.upx-sidebar {
  position: fixed;
  top: 0;
  right: -250px; /* скрыто */
  width: 250px;
  height: 100vh;
  background-color: #343a40;
  color: #fff;
  padding: 20px;
  box-sizing: border-box;
  transition: right 0.3s ease;
  z-index: 1050;
  overflow-y: auto;
}

.upx-sidebar.active {
  right: 0;
}

.upx-sidebar-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.upx-sidebar-nav li {
  margin-bottom: 1rem;
}

.upx-sidebar-nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  display: block;
}

.upx-sidebar-nav a:hover {
  color: #ffc107;
}

.upx-sidebar-overlay {
  position: fixed;
  top: 0; right: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
  z-index: 1040;
}

.upx-sidebar-overlay.active {
  opacity: 1;
  visibility: visible;
}