expertise : fix active text centering - related to #52

src/components/layout/Footer.svelte

@@ -111,6 +111,11 @@
     z-index: 2;
 
     transition: transform .3s var(--ease-standard);
+    pointer-events: none;
+  }
+
+  footer p, footer, a {
+    pointer-events: all;
   }
 
   :global(footer:not([data-template="white-paper"] footer)) {

src/views/Expertise.svelte

@@ -6,14 +6,17 @@
   let { data } = $props()
 
   // --- DOM refs ---
-  let videoFwd  = $state(null)
-  let videoRev  = $state(null)
-  let sectionEl = $state(null)
+  let videoFwd      = $state(null)
+  let videoRev      = $state(null)
+  let sectionEl     = $state(null)
+  let textContainer = $state(null)
+  let itemEls       = $state([])
 
   // --- State ---
   let isReverse   = $state(false)
   let duration    = $state(0)
   let currentItem = $state(0)
+  let offsetY     = $state(0)
 
   // --- Non-reactive ---
   let playhead   = 0     // forward-equivalent position, updated from timeupdate
@@ -39,6 +42,14 @@
     }
   })
 
+  function computeOffset() {
+    if (!textContainer || !itemEls[currentItem]) return
+    const wh          = window.innerHeight
+    const wrapperRect = textContainer.parentElement.getBoundingClientRect()
+    const el          = itemEls[currentItem]
+    offsetY = wh / 2 - wrapperRect.top - el.offsetTop - el.offsetHeight / 2
+  }
+
   function initVideo() {
     if (!videoFwd) return
     const start = () => {
@@ -47,6 +58,7 @@
       playhead = 0
       isReverse = false
       if (videoRev) videoRev.currentTime = duration
+      requestAnimationFrame(() => computeOffset())
       // Force first-frame decode (required on mobile Safari)
       videoFwd.play().then(() => videoFwd.pause()).catch(() => {})
     }
@@ -61,6 +73,7 @@
     playhead    = 0
     isReverse   = false
     currentItem = 0
+    offsetY     = 0
     if (videoFwd) { videoFwd.pause(); videoFwd.currentTime = 0 }
     if (videoRev) { videoRev.pause() }
   }
@@ -126,6 +139,7 @@
     clearTimeout(lockTimer)
     lockTimer = setTimeout(() => { canScroll = true }, 650)
 
+    requestAnimationFrame(() => { if (isActive) computeOffset() })
     dir === 'down' ? playForward() : playReverse()
   }
 
@@ -174,12 +188,17 @@
       if (e.key === 'ArrowDown') { e.preventDefault(); navigate('down') }
       if (e.key === 'ArrowUp')   { e.preventDefault(); navigate('up') }
     }
+    const onResize = () => { if (isActive) computeOffset() }
+    window.addEventListener('resize', onResize)
+    window.addEventListener('orientationchange', onResize)
     window.addEventListener('keydown', onKeyDown)
 
     return () => {
       sectionEl?.removeEventListener('wheel', onWheel)
       sectionEl?.removeEventListener('touchstart', onTouchStart)
       sectionEl?.removeEventListener('touchend', onTouchEnd)
+      window.removeEventListener('resize', onResize)
+      window.removeEventListener('orientationchange', onResize)
       window.removeEventListener('keydown', onKeyDown)
       videoFwd?.removeEventListener('timeupdate', onFwdTime)
       videoRev?.removeEventListener('timeupdate', onRevTime)
@@ -224,9 +243,13 @@
 
   <!-- Text items -->
   <div class="expertise-text-wrapper" aria-live="polite" aria-atomic="true">
-    <div class="expertise-text">
+    <div
+      class="expertise-text"
+      bind:this={textContainer}
+      style="transform: translateY({offsetY}px)"
+    >
       {#each items as item, i}
-        <div class="expertise-item" class:active={i === currentItem}>
+        <div class="expertise-item" class:active={i === currentItem} bind:this={itemEls[i]}>
           {@html item.text}
         </div>
       {/each}
@@ -287,6 +310,7 @@
   .expertise-text {
     position: relative;
     width: 100%;
+    transition: transform 0.6s var(--ease-standard);
   }
 
   .expertise-item {