#lesson-markdown img {
  cursor: zoom-in;
}

body.lesson-image-viewer-open {
  overflow: hidden;
}

.lesson-image-viewer[hidden] {
  display: none;
}

.lesson-image-viewer {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(2, 7, 15, .9);
  backdrop-filter: blur(10px);
}

.lesson-image-viewer > section {
  width: min(1500px, 100%);
  height: min(94vh, 1050px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  border: 1px solid #344b63;
  border-radius: 10px;
  background: #091321;
  box-shadow: 0 28px 90px rgba(0, 0, 0, .55);
}

.lesson-image-viewer header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 11px 14px;
  border-bottom: 1px solid #263b51;
}

.lesson-image-viewer header strong {
  min-width: 0;
  overflow: hidden;
  color: #e9f2fb;
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lesson-image-viewer-controls {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 7px;
}

.lesson-image-viewer button,
.lesson-image-viewer a {
  min-width: 36px;
  min-height: 34px;
  display: inline-grid;
  place-items: center;
  padding: 6px 10px;
  border: 1px solid #3d5873;
  border-radius: 6px;
  color: #cfe7ff;
  background: #101f30;
  font: 800 11px "JetBrains Mono", monospace;
  text-decoration: none;
  cursor: pointer;
}

.lesson-image-viewer button:hover,
.lesson-image-viewer a:hover,
.lesson-image-viewer button:focus-visible,
.lesson-image-viewer a:focus-visible {
  border-color: #9dff43;
  color: #9dff43;
  outline: 0;
}

.lesson-image-viewer [data-image-viewer-close] {
  color: #ff9ca6;
  font-size: 20px;
}

.lesson-image-viewer-viewport {
  min-width: 0;
  min-height: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 18px;
  cursor: default;
  touch-action: none;
}

.lesson-image-viewer-viewport.is-zoomed {
  cursor: grab;
}

.lesson-image-viewer-viewport.is-dragging {
  cursor: grabbing;
}

.lesson-image-viewer-viewport img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transform-origin: center;
  transition: transform .12s ease-out;
  user-select: none;
  -webkit-user-drag: none;
}

.lesson-image-viewer-viewport.is-dragging img {
  transition: none;
}

.lesson-image-viewer > section > small {
  padding: 9px 14px;
  border-top: 1px solid #263b51;
  color: #8fa5ba;
  font: 700 9px "JetBrains Mono", monospace;
  text-align: center;
}

html[data-course-theme=light] .lesson-image-viewer > section {
  border-color: #a9bed1;
  background: #f5f9fd;
}

html[data-course-theme=light] .lesson-image-viewer header strong {
  color: #18344d;
}

html[data-course-theme=light] .lesson-image-viewer button,
html[data-course-theme=light] .lesson-image-viewer a {
  border-color: #a9bed1;
  color: #315f8b;
  background: #fff;
}

@media (max-width: 720px) {
  .lesson-image-viewer {
    padding: 0;
  }

  .lesson-image-viewer > section {
    width: 100%;
    height: 100dvh;
    border: 0;
    border-radius: 0;
  }

  .lesson-image-viewer header {
    align-items: flex-start;
  }

  .lesson-image-viewer header strong,
  .lesson-image-viewer [data-image-open-original],
  .lesson-image-viewer > section > small {
    display: none;
  }

  .lesson-image-viewer-controls {
    width: 100%;
    justify-content: center;
  }

  .lesson-image-viewer [data-image-viewer-close] {
    margin-left: auto;
  }

  .lesson-image-viewer-viewport {
    padding: 8px;
  }
}