Implement theme provider and settings page for customizable appearance

app/globals.css

@@ -41,6 +41,126 @@ body {
     --chart-5: 27 87% 67%;
   }
 
+  @tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+body {
+  font-family: Arial, Helvetica, sans-serif;
+}
+
+@layer utilities {
+  .text-balance {
+    text-wrap: balance;
+  }
+}
+
+@layer base {
+  :root {
+    --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: 217.2 91.2% 59.8%;
+    --primary-foreground: 222.2 47.4% 11.2%;
+    --secondary: 217.2 32.6% 17.5%;
+    --secondary-foreground: 0 0% 98%;
+    --muted: 217.2 32.6% 17.5%;
+    --muted-foreground: 215 20.2% 65.1%;
+    --accent: 217.2 32.6% 17.5%;
+    --accent-foreground: 0 0% 98%;
+    --destructive: 0 62.8% 30.6%;
+    --destructive-foreground: 0 0% 98%;
+    --border: 217.2 32.6% 17.5%;
+    --input: 217.2 32.6% 17.5%;
+    --ring: 224.3 76.3% 48%;
+    --chart-1: 220 70% 50%;
+    --chart-2: 160 60% 45%;
+    --chart-3: 30 80% 55%;
+    --chart-4: 280 65% 60%;
+    --chart-5: 340 75% 55%;
+    --hover: 240 27% 11%;
+  }
+
+
+  /* Blue Theme Dark */
+  .theme-blue.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: 217.2 91.2% 59.8%;
+    --primary-foreground: 222.2 47.4% 11.2%;
+    --secondary: 217.2 32.6% 17.5%;
+    --secondary-foreground: 0 0% 98%;
+    --muted: 217.2 32.6% 17.5%;
+    --muted-foreground: 215 20.2% 65.1%;
+    --accent: 217.2 32.6% 17.5%;
+    --accent-foreground: 0 0% 98%;
+    --destructive: 0 62.8% 30.6%;
+    --destructive-foreground: 0 0% 98%;
+    --border: 217.2 32.6% 17.5%;
+    --input: 217.2 32.6% 17.5%;
+    --ring: 224.3 76.3% 48%;
+    --hover: 240 27% 11%;
+  }
+
+  /* Violet Theme Dark */
+  .theme-violet.dark {
+    --background: 224 71.4% 4.1%;
+    --foreground: 210 20% 98%;
+    --card: 224 71.4% 4.1%;
+    --card-foreground: 210 20% 98%;
+    --popover: 224 71.4% 4.1%;
+    --popover-foreground: 210 20% 98%;
+    --primary: 263.4 70% 50.4%;
+    --primary-foreground: 210 20% 98%;
+    --secondary: 215 27.9% 16.9%;
+    --secondary-foreground: 210 20% 98%;
+    --muted: 215 27.9% 16.9%;
+    --muted-foreground: 217.9 10.6% 64.9%;
+    --accent: 215 27.9% 16.9%;
+    --accent-foreground: 210 20% 98%;
+    --destructive: 0 62.8% 30.6%;
+    --destructive-foreground: 210 20% 98%;
+    --border: 215 27.9% 16.9%;
+    --input: 215 27.9% 16.9%;
+    --ring: 263.4 70% 50.4%;
+  }
+
+  /* Default dark mode (fallback) */
+  .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: 217.2 91.2% 59.8%;
+    --primary-foreground: 222.2 47.4% 11.2%;
+    --secondary: 217.2 32.6% 17.5%;
+    --secondary-foreground: 0 0% 98%;
+    --muted: 217.2 32.6% 17.5%;
+    --muted-foreground: 215 20.2% 65.1%;
+    --accent: 217.2 32.6% 17.5%;
+    --accent-foreground: 0 0% 98%;
+    --destructive: 0 62.8% 30.6%;
+    --destructive-foreground: 0 0% 98%;
+    --border: 217.2 32.6% 17.5%;
+    --input: 217.2 32.6% 17.5%;
+    --ring: 224.3 76.3% 48%;
+    --chart-1: 220 70% 50%;
+    --chart-2: 160 60% 45%;
+    --chart-3: 30 80% 55%;
+    --chart-4: 280 65% 60%;
+    --chart-5: 340 75% 55%;
+    --hover: 240 27% 11%;
+  }
+}
   .dark {
     --background: 240 10% 3.9%;
     --foreground: 0 0% 98%;
@@ -77,7 +197,7 @@ body {
 ::selection { background-color: var(rgb(59 130 246)); }
 ::marker { color: var(rgb(59 130 246)); }
 
-  
+
 ::selection {
   background: var(--primary);
 }