Refactor UI components for consistency and clarity across the application

- Updated AGENTS.md with new guidelines for UI consistency, including badge and modal styles.
- Refactored layout.tsx to improve the placement of the progressive blur effect.
- Enhanced NotFound component text for better user guidance.
- Replaced HeroFocusButton with HeroBaslik and KapanisCta in the Home component for improved clarity.
- Added SiteFooter to multiple pages for consistent footer display.
- Removed ListemSekmeleri component and adjusted ListemPage to streamline functionality.
- Updated various components to ensure consistent styling and user experience.

src/components/ui/dialog.tsx

@@ -69,16 +69,12 @@ function DialogContent({
       >
         {children}
         {showCloseButton && (
-          <DialogPrimitive.Close data-slot="dialog-close" asChild>
-            <Button
-              variant="ghost"
-              className="absolute top-2 right-2"
-              size="icon-sm"
-            >
-              <XIcon
-              />
-              <span className="sr-only">Close</span>
-            </Button>
+          <DialogPrimitive.Close
+            data-slot="dialog-close"
+            className="absolute top-3 right-3 z-10 flex size-9 cursor-pointer items-center justify-center rounded-full border border-slate-200 bg-popover text-slate-500 transition-[background-color,transform] duration-150 hover:bg-slate-100 hover:text-slate-800 active:scale-[0.96]"
+          >
+            <XIcon className="size-4" aria-hidden />
+            <span className="sr-only">Kapat</span>
           </DialogPrimitive.Close>
         )}
       </DialogPrimitive.Content>