.clinical-viewer {
  min-width: 0;
  margin: 1.25rem 0 1.5rem;
  overflow: hidden;
  border: 1px solid #d9e2ec;
  border-radius: 14px;
  background: #f8fafc;
  box-shadow: 0 10px 30px rgba(25, 50, 75, 0.07);
}

.clinical-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
  gap: 0.45rem;
  padding: 0.65rem;
  border-bottom: 1px solid #d9e2ec;
  background: #edf3f8;
}

.clinical-tab,
.clinical-prev,
.clinical-next,
.clinical-choice {
  min-height: 44px;
  border: 1px solid #cbd7e3;
  border-radius: 9px;
  background: #fff;
  color: #243b53;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.25;
  cursor: pointer;
}

.clinical-tab {
  width: 100%;
  padding: 0.55rem 0.7rem;
}

.clinical-tab:hover,
.clinical-choice:hover,
.clinical-prev:hover,
.clinical-next:hover {
  border-color: #6fa6d3;
  background: #edf6fd;
}

.clinical-tab.is-active {
  border-color: #0b6ab8;
  background: #0b6ab8;
  color: #fff;
}

.clinical-stage {
  min-width: 0;
  padding: 0.85rem;
  background: #fff;
}

.clinical-prompt {
  margin: 0 0 0.75rem;
  color: #102a43;
  font-size: 0.95rem;
  font-weight: 750;
  line-height: 1.5;
}

.clinical-scroll {
  max-width: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

.clinical-hitboard {
  position: relative;
  width: 100%;
  min-width: 660px;
  margin: 0 auto;
  overflow: hidden;
  border: 2px solid #b8c7d6;
  border-radius: 9px;
  background: #eaffea;
  cursor: crosshair;
  line-height: 0;
  touch-action: manipulation;
}

.clinical-hitboard.is-static { cursor: default; }

.clinical-hitboard img {
  display: block;
  width: 100%;
  height: auto;
  user-select: none;
  -webkit-user-drag: none;
}

.clinical-marker {
  position: absolute;
  z-index: 3;
  width: 18px;
  height: 18px;
  border: 3px solid #b42318;
  border-radius: 50%;
  background: rgba(180, 35, 24, 0.18);
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.6);
  transition: opacity 120ms ease, transform 120ms ease;
  pointer-events: none;
}

.clinical-marker.is-visible {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.clinical-marker.is-correct {
  border-color: #137a44;
  background: rgba(19, 122, 68, 0.2);
}

.clinical-highlight {
  position: absolute;
  z-index: 2;
  border: 3px solid #137a44;
  background: rgba(19, 122, 68, 0.14);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.8);
  opacity: 0;
  transition: opacity 160ms ease;
  pointer-events: none;
}

.clinical-highlight.is-visible { opacity: 1; }

.clinical-a11y-choices {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(165px, 1fr));
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.clinical-choice {
  width: 100%;
  padding: 0.55rem 0.65rem;
}

.clinical-choice.is-correct {
  border-color: #137a44;
  background: #e9f8ef;
  color: #0d6135;
}

.clinical-choice.is-wrong {
  border-color: #b42318;
  background: #fff1f0;
  color: #8f1d16;
}

.clinical-feedback {
  min-height: 2.6em;
  margin: 0.75rem 0 0;
  padding: 0.65rem 0.75rem;
  border-left: 4px solid #8ba4bb;
  border-radius: 5px;
  background: #f1f5f9;
  color: #40566c;
  font-size: 0.86rem;
  line-height: 1.5;
}

.clinical-viewer.is-solved .clinical-feedback {
  border-left-color: #137a44;
  background: #edf9f2;
  color: #0d6135;
}

.clinical-viewer.is-wrong .clinical-feedback {
  border-left-color: #b42318;
  background: #fff3f2;
  color: #8f1d16;
}

.clinical-reading {
  margin: 0;
  padding: 0 1rem;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 220ms ease, opacity 160ms ease, padding 220ms ease;
}

.clinical-reading.is-revealed {
  max-height: 22rem;
  padding: 0.95rem 1rem 0.35rem;
  opacity: 1;
}

.clinical-reading h3 {
  margin: 0 0 0.4rem;
  color: #0b6ab8;
  font-size: 1.02rem;
}

.clinical-reading p {
  margin: 0 0 0.5rem;
  color: #334e68;
  font-size: 0.9rem;
  line-height: 1.65;
}

.clinical-nav {
  display: grid;
  grid-template-columns: minmax(110px, auto) 1fr minmax(110px, auto);
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 0.85rem 0.85rem;
  color: #627d98;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 700;
}

.clinical-prev,
.clinical-next {
  padding: 0.5rem 0.75rem;
}

.clinical-checklist { margin-top: 1.15rem; }

.clinical-tab:focus-visible,
.clinical-prev:focus-visible,
.clinical-next:focus-visible,
.clinical-choice:focus-visible,
.clinical-hitboard:focus-visible {
  outline: 3px solid #0b6ab8;
  outline-offset: 2px;
}

body.dark .clinical-viewer {
  border-color: #3a4856;
  background: #1f272f;
}

body.dark .clinical-tabs {
  border-bottom-color: #3a4856;
  background: #222d37;
}

body.dark .clinical-stage { background: #202a33; }
body.dark .clinical-prompt { color: #eef5fb; }
body.dark .clinical-tab,
body.dark .clinical-prev,
body.dark .clinical-next,
body.dark .clinical-choice {
  border-color: #506171;
  background: #2a3641;
  color: #ecf3f8;
}

body.dark .clinical-tab.is-active { background: #1680d0; }
body.dark .clinical-reading h3 { color: #71b9ee; }
body.dark .clinical-reading p { color: #d4e0e9; }
body.dark .clinical-feedback { background: #293641; color: #d4e0e9; }

@media (max-width: 768px) {
  .clinical-stage {
    display: flex;
    flex-direction: column;
  }
  .clinical-prompt { order: 0; }
  .clinical-a11y-choices { order: 1; }
  .clinical-scroll { order: 2; }
  .clinical-feedback { order: 3; }
}

@media (max-width: 720px) {
  .clinical-tabs { grid-template-columns: 1fr 1fr; }
  .clinical-hitboard { min-width: 620px; }
  .clinical-a11y-choices { grid-template-columns: 1fr 1fr; }
  .clinical-nav { grid-template-columns: 1fr 1fr; }
  .clinical-nav > span { display: none; }
}

@media (max-width: 430px) {
  .clinical-tabs,
  .clinical-a11y-choices { grid-template-columns: 1fr; }
  .clinical-stage { padding: 0.7rem; }
}

@media (prefers-reduced-motion: reduce) {
  .clinical-marker,
  .clinical-highlight,
  .clinical-reading { transition: none; }
}