updated globals colors

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[!IMPORTANT] Updated color variables in globals.css and adjusted CodeEditor component to use new colors.

• CSS Variables:
  • Updated color variables in globals.css for --background, --foreground, --card, --popover, --secondary, and their foreground counterparts.
• Code Editor Component:
  • Changed bg-secondary to bg-card in code-editor.tsx for the div and CodeMirror component.

^{This description was created by for dbe762d9fc3d6883a53b3a5f81cb49083ac64c5a. It will automatically update as commits are pushed.}