/* Top navigation — Apple-style sticky with blur-morph + mega menu */
.nav-shell {
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background 0.4s var(--ease), backdrop-filter 0.4s var(--ease), border-color 0.4s var(--ease), margin-bottom 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav-shell.scrolled {
  background: oklch(0.975 0.012 78 / 0.78);
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  border-bottom-color: var(--line-soft);
}
.nav-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  height: 72px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  height: 44px;
}
.nav-logo-img {
  height: 100%;
  width: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(20, 25, 60, 0.08), 0 4px 12px rgba(20, 25, 60, 0.06);
}
/* Homepage, top of page: the logo fills the open space above the hero tagline
   (Greg's request, 10-16 call), then shrinks back once the visitor scrolls. */
.nav-logo { transition: height 0.35s var(--ease), margin 0.35s var(--ease); }
.nav-inner { transition: height 0.35s var(--ease); }
@media (min-width: 1000px) {
  .nav-shell.home:not(.scrolled) .nav-logo {
    height: 64px;
  }
  .nav-shell.home:not(.scrolled) .nav-logo-img { border-radius: 10px; }
}
/* Wide screens: Greg asked (10-17) for the logo to fill nearly all of the
   upper-left space. The taller header is pulled back with a negative margin
   so the hero below doesn't move, and nothing jumps when it shrinks on scroll. */
@media (min-width: 1200px) {
  .nav-shell.home:not(.scrolled) { margin-bottom: -54px; }
  .nav-shell.home:not(.scrolled) .nav-inner { height: 126px; }
  .nav-shell.home:not(.scrolled) .nav-logo { height: 110px; }
  .nav-shell.home:not(.scrolled) .nav-logo-img { border-radius: 14px; }
}
@media (max-width: 720px) {
  .nav-logo { height: 36px; }
  .nav-logo-img { border-radius: 6px; }
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.nav-link {
  position: relative;
  padding: 10px 14px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-soft);
  border-radius: var(--r-pill);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.nav-link:hover, .nav-link.active { color: var(--ink); }
.nav-link .chev { width: 9px; height: 9px; opacity: 0.6; transition: transform 0.25s var(--ease); }
.nav-link[aria-expanded="true"] .chev { transform: rotate(180deg); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-search {
  width: 36px; height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav-search:hover { background: var(--bg-elev); border-color: var(--ink); }
.nav-give {
  padding: 9px 18px;
  font-size: 14px;
}
.nav-subscribe {
  padding: 8px 16px;
  font-size: 14px;
}
@media (max-width: 480px) {
  .nav-subscribe { display: none; }  /* in the burger drawer instead */
}

/* Mega menu */
.mega {
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line-soft);
  box-shadow: var(--shadow-2);
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.mega.open { opacity: 1; transform: none; pointer-events: auto; }
.mega-grid {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 36px var(--gutter) 44px;
  display: grid;
  grid-template-columns: 1.1fr 1fr 1fr 1.1fr;
  gap: 40px;
}
.mega-col h6 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0 0 14px;
  font-weight: 500;
}
.mega-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.mega-col a {
  display: block;
  padding: 4px 0;
  font-size: 17px;
  color: var(--ink);
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  position: relative;
  transition: color 0.2s var(--ease), padding 0.25s var(--ease);
}
.mega-col a:hover { color: var(--wine); padding-left: 8px; }

.mega-feature {
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--r-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 200px;
  position: relative;
  overflow: hidden;
}
.mega-feature .eyebrow { color: var(--gold); }
.mega-feature h3 {
  font-family: var(--font-display);
  font-size: 26px;
  margin: 8px 0 12px;
  font-weight: 400;
  letter-spacing: -0.015em;
}

/* Mobile menu */
.nav-burger {
  display: none;
  width: 44px; height: 44px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
}
.nav-burger span {
  width: 16px; height: 1.5px; background: var(--ink);
  position: relative;
  transition: transform 0.3s var(--ease);
}
.nav-burger span::before, .nav-burger span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: var(--ink);
  transition: transform 0.3s var(--ease), top 0.3s var(--ease);
}
.nav-burger span::before { top: -5px; }
.nav-burger span::after { top: 5px; }

@media (max-width: 1020px) {
  .nav-links, .nav-search { display: none; }
  /* Desktop mega-menus are never opened below this width, but while hidden
     they still lay out at full width and added ~50px of horizontal scroll on
     phones. The burger drawer replaces them here. */
  .mega { display: none; }
  .nav-burger { display: inline-flex; }
  .nav-inner { grid-template-columns: auto 1fr auto; }
}

.mobile-drawer {
  position: fixed;
  inset: 72px 0 0 0;
  background: var(--bg);
  z-index: 90;
  padding: 24px var(--gutter) 80px;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease), visibility 0s linear 0.4s;
  overflow-y: auto;
  visibility: hidden;
}
.mobile-drawer.open { transform: none; visibility: visible; transition: transform 0.4s var(--ease); }
.mobile-drawer h6 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 20px 0 10px;
}
.mobile-drawer a {
  display: block;
  padding: 14px 0;
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: -0.015em;
  border-bottom: 1px solid var(--line-soft);
}