Fix home code copy button styles

Author: lambdalisue

static/home.css

@@ -222,6 +222,48 @@
   font-family: "JetBrains Mono", monospace;
 }
 
+/* Code block copy button (home page) */
+.code-block-wrapper {
+  position: relative;
+}
+
+.code-copy-btn {
+  position: absolute;
+  top: 0.5rem;
+  right: 0.5rem;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 28px;
+  height: 28px;
+  background: transparent;
+  border: none;
+  border-radius: 4px;
+  color: var(--text-muted);
+  opacity: 0;
+  cursor: pointer;
+  transition: all 0.2s;
+  z-index: 10;
+}
+
+.code-block-wrapper:hover .code-copy-btn {
+  opacity: 0.5;
+}
+
+.code-copy-btn:hover {
+  opacity: 1 !important;
+  background: var(--bg-card);
+}
+
+.code-copy-btn.copied {
+  color: #22c55e;
+  opacity: 1 !important;
+}
+
+.code-copy-btn i {
+  font-size: 16px;
+}
+
 /* ========================================
    Features Section
    ======================================== */