/* Navbar base */
.navbar-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.navbar-nav > li {
  position: relative;
  display: inline-block;
}

.navbar-nav > li > a,
.dropdown-menu a {
  display: block;
  padding: 12px 18px;
  text-decoration: none;
  color: #333;
  background-color: #fff;
  white-space: nowrap;
}

.navbar-nav > li:hover > a {
  background-color: #f4f4f4;
}

/* First level dropdown */
.dropdown-menu {
  position: absolute;
  display: none;
  background: #fff;
  min-width: 220px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
  z-index: 1000;
}

.navbar-nav > li.has-dropdown:hover > .dropdown-menu {
  display: block;
}

/* Submenu inside dropdown */
.dropdown-menu .has-dropdown {
  position: relative;
}

.dropdown-menu .sub-menu {
  display: none;
  position: absolute;
  left: 100%;
  top: 0;
  background: #fff;
  min-width: 200px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
  z-index: 1001;
}

.dropdown-menu .has-dropdown:hover > .sub-menu {
  display: block;
}

/* Optional hover effect */
.dropdown-menu a:hover,
.sub-menu a:hover {
  background-color: #f0f0f0;
  color: #000;
}

@media (min-width: 769px) {
  .sub-menu {
    padding-left: 20px;
    padding-right: 20px;
  }

  .sub-menu li a {
    padding-left: 10px;
    padding-right: 10px;
  }
}