feat: implement MenuButton component and home page layout with global glassmorphism styles

components/MenuButton.module.css

@@ -4,60 +4,53 @@
   align-items: center;
   justify-content: center;
   gap: 1rem;
-  padding: 2rem 1.5rem;
+  padding: 2rem 1.25rem 1.75rem;
   text-decoration: none;
   color: var(--fg);
-  min-height: 180px;
+  width: 160px;
+  aspect-ratio: 1 / 1;
   cursor: pointer;
+  background: var(--card-bg);
+  backdrop-filter: blur(24px) saturate(1.4);
+  -webkit-backdrop-filter: blur(24px) saturate(1.4);
+  border: 1px solid var(--card-border);
+  box-shadow: var(--card-shadow);
+  border-radius: 22px;
+  transition: all 240ms cubic-bezier(0.4, 0, 0.2, 1);
   position: relative;
   overflow: hidden;
 }
 
-/* Glow accent on hover */
-.menuButton::after {
-  content: '';
-  position: absolute;
-  inset: 0;
-  border-radius: inherit;
-  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
-  opacity: 0;
-  transition: opacity 280ms cubic-bezier(0.4, 0, 0.2, 1);
-  pointer-events: none;
+.menuButton:hover {
+  background: var(--card-hover-bg);
+  box-shadow: var(--card-hover-shadow);
+  transform: translateY(-5px) scale(1.02);
 }
 
-.menuButton:hover::after {
-  opacity: 1;
+.menuButton:active {
+  transform: scale(0.97);
+  transition-duration: 80ms;
 }
 
-/* Favicon wrapper */
+/* Favicon */
 .faviconWrapper {
-  width: 64px;
-  height: 64px;
-  border-radius: 16px;
-  background: var(--glass-bg);
-  border: 1px solid var(--glass-border);
+  width: 56px;
+  height: 56px;
+  border-radius: 14px;
   display: flex;
   align-items: center;
   justify-content: center;
   overflow: hidden;
-  transition: transform 280ms cubic-bezier(0.4, 0, 0.2, 1), box-shadow 280ms cubic-bezier(0.4, 0, 0.2, 1);
-  flex-shrink: 0;
-  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
-}
-
-.menuButton:hover .faviconWrapper {
-  transform: scale(1.08);
-  box-shadow: 0 8px 24px var(--accent-glow);
 }
 
 .favicon {
-  width: 40px;
-  height: 40px;
+  width: 48px;
+  height: 48px;
   object-fit: contain;
 }
 
 .faviconFallback {
-  color: var(--accent);
+  color: rgba(255,255,255,0.7);
   display: flex;
   align-items: center;
   justify-content: center;
@@ -65,29 +58,13 @@
 
 /* Label */
 .label {
-  font-size: 0.95rem;
+  font-size: 0.82rem;
   font-weight: 600;
-  letter-spacing: -0.02em;
   text-align: center;
-  line-height: 1.3;
-  max-width: 160px;
+  letter-spacing: -0.01em;
+  color: var(--fg);
+  max-width: 130px;
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
 }
-
-/* Arrow indicator */
-.arrowIcon {
-  position: absolute;
-  top: 12px;
-  right: 14px;
-  color: var(--fg-secondary);
-  opacity: 0;
-  transform: translate(-4px, 4px);
-  transition: all 280ms cubic-bezier(0.4, 0, 0.2, 1);
-}
-
-.menuButton:hover .arrowIcon {
-  opacity: 1;
-  transform: translate(0, 0);
-}