bak

public/css/style.css

@@ -220,6 +220,10 @@ body::after {
     transform: rotate(45deg); margin-top: -2px;
 }
 .card-dragging { opacity: 0.15; transform: scale(0.95); }
+.box-select {
+    position: absolute; border: 1px solid var(--t-accent); background: rgba(56, 189, 248, 0.08);
+    pointer-events: none; z-index: 10;
+}
 
 /* Drop indicators — thick glowing bar */
 .card-drop-before::before,