.cert-hub-card--sim {
  border-color: #7c3aed;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(59, 130, 246, 0.06));
}

.cert-hub-card--sim:hover {
  border-color: #6d28d9;
}

.cert-exam-sim-page {
  max-width: 56rem;
}

.cert-sim-facts,
.cert-sim-rules {
  margin: 1.25rem 0;
}

.cert-sim-facts-list,
.cert-sim-rules ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.cert-sim-partial {
  margin: 1rem 0;
}

.cert-sim-start-form {
  margin: 1.25rem 0;
}

.cert-sim-start-btn {
  font-size: 1.05rem;
  padding: 0.65rem 1.4rem;
}

.cert-sim-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 10px;
  background: var(--surface, #fff);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.cert-sim-header-label {
  font-weight: 600;
}

.cert-sim-timer {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1.15rem;
  font-weight: 700;
  margin-left: 0.75rem;
}

.cert-sim-timer.is-low {
  color: #b45309;
}

.cert-sim-timer.is-critical {
  color: #b91c1c;
}

.cert-sim-layout {
  display: grid;
  grid-template-columns: minmax(9rem, 12rem) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

@media (max-width: 760px) {
  .cert-sim-layout {
    grid-template-columns: 1fr;
  }
}

.cert-sim-grid {
  position: sticky;
  top: 5.5rem;
  max-height: calc(100vh - 6rem);
  overflow: auto;
  padding: 0.5rem;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 10px;
  background: var(--surface, #fff);
}

.cert-sim-grid-inner {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.35rem;
}

.cert-sim-grid-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.82rem;
  color: inherit;
  background: #f9fafb;
}

.cert-sim-grid-item:hover {
  border-color: #6366f1;
}

.cert-sim-grid-item.is-current {
  border-color: #4f46e5;
  background: #eef2ff;
  font-weight: 700;
}

.cert-sim-grid-item.is-answered {
  background: #ecfdf5;
  border-color: #6ee7b7;
}

.cert-sim-grid-item.is-marked {
  box-shadow: inset 0 0 0 2px #f59e0b;
}

.cert-sim-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 1rem;
  align-items: center;
}

.cert-sim-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.92rem;
}

.cert-sim-nav-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cert-sim-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.cert-sim-end-btn {
  margin-left: auto;
}
  margin: 1rem 0 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: 10px;
  border: 1px solid var(--border, #d1d5db);
}

.cert-sim-verdict--pass {
  background: #ecfdf5;
  border-color: #6ee7b7;
}

.cert-sim-verdict--fail {
  background: #fef2f2;
  border-color: #fca5a5;
}

.cert-sim-verdict-main {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.cert-sim-verdict-score {
  margin: 0.35rem 0 0;
  font-size: 1.05rem;
}

.cert-sim-verdict-note {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
  opacity: 0.85;
}

.cert-sim-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.25rem;
}

.cert-sim-summary div {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 8px;
}

.cert-sim-summary dt {
  font-size: 0.82rem;
  opacity: 0.8;
}

.cert-sim-summary dd {
  margin: 0.2rem 0 0;
  font-weight: 600;
}

.cert-sim-domain-table th,
.cert-sim-domain-table td {
  font-size: 0.92rem;
}

.cert-sim-review-list {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
}

.cert-sim-review-item {
  margin-bottom: 1rem;
}

.cert-sim-review-item.is-correct .cert-sim-review-head {
  color: #047857;
}

.cert-sim-review-item.is-wrong .cert-sim-review-head {
  color: #b91c1c;
}

.cert-sim-review-item.is-unanswered .cert-sim-review-head {
  color: #92400e;
}

.cert-sim-review-stem {
  margin: 0.35rem 0 0;
}

.cert-sim-review-explain {
  margin: 0.35rem 0 0;
  font-size: 0.9rem;
  opacity: 0.9;
}

.cert-sim-results-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}