feat: integrate shadcn/ui, add Button component, and refactor App UI

frontend/input.css

@@ -16,8 +16,150 @@
     }
 }
 
+@layer base {
+
+    :root {
+        --background: 0 0% 100%;
+        --foreground: 240 10% 3.9%;
+
+        --card: 0 0% 100%;
+        --card-foreground: 240 10% 3.9%;
+
+        --popover: 0 0% 100%;
+        --popover-foreground: 240 10% 3.9%;
+
+        --primary: 240 5.9% 10%;
+        --primary-foreground: 0 0% 98%;
+
+        --secondary: 240 4.8% 95.9%;
+        --secondary-foreground: 240 5.9% 10%;
+
+        --muted: 240 4.8% 95.9%;
+        --muted-foreground: 240 3.8% 46.1%;
+
+        --accent: 240 4.8% 95.9%;
+        --accent-foreground: 240 5.9% 10%;
+
+        --destructive: 0 84.2% 60.2%;
+        --destructive-foreground: 0 0% 98%;
+
+        --border: 240 5.9% 90%;
+        --input: 240 5.9% 90%;
+        --ring: 240 10% 3.9%;
+
+        --radius: 0.5rem;
+    }
+
+    .dark {
+        --background: 240 10% 3.9%;
+        --foreground: 0 0% 98%;
+
+        --card: 240 10% 3.9%;
+        --card-foreground: 0 0% 98%;
+
+        --popover: 240 10% 3.9%;
+        --popover-foreground: 0 0% 98%;
+
+        --primary: 0 0% 98%;
+        --primary-foreground: 240 5.9% 10%;
+
+        --secondary: 240 3.7% 15.9%;
+        --secondary-foreground: 0 0% 98%;
+
+        --muted: 240 3.7% 15.9%;
+        --muted-foreground: 240 5% 64.9%;
+
+        --accent: 240 3.7% 15.9%;
+        --accent-foreground: 0 0% 98%;
+
+        --destructive: 0 62.8% 30.6%;
+        --destructive-foreground: 0 0% 98%;
+
+        --border: 240 3.7% 15.9%;
+        --input: 240 3.7% 15.9%;
+        --ring: 240 4.9% 83.9%;
+    }
+
+    .amoled {
+        --background: 0 0% 0%;
+        --foreground: 0 0% 98%;
+        --card: 0 0% 0%;
+        --card-foreground: 0 0% 98%;
+        --popover: 0 0% 0%;
+        --popover-foreground: 0 0% 98%;
+        --primary: 0 0% 98%;
+        --primary-foreground: 0 0% 0%;
+        --secondary: 0 0% 9%;
+        --secondary-foreground: 0 0% 98%;
+        --muted: 0 0% 9%;
+        --muted-foreground: 0 0% 60%;
+        --accent: 0 0% 9%;
+        --accent-foreground: 0 0% 98%;
+        --destructive: 0 62.8% 30.6%;
+        --destructive-foreground: 0 0% 98%;
+        --border: 0 0% 12%;
+        --input: 0 0% 12%;
+        --ring: 0 0% 83.9%;
+    }
+
+    * {
+        @apply border-border;
+    }
+}
+
 @theme {
-    --color-gray-900: #111827;
-    --color-gray-800: #1f2937;
-    --color-gray-700: #374151;
+    --color-background: hsl(var(--background));
+    --color-foreground: hsl(var(--foreground));
+
+    --color-card: hsl(var(--card));
+    --color-card-foreground: hsl(var(--card-foreground));
+
+    --color-popover: hsl(var(--popover));
+    --color-popover-foreground: hsl(var(--popover-foreground));
+
+    --color-primary: hsl(var(--primary));
+    --color-primary-foreground: hsl(var(--primary-foreground));
+
+    --color-secondary: hsl(var(--secondary));
+    --color-secondary-foreground: hsl(var(--secondary-foreground));
+
+    --color-muted: hsl(var(--muted));
+    --color-muted-foreground: hsl(var(--muted-foreground));
+
+    --color-accent: hsl(var(--accent));
+    --color-accent-foreground: hsl(var(--accent-foreground));
+
+    --color-destructive: hsl(var(--destructive));
+    --color-destructive-foreground: hsl(var(--destructive-foreground));
+
+    --color-border: hsl(var(--border));
+    --color-input: hsl(var(--input));
+    --color-ring: hsl(var(--ring));
+
+    --radius-lg: var(--radius);
+    --radius-md: calc(var(--radius) - 2px);
+    --radius-sm: calc(var(--radius) - 4px);
+
+    --animate-accordion-down: accordion-down 0.2s ease-out;
+    --animate-accordion-up: accordion-up 0.2s ease-out;
+
+    @keyframes accordion-down {
+        from {
+            height: 0
+        }
+
+        to {
+            height: var(--radix-accordion-content-height)
+        }
+    }
+
+    @keyframes accordion-up {
+        from {
+            height: var(--radix-accordion-content-height)
+        }
+
+        to {
+            height: 0
+        }
+    }
 }