.sdb-builder-wrap { max-width:1200px; margin:20px auto; position:relative; }
.sdb-toolbar { position:fixed; left:0; top:60px; bottom:20px; width:240px; background:#f5f5f5; padding:12px; box-shadow:2px 2px 8px rgba(0,0,0,0.05); overflow:auto; z-index:10000; }
.sdb-element { padding:10px; border:1px solid #ddd; margin-bottom:8px; background:#fff; cursor:pointer; }
.sdb-canvas { margin-left:260px; padding:20px; min-height:500px; border:2px dashed #eee; background:#fff; box-sizing:border-box; }
.sdb-canvas .sdb-canvas-item { padding:12px; border:1px dashed #ccc; margin-bottom:12px; background:#fafafa; position:relative; cursor:grab; }
.sdb-item-controls { position:absolute; right:8px; top:8px; font-size:13px; }
.sdb-item-controls a { margin-left:6px; cursor:pointer; color:#0073aa; }
.sdb-actions { position:fixed; right:20px; top:20px; z-index:10001; }
.sdb-button { display:inline-block; padding:10px 16px; background:#0073aa; color:#fff; text-decoration:none; border-radius:6px; }
@media(max-width:900px) {
  .sdb-toolbar { display:none; position:static; width:100%; }
  .sdb-canvas { margin-left:0; }
}