/* ================================================================
   NAV
   ================================================================ */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  transition: background 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
}
#nav.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo-img { height: 56px; width: auto; transition: height 300ms var(--ease-out); filter: brightness(0) invert(1); }
#nav.scrolled .nav-logo-img { height: 40px; filter: none; }

.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-link {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  position: relative;
  padding-bottom: 4px;
  transition: color 200ms ease;
}
#nav.scrolled .nav-link { color: var(--body); }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--olive);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--ease-out);
}
.nav-link:hover,
.nav-link.active { color: var(--olive); }
.nav-link.active::after { transform: scaleX(1); }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  position: relative;
  z-index: 1010;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: transform 300ms var(--ease-out), opacity 300ms ease;
  transform-origin: center;
}
#nav.scrolled .nav-hamburger span { background: var(--charcoal); }
.nav-hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Mobile drawer */
.nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--charcoal);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 400ms var(--ease-out), opacity 400ms var(--ease-out);
  pointer-events: none;
}
.nav-drawer.open { transform: translateY(0); opacity: 1; pointer-events: all; }
.nav-drawer a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 36px;
  color: white;
  text-decoration: none;
  opacity: 0;
  transform: translateY(20px);
  transition: color 200ms ease, opacity 400ms var(--ease-out), transform 400ms var(--ease-out);
}
.nav-drawer.open a { opacity: 1; transform: translateY(0); }
.nav-drawer.open a:nth-child(1) { transition-delay: 50ms; }
.nav-drawer.open a:nth-child(2) { transition-delay: 130ms; }
.nav-drawer.open a:nth-child(3) { transition-delay: 210ms; }
.nav-drawer.open a:nth-child(4) { transition-delay: 290ms; }
.nav-drawer.open a:nth-child(5) { transition-delay: 370ms; }
.nav-drawer a:hover { color: var(--olive); }

/* Dropdown */
.nav-item { position: relative; }
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: white;
  border-radius: 6px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.14);
  min-width: 200px;
  padding: 8px 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease, transform 200ms ease;
  z-index: 1001;
}
.nav-item:hover .nav-dropdown { opacity: 1; pointer-events: all; transform: translateX(-50%) translateY(0); }
.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -6px; left: 50%;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid white;
}
.nav-dropdown-link {
  display: block;
  padding: 10px 20px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  color: var(--body);
  text-decoration: none;
  white-space: nowrap;
  transition: color 200ms ease, background 200ms ease;
}
.nav-dropdown-link:hover { color: var(--olive); background: var(--olive-wash); }

/* Responsive */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-inner { padding: 0 20px; }
}