feat: update ui

Signed-off-by: kjuulh <contact@kjuulh.io>

static/css/input.css

@@ -1,4 +1,28 @@
 @import "tailwindcss";
+@source "../../templates";
+
+/* ── Scrollbar-hidden utility for tab navigation ──────────────────────── */
+@utility scrollbar-none {
+  -ms-overflow-style: none;
+  scrollbar-width: none;
+  &::-webkit-scrollbar {
+    display: none;
+  }
+}
+
+/* ── Mobile/Desktop visibility ────────────────────────────────────────── */
+@utility mobile-only {
+  display: none;
+  @media (max-width: 39.999rem) {
+    display: block;
+  }
+}
+
+@utility desktop-only {
+  @media (max-width: 39.999rem) {
+    display: none;
+  }
+}
 
 /* ── Dark mode (system preference) ──────────────────────────────────────── */
 /* Remap Tailwind's color variables so all existing utilities adapt automatically. */