/* Shared navigation. HTML links remain available when JavaScript is disabled. */
.site-header.has-dropdown-nav { position: relative; z-index: 30; }
.has-dropdown-nav .header-inner { gap: 20px; }
.has-dropdown-nav .nav { gap: clamp(12px, 1.6vw, 24px); overflow: visible; }
.has-dropdown-nav .nav a { font-size: 0.88rem; }
.has-dropdown-nav .nav > a,
.has-dropdown-nav .nav-parent > a { padding-block: 12px; }
.has-dropdown-nav .nav a.active { color: var(--accent-dark); }
.nav-dropdown { position: relative; }
.nav-parent { display: flex; align-items: center; gap: 2px; }
.nav-disclosure {
  display: none;
  width: 30px;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--accent-dark);
  cursor: pointer;
}
.nav-ready .nav-disclosure { display: inline-flex; }
.nav-disclosure svg { width: 14px; height: 14px; transition: transform 0.15s ease; }
.nav-disclosure[aria-expanded="true"] svg { transform: rotate(180deg); }
.nav-disclosure:hover { background: var(--surface-green); }
.nav-panel {
  display: grid;
  gap: 2px;
  min-width: 250px;
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  list-style: none;
}
.nav-ready .nav-panel {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: -12px;
  z-index: 1;
  box-shadow: 0 12px 30px rgba(40, 42, 39, 0.08);
}
.nav-ready .nav-dropdown.is-open > .nav-panel { display: grid; }
.has-dropdown-nav .nav-panel a {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ink);
  font-size: 0.87rem;
  line-height: 1.4;
  white-space: normal;
}
.has-dropdown-nav .nav-panel a:hover,
.has-dropdown-nav .nav-panel a.active { background: var(--surface-green); color: var(--accent-dark); }
.has-dropdown-nav a:focus-visible,
.has-dropdown-nav button:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.has-dropdown-nav .header-cta { font-size: 0.81rem; padding-inline: 17px; }
.header-cta-short { display: none; }

/* No-JS fallback: every destination is a normal visible link, not a hidden menu. */
.has-dropdown-nav:not(.nav-ready) .header-inner { flex-wrap: wrap; padding-block: 14px; }
.has-dropdown-nav:not(.nav-ready) .nav { order: 3; width: 100%; align-items: flex-start; justify-content: flex-start; flex-wrap: wrap; }

.materials-hub { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.materials-hub .card-link { display: flex; margin-top: 0; flex-direction: column; align-items: flex-start; }
.materials-hub h2 { margin-top: 10px; font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
.materials-hub p { margin-top: 12px; color: var(--muted); }
.materials-hub strong { margin-top: auto; padding-top: 22px; color: var(--accent-dark); }

@media (max-width: 1180px) {
  .site-header.has-dropdown-nav .header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px 14px;
    padding-block: 12px;
  }
  .has-dropdown-nav .brand { grid-column: 1; grid-row: 1; }
  .has-dropdown-nav .header-actions { grid-column: 2; grid-row: 1; }
  .has-dropdown-nav.nav-ready .nav-toggle { display: inline-flex; }
  .site-header.has-dropdown-nav .nav {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
  }
  .has-dropdown-nav.nav-ready .nav { display: none; }
  .has-dropdown-nav.nav-ready .nav.is-open { display: flex; }
  .has-dropdown-nav .nav > a,
  .has-dropdown-nav .nav-parent > a { display: block; padding: 12px; border-radius: 8px; }
  .has-dropdown-nav .nav > a:hover,
  .has-dropdown-nav .nav-parent > a:hover,
  .has-dropdown-nav .nav > a.active { background: var(--surface-green); }
  .has-dropdown-nav .nav-parent { justify-content: space-between; gap: 8px; }
  .has-dropdown-nav .nav-parent > a { flex: 1; min-width: 0; }
  .has-dropdown-nav .nav-disclosure { width: 44px; min-height: 44px; }
  .has-dropdown-nav .nav-panel {
    position: static;
    min-width: 0;
    margin: 2px 4px 8px 12px;
    padding: 4px;
    border: 0;
    border-left: 2px solid var(--accent-soft);
    border-radius: 0;
    box-shadow: none;
  }
  .has-dropdown-nav .nav-panel a { padding: 10px 14px; }
}
@media (max-width: 700px) {
  .header-cta-full { display: none; }
  .header-cta-short { display: inline; }
  .materials-hub { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
  .site-header.has-dropdown-nav .header-inner { gap: 10px 6px; }
  .has-dropdown-nav .brand { font-size: 0.95rem; }
  .has-dropdown-nav .header-actions { gap: 5px; }
  .has-dropdown-nav .header-cta,
  .has-dropdown-nav .nav-toggle { min-height: 40px; padding-inline: 10px; font-size: 0.75rem; }
}
@media (max-width: 359px) {
  .site-header.has-dropdown-nav .header-inner { grid-template-columns: minmax(0, 1fr); }
  .has-dropdown-nav .header-actions { grid-column: 1; grid-row: 2; justify-content: space-between; }
  .site-header.has-dropdown-nav .nav { grid-row: 3; }
}
@media (prefers-reduced-motion: reduce) { .nav-disclosure svg { transition: none; } }