feat(ui3): elegant earthy task feed redesign

src/app/globals.css

@@ -65,13 +65,16 @@
 
   /* ========== RADI ========== */
   --radius-sm: 0.375rem;
-  --radius-card: 0.625rem;
+  --radius-card: 1.5rem; /* rounded-3xl for soft feel */
+  --radius-xl: 1.5rem; /* rounded-3xl */
   --radius-modal: 1rem;
   --radius-pill: 9999px;
 
   /* ========== SHADOWS ========== */
   --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
   --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
+  --shadow-soft-lg: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
+  --shadow-soft-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
 
   /* ========== TYPOGRAPHY ========== */
   --font-ui-stack: 'Segoe UI', system-ui, -apple-system, sans-serif;
@@ -227,6 +230,10 @@ body {
   -webkit-backdrop-filter: blur(24px) saturate(120%);
 }
 
+.bg-earthy-gradient {
+  background: linear-gradient(to bottom right, #2D2D2D, #363636);
+}
+
 /* Shared dark form controls to avoid white-on-white browser defaults */
 .ui-field {
   border: 1px solid rgba(255, 255, 255, 0.1);