Add responsive styles for sidebar container and items

Author: NovaDev404

web/styles.css

@@ -237,3 +237,84 @@ body {
   }
 }
 
+
+
+/* ---------- container for gradient & clipping ---------- */
+/* keep this minimal and scoped to mobile portrait where .sidebar is horizontal */
+.sidebar-container {
+  /* default: no visual change on desktop */
+  display: block;
+  position: relative;
+  overflow: visible;
+}
+
+/* only apply mobile top-bar behaviour in portrait (matches your existing rules) */
+@media (max-width: 900px) and (orientation: portrait) {
+  .sidebar-container {
+    /* container handles the gradient/clip while .sidebar scrolls inside it */
+    overflow: hidden;
+    padding: 10px 0;        /* keep same spacing you used */
+    background: var(--sidebar);
+    border-radius: 14px;
+    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
+  }
+
+  /* the actual scrolling row */
+  .sidebar {
+    display: flex;
+    gap: 6px;
+    padding-left: 14px;     /* match your existing .sidebar padding */
+    overflow-x: auto;
+    overflow-y: hidden;
+    -webkit-overflow-scrolling: auto; /* help iOS not fade too quickly */
+    scrollbar-width: thin; /* firefox hint */
+  }
+
+  /* webkit scrollbar style for small phones */
+  .sidebar::-webkit-scrollbar {
+    height: 6px;
+  }
+  .sidebar::-webkit-scrollbar-thumb {
+    background: rgba(0,0,0,0.28);
+    border-radius: 3px;
+  }
+
+  /* gradient fixed to the container's right edge (affordance) */
+  .sidebar-container::after {
+    content: '';
+    position: absolute;
+    top: 0;
+    right: 0;
+    height: 100%;
+    width: 44px; /* hint width; tweak to taste */
+    pointer-events: none;
+    background: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,1));
+    transition: opacity .18s ease, right .18s ease;
+    opacity: 1;
+    border-top-right-radius: 14px;
+    border-bottom-right-radius: 14px;
+  }
+
+  /* hide gradient when scrolled to end OR when no overflow */
+  .sidebar-container.scrolled-end::after,
+  .sidebar-container.no-overflow::after {
+    opacity: 0;
+    pointer-events: none;
+  }
+
+  /* small adjustment so the gradient doesn't fully cover last item */
+  .sidebar-item:last-child {
+    margin-right: 12px;
+  }
+}
+
+/* landscape (left vertical) behaviour remains unchanged, no gradient */
+@media (max-width: 900px) and (orientation: landscape) {
+  /* keep your existing landscape rules */
+  .sidebar {
+    width: 220px;
+    flex-direction: column;
+    overflow-x: hidden;
+    overflow-y: auto;
+  }
+}