/* ============================================================
   Exam Simulator
   ============================================================ */

.exam-wrap { max-width: 900px; }

/* Start card */
.exam-start-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  box-shadow: var(--shadow-md);
}
.exam-start-card h2 { margin-bottom: 1rem; color: var(--color-primary); }
.exam-info-list { margin: 0 0 1.75rem 1.2rem; color: var(--color-text-muted); }
.exam-info-list li { margin-bottom: .4rem; }

/* Exam header */
.exam-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: .75rem 1.25rem;
  margin-bottom: 1.25rem;
}
.exam-timer-label { font-size: .8rem; opacity: .75; display: block; }
.exam-timer { font-size: 1.6rem; font-weight: 700; letter-spacing: .04em; }
.exam-timer--warning { color: #fca5a5; }

/* Exam body layout */
.exam-body { display: flex; gap: 1.25rem; align-items: flex-start; }
.exam-main { flex: 1; min-width: 0; }
.exam-sidebar { width: 200px; flex-shrink: 0; }

/* Question card */
.exam-question-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1rem;
}
.exam-q-meta { font-size: .8rem; color: var(--color-text-muted); margin-bottom: .75rem; }
.exam-q-text { font-size: 1.05rem; font-weight: 600; color: var(--color-primary); margin-bottom: 1.25rem; line-height: 1.5; }
.exam-options { display: flex; flex-direction: column; gap: .5rem; }
.exam-option {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  padding: .75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  font-size: .95rem;
  line-height: 1.4;
}
.exam-option:hover { background: var(--color-accent-light); border-color: var(--color-accent); }
.exam-option.selected { background: var(--color-accent-light); border-color: var(--color-secondary); font-weight: 500; }
.exam-option input { margin-top: 3px; flex-shrink: 0; }

/* Nav buttons */
.exam-nav-buttons { display: flex; gap: .75rem; }

/* Grid navigator */
.exam-grid-label { font-size: .75rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--color-text-muted); margin-bottom: .5rem; }
.exam-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  margin-bottom: .5rem;
}
.grid-cell {
  padding: 0;
  height: 30px;
  font-size: .75rem;
  font-weight: 600;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-muted);
  transition: background var(--transition);
}
.grid-cell.answered { background: var(--color-secondary); color: #fff; border-color: var(--color-secondary); }
.grid-cell.current  { outline: 2px solid var(--color-primary); outline-offset: 1px; }
.exam-grid-legend { font-size: .7rem; color: var(--color-text-muted); }
.legend-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 2px;
  vertical-align: middle;
}
.legend-dot.answered { background: var(--color-secondary); }
.legend-dot.current  { outline: 2px solid var(--color-primary); background: var(--color-surface-2); }

/* Results */
.exam-results-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.result-timeout { color: var(--color-warning); margin-bottom: 1rem; }
.result-verdict {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: .08em;
  margin-bottom: .5rem;
}
.result-verdict.pass { color: var(--color-success); }
.result-verdict.fail { color: #dc2626; }
.result-score-wrap { margin-bottom: .75rem; }
.result-score  { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.result-percent { font-size: 1.2rem; color: var(--color-text-muted); margin-left: .75rem; }
.result-msg  { color: var(--color-text-muted); margin-bottom: 1.5rem; }
.result-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* Review */
.review-heading { margin-bottom: 1.25rem; color: var(--color-primary); }
.review-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.review-item.review-correct { border-left-color: var(--color-success); }
.review-item.review-wrong   { border-left-color: #dc2626; }
.review-item.review-skipped { border-left-color: var(--color-warning); }
.review-meta { font-size: .8rem; color: var(--color-text-muted); margin-bottom: .5rem; }
.review-q    { font-weight: 600; color: var(--color-primary); margin-bottom: .75rem; line-height: 1.4; }
.review-opts { list-style: none; padding: 0; display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; }
.review-opts li { padding: .4rem .75rem; border-radius: var(--radius-sm); background: var(--color-surface-2); }
.review-opt-correct { background: #dcfce7 !important; color: #166534; }
.review-opt-wrong   { background: #fee2e2 !important; color: #991b1b; }
.review-footer { margin-top: 1.5rem; }

@media (max-width: 680px) {
  .exam-body { flex-direction: column; }
  .exam-sidebar { width: 100%; }
  .exam-grid { grid-template-columns: repeat(10, 1fr); }
  .exam-header { flex-direction: column; align-items: flex-start; gap: .5rem; }
}