diff --git a/src/components/admin/alerts/admin-alerts-manager.tsx b/src/components/admin/alerts/admin-alerts-manager.tsx
index 8484f02..a443a8d 100644
--- a/src/components/admin/alerts/admin-alerts-manager.tsx
+++ b/src/components/admin/alerts/admin-alerts-manager.tsx
@@ -17,10 +17,12 @@ export function AdminAlertsManager() {
   const [range, setRange] = useState<string>("30d")
   const { session, convexUserId } = useAuth()
   const tenantId = session?.user.tenantId ?? DEFAULT_TENANT_ID
-  const now = new Date()
-  const days = range === "7d" ? 7 : range === "30d" ? 30 : range === "90d" ? 90 : null
-  const end = now.getTime()
-  const start = days ? end - days * 24 * 60 * 60 * 1000 : undefined
+  const { start, end } = useMemo(() => {
+    const daysLocal = range === "7d" ? 7 : range === "30d" ? 30 : range === "90d" ? 90 : null
+    const endLocal = Date.now()
+    const startLocal = daysLocal ? endLocal - daysLocal * 24 * 60 * 60 * 1000 : undefined
+    return { start: startLocal, end: endLocal }
+  }, [range])
 
   const alertsRaw = useQuery(
     api.alerts.list,
diff --git a/src/components/tickets/ticket-summary-header.tsx b/src/components/tickets/ticket-summary-header.tsx
index 171193c..8a8f3a1 100644
--- a/src/components/tickets/ticket-summary-header.tsx
+++ b/src/components/tickets/ticket-summary-header.tsx
@@ -3,7 +3,7 @@
 import { useCallback, useEffect, useMemo, useState } from "react"
 import { format, formatDistanceToNow } from "date-fns"
 import { ptBR } from "date-fns/locale"
-import { IconClock, IconFileTypePdf, IconPlayerPause, IconPlayerPlay } from "@tabler/icons-react"
+import { IconClock, IconDownload, IconInfoCircle, IconPlayerPause, IconPlayerPlay } from "@tabler/icons-react"
 import { useMutation, useQuery } from "convex/react"
 import { toast } from "sonner"
 import { api } from "@/convex/_generated/api"
@@ -30,6 +30,7 @@ import {
   DropdownMenuItem,
   DropdownMenuTrigger,
 } from "@/components/ui/dropdown-menu"
+import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip"
 
 interface TicketHeaderProps {
   ticket: TicketWithDetails
@@ -447,19 +448,6 @@ export function TicketSummaryHeader({ ticket }: TicketHeaderProps) {
   return (
     <div className={cardClass}>
       <div className="absolute right-6 top-6 flex items-center gap-3">
-        {workSummary ? (
-          <>
-            <Badge className="inline-flex h-9 items-center gap-2 rounded-full border border-slate-200 bg-white px-3 text-sm font-semibold text-neutral-700">
-              <IconClock className="size-4 text-neutral-700" /> Interno: {formatDuration(internalWorkedMs)}
-            </Badge>
-            <Badge className="inline-flex h-9 items-center gap-2 rounded-full border border-slate-200 bg-white px-3 text-sm font-semibold text-neutral-700">
-              <IconClock className="size-4 text-neutral-700" /> Externo: {formatDuration(externalWorkedMs)}
-            </Badge>
-            <Badge className="inline-flex h-9 items-center gap-2 rounded-full border border-slate-200 bg-white px-3 text-sm font-semibold text-neutral-700">
-              <IconClock className="size-4 text-neutral-700" /> Total: {formattedTotalWorked}
-            </Badge>
-          </>
-        ) : null}
         {!editing ? (
           <Button size="sm" className={editButtonClass} onClick={() => setEditing(true)}>
             Editar
@@ -474,8 +462,32 @@ export function TicketSummaryHeader({ ticket }: TicketHeaderProps) {
           disabled={exportingPdf}
           title="Exportar PDF"
         >
-          {exportingPdf ? <Spinner className="size-4 text-neutral-700" /> : <IconFileTypePdf className="size-5" />}
+          {exportingPdf ? <Spinner className="size-4 text-neutral-700" /> : <IconDownload className="size-5" />}
         </Button>
+        {workSummary ? (
+          <div className="flex items-center gap-2">
+            <Badge className="inline-flex h-9 items-center gap-2 rounded-full border border-slate-200 bg-white px-3 text-sm font-semibold text-neutral-700">
+              <IconClock className="size-4 text-neutral-700" /> Tempo total: {formattedTotalWorked}
+            </Badge>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <button
+                  type="button"
+                  className="inline-flex h-9 w-9 items-center justify-center rounded-full border border-slate-200 bg-white text-neutral-600 transition hover:bg-slate-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-[#00d6eb]/30"
+                  aria-label="Ver detalhamento das horas internas e externas"
+                >
+                  <IconInfoCircle className="size-4" />
+                </button>
+              </TooltipTrigger>
+              <TooltipContent className="rounded-lg border border-slate-200 bg-white px-3 py-2 text-xs font-medium text-neutral-700 shadow-lg">
+                <div className="flex flex-col gap-1">
+                  <span>Horas internas: {formatDuration(internalWorkedMs)}</span>
+                  <span>Horas externas: {formatDuration(externalWorkedMs)}</span>
+                </div>
+              </TooltipContent>
+            </Tooltip>
+          </div>
+        ) : null}
         <DeleteTicketDialog ticketId={ticket.id as Id<"tickets">} />
       </div>
       <div className="flex flex-wrap items-start justify-between gap-3">
diff --git a/src/components/tickets/tickets-table.tsx b/src/components/tickets/tickets-table.tsx
index 1ca1ee1..1f72e01 100644
--- a/src/components/tickets/tickets-table.tsx
+++ b/src/components/tickets/tickets-table.tsx
@@ -145,12 +145,12 @@ export function TicketsTable({ tickets = ticketsMock }: TicketsTableProps) {
               <TableHead className="hidden w-[120px] pl-1 pr-3 py-3 text-left text-[11px] font-semibold uppercase tracking-wide text-neutral-600 first:pl-6 last:pr-6 lg:table-cell">
                 Fila
               </TableHead>
-              <TableHead className="hidden w-[180px] pl-1 pr-3 py-3 text-left text-[11px] font-semibold uppercase tracking-wide text-neutral-600 first:pl-6 last:pr-6 lg:table-cell">
-                Empresa
-              </TableHead>
               <TableHead className="hidden w-[80px] pl-1 pr-3 py-3 text-left text-[11px] font-semibold uppercase tracking-wide text-neutral-600 first:pl-6 last:pr-6 md:table-cell">
                 Canal
               </TableHead>
+              <TableHead className="hidden w-[180px] pl-1 pr-3 py-3 text-left text-[11px] font-semibold uppercase tracking-wide text-neutral-600 first:pl-6 last:pr-6 lg:table-cell">
+                Empresa
+              </TableHead>
               <TableHead className="hidden w-[100px] pl-1 pr-3 py-3 text-left text-[11px] font-semibold uppercase tracking-wide text-neutral-600 first:pl-6 last:pr-6 md:table-cell">
                 Prioridade
               </TableHead>