.assessment-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4.5rem) 0 4rem;
}

.assessment-intro {
  max-width: 820px;
  margin-bottom: 2rem;
}

.assessment-start-card,
.assessment-results {
  max-width: 920px;
}

.assessment-start-card {
  margin-bottom: 2rem;
}

.assessment-mode-picker {
  margin: 1.4rem 0 0;
  padding: 0;
  border: 0;
}

.assessment-mode-picker legend {
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.assessment-mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.assessment-mode-card {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--surface, #fff);
  cursor: pointer;
}

.assessment-mode-card:has(input:checked) {
  border-color: currentColor;
  box-shadow: 0 0 0 2px rgba(15, 76, 129, 0.13);
}

.assessment-mode-card input {
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.2rem;
  accent-color: #0f4c81;
}

.assessment-mode-card span {
  display: grid;
  gap: 0.25rem;
}

.assessment-mode-card small {
  color: var(--muted);
  line-height: 1.45;
}

.assessment-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.assessment-workspace {
  display: grid;
  gap: 1rem;
}

.assessment-workspace[hidden],
.assessment-results[hidden],
[data-assessment-message][hidden],
[data-assessment-recovery][hidden],
[data-assessment-request-reference][hidden],
[data-assessment-feedback][hidden],
[data-assessment-submit-warning][hidden] {
  display: none;
}

.assessment-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1rem 1.25rem;
}

.assessment-toolbar .eyebrow {
  margin-bottom: 0.2rem;
}

.assessment-metrics {
  display: flex;
  gap: 1.4rem;
}

.assessment-metrics span {
  display: grid;
  min-width: 4.5rem;
  text-align: right;
}

.assessment-metrics small {
  color: var(--muted);
}

.assessment-progress {
  height: 0.45rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-soft, rgba(15, 76, 129, 0.08));
}

.assessment-progress span {
  display: block;
  width: 10%;
  height: 100%;
  border-radius: inherit;
  background: currentColor;
  transition: width 180ms ease;
}

.assessment-layout {
  display: grid;
  grid-template-columns: minmax(190px, 0.26fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.assessment-navigator {
  position: sticky;
  top: 5.5rem;
}

.assessment-navigator h2 {
  margin-top: 0;
  font-size: 1.05rem;
}

.assessment-question-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.assessment-question-button {
  min-width: 2.3rem;
  min-height: 2.3rem;
  border: 1px solid var(--border);
  border-radius: 0.55rem;
  background: var(--surface, #fff);
  color: inherit;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.assessment-question-button[aria-current="step"] {
  outline: 3px solid rgba(15, 76, 129, 0.22);
  border-color: #0f4c81;
}

.assessment-question-button[data-answered="true"] {
  background: var(--surface-soft, rgba(15, 76, 129, 0.08));
}

.assessment-question-button[data-reviewed="true"]::after {
  content: "✓";
  display: block;
  font-size: 0.68rem;
  line-height: 0.7;
}

.assessment-question-card {
  min-width: 0;
}

.assessment-question-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.assessment-question-card fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

.assessment-question-card legend {
  display: block;
  width: 100%;
  margin-bottom: 1.25rem;
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  font-weight: 750;
  line-height: 1.4;
}

.assessment-options {
  display: grid;
  gap: 0.75rem;
}

.assessment-option {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: start;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  cursor: pointer;
}

.assessment-option:has(input:checked) {
  border-color: #0f4c81;
  box-shadow: 0 0 0 2px rgba(15, 76, 129, 0.12);
}

.assessment-option input {
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.2rem;
  accent-color: #0f4c81;
}

.assessment-option-key {
  display: inline-grid;
  place-items: center;
  width: 1.6rem;
  height: 1.6rem;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  font-weight: 800;
}

[data-assessment-feedback] {
  margin-top: 1rem;
}

[data-assessment-feedback][data-correct="true"] {
  border-inline-start: 0.35rem solid #207a4b;
}

[data-assessment-feedback][data-correct="false"] {
  border-inline-start: 0.35rem solid #b7791f;
}

.assessment-feedback-title {
  margin: 0 0 0.4rem;
  font-weight: 800;
}

.assessment-feedback-copy:last-child {
  margin-bottom: 0;
}

.assessment-question-actions {
  justify-content: space-between;
  padding-top: 0.35rem;
}

.assessment-result-grid {
  display: grid;
  grid-template-columns: minmax(130px, 0.22fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: center;
  margin: 1.25rem 0;
}

.assessment-result-grid > div:first-child {
  display: grid;
  gap: 0.25rem;
  text-align: center;
}

.assessment-score {
  font-size: clamp(2rem, 7vw, 3.4rem);
  line-height: 1;
}

.assessment-busy {
  opacity: 0.72;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .assessment-progress span { transition: none; }
}

@media (max-width: 820px) {
  .assessment-layout,
  .assessment-result-grid {
    grid-template-columns: 1fr;
  }

  .assessment-navigator {
    position: static;
  }

  .assessment-question-grid {
    grid-template-columns: repeat(10, minmax(2.3rem, 1fr));
    overflow-x: auto;
    padding-bottom: 0.3rem;
  }
}

@media (max-width: 640px) {
  .assessment-shell {
    width: min(100% - 1rem, 1180px);
    padding-top: 1.5rem;
  }

  .assessment-mode-grid {
    grid-template-columns: 1fr;
  }

  .assessment-toolbar,
  .assessment-question-meta {
    display: grid;
  }

  .assessment-metrics span {
    text-align: left;
  }

  .assessment-question-actions .btn,
  .assessment-start-card > .assessment-actions .btn,
  .assessment-results .assessment-actions .btn {
    flex: 1 1 100%;
    justify-content: center;
  }

  .assessment-question-grid {
    grid-template-columns: repeat(5, minmax(2.5rem, 1fr));
  }
}