diff --git a/src/components/Dialog/ResponsiveDialog.tsx b/src/components/Dialog/ResponsiveDialog.tsx
index 83959c0..0fc1eb2 100644
--- a/src/components/Dialog/ResponsiveDialog.tsx
+++ b/src/components/Dialog/ResponsiveDialog.tsx
@@ -10,7 +10,9 @@ import {
   IconButton,
   Stack,
   SxProps,
-  Theme
+  Theme,
+  useMediaQuery,
+  useTheme
 } from '@linagora/twake-mui'
 import ArrowBackIcon from '@mui/icons-material/ArrowBack'
 import CloseIcon from '@mui/icons-material/Close'
@@ -110,35 +112,42 @@ function ResponsiveDialog({
   actionsJustifyContent = 'flex-end',
   sx,
   ...otherDialogProps
-}: ResponsiveDialogProps) {
+}: ResponsiveDialogProps): JSX.Element {
+  const theme = useTheme()
+  const isMobile = useMediaQuery(theme.breakpoints.down('sm'))
+
   const isInIframe = useMemo(() => new CozyBridge().isInIframe(), [])
-  const baseSx: SxProps<Theme> = {
-    '& .MuiBackdrop-root': {
-      backgroundColor: 'rgba(0, 0, 0, 0.1)',
-      opacity: isExpanded ? '0 !important' : undefined,
-      transition: isExpanded ? 'none !important' : undefined,
-      pointerEvents: isExpanded ? 'none' : undefined
-    },
-    '& .MuiDialog-paper': {
-      maxWidth: isExpanded ? '100%' : normalMaxWidth,
-      width: '100%',
-      height: isExpanded
-        ? `calc(100vh - ${isInIframe ? '0px' : headerHeight})`
-        : undefined,
-      maxHeight: isExpanded && isInIframe ? '100%' : undefined,
-      margin: isExpanded ? `${isInIframe ? 0 : headerHeight} 0 0 0` : '32px',
-      boxShadow: isExpanded ? 'none !important' : undefined,
-      transition: isExpanded ? 'none !important' : undefined,
-      zIndex: isExpanded ? 1200 : 1300
-    },
-    '& .MuiDialogActions-root .MuiBox-root': {
-      maxWidth: isExpanded ? expandedContentMaxWidth : undefined,
-      margin: isExpanded ? '0 auto' : undefined,
-      padding: '0',
-      width: isExpanded ? '100%' : undefined,
-      justifyContent: isExpanded ? 'flex-end' : undefined
-    }
-  }
+
+  const baseSx: SxProps<Theme> = isMobile
+    ? undefined
+    : {
+        '& .MuiBackdrop-root': {
+          opacity: isExpanded ? '0 !important' : undefined,
+          transition: isExpanded ? 'none !important' : undefined,
+          pointerEvents: isExpanded ? 'none' : undefined
+        },
+        '& .MuiDialog-paper': {
+          maxWidth: isExpanded ? '100%' : normalMaxWidth,
+          width: '100%',
+          height: isExpanded
+            ? `calc(100vh - ${isInIframe ? '0px' : headerHeight})`
+            : undefined,
+          maxHeight: isExpanded && isInIframe ? '100%' : undefined,
+          margin: isExpanded
+            ? `${isInIframe ? 0 : headerHeight} 0 0 0`
+            : '32px',
+          boxShadow: isExpanded ? 'none !important' : undefined,
+          transition: isExpanded ? 'none !important' : undefined,
+          zIndex: isExpanded ? 1200 : 1300
+        },
+        '& .MuiDialogActions-root .MuiBox-root': {
+          maxWidth: isExpanded ? expandedContentMaxWidth : undefined,
+          margin: isExpanded ? '0 auto' : undefined,
+          padding: '0',
+          width: isExpanded ? '100%' : undefined,
+          justifyContent: isExpanded ? 'flex-end' : undefined
+        }
+      }
 
   const baseContentSx: SxProps<Theme> = {
     width: '100%'
@@ -161,7 +170,7 @@ function ResponsiveDialog({
   const handleClose = (
     event: unknown,
     reason: 'backdropClick' | 'escapeKeyDown'
-  ) => {
+  ): void => {
     if (isExpanded && reason === 'backdropClick') {
       return
     }
@@ -175,6 +184,7 @@ function ResponsiveDialog({
       open={open}
       onClose={handleClose}
       maxWidth={false}
+      fullScreen={isMobile && open}
       fullWidth
       transitionDuration={isExpanded ? 0 : 300}
       sx={[baseSx, ...(Array.isArray(sx) ? sx : [sx])]}
@@ -238,7 +248,7 @@ function ResponsiveDialog({
         <DialogActions
           sx={{
             borderTop: actionsBorderTop
-              ? theme => `1px solid ${theme.palette.divider}`
+              ? (theme: Theme): string => `1px solid ${theme.palette.divider}`
               : undefined,
             justifyContent: actionsJustifyContent
           }}
diff --git a/src/components/Event/InfoRow.tsx b/src/components/Event/InfoRow.tsx
index 7985b18..db44f35 100644
--- a/src/components/Event/InfoRow.tsx
+++ b/src/components/Event/InfoRow.tsx
@@ -1,4 +1,10 @@
-import { Box, Link, Typography } from '@linagora/twake-mui'
+import {
+  Box,
+  Link,
+  Typography,
+  useTheme,
+  useMediaQuery
+} from '@linagora/twake-mui'
 import React from 'react'
 
 type InfoRowProps = {
@@ -12,14 +18,14 @@ type InfoRowProps = {
   flexWrap?: React.CSSProperties['flexWrap']
 }
 
-function detectUrls(text: string) {
+function detectUrls(text: string): JSX.Element[] {
   // Simple regex that captures whole URLs without splitting them apart
   const urlRegex = /(https?:\/\/[^\s]+|www\.[^\s]+)/gi
 
   const parts = []
   let lastIndex = 0
 
-  text.replace(urlRegex, (match, _, offset) => {
+  text.replace(urlRegex, (match, _, offset: number) => {
     // Push the text before the match
     if (lastIndex < offset) {
       parts.push(
@@ -66,10 +72,12 @@ export function InfoRow({
   style,
   alignItems = 'center',
   flexWrap = 'nowrap'
-}: InfoRowProps) {
+}: InfoRowProps): JSX.Element {
+  const theme = useTheme()
+  const isMobile = useMediaQuery(theme.breakpoints.down('sm'))
   return (
     <Box
-      style={{
+      sx={{
         display: 'flex',
         alignItems,
         gap: 1,
@@ -87,8 +95,8 @@ export function InfoRow({
           sx={{
             wordBreak: 'break-word',
             whiteSpace: 'pre-line',
-            maxHeight: '33vh',
-            overflowY: 'auto',
+            maxHeight: isMobile ? 'none' : '33vh',
+            overflowY: isMobile ? undefined : 'auto',
             width: '100%',
             ...style
           }}
diff --git a/src/components/Event/components/DateTimeFields.tsx b/src/components/Event/components/DateTimeFields.tsx
index 071d3b1..56f44c1 100644
--- a/src/components/Event/components/DateTimeFields.tsx
+++ b/src/components/Event/components/DateTimeFields.tsx
@@ -1,8 +1,15 @@
-import { Box, TextFieldProps, Typography } from '@linagora/twake-mui'
+import {
+  Box,
+  TextFieldProps,
+  Typography,
+  useMediaQuery,
+  useTheme
+} from '@linagora/twake-mui'
 import { AdapterDayjs } from '@mui/x-date-pickers/AdapterDayjs'
 import {
   DatePicker,
-  DatePickerFieldProps
+  DatePickerFieldProps,
+  DatePickerSlotProps
 } from '@mui/x-date-pickers/DatePicker'
 import { PickerValue } from '@mui/x-date-pickers/internals'
 import { LocalizationProvider } from '@mui/x-date-pickers/LocalizationProvider'
@@ -88,8 +95,10 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
   onStartTimeChange,
   onEndDateChange,
   onEndTimeChange
-}) => {
+}): JSX.Element => {
   const { t, lang } = useI18n()
+  const theme = useTheme()
+  const isMobile = useMediaQuery(theme.breakpoints.down('sm'))
 
   const initialDurationRef = React.useRef<number | null>(null)
   const isUserActionRef = React.useRef(false)
@@ -139,7 +148,7 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
     ? t('dateTimeFields.date')
     : t('dateTimeFields.startDate')
 
-  const handleStartDateChange = (value: PickerValue) => {
+  const handleStartDateChange = (value: PickerValue): void => {
     if (!value || !value.isValid()) return
 
     isUserActionRef.current = true
@@ -169,7 +178,7 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
     }
   }
 
-  const handleStartTimeChange = (value: PickerValue) => {
+  const handleStartTimeChange = (value: PickerValue): void => {
     if (!value || !value.isValid()) return
 
     isUserActionRef.current = true
@@ -196,7 +205,7 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
     }
   }
 
-  const handleEndDateChange = (value: PickerValue) => {
+  const handleEndDateChange = (value: PickerValue): void => {
     if (!value || !value.isValid()) return
 
     isUserActionRef.current = true
@@ -233,7 +242,7 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
     onEndDateChange(newDateStr)
   }
 
-  const handleEndTimeChange = (value: PickerValue) => {
+  const handleEndTimeChange = (value: PickerValue): void => {
     if (!value || !value.isValid()) return
 
     isUserActionRef.current = true
@@ -270,7 +279,7 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
     testId: string,
     hasError = false,
     testLabel?: string
-  ) => ({
+  ): Partial<DatePickerSlotProps<true>> => ({
     textField: {
       size: 'small' as const,
       margin: 'dense' as const,
@@ -360,7 +369,12 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
       >
         {isExpanded || shouldShowFullFieldsInNormal ? (
           <>
-            <Box display="flex" gap={1} flexDirection="row" alignItems="center">
+            <Box
+              display="flex"
+              gap={1}
+              flexDirection={isMobile ? 'column' : 'row'}
+              alignItems="center"
+            >
               <Box sx={{ maxWidth: '300px', width: '48%' }}>
                 <DatePicker
                   format={LONG_DATE_FORMAT}
@@ -407,7 +421,12 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
                 </Box>
               )}
             </Box>
-            <Box display="flex" gap={1} flexDirection="row" alignItems="center">
+            <Box
+              display="flex"
+              gap={1}
+              flexDirection={isMobile ? 'column' : 'row'}
+              alignItems={isMobile ? 'stretch' : 'center'}
+            >
               <Box sx={{ maxWidth: '300px', width: '48%' }}>
                 <DatePicker
                   format={LONG_DATE_FORMAT}
@@ -456,7 +475,12 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
             </Box>
           </>
         ) : shouldShowEndDateNormal ? (
-          <Box display="flex" gap={1} flexDirection="row" alignItems="center">
+          <Box
+            display="flex"
+            gap={1}
+            flexDirection={isMobile ? 'column' : 'row'}
+            alignItems={isMobile ? 'stretch' : 'center'}
+          >
             <Box sx={{ maxWidth: '300px', width: '48%' }}>
               <DatePicker
                 format={LONG_DATE_FORMAT}
@@ -501,8 +525,15 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
             </Box>
           </Box>
         ) : (
-          <Box display="flex" gap={1} flexDirection="row" alignItems="center">
-            <Box sx={{ maxWidth: '300px', width: '48%' }}>
+          <Box
+            display="flex"
+            gap={1}
+            flexDirection={isMobile ? 'column' : 'row'}
+            alignItems={isMobile ? 'stretch' : 'center'}
+          >
+            <Box
+              sx={isMobile ? undefined : { maxWidth: '300px', width: '48%' }}
+            >
               <DatePicker
                 format={LONG_DATE_FORMAT}
                 value={startDateValue}
@@ -519,62 +550,64 @@ export const DateTimeFields: React.FC<DateTimeFieldsProps> = ({
                 }}
               />
             </Box>
-            <Box sx={{ maxWidth: '110px' }}>
-              <TimePicker
-                ampm={false}
-                value={startTimeValue}
-                onChange={handleStartTimeChange}
-                disabled={allday}
-                thresholdToRenderTimeInASingleColumn={48}
-                timeSteps={{ minutes: 30 }}
-                slots={{
-                  field: EditableTimeField,
-                  actionBar: () => null
-                }}
-                slotProps={{
-                  openPickerButton: { sx: { display: 'none' } },
-                  popper: { sx: timePickerPopperSx },
-                  field: getTimeFieldSlotProps(
-                    'start-time-input',
-                    false,
-                    t('dateTimeFields.startTime')
-                  )
-                }}
-              />
-            </Box>
-            {!allday && (
-              <Typography
-                sx={{
-                  alignSelf: 'center',
-                  mx: 0.5,
-                  mt: 0.5
-                }}
-              >
-                -
-              </Typography>
-            )}
-            <Box sx={{ maxWidth: '110px' }}>
-              <TimePicker
-                ampm={false}
-                value={endTimeValue}
-                onChange={handleEndTimeChange}
-                disabled={allday}
-                thresholdToRenderTimeInASingleColumn={48}
-                timeSteps={{ minutes: 30 }}
-                slots={{
-                  field: EditableTimeField,
-                  actionBar: () => null
-                }}
-                slotProps={{
-                  openPickerButton: { sx: { display: 'none' } },
-                  popper: { sx: timePickerPopperSx },
-                  field: getTimeFieldSlotProps(
-                    'end-time-input',
-                    !!validation.errors.dateTime,
-                    t('dateTimeFields.endTime')
-                  )
-                }}
-              />
+            <Box display="flex" gap={1} flexDirection="row">
+              <Box sx={{ width: isMobile ? '100%' : '110px' }}>
+                <TimePicker
+                  ampm={false}
+                  value={startTimeValue}
+                  onChange={handleStartTimeChange}
+                  disabled={allday}
+                  thresholdToRenderTimeInASingleColumn={48}
+                  timeSteps={{ minutes: 30 }}
+                  slots={{
+                    field: EditableTimeField,
+                    actionBar: () => null
+                  }}
+                  slotProps={{
+                    openPickerButton: { sx: { display: 'none' } },
+                    popper: { sx: timePickerPopperSx },
+                    field: getTimeFieldSlotProps(
+                      'start-time-input',
+                      false,
+                      t('dateTimeFields.startTime')
+                    )
+                  }}
+                />
+              </Box>
+              {!allday && (
+                <Typography
+                  sx={{
+                    alignSelf: 'center',
+                    mx: 0.5,
+                    mt: 0.5
+                  }}
+                >
+                  -
+                </Typography>
+              )}
+              <Box sx={{ width: isMobile ? '100%' : '110px' }}>
+                <TimePicker
+                  ampm={false}
+                  value={endTimeValue}
+                  onChange={handleEndTimeChange}
+                  disabled={allday}
+                  thresholdToRenderTimeInASingleColumn={48}
+                  timeSteps={{ minutes: 30 }}
+                  slots={{
+                    field: EditableTimeField,
+                    actionBar: () => null
+                  }}
+                  slotProps={{
+                    openPickerButton: { sx: { display: 'none' } },
+                    popper: { sx: timePickerPopperSx },
+                    field: getTimeFieldSlotProps(
+                      'end-time-input',
+                      !!validation.errors.dateTime,
+                      t('dateTimeFields.endTime')
+                    )
+                  }}
+                />
+              </Box>
             </Box>
           </Box>
         )}
diff --git a/src/features/Events/AttendanceValidation/AttendanceValidation.tsx b/src/features/Events/AttendanceValidation/AttendanceValidation.tsx
index b94779b..20947d1 100644
--- a/src/features/Events/AttendanceValidation/AttendanceValidation.tsx
+++ b/src/features/Events/AttendanceValidation/AttendanceValidation.tsx
@@ -1,6 +1,6 @@
 import { PartStat } from '@/features/User/models/attendee'
 import { userData } from '@/features/User/userDataTypes'
-import { Box, Typography } from '@linagora/twake-mui'
+import { Box, Typography, useTheme, useMediaQuery } from '@linagora/twake-mui'
 import { Dispatch, SetStateAction, useState } from 'react'
 import { useI18n } from 'twake-i18n'
 import { ContextualizedEvent } from '../EventsTypes'
@@ -21,8 +21,10 @@ export function AttendanceValidation({
   user,
   setAfterChoiceFunc,
   setOpenEditModePopup
-}: AttendanceValidationProps) {
+}: AttendanceValidationProps): JSX.Element | null {
   const { currentUserAttendee, isOwn, calendar } = contextualizedEvent
+  const theme = useTheme()
+  const isMobile = useMediaQuery(theme.breakpoints.down('sm'))
   const { t } = useI18n()
   const [isLoading, setIsLoading] = useState(false)
   const [loadingValue, setLoadingValue] = useState<PartStat | null>(null)
@@ -50,7 +52,7 @@ export function AttendanceValidation({
     return null
   }
 
-  const handleLoadingChange = (loading: boolean, value?: PartStat) => {
+  const handleLoadingChange = (loading: boolean, value?: PartStat): void => {
     setIsLoading(loading)
     setLoadingValue(loading && value ? value : null)
   }
@@ -66,16 +68,34 @@ export function AttendanceValidation({
   }
 
   return (
-    <>
-      <Typography variant="body2" sx={{ marginRight: 1 }}>
-        {calendar.owner?.resource
-          ? t('eventPreview.authorizeQuestion')
-          : t('eventPreview.attendingQuestion')}
-      </Typography>
-      <Box display="flex" gap={1} mx={1} alignItems="center">
-        <RSVPButton rsvpValue="ACCEPTED" {...commonButtonProps} />
-        <RSVPButton rsvpValue="DECLINED" {...commonButtonProps} />
-        <RSVPButton rsvpValue="TENTATIVE" {...commonButtonProps} />
+    <Box
+      sx={{
+        display: 'flex',
+        flexDirection: isMobile ? 'column' : 'row',
+        gap: isMobile ? '16px' : undefined,
+        alignItems: 'center'
+      }}
+    >
+      <Box
+        sx={{
+          display: 'flex',
+          flexDirection: 'row',
+          alignItems: 'center',
+          flexWrap: 'wrap'
+        }}
+      >
+        {!isMobile && (
+          <Typography variant="body2" sx={{ marginRight: 1 }}>
+            {calendar.owner?.resource
+              ? t('eventPreview.authorizeQuestion')
+              : t('eventPreview.attendingQuestion')}
+          </Typography>
+        )}
+        <Box display="flex" gap={1} mx={1} alignItems="center">
+          <RSVPButton rsvpValue="ACCEPTED" {...commonButtonProps} />
+          <RSVPButton rsvpValue="DECLINED" {...commonButtonProps} />
+          <RSVPButton rsvpValue="TENTATIVE" {...commonButtonProps} />
+        </Box>
       </Box>
       {!contextualizedEvent.isOrganizer && (
         <Typography
@@ -91,6 +111,6 @@ export function AttendanceValidation({
         setOpen={setOpenCounterModal}
         contextualizedEvent={contextualizedEvent}
       />
-    </>
+    </Box>
   )
 }
diff --git a/src/features/Events/AttendanceValidation/EventCounterModal.tsx b/src/features/Events/AttendanceValidation/EventCounterModal.tsx
index 9dd1676..e32efd1 100644
--- a/src/features/Events/AttendanceValidation/EventCounterModal.tsx
+++ b/src/features/Events/AttendanceValidation/EventCounterModal.tsx
@@ -20,7 +20,7 @@ export function EventCounterModal({
   open: boolean
   setOpen: (b: boolean) => void
   contextualizedEvent: ContextualizedEvent
-}) {
+}): JSX.Element {
   const { t } = useI18n()
   const [isSubmitting, setIsSubmitting] = useState(false)
   const [showSuccessToast, setShowSuccessToast] = useState(false)
@@ -56,7 +56,7 @@ export function EventCounterModal({
     errors: { dateTime: '' }
   })
 
-  const handleStartDateChange = (value: string) => {
+  const handleStartDateChange = (value: string): void => {
     setStartDate(value)
     if (value > endDate) {
       setEndDate(value)
@@ -65,18 +65,18 @@ export function EventCounterModal({
     setValidation({ errors: { dateTime: '' } })
   }
 
-  const handleStartTimeChange = (value: string) => {
+  const handleStartTimeChange = (value: string): void => {
     setStartTime(value)
     setValidation({ errors: { dateTime: '' } })
   }
 
-  const handleEndDateChange = (value: string) => {
+  const handleEndDateChange = (value: string): void => {
     setEndDate(value)
     setHasEndDateChanged(true)
     setValidation({ errors: { dateTime: '' } })
   }
 
-  const handleEndTimeChange = (value: string) => {
+  const handleEndTimeChange = (value: string): void => {
     setEndTime(value)
     setValidation({ errors: { dateTime: '' } })
   }
@@ -107,7 +107,7 @@ export function EventCounterModal({
     return true
   }
 
-  const handleSubmit = async () => {
+  const handleSubmit = async (): Promise<void> => {
     if (!validate()) return
     if (
       !contextualizedEvent.currentUserAttendee?.cal_address ||
@@ -163,6 +163,21 @@ export function EventCounterModal({
         open={open}
         onClose={() => setOpen(false)}
         title={t('eventPreview.proposeNewTime')}
+        actions={
+          <Box display="flex" justifyContent="flex-end">
+            <Button variant="text" onClick={() => setOpen(false)}>
+              {t('common.cancel')}
+            </Button>
+            <Button
+              variant="contained"
+              color="primary"
+              onClick={() => void handleSubmit()}
+              disabled={isSubmitting}
+            >
+              {t('eventPreview.sendProposal')}
+            </Button>
+          </Box>
+        }
       >
         {/* Event title */}
         <Box display="flex" alignItems="center" gap={1} mb={2}>
@@ -235,21 +250,6 @@ export function EventCounterModal({
             }}
           />
         </Box>
-
-        {/* Actions */}
-        <Box display="flex" justifyContent="flex-end" gap={2} mt={3}>
-          <Button variant="text" onClick={() => setOpen(false)}>
-            {t('common.cancel')}
-          </Button>
-          <Button
-            variant="contained"
-            color="primary"
-            onClick={handleSubmit}
-            disabled={isSubmitting}
-          >
-            {t('eventPreview.sendProposal')}
-          </Button>
-        </Box>
       </ResponsiveDialog>
     </>
   )
diff --git a/src/features/Events/EventPreview/EventPreviewAttendees.tsx b/src/features/Events/EventPreview/EventPreviewAttendees.tsx
index 6bf4b54..4cd05a7 100644
--- a/src/features/Events/EventPreview/EventPreviewAttendees.tsx
+++ b/src/features/Events/EventPreview/EventPreviewAttendees.tsx
@@ -1,8 +1,9 @@
 import { useAppSelector } from '@/app/hooks'
 import { useAttendeesFreeBusy } from '@/components/Attendees/useFreeBusy'
 import { renderAttendeeBadge } from '@/components/Event/utils/eventUtils'
+import { useScreenSizeDetection } from '@/useScreenSizeDetection'
 import { extractEventBaseUuid } from '@/utils/extractEventBaseUuid'
-import { AvatarGroup, Box, Typography } from '@linagora/twake-mui'
+import { AvatarGroup, Box, Button, Typography } from '@linagora/twake-mui'
 import PeopleAltOutlinedIcon from '@mui/icons-material/PeopleAltOutlined'
 import { alpha, useTheme } from '@mui/material/styles'
 import { useState } from 'react'
@@ -30,17 +31,22 @@ export function EventPreviewAttendees({
   end,
   timezone,
   eventUid
-}: EventPreviewAttendeesProps) {
+}: EventPreviewAttendeesProps): JSX.Element {
   const { t } = useI18n()
   const theme = useTheme()
+  const { isTooSmall: isMobile } = useScreenSizeDetection()
   const infoIconColor = alpha(theme.palette.grey[900], 0.9)
   const infoIconSx = { minWidth: '25px', marginRight: 2, color: infoIconColor }
+  // Icon takes 25px width + 16px (mr: 2) = 41px, use negative margin to align avatars
+  const mobileAvatarOffset = '-42px'
   const userEmail = useAppSelector(state => state.user.userData.email)
   const [showAllAttendees, setShowAllAttendees] = useState(false)
 
   const attendeePreview = makeAttendeePreview(allAttendees, t)
 
-  const toFreeBusyAttendee = (a: userAttendee) => ({
+  const toFreeBusyAttendee = (
+    a: userAttendee
+  ): { email: string; userId: null } => ({
     email: a.cal_address,
     userId: null
   })
@@ -60,7 +66,7 @@ export function EventPreviewAttendees({
     enabled: !!(start && end && showAllAttendees)
   })
 
-  const busyCaption = (a: userAttendee) =>
+  const busyCaption = (a: userAttendee): string | undefined =>
     freeBusyMap[a.cal_address] === 'busy'
       ? a.cal_address === userEmail
         ? t('event.freeBusy.busyCalOwner')
@@ -73,44 +79,100 @@ export function EventPreviewAttendees({
         <Box sx={{ ...infoIconSx, mt: 1 }}>
           <PeopleAltOutlinedIcon />
         </Box>
-        <Box style={{ marginBottom: 1, display: 'flex', flexDirection: 'row' }}>
-          <Box sx={{ marginRight: 2 }}>
-            <Typography>
-              {t('eventPreview.guests', { count: allAttendees.length })}
-            </Typography>
-            <Typography sx={{ fontSize: '13px', color: 'text.secondary' }}>
-              {attendeePreview}
-            </Typography>
-          </Box>
-          {!showAllAttendees && (
-            <AvatarGroup max={ATTENDEE_DISPLAY_LIMIT}>
-              {organizer &&
-                renderAttendeeBadge(
-                  organizer,
-                  'org',
-                  t,
-                  showAllAttendees,
-                  true
-                )}
-              {attendees.map((a, idx) =>
-                renderAttendeeBadge(a, idx.toString(), t, showAllAttendees)
-              )}
-            </AvatarGroup>
-          )}
-          <Typography
+        <Box
+          sx={{
+            marginBottom: 1,
+            display: 'flex',
+            flexDirection: isMobile ? 'column' : 'row',
+            gap: isMobile ? 2 : undefined
+          }}
+        >
+          <Box
             sx={{
-              cursor: 'pointer',
-              marginLeft: 2,
-              fontSize: '14px',
-              color: 'text.secondary',
-              alignSelf: 'center'
+              marginRight: 2,
+              display: 'flex',
+              alignItems: 'center',
+              justifyContent: 'space-between'
             }}
-            onClick={() => setShowAllAttendees(prev => !prev)}
           >
-            {showAllAttendees
-              ? t('eventPreview.showLess')
-              : t('eventPreview.showMore')}
-          </Typography>
+            <Box>
+              <Typography>
+                {t('eventPreview.guests', { count: allAttendees.length })}
+              </Typography>
+              <Typography sx={{ fontSize: '13px', color: 'text.secondary' }}>
+                {attendeePreview}
+              </Typography>
+            </Box>
+            {isMobile && showAllAttendees && (
+              <Button
+                variant="text"
+                size="small"
+                sx={{
+                  marginLeft: 2,
+                  fontSize: '14px',
+                  color: 'text.secondary',
+                  alignSelf: 'center'
+                }}
+                onClick={() => setShowAllAttendees(false)}
+              >
+                {t('eventPreview.showLess')}
+              </Button>
+            )}
+          </Box>
+
+          {!showAllAttendees && (
+            <Box
+              sx={{
+                display: 'flex',
+                flexDirection: 'row',
+                alignItems: 'center',
+                ml: isMobile ? mobileAvatarOffset : undefined
+              }}
+            >
+              <AvatarGroup max={ATTENDEE_DISPLAY_LIMIT}>
+                {organizer &&
+                  renderAttendeeBadge(
+                    organizer,
+                    'org',
+                    t,
+                    showAllAttendees,
+                    true
+                  )}
+                {attendees.map((a, idx) =>
+                  renderAttendeeBadge(a, idx.toString(), t, showAllAttendees)
+                )}
+              </AvatarGroup>
+              <Button
+                variant="text"
+                size="small"
+                sx={{
+                  marginLeft: 2,
+                  fontSize: '14px',
+                  color: 'text.secondary',
+                  alignSelf: 'center'
+                }}
+                onClick={() => setShowAllAttendees(true)}
+              >
+                {t('eventPreview.showMore')}
+              </Button>
+            </Box>
+          )}
+
+          {!isMobile && showAllAttendees && (
+            <Button
+              variant="text"
+              size="small"
+              sx={{
+                marginLeft: 2,
+                fontSize: '14px',
+                color: 'text.secondary',
+                alignSelf: 'center'
+              }}
+              onClick={() => setShowAllAttendees(false)}
+            >
+              {t('eventPreview.showLess')}
+            </Button>
+          )}
         </Box>
       </Box>
 
diff --git a/src/features/Events/EventPreview/EventPreviewDetails.tsx b/src/features/Events/EventPreview/EventPreviewDetails.tsx
index fca8fad..2578da6 100644
--- a/src/features/Events/EventPreview/EventPreviewDetails.tsx
+++ b/src/features/Events/EventPreview/EventPreviewDetails.tsx
@@ -33,7 +33,14 @@ export function EventPreviewDetails({
   const { t } = useI18n()
   const theme = useTheme()
   const infoIconColor = alpha(theme.palette.grey[900], 0.9)
-  const infoIconSx = { minWidth: '25px', marginRight: 2, color: infoIconColor }
+  const infoIconSx = {
+    minWidth: '25px',
+    marginRight: 2,
+    color: infoIconColor,
+    display: 'flex',
+    alignItems: 'center',
+    alignSelf: 'center'
+  }
 
   const resources = useMemo(
     () =>
@@ -87,13 +94,18 @@ export function EventPreviewDetails({
   }
 
   return (
-    <>
+    <Box
+      sx={{
+        display: 'flex',
+        gap: '16px',
+        flexDirection: 'column'
+      }}
+    >
       {/* Video */}
       {event.x_openpass_videoconference && (
         <InfoRow
-          alignItems="flex-start"
           icon={
-            <Box sx={{ ...infoIconSx, mt: 1 }}>
+            <Box sx={infoIconSx}>
               <VideocamOutlinedIcon />
             </Box>
           }
@@ -136,7 +148,6 @@ export function EventPreviewDetails({
       {/* Location */}
       {event.location && (
         <InfoRow
-          alignItems="flex-start"
           icon={
             <Box sx={infoIconSx}>
               <LocationOnOutlinedIcon />
@@ -149,7 +160,6 @@ export function EventPreviewDetails({
       {/* Resource */}
       {resources?.length > 0 && (
         <InfoRow
-          alignItems="flex-start"
           flexWrap="wrap"
           icon={
             <Box sx={infoIconSx}>
@@ -203,7 +213,13 @@ export function EventPreviewDetails({
         <InfoRow
           alignItems="flex-start"
           icon={
-            <Box sx={infoIconSx}>
+            <Box
+              sx={{
+                ...infoIconSx,
+                alignItems: 'flex-start',
+                alignSelf: 'flex-start'
+              }}
+            >
               <SubjectIcon />
             </Box>
           }
@@ -214,7 +230,6 @@ export function EventPreviewDetails({
       {/* Alarm */}
       {event.alarm && (
         <InfoRow
-          alignItems="flex-start"
           icon={
             <Box sx={infoIconSx}>
               <NotificationsNoneIcon />
@@ -237,7 +252,6 @@ export function EventPreviewDetails({
       {/* Repetition */}
       {event.repetition && (
         <InfoRow
-          alignItems="flex-start"
           icon={
             <Box sx={infoIconSx}>
               <RepeatIcon />
@@ -267,6 +281,6 @@ export function EventPreviewDetails({
           error
         />
       )}
-    </>
+    </Box>
   )
 }
diff --git a/src/features/Events/EventPreview/EventPreviewHeader.tsx b/src/features/Events/EventPreview/EventPreviewHeader.tsx
index 29cc2e3..da17806 100644
--- a/src/features/Events/EventPreview/EventPreviewHeader.tsx
+++ b/src/features/Events/EventPreview/EventPreviewHeader.tsx
@@ -37,7 +37,7 @@ export function EventPreviewHeader({
       display="flex"
       justifyContent="flex-end"
       alignItems="center"
-      gap={0.5}
+      gap={2}
       width="100%"
     >
       {window.DEBUG && (
diff --git a/src/features/Events/EventPreview/EventPreviewModal.tsx b/src/features/Events/EventPreview/EventPreviewModal.tsx
index ce12abb..70fb083 100644
--- a/src/features/Events/EventPreview/EventPreviewModal.tsx
+++ b/src/features/Events/EventPreview/EventPreviewModal.tsx
@@ -92,6 +92,7 @@ export default function EventPreviewModal({
         }
         actionsJustifyContent="center"
         style={{ overflow: 'auto' }}
+        titleSx={{ backgroundColor: '#FCFCFC' }}
         title={
           <EventPreviewHeader
             event={event}