diff --git a/app/src/components/PressureLegend.tsx b/app/src/components/PressureLegend.tsx
new file mode 100644
index 0000000..94238d8
--- /dev/null
+++ b/app/src/components/PressureLegend.tsx
@@ -0,0 +1,43 @@
+import React from 'react';
+import { Separator } from '@/components/ui/separator';
+import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip';
+
+export const PressureLegend: React.FC = () => {
+  return (
+    <div className="absolute bottom-4 left-4 z-10 flex gap-3 p-3 bg-background/90 backdrop-blur-md border border-border rounded-lg shadow-sm">
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <div className="flex items-center gap-2 cursor-help">
+            <div className="w-3 h-3 rounded-full bg-blue-500 shadow-[0_0_8px_rgba(59,130,246,0.5)]" />
+            <span className="text-xs font-medium text-foreground underline decoration-dashed decoration-muted-foreground underline-offset-4">
+              Pressão (Empuxo)
+            </span>
+          </div>
+        </TooltipTrigger>
+        <TooltipContent side="top">
+          <p className="text-sm">
+            <b>Azul (+)</b>: O vento está "empurrando" a superfície para dentro.
+          </p>
+        </TooltipContent>
+      </Tooltip>
+
+      <Separator orientation="vertical" className="h-4" />
+
+      <Tooltip>
+        <TooltipTrigger asChild>
+          <div className="flex items-center gap-2 cursor-help">
+            <div className="w-3 h-3 rounded-full bg-red-500 shadow-[0_0_8px_rgba(239,68,68,0.5)]" />
+            <span className="text-xs font-medium text-foreground underline decoration-dashed decoration-muted-foreground underline-offset-4">
+              Sucção (Arrasto)
+            </span>
+          </div>
+        </TooltipTrigger>
+        <TooltipContent side="top">
+          <p className="text-sm">
+            <b>Vermelho (-)</b>: O vento está "puxando" a superfície para fora.
+          </p>
+        </TooltipContent>
+      </Tooltip>
+    </div>
+  );
+};
diff --git a/app/src/pages/CylinderModule.tsx b/app/src/pages/CylinderModule.tsx
index 4619ce6..a068e7e 100644
--- a/app/src/pages/CylinderModule.tsx
+++ b/app/src/pages/CylinderModule.tsx
@@ -11,6 +11,7 @@ import Cylinder3DViewer from '@/components/three/Cylinder3D';
 import SceneCapturePanel from '../components/SceneCapturePanel';
 import ExportMenu from '../components/ExportMenu';
 import { EducationalManual } from '@/components/EducationalManual';
+import { PressureLegend } from '@/components/PressureLegend';
 import { exportGenericToPDF, type GenericPDFSection } from '../lib/export-generic-pdf';
 
 const CylinderModule: React.FC = () => {
@@ -146,6 +147,7 @@ const CylinderModule: React.FC = () => {
         <div className="absolute top-4 right-4 z-10">
           <EducationalManual type="cylinder" params={{ surface, endType, cpi: result.cpi }} />
         </div>
+        <PressureLegend />
         <div className="w-full h-full bg-muted/20">
           <Cylinder3DViewer
             diameter={diameter}
diff --git a/app/src/pages/DomeModule.tsx b/app/src/pages/DomeModule.tsx
index 2d96b21..ed3f136 100644
--- a/app/src/pages/DomeModule.tsx
+++ b/app/src/pages/DomeModule.tsx
@@ -11,6 +11,7 @@ import Dome3DViewer from '@/components/three/Dome3D';
 import SceneCapturePanel from '../components/SceneCapturePanel';
 import ExportMenu from '../components/ExportMenu';
 import { EducationalManual } from '@/components/EducationalManual';
+import { PressureLegend } from '@/components/PressureLegend';
 import { exportGenericToPDF, type GenericPDFSection } from '../lib/export-generic-pdf';
 
 const DomeModule: React.FC = () => {
@@ -124,6 +125,7 @@ const DomeModule: React.FC = () => {
         <div className="absolute top-4 right-4 z-10">
           <EducationalManual type="dome" params={{ rise, diameter, cpi }} />
         </div>
+        <PressureLegend />
         <div className="w-full h-full bg-muted/20">
           <Dome3DViewer
             diameter={diameter}
diff --git a/app/src/pages/GalpaoModule.tsx b/app/src/pages/GalpaoModule.tsx
index d8a8042..fbb102e 100644
--- a/app/src/pages/GalpaoModule.tsx
+++ b/app/src/pages/GalpaoModule.tsx
@@ -14,6 +14,7 @@ import { Separator } from '@/components/ui/separator';
 import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip';
 import ExportMenu from '../components/ExportMenu';
 import { EducationalManual } from '@/components/EducationalManual';
+import { PressureLegend } from '@/components/PressureLegend';
 
 const GalpaoModule: React.FC = () => {
   const {
@@ -150,17 +151,7 @@ const GalpaoModule: React.FC = () => {
           </div>
         </div>
 
-        <div className="absolute bottom-4 left-4 z-10 flex gap-3 p-3 bg-background/90 backdrop-blur-md border border-border rounded-lg shadow-sm">
-          <div className="flex items-center gap-2">
-            <div className="w-3 h-3 rounded-full bg-blue-500 shadow-[0_0_8px_rgba(59,130,246,0.5)]" />
-            <span className="text-xs font-medium text-foreground">Pressão (Empuxo)</span>
-          </div>
-          <Separator orientation="vertical" className="h-4" />
-          <div className="flex items-center gap-2">
-            <div className="w-3 h-3 rounded-full bg-red-500 shadow-[0_0_8px_rgba(239,68,68,0.5)]" />
-            <span className="text-xs font-medium text-foreground">Sucção (Arrasto)</span>
-          </div>
-        </div>
+        <PressureLegend />
 
         <div className="w-full h-full cursor-grab active:cursor-grabbing bg-muted/20">
           <Warehouse3DViewer />
diff --git a/app/src/pages/IsolatedRoofModule.tsx b/app/src/pages/IsolatedRoofModule.tsx
index 5cd8c99..497c4b8 100644
--- a/app/src/pages/IsolatedRoofModule.tsx
+++ b/app/src/pages/IsolatedRoofModule.tsx
@@ -10,6 +10,7 @@ import IsolatedRoof3DViewer from '@/components/three/IsolatedRoof3D';
 import SceneCapturePanel from '../components/SceneCapturePanel';
 import ExportMenu from '../components/ExportMenu';
 import { EducationalManual } from '@/components/EducationalManual';
+import { PressureLegend } from '@/components/PressureLegend';
 import { exportGenericToPDF, type GenericPDFSection } from '../lib/export-generic-pdf';
 
 const IsolatedRoofModule: React.FC = () => {
@@ -168,6 +169,7 @@ const IsolatedRoofModule: React.FC = () => {
         <div className="absolute top-4 right-4 z-10">
           <EducationalManual type="isolated-roof" params={{ theta, type }} />
         </div>
+        <PressureLegend />
         <IsolatedRoof3DViewer
           type={type}
           theta={theta}
diff --git a/app/src/pages/SignModule.tsx b/app/src/pages/SignModule.tsx
index c4a7696..2f2c62f 100644
--- a/app/src/pages/SignModule.tsx
+++ b/app/src/pages/SignModule.tsx
@@ -10,6 +10,7 @@ import Sign3DViewer from '@/components/three/Sign3D';
 import SceneCapturePanel from '../components/SceneCapturePanel';
 import ExportMenu from '../components/ExportMenu';
 import { EducationalManual } from '@/components/EducationalManual';
+import { PressureLegend } from '@/components/PressureLegend';
 import { exportGenericToPDF, type GenericPDFSection } from '../lib/export-generic-pdf';
 
 const SignModule: React.FC = () => {
@@ -122,6 +123,7 @@ const SignModule: React.FC = () => {
         <div className="absolute top-4 right-4 z-10">
           <EducationalManual type="sign" params={{ length, height, alpha, hasEndPlates }} />
         </div>
+        <PressureLegend />
 
         <Sign3DViewer
           length={length}
diff --git a/app/src/pages/VaultModule.tsx b/app/src/pages/VaultModule.tsx
index 1235f9a..8911927 100644
--- a/app/src/pages/VaultModule.tsx
+++ b/app/src/pages/VaultModule.tsx
@@ -10,6 +10,7 @@ import Vault3DViewer from '@/components/three/Vault3D';
 import SceneCapturePanel from '../components/SceneCapturePanel';
 import ExportMenu from '../components/ExportMenu';
 import { EducationalManual } from '@/components/EducationalManual';
+import { PressureLegend } from '@/components/PressureLegend';
 import { exportGenericToPDF, type GenericPDFSection } from '../lib/export-generic-pdf';
 
 const VaultModule: React.FC = () => {
@@ -130,6 +131,7 @@ const VaultModule: React.FC = () => {
         <div className="absolute top-4 right-4 z-10">
           <EducationalManual type="vault" params={{ rise, span, regime, localCpi }} />
         </div>
+        <PressureLegend />
         <div className="w-full h-full bg-muted/20">
           <Vault3DViewer span={span} length={length} rise={rise} cpi={localCpi} cpeProfile={{ ...result.windPerpendicular }} />
         </div>