.presentation-progress {
  display: none;
}

.presentation-overflow-hidden {
  overflow: hidden;
  visibility: hidden;

  .presentation-hidden {
    display: none;
  }

  h1,
  h2,
  h3,
  h4 {
    font-size: xx-large;
  }

  site-presentation-slide[large] {
    font-size: x-large;
  }

  .presentation-progress {
    transition: width 1000ms;
    display: block;
    visibility: visible;
    position: absolute;
    z-index: 20;
    top: 0px;
    left: 0px;
    width: var(--presentation-progress);
    height: 0.25rem;
    background: var(--color-brand-muted);
  }

  site-presentation-slide {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;

    visibility: visible;

    transition: transform 300ms ease-in-out;

    display: flex;
    flex-direction: column;

    background-color: var(--color-base);
    color: var(--color-on-base);

    box-sizing: border-box;
    min-height: 100vh;
    width: 100%;
    padding: 2rem 4rem;

    z-index: 10;
    overflow: auto;

    &[centered] {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

    &[highlight] {
      background-color: var(--color-brand);
      color: var(--color-on-brand);
    }

    .presentation-slide-only {
      display: block;
    }

    .astro-code {
      filter: none;
    }

    img {
      max-height: 80vh;
    }
  }

  &.presentation-presenter {
    site-presentation-slide {
      border: none;
      border-bottom: solid 8px var(--color-brand);
    }

    .presentation-note {
      position: absolute;
      bottom: 24px;
      opacity: 0.8;
      right: 24px;
      left: 25%;
      z-index: 999;
    }
  }
}

.presentation-slide-only {
  display: none;
}

.presentation-next {
  transform: translateX(100%);
}

.presentation-current {
  transform: translateX(0%);
}

.presentation-prev {
  transform: translateX(-100%);
}

.presentation-note {
  display: none;
}

.presentation-presenter {
  .presentation-slide {
    border: dotted 8px var(--color-brand);
  }

  /* ensure that notes are visible if presentation mode is active, even if
   not presenting */
  .presentation-note {
    display: block;
    /* intentionally obnoxios color to draw attention */
    background-color: crimson;
    padding: 24px;
    color: white;
    font-size: xx-large;
  }
}