/* nav.css — Sticky Navigation */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: transparent;
  backdrop-filter: blur(0px);
  transition: background var(--t-base) var(--ease), backdrop-filter var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}
.site-nav.scrolled {
  background: rgba(248,247,244,0.96);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-nav);
}

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: var(--sp-4);
}

/* ── Logo ── */
.logo {
  display: flex; flex-direction: column;
  line-height: 1; text-decoration: none; gap: 3px; flex-shrink: 0;
}
.logo-zenith {
  font-family: var(--font-display); font-size: 18px; font-weight: 800;
  letter-spacing: 0.02em; color: var(--navy);
  transition: color var(--t-fast) var(--ease);
}
.logo-agency {
  font-family: var(--font-body); font-size: 9px; font-weight: 600;
  letter-spacing: 0.22em; color: var(--gold); text-transform: uppercase;
}
.site-nav:not(.scrolled) .logo-zenith { color: #ffffff; }

/* ── Nav Links ── */
.nav-links { display: none; align-items: center; gap: var(--sp-4); }
@media (min-width: 900px) { .nav-links { display: flex; } }

.nav-links a {
  font-family: var(--font-body); font-size: 14px; font-weight: 500;
  color: var(--text-2); text-decoration: none;
  transition: color var(--t-fast) var(--ease);
  position: relative; padding-bottom: 2px;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 100%;
  height: 1.5px; background: var(--gold);
  transition: right var(--t-base) var(--ease);
}
.nav-links a:hover { color: var(--text-1); }
.nav-links a:hover::after { right: 0; }
.site-nav:not(.scrolled) .nav-links a { color: rgba(255,255,255,0.7); }
.site-nav:not(.scrolled) .nav-links a:hover { color: #fff; }

/* ── CTA ── */
.nav-cta { display: none; }
@media (min-width: 900px) { .nav-cta { display: inline-flex; } }

/* ── Toggle ── */
.nav-toggle {
  display: flex; flex-direction: column; gap: 5px;
  padding: 8px; cursor: pointer; background: none; border: none;
}
@media (min-width: 900px) { .nav-toggle { display: none; } }

.nav-toggle span {
  display: block; width: 22px; height: 1.5px;
  background: var(--text-1); border-radius: 2px;
  transition: transform var(--t-base) var(--ease), opacity var(--t-base) var(--ease);
}
.site-nav:not(.scrolled) .nav-toggle span { background: #ffffff; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Mobile Drawer ── */
.nav-drawer {
  position: fixed; inset: 0; background: var(--bg); z-index: 99;
  display: flex; flex-direction: column; justify-content: center; align-items: center;
  opacity: 0; pointer-events: none;
  transform: translateX(100%);
  transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}
.nav-drawer.is-open { opacity: 1; pointer-events: all; transform: none; }

.drawer-links {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--sp-4); text-align: center;
}
.drawer-links a {
  font-family: var(--font-display); font-size: var(--text-3xl);
  font-weight: 700; color: var(--text-1); text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}
.drawer-links a:hover { color: var(--navy); }
.drawer-links .btn { margin-top: var(--sp-2); font-size: var(--text-base); }