chore: remove unused code

ui/src/global.css

@@ -6,8 +6,6 @@
   :root {
     --background: 0 0% 100%;
     --foreground: 20 14.3% 4.1%;
-    --card: 0 0% 100%;
-    --card-foreground: 20 14.3% 4.1%;
     --popover: 0 0% 100%;
     --popover-foreground: 20 14.3% 4.1%;
     --primary: 24.6 95% 53.1%;
@@ -29,8 +27,6 @@
   .dark {
     --background: 20 14.3% 4.1%;
     --foreground: 60 9.1% 97.8%;
-    --card: 20 14.3% 4.1%;
-    --card-foreground: 60 9.1% 97.8%;
     --popover: 20 14.3% 4.1%;
     --popover-foreground: 60 9.1% 97.8%;
     --primary: 20.5 90.2% 48.2%;

ui/src/index.css

@@ -13,15 +13,6 @@
   -moz-osx-font-smoothing: grayscale;
 }
 
-a {
-  font-weight: 500;
-  color: #646cff;
-  text-decoration: inherit;
-}
-a:hover {
-  color: #535bf2;
-}
-
 body {
   margin: 0;
   display: flex;
@@ -29,40 +20,3 @@ body {
   min-width: 320px;
   min-height: 100vh;
 }
-
-h1 {
-  font-size: 3.2em;
-  line-height: 1.1;
-}
-
-button {
-  border-radius: 8px;
-  border: 1px solid transparent;
-  padding: 0.6em 1.2em;
-  font-size: 1em;
-  font-weight: 500;
-  font-family: inherit;
-  background-color: #1a1a1a;
-  cursor: pointer;
-  transition: border-color 0.25s;
-}
-button:hover {
-  border-color: #646cff;
-}
-button:focus,
-button:focus-visible {
-  outline: 4px auto -webkit-focus-ring-color;
-}
-
-@media (prefers-color-scheme: light) {
-  :root {
-    color: #213547;
-    background-color: #ffffff;
-  }
-  a:hover {
-    color: #747bff;
-  }
-  button {
-    background-color: #f9f9f9;
-  }
-}

ui/tailwind.config.js

@@ -43,10 +43,6 @@ module.exports = {
           DEFAULT: "hsl(var(--popover))",
           foreground: "hsl(var(--popover-foreground))",
         },
-        card: {
-          DEFAULT: "hsl(var(--card))",
-          foreground: "hsl(var(--card-foreground))",
-        },
       },
       borderRadius: {
         lg: "var(--radius)",