diff --git a/src/pages/blog/[...slug].astro b/src/pages/blog/[...slug].astro
index e666504..557965a 100644
--- a/src/pages/blog/[...slug].astro
+++ b/src/pages/blog/[...slug].astro
@@ -72,4 +72,39 @@ const crumbs = breadcrumb([
       }
     })();
   </script>
+
+  <style is:global>
+    .prose pre { position: relative; }
+    .copy-btn {
+      position: absolute; top: .45rem; right: .45rem;
+      font-size: .68rem; line-height: 1; padding: .35rem .6rem;
+      color: var(--color-muted); background: var(--color-surface-2);
+      border: 1px solid var(--color-border); border-radius: .5rem;
+      opacity: 0; transition: opacity .15s ease; cursor: pointer;
+    }
+    .prose pre:hover .copy-btn, .copy-btn:focus-visible { opacity: 1; }
+    .copy-btn:hover { color: var(--color-text); }
+  </style>
+  <script is:inline>
+    (function () {
+      if (window.__copycode) return; window.__copycode = true;
+      var enhance = function () {
+        document.querySelectorAll('.prose pre').forEach(function (pre) {
+          if (pre.querySelector('.copy-btn')) return;
+          var b = document.createElement('button');
+          b.className = 'copy-btn'; b.type = 'button'; b.textContent = 'kopiér';
+          b.addEventListener('click', function () {
+            var code = pre.querySelector('code');
+            navigator.clipboard.writeText(code ? code.innerText : pre.innerText).then(function () {
+              b.textContent = 'kopieret ✓';
+              setTimeout(function () { b.textContent = 'kopiér'; }, 1500);
+            });
+          });
+          pre.appendChild(b);
+        });
+      };
+      document.addEventListener('astro:page-load', enhance);
+      enhance();
+    })();
+  </script>
 </Base>