/* ========================================
   NAVIGATION — Mobile-First
   ======================================== */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-5);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--white);
  transition: background var(--transition-base), box-shadow var(--transition-base), padding var(--transition-base);
}

#nav.scrolled {
  box-shadow: 0 1px 0 rgba(28, 49, 99, 0.08);
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo-icon {
  height: 36px;
  width: auto;
}

.logo-text {
  font-family: 'Libre Baskerville', serif;
  font-size: var(--text-base);
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--navy-deep);
}

.logo-text span {
  display: block;
  font-size: 0.5625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-top: 2px;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: var(--touch-target);
  height: var(--touch-target);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--navy-deep);
  transition: transform var(--transition-base), opacity var(--transition-base);
  margin: 3px 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation Panel */
.nav-links {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  height: 100dvh;
  background: var(--white);
  display: flex;
  flex-direction: column;
  padding: 6rem var(--space-8) var(--space-8);
  gap: 0;
  transition: right var(--transition-slow);
  box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
  overflow-y: auto;
}

.nav-links[data-visible="true"] {
  right: 0;
}

.nav-links a:not(.nav-cta) {
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--navy-deep);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--gold-light);
  min-height: var(--touch-target);
  display: flex;
  align-items: center;
}

/* Active page state */
.nav-links a.active:not(.nav-cta) {
  color: var(--gold);
}

.nav-links .nav-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-6);
  color: var(--white);
  background: var(--navy-deep);
  padding: var(--space-4) var(--space-8);
  border: none;
  text-decoration: none;
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  min-height: var(--touch-target);
  transition: background var(--transition-base);
}

.nav-links .nav-cta:hover,
.nav-links .nav-cta:focus {
  background: var(--navy-black);
}

/* Mobile Overlay */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 7, 27, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
  z-index: 99;
}

.nav-overlay[data-visible="true"] {
  opacity: 1;
  visibility: visible;
}

/* ========================================
   TABLET (768px+)
   ======================================== */
@media (min-width: 768px) {
  #nav {
    padding: var(--space-6) var(--space-8);
  }

  .logo-icon {
    height: 40px;
  }
}

/* ========================================
   DESKTOP (1024px+) — Full horizontal nav
   ======================================== */
@media (min-width: 1024px) {
  /* Hide hamburger, show full nav */
  .menu-toggle {
    display: none;
  }

  .nav-overlay {
    display: none;
  }

  #nav {
    padding: var(--space-8) var(--space-16);
    background: var(--white);
  }

  #nav.scrolled {
    padding: var(--space-5) var(--space-16);
  }

  .nav-links {
    position: static;
    width: auto;
    height: auto;
    max-width: none;
    background: transparent;
    flex-direction: row;
    padding: 0;
    gap: var(--space-12);
    box-shadow: none;
    overflow: visible;
  }

  .nav-links a:not(.nav-cta) {
    font-size: var(--text-xs);
    letter-spacing: 0.15em;
    padding: var(--space-1) 0;
    border-bottom: none;
    min-height: auto;
    position: relative;
  }

  .nav-links a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gold-decorative);
    transition: width var(--transition-base);
  }

  .nav-links a:not(.nav-cta):hover::after,
  .nav-links a:not(.nav-cta):focus::after {
    width: 100%;
  }

  /* Active page: gold underline stays */
  .nav-links a.active:not(.nav-cta)::after {
    width: 100%;
  }

  .nav-links .nav-cta {
    margin-top: 0;
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--navy-deep);
    min-height: auto;
  }

  .nav-links .nav-cta:hover,
  .nav-links .nav-cta:focus {
    background: var(--navy-black);
    border-color: var(--navy-black);
  }

  .logo-icon {
    height: 45px;
  }

  .logo-text {
    font-size: var(--text-lg);
  }
}