#sidebar {
  display: none;
  position: fixed;
  top: 0;
  left: -250px;
  height: 100%;
  width: 250px;
  background-color: #fff;
  box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  transition: left 0.3s ease-in-out;
  overflow-y: auto;
}

#sidebar.active {
  left: 0;
}

#sidebar ul {
  list-style-type: none;
  padding: 0;
}

#sidebar li {
  padding: 10px 15px;
  border-bottom: 1px solid #eee;
}

#sidebar a {
  text-decoration: none;
  color: #333;
  display: block;
  padding: 8px;
  width: 100%;
  box-sizing: border-box;
}

#sidebar .submenu {
  display: none;
  padding-left: 15px;
}

#sidebar .submenu li {
  border-bottom: none;
  padding: 5px 0;
}

#sidebar .logo {
  text-align: center;
  padding: 20px 0;
  border-bottom: 2px solid #eee;
}

#sidebar .logo img {
  max-width: 80%;
  height: auto;
}

#sidebar .contact-button a {
  background-color: var(--primary-color);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

#sidebar .contact-button i {
  margin-right: 10px;
}

#hamburger {
  display: none;
  cursor: pointer;
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1001;
  transition: top 0.5s;
}

#hamburger span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: #333;
  margin: 5px 0;
  transition: 0.4s;
}

#sidebar .dropdown > a .ri-arrow-down-s-line {
  font-size: 1.2em;
  vertical-align: middle;
  margin-left: 5px;
}

@media (max-width: 768px) {
  #sidebar {
    display: block;
  }

  #hamburger {
    display: block;
  }
}