.no-select {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

*,
*:before,
*:after {
  box-sizing: border-box;
}

.tagline,
button,
a,
h1, h2, h3, h4, h5, h6 {
  user-select: none;
}

html, body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  width: auto;
  margin: 0;
  padding: 0;  
  font-size: 62.5%;
  background-color: #121212;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: auto;
  height: 10dvh;
  position: relative;
}

#logo-link {
  text-decoration: none;
}

#logo {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100px;
  height: 48px;
  margin-left: 10px;
}

#logo img {
  flex: 1;
  display: block;
  width: 100%;
  height: auto;
}

#hamburger-menu {
  background: transparent;
  border: none;
  cursor: pointer;
  margin-right: 10px;
  width: 48px;
  height: 48px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#hamburger-menu svg {
  fill: #2196f3;
  margin: 0;
  padding: 0;
  display: block;
  height: 28px;
  width: 28px;
}

#nav-links {
  border-top: 1px solid #333333;
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 0;
  left: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  transition: opacity 0.3s ease, transform 0.3s ease;
  min-height: 90dvh;
  background-color: #121212;
  z-index: 1000;
}

#nav-links.active {
  visibility: visible;
  opacity: 1;
}

#nav-links li {
  transform: translateY(-20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

#nav-links.active li {
  opacity: 1;
  transform: translateY(0);
}

#nav-links.active li:nth-child(1) { transition-delay: 0.1s; }
#nav-links.active li:nth-child(2) { transition-delay: 0.2s; }
#nav-links.active li:nth-child(3) { transition-delay: 0.3s; }
#nav-links.active li:nth-child(4) { transition-delay: 0.4s; }
 
#nav-links a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  font-size: 2.5rem;
  color: #ffffff;
  letter-spacing: 1px;
  width: 100%;
  height: 10dvh;
  border-bottom: 1px solid #333333;
}

#nav-links a:focus {
  background: #2196f3;
}


@media (min-width: 540px) {
  .site-header {
    margin: 0 0;
  }

  #hamburger-menu {
    display: none;
  }

  #nav-links {
    visibility: visible;
    opacity: 1;
    position: static;
    min-height: auto;
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    background-color: transparent;
    border-top: none;
  }

  #nav-links li {
    transform: none;
    transition: none;
    opacity: 1;
    margin-left: 2rem;
  }

  #nav-links a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    font-size: 1.8rem;
    color: #ffffff;
    letter-spacing: 0.5px;
    padding: 1rem 1.5rem;
    border-bottom: none;
    width: auto;
    height: auto;
  }

  #nav-links a:focus {
    background: none;
  }

  #nav-links a:hover {
    color: #2196f3;
  }

}

@media (min-width: 768px) {
  .site-header {
    margin: 0 14%;
  }
  
}

@media (min-width: 1024px) {
}