/* ZAINFO – 3-level hierarchy menu (accordion / sidebar) */

.zainfo-hierarchy-menu {
  --hm-bg: #f8f9fa;
  --hm-border: #e2e6ea;
  --hm-text: #212529;
  --hm-text-muted: #6c757d;
  --hm-accent: #0056b3;
  --hm-accent-hover: #004494;
  --hm-radius: 6px;
  --hm-pad-x: 0.75rem;
  --hm-pad-y: 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.4;
  color: var(--hm-text);
}

.zainfo-hm-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.zainfo-hm-item {
  margin: 0;
  padding: 0;
}

/* Level 1: Category */
.zainfo-hm-category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--hm-pad-y) var(--hm-pad-x);
  background: var(--hm-bg);
  border: 1px solid var(--hm-border);
  border-radius: var(--hm-radius);
  cursor: pointer;
  text-align: left;
  font-weight: 600;
  color: var(--hm-text);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.zainfo-hm-category:hover,
.zainfo-hm-category:focus {
  background: #eef1f4;
  border-color: #ced4da;
  outline: none;
}

.zainfo-hm-category:focus-visible {
  box-shadow: 0 0 0 2px var(--hm-accent);
}

.zainfo-hm-icon {
  flex-shrink: 0;
  width: 0.6em;
  height: 0.6em;
  margin-left: 0.5rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s ease;
}

.zainfo-hm-category[aria-expanded="true"] .zainfo-hm-icon {
  transform: rotate(-135deg);
}

/* Level 2: Groups container */
.zainfo-hm-groups {
  list-style: none;
  margin: 0.25rem 0 0 0;
  padding: 0 0 0 0.75rem;
  border-left: 2px solid var(--hm-border);
  display: none;
}

.zainfo-hm-groups.zainfo-hm-open {
  display: block;
}

/* Level 2: Group */
.zainfo-hm-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.4rem var(--hm-pad-x);
  background: transparent;
  border: none;
  border-radius: var(--hm-radius);
  cursor: pointer;
  text-align: left;
  font-weight: 500;
  color: var(--hm-text-muted);
  transition: background 0.15s ease, color 0.15s ease;
}

.zainfo-hm-group:hover,
.zainfo-hm-group:focus {
  background: rgba(0, 86, 179, 0.06);
  color: var(--hm-text);
  outline: none;
}

.zainfo-hm-group:focus-visible {
  box-shadow: 0 0 0 1px var(--hm-accent);
}

.zainfo-hm-group .zainfo-hm-icon {
  opacity: 0.7;
}

.zainfo-hm-group[aria-expanded="true"] .zainfo-hm-icon {
  transform: rotate(-135deg);
}

/* Level 3: Subcategories container */
.zainfo-hm-subs {
  list-style: none;
  margin: 0.15rem 0 0 0;
  padding: 0 0 0 0.6rem;
  border-left: 1px solid var(--hm-border);
  display: none;
}

.zainfo-hm-subs.zainfo-hm-open {
  display: block;
}

/* Level 3: Subcategory link */
.zainfo-hm-link {
  display: block;
  padding: 0.35rem var(--hm-pad-x);
  color: var(--hm-accent);
  text-decoration: none;
  border-radius: var(--hm-radius);
  transition: background 0.15s ease, color 0.15s ease;
}

.zainfo-hm-link:hover {
  background: rgba(0, 86, 179, 0.08);
  color: var(--hm-accent-hover);
}

.zainfo-hm-link:focus {
  outline: none;
}

.zainfo-hm-link:focus-visible {
  box-shadow: 0 0 0 1px var(--hm-accent);
}

/* Sidebar layout: use when menu is in a column */
.zainfo-hierarchy-menu.zainfo-hm--sidebar {
  min-width: 260px;
  max-width: 320px;
}

@media (max-width: 767px) {
  .zainfo-hierarchy-menu {
    width: 100%;
  }

  .zainfo-hm-category,
  .zainfo-hm-group {
    padding: 0.6rem var(--hm-pad-x);
  }

  .zainfo-hm-groups {
    padding-left: 0.5rem;
  }

  .zainfo-hm-subs {
    padding-left: 0.5rem;
  }
}