diff --git a/apps/web/src/layouts/AppLayout.scss b/apps/web/src/layouts/AppLayout.scss
index f8ffa0c..6cb886f 100644
--- a/apps/web/src/layouts/AppLayout.scss
+++ b/apps/web/src/layouts/AppLayout.scss
@@ -15,7 +15,9 @@
 
 // Fixed-width nav rail. Its own surface (not the page background), same
 // elevation language as a card, so it reads as a distinct, permanent piece
-// of chrome rather than part of the scrolling content.
+// of chrome rather than part of the scrolling content. `width` transitions
+// so collapsing/expanding (see `.collapsed` below) reads as a deliberate
+// motion rather than an abrupt layout jump.
 .app-sidebar {
   display: flex;
   flex-direction: column;
@@ -24,13 +26,55 @@
   padding: var(--space-lg) var(--space-md);
   background: var(--color-surface);
   border-right: 1px solid var(--color-border);
+  transition: width 0.15s ease;
+
+  &__top {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 0 var(--space-sm) var(--space-xl);
+  }
 
   &__brand {
-    padding: 0 var(--space-sm) var(--space-xl);
+    display: flex;
+    align-items: center;
     font-family: var(--font-display);
     font-weight: 700;
     font-size: var(--font-size-lg);
     color: var(--color-primary);
+    overflow: hidden;
+    white-space: nowrap;
+  }
+
+  // Full wordmark by default; swapped for a short monogram when collapsed
+  // (see `.collapsed &__brand-full`/`&__brand-mark` below) — clearer than
+  // an arbitrary icon standing in for the brand itself.
+  &__brand-mark {
+    display: none;
+  }
+
+  &__collapse-toggle {
+    width: 1.75rem;
+    height: 1.75rem;
+    flex-shrink: 0;
+    display: grid;
+    place-items: center;
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius-base);
+    background: var(--color-surface);
+    color: var(--color-text-muted);
+    cursor: pointer;
+
+    svg {
+      width: 1rem;
+      height: 1rem;
+      transition: transform 0.15s ease;
+    }
+
+    &:hover {
+      background: var(--color-surface-alt);
+      color: var(--color-text);
+    }
   }
 
   &__nav {
@@ -40,12 +84,23 @@
     gap: var(--space-xs);
 
     a {
+      display: flex;
+      align-items: center;
+      gap: var(--space-sm);
       padding: var(--space-sm);
       border-radius: var(--radius-base);
       color: var(--color-text);
       font-weight: 600;
       font-size: var(--font-size-sm);
       text-decoration: none;
+      white-space: nowrap;
+      overflow: hidden;
+
+      svg {
+        flex-shrink: 0;
+        width: 1.25rem;
+        height: 1.25rem;
+      }
 
       &:hover {
         background: var(--color-surface-alt);
@@ -87,6 +142,19 @@
     }
   }
 
+  &__settings-toggle-left {
+    display: flex;
+    align-items: center;
+    gap: var(--space-sm);
+    overflow: hidden;
+
+    svg {
+      flex-shrink: 0;
+      width: 1.25rem;
+      height: 1.25rem;
+    }
+  }
+
   &__settings-nav {
     margin-top: var(--space-xs);
   }
@@ -99,8 +167,11 @@
   }
 
   &__account-toggle {
+    display: flex;
+    align-items: center;
+    gap: var(--space-sm);
     width: 100%;
-    padding: 0.5rem var(--space-sm);
+    padding: 0.4rem var(--space-sm);
     font-family: var(--font-body);
     font-size: var(--font-size-sm);
     font-weight: 600;
@@ -110,12 +181,27 @@
     border: 1px solid var(--color-border);
     background: var(--color-surface);
     color: var(--color-text);
+    overflow: hidden;
+    white-space: nowrap;
 
     &:hover {
       background: var(--color-surface-alt);
     }
   }
 
+  &__avatar {
+    flex-shrink: 0;
+    width: 1.5rem;
+    height: 1.5rem;
+    display: grid;
+    place-items: center;
+    border-radius: 50%;
+    background: var(--color-primary);
+    color: #fff;
+    font-size: var(--font-size-xs);
+    font-weight: 700;
+  }
+
   // Anchored just above the toggle rather than inline in the flow — it's a
   // transient overlay, not part of the sidebar's permanent layout.
   &__account-menu {
@@ -143,12 +229,68 @@
       background: none;
       border: none;
       cursor: pointer;
+      white-space: nowrap;
 
       &:hover {
         background: var(--color-surface-alt);
       }
     }
   }
+
+  // --- Collapsed (icon-only rail) state -----------------------------------
+  // A single class toggle on the root element — every nested rule below
+  // just hides labels/chevrons and re-centers icons via CSS, no child
+  // component needs to know the sidebar is collapsed.
+  &.collapsed {
+    width: 4.25rem;
+    padding-left: var(--space-sm);
+    padding-right: var(--space-sm);
+
+    .app-sidebar__top {
+      flex-direction: column;
+      gap: var(--space-sm);
+      padding-left: 0;
+      padding-right: 0;
+    }
+
+    .app-sidebar__brand-full {
+      display: none;
+    }
+
+    .app-sidebar__brand-mark {
+      display: block;
+    }
+
+    .app-sidebar__collapse-toggle svg {
+      transform: rotate(180deg);
+    }
+
+    .app-sidebar__nav a,
+    .app-sidebar__settings-toggle,
+    .app-sidebar__account-toggle {
+      justify-content: center;
+      padding-left: 0;
+      padding-right: 0;
+    }
+
+    .app-sidebar__settings-toggle-left {
+      gap: 0;
+    }
+
+    .label,
+    .chevron {
+      display: none;
+    }
+
+    // The popover would otherwise shrink to the icon rail's own width,
+    // squashing "Mon compte"/"Se déconnecter" — give it a normal,
+    // comfortable width instead, still anchored to the rail's left edge.
+    .app-sidebar__account-menu {
+      left: 0;
+      right: auto;
+      width: 12rem;
+    }
+  }
 }
 
 .app-content {
@@ -176,10 +318,14 @@
     border-right: none;
     border-bottom: 1px solid var(--color-border);
 
-    &__brand {
+    &__top {
       padding: 0 var(--space-sm) 0 0;
     }
 
+    &__brand {
+      padding: 0;
+    }
+
     &__nav {
       flex-direction: row;
       overflow-x: auto;
diff --git a/apps/web/src/layouts/AppLayout.tsx b/apps/web/src/layouts/AppLayout.tsx
index 0033027..8012f9a 100644
--- a/apps/web/src/layouts/AppLayout.tsx
+++ b/apps/web/src/layouts/AppLayout.tsx
@@ -3,6 +3,20 @@ import { useTranslation } from "react-i18next";
 import { NavLink, Outlet, useLocation, useNavigate } from "react-router-dom";
 import { useAuth } from "../features/auth/AuthContext";
 import "./AppLayout.scss";
+import {
+  AccountIcon,
+  ChevronLeftIcon,
+  DietPreferencesIcon,
+  HouseholdIcon,
+  PlanningIcon,
+  RecipesIcon,
+  SettingsIcon,
+  ShoppingListIcon,
+  UserPreferencesIcon,
+} from "./nav-icons";
+
+/** `localStorage` key persisting {@link AppLayout}'s collapsed/expanded sidebar state across reloads. */
+const SIDEBAR_COLLAPSED_KEY = "batchcooking:sidebarCollapsed";
 
 /**
  * One entry in the sidebar's main nav. `key` maps to `layout.nav.<key>` in
@@ -10,9 +24,9 @@ import "./AppLayout.scss";
  * one locale key, no other file to touch.
  */
 const NAV_ITEMS = [
-  { to: "/", key: "planning" },
-  { to: "/recettes", key: "recipes" },
-  { to: "/liste-de-courses", key: "shoppingList" },
+  { to: "/", key: "planning", Icon: PlanningIcon },
+  { to: "/recettes", key: "recipes", Icon: RecipesIcon },
+  { to: "/liste-de-courses", key: "shoppingList", Icon: ShoppingListIcon },
 ] as const;
 
 /**
@@ -20,10 +34,10 @@ const NAV_ITEMS = [
  * maps to `layout.settings.nav.<key>`.
  */
 const SETTINGS_ITEMS = [
-  { to: "/parametres/compte", key: "account" },
-  { to: "/parametres/preferences", key: "preferences" },
-  { to: "/parametres/foyer", key: "household" },
-  { to: "/parametres/preferences-utilisateur", key: "userPreferences" },
+  { to: "/parametres/compte", key: "account", Icon: AccountIcon },
+  { to: "/parametres/preferences", key: "preferences", Icon: DietPreferencesIcon },
+  { to: "/parametres/foyer", key: "household", Icon: HouseholdIcon },
+  { to: "/parametres/preferences-utilisateur", key: "userPreferences", Icon: UserPreferencesIcon },
 ] as const;
 
 /**
@@ -31,20 +45,52 @@ const SETTINGS_ITEMS = [
  * collapsible "Paramètres" nav, and the account menu at the bottom) plus a
  * main content area rendering the matched child route via `<Outlet />`.
  *
+ * The sidebar itself can be collapsed to an icon-only rail (see
+ * `isCollapsed`/`SIDEBAR_COLLAPSED_KEY`) — every nav item keeps its icon
+ * and gains a `title` tooltip, its label just hides via CSS
+ * (`.app-sidebar.collapsed .label`, see AppLayout.scss), so collapsing is a
+ * single class toggle on the `<aside>`, not something each child component
+ * needs to know about.
+ *
  * Mounted once as the parent element of the whole authenticated route
  * group, itself wrapped in {@link RequireAuth} (see `App.tsx`) — `user` is
  * therefore guaranteed non-null by the time this renders.
  */
 export function AppLayout() {
   const { t } = useTranslation();
+  const [isCollapsed, setIsCollapsed] = useState(
+    () => localStorage.getItem(SIDEBAR_COLLAPSED_KEY) === "true",
+  );
+
+  function toggleCollapsed() {
+    setIsCollapsed((collapsed) => {
+      const next = !collapsed;
+      localStorage.setItem(SIDEBAR_COLLAPSED_KEY, String(next));
+      return next;
+    });
+  }
 
   return (
     <div className="app-layout">
-      <aside className="app-sidebar">
-        <div className="app-sidebar__brand">batchCooking</div>
+      <aside className={isCollapsed ? "app-sidebar collapsed" : "app-sidebar"}>
+        <div className="app-sidebar__top">
+          <div className="app-sidebar__brand">
+            {/* Collapsed: a short monogram instead of the full wordmark — clearer than an arbitrary icon standing in for the brand itself. */}
+            <span className="app-sidebar__brand-full">batchCooking</span>
+            <span className="app-sidebar__brand-mark">bC</span>
+          </div>
+          <button
+            type="button"
+            className="app-sidebar__collapse-toggle"
+            onClick={toggleCollapsed}
+            title={t(isCollapsed ? "layout.sidebar.expand" : "layout.sidebar.collapse")}
+          >
+            <ChevronLeftIcon />
+          </button>
+        </div>
 
         <nav className="app-sidebar__nav">
-          {NAV_ITEMS.map(({ to, key }) => (
+          {NAV_ITEMS.map(({ to, key, Icon }) => (
             <NavLink
               key={to}
               to={to}
@@ -54,8 +100,10 @@ export function AppLayout() {
               // same way `end` would.
               end={to === "/"}
               className={({ isActive }) => (isActive ? "active" : undefined)}
+              title={t(`layout.nav.${key}`)}
             >
-              {t(`layout.nav.${key}`)}
+              <Icon />
+              <span className="label">{t(`layout.nav.${key}`)}</span>
             </NavLink>
           ))}
         </nav>
@@ -74,11 +122,14 @@ export function AppLayout() {
 /**
  * Collapsible "Paramètres" section revealing the settings pages (Compte /
  * Préférences alimentaires / Foyer / Préférences utilisateur — see
- * `pages/settings/`). Starts open whenever
- * the current route is already under `/parametres`, so following a link
- * there (e.g. from {@link AccountMenu}) doesn't land on a collapsed menu;
- * otherwise starts closed to keep the sidebar's main focus on the primary
- * nav above it.
+ * `pages/settings/`). Starts open whenever the current route is already
+ * under `/parametres`, so following a link there (e.g. from
+ * {@link AccountMenu}) doesn't land on a collapsed menu; otherwise starts
+ * closed to keep the sidebar's main focus on the primary nav above it.
+ *
+ * Independent of the whole-sidebar collapse toggle in {@link AppLayout} —
+ * this menu's own open/closed state persists across that (a rail-collapsed
+ * sidebar can still have "Paramètres" expanded, just showing icons).
  */
 function SettingsMenu() {
   const { t } = useTranslation();
@@ -92,20 +143,28 @@ function SettingsMenu() {
         className="app-sidebar__settings-toggle"
         aria-expanded={isOpen}
         onClick={() => setIsOpen((open) => !open)}
+        title={t("layout.settings.toggle")}
       >
-        {t("layout.settings.toggle")}
-        <span aria-hidden="true">{isOpen ? "▾" : "▸"}</span>
+        <span className="app-sidebar__settings-toggle-left">
+          <SettingsIcon />
+          <span className="label">{t("layout.settings.toggle")}</span>
+        </span>
+        <span className="chevron" aria-hidden="true">
+          {isOpen ? "▾" : "▸"}
+        </span>
       </button>
 
       {isOpen && (
         <nav className="app-sidebar__nav app-sidebar__settings-nav">
-          {SETTINGS_ITEMS.map(({ to, key }) => (
+          {SETTINGS_ITEMS.map(({ to, key, Icon }) => (
             <NavLink
               key={to}
               to={to}
               className={({ isActive }) => (isActive ? "active" : undefined)}
+              title={t(`layout.settings.nav.${key}`)}
             >
-              {t(`layout.settings.nav.${key}`)}
+              <Icon />
+              <span className="label">{t(`layout.settings.nav.${key}`)}</span>
             </NavLink>
           ))}
         </nav>
@@ -134,6 +193,8 @@ function AccountMenu() {
     navigate("/login");
   }
 
+  const initial = user?.firstName?.charAt(0).toUpperCase() ?? "";
+
   return (
     <div className="app-sidebar__footer">
       <button
@@ -141,8 +202,12 @@ function AccountMenu() {
         className="app-sidebar__account-toggle"
         aria-expanded={isOpen}
         onClick={() => setIsOpen((open) => !open)}
+        title={t("layout.greeting", { firstName: user?.firstName })}
       >
-        {t("layout.greeting", { firstName: user?.firstName })}
+        <span className="app-sidebar__avatar" aria-hidden="true">
+          {initial}
+        </span>
+        <span className="label">{t("layout.greeting", { firstName: user?.firstName })}</span>
       </button>
 
       {isOpen && (
diff --git a/apps/web/src/layouts/nav-icons.tsx b/apps/web/src/layouts/nav-icons.tsx
new file mode 100644
index 0000000..ed96446
--- /dev/null
+++ b/apps/web/src/layouts/nav-icons.tsx
@@ -0,0 +1,110 @@
+import type { ReactNode } from "react";
+
+// Small, hand-drawn line-icon set for the sidebar nav (24×24 viewBox,
+// matches the reviewed mockup — see the plan/PR description) rather than
+// pulling in an icon library for a handful of glyphs. Sized entirely via
+// CSS (`.app-sidebar__nav svg` etc., see AppLayout.scss) — no width/height
+// attribute here, so the same markup works at any size the caller picks.
+// `aria-hidden` on every icon: each one is always paired with visible text
+// (the nav label, or a `title` tooltip when collapsed) that already
+// conveys the meaning — the icon itself is decorative.
+
+function Icon({ children }: { children: ReactNode }) {
+  return (
+    <svg
+      viewBox="0 0 24 24"
+      fill="none"
+      stroke="currentColor"
+      strokeWidth="2"
+      strokeLinecap="round"
+      strokeLinejoin="round"
+      aria-hidden="true"
+    >
+      {children}
+    </svg>
+  );
+}
+
+export function PlanningIcon() {
+  return (
+    <Icon>
+      <rect x="3" y="4" width="18" height="18" rx="2" />
+      <path d="M16 2v4M8 2v4M3 10h18" />
+    </Icon>
+  );
+}
+
+export function RecipesIcon() {
+  return (
+    <Icon>
+      <path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20" />
+      <path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z" />
+    </Icon>
+  );
+}
+
+export function ShoppingListIcon() {
+  return (
+    <Icon>
+      <circle cx="9" cy="21" r="1" />
+      <circle cx="20" cy="21" r="1" />
+      <path d="M1 1h4l2.68 13.39a2 2 0 0 0 2 1.61h9.72a2 2 0 0 0 2-1.61L23 6H6" />
+    </Icon>
+  );
+}
+
+export function SettingsIcon() {
+  return (
+    <Icon>
+      <circle cx="12" cy="12" r="3" />
+      <path d="M19.4 15a1.65 1.65 0 0 0 .33 1.82l.06.06a2 2 0 1 1-2.83 2.83l-.06-.06a1.65 1.65 0 0 0-1.82-.33 1.65 1.65 0 0 0-1 1.51V21a2 2 0 0 1-4 0v-.09A1.65 1.65 0 0 0 9 19.4a1.65 1.65 0 0 0-1.82.33l-.06.06a2 2 0 1 1-2.83-2.83l.06-.06a1.65 1.65 0 0 0 .33-1.82 1.65 1.65 0 0 0-1.51-1H3a2 2 0 0 1 0-4h.09A1.65 1.65 0 0 0 4.6 9a1.65 1.65 0 0 0-.33-1.82l-.06-.06a2 2 0 1 1 2.83-2.83l.06.06a1.65 1.65 0 0 0 1.82.33H9a1.65 1.65 0 0 0 1-1.51V3a2 2 0 0 1 4 0v.09a1.65 1.65 0 0 0 1 1.51 1.65 1.65 0 0 0 1.82-.33l.06-.06a2 2 0 1 1 2.83 2.83l-.06.06a1.65 1.65 0 0 0-.33 1.82V9a1.65 1.65 0 0 0 1.51 1H21a2 2 0 0 1 0 4h-.09a1.65 1.65 0 0 0-1.51 1z" />
+    </Icon>
+  );
+}
+
+export function AccountIcon() {
+  return (
+    <Icon>
+      <path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2" />
+      <circle cx="12" cy="7" r="4" />
+    </Icon>
+  );
+}
+
+export function DietPreferencesIcon() {
+  return (
+    <Icon>
+      <path d="M11 20A7 7 0 0 1 9.8 6.1C15.5 5 17 4.48 19 2c1 2 2 4.18 2 8 0 5.5-4.78 10-10 10z" />
+      <path d="M2 21c0-3 1.85-5.36 5.08-6C9.5 14.52 12 13 13 12" />
+    </Icon>
+  );
+}
+
+export function HouseholdIcon() {
+  return (
+    <Icon>
+      <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z" />
+      <path d="M9 22V12h6v10" />
+    </Icon>
+  );
+}
+
+export function UserPreferencesIcon() {
+  return (
+    <Icon>
+      <circle cx="13.5" cy="6.5" r=".5" />
+      <circle cx="17.5" cy="10.5" r=".5" />
+      <circle cx="8.5" cy="7.5" r=".5" />
+      <circle cx="6.5" cy="12.5" r=".5" />
+      <path d="M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10c.9 0 1.5-.7 1.5-1.5 0-.4-.2-.8-.4-1.1-.2-.3-.4-.6-.4-1 0-.8.7-1.5 1.5-1.5H16c3.3 0 6-2.7 6-6 0-4.4-4-8-10-8z" />
+    </Icon>
+  );
+}
+
+export function ChevronLeftIcon() {
+  return (
+    <Icon>
+      <path d="M15 18l-6-6 6-6" />
+    </Icon>
+  );
+}
diff --git a/apps/web/src/locales/fr/translation.json b/apps/web/src/locales/fr/translation.json
index ff633b0..dffbff3 100644
--- a/apps/web/src/locales/fr/translation.json
+++ b/apps/web/src/locales/fr/translation.json
@@ -59,6 +59,10 @@
     }
   },
   "layout": {
+    "sidebar": {
+      "collapse": "Replier le menu",
+      "expand": "Déplier le menu"
+    },
     "nav": {
       "planning": "Planning",
       "recipes": "Recettes",