diff --git a/src/features/admin/courses/schema/index.js b/src/features/admin/courses/schema/index.js
index 5d36c0f..ee492e0 100644
--- a/src/features/admin/courses/schema/index.js
+++ b/src/features/admin/courses/schema/index.js
@@ -9,10 +9,7 @@ export const courseSchema = object().shape({
     .integer('ظرفیت باید عدد صحیح باشد')
     .min(1, 'ظرفیت باید حداقل ۱ نفر باشد'),
   prerequisiteCourseIds: array().nullable().default([]),
-  contentMediaId: number()
-    .typeError('شناسه فایل محتوای دوره باید عدد باشد')
-    .nullable()
-    .notRequired(),
+  coverMediaId: number().typeError('شناسه تصویر دوره باید عدد باشد').nullable().notRequired(),
   description: string().nullable().notRequired(),
   termId: mixed().required(),
   isActive: boolean().nullable().notRequired(),
diff --git a/src/features/student/pages/StudentDashboardPage.vue b/src/features/student/pages/StudentDashboardPage.vue
index 61f907b..e624c47 100644
--- a/src/features/student/pages/StudentDashboardPage.vue
+++ b/src/features/student/pages/StudentDashboardPage.vue
@@ -91,11 +91,11 @@ const performanceStats = computed(() => {
   const stats = dashboard.value.stats ?? {}
   return [
     {
-      icon: 'user-sound',
-      label: 'تعداد جلسات اعزام شده',
+      icon: 'video',
+      label: 'تعداد جلسات آموزشی گذرانده‌شده',
       value: toFaDigits(stats.attendedSessions ?? 0),
       unit: 'جلسه',
-      subtitle: 'اعزام شده است',
+      subtitle: 'با موفقیت گذرانده شده',
       to: { name: 'student-terms' },
     },
     {
diff --git a/src/layouts/sidebars/AdminSidebar.vue b/src/layouts/sidebars/AdminSidebar.vue
index 539c42b..90ebc24 100644
--- a/src/layouts/sidebars/AdminSidebar.vue
+++ b/src/layouts/sidebars/AdminSidebar.vue
@@ -5,27 +5,47 @@
     </div>
     <nav class="admin-sidebar__nav">
       <ul>
-        <li v-for="item in menuItems" :key="item.title" class="admin-sidebar__item">
-          <component
-            :is="item.to ? 'RouterLink' : 'div'"
+        <li v-for="(item, index) in menuItems" :key="item.title" class="admin-sidebar__item">
+          <button
+            v-if="item.children?.length"
+            type="button"
+            class="admin-sidebar__link"
+            :class="{ 'admin-sidebar__link--active': item.active }"
+            :aria-expanded="isExpanded(item)"
+            :aria-controls="submenuId(index)"
+            @click="toggle(item)"
+          >
+            <SvgIcon v-if="item.icon" :name="item.icon" :size="22" />
+            <span>{{ item.title }}</span>
+            <SvgIcon
+              name="caret-down"
+              :size="16"
+              class="admin-sidebar__chevron"
+              :class="{ 'admin-sidebar__chevron--expanded': isExpanded(item) }"
+            />
+          </button>
+          <RouterLink
+            v-else
             :to="item.to"
             class="admin-sidebar__link"
             :class="{ 'admin-sidebar__link--active': item.active }"
           >
             <SvgIcon v-if="item.icon" :name="item.icon" :size="22" />
             <span>{{ item.title }}</span>
-          </component>
-          <ul v-if="item.children?.length" class="admin-sidebar__submenu">
-            <li v-for="child in item.children" :key="child.title">
-              <RouterLink
-                :to="child.to"
-                class="admin-sidebar__sublink"
-                :class="{ 'admin-sidebar__sublink--active': child.active }"
-              >
-                {{ child.title }}
-              </RouterLink>
-            </li>
-          </ul>
+          </RouterLink>
+          <Transition v-if="item.children?.length" name="admin-sidebar__accordion">
+            <ul v-show="isExpanded(item)" :id="submenuId(index)" class="admin-sidebar__submenu">
+              <li v-for="child in item.children" :key="child.title">
+                <RouterLink
+                  :to="child.to"
+                  class="admin-sidebar__sublink"
+                  :class="{ 'admin-sidebar__sublink--active': child.active }"
+                >
+                  {{ child.title }}
+                </RouterLink>
+              </li>
+            </ul>
+          </Transition>
         </li>
       </ul>
     </nav>
@@ -34,16 +54,43 @@
 </template>
 
 <script setup>
+import { ref, watch } from 'vue'
 import { RouterLink } from 'vue-router'
 import { gallery } from '@/utils/gallery'
 import SvgIcon from '@/components/icons/SvgIcon.vue'
 import SidebarLogout from '@/layouts/sidebars/SidebarLogout.vue'
 
-defineProps({
+const props = defineProps({
   menuItems: { type: Array, default: () => [] },
 })
 
 const logo = gallery.logoPinkishRed
+const expandedItems = ref({})
+
+watch(
+  () => props.menuItems,
+  (items) => {
+    const next = { ...expandedItems.value }
+    items.forEach((item) => {
+      if (!item.children?.length) return
+      if (!(item.title in next)) next[item.title] = false
+      if (item.active) next[item.title] = true
+    })
+    expandedItems.value = next
+  },
+  { immediate: true }
+)
+
+const isExpanded = (item) => Boolean(expandedItems.value[item.title])
+
+const toggle = (item) => {
+  expandedItems.value = {
+    ...expandedItems.value,
+    [item.title]: !isExpanded(item),
+  }
+}
+
+const submenuId = (index) => `admin-sidebar-submenu-${index}`
 </script>
 
 <style lang="scss" scoped>
@@ -82,6 +129,7 @@ const logo = gallery.logoPinkishRed
   }
 
   &__link {
+    width: 100%;
     display: flex;
     align-items: center;
     gap: 0.625rem;
@@ -91,6 +139,9 @@ const logo = gallery.logoPinkishRed
     font-size: 0.875rem;
     color: #4b5563;
     text-decoration: none;
+    text-align: start;
+    border: 0;
+    background: transparent;
     transition: background-color 0.15s, color 0.15s;
     cursor: pointer;
 
@@ -105,6 +156,15 @@ const logo = gallery.logoPinkishRed
     }
   }
 
+  &__chevron {
+    margin-inline-start: auto;
+    transition: transform 0.2s ease;
+
+    &--expanded {
+      transform: rotate(180deg);
+    }
+  }
+
   &__submenu {
     margin-top: 0.25rem !important;
     padding-inline-start: 1.5rem !important;
@@ -130,5 +190,23 @@ const logo = gallery.logoPinkishRed
       font-weight: 700;
     }
   }
+
+  &__accordion-enter-active,
+  &__accordion-leave-active {
+    overflow: hidden;
+    transition: max-height 0.2s ease, opacity 0.2s ease;
+  }
+
+  &__accordion-enter-from,
+  &__accordion-leave-to {
+    max-height: 0;
+    opacity: 0;
+  }
+
+  &__accordion-enter-to,
+  &__accordion-leave-from {
+    max-height: 16rem;
+    opacity: 1;
+  }
 }
 </style>