feat(ui): align top navigation capsules with GL glass header

app/assets/css/main.css

@@ -69,27 +69,123 @@ body {
   box-shadow: 0 20px 48px color-mix(in oklab, var(--color-primary) 14%, transparent);
 }
 
-.glass-capsule {
-  border: 1px solid rgba(255, 255, 255, 0.42);
-  background: linear-gradient(120deg, rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.12));
-  backdrop-filter: blur(10px);
-  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45);
+.fregat-header-glass {
+  background: transparent;
+}
+
+.fregat-header-backdrop {
+  position: absolute;
+  inset: 0;
+  height: 300%;
+  background: rgba(255, 255, 255, 0.06);
+  -webkit-backdrop-filter: blur(16px) saturate(180%);
+  backdrop-filter: blur(16px) saturate(180%);
+  -webkit-mask-image: linear-gradient(to bottom, black 0%, black 22%, rgba(0, 0, 0, 0.35) 46%, rgba(0, 0, 0, 0.1) 70%, transparent 100%);
+  mask-image: linear-gradient(to bottom, black 0%, black 22%, rgba(0, 0, 0, 0.35) 46%, rgba(0, 0, 0, 0.1) 70%, transparent 100%);
+  pointer-events: none;
+  z-index: 0;
+}
+
+.fregat-header-row {
+  gap: 0.5rem;
+  --fregat-pill-shell-px: 0.5rem;
+  --fregat-pill-shell-py: 0.5rem;
+}
+
+.fregat-pill-shell {
+  padding-inline: var(--fregat-pill-shell-px);
+  padding-block: var(--fregat-pill-shell-py);
+}
+
+.fregat-pill-glass {
+  position: relative;
+  isolation: isolate;
+  background: rgba(255, 255, 255, 0.16);
+  border: 1px solid rgba(255, 255, 255, 0.22);
+  -webkit-backdrop-filter: blur(20px) saturate(180%);
+  backdrop-filter: blur(20px) saturate(180%);
+  box-shadow:
+    0 8px 32px rgba(31, 38, 135, 0.16),
+    inset 0 4px 20px rgba(255, 255, 255, 0.2);
+}
+
+.fregat-pill-glass::after {
+  content: '';
+  position: absolute;
+  inset: 0;
+  z-index: 0;
+  border-radius: inherit;
+  background: rgba(255, 255, 255, 0.12);
+  box-shadow:
+    inset -10px -8px 0 -11px rgba(255, 255, 255, 1),
+    inset 0 -9px 0 -8px rgba(255, 255, 255, 1);
+  opacity: 0.35;
+  filter: blur(1px) brightness(112%);
+  pointer-events: none;
+}
+
+.fregat-pill-glass > * {
+  position: relative;
+  z-index: 1;
+}
+
+.fregat-pill-left,
+.fregat-pill-right {
+  flex: 0 0 auto;
+}
+
+.fregat-pill-center {
+  min-width: 0;
 }
 
 .lk-nav-link {
   @apply inline-flex items-center gap-2 rounded-full px-4 py-2 text-sm font-semibold transition-all duration-200;
-  color: rgba(255, 255, 255, 0.85);
+  color: color-mix(in oklab, var(--color-base-content) 78%, transparent);
 }
 
 .lk-nav-link:hover {
-  background: rgba(255, 255, 255, 0.2);
-  color: #ffffff;
+  background: rgba(255, 255, 255, 0.44);
+  color: var(--color-base-content);
 }
 
 .lk-nav-link-active {
-  background: #ffffff;
-  color: var(--brand-primary-deep);
-  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.13);
+  background: color-mix(in oklab, var(--color-primary) 86%, white);
+  color: var(--color-primary-content);
+  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.11);
+}
+
+@media (min-width: 1024px) {
+  .fregat-header-row {
+    min-height: 3rem;
+    --fregat-pill-shell-px: 0.75rem;
+  }
+
+  .fregat-pill-brand,
+  .fregat-pill-left,
+  .fregat-pill-center,
+  .fregat-pill-right {
+    position: absolute;
+    top: 0;
+  }
+
+  .fregat-pill-brand {
+    left: 0;
+  }
+
+  .fregat-pill-left {
+    left: 7.25rem;
+  }
+
+  .fregat-pill-center {
+    left: 50%;
+    width: max-content;
+    max-width: min(58vw, 900px);
+    transform: translateX(-50%);
+  }
+
+  .fregat-pill-right {
+    right: 0;
+  }
 }
 
 .product-card-anim {