diff --git a/src/App.svelte b/src/App.svelte
index 8697ed4..cb790cb 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -48,30 +48,32 @@
   })
 </script>
 
-<div class="app">
-  <Cursor />
-  <Header />
+<Cursor />
+<Header />
 
-  <main class="main">
-    <div
-      class="slides-wrapper"
-      style="width: {wrapperWidth}; transform: {wrapperTransform}"
-    >
-      {#each slides.all as slide}
-        <div class="slide" data-slide={slide.id}>
-          {#if slide.loaded}
-            <svelte:component
-              this={templates[slide.template] ?? Default}
-              data={slide.data}
-            />
-          {/if}
-        </div>
-      {/each}
-    </div>
-  </main>
-</div>
+<main class="main">
+  <div
+    class="slides-wrapper"
+    style="width: {wrapperWidth}; transform: {wrapperTransform}"
+  >
+    {#each slides.all as slide}
+      <section class="slide" data-slide={slide.id}>
+        {#if slide.loaded}
+          <svelte:component
+            this={templates[slide.template] ?? Default}
+            data={slide.data}
+          />
+        {/if}
+      </section>
+    {/each}
+  </div>
+</main>
 
 <style>
+  :global(#app) {
+    height: 100vh;
+  }
+
   :global(*) {
     margin: 0;
     padding: 0;
@@ -95,10 +97,6 @@
     height: auto;
   }
 
-  .app {
-    height: 100vh;
-  }
-
   .main {
     position: relative;
     overflow: hidden;
diff --git a/src/components/layout/Header.svelte b/src/components/layout/Header.svelte
index 9223461..55e213a 100644
--- a/src/components/layout/Header.svelte
+++ b/src/components/layout/Header.svelte
@@ -2,7 +2,6 @@
   import { navigation } from '@state/navigation.svelte'
   import { locale } from '@state/locale.svelte'
   import { slides } from '@state/slides.svelte'
-  import { slideTo } from '@router'
 
   const isMenuOpen = $derived(navigation.isMenuOpen)
   const currentLang = $derived(locale.current)
@@ -13,160 +12,50 @@
     return slide.titles?.[currentLang] || slide.title || slide.id
   }
 
-  function handleNav(path) {
-    slideTo(path)
-  }
-
   function toggleMenu() {
     navigation.toggleMenu()
   }
 </script>
 
-<div class="navbar">
-  <div
-    class="clickable"
-    style="
-      z-index: 60;
-      position: absolute;
-      float: left;
-      left: 5vh;
-      top: 50%;
-      transform: translateY(-50%);
-    "
-    onclick={() => handleNav('/')}
-    onkeypress={(e) => e.key === 'Enter' && handleNav('/')}
-    role="button"
-    tabindex="0"
-  >
-    <img
-      src="/assets/img/GIF_world_game_planete.gif"
-      alt="World Game"
-      class="clickable wg-logo"
-    />
-  </div>
+<nav class="navbar" class:navbar--open={isMenuOpen}>
+  <a href="/" class="navbar-logo">
+    <img src="/assets/img/GIF_world_game_planete.gif" alt="World Game" class="wg-logo" />
+  </a>
 
-  {#each menuItems as slide}
-    <div
-      class="navbar-item clickable"
-      class:active={activeId === slide.id}
-      style="visibility: {isMenuOpen ? 'hidden' : 'visible'};"
-      onclick={() => handleNav(slide.path)}
-      onkeypress={(e) => e.key === 'Enter' && handleNav(slide.path)}
-      role="button"
-      tabindex="0"
-    >
-      {getTitle(slide)}
-    </div>
-  {/each}
+  <ul class="navbar-list">
+    {#each menuItems as slide}
+      <li>
+        <a
+          href={slide.path}
+          class="navbar-item"
+          class:active={activeId === slide.id}
+        >
+          {getTitle(slide)}
+        </a>
+      </li>
+    {/each}
+  </ul>
 
-  <div
-    class="clickable"
-    style="
-      z-index: 60;
-      position: absolute;
-      float: right;
-      right: 5vh;
-      top: 50%;
-      transform: translateY(-50%);
-    "
+  <button
+    class="navbar-toggle"
     onclick={toggleMenu}
-    onkeypress={(e) => e.key === 'Enter' && toggleMenu()}
-    role="button"
-    tabindex="0"
+    aria-label={isMenuOpen ? 'Fermer le menu' : 'Ouvrir le menu'}
+    aria-expanded={isMenuOpen}
   >
-    <svg
-      width="50"
-      height="50"
-      viewBox="0 0 24 24"
-      fill="none"
-      xmlns="http://www.w3.org/2000/svg"
-      style="height: 4.5vh; min-height: 36px;"
-    >
-      <circle
-        cx="7"
-        cy="7"
-        r="2"
-        fill="white"
-        style="
-          transform: {isMenuOpen ? 'translate(5px, 5px) scale(0.7)' : 'translate(0px, 0px) scale(1)'};
-          transform-origin: center;
-          transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
-        "
-      />
-
-      <circle
-        cx="17"
-        cy="7"
-        r="2"
-        fill="white"
-        style="
-          transform: {isMenuOpen ? 'translate(-5px, 5px) scale(0.7)' : 'translate(0px, 0px) scale(1)'};
-          transform-origin: center;
-          transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
-        "
-      />
-
-      <circle
-        cx="7"
-        cy="17"
-        r="2"
-        fill="white"
-        style="
-          transform: {isMenuOpen ? 'translate(5px, -5px) scale(0.7)' : 'translate(0px, 0px) scale(1)'};
-          transform-origin: center;
-          transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
-        "
-      />
-
-      <circle
-        cx="17"
-        cy="17"
-        r="2"
-        fill="white"
-        style="
-          transform: {isMenuOpen ? 'translate(-5px, -5px) scale(0.7)' : 'translate(0px, 0px) scale(1)'};
-          transform-origin: center;
-          transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
-        "
-      />
-
-      <line
-        x1="9"
-        y1="9"
-        x2="15"
-        y2="15"
-        stroke="white"
-        stroke-width="2.5"
-        stroke-linecap="round"
-        style="
-          opacity: {isMenuOpen ? 1 : 0};
-          transition: opacity 0.2s ease-in-out;
-          transition-delay: {isMenuOpen ? '0.1s' : '0s'};
-        "
-      />
-      <line
-        x1="15"
-        y1="9"
-        x2="9"
-        y2="15"
-        stroke="white"
-        stroke-width="2.5"
-        stroke-linecap="round"
-        style="
-          opacity: {isMenuOpen ? 1 : 0};
-          transition: opacity 0.2s ease-in-out;
-          transition-delay: {isMenuOpen ? '0.1s' : '0s'};
-        "
-      />
+    <svg width="50" height="50" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+      <circle cx="7"  cy="7"  r="2" fill="white" class="dot dot-tl" />
+      <circle cx="17" cy="7"  r="2" fill="white" class="dot dot-tr" />
+      <circle cx="7"  cy="17" r="2" fill="white" class="dot dot-bl" />
+      <circle cx="17" cy="17" r="2" fill="white" class="dot dot-br" />
+      <line x1="9"  y1="9"  x2="15" y2="15" stroke="white" stroke-width="2.5" stroke-linecap="round" class="cross-line" />
+      <line x1="15" y1="9"  x2="9"  y2="15" stroke="white" stroke-width="2.5" stroke-linecap="round" class="cross-line" />
     </svg>
-  </div>
-</div>
+  </button>
+</nav>
 
 <style>
   .navbar {
     width: 100%;
-    align-items: center;
-    justify-self: center;
     position: fixed;
     top: 0;
     left: 0;
@@ -175,19 +64,44 @@
     font-size: var(--font-size-paragraph);
     font-weight: normal;
     color: white;
-    text-align: center !important;
+    text-align: center;
     text-transform: uppercase;
-    padding: 2vh 0 2vh 0;
-    backdrop-filter: blur(0px);
-    transition: all 0.3s ease-in-out;
-
-    color: white;
-    display: block;
+    padding: 2vh 0;
     background-color: rgba(0, 0, 0, 0.3);
     backdrop-filter: blur(15px);
     transition: 0.3s;
   }
 
+  /* Logo */
+  .navbar-logo {
+    position: absolute;
+    left: 5vh;
+    top: 50%;
+    transform: translateY(-50%);
+    z-index: 60;
+  }
+
+  .wg-logo {
+    height: 3rem;
+    display: block;
+    pointer-events: none;
+  }
+
+  /* Nav list */
+  .navbar-list {
+    list-style: none;
+    margin: 0;
+    padding: 0;
+  }
+
+  .navbar-list li {
+    display: inline;
+  }
+
+  .navbar--open .navbar-list {
+    visibility: hidden;
+  }
+
   .navbar-item {
     display: inline-block;
     padding: 1vmax 2vmax;
@@ -199,22 +113,50 @@
     transition: color 0.3s;
   }
 
-  .navbar-item.active {
-    color: #04fea0;
-  }
-
+  .navbar-item.active,
   .navbar-item:hover {
     color: #04fea0;
   }
 
-  .wg-logo {
-    height: 3rem;
-    pointer-events: none;
+  /* Hamburger button */
+  .navbar-toggle {
+    position: absolute;
+    right: 5vh;
+    top: 50%;
+    transform: translateY(-50%);
+    z-index: 60;
+    background: none;
+    border: none;
+    padding: 0;
+    cursor: pointer;
   }
 
-  .clickable {
-    cursor: pointer;
-    user-select: none;
+  .navbar-toggle svg {
+    height: 4.5vh;
+    min-height: 36px;
+    display: block;
+  }
+
+  /* Dot animation */
+  .dot {
+    transform-origin: center;
+    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+  }
+
+  .navbar--open .dot-tl { transform: translate(5px,  5px)  scale(0.7); }
+  .navbar--open .dot-tr { transform: translate(-5px, 5px)  scale(0.7); }
+  .navbar--open .dot-bl { transform: translate(5px,  -5px) scale(0.7); }
+  .navbar--open .dot-br { transform: translate(-5px, -5px) scale(0.7); }
+
+  /* Cross lines */
+  .cross-line {
+    opacity: 0;
+    transition: opacity 0.2s ease-in-out;
+  }
+
+  .navbar--open .cross-line {
+    opacity: 1;
+    transition-delay: 0.1s;
   }
 
   @media screen and (max-width: 700px) {
diff --git a/src/views/Home.svelte b/src/views/Home.svelte
index a3e432c..d983561 100644
--- a/src/views/Home.svelte
+++ b/src/views/Home.svelte
@@ -45,83 +45,52 @@
 </script>
 
 <div class="home golden-grid slide" data-anchor="HOME">
-  <div style="grid-area: 1/1/span 20/span 20; filter: saturate(140%);">
-    <div class="olly">
-      <figure
-        style="
-          height: -webkit-fill-available;
-          width: -webkit-fill-available;
-        "
+  <div class="home-bg">
+    <figure class="home-figure">
+      <video
+        muted
+        autoplay
+        playsinline
+        loop
+        controls={false}
+        preload="metadata"
+        id="home-video"
+        class="home-video home-video-desktop"
       >
-        <video
-          muted
-          autoplay
-          playsinline
-          loop
-          controls={false}
-          preload="metadata"
-          id="home-video"
-          class="home-video home-video-desktop"
-          style="
-            object-fit: cover;
-            min-height: 100%;
-            min-width: 100%;
-            height: -webkit-fill-available;
-            width: -webkit-fill-available;
-          "
-        >
-          <source
-            src="/assets/video/Website_version.mp4"
-            type="video/mp4"
-          />
-        </video>
-        <video
-          muted
-          autoplay
-          playsinline
-          loop
-          controls={false}
-          preload="metadata"
-          id="home-video-mobile"
-          class="home-video-mobile"
-          style="
-            object-fit: cover;
-            min-height: 100%;
-            min-width: 100%;
-            height: -webkit-fill-available;
-            width: -webkit-fill-available;
-          "
-        >
-          <source
-            src="/assets/video/mobile_version_texte_fixe.mp4"
-            type="video/mp4"
-          />
-        </video>
-      </figure>
-    </div>
+        <source src="/assets/video/Website_version.mp4" type="video/mp4" />
+      </video>
+      <video
+        muted
+        autoplay
+        playsinline
+        loop
+        controls={false}
+        preload="metadata"
+        id="home-video-mobile"
+        class="home-video home-video-mobile"
+      >
+        <source src="/assets/video/mobile_version_texte_fixe.mp4" type="video/mp4" />
+      </video>
+    </figure>
   </div>
 
   <div class="vertical-line-start"></div>
   <div class="vertical-line-center"></div>
   <div class="vertical-line-end"></div>
 
-  <div
-    class="home-text"
-    style="z-index: 5; justify-self: center; margin-top: 6vmax;"
-  >
+  <div class="home-text">
     <h2 class="font-face-danzza-light home-subtitle">
       {data.hero.subtitle}
     </h2>
     <div
-      class="clickable button"
-      style="margin: auto; margin-top: 40px;"
+      class="clickable button home-cta"
       onclick={handleExplore}
       onkeypress={(e) => e.key === 'Enter' && handleExplore()}
       role="button"
       tabindex="0"
     >
       <div class="earth-icon clickable-filter-black"></div>
-      <p class="clickable" style="font-family: Terminal; font-size: 1.2em;">
+      <p class="home-cta-text clickable">
         {data.hero.ctaText}
       </p>
     </div>
@@ -133,10 +102,44 @@
     background-color: rgba(0, 0, 0, 0);
   }
 
+  /* Full-grid video background — replaces div[grid-area] + .olly */
+  .home-bg {
+    grid-area: 1/1 / span 20 / span 20;
+    filter: saturate(140%);
+    position: relative;
+    overflow: hidden;
+  }
+
+  .home-figure {
+    position: absolute;
+    inset: 0;
+    margin: 0;
+    padding: 0;
+  }
+
+  .home-video {
+    position: absolute;
+    inset: 0;
+    width: 100%;
+    height: 100%;
+    object-fit: cover;
+  }
+
+  .home-video-desktop {
+    display: block !important;
+  }
+
+  .home-video-mobile {
+    display: none !important;
+  }
+
+  /* Text overlay */
   .home-text {
-    z-index: 9;
+    z-index: 5;
     grid-area: 9/1 / span 6 / span 20;
     width: 100%;
+    justify-self: center;
+    margin-top: 6vmax;
   }
 
   .home-subtitle {
@@ -146,37 +149,15 @@
     margin: auto;
   }
 
-  .olly {
-    position: absolute;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
-    overflow: hidden;
+  /* CTA button */
+  .home-cta {
+    margin: auto;
+    margin-top: 40px;
   }
 
-  .olly figure {
-    margin: 0;
-    padding: 0;
-    position: relative;
-    width: 100%;
-    height: 100%;
-  }
-
-  .home-video {
-    position: absolute;
-    top: 0;
-    left: 0;
-    width: 100%;
-    height: 100%;
-  }
-
-  .home-video-desktop {
-    display: block !important;
-  }
-
-  .home-video-mobile {
-    display: none !important;
+  .home-cta-text {
+    font-family: Terminal;
+    font-size: 1.2em;
   }
 
   @media screen and (max-width: 1000px) {