feat: 세션 진행화면 생성

src/app/globals.css

@@ -123,3 +123,28 @@
     @apply bg-background text-foreground;
   }
 }
+
+@layer utilities {
+  @keyframes twinkle {
+    0%, 100% { opacity: 0.8; transform: scale(1); }
+    50% { opacity: 0.3; transform: scale(0.8); }
+  }
+  .animate-twinkle {
+    animation: twinkle 4s ease-in-out infinite;
+  }
+  .animate-twinkle-delay-1 {
+    animation: twinkle 5s ease-in-out infinite;
+    animation-delay: 1s;
+  }
+  .animate-twinkle-delay-2 {
+    animation: twinkle 6s ease-in-out infinite;
+    animation-delay: 2s;
+  }
+
+  @media (prefers-reduced-motion: reduce) {
+    .animate-twinkle, .animate-twinkle-delay-1, .animate-twinkle-delay-2 {
+      animation: none;
+      opacity: 0.8;
+    }
+  }
+}