/*
  A1 Audit searchable regulation, chapter and topic index.
  Scope: index.html, solutions.html and demo.html only.
  Brand palette intentionally uses established A1 navy and gold—not black.
*/

.audit-coverage-section {
  --coverage-navy: #081d45;
  --coverage-navy-soft: #16335f;
  --coverage-gold: #d8c27a;
  --coverage-gold-soft: #f7f1dc;
  --coverage-ink: #172033;
  --coverage-muted: #5f6d80;
  --coverage-line: #dfe5ed;
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background:
    radial-gradient(circle at 90% 0%, rgba(216, 194, 122, 0.16), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f6f8fb 100%);
}

.audit-coverage-head {
  max-width: 860px;
}

.audit-coverage-head h2 {
  color: var(--coverage-navy);
}

.audit-coverage-tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: end;
  gap: 0.75rem;
  margin: 1.5rem 0;
  padding: 1rem;
  border: 1px solid var(--coverage-line);
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 12px 30px rgba(8, 29, 69, 0.07);
}

.audit-coverage-tools label {
  grid-column: 1 / -1;
  color: var(--coverage-navy);
  font-weight: 850;
}

.audit-coverage-search {
  width: 100%;
  min-height: 46px;
  padding: 0.75rem 0.9rem;
  border: 1px solid #bdc8d6;
  border-radius: 10px;
  color: var(--coverage-ink);
  background: #ffffff;
  font: inherit;
}

.audit-coverage-search:focus {
  outline: 3px solid rgba(216, 194, 122, 0.35);
  border-color: var(--coverage-gold);
}

.audit-coverage-action {
  min-height: 46px;
  padding: 0.72rem 0.95rem;
  border: 1px solid var(--coverage-navy);
  border-radius: 10px;
  color: var(--coverage-navy);
  background: #ffffff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.audit-coverage-action:hover,
.audit-coverage-action:focus {
  background: var(--coverage-gold-soft);
}

.audit-coverage-result {
  grid-column: 1 / -1;
  min-height: 1.35em;
  margin: 0;
  color: var(--coverage-muted);
  font-size: 0.92rem;
}

.audit-coverage-list {
  display: grid;
  gap: 0.8rem;
}

.audit-coverage-card {
  overflow: clip;
  border: 1px solid var(--coverage-line);
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 8px 22px rgba(8, 29, 69, 0.05);
}

.audit-coverage-card[hidden] {
  display: none;
}

.audit-coverage-card > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.1rem;
  color: var(--coverage-navy);
  cursor: pointer;
  list-style: none;
}

.audit-coverage-card > summary::-webkit-details-marker {
  display: none;
}

.audit-coverage-card > summary::before {
  content: "+";
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  justify-self: end;
  width: 1.8rem;
  height: 1.8rem;
  border: 1px solid rgba(8, 29, 69, 0.24);
  border-radius: 999px;
  text-align: center;
  line-height: 1.65rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.audit-coverage-card[open] > summary::before {
  content: "−";
}

.audit-coverage-card > summary > span {
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
}

.audit-coverage-card > summary > span strong {
  display: block;
  font-size: 1rem;
}

.audit-coverage-card > summary > span small {
  display: block;
  margin-top: 0.2rem;
  color: var(--coverage-muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.audit-coverage-card > summary > b {
  grid-column: 1 / -1;
  grid-row: 2;
  color: var(--coverage-navy-soft);
  font-size: 0.82rem;
  font-weight: 750;
}

.audit-coverage-card[open] > summary {
  border-bottom: 1px solid var(--coverage-line);
  background: var(--coverage-gold-soft);
}

.audit-coverage-body {
  padding: 1.1rem;
}

.audit-coverage-subsection + .audit-coverage-subsection {
  margin-top: 1.6rem;
}

.audit-coverage-subsection h3 {
  margin: 0 0 0.8rem;
  color: var(--coverage-navy);
  font-size: 1rem;
}

.audit-glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 0;
}

.audit-glossary-item {
  padding: 0.8rem;
  border: 1px solid var(--coverage-line);
  border-radius: 10px;
  background: #fbfcfe;
}

.audit-glossary-item[hidden] {
  display: none;
}

.audit-glossary-item dt {
  color: var(--coverage-navy);
  font-weight: 900;
}

.audit-glossary-item dd {
  margin: 0.25rem 0 0;
  color: var(--coverage-muted);
}

.audit-chapter-list,
.audit-topic-grid {
  list-style: none;
  padding: 0;
  margin: 0;
}

.audit-chapter-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.audit-chapter-list li {
  display: grid;
  gap: 0.15rem;
  padding: 0.7rem 0.8rem;
  border-left: 3px solid var(--coverage-gold);
  background: #f9fafc;
}

.audit-chapter-list li[hidden],
.audit-topic-grid li[hidden] {
  display: none;
}

.audit-chapter-list strong {
  color: var(--coverage-navy);
  font-size: 0.84rem;
}

.audit-chapter-list span {
  color: var(--coverage-ink);
}

.audit-topic-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.audit-topic-grid li {
  padding: 0.42rem 0.65rem;
  border: 1px solid var(--coverage-line);
  border-radius: 999px;
  color: var(--coverage-navy);
  background: #ffffff;
  font-size: 0.84rem;
  font-weight: 700;
}

.audit-coverage-note {
  margin: 1.1rem 0 0;
  color: var(--coverage-muted);
  font-size: 0.9rem;
}

.audit-search-match {
  outline: 2px solid rgba(216, 194, 122, 0.75);
  outline-offset: 1px;
}

@media (max-width: 760px) {
  .audit-coverage-tools {
    grid-template-columns: 1fr 1fr;
  }

  .audit-coverage-search {
    grid-column: 1 / -1;
  }

  .audit-glossary-grid,
  .audit-chapter-list {
    grid-template-columns: 1fr;
  }

  .audit-coverage-card > summary {
    padding: 0.9rem;
  }

  .audit-coverage-body {
    padding: 0.9rem;
  }
}

@media (max-width: 480px) {
  .audit-coverage-tools {
    grid-template-columns: 1fr;
  }

  .audit-coverage-action {
    width: 100%;
  }
}