/* Reading-first exam mode. macOS resolves system-ui to San Francisco.
   Scope all changes to an active quiz; the University overviews keep Core type. */
#page-root[data-exam-view='quiz'] {
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-family: var(--font-body);
  padding-top: 16px;
  padding-bottom: 96px;
  min-height: 0;
}
body:has(#page-root[data-exam-view='quiz']) .astra-footer { display: none; }
#page-root[data-university] .quiz-workspace.uni-quiz-surface {
  max-width: none;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}
#page-root[data-university] .quiz-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 44px;
  margin-bottom: 10px;
}
#page-root[data-university] .quiz-toolbar h1 { font: 600 1.125rem/1.3 var(--font-body); text-transform: none; letter-spacing: 0; margin: 0; white-space: nowrap; }
#page-root[data-university] .quiz-workspace .btn { min-height: 44px; padding: 8px 14px; font: 600 .9375rem/1.4 var(--font-body); text-transform: none; letter-spacing: 0; }
#page-root[data-university] .quiz-exit { padding-inline: 0 12px; border: 0; border-right: 1px solid var(--border); border-radius: 0; color: var(--text-dim); }
.quiz-mode { color: var(--text-dim); font-size: .8125rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; flex: 1; }
.quiz-count { margin-left: auto; font-size: .875rem; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
#page-root[data-university] .quiz-live-stats { display: flex; gap: 12px; font: 600 .8125rem/1.4 var(--font-body); font-variant-numeric: tabular-nums; white-space: nowrap; }
.quiz-right { color: var(--fc-correct); }
.quiz-wrong { color: var(--fc-incorrect); }
#page-root[data-university] .quiz-progress { height: 4px; margin-bottom: 16px; }
.quiz-columns { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.quiz-question-panel, .quiz-feedback-panel { min-width: 0; border: 1px solid var(--border); border-radius: 10px; background: var(--panel); padding: 20px 24px; }
.quiz-question-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font: 500 .8125rem/1.4 var(--font-body); color: var(--text-dim); }
#page-root[data-university] .quiz-workspace .q-text { font: 600 1.125rem/1.5 var(--font-body); letter-spacing: 0; text-transform: none; margin: 12px 0 18px; color: var(--text); }
#page-root[data-university] .quiz-workspace .q-text:focus { outline: none; }
#page-root[data-university] .quiz-workspace .options { gap: 8px; margin-bottom: 0; }
#page-root[data-university] .quiz-workspace .option {
  font: 400 1.0625rem/1.45 var(--font-body);
  letter-spacing: 0;
  min-height: 46px;
  padding: 10px 12px;
  border-radius: 7px;
  gap: 10px;
  color: var(--text);
}
#page-root[data-university] .quiz-workspace .option .opt-letter { display: block; border: 0; border-radius: 0; width: 22px; min-height: 0; font: 600 .875rem/1.75 var(--font-body); color: var(--text-dim); }
#page-root[data-university] .quiz-workspace .option.correct .opt-letter { color: var(--fc-correct); }
#page-root[data-university] .quiz-workspace .option.incorrect .opt-letter { color: var(--fc-incorrect); }
.quiz-feedback-panel { background: var(--bg-2); max-height: calc(100dvh - 280px); overflow-y: auto; overscroll-behavior-y: contain; scrollbar-gutter: stable; }
.quiz-feedback-empty { padding-block: 4px; color: var(--text-dim); }
.quiz-feedback-empty > svg { color: var(--accent); }
#page-root[data-university] .quiz-feedback-empty h2 { font: 600 1rem/1.4 var(--font-body); text-transform: none; margin: 10px 0 6px; }
.quiz-feedback-empty p { margin: 0; font-size: .9375rem; line-height: 1.5; }
#page-root[data-university] .quiz-workspace .feedback-box { border: 0; padding: 0; margin: 0; border-radius: 0; background: transparent; color: var(--text); font: 400 1.0625rem/1.5 var(--font-body); }
#page-root[data-university] .quiz-workspace .feedback-title { display: inline-flex; align-items: center; font: 600 .875rem/1.4 var(--font-body); padding: 4px 9px; border-radius: 5px; margin-bottom: 12px; }
#page-root[data-university] .quiz-workspace .feedback-box.correct .feedback-title { background: var(--fc-correct-soft); color: var(--fc-correct); }
#page-root[data-university] .quiz-workspace .feedback-box.incorrect .feedback-title { background: var(--fc-incorrect-soft); color: var(--fc-incorrect); }
.quiz-correction { padding-bottom: 12px; font-size: .9375rem; font-weight: 500; }
#page-root[data-university] .quiz-workspace :is(.explain-text, .explain-detail, .why-wrong-row, .ww-row, .ww-why, .ai-msg .bubble) { font: 400 1.0625rem/1.5 var(--font-body); color: var(--text); letter-spacing: 0; }
#page-root[data-university] .quiz-workspace .explain-text { margin: 0; }
#page-root[data-university] .quiz-workspace :is(.why-wrong-label, .why-wrong-title) { display: block; font: 600 .875rem/1.45 var(--font-body); text-transform: none; letter-spacing: 0; color: var(--text); margin: 16px 0 8px; }
#page-root[data-university] .quiz-workspace :is(.why-wrong-row, .ww-row) { display: block; margin-top: 10px; }
#page-root[data-university] .quiz-workspace :is(.why-wrong-letter, .ww-row b) { font: 600 .875rem/1.5 var(--font-body); color: var(--text-dim); margin-right: 7px; }
#page-root[data-university] .quiz-workspace .why-wrong { border: 0; padding: 0; margin: 0; }
.quiz-language { display: flex; gap: 4px; margin-bottom: 12px; }
.quiz-language button { min-height: 36px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px; color: var(--text-dim); background: var(--panel); font: 500 .875rem/1.4 var(--font-body); cursor: pointer; }
.quiz-language button[aria-pressed='true'] { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }
.quiz-explanation-pane[hidden] { display: none !important; }
.quiz-explanation-pane > p { margin: 0 0 10px; }
#page-root[data-university] .quiz-workspace .ai-chat-section { margin: 20px 0 0; border-radius: 7px; }
#page-root[data-university] .quiz-workspace .ai-chat-header { padding: 10px 12px; font: 600 .875rem/1.4 var(--font-body); min-height: 44px; }
#page-root[data-university] .quiz-workspace .ai-chat-body { padding: 12px; }
#page-root[data-university] .quiz-workspace .ai-chat-input { font-family: var(--font-body); }
#page-root[data-university] .quiz-workspace .multi-answer-row { padding: 12px 0 0; margin: 0; border: 0; background: transparent; font-size: .875rem; }
.quiz-navigation { position: fixed; z-index: 65; inset: auto 0 0; padding: 12px 32px; border-top: 1px solid var(--border); background: var(--panel); }
.quiz-navigation-inner { max-width: 1280px; margin: 0 auto; display: flex; align-items: center; gap: 20px; }
.quiz-navigation-buttons { display: flex; gap: 10px; width: calc((100% - 24px) * .535); }
.quiz-navigation-buttons .btn { flex: 1; }
.quiz-shortcuts { font-size: .75rem; color: var(--text-dim); white-space: nowrap; }
@media (max-width: 1599px) { .quiz-shortcuts { display: none; } }
@media (max-width: 1100px) { .quiz-question-panel, .quiz-feedback-panel { padding: 18px; } }
@media (max-width: 999px) {
  .quiz-columns { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .quiz-feedback-panel { max-height: none; overflow: visible; }
  .quiz-feedback-panel:has(.quiz-feedback-empty) { display: none; }
  .quiz-mode { display: none; }
  .quiz-navigation { padding: 10px 26px; }
  .quiz-navigation-buttons { width: 100%; }
  #page-root[data-exam-view='quiz'] { padding-bottom: 164px; }
}
@media (max-width: 600px) {
  #page-root[data-exam-view='quiz'] { padding-top: 10px; padding-bottom: calc(244px + env(safe-area-inset-bottom, 0px)); }
  #page-root[data-university] .quiz-toolbar { flex-wrap: wrap; gap: 4px 12px; margin-bottom: 8px; }
  #page-root[data-university] .quiz-exit span { display: none; }
  #page-root[data-university] .quiz-exit { min-width: 36px; padding: 6px 10px 6px 0; }
  #page-root[data-university] .quiz-toolbar h1 { font-size: 1rem; }
  #page-root[data-university] .quiz-live-stats { gap: 8px; }
  .quiz-question-panel, .quiz-feedback-panel { padding: 16px; }
  #page-root[data-university] .quiz-workspace .q-text { margin: 10px 0 14px; }
  #page-root[data-university] .quiz-workspace .option { padding: 10px; }
  .quiz-navigation { bottom: calc(76px + env(safe-area-inset-bottom, 0px)); padding-inline: 18px; }
  .quiz-language button { min-height: 44px; }
}