feat: use label and legend for boxes

src/app/_components/bordered-box.tsx

@@ -11,57 +11,18 @@ export function BorderedBox({
   children,
   className = "",
 }: BorderedBoxProps) {
-  // Generate unique ID for this instance to avoid conflicts
-  const maskId = `borderMask-${Math.random().toString(36).substring(2, 11)}`;
-
-  // Calculate SVG mask values - approximate 1ch = 16px for IBM VGA font
-  const chToPx = 16;
-  const maskX = 4 + chToPx; // 4px + 1ch
-  const maskWidth = label ? label.length * chToPx : 0;
-
   return (
-    <div
-      className={`relative my-[calc(2ch-2px)] px-[calc(1.5ch-0.5px)] py-[1ch] ${className}`}
+    <fieldset
+      className={`my-[calc(2ch-2px)] border-2 border-white px-[calc(1.5ch-0.5px)] pb-[1ch] pt-0 ${className}`}
     >
-      <div
-        className="absolute inset-0 border-2 border-white"
-        style={{
-          maskImage: label ? `url(#${maskId})` : "none",
-          WebkitMaskImage: label ? `url(#${maskId})` : "none",
-        }}
-      />
-
       {label && (
-        <svg
-          className="pointer-events-none absolute inset-0 h-full w-full"
-          style={{ zIndex: 1 }}
-        >
-          <defs>
-            <mask id={maskId}>
-              <rect width="100%" height="100%" fill="white" />
-              <rect
-                x={maskX}
-                y="-8"
-                width={maskWidth}
-                height="16"
-                fill="black"
-              />
-            </mask>
-          </defs>
-        </svg>
-      )}
-
-      {label && (
-        <span
-          className="absolute -top-[1ch] bg-transparent text-white"
-          style={{ zIndex: 2 }}
-        >
+        <legend className="-mx-[0.5ch] px-[0.5ch] text-white">
           {label}
-        </span>
+        </legend>
       )}
 
-      <div className="relative z-10">{children}</div>
-    </div>
+      {children}
+    </fieldset>
   );
 }