/* Knowledge Hub — shared quiz, map, and Architecture 1.0 styles
 * Generic engine for all knowledge hubs. Each hub page sets its own
 * --kh-color-* custom properties before loading this stylesheet.
 *
 * Default theme (teal) is provided; hub pages override as needed:
 *   --kh-color-primary, --kh-color-primary-light, --kh-color-primary-dark,
 *   --kh-color-primary-border
 */

/* ---------- Default theme (can be overridden per hub) ---------- */
:root {
  --kh-color-primary: #0d9488;
  --kh-color-primary-light: #f0fdfa;
  --kh-color-primary-dark: #0f766e;
  --kh-color-primary-border: #99f6e4;
  --kh-color-warning: #dc2626;
  --kh-color-success: #059669;
  --kh-color-wrong: #ef4444;
  --kh-color-correct: #16a34a;
}

/* ---------- Page hero ---------- */
.kh-hero {
  border-bottom: 3px solid var(--kh-color-primary);
}

.kh-hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-soft);
  margin-top: 0.5rem;
}

.kh-product-framing {
  max-width: 720px;
  margin: 1.5rem auto 0;
  padding: 1.25rem 1.5rem;
  background: var(--kh-color-primary-light);
  border-left: 4px solid var(--kh-color-primary);
  border-radius: 0.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text);
}

/* ---------- Section spacing ---------- */
.kh-section {
  margin: 2.5rem 0;
}

.kh-section-title {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

/* ---------- Knowledge Map ---------- */
.kh-knowledge-map {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 1rem 0;
}

.kh-map-step {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 540px;
  padding: 1rem 1.25rem;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.kh-map-step:hover,
.kh-map-step:focus-visible {
  border-color: var(--kh-color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.kh-map-step:focus-visible {
  outline: 2px solid var(--kh-color-primary);
  outline-offset: 2px;
}

.kh-map-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--kh-color-primary);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.1rem;
}

.kh-map-content {
  flex: 1;
}

.kh-map-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.kh-map-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0.25rem 0 0;
}

.kh-map-connector {
  width: 3px;
  height: 24px;
  background: var(--kh-color-primary-border);
  margin: 0 auto;
}

/* ---------- Test cards ---------- */
.kh-test-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.kh-test-card {
  padding: 1.25rem 1.5rem;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.kh-test-card:hover {
  border-color: var(--kh-color-primary);
  box-shadow: var(--shadow-sm);
}

.kh-test-card-level {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--kh-color-primary-dark);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.kh-test-card-title {
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.kh-test-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin: 0 0 1rem;
}

/* ---------- Buttons ---------- */
.kh-btn {
  display: inline-block;
  padding: 0.625rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-sans);
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.1s ease;
}

.kh-btn:active {
  transform: scale(0.98);
}

.kh-btn-primary {
  background: var(--kh-color-primary);
  color: #fff;
}

.kh-btn-primary:hover {
  background: var(--kh-color-primary-dark);
}

.kh-btn-secondary {
  background: var(--color-bg-muted);
  color: var(--color-text);
}

.kh-btn-secondary:hover {
  background: var(--color-border);
}

/* ---------- Quiz ---------- */
.kh-quiz-header {
  margin-bottom: 2rem;
}

.kh-quiz-header h2 {
  margin: 0 0 0.25rem;
  font-size: 1.4rem;
}

.kh-quiz-level {
  font-size: 0.85rem;
  color: var(--kh-color-primary-dark);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kh-quiz-desc {
  color: var(--color-text-soft);
  margin: 0.5rem 0 0;
}

.kh-question-card {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 0 0 1.25rem;
  background: var(--color-bg);
  transition: border-color 0.3s ease;
}

.kh-question-card.kh-unanswered {
  border-color: var(--kh-color-warning);
  animation: kh-shake 0.4s ease;
}

@keyframes kh-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.kh-question-number {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--kh-color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kh-question-text {
  font-size: 1.05rem;
  font-weight: 500;
  margin: 0.75rem 0 1rem;
  line-height: 1.5;
}

.kh-choices {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.kh-choice-label {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  line-height: 1.45;
}

.kh-choice-label:hover {
  border-color: var(--kh-color-primary-border);
  background: var(--kh-color-primary-light);
}

.kh-choice-label input[type="radio"] {
  margin-top: 0.2rem;
  flex-shrink: 0;
  accent-color: var(--kh-color-primary);
}

.kh-choice-label input[type="radio"]:checked + .kh-choice-text {
  font-weight: 600;
}

.kh-choice-label:has(input[type="radio"]:checked) {
  border-color: var(--kh-color-primary);
  background: var(--kh-color-primary-light);
}

.kh-choice-text {
  font-size: 0.95rem;
}

.kh-quiz-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* ---------- Results ---------- */
.kh-results {
  animation: kh-fadein 0.4s ease;
}

@keyframes kh-fadein {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.kh-results-header {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--kh-color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.kh-results-header h2 {
  margin: 0 0 1rem;
  font-size: 1.3rem;
}

.kh-score-display {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.kh-score-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--kh-color-primary-dark);
  line-height: 1;
}

.kh-score-separator {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.kh-score-total {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
}

.kh-score-bar {
  width: 100%;
  max-width: 300px;
  height: 10px;
  background: var(--color-border);
  border-radius: 5px;
  margin: 0 auto 0.75rem;
  overflow: hidden;
}

.kh-score-fill {
  height: 100%;
  background: var(--kh-color-primary);
  border-radius: 5px;
  transition: width 0.6s ease;
}

.kh-score-label {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--kh-color-primary-dark);
  margin: 0;
}

/* ---------- Missed question review ---------- */
.kh-missed-review h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.kh-missed-card {
  padding: 1.25rem 1.5rem;
  border: 2px solid var(--color-border);
  border-left: 4px solid var(--kh-color-wrong);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  background: var(--color-bg);
}

.kh-missed-question {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  line-height: 1.5;
}

.kh-missed-your-answer {
  margin: 0 0 0.4rem;
  font-size: 0.93rem;
}

.kh-missed-correct {
  margin: 0 0 0.4rem;
  font-size: 0.93rem;
}

.kh-missed-explanation {
  margin: 0.75rem 0 0;
  font-size: 0.93rem;
  color: var(--color-text-soft);
  line-height: 1.55;
}

.kh-label-wrong {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  background: #fef2f2;
  color: var(--kh-color-wrong);
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.82rem;
}

.kh-label-correct {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  background: #ecfdf5;
  color: var(--kh-color-correct);
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.82rem;
}

.kh-perfect-score {
  text-align: center;
  padding: 2rem;
  background: #ecfdf5;
  border: 2px solid var(--kh-color-correct);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--kh-color-correct);
}

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

/* ---------- Loading ---------- */
.kh-loading {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* ---------- Architecture 1.0 hub components ---------- */

.hub-breadcrumb ol { display: flex; flex-wrap: wrap; list-style: none; padding: 0; gap: 0.25rem; font-size: 0.875rem; }
.hub-breadcrumb li + li::before { content: "/"; margin-right: 0.25rem; color: #6b7280; }
.hub-breadcrumb [aria-current="page"] { color: var(--kh-color-primary-dark); font-weight: 600; }

.hub-panel { border-left: 4px solid var(--kh-color-primary); background: var(--kh-color-primary-light); padding: 1.5rem; border-radius: 0.5rem; margin: 2rem 0; }
.hub-panel h2 { margin-top: 0; font-size: 1.1rem; }

.hub-checkmarks { list-style: none; padding-left: 0; }
.hub-checkmarks li::before { content: "\2713 "; color: var(--kh-color-success); font-weight: bold; }

.hub-warning-signs { border-left-color: var(--kh-color-warning); background: #fef2f2; }

.hub-decision-outcome { margin: 2rem 0; }
.hub-outcome-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.hub-outcome { padding: 1.5rem; border-radius: 0.5rem; }
.hub-outcome-yes { background: #ecfdf5; border: 1px solid #059669; }
.hub-outcome-no { background: #fef3c7; border: 1px solid #d97706; }

.hub-actions { margin: 2rem 0; }
.hub-action-list { padding-left: 1.5rem; }
.hub-action-list li { margin-bottom: 0.75rem; }

.hub-north-star { text-align: center; margin: 3rem 0; padding: 2rem; background: #f9fafb; border-radius: 0.75rem; }
.hub-cta { display: inline-block; padding: 0.875rem 2rem; background: var(--kh-color-primary); color: #fff; font-weight: 600; text-decoration: none; border-radius: 0.5rem; }
.hub-cta:hover { background: var(--kh-color-primary-dark); }
.hub-cta-note { margin-top: 0.75rem; font-size: 0.875rem; color: #6b7280; }

.hub-next-decision { margin: 2.5rem 0; padding: 1.5rem; background: #f9fafb; border-radius: 0.5rem; text-align: center; }
.hub-next-link { font-size: 1.2rem; font-weight: 600; color: var(--kh-color-primary-dark); text-decoration: none; }
.hub-next-link:hover { text-decoration: underline; }

.hub-related-topics { margin: 2rem 0; }
.hub-related-topics ul { display: flex; flex-wrap: wrap; gap: 0.75rem; list-style: none; padding: 0; }
.hub-related-topics a { display: inline-block; padding: 0.5rem 1rem; background: #f3f4f6; border-radius: 0.25rem; text-decoration: none; color: #374151; }
.hub-related-topics a:hover { background: var(--kh-color-primary-light); color: var(--kh-color-primary-dark); }

.hub-evidence { font-size: 0.75rem; padding: 0.15rem 0.4rem; border-radius: 0.25rem; font-weight: 600; vertical-align: super; }
.hub-evidence[data-level="federal-law"] { background: #dcfce7; color: #166534; }
.hub-evidence[data-level="state-law"] { background: #e0e7ff; color: #3730a3; }
.hub-evidence[data-level="industry"] { background: #ffedd5; color: #9a3412; }
.hub-evidence[data-level="boh-guidance"] { background: #f3f4f6; color: #374151; }
.hub-evidence[data-level="research"] { background: #ede9fe; color: #5b21b6; }

.hub-verified { margin-top: 1.5rem; font-size: 0.875rem; color: #6b7280; }

.hub-page-meta { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--color-border); }
.hub-evidence-legend { margin-bottom: 1.5rem; }
.hub-evidence-legend ul { list-style: none; padding: 0; }
.hub-evidence-legend li { margin-bottom: 0.4rem; font-size: 0.9rem; }

.hub-sources ol { padding-left: 1.5rem; }
.hub-sources li { margin-bottom: 0.5rem; font-size: 0.9rem; }
.hub-sources a { color: var(--kh-color-primary-dark); }

.hub-disclaimer {
  margin: 2rem 0;
  padding: 1.25rem 1.5rem;
  background: #fffbeb;
  border-left: 4px solid #f59e0b;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-soft);
}

/* ---------- Knowledge index page ---------- */
.kh-index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.kh-index-card {
  display: block;
  padding: 1.5rem 2rem;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-left: 5px solid var(--kh-color-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
}

.kh-index-card:hover {
  border-color: var(--kh-color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.kh-index-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  margin-bottom: 0.5rem;
}

.kh-index-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.kh-index-card-desc {
  font-size: 0.95rem;
  color: var(--color-text-soft);
  margin: 0 0 0.75rem;
  line-height: 1.5;
}

.kh-index-card-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ---------- Homepage knowledge section ---------- */
.kh-home-section {
  margin: 2rem 0;
}

.kh-home-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.kh-home-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}

.kh-home-card:hover {
  border-color: #0d9488;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.kh-home-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
}

.kh-home-card-body {
  flex: 1;
}

.kh-home-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.25rem;
}

.kh-home-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  margin: 0;
}

/* ---------- Responsive ---------- */
@media (min-width: 600px) {
  .kh-test-grid {
    grid-template-columns: 1fr 1fr;
  }
  .kh-index-grid {
    grid-template-columns: 1fr 1fr;
  }
  .kh-home-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .kh-test-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .hub-outcome-grid {
    grid-template-columns: 1fr;
  }

  .kh-map-step {
    padding: 0.875rem 1rem;
  }

  .kh-question-card {
    padding: 1rem;
  }

  .kh-choice-label {
    padding: 0.625rem 0.75rem;
  }

  .kh-results-header {
    padding: 1.5rem 0.75rem;
  }

  .kh-score-number {
    font-size: 2.25rem;
  }

  .kh-score-total {
    font-size: 1.5rem;
  }
}