'init'

app/components/ThemeToggle.tsx

@@ -0,0 +1,36 @@
+"use client";
+
+import { useTheme } from "../providers/ThemeProvider";
+
+const SunIcon = () => (
+  <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+    <circle cx="12" cy="12" r="4" />
+    <path d="M12 2v2M12 20v2M4.93 4.93l1.41 1.41M17.66 17.66l1.41 1.41M2 12h2M20 12h2M6.34 17.66l-1.41 1.41M19.07 4.93l-1.41 1.41" />
+  </svg>
+);
+
+const MoonIcon = () => (
+  <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
+    <path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z" />
+  </svg>
+);
+
+export function ThemeToggle() {
+  const { resolvedTheme, setTheme } = useTheme();
+
+  const toggle = () => {
+    setTheme(resolvedTheme === "dark" ? "light" : "dark");
+  };
+
+  return (
+    <button
+      type="button"
+      onClick={toggle}
+      className="flex items-center justify-center rounded-full p-2 text-[var(--muted-foreground)] transition hover:bg-[var(--muted)] hover:text-[var(--foreground)]"
+      aria-label={resolvedTheme === "dark" ? "切换至日间模式" : "切换至夜间模式"}
+      title={resolvedTheme === "dark" ? "日间" : "夜间"}
+    >
+      {resolvedTheme === "dark" ? <SunIcon /> : <MoonIcon />}
+    </button>
+  );
+}