/* ============ NAV (FLOATING SLAB) ============
   Loaded after each page's own styles so it overrides the older dark nav.
   The header is a white frosted slab inset from the viewport edge. At the top
   of the page it sits on a navy strip; once scrolled (.nav--scrolled, set by
   the inline script after </nav>) the strip goes transparent so the slab
   floats over the content. */
:root {
  --bar-inset: 12px;
  --bar-el: 42px;
  --bar-h: calc(var(--bar-el) + 2 * var(--bar-inset));
  --bar-radius: 12px;
  --bar-glass: rgba(255, 255, 255, 0.94);
  --bar-ink: #0A0D14;
  --bar-muted: rgba(10, 13, 20, 0.62);
  --bar-line: rgba(10, 13, 20, 0.08);
  --bar-shadow:
    0 20px 20px -10px rgba(0, 0, 0, 0.28),
    0 10px 10px -5px rgba(0, 0, 0, 0.28),
    0 6px 6px -3px rgba(0, 0, 0, 0.28),
    0 3px 3px -1.5px rgba(0, 0, 0, 0.28),
    0 1px 1px -0.5px rgba(0, 0, 0, 0.28),
    0 0 0 1px rgba(10, 13, 20, 0.5),
    inset 0 -1px 1px -0.5px rgba(10, 13, 20, 0.06);
  --bar-ease: cubic-bezier(0.19, 1, 0.22, 1);
}

/* overflow-x: hidden on body makes it a scroll container, which stops the
   sticky nav from sticking to the viewport. clip hides overflow the same way
   without that side effect. */
body { overflow-x: clip; }

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: auto;
  padding: var(--bar-inset);
  background: var(--navy, #0A0D14);
  border-bottom: 0;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  color: var(--bar-ink);
  transition: background-color 300ms ease;
}
.nav.nav--scrolled { background: transparent; }

.nav .nav__inner {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  max-width: 1320px;
  height: var(--bar-h);
  margin: 0 auto;
  padding: 0 var(--bar-inset) 0 20px;
  gap: 20px;
  background: var(--bar-glass);
  backdrop-filter: blur(15px) saturate(140%);
  -webkit-backdrop-filter: blur(15px) saturate(140%);
  border-radius: var(--bar-radius);
  box-shadow: var(--bar-shadow);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .nav .nav__inner { background: #fff; }
}

.nav .nav__logo { display: inline-flex; align-items: center; height: var(--bar-el); }
.nav .nav__logo img { display: block; width: auto; height: 24px; }

/* Links: muted grey, bold, ink on hover with a soft chip behind */
.nav .nav__link {
  position: relative;
  z-index: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--bar-muted);
  opacity: 1;
  transition: color 300ms ease;
}
.nav .nav__link::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 2px -10px;
  border-radius: 8px;
  background: transparent;
  transition: background-color 300ms ease;
}
.nav .nav__link:hover,
.nav .nav__link:focus-visible,
.nav .nav__item--has-dropdown:hover > .nav__link { color: var(--bar-ink); }
.nav .nav__link:hover::before,
.nav .nav__link:focus-visible::before,
.nav .nav__item--has-dropdown:hover > .nav__link::before { background: rgba(10, 13, 20, 0.05); }
.nav .nav__chev { opacity: 0.5; }

/* CTA: solid ink block, arrow nudges on hover */
.nav .nav__cta .btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: var(--bar-el);
  padding: 0 22px;
  border-radius: 8px;
  border: 0;
  background: var(--bar-ink);
  color: #F4F2EE;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  text-transform: none;
  white-space: nowrap;
  box-shadow: none;
  transform: none;
  transition: background-color 300ms ease;
}
.nav .nav__cta .btn::after {
  content: "\2192";
  font-family: var(--font-body);
  letter-spacing: 0;
  transition: transform 500ms var(--bar-ease);
}
.nav .nav__cta .btn:hover { background: var(--blue-cta, #1A56FF); }
.nav .nav__cta .btn:hover::after { transform: translateX(4px); }

/* Burger: ink lines on the light slab */
.nav .nav__burger { gap: 4px; margin-right: 0; }
.nav .nav__burger span { background: var(--bar-ink); }

/* ── Desktop dropdowns: white panel just below the slab ── */
@media (min-width: 1024px) {
  .nav .nav__dropdown {
    top: calc(100% + 22px);
    padding: 8px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(15px) saturate(140%);
    -webkit-backdrop-filter: blur(15px) saturate(140%);
    border: 0;
    border-radius: var(--bar-radius);
    box-shadow: var(--bar-shadow);
    transform: translateX(-50%) translateY(10px);
    transition: opacity 300ms ease, transform 420ms var(--bar-ease), visibility 300ms;
  }
  /* Invisible bridge so the pointer can cross the gap without closing it */
  .nav .nav__dropdown::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -24px;
    height: 24px;
  }
  .nav .nav__dropdown--cols { padding: 16px 8px; }
  .nav .nav__dropdown-heading {
    color: rgba(10, 13, 20, 0.45);
    padding: 0 12px;
    margin-bottom: 6px;
  }
  .nav .nav__dropdown-link {
    padding: 9px 12px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--bar-ink);
  }
  .nav .nav__dropdown-link:hover,
  .nav .nav__dropdown-link:focus-visible {
    color: var(--blue-cta, #1A56FF);
    background: rgba(26, 86, 255, 0.06);
  }
  .nav .nav__dropdown-group { padding: 0 8px; }
  .nav .nav__dropdown-group + .nav__dropdown-group { border-left: 1px solid var(--bar-line); }
}

/* ── Mobile: menu opens as a second white slab under the bar ── */
@media (max-width: 1023px) {
  .nav .nav__inner { padding-left: 16px; }
  .nav .nav__cta { display: block; margin-left: auto; }
  .nav .nav__cta .btn { padding: 0 16px; }

  .nav.nav--open .nav__links {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--bar-h) - 3 * var(--bar-inset) - 8px);
    overflow-y: auto;
    padding: 8px 0;
    margin: 0;
    background: #fff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 0;
    border-radius: var(--bar-radius);
    box-shadow: var(--bar-shadow);
  }
  .nav.nav--open .nav__links .nav__link,
  .nav.nav--open .nav__item--has-dropdown .nav__link {
    padding: 14px 20px;
    font-size: 16px;
    color: var(--bar-ink);
    border-bottom: 1px solid var(--bar-line);
  }
  .nav.nav--open .nav__links .nav__link::before { display: none; }
  .nav.nav--open .nav__links > .nav__link:last-child { border-bottom: 0; }
  .nav.nav--open .nav__dropdown { background: transparent; box-shadow: none; }
  .nav.nav--open .nav__dropdown-heading { color: rgba(10, 13, 20, 0.45); padding: 12px 36px 2px; }
  .nav.nav--open .nav__dropdown-link {
    padding: 12px 36px;
    color: var(--bar-muted);
    border-bottom: 1px solid var(--bar-line);
  }
  .nav.nav--open .nav__dropdown-link:hover { color: var(--bar-ink); background: rgba(10, 13, 20, 0.03); }
}
@media (max-width: 420px) {
  .nav .nav__cta { display: none; }
  .nav .nav__burger { margin-left: auto; }
}