/* Navigation globale : deux niveaux sur bureau, rubriques groupées sur mobile. */
#specialties, #popular, [id^="lettre-"], body .suggestion-card,
body .guide-step, body #outils, body .av-workspace {
  scroll-margin-top: calc(var(--stack-h, 4rem) + 1rem);
}
.site-header--two-level { position: relative; }
.site-header__utility {
  min-height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.nav-search, .nav-about, .nav-main-row { display: none; }
.nav-mobile-actions { display: flex; gap: 0.5rem; }
.nav-mobile-actions .nav-icon-btn { width: 2.75rem; height: 2.75rem; display: inline-flex; }
.nav-mobile-actions span { display: inline-flex; }
.site-header--two-level svg { flex-shrink: 0; width: 1.25rem; height: 1.25rem; }
.nav-disclosure { position: relative; }
.primary-nav__trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 2.75rem;
  padding: 0.625rem 0.875rem;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: 4px;
  font: inherit;
  cursor: pointer;
}
.primary-nav__trigger[aria-expanded="true"] { background: var(--teal-bg); color: var(--teal-text); }
.primary-nav__trigger[aria-expanded="true"] > svg { transform: rotate(180deg); }
.nav-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  z-index: 1;
  width: 23rem;
  max-height: calc(100dvh - var(--stack-h, 9rem) - 1rem);
  overflow-y: auto;
  padding: 0.5rem 1rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 4px;
  box-shadow: 0 10px 24px -12px rgb(15 23 42 / 24%);
}
.nav-dropdown--calculators { left: 0; }
.nav-dropdown--tools { right: 0; }
.nav-dropdown > a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 0.5rem;
  font-size: 1.125rem;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
}
.nav-dropdown > a:last-child { border-bottom: 0; }
.nav-dropdown > a:hover, .nav-dropdown > a[aria-current] { background: var(--teal-bg); }
.nav-dropdown--tools > a { flex-direction: row; align-items: flex-start; gap: 1rem; padding-block: 1.25rem; }
.nav-dropdown--tools > a > svg { margin-top: 0.25rem; color: var(--ink-soft); width: 1.5rem; height: 1.5rem; }
.nav-dropdown > a > span:not(.nav-tool-copy), .nav-tool-copy > span { color: var(--ink-soft); font-size: 0.875rem; line-height: 1.5; }
.nav-tool-copy { display: flex; flex-direction: column; gap: 0.25rem; min-width: 0; }
.nav-tool-copy strong { font-weight: 600; }

.nav-mobile {
  position: absolute;
  inset: 100% 0 auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--surface);
  border-block: 1px solid var(--rule);
  box-shadow: 0 12px 24px -12px rgb(15 23 42 / 24%);
}
.nav-mobile__inner { padding-block: 0.75rem 1.25rem; }
.nav-mobile__label {
  padding: 0.875rem 0.75rem 0.375rem;
  color: var(--ink-faint);
  font: 500 0.6875rem/1.5 'IBM Plex Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.nav-mobile__inner > a {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.625rem 0.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--rule-soft);
}
.nav-mobile__inner > a:hover, .nav-mobile__inner > a[aria-current] { color: var(--teal-text); background: var(--teal-bg); }
.nav-mobile__inner > a[aria-current] { box-shadow: inset 3px 0 var(--teal); }
.nav-mobile__inner > .nav-mobile__tool { align-items: flex-start; gap: 0.875rem; padding-block: 0.875rem; }
.nav-mobile__tool > svg { margin-top: 0.25rem; color: var(--ink-soft); }
.nav-mobile__footer { display: flex; gap: 1.5rem; padding: 0.75rem 0.75rem 0; }
.nav-mobile__footer > a { display: flex; align-items: center; min-height: 2.75rem; color: var(--ink-soft); font-size: 0.875rem; }

@media (min-width: 1100px) {
  .site-header--two-level > .container, .primary-nav { max-width: 90rem; padding-inline: clamp(2rem, 4.5vw, 4.5rem); }
  .site-header__utility { display: grid; grid-template-columns: 15rem minmax(0, 1fr) 8rem; min-height: 5.25rem; gap: 2rem; }
  .site-header--two-level .site-logo__mark { width: 3rem; height: 3rem; }
  .site-header--two-level .site-logo__name { font-size: 1.875rem; }
  .nav-mobile-actions, .nav-mobile { display: none !important; }
  .nav-about { display: block; justify-self: end; padding-block: 0.75rem; color: var(--ink-soft); font-size: 1rem; }
  .nav-about:hover, .nav-about[aria-current] { color: var(--teal-text); }
  .nav-search {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    width: 100%;
    max-width: 44rem;
    justify-self: center;
    min-height: 3rem;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--rule);
    border-radius: 5px;
    background: var(--surface-alt);
    color: var(--ink-faint);
    font: inherit;
    font-size: 1.125rem;
    text-align: left;
    cursor: pointer;
  }
  .nav-search:hover { border-color: var(--ink-faint); }
  .nav-search > span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .nav-search kbd { padding: 0.125rem 0.375rem; border: 1px solid var(--rule); border-radius: 3px; background: var(--surface); font: 0.75rem/1.5 'IBM Plex Mono', monospace; white-space: nowrap; }
  .nav-main-row { display: block; border-top: 1px solid var(--rule-soft); }
  .primary-nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.25rem; color: var(--ink); font-size: 1.125rem; }
  .primary-nav > a { display: flex; align-items: center; min-height: 4.25rem; padding: 0.75rem 0.5rem; border-bottom: 3px solid transparent; white-space: nowrap; }
  .primary-nav > a:hover, .primary-nav > a[aria-current], .primary-nav__trigger[aria-current] { color: var(--teal-text); }
  .primary-nav > a[aria-current] { border-bottom-color: var(--teal-text); font-weight: 600; }
}