.header {
  background-color: var(--primary-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
}

.logo img {
  height: 5em;
  width: auto;
}

.hamburger {
  display: flex;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--text-light);
  margin: 3px 0;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

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

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 70%;
  height: 100vh;
  background-color: var(--secondary-color);
  display: flex;
  flex-direction: column;
  padding: 80px 30px 30px;
  transition: var(--transition);
  box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
}

.nav.active {
  right: 0;
}

.nav a {
  color: var(--text-light);
  text-decoration: none;
  padding: 15px 0;
  font-size: 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.nav a:hover {
  color: var(--accent-color);
  padding-left: 10px;
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }

  .nav {
    position: static;
    flex-direction: row;
    width: auto;
    height: auto;
    padding: 0;
    background: none;
    box-shadow: none;
  }

  .nav a {
    padding: 0 20px;
    font-size: 1rem;
    border: none;
  }

  .nav a:hover {
    padding-left: 20px;
  }
}