/* ============================================================
   BBN CATERERS — NAVIGATION (Brand-Aligned)
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: all 0.4s ease;
}

/* Transparent state over hero */
.nav--transparent {
  background: transparent;
}

/* Scrolled state */
.nav--scrolled {
  background: rgba(28, 26, 23, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(137,120,92,0.18);
  height: 76px; /* Compact height on scroll */
}

.nav__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

/* ─── Logo ─── */
.nav__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: var(--space-3);
}

.nav__logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);  /* White logo on dark nav */
  transition: filter var(--transition-base), height 0.4s ease;
}

.nav--scrolled .nav__logo-img {
  filter: brightness(0) invert(1); /* Stays white on dark scrolled */
  height: 34px; /* Shrunk logo height on scroll */
}

/* ─── Desktop Links ─── */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  align-self: stretch;
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(243,239,232,0.78);
  position: relative;
  padding-bottom: 3px;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-beige-light);
  transition: width var(--transition-base);
}

.nav__link:hover {
  color: var(--color-cream);
}

.nav__link:hover::after {
  width: 100%;
}

/* ─── Nav CTA ─── */
.nav__cta {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 10px 22px;
  border: 1px solid rgba(184,173,155,0.50);
  color: var(--color-cream);
  background: transparent;
  transition: all var(--transition-base);
  cursor: pointer;
}
.nav__cta:hover {
  background: var(--color-taupe);
  border-color: var(--color-taupe);
}

/* ─── Animated CTA Hover / Alternate Flip ─── */
.nav__cta--animate {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 38px;
  min-width: 185px;
  padding: 0 var(--space-4) !important;
}

.nav__mobile-cta--animate {
  position: relative;
  overflow: hidden;
  display: block;
  height: 48px;
  padding: 0 var(--space-8) !important;
  margin-top: var(--space-6);
  background: var(--color-taupe);
  border: none;
  cursor: pointer;
}

.nav__cta-inner {
  position: relative;
  height: 100%;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.nav__cta-text {
  display: block;
  width: 100%;
  text-align: center;
  backface-visibility: hidden;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav__cta--animate .nav__cta-text {
  line-height: 36px;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  color: var(--color-cream);
}

.nav__mobile-cta--animate .nav__cta-text {
  line-height: 48px;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  color: var(--color-cream);
}

.nav__cta-text--default {
  animation: ctaDefaultSwap 8s infinite ease-in-out;
}

.nav__cta-text--hover {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  opacity: 0;
  transform: translateY(8px);
  animation: ctaHoverSwap 8s infinite ease-in-out;
}

/* Animations on Hover: pause alternating animation and force hover state */
.nav__cta--animate:hover .nav__cta-text--default,
.nav__mobile-cta--animate:hover .nav__cta-text--default {
  animation-play-state: paused;
  transform: translateY(-100%);
  opacity: 0;
}

.nav__cta--animate:hover .nav__cta-text--hover,
.nav__mobile-cta--animate:hover .nav__cta-text--hover {
  animation-play-state: paused;
  transform: translateY(-100%);
  opacity: 1;
}

@keyframes ctaDefaultSwap {
  0%, 40% {
    transform: translateY(0);
    opacity: 1;
  }
  46%, 90% {
    transform: translateY(-100%);
    opacity: 0;
  }
  96%, 100% {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes ctaHoverSwap {
  0%, 40% {
    transform: translateY(8px);
    opacity: 0;
  }
  46%, 90% {
    transform: translateY(-100%);
    opacity: 1;
  }
  96%, 100% {
    transform: translateY(8px);
    opacity: 0;
  }
}


/* ─── Hamburger ─── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-cream);
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Mobile Menu ─── */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(28, 26, 23, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-8) var(--space-6) var(--space-10);
  flex-direction: column;
  gap: 0;
  z-index: 999;
  border-bottom: 1px solid rgba(137,120,92,0.20);
  transition: top 0.4s ease;
}

.nav--scrolled .nav__mobile {
  top: 76px; /* Offset mobile menu correctly when header is compacted */
}

.nav__mobile.is-open {
  display: flex;
}

.nav__mobile-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(243,239,232,0.75);
  padding: var(--space-4) 0;
  border-bottom: 1px solid rgba(137,120,92,0.15);
  transition: color var(--transition-fast);
}
.nav__mobile-link:hover { color: var(--color-cream); }

.nav__mobile-cta {
  margin-top: var(--space-6);
  padding: 14px var(--space-8);
  background: var(--color-taupe);
  color: var(--color-cream);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: center;
  cursor: pointer;
}

/* ─── Services Mega Menu & Dropdown (Desktop) ─── */
.nav__dropdown {
  position: inline-flex;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav__dropdown-trigger {
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 0 3px 0;
  outline: none;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(243,239,232,0.78);
  transition: color var(--transition-fast);
}

.nav__dropdown-trigger::after {
  display: none !important; /* Disable standard underline on trigger */
}

.nav__dropdown:hover .nav__dropdown-trigger {
  color: var(--color-cream);
}

.nav__dropdown-arrow {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
  transition: transform var(--transition-base);
  opacity: 0.7;
}

.nav__dropdown:hover .nav__dropdown-arrow {
  transform: rotate(-135deg) translateY(-1px);
}

.nav__mega-menu {
  position: absolute;
  top: 100%;
  left: var(--space-8);
  right: var(--space-8);
  background: var(--color-cream-light);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid var(--color-border);
  border-top: 2px solid var(--color-taupe); /* Elegant divider line */
  box-shadow: var(--shadow-xl);
  padding: var(--space-8) var(--space-10);
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  z-index: 1001;
  pointer-events: none;
}

.nav__dropdown:hover .nav__mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.nav__mega-grid {
  display: grid;
  grid-template-columns: 280px 1fr 1fr;
  gap: var(--space-10);
  align-items: stretch;
}

.nav__mega-showcase {
  background: rgba(137, 120, 92, 0.06);
  border: 1px solid rgba(137, 120, 92, 0.15);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
}

.nav__mega-showcase::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-taupe);
}

.nav__mega-showcase-title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--fw-semibold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.nav__mega-showcase-desc {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.nav__mega-showcase-logo {
  margin-top: var(--space-4);
  opacity: 0.35; /* Fades logo to watermark level */
  align-self: flex-end;
  /* Dark logo is visible on cream background — no invert filter needed */
}

.nav__mega-col-title {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-taupe);
  margin-bottom: var(--space-4);
  display: block;
  border-bottom: 1px solid rgba(137, 120, 92, 0.15);
  padding-bottom: var(--space-2);
}

.nav__mega-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav__mega-link {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-fast);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

.nav__mega-link:hover {
  background: rgba(137, 120, 92, 0.10);
  color: var(--color-dark);
  transform: translateX(4px);
}

.nav__mega-icon {
  color: var(--color-taupe);
  flex-shrink: 0;
  margin-top: 2px;
  transition: color var(--transition-fast);
}

.nav__mega-link:hover .nav__mega-icon {
  color: var(--color-taupe-dark);
}

.nav__mega-info {
  display: flex;
  flex-direction: column;
}

.nav__mega-name {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.nav__mega-desc {
  font-family: var(--font-body);
  font-size: 0.65rem;
  color: var(--color-text-muted);
  margin-top: 3px;
  line-height: 1.3;
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__hamburger { display: flex; }

  /* Mobile Accordion Styles */
  .nav__mobile-dropdown {
    width: 100%;
  }

  .nav__mobile-dropdown-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    border-bottom: 1px solid rgba(137,120,92,0.15);
    text-align: left;
    cursor: pointer;
  }

  .nav__mobile-arrow {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: rotate(45deg);
    transition: transform var(--transition-base);
    margin-right: var(--space-2);
  }

  .nav__mobile-dropdown-trigger.is-active .nav__mobile-arrow {
    transform: rotate(-135deg);
  }

  .nav__mobile-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    background: rgba(28, 26, 23, 0.3);
    padding-left: var(--space-4);
  }

  .nav__mobile-submenu.is-open {
    max-height: 350px;
  }

  .nav__mobile-sublink {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: var(--fw-medium);
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: rgba(243,239,232,0.65);
    padding: var(--space-3) 0;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transition: color var(--transition-fast);
    border-bottom: 1px solid rgba(137,120,92,0.08);
  }

  .nav__mobile-sublink:last-child {
    border-bottom: none;
  }

  .nav__mobile-sublink:hover {
    color: var(--color-cream);
  }
}