items-center justify-center rounded-full text-slate-500 hover:bg-slate-200"
                       aria-label="Remover áudio"
                     >
                       <X className="size-3" />
diff --git a/src/components/chat/chat-message-attachment.tsx b/src/components/chat/chat-message-attachment.tsx
index 5f7e559..e70ce47 100644
--- a/src/components/chat/chat-message-attachment.tsx
+++ b/src/components/chat/chat-message-attachment.tsx
@@ -42,7 +42,7 @@ function AudioWaveform({
 }) {
   const playedBars = Math.round(progress * peaks.length)
   return (
-    <div className="flex h-9 items-center gap-[2px]">
+    <div className="flex h-9 items-center gap-[2px] overflow-hidden">
       {peaks.map((value, index) => {
         const height = Math.max(4, Math.round(value * 28))
         const played = index <= playedBars
@@ -100,7 +100,7 @@ function AudioAttachmentPlayer({
         const decoded = await audioContext.decodeAudioData(buffer)
         await audioContext.close()
         if (!cancelled) {
-          setPeaks(extractPeaks(decoded))
+          setPeaks(extractPeaks(decoded, 36))
         }
       } catch (error) {
         console.error("Falha ao gerar waveform:", error)
@@ -155,11 +155,22 @@ function AudioAttachmentPlayer({
 
   const progress = duration > 0 ? currentTime / duration : 0
   const sizeLabel = formatAttachmentSize(size)
+  const canSeek = duration > 0
+  const handleSeek = (event: { currentTarget: HTMLButtonElement; clientX: number }) => {
+    if (!audioRef.current || duration <= 0) return
+    const rect = event.currentTarget.getBoundingClientRect()
+    if (rect.width <= 0) return
+    const ratio = (event.clientX - rect.left) / rect.width
+    const clamped = Math.min(1, Math.max(0, ratio))
+    const targetTime = clamped * duration
+    audioRef.current.currentTime = targetTime
+    setCurrentTime(targetTime)
+  }
 
   return (
     <div
       className={cn(
-        "flex items-center gap-3 rounded-2xl border px-3 py-2",
+        "flex w-full max-w-[280px] items-center gap-3 rounded-2xl border px-3 py-2",
         tone === "dark"
           ? "border-white/10 bg-white/10 text-white"
           : "border-slate-200 bg-white text-slate-900"
@@ -179,14 +190,25 @@ function AudioAttachmentPlayer({
         {isPlaying ? <Pause className="size-4" /> : <Play className="size-4" />}
       </Button>
 
-      <div className="flex-1">
-        {isLoadingWaveform ? (
-          <div className={cn("h-9 rounded-lg", tone === "dark" ? "bg-white/10" : "bg-slate-100")} />
-        ) : peaks.length > 0 ? (
-          <AudioWaveform peaks={peaks} progress={progress} tone={tone} />
-        ) : (
-          <div className={cn("h-9 rounded-lg", tone === "dark" ? "bg-white/10" : "bg-slate-100")} />
-        )}
+      <div className="flex-1 min-w-0">
+        <button
+          type="button"
+          onPointerDown={handleSeek}
+          aria-label="Buscar posição do áudio"
+          className={cn(
+            "w-full rounded-lg bg-transparent p-0 text-left transition-colors focus-visible:outline-none",
+            canSeek ? "cursor-pointer" : "cursor-default",
+            canSeek && (tone === "dark" ? "hover:bg-white/10" : "hover:bg-slate-100")
+          )}
+        >
+          {isLoadingWaveform ? (
+            <div className={cn("h-9 rounded-lg", tone === "dark" ? "bg-white/10" : "bg-slate-100")} />
+          ) : peaks.length > 0 ? (
+            <AudioWaveform peaks={peaks} progress={progress} tone={tone} />
+          ) : (
+            <div className={cn("h-9 rounded-lg", tone === "dark" ? "bg-white/10" : "bg-slate-100")} />
+          )}
+        </button>
         <div
           className={cn(
             "mt-1 flex items-center justify-between text-[10px]",
@@ -204,7 +226,9 @@ function AudioAttachmentPlayer({
         size="icon"
         className={cn(
           "size-8",
-          tone === "dark" ? "text-white/70 hover:text-white" : "text-slate-500 hover:text-slate-700"
+          tone === "dark"
+            ? "text-white/70 hover:bg-white/10 hover:text-white"
+            : "text-slate-500 hover:bg-slate-100 hover:text-slate-700"
         )}
         onClick={handleDownload}
         aria-label="Baixar áudio"
diff --git a/src/components/chat/chat-widget.tsx b/src/components/chat/chat-widget.tsx
index 4590038..d18084b 100644
--- a/src/components/chat/chat-widget.tsx
+++ b/src/components/chat/chat-widget.tsx
@@ -826,12 +826,12 @@ export function ChatWidget() {
               return (
                 <div
                   key={index}
-                  className="flex items-center gap-2 rounded-lg border border-slate-200 bg-white px-2 py-1"
+                  className="flex w-full items-center gap-2 rounded-lg border border-slate-200 bg-white px-2 py-1"
                 >
-                  <audio controls src={file.previewUrl} className="h-8 w-40" />
+                  <audio controls src={file.previewUrl} className="h-9 w-full min-w-0" />
                   <button
                     onClick={() => removeAttachment(index)}
-                    className="flex size-6 items-center justify-center rounded-full text-slate-500 hover:bg-slate-100"
+                    className="flex size-6 shrink-0 items-center justify-center rounded-full text-slate-500 hover:bg-slate-100"
                     aria-label="Remover áudio"
                   >
                     <X className="size-3" />
diff --git a/src/components/tickets/ticket-chat-panel.tsx b/src/components/tickets/ticket-chat-panel.tsx
index 068e995..836328f 100644
--- a/src/components/tickets/ticket-chat-panel.tsx
+++ b/src/components/tickets/ticket-chat-panel.tsx
@@ -547,8 +547,8 @@ export function TicketChatPanel({ ticketId }: TicketChatPanelProps) {
             )}
 
             {pendingAudio && (
-              <div className="mb-2 flex items-center gap-2 rounded-lg border border-slate-200 bg-white px-2 py-1">
-                <audio controls src={pendingAudio.previewUrl} className="h-8 w-44" />
+              <div className="mb-2 flex w-full items-center gap-2 rounded-lg border border-slate-200 bg-white px-2 py-1">
+                <audio controls src={pendingAudio.previewUrl} className="h-9 w-full min-w-0" />
                 <button
                   type="button"
                   onClick={() => {
@@ -557,7 +557,7 @@ export function TicketChatPanel({ ticketId }: TicketChatPanelProps) {
                     }
                     setPendingAudio(null)
                   }}
-                  className="flex size-7 items-center justify-center rounded-full text-slate-500 hover:bg-slate-100"
+                  className="flex size-7 shrink-0 items-center justify-center rounded-full text-slate-500 hover:bg-slate-100"
                   aria-label="Remover áudio"
                 >
                   <X className="size-3.5" />