.viewer-nav {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  font-size: 18px;
  transition: all 0.2s;
}
.viewer-nav.black .main-nav {
  color: white;
}
/*
.viewer-nav.white span {
  text-shadow: 0 0 2px #fff, 0 0 3px #fff, 0 0 3px #fff;
}
.viewer-nav.black span {
  text-shadow: 0 0 2px #000, 0 0 3px #000, 0 0 3px #000;
}
.viewer-nav.hovering-nav.white span,
.viewer-nav.hovering-nav.black span {
  text-shadow: 0 0 0px;
}
*/
.main-nav {
  transition: all 0.2s;
  transform: translateZ(0) translateY(0);
  border-top: 1px solid transparent;
  cursor: crosshair;
}
.viewer-nav.hovering-nav .main-nav {
  background: black;
  color: white;
}

.nav-open .main-nav {
  transform: translateZ(0) translateY(-22rem);
  border-top: 1px solid #fff;
  background: black;
  color: white;
}
.transcript-open .viewer-nav {
  width: calc(100vw - 31.875rem);
}
.checklist-open .main-nav {
  transition: all 0.4s !important;
  transform: translateZ(0) translateY(calc(-22rem - 100vh));
}

/* The main nav row */

.viewer-nav > .nav-row {
  width: 100%;
  height: 3rem;
  padding: 0.25rem 0 0.25rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.viewer-nav > .nav-row > div {
  display: flex;
  justify-content: center;
  align-items: center;
}
.viewer-nav > .main-nav > div {
  width: 32%;
}
.viewer-nav > .nav-row > div:nth-child(1) {
  justify-content: flex-start;
  align-items: center;
}
.viewer-nav > .nav-row > div:nth-child(2),
.viewer-nav > .nav-row > div:nth-child(2) > div {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}
.viewer-nav > .nav-row > div:nth-child(3) {
  justify-content: flex-end;
  align-items: center;
}

.viewer-nav .link {
  display: flex;
  flex-direction: row;
  justify-content: center;
  max-width: 100%;
  white-space: nowrap;
  align-items: center;  
  cursor: pointer;
}
.viewer-nav .link > span {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;  
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.viewer-nav .link.section-link {
  cursor: pointer;
}
.viewer-nav .link.section-link > span {
  align-items: flex-start;
  justify-content: flex-start;
  max-width: 90%;
  white-space: pre;
  display: block;
  pointer-events: none;
}
.viewer-nav .link.section-link .arrow {
  cursor: pointer;
}

.next-link {
  padding: 0.25rem 0.25rem 0.25rem 0.25rem;
  user-select: none;
}
.transcript-link {
  padding-right: 1.25rem;
}

.viewer-nav .link > span.replay-link {
  display: inline-block;
  max-width: 30vw;
  overflow: hidden;
  text-overflow: ellipsis;
}

.viewer-nav .next-section-thumbnail {
  position: absolute;
  right: 0;
  bottom: -9rem;
  display: block;
  border-radius: 1rem;
  width: 12rem;
  height: 8rem;
  z-index: 2;
  margin-top: 3rem;
  margin-bottom: 0.5rem;
  margin-right: 0.75rem;
  background-size: cover;
  background-position: center center;
  transition: transform 0.2s;
  transform: translateZ(0);
  cursor: pointer;
}
.viewer-nav .nav-next {
  transition: transform 0.2s;
  transform: translateZ(0);
}
.viewer-nav.hovering-next .nav-next {
  transform: translateZ(0) translateY(-8.5rem);
}
.viewer-nav.hovering-next .next-section-thumbnail {
  transform: translateZ(0) translateY(-9rem);
}

/* Inverse progress bar */

.nav-progress-percentage {
  position: absolute;
  left: 0;
  height: 4px;
  bottom: calc(3rem - 4px);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  background: #fff;
}
.nav-open .nav-progress-percentage,
.viewer-nav.hovering-nav .nav-progress-percentage {
  opacity: 1;
}

.chrome .nav-progress-percentage {
  bottom: 0;
  height: 3rem;
  backdrop-filter: invert(0%);
  transition: opacity 0.2s, backdrop-filter 0.2s, width 0.25s linear;
}
.chrome .nav-open .nav-progress-percentage {
  height: calc(3rem - 1px);
}
.chrome .nav-open .nav-progress-percentage,
.chrome .viewer-nav.hovering-nav .nav-progress-percentage {
  backdrop-filter: invert(100%);
}


/* Arrows */

.arrow svg {
  width: 100%;
  height: 100%;
}

.viewer-nav .arrow {
  display: inline-block;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
}
.viewer-nav .arrow.left,
.viewer-nav .arrow.right {
  width: 1.5rem;
}
.viewer-nav .arrow svg {
  width: 100%;
  height: 100%;
}
.viewer-nav .arrow path,
.viewer-nav .arrow polygon {
  fill: #000;
}
.viewer-nav.black .arrow path,
.viewer-nav.black .arrow polygon,
.viewer-nav.black .playToggle .arrow path,
.viewer-nav.black .playToggle .arrow polygon,
.viewer-nav.hovering-nav .main-nav .arrow path,
.viewer-nav.hovering-nav .main-nav .arrow polygon,
.nav-open .viewer-nav .arrow path,
.nav-open .viewer-nav .arrow polygon,
.checklist-open .viewer-nav .arrow path,
.checklist-open .viewer-nav .arrow polygon {
  fill: #fff;
}

/* Player */

.nav-player {
  transition: opacity 0.2s;
  opacity: 1.0;
}
.nav-player.playing {
  opacity: 0.0;
}
.viewer-nav.hovering-nav .nav-player.playing,
.nav-open .nav-player.playing {
  opacity: 1.0;
}

/* Volume button */

.volume {
  cursor: pointer;
  width: 2.5rem;
  height: 2.5rem;
}
.volume path {
  fill: #000;
}
.volume.muted {
  opacity: 0.4;
}
.viewer-nav.hovering-nav .volume path,
.viewer-nav.black .volume path,
.nav-open .volume path {
  fill: #fff;
}

/* Play button */

.playToggle {
  cursor: pointer;
  width: 2.5rem;
  height: 2.5rem;
}
.playToggle path,
.playToggle polygon {
  fill: #000;
}
.viewer-nav.hovering-nav .playToggle path,
.viewer-nav.hovering-nav .playToggle polygon,
.viewer-nav.black .playToggle path,
.viewer-nav.black .playToggle polygon,
.nav-open .playToggle path,
.nav-open .playToggle polygon {
  fill: #fff;
}

/* Player time */

.playerTime {
  margin-left: 0.5rem;
  margin-right: 0.75rem;
  cursor: default;
}
@media only screen and (max-width: 950px) {
  .playerDuration {
    display: none;
  }
}
@media only screen and (max-width: 1200px) {
  .transcript-open .playerDuration {
    display: none;
  }
}

/* Zoom Plus */

.zoomPlus {
  width: 2.5rem;
  height: 2.5rem;
}
.zoomPlus path {
  stroke: white;
}

/* CC button */

.cc-button {
  transition: opacity 0.2s, background 0.2s;
  background: rgba(0,0,0,0.0);
  font-size: 0.95rem;
  padding: 0.25rem;
  margin-left: 0.5rem;
  margin-right: 0.75rem;
  cursor: pointer;
}
.cc-button.off {
  opacity: 0.4;
}