diff --git a/scripts/ralph/prd.json b/scripts/ralph/prd.json
index 48c6b54..ff971e7 100644
--- a/scripts/ralph/prd.json
+++ b/scripts/ralph/prd.json
@@ -116,8 +116,8 @@
         "npm run typecheck passes",
         "Verify in browser: Tap on Firma/Perioada toggles expansion"
       ],
-      "passes": false,
-      "notes": "Modifică MobileDrawerMenu.vue, adaugă state pentru collapsed și persistență localStorage"
+      "passes": true,
+      "notes": "Completed in iteration 6"
     },
     {
       "id": "US-606",
diff --git a/scripts/ralph/progress.txt b/scripts/ralph/progress.txt
index 296e7e7..29e8418 100644
--- a/scripts/ralph/progress.txt
+++ b/scripts/ralph/progress.txt
@@ -272,3 +272,9 @@ PRD: tasks/prd-ui-fixes-phase6.md
 [2026-01-13 16:17:06] Working on story: US-604
 [2026-01-13 16:17:06] Running Claude... (log: /workspace/roa2web/scripts/ralph/logs/iteration_5_US-604.log)
 [2026-01-13 16:18:21] SUCCESS: Story US-604 passed!
+[2026-01-13 16:18:22] Changes committed
+[2026-01-13 16:18:22] Progress: 4/10 stories completed
+[2026-01-13 16:18:24] === Iteration 6/30 ===
+[2026-01-13 16:18:24] Working on story: US-605
+[2026-01-13 16:18:24] Running Claude... (log: /workspace/roa2web/scripts/ralph/logs/iteration_6_US-605.log)
+[2026-01-13 16:23:39] SUCCESS: Story US-605 passed!
diff --git a/src/shared/components/mobile/MobileDrawerMenu.vue b/src/shared/components/mobile/MobileDrawerMenu.vue
index 7a05a0f..950828e 100644
--- a/src/shared/components/mobile/MobileDrawerMenu.vue
+++ b/src/shared/components/mobile/MobileDrawerMenu.vue
@@ -12,84 +12,111 @@
           </div>
 
           <!-- Company & Period Selection (below header, above navigation) -->
+          <!-- US-605: Collapsible sections with localStorage persistence -->
           <div v-if="companiesStore" class="drawer-selectors">
-            <!-- Company Selector -->
-            <div class="selector-group">
-              <label class="selector-label">Firma</label>
+            <!-- Company Selector (Collapsible) -->
+            <div class="selector-group" :class="{ 'is-collapsed': companyCollapsed }">
+              <!-- Collapsible Header -->
               <button
-                class="selector-trigger"
-                @click="toggleCompanyDropdown"
-                :aria-expanded="companyDropdownOpen"
+                class="collapsible-header"
+                @click="toggleCompanyCollapsed"
+                :aria-expanded="!companyCollapsed"
               >
-                <div class="selector-value">
-                  <span class="selector-main">{{ selectedCompanyName }}</span>
-                  <span v-if="selectedCompanyCode" class="selector-sub">{{ selectedCompanyCode }}</span>
-                </div>
-                <i class="pi pi-chevron-down" :class="{ 'rotate-180': companyDropdownOpen }"></i>
+                <span class="collapsible-label">Firma</span>
+                <span v-if="companyCollapsed" class="collapsible-value">{{ selectedCompanyName }}</span>
+                <i class="pi" :class="companyCollapsed ? 'pi-chevron-down' : 'pi-chevron-up'"></i>
               </button>
-              <!-- Company Dropdown Panel -->
-              <div v-if="companyDropdownOpen" class="selector-panel">
-                <div class="selector-search">
-                  <i class="pi pi-search"></i>
-                  <input
-                    ref="companySearchInput"
-                    type="text"
-                    v-model="companySearchQuery"
-                    placeholder="Caută firmă..."
-                    class="selector-search-input"
-                  />
-                </div>
-                <div class="selector-list">
-                  <div
-                    v-for="company in filteredCompanies"
-                    :key="company.id_firma"
-                    class="selector-item"
-                    :class="{ active: company.id_firma === companiesStore.selectedCompany?.id_firma }"
-                    @click="selectCompany(company)"
-                  >
-                    <div class="selector-item-content">
-                      <span class="selector-item-name">{{ company.name }}</span>
-                      <span v-if="company.fiscal_code" class="selector-item-sub">CUI: {{ company.fiscal_code }}</span>
-                    </div>
-                    <i v-if="company.id_firma === companiesStore.selectedCompany?.id_firma" class="pi pi-check"></i>
+
+              <!-- Expanded Content -->
+              <div v-if="!companyCollapsed" class="collapsible-content">
+                <button
+                  class="selector-trigger"
+                  @click="toggleCompanyDropdown"
+                  :aria-expanded="companyDropdownOpen"
+                >
+                  <div class="selector-value">
+                    <span class="selector-main">{{ selectedCompanyName }}</span>
+                    <span v-if="selectedCompanyCode" class="selector-sub">{{ selectedCompanyCode }}</span>
                   </div>
-                  <div v-if="filteredCompanies.length === 0" class="selector-empty">
-                    <i class="pi pi-info-circle"></i>
-                    <span>Nu s-au găsit firme</span>
+                  <i class="pi pi-chevron-down" :class="{ 'rotate-180': companyDropdownOpen }"></i>
+                </button>
+                <!-- Company Dropdown Panel -->
+                <div v-if="companyDropdownOpen" class="selector-panel">
+                  <div class="selector-search">
+                    <i class="pi pi-search"></i>
+                    <input
+                      ref="companySearchInput"
+                      type="text"
+                      v-model="companySearchQuery"
+                      placeholder="Caută firmă..."
+                      class="selector-search-input"
+                    />
+                  </div>
+                  <div class="selector-list">
+                    <div
+                      v-for="company in filteredCompanies"
+                      :key="company.id_firma"
+                      class="selector-item"
+                      :class="{ active: company.id_firma === companiesStore.selectedCompany?.id_firma }"
+                      @click="selectCompany(company)"
+                    >
+                      <div class="selector-item-content">
+                        <span class="selector-item-name">{{ company.name }}</span>
+                        <span v-if="company.fiscal_code" class="selector-item-sub">CUI: {{ company.fiscal_code }}</span>
+                      </div>
+                      <i v-if="company.id_firma === companiesStore.selectedCompany?.id_firma" class="pi pi-check"></i>
+                    </div>
+                    <div v-if="filteredCompanies.length === 0" class="selector-empty">
+                      <i class="pi pi-info-circle"></i>
+                      <span>Nu s-au găsit firme</span>
+                    </div>
                   </div>
                 </div>
               </div>
             </div>
 
-            <!-- Period Selector -->
-            <div v-if="periodStore && companiesStore.selectedCompany" class="selector-group">
-              <label class="selector-label">Perioada</label>
+            <!-- Period Selector (Collapsible) -->
+            <div v-if="periodStore && companiesStore.selectedCompany" class="selector-group" :class="{ 'is-collapsed': periodCollapsed }">
+              <!-- Collapsible Header -->
               <button
-                class="selector-trigger"
-                @click="togglePeriodDropdown"
-                :aria-expanded="periodDropdownOpen"
+                class="collapsible-header"
+                @click="togglePeriodCollapsed"
+                :aria-expanded="!periodCollapsed"
               >
-                <div class="selector-value">
-                  <span class="selector-main">{{ selectedPeriodDisplay }}</span>
-                </div>
-                <i class="pi pi-chevron-down" :class="{ 'rotate-180': periodDropdownOpen }"></i>
+                <span class="collapsible-label">Perioada</span>
+                <span v-if="periodCollapsed" class="collapsible-value">{{ selectedPeriodDisplay }}</span>
+                <i class="pi" :class="periodCollapsed ? 'pi-chevron-down' : 'pi-chevron-up'"></i>
               </button>
-              <!-- Period Dropdown Panel -->
-              <div v-if="periodDropdownOpen" class="selector-panel">
-                <div class="selector-list">
-                  <div
-                    v-for="period in availablePeriods"
-                    :key="`${period.an}-${period.luna}`"
-                    class="selector-item"
-                    :class="{ active: isPeriodSelected(period) }"
-                    @click="selectPeriod(period)"
-                  >
-                    <span class="selector-item-name">{{ period.display_name }}</span>
-                    <i v-if="isPeriodSelected(period)" class="pi pi-check"></i>
+
+              <!-- Expanded Content -->
+              <div v-if="!periodCollapsed" class="collapsible-content">
+                <button
+                  class="selector-trigger"
+                  @click="togglePeriodDropdown"
+                  :aria-expanded="periodDropdownOpen"
+                >
+                  <div class="selector-value">
+                    <span class="selector-main">{{ selectedPeriodDisplay }}</span>
                   </div>
-                  <div v-if="availablePeriods.length === 0" class="selector-empty">
-                    <i class="pi pi-info-circle"></i>
-                    <span>Nu sunt perioade disponibile</span>
+                  <i class="pi pi-chevron-down" :class="{ 'rotate-180': periodDropdownOpen }"></i>
+                </button>
+                <!-- Period Dropdown Panel -->
+                <div v-if="periodDropdownOpen" class="selector-panel">
+                  <div class="selector-list">
+                    <div
+                      v-for="period in availablePeriods"
+                      :key="`${period.an}-${period.luna}`"
+                      class="selector-item"
+                      :class="{ active: isPeriodSelected(period) }"
+                      @click="selectPeriod(period)"
+                    >
+                      <span class="selector-item-name">{{ period.display_name }}</span>
+                      <i v-if="isPeriodSelected(period)" class="pi pi-check"></i>
+                    </div>
+                    <div v-if="availablePeriods.length === 0" class="selector-empty">
+                      <i class="pi pi-info-circle"></i>
+                      <span>Nu sunt perioade disponibile</span>
+                    </div>
                   </div>
                 </div>
               </div>
@@ -231,6 +258,7 @@ import { useRoute, useRouter } from 'vue-router'
 
 /**
  * MobileDrawerMenu - Material Design 3 inspired navigation drawer for mobile (v3)
+ * US-605: Added collapsible Firma/Perioada sections
  *
  * Props:
  * - modelValue (v-model): Controls visibility of the drawer
@@ -318,6 +346,56 @@ const companySearchInput = ref(null)
 // Period selector state
 const periodDropdownOpen = ref(false)
 
+// Collapsible section state (US-605)
+// Default to collapsed, persisted in localStorage
+const COLLAPSED_STORAGE_KEY = 'mobile-drawer-sections-collapsed'
+
+const loadCollapsedState = () => {
+  try {
+    const saved = localStorage.getItem(COLLAPSED_STORAGE_KEY)
+    if (saved) {
+      return JSON.parse(saved)
+    }
+  } catch (e) {
+    // Ignore parse errors
+  }
+  // Default: both sections collapsed
+  return { company: true, period: true }
+}
+
+const savedCollapsedState = loadCollapsedState()
+const companyCollapsed = ref(savedCollapsedState.company)
+const periodCollapsed = ref(savedCollapsedState.period)
+
+const saveCollapsedState = () => {
+  try {
+    localStorage.setItem(COLLAPSED_STORAGE_KEY, JSON.stringify({
+      company: companyCollapsed.value,
+      period: periodCollapsed.value
+    }))
+  } catch (e) {
+    // Ignore storage errors
+  }
+}
+
+const toggleCompanyCollapsed = () => {
+  companyCollapsed.value = !companyCollapsed.value
+  // Close dropdown if collapsing
+  if (companyCollapsed.value) {
+    companyDropdownOpen.value = false
+  }
+  saveCollapsedState()
+}
+
+const togglePeriodCollapsed = () => {
+  periodCollapsed.value = !periodCollapsed.value
+  // Close dropdown if collapsing
+  if (periodCollapsed.value) {
+    periodDropdownOpen.value = false
+  }
+  saveCollapsedState()
+}
+
 // Computed properties for company selector
 const selectedCompanyName = computed(() => {
   return props.companiesStore?.selectedCompany?.name || 'Selectare firmă'
@@ -780,6 +858,68 @@ onMounted(() => {
   font-size: var(--text-sm);
 }
 
+/* ================================================
+   Collapsible Sections (US-605)
+   ================================================ */
+
+.collapsible-header {
+  display: flex;
+  align-items: center;
+  width: 100%;
+  padding: var(--space-sm) var(--space-md);
+  background: transparent;
+  border: none;
+  cursor: pointer;
+  min-height: 44px;
+  gap: var(--space-sm);
+  transition: background var(--transition-fast);
+  border-radius: var(--radius-md);
+}
+
+.collapsible-header:hover {
+  background: var(--surface-hover);
+}
+
+.collapsible-header:active {
+  background: var(--surface-hover);
+}
+
+.collapsible-label {
+  font-size: var(--text-xs);
+  font-weight: var(--font-medium);
+  color: var(--text-color-secondary);
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  flex-shrink: 0;
+}
+
+.collapsible-value {
+  flex: 1;
+  font-size: var(--text-sm);
+  font-weight: var(--font-medium);
+  color: var(--text-color);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  text-align: left;
+}
+
+.collapsible-header .pi {
+  font-size: var(--text-xs);
+  color: var(--text-color-secondary);
+  flex-shrink: 0;
+  transition: transform var(--transition-fast);
+}
+
+.collapsible-content {
+  padding-top: var(--space-xs);
+}
+
+/* When collapsed, the selector-group has minimal padding */
+.selector-group.is-collapsed {
+  padding-bottom: 0;
+}
+
 /* ================================================
    Navigation Sections Container (scrollable)
    ================================================ */
@@ -1113,6 +1253,23 @@ onMounted(() => {
   color: var(--text-color-secondary);
 }
 
+/* Dark mode: Collapsible Sections (US-605) */
+[data-theme="dark"] .collapsible-header:hover {
+  background: var(--surface-hover);
+}
+
+[data-theme="dark"] .collapsible-label {
+  color: var(--text-color-secondary);
+}
+
+[data-theme="dark"] .collapsible-value {
+  color: var(--text-color);
+}
+
+[data-theme="dark"] .collapsible-header .pi {
+  color: var(--text-color-secondary);
+}
+
 [data-theme="dark"] .drawer-link {
   color: var(--text-color);
 }
@@ -1293,6 +1450,23 @@ onMounted(() => {
     color: var(--text-color-secondary);
   }
 
+  /* Auto dark mode: Collapsible Sections (US-605) */
+  :root:not([data-theme]) .collapsible-header:hover {
+    background: var(--surface-hover);
+  }
+
+  :root:not([data-theme]) .collapsible-label {
+    color: var(--text-color-secondary);
+  }
+
+  :root:not([data-theme]) .collapsible-value {
+    color: var(--text-color);
+  }
+
+  :root:not([data-theme]) .collapsible-header .pi {
+    color: var(--text-color-secondary);
+  }
+
   :root:not([data-theme]) .drawer-link {
     color: var(--text-color);
   }