nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100px;
  padding: 0 calc(calc(100% - 1080px) / 2);
  margin: 30px 0;
}
@media (max-width: 1180px) {
  nav {
    padding: 0 50px;
  }
}

nav .links {
  display: flex;
  align-items: center;
}
nav .links > a {
  margin: 0 5px;
  padding: 5px 16px;
  color: inherit;
  text-decoration: none;
  font-size: 1.2rem;
  font-family: var(--pokpok-font-semilight);
  position: relative;
}
nav .links > a .active {
  width: calc(100% - 16px);
  position: absolute;
  bottom: 0;
  left: 8px;
}

nav .menu_button {
  border: 0;
  border-radius: 100px;
  height: 60px;
  width: 60px;
  position: fixed;
  z-index: 10000;
  top: 30px;
  left: 30px;
  background: var(--pokpok-color-white);
  display: none;
  cursor: pointer;
}
nav .menu_button div {
  position: absolute;
  left: 25%;
  right: 25%;
  height: 3px;
}
nav .menu_button div.blue {
  background: var(--pokpok-color-blue);
  top: calc(50% - 13px);
}
nav .menu_button div.yellow {
  background: var(--pokpok-color-yellow);
  top: calc(50% - 2px);
}
nav .menu_button div.red {
  background: var(--pokpok-color-red);
  top: calc(50% + 9px);
}
nav .menu_button.scroll {
  box-shadow: 0 3px 10px 0 rgba(0,0,0,.2);
}

nav .main_logo {
  align-self: center;
}
nav .main_logo img {
  height: 60px;
}

nav.center {
  justify-content: center;
  grid-template-columns: auto;
}

#main_logo {
  display: inline-block;
  margin-bottom: 40px;
}
#main_logo img {
  height: 60px;
}

@media (max-width: 900px) {
  nav {
    justify-content: center;
  }
  nav.minimal {
    margin: 40px 0 20px;
    justify-content: center;
    grid-template-columns: auto;
  }

  nav .menu_button {
    display: block;
    transition: box-shadow .2s;
  }
  nav.open .menu_button.scroll {
    box-shadow: none;
  }
  nav .links {
    flex-direction: column;
    align-items: flex-start;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--pokpok-color-white);
    z-index: 9000;
    padding: 100px 22px 30px;
    box-shadow: 0 2px 100px 0 rgba(0,0,0,.4);
    pointer-events: none;
    -webkit-clip-path: circle(30px at 60px 60px);
    clip-path: circle(30px at 60px 60px);
    visibility: hidden;
    transition: clip-path .2s, visibility .01s linear .2s;
  }
  nav.open .links {
    pointer-events: all;
    -webkit-clip-path: circle(100% at 50vw 50vh);
    clip-path: circle(100% at 50vw 50vh);
    visibility: visible;
    transition: clip-path .3s;
  }
  nav .links > a {
    margin: 5px 5px;
    display: block;
    font-size: 1.4rem;
  }
}
@media (max-width: 700px) {
  nav {
    height: 50px;
    margin: 40px 0 20px;
  }
  nav .main_logo img {
    height: 40px;
  }

  nav.minimal {
    margin: 50px 0 20px;
  }

  #main_logo {
    margin-bottom: 10px;
  }
  #main_logo img {
    height: 40px;
  }
}