.exam-mode body {
  background: var(--bg-app);
}

.exam {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 16px 48px;
}

.exam__bar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  background: var(--bg-app);
  border-bottom: 1px solid var(--border-subtle);
}

.exam__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.exam__eyebrow {
  font-size: var(--fs-2xs);
  color: var(--text-muted);
}

.exam__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--text-primary);
}

.exam__meta {
  display: flex;
  gap: 8px;
  flex: none;
}

.exam__chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  font: 500 var(--fs-sm) var(--font-mono);
  color: var(--text-primary);
}

.exam__timer .is-low {
  color: var(--danger-fg);
  font-weight: 600;
}

.exam__rules {
  display: flex;
  gap: 10px;
  margin: 16px 0;
  padding: 12px 14px;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  background: var(--accent-subtle);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.exam__rules .ic {
  flex: none;
  margin-top: 2px;
  color: var(--text-gold);
}

.exam__form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.exam-q {
  margin: 0;
  padding: 16px 18px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--surface-1);
  min-width: 0;
}

.exam-q__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 0;
  margin-bottom: 12px;
}

.exam-q__num {
  flex: none;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--accent-subtle);
  color: var(--text-gold);
  font: 600 var(--fs-sm) var(--font-mono);
}

.exam-q__text {
  flex: 1;
  min-width: 0;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
}

.exam-q__points {
  flex: none;
  font: 500 var(--fs-xs) var(--font-mono);
  color: var(--text-muted);
}

.exam-q__hint {
  margin: -4px 0 10px 40px;
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.exam-q__options {
  display: grid;
  gap: 8px;
  padding-left: 40px;
}

.exam-q__answer {
  width: 100%;
  margin-left: 0;
}

.exam-opt {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--surface-2);
  cursor: pointer;
}

.exam-opt:hover {
  border-color: var(--border-strong);
}

.exam-opt input {
  flex: none;
  accent-color: var(--accent);
}

.exam-opt:has(input:checked) {
  border-color: var(--border-gold);
  background: var(--accent-subtle);
}

.exam-opt__letter {
  flex: none;
  width: 22px;
  font: 600 var(--fs-xs) var(--font-mono);
  color: var(--text-muted);
}

.exam-opt__text {
  flex: 1;
  min-width: 0;
}

.exam__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 8px;
}

.exam.is-ended .exam__form {
  filter: blur(6px);
  pointer-events: none;
}

.exam__ended {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: var(--surface-overlay);
}

.exam__ended[hidden] {
  display: none;
}

.exam__ended-box {
  max-width: 440px;
  padding: 28px 24px;
  border: 1px solid var(--danger);
  border-radius: var(--radius-lg);
  background: var(--surface-raised);
  box-shadow: var(--shadow-3);
  text-align: center;
}

.exam__ended-box > .ic {
  width: 40px;
  height: 40px;
  color: var(--danger-fg);
}

.exam__ended-box h2 {
  margin: 10px 0 6px;
  font-family: var(--font-display);
}

.exam__ended-box [data-exam-ended-text] {
  font-weight: 600;
  color: var(--danger-fg);
}

.exam-rules {
  margin: 0;
  padding-left: 20px;
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.exam-card__desc {
  margin: 0;
}

.exam-result__body {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.exam-result__icon .ic {
  width: 44px;
  height: 44px;
}

.exam-result--success .exam-result__icon { color: var(--success-fg); }
.exam-result--danger .exam-result__icon { color: var(--danger-fg); }
.exam-result--warning .exam-result__icon { color: var(--warning-fg); }
.exam-result--neutral .exam-result__icon { color: var(--text-muted); }

.exam-result__title {
  margin: 4px 0 6px;
  font-family: var(--font-display);
}

.exam-result__score .mono {
  font-size: var(--fs-2xl);
  color: var(--text-primary);
}

.exam-edit-q__title,
.exam-review-q__text {
  white-space: normal;
}

.exam-review-options {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.exam-review-options li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.exam-review-options li.is-right {
  border-color: var(--success);
}

.exam-review-options li.is-picked:not(.is-right) {
  border-color: var(--danger);
  background: var(--danger-subtle);
}

.exam-review-answer {
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  white-space: normal;
}

.exam-review-score {
  max-width: 180px;
}

@media (max-width: 640px) {
  .exam__bar { flex-wrap: wrap; }
  .exam-q__options,
  .exam-q__hint { padding-left: 0; margin-left: 0; }
}

.exam__steps { display: flex; flex-wrap: wrap; gap: 6px; }
.exam__step-btn {
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  color: var(--text-secondary);
  font: 600 13px/1 var(--font-sans);
  cursor: pointer;
}
.exam__step-btn:hover { border-color: var(--border-strong); color: var(--text-primary); }
.exam__step-btn:focus-visible { outline: 0; box-shadow: var(--focus-ring); }
.exam__step-btn.is-done { background: var(--accent-subtle); border-color: var(--border-gold); color: var(--text-primary); }
.exam__step-btn.is-current { background: var(--accent); border-color: var(--accent-press); color: var(--text-on-accent); }
.exam.is-paged .exam-q { min-height: 240px; }
.exam.is-paged .exam-q__head:focus { outline: 0; }
.exam__pager { display: flex; align-items: center; gap: 10px; }
.exam__where { flex: 1; text-align: center; font: 400 14px/1.3 var(--font-sans); color: var(--text-muted); }
.exam__pager .btn[hidden] { display: none; }

@media (max-width: 640px) {
  .exam__pager { flex-wrap: wrap; }
  .exam__where { flex-basis: 100%; order: -1; }
  .exam__pager .btn { flex: 1; }
}

.exam-q__image {
  display: block;
  max-width: 100%;
  max-height: 420px;
  margin: 4px 0 14px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--surface-3);
  cursor: zoom-in;
}
.exam-review-q .exam-q__image { margin: 0; max-height: 320px; }
.exam-image-field { display: flex; gap: 12px; align-items: stretch; }
.exam-image-field__preview {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 140px;
  min-height: 96px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--surface-3);
  overflow: hidden;
}
.exam-image-field__preview img { max-width: 100%; max-height: 140px; object-fit: contain; }
.exam-image-field__upload { padding: 12px; }

@media (max-width: 640px) {
  .exam-image-field { flex-direction: column; }
  .exam-image-field__preview { width: 100%; }
}