/* Floating glass nav: shared styles */
:root {
  --nav-bg: rgba(255,255,255,0.65);
  --nav-border: rgba(0,0,0,0.08);
  --nav-ink: #111;
}

.nav-wrap {
  position: sticky;
  top: 16px;
  display: flex;
  justify-content: center;
  padding: 0 16px;
  z-index: 20;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  border-radius: 999px;
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  box-shadow:
    0 2px 8px rgba(0,0,0,0.08),
    0 12px 30px rgba(0,0,0,0.10);
  max-width: min(100%, 920px);
  width: auto;
}

.brand {
  font-weight: 700;
  padding: 8px 12px;
  letter-spacing: 0.02em;
  color: #1f2937;
  white-space: nowrap;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
}

.nav-list a {
  position: relative;
  display: inline-block;
  padding: 8px 12px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  color: var(--nav-ink);
  opacity: 0.9;
  transition: opacity 180ms ease;
}
.nav-list a:hover { opacity: 1; }

.nav-list a::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 6px;
  height: 2px; background: var(--nav-ink);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 200ms ease-in-out;
  opacity: 0.85;
}
.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

/* Mobile (hamburger + drawer) */
.hamburger {
  display: none;
  margin-left: auto;
  border: 0;
  background: transparent;
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
}
.hamburger-box { width: 22px; height: 16px; position: relative; }
.hamburger-line {
  position: absolute; left: 0; right: 0; height: 2px; background: var(--nav-ink);
  border-radius: 999px;
  transition: transform 200ms ease, opacity 200ms ease;
}
.hamburger-line:nth-child(1) { top: 0; }
.hamburger-line:nth-child(2) { top: 7px; }
.hamburger-line:nth-child(3) { top: 14px; }

.drawer {
  display: none;
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(86vw, 360px);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: -8px 0 30px rgba(0,0,0,0.18);
  padding: 76px 20px 24px;
  z-index: 30;
}
.drawer ul { list-style: none; padding: 0; margin: 0; }
.drawer a {
  display: block; padding: 14px 8px; font-weight: 700; color: var(--nav-ink); text-decoration: none;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.scrim {
  display: none;
  position: fixed; inset: 0; z-index: 25;
  background: rgba(0,0,0,0.28);
}

/* Open states */
.drawer.open { display: block; }
.scrim.open { display: block; }
.hamburger.open .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .hamburger-line:nth-child(2) { opacity: 0; }
.hamburger.open .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Responsive */
@media (max-width: 900px) { .brand { display: none; } }
@media (max-width: 760px) {
  .nav-list { display: none; }
  .hamburger { display: inline-flex; }
  .site-nav { padding: 8px 12px; }
}

/* Motion-reduction */
@media (prefers-reduced-motion: reduce) {
  .nav-list a::after, .hamburger-line { transition: none; }
}