:root {
  color-scheme: dark;
  --canvas: #4d006e;
  --accent: #f6fe00;
  --nav-color: #f6fe00;
  --bar-height: 76px;
  --nav-safe-zone: calc(3.5vh + 60px);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-width: 320px;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--canvas);
}

body {
  color: var(--nav-color);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  transition: background-color 620ms cubic-bezier(0.22, 0.72, 0.18, 1);
}

button {
  font: inherit;
}

.specimen {
  display: grid;
  grid-template-rows: minmax(0, 1fr) var(--bar-height);
  width: 100%;
  height: 100%;
}

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  height: calc(3.5vh + 90px);
  pointer-events: none;
}

.nav-left {
  position: absolute;
  top: 3.5vh;
  left: 3vw;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  pointer-events: none;
}

.nav-icons {
  display: flex;
  align-items: center;
  gap: 20px;
  pointer-events: auto;
}

.nav-label {
  height: 13px;
  margin-top: 9px;
  color: var(--nav-color);
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.32em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 150ms ease;
  pointer-events: none;
}

.navBtn {
  appearance: none;
  padding: 0;
  border: 0;
  background: transparent;
  line-height: 0;
  opacity: 0.5;
  cursor: pointer;
  transition: opacity 200ms ease;
  pointer-events: auto;
}

.navBtn svg {
  display: block;
  width: 54px;
  height: 54px;
  transform: scale(0.8);
  transform-origin: center;
}

.navBtn.logo {
  position: absolute;
  top: 3.5vh;
  left: 0;
  right: 0;
  width: 70px;
  margin: 0 auto;
  opacity: 0.7;
  transform: translateY(calc((54px - 70px) / 2));
}

.navBtn.logo svg {
  width: 70px;
  height: 70px;
}

.nav-fill,
.cell-outer,
.ws-fill,
.contact-fill,
.font-letter {
  fill: var(--nav-color);
}

.cell-inner,
.ws-stroke,
.contact-stroke,
.font-frame {
  fill: none;
  stroke: var(--nav-color);
  stroke-width: 1;
  stroke-miterlimit: 10;
}

.font-letter {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 22px;
  font-weight: 300;
}

.navBtn:hover,
.navBtn.logo:hover {
  opacity: 1;
}

.navBtn:not(.font-active):hover .nav-fill,
.navBtn:not(.font-active):hover .cell-outer,
.navBtn:not(.font-active):hover .ws-fill,
.navBtn:not(.font-active):hover .contact-fill,
.navBtn:not(.font-active):hover .font-letter {
  fill: var(--accent);
}

.navBtn:not(.font-active):hover .cell-inner,
.navBtn:not(.font-active):hover .ws-stroke,
.navBtn:not(.font-active):hover .contact-stroke,
.navBtn:not(.font-active):hover .font-frame {
  stroke: var(--accent);
}

.navBtn.font-active {
  opacity: 1;
  cursor: default;
}

.navBtn.font-active .font-letter {
  fill: var(--accent);
}

.slideshow {
  position: relative;
  display: grid;
  min-height: 0;
  overflow: hidden;
  background: transparent;
  isolation: isolate;
  touch-action: pan-y;
}

.slides {
  position: absolute;
  inset: var(--nav-safe-zone) 0 0;
}

.slide {
  position: absolute;
  inset: 0;
}

.slide {
  display: grid;
  place-items: center;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 620ms cubic-bezier(0.22, 0.72, 0.18, 1),
    visibility 0s linear 620ms;
}

.slide.is-active {
  z-index: 1;
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

.slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.slide-zone {
  position: absolute;
  z-index: 3;
  top: var(--nav-safe-zone);
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  cursor: pointer;
}

.controls {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-width: 0;
  padding: 0 clamp(18px, 3vw, 52px);
  border-top: 0;
  background: transparent;
}

.progress {
  display: flex;
  align-items: center;
  justify-self: start;
  gap: 11px;
}

.progress__dot {
  width: 5px;
  height: 5px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--nav-color);
  opacity: 0.3;
  cursor: pointer;
  transition:
    background-color 180ms ease,
    transform 180ms ease;
}

.progress__dot:hover,
.progress__dot:focus-visible,
.progress__dot.is-active {
  background: var(--nav-color);
  opacity: 1;
  transform: scale(1.35);
}

.download {
  display: inline-grid;
  place-items: center;
  min-width: 224px;
  padding: 11px 22px 10px;
  border: 1px solid currentColor;
  border-radius: 0;
  background: transparent;
  color: var(--nav-color);
  font-size: 10px;
  letter-spacing: 0.17em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    border-color 180ms ease,
    color 180ms ease,
    background-color 180ms ease;
}

.download:hover,
.download:focus-visible {
  border-color: var(--nav-color);
  background: color-mix(in srgb, var(--nav-color) 10%, transparent);
  color: var(--nav-color);
}

.counter {
  justify-self: end;
  margin: 0;
  color: var(--nav-color);
  opacity: 0.45;
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.14em;
}

@media (max-width: 640px) {
  :root {
    --bar-height: 68px;
    --nav-safe-zone: calc(2.5vh + 48px);
  }

  .controls {
    grid-template-columns: auto 1fr auto;
    gap: 14px;
    padding-inline: 16px;
  }

  .download {
    justify-self: center;
    min-width: 0;
    padding-inline: 15px;
    letter-spacing: 0.12em;
  }

  .nav-left {
    top: 2.5vh;
    left: 4vw;
  }

  .nav-icons {
    gap: 8px;
  }

  .navBtn svg {
    width: 34px;
    height: 34px;
  }

  .navBtn.logo {
    top: 2.5vh;
    width: 44px;
    transform: translateY(calc((34px - 44px) / 2));
  }

  .navBtn.logo svg {
    width: 44px;
    height: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .slide,
  .progress__dot {
    transition-duration: 1ms;
  }
}