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

/* consistent whitespace */
ul,
ol,
figure,
pre {
  margin: 2em 0;
}

html {
  min-height: 100%;
  overflow-x: hidden;
  --max-width: 1400px;
}

html,
body {
  display: flex;
}

html,
body,
body > main {
  width: 100%;
}

body,
body > main {
  flex: 1;
}

.hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  z-index: 1;
}

/* page layout */
body {
  margin: 0 auto;
  flex-direction: column;
  font-size: 14px;
  --border-radius: 8px;
  --padding-section: 2em 1em;
  --active-background-color: var(--dark-30);
  --active-background: initial;

  > main {
    > article {
      background: var(--active-background);
      background-color: var(--active-background-color);
      z-index: 2;
      position: relative;
      transition: background 0.6s ease, background-color 0.6s ease,
        background-blend-mode 0.6s ease;
    }
  }

  > header {
    position: sticky;
    top: 0;
    z-index: 3;

    &.is-fixed {
      background: rgba(255, 255, 255, 0.9);
      transform: translate3d(0, -100%, 0);
    }

    &.can-animate {
      transition: transform 0.3s ease, visibility 0s 0.3s linear;
    }

    &.scroll-up {
      transform: translate3d(0, 0, 0);
    }

    .logo {
      color: white;
    }

    /* @media (max-width: 800px) { */

    /* } */
  }

  section {
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin-left: auto;
    margin-right: auto;
    z-index: 1;
    position: relative;
    overflow: hidden;

    /* @media (min-width: 1001px) { */
    min-height: 100vh;
    /* } */

    &:not(.fluid) {
      padding: var(--padding-section);

      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
    }

    &.fluid {
      padding: var(--padding-section);
    }

    > header {
      font-family: "Azeret Mono", monospace;
      font-optical-sizing: auto;
      font-style: normal;
      font-weight: 400;
      font-size: 0.85em;
      line-height: 1.2em;

      p {
        margin: 0;
      }

      span {
        color: var(--subheader-color, var(--grey-70));
      }
    }

    &.fluid {
      > header,
      > main,
      > footer {
        padding: var(--padding-section);
        max-width: var(--max-width);
        margin-right: auto;
        margin-left: auto;
        width: 100%;
      }

      > main {
        display: flex;
      }
    }
  }

  .navigation-end-desktop {
    display: none;
    @media (min-width: 801px) {
      display: flex;
      justify-content: space-between;
      width: 100%;
    }
  }
  .navigation-end {
    > div:not(.navigation-end-desktop) {
      display: none;

      @media (max-width: 800px) {
        display: flex;
        justify-content: space-between;
        width: 100%;
      }
    }
  }
}