.answer-opts {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin: 1rem 0;
  border: 0;
  padding: 0;
  min-width: 0;
}

.answer-btn,
.option-row {
  font-family: var(--mono);
  font-size: var(--text-sm);
  background: var(--panel-bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .6rem 1rem;
  border-radius: .4rem;
  text-align: left;
  cursor: pointer;
  box-shadow: var(--box-shadow-sm);
  transition: all var(--dur-fast);
}

.option-row {
  display: flex;
  align-items: center;
  gap: .5rem;
}

.option-row input[type="checkbox"] {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.answer-btn:hover,
fieldset.answer-opts:not(:disabled) .option-row:hover,
.option-row:has(input:checked) {
  border-color: var(--accent);
  color: var(--accent);
}

.option-row:has(input:focus-visible) {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.answer-btn.correct,
fieldset.answer-opts[data-answered] .answer-btn[data-correct],
fieldset.answer-opts[data-answered] .option-row:has(input[data-correct]) {
  background: var(--correct-bg);
  border-color: var(--correct-border);
  color: var(--correct);
}

.answer-btn.correct::before,
fieldset.answer-opts[data-answered] .answer-btn[data-correct]::before,
fieldset.answer-opts[data-answered] .option-row:has(input[data-correct])::before {
  content: '\2713\a0';
}

.answer-btn.incorrect,
fieldset.answer-opts[data-answered] .answer-btn[data-picked]:not([data-correct]),
fieldset.answer-opts[data-answered] .option-row:has(input:checked:not([data-correct])) {
  background: var(--error-bg);
  border-color: var(--error-border);
  color: var(--error);
}

.answer-btn.incorrect::before,
fieldset.answer-opts[data-answered] .answer-btn[data-picked]:not([data-correct])::before,
fieldset.answer-opts[data-answered]
  .option-row:has(input:checked:not([data-correct]))::before {
  content: '\2717\a0';
}

.answered .answer-btn,
fieldset.answer-opts:disabled .answer-btn,
fieldset.answer-opts:disabled .option-row {
  pointer-events: none;
}

.answer-btn.selected-correct {
  background: var(--correct-bg);
  border-color: var(--correct-border);
  color: var(--correct);
}

.feedback-box {
  border-radius: .4rem;
  padding: 1rem;
  margin-top: 1rem;
  font-size: var(--text-sm);
  border-left: 4px solid var(--accent);
  background: var(--accent-bg);
}

.feedback-box.error {
  border-left-color: var(--error-border);
  background: var(--error-bg);
}

.score-display {
  font-family: var(--mono);
  font-size: var(--text-sm);
  color: var(--accent);
  text-align: right;
  margin-bottom: .75rem;
}