* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Open Sans", sans-serif;
}

nav {
  background-color: rgb(2, 57, 2);
  position: relative;
  width: 100%;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav h1 {
  color: #fff;
  font-size: 36px;
}

ul.menu {
  display: flex;
  list-style: none;
}

ul.menu li {
  position: relative;
}

ul.menu li a,
ul.menu li h4 {
  color: #fff;
  padding: 15px 20px;
  display: block;
  cursor: pointer;
  text-decoration: none;
}


ul.menu li ul {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #fff; 
  min-width: 180px;
  z-index: 99;
  transition: background 0.3s ease;
}

ul.menu li ul li a {
  padding: 10px 15px;
  color: #000;
  border-bottom: none;
  transition: background 0.3s ease, color 0.3s ease;
}


@media (min-width: 769px) {
  ul.menu li:hover > ul {
    display: block;
  }
  ul.menu li ul li a:hover {
    background-color: rgb(2, 57, 2);
    color: #fff;
  }
}

.burger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.burger span {
  height: 3px;
  width: 25px;
  background: #fff;
  margin: 4px 0;
  border-radius: 3px;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .burger {
    display: flex;
  }

  ul.menu {
    flex-direction: column;
    display: none;
    width: 100%;
    background-color: rgb(2, 57, 2);
    padding: 0; 
    margin: 0;  
  }

  ul.menu.show {
    display: flex;
  }

  ul.menu li ul {
    position: static;
    background-color: rgb(2, 57, 2); 
    padding: 0;
    margin: 0;
  }

  ul.menu li.open > ul {
    display: flex;
    flex-direction: column;
  }

  ul.menu li a,
  ul.menu li h4 {
    padding: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1); 
  }

  ul.menu li ul li a {
    border-bottom: none; 
    padding: 15px;
    color: #fff; 
    background-color: rgb(2, 57, 2); 
  }

  ul.menu li ul li a:hover {
    background-color: rgba(2, 57, 2, 0.9);
  }
}


.burger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger.active span:nth-child(2) {
  opacity: 0;
}

.burger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}