new-codex.storage/@library/menu.css

.menu {
  display: flex;
  align-items: center;
  z-index: 1;
  position: relative;
  background-color: var(--dark-0);
  top: 0;
  position: sticky;

  > div:first-child {
    background-color: var(--dark-40);
    padding: 1.5em 3em;
    z-index: 1;

    @media (min-width: 801px) {
      padding: 1.5em 3em;
    }

    @media (max-width: 800px) {
      padding: 0.15em 1.5em;
      cursor: pointer;

      svg {
        width: 28px;
      }
    }
  }

  > div + div {
    @media (min-width: 801px) {
      display: flex;
      justify-content: flex-end;
      flex: 1;
      align-items: center;
      padding: 0 3em;
      gap: 3em;
    }

    @media (max-width: 800px) {
      position: fixed;
      top: 60px;
      width: 100%;
      background-color: var(--dark-60);
      opacity: 0;
      transform: translateY(-500px);
      transition: opacity 0.5s, transform 0.5s;
      z-index: -1;

      main {
        padding: 1em;
      }
    }
  }

  &[aria-expanded] {
    > div + div {
      @media (max-width: 800px) {
        z-index: 0;
        opacity: 1;
        transform: translateY(0px);
      }
    }
  }

  main {
    display: flex;
    gap: 3em;

    @media (min-width: 801px) {
      align-items: center;
    }

    @media (max-width: 800px) {
      flex-direction: column;
    }

    nav {
      display: flex;

      .intro {
        @media (min-width: 801px) {
          display: none;
        }

        @media (max-width: 800px) {
          font-family: Azeret Mono;
          font-weight: 400;
          font-size: 0.75em;
          text-transform: uppercase;
          color: var(--green-20);
          display: flex;
          flex-direction: column;
        }
      }

      @media (min-width: 801px) {
        align-items: center;
        gap: 3em;
        height: 100%;
      }

      @media (max-width: 800px) {
        flex-direction: column;
        width: 100%;
        align-items: flex-start;
        gap: 1em;
        text-transform: uppercase;
        color: var(--light-20);
      }

      a {
        color: var(--light-40);
        font-size: 1.05em;
        display: flex;
        flex-direction: column;
        width: 100%;

        @media (max-width: 800px) {
          border-top: 1px solid var(--grey-140);
          padding-top: 1em;
          font-weight: 600;
        }

        span {
          @media (min-width: 801px) {
            display: none;
          }

          @media (max-width: 800px) {
            color: var(--grey-23);
            font-size: 0.85em;
            font-family: Azeret Mono;
            font-weight: 400;
            margin-top: 0.25em;
          }
        }
      }
    }

    > p {
      margin: 0;

      @media (min-width: 801px) {
        display: none;
      }

      @media (max-width: 800px) {
        font-weight: 300;
        font-size: 2em;
        color: var(--grey-22);
        max-width: 300px;
        position: relative;

        &::after {
          content: " ";
          position: absolute;
          width: 27px;
          height: 2px;
          background-color: var(--green-10);
          left: 0;
          top: 80px;
        }
      }
    }
  }

  .social {
    display: flex;
    align-items: center;
    gap: 1em;

    a {
      @media (min-width: 801px) {
        height: 40px;
        width: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: var(--dark-40);
        border-radius: 50%;
        border: 1px solid var(--grey-45);
      }

      @media (max-width: 800px) {
        display: flex;
        align-items: center;
        gap: 0.5em;
        position: relative;
        top: 1px;
        font-weight: 500;
        font-size: 1em;
      }
    }

    label {
      @media (min-width: 801px) {
        display: none;
      }

      @media (max-width: 800px) {
      }
    }
  }

  .icon + .icon {
    @media (min-width: 801px) {
      display: none;
    }

    @media (max-width: 800px) {
      position: absolute;
      top: 0;
      bottom: 0;
      right: 1em;
      margin: auto;
      cursor: pointer;
      color: var(--grey-40);
      transition: color 0.5s, opacity 0.5s;
      opacity: 0;

      &:hover {
        color: white;
      }
    }
  }

  &[aria-expanded] {
    .icon + .icon {
      @media (max-width: 800px) {
        opacity: 1;
      }
    }
  }

  footer {
    @media (min-width: 801px) {
      display: none;
    }

    @media (max-width: 800px) {
      margin-top: 0.5em;
      border-top: 1px solid var(--light-50);
      color: var(--light-40);
      padding: 1em;
      display: flex;
      justify-content: space-between;

      span + span {
        font-size: 1.25em;
      }
    }
  }
}