diff --git a/components/User/ResponsiveDrawer.tsx b/components/User/ResponsiveDrawer.tsx
new file mode 100644
index 0000000..f7e9783
--- /dev/null
+++ b/components/User/ResponsiveDrawer.tsx
@@ -0,0 +1,38 @@
+import { Drawer, useMediaQuery, useTheme } from '@mui/material';
+import { FC, PropsWithChildren } from 'react';
+
+const DESKTOP_DRAWER_STYLES = {
+  position: 'sticky',
+  top: '5rem',
+  height: 'calc(100vh - 5rem)',
+  border: 'none',
+  boxShadow: 'none',
+} as const;
+
+export interface ResponsiveDrawerProps extends PropsWithChildren {
+  open: boolean;
+  onClose: () => void;
+}
+
+export const ResponsiveDrawer: FC<ResponsiveDrawerProps> = ({ open, onClose, children }) => {
+  const theme = useTheme();
+  const isMobile = useMediaQuery(theme.breakpoints.down('md'));
+
+  return (
+    <Drawer
+      anchor="left"
+      open={isMobile ? open : true}
+      variant={isMobile ? 'temporary' : 'permanent'}
+      onClose={onClose}
+      sx={{
+        display: { xs: isMobile ? 'block' : 'none', md: isMobile ? 'none' : 'block' },
+        '& .MuiDrawer-paper': {
+          width: 250,
+          ...(isMobile ? {} : DESKTOP_DRAWER_STYLES),
+        },
+      }}
+    >
+      {children}
+    </Drawer>
+  );
+};
diff --git a/components/User/SessionBox.tsx b/components/User/SessionBox.tsx
index 5f89820..513fd65 100644
--- a/components/User/SessionBox.tsx
+++ b/components/User/SessionBox.tsx
@@ -1,12 +1,21 @@
 import { User } from '@idea2app/data-server';
-import { Box, List, ListItem, ListItemButton, ListItemText, Modal } from '@mui/material';
+import {
+  Box,
+  IconButton,
+  List,
+  ListItem,
+  ListItemButton,
+  ListItemText,
+  Modal,
+} from '@mui/material';
 import { observable } from 'mobx';
 import { observer } from 'mobx-react';
 import Link from 'next/link';
 import { JWTProps } from 'next-ssr-middleware';
 import { Component, HTMLAttributes, JSX } from 'react';
 
-import { PageHead } from '../PageHead';
+import { SymbolIcon } from '../Icon';
+import { ResponsiveDrawer } from './ResponsiveDrawer';
 import { SessionForm } from './SessionForm';
 
 export type MenuItem = Pick<JSX.IntrinsicElements['a'], 'href' | 'title'>;
@@ -21,46 +30,69 @@ export class SessionBox extends Component<SessionBoxProps> {
   @observable
   accessor modalShown = false;
 
+  @observable
+  accessor drawerOpen = false;
+
   componentDidMount() {
     this.modalShown = !this.props.jwtPayload;
   }
 
+  toggleDrawer = () => (this.drawerOpen = !this.drawerOpen);
+
+  closeDrawer = () => (this.drawerOpen = false);
+
+  renderMenuItems() {
+    const { path, menu = [] } = this.props;
+
+    return (
+      <List component="nav" className="px-2">
+        {menu.map(({ href, title }) => (
+          <ListItem key={href} disablePadding>
+            <ListItemButton
+              component={Link}
+              href={href || '#'}
+              selected={path?.split('?')[0].startsWith(href || '')}
+              className="rounded"
+              onClick={this.closeDrawer}
+            >
+              <ListItemText primary={title} />
+            </ListItemButton>
+          </ListItem>
+        ))}
+      </List>
+    );
+  }
+
   render() {
-    const { className = '', title, children, path, menu = [], jwtPayload, ...props } = this.props;
+    const { className = '', children, jwtPayload, ...props } = this.props;
 
     return (
-      <div className={`flex ${className}`} {...props}>
-        <div>
-          <List
-            component="nav"
-            className="sticky-top flex-col px-3"
-            style={{ top: '5rem', minWidth: '200px' }}
+      <div className={`flex flex-col md:flex-row ${className}`} {...props}>
+        {/* Mobile Menu Button */}
+        <div className="sticky top-0 z-[1100] flex border-b p-1 md:hidden bg-background-paper border-divider">
+          <IconButton
+            edge="start"
+            color="inherit"
+            aria-label="menu"
+            onClick={this.toggleDrawer}
           >
-            {menu.map(({ href, title }) => (
-              <ListItem key={href} disablePadding>
-                <ListItemButton
-                  component={Link}
-                  href={href || '#'}
-                  selected={path?.split('?')[0].startsWith(href || '')}
-                  className="rounded"
-                >
-                  <ListItemText primary={title} />
-                </ListItemButton>
-              </ListItem>
-            ))}
-          </List>
+            <SymbolIcon name="menu" />
+          </IconButton>
         </div>
-        <main className="flex-1 pb-3">
+
+        {/* Unified Responsive Drawer */}
+        <ResponsiveDrawer open={this.drawerOpen} onClose={this.closeDrawer}>
+          <div className="w-[250px]">{this.renderMenuItems()}</div>
+        </ResponsiveDrawer>
+
+        {/* Main Content */}
+        <main className="flex-1 px-2 pb-3 sm:px-3">
           {children}
 
           <Modal open={this.modalShown}>
             <Box
-              className="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2 rounded p-4 shadow-lg"
-              sx={{
-                width: '400px',
-                maxWidth: '90vw',
-                bgcolor: 'background.paper',
-              }}
+              className="absolute left-1/2 top-1/2 w-[90vw] -translate-x-1/2 -translate-y-1/2 rounded p-4 shadow-2xl sm:w-[400px] bg-background-paper"
+              sx={{ boxShadow: 24 }}
             >
               <SessionForm onSignIn={() => (this.modalShown = false)} />
             </Box>
diff --git a/next-env.d.ts b/next-env.d.ts
index d3956e1..7996d35 100644
--- a/next-env.d.ts
+++ b/next-env.d.ts
@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import './.next/dev/types/routes.d.ts';
+import "./.next/dev/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/pages/api-reference/config/typescript for more information.
diff --git a/pages/dashboard/index.tsx b/pages/dashboard/index.tsx
index 283c12a..e6db4e8 100644
--- a/pages/dashboard/index.tsx
+++ b/pages/dashboard/index.tsx
@@ -37,14 +37,18 @@ const DashboardPage: FC<DashboardPageProps> = observer(({ route, jwtPayload }) =
 
   return (
     <SessionBox title={t('backend_management')} path={route.resolvedUrl} {...{ menu, jwtPayload }}>
-      <Container maxWidth="lg" className="py-8">
-        <Typography variant="h3" component="h1" gutterBottom>
+      <Container maxWidth="lg" className="py-3 md:py-8">
+        <Typography
+          variant="h3"
+          component="h1"
+          gutterBottom
+          className="text-[1.75rem] sm:text-[2.5rem] md:text-[3rem]"
+        >
           {t('welcome_use')}
         </Typography>
 
-        <Box
-          component="form"
-          sx={{ display: 'flex', gap: 2, alignItems: 'center', mt: 2, mb: 4 }}
+        <form
+          className="mb-4 mt-2 flex flex-col items-stretch gap-2 sm:flex-row sm:items-center"
           onSubmit={handleCreateProject}
         >
           <TextField
@@ -56,16 +60,20 @@ const DashboardPage: FC<DashboardPageProps> = observer(({ route, jwtPayload }) =
             defaultValue={route.query.name}
           />
           <Button
-            className="text-nowrap"
-            type="submit"
+            className="min-w-full whitespace-nowrap sm:min-w-0"
             variant="contained"
+            type="submit"
             disabled={projectStore.uploading > 0}
           >
             {t('create_new_project')}
           </Button>
-        </Box>
+        </form>
 
-        <Typography variant="h5" component="h2" sx={{ mt: 4, mb: 3 }}>
+        <Typography
+          variant="h5"
+          component="h2"
+          className="mb-3 mt-4 text-[1.25rem] sm:text-[1.5rem]"
+        >
           {t('recent_projects')}
         </Typography>
 
@@ -76,16 +84,16 @@ const DashboardPage: FC<DashboardPageProps> = observer(({ route, jwtPayload }) =
             jwtPayload?.roles.includes(2 as UserRole.Client) ? { createdBy: jwtPayload.id } : {}
           }
           renderList={allItems => (
-            <Grid container spacing={3}>
+            <Grid container spacing={{ xs: 2, sm: 3 }}>
               {allItems[0] ? (
                 allItems.map(project => (
-                  <Grid key={project.id} size={{ xs: 12, md: 4 }}>
+                  <Grid key={project.id} size={{ xs: 12, sm: 6, md: 4 }}>
                     <ProjectCard {...project} />
                   </Grid>
                 ))
               ) : (
                 <Grid size={{ xs: 12 }}>
-                  <Typography color="textSecondary" sx={{ textAlign: 'center', mt: 4 }}>
+                  <Typography color="textSecondary" className="mt-4 text-center">
                     {t('no_project_data')}
                   </Typography>
                 </Grid>
diff --git a/pages/dashboard/project/[id].tsx b/pages/dashboard/project/[id].tsx
index 0e42cd2..e56f235 100644
--- a/pages/dashboard/project/[id].tsx
+++ b/pages/dashboard/project/[id].tsx
@@ -80,44 +80,35 @@ export default class ProjectEvaluationPage extends ObservedComponent<
     const name = isBot ? `${t('ai_assistant')} 🤖` : createdBy?.name || 'User';
 
     return (
-      <Box
+      <div
         key={id}
         id={index + 1 === length ? 'last-message' : undefined}
-        sx={{
-          display: 'flex',
-          justifyContent: isBot ? 'flex-start' : 'flex-end',
-          mb: 2,
-          width: '100%',
-        }}
+        className={`mb-2 flex w-full ${isBot ? 'justify-start' : 'justify-end'}`}
       >
-        <Box
-          sx={{
-            display: 'flex',
-            flexDirection: isBot ? 'row' : 'row-reverse',
-            alignItems: 'flex-start',
-            maxWidth: '80%',
-            gap: 1,
-          }}
+        <div
+          className={`flex items-start gap-1 max-w-[95%] sm:max-w-[80%] ${isBot ? 'flex-row' : 'flex-row-reverse'}`}
         >
-          <Avatar src={avatarSrc} alt={name} sx={{ width: 32, height: 32 }} />
+          <Avatar src={avatarSrc} alt={name} className="h-7 w-7 sm:h-8 sm:w-8" />
           <Paper
             elevation={1}
+            className="rounded-[16px_16px_4px_16px] p-1.5 sm:p-2 bg-primary-light text-primary-contrast"
             sx={{
-              p: 2,
               backgroundColor: 'primary.light',
               color: 'primary.contrastText',
-              borderRadius: '16px 16px 4px 16px',
             }}
           >
-            <Typography variant="caption" display="block" sx={{ mb: 0.5, opacity: 0.8 }}>
+            <Typography
+              variant="caption"
+              display="block"
+              className="mb-0.5 text-[0.7rem] opacity-80 sm:text-[0.75rem]"
+            >
               {name}
             </Typography>
 
             {content && (
               <Typography
-                className="prose"
+                className="prose mb-1 text-[0.875rem] sm:text-base"
                 variant="body2"
-                sx={{ mb: 1 }}
                 dangerouslySetInnerHTML={{ __html: marked(content) }}
               />
             )}
@@ -130,13 +121,13 @@ export default class ProjectEvaluationPage extends ObservedComponent<
               />
             )}
             {createdAt && (
-              <Typography variant="caption" sx={{ opacity: 0.6, fontSize: '0.75rem' }}>
+              <Typography variant="caption" className="text-[0.65rem] opacity-60 sm:text-[0.75rem]">
                 {new Date(createdAt).toLocaleTimeString()}
               </Typography>
             )}
           </Paper>
-        </Box>
-      </Box>
+        </div>
+      </div>
     );
   };
 
@@ -154,31 +145,36 @@ export default class ProjectEvaluationPage extends ObservedComponent<
 
         <Container
           maxWidth="md"
-          sx={{ height: '85vh', display: 'flex', flexDirection: 'column', gap: '1rem' }}
+          className="flex h-[calc(100vh-120px)] flex-col gap-2 px-0 sm:gap-4 sm:px-2 md:h-[85vh]"
         >
-          <h1 className="mt-20 text-3xl font-bold">{title}</h1>
+          <Typography
+            component="h1"
+            className="mb-1 mt-2 px-2 text-2xl font-bold sm:mb-2 sm:mt-4 sm:px-0 sm:text-3xl md:mt-20 md:text-5xl"
+          >
+            {title}
+          </Typography>
           {/* Chat Messages Area */}
-          <Box sx={{ flex: 1, overflow: 'auto', mb: 2 }}>
+          <div className="mb-2 flex-1 overflow-auto">
             <ScrollList
               translator={i18n}
               store={messageStore}
               filter={{ project: projectId }}
               renderList={allItems => (
-                <Box sx={{ height: '100%', overflowY: 'auto', p: 1 }}>
+                <div className="h-full overflow-y-auto p-1 sm:p-2">
                   {allItems.map(this.renderChatMessage)}
-                </Box>
+                </div>
               )}
             />
-          </Box>
+          </div>
 
           {/* Message Input Form */}
           <Paper
             component="form"
             elevation={1}
-            sx={{ p: 2, mt: 'auto' }}
+            className="mx-1 mb-1 mt-auto p-1.5 sm:mx-0 sm:mb-0 sm:p-2"
             onSubmit={this.handleMessageSubmit}
           >
-            <Box sx={{ display: 'flex', gap: 1, alignItems: 'flex-end' }}>
+            <div className="flex flex-col items-end gap-1 sm:flex-row">
               <TextField
                 name="content"
                 placeholder={t('type_your_message')}
@@ -191,14 +187,13 @@ export default class ProjectEvaluationPage extends ObservedComponent<
               />
               <Button
                 type="submit"
-                className="text-nowrap"
                 variant="contained"
-                sx={{ minWidth: 'auto', px: 2 }}
+                className="min-w-full whitespace-nowrap px-2 sm:min-w-0"
                 disabled={messageStore.uploading > 0}
               >
                 {t('send')}
               </Button>
-            </Box>
+            </div>
           </Paper>
         </Container>
       </SessionBox>