/* TRSB — Navigation */

nav#sitenav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 48px;
  height: 80px; display: flex; align-items: center;
  justify-content: space-between;
}

/* ── Logo ── */
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; flex-shrink: 0;
}
.nav-logo img { height: 45px; display: block; }

/* ── Desktop links ── */
.nav-links { display: flex; align-items: center; gap: 0; }
.nav-links a {
  font-family: var(--sans); font-size: 0.8rem; font-weight: 500;
  color: var(--ink3); padding: 8px 14px;
  transition: color 0.15s; white-space: nowrap; text-decoration: none;
}
.nav-links a:hover { color: var(--ink); }
.nav-cta {
  background: var(--ink) !important; color: var(--white) !important;
  border-radius: 4px; margin-left: 8px; padding: 7px 16px !important;
  transition: background 0.15s !important;
}
.nav-cta:hover { background: var(--accent) !important; }

/* ── Hamburger button (hidden on desktop) ── */
.nav-burger {
  display: none; flex-direction: column; justify-content: center;
  gap: 5px; width: 36px; height: 36px;
  background: none; border: none; cursor: pointer;
  padding: 4px; border-radius: 4px; transition: background 0.15s;
}
.nav-burger:hover { background: var(--pale); }
.nav-burger span {
  display: block; width: 22px; height: 2px;
  background: var(--ink); border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile drawer ── */
.nav-drawer {
  display: none;
  position: absolute; top: 60px; left: 0; right: 0;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(13,26,43,0.10);
  padding: 8px 0 16px;
  animation: drawerSlide 0.2s ease;
}
@keyframes drawerSlide {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.nav-drawer.open { display: block; }
.nav-drawer a {
  display: block; font-family: var(--sans); font-size: 0.92rem; font-weight: 500;
  color: var(--ink2); padding: 13px 24px; text-decoration: none;
  border-bottom: 1px solid var(--bord2); transition: background 0.1s, color 0.1s;
}
.nav-drawer a:last-child { border-bottom: none; }
.nav-drawer a:hover { background: var(--pale); color: var(--accent); }
.nav-drawer .drawer-cta {
  margin: 12px 24px 0; display: block; text-align: center;
  background: var(--ink); color: #fff !important;
  border-radius: 4px; padding: 12px 24px !important; border-bottom: none !important;
}
.nav-drawer .drawer-cta:hover { background: var(--accent) !important; }

/* ── Collapse to burger at 768px ── */
@media (max-width: 768px) {
  .nav-inner { padding: 0 20px; }
  .nav-links  { display: none; }
  .nav-burger { display: flex; }
}