.playerIconButton {
  position: relative;
  display: inline-grid !important;
  place-items: center;
  flex: 0 0 46px;
  width: 46px !important;
  min-width: 46px !important;
  height: 46px !important;
  padding: 0 !important;
  border: 1px solid #010205 !important;
  border-radius: 6px !important;
  background: #010205 !important;
  color: #fff !important;
  overflow: visible;
  transition: transform .18s ease, background-color .22s ease,
              border-color .22s ease, box-shadow .22s ease !important;
}
.playerIconButton svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}
.playerIconButton:hover,
.playerIconButton:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(1,2,5,.2);
  outline: none;
}
.playerIconButton.active {
  background: #d5001c !important;
  border-color: #d5001c !important;
}
.playerIconButton::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  z-index: 100;
  transform: translate(-50%, 6px);
  width: max-content;
  max-width: 180px;
  padding: 7px 10px;
  border-radius: 5px;
  background: #010205;
  color: #fff;
  font-size: 12px;
  font-weight: 400;
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.playerIconButton::before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: calc(100% + 5px);
  z-index: 101;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: #010205;
  opacity: 0;
  visibility: hidden;
  transition: opacity .18s ease, visibility .18s ease;
}
.playerIconButton:hover::after,
.playerIconButton:focus-visible::after {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
.playerIconButton:hover::before,
.playerIconButton:focus-visible::before {
  opacity: 1;
  visibility: visible;
}
.lesson {
  transition: grid-template-columns .46s cubic-bezier(.22,.61,.36,1),
              gap .46s cubic-bezier(.22,.61,.36,1) !important;
}
.lesson .player,
.lesson .lessonSide {
  transition: width .46s cubic-bezier(.22,.61,.36,1),
              max-width .46s cubic-bezier(.22,.61,.36,1),
              opacity .32s ease,
              transform .46s cubic-bezier(.22,.61,.36,1),
              padding .46s cubic-bezier(.22,.61,.36,1) !important;
}
.lesson.theatreMode { grid-template-columns: minmax(0,1fr) 0fr !important; gap: 0 !important; }
.lesson.theatreMode .lessonSide {
  width: 0 !important;
  min-width: 0 !important;
  max-width: 0 !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
  border-width: 0 !important;
  opacity: 0;
  overflow: hidden;
  transform: translateX(24px);
  pointer-events: none;
}
.frame:fullscreen {
  width: 100vw !important;
  height: 100vh !important;
  aspect-ratio: auto !important;
  border-radius: 0 !important;
  background: #000;
}
.frame:fullscreen iframe,
.frame:fullscreen > div:first-child { width: 100% !important; height: 100% !important; }
.controls .saveProgressButton,
.controls > button:last-child { margin-left: auto !important; }
@media(max-width:760px){.playerIconButton{flex-basis:44px;width:44px!important;min-width:44px!important;height:44px!important}.controls .saveProgressButton,.controls>button:last-child{width:100%;margin-left:0!important}}
@media(prefers-reduced-motion:reduce){.lesson,.lesson .player,.lesson .lessonSide{transition-duration:.01ms!important}}