.horizontal-menu {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: #212529;
  border-bottom: 1px solid #444;
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  white-space: nowrap;
  padding: 8px 16px;
}

.menu-item {
  position: relative;
  padding: 6px 12px;
  color: white;
  text-decoration: none;
  cursor: pointer;
  font-size: 14px;
  margin-right: 12px;
  border-radius: 4px;
  transition: background 0.3s ease;
}

.menu-item:hover {
  background-color: #343a40;
}

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  display: none;
  flex-direction: column;
  min-width: 180px;
  background-color: #343a40;
  border-radius: 4px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  z-index: 999;
}

.submenu a {
  padding: 8px 12px;
  color: white;
  text-decoration: none;
  font-size: 13px;
}

.submenu a:hover {
  background-color: #495057;
}

.menu-item.open .submenu {
  display: flex;
}

@media (max-width: 768px) {
  .horizontal-menu {
    padding: 6px 8px;
  }

  .menu-item {
    font-size: 12px;
    padding: 4px 8px;
    margin-right: 8px;
  }

  .submenu a {
    font-size: 12px;
    padding: 6px 10px;
  }
}