fix: thumbnail sizing, parallax hover effect, login logo size

Thumbnail: explicit top/left/right/bottom + width/height on the img so
object-fit has a well-defined box in all browsers (inset shorthand alone
was underspecified for some).

Hover effect: the card already rises translateY(-3px) on hover. Add a
matching translateY(+3px) counter-transform on the thumbnail image so
its net viewport motion is zero — the document preview appears to float
in place while the gradient tile and card body lift up around it.

Login logo: raise max-width from 300px to 400px now that the competing
inline style has been removed from the pug template.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/web/frontend/stylesheets/pages/login-register.scss

@@ -47,7 +47,7 @@
   .verso-login-logo {
     display: block;
     margin: 0 auto;
-    max-width: 300px !important;
+    max-width: 400px;
   }
 }
 

services/web/frontend/stylesheets/pages/project-list-lumiere.scss

@@ -540,13 +540,26 @@ $lum-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' wi
 
   // Thumbnail image — shown when the project has a cached compiled PDF page.
   // Falls back to the gradient + initial when the image 404s or is loading.
+  // The counter-transform on hover keeps the image visually stationary while
+  // the card rises beneath it (matching the card's translateY(-3px) lift).
   .lumiere-card-thumb-img {
     position: absolute;
-    inset: 6px;
+    top: 6px;
+    left: 6px;
+    right: 6px;
+    bottom: 6px;
+    width: calc(100% - 12px);
+    height: calc(100% - 12px);
     object-fit: cover;
     object-position: top center;
     border-radius: 4px;
     z-index: 1;
+    transition: transform 0.18s ease;
+  }
+
+  .lumiere-card:hover .lumiere-card-thumb-img,
+  .lumiere-card:focus-within .lumiere-card-thumb-img {
+    transform: translateY(3px);
   }
 
   .lumiere-card-initial {