/* ═══════════════════════════════════════════════════
nav.css — Navigation
═══════════════════════════════════════════════════ */

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.6rem 3rem;
  transition:
    background var(--slow) var(--ease),
    padding var(--med) var(--ease),
    box-shadow var(--slow) var(--ease);
  background: linear-gradient(to bottom, rgba(20, 12, 4, .65) 0%, transparent 100%);
}

.nav.scrolled {
  background: rgba(250, 246, 239, .96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 1rem 3rem;
  box-shadow: 0 1px 0 rgba(165, 145, 115, .18), var(--sh-sm);
}

/* logo */
.nav-logo {
  display: flex;
  flex-direction: column;
  line-height: 1;
  gap: 3px;
}

.nav-logo-en {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: #f5ede0;
  transition: color var(--med) var(--ease);
}

.nav-logo-kh {
  font-size: 0.74rem;
  font-weight: 300;
  color: rgba(245, 237, 224, .55);
  letter-spacing: 0.02em;
  transition: color var(--med) var(--ease);
}

.nav.scrolled .nav-logo-en {
  color: var(--teak);
}

.nav.scrolled .nav-logo-kh {
  color: var(--stone);
}

/* links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.nav-link {
  position: relative;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(245, 237, 224, .6);
  transition: color var(--fast) var(--ease);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--saffron-lt);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--med) var(--ease);
}

.nav-link:hover {
  color: #f5ede0;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link.active {
  color: #f5ede0;
}

.nav.scrolled .nav-link {
  color: var(--teak-warm);
}

.nav.scrolled .nav-link:hover {
  color: var(--teak);
}

.nav.scrolled .nav-link.active {
  color: var(--teak);
}

.nav.scrolled .nav-link::after {
  background: var(--saffron);
}

/* CTA pill */
.nav-cta {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(245, 237, 224, .8);
  border: 1.5px solid rgba(245, 237, 224, .28);
  padding: 0.55rem 1.5rem;
  border-radius: var(--r-pill);
  transition: all var(--fast) var(--ease);
}

.nav-cta:hover {
  background: var(--saffron);
  color: white;
  border-color: var(--saffron);
}

.nav.scrolled .nav-cta {
  color: var(--saffron-deep);
  border-color: var(--saffron-lt);
}

.nav.scrolled .nav-cta:hover {
  background: var(--saffron);
  color: white;
  border-color: var(--saffron);
}

/* hamburger */
.nav-ham {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 4px;
}

.nav-ham span {
  display: block;
  width: 26px;
  height: 1.5px;
  background: #f5ede0;
  border-radius: 2px;
  transition: all var(--med) var(--ease);
  transform-origin: center;
}

.nav.scrolled .nav-ham span {
  background: var(--teak);
}

.nav-ham.open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav-ham.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-ham.open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* mobile drawer */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 199;
  background: var(--cream);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  transform: translateX(100%);
  transition: transform var(--slow) var(--ease);
}

.nav-drawer.open {
  transform: none;
}

.nav-drawer .nav-link {
  font-size: 1.6rem;
  font-weight: 200;
  letter-spacing: 0.12em;
  color: var(--teak-warm);
  opacity: 0.85;
}

.nav-drawer-icon {
  font-size: 2.5rem;
  opacity: 0.4;
  margin-bottom: 0.5rem;
}

@media (max-width: 900px) {
  .nav {
    padding: 1.2rem 1.5rem;
  }

  .nav.scrolled {
    padding: 0.9rem 1.5rem;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-ham {
    display: flex;
  }
}