/* ============================================================
   nav.css — AAI Child Theme Navigation
   Inherits design tokens from style.css (must load first)
   ============================================================ */

/* ── Skip link ─────────────────────────────────────────────── */

.aai-skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  background: var(--neutral-900);
  color: var(--neutral-0);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: top 0.15s;
}

.aai-skip-link:focus {
  top: var(--space-3);
}

/* ── Header shell ──────────────────────────────────────────── */

.aai-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 800;
  width: 100%;
  height: 68px;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition:
    box-shadow 0.3s ease,
    border-color 0.3s ease,
    background-color 0.3s ease;
}

/* Scrolled state — elevated look */
.aai-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.97);
  border-bottom-color: var(--neutral-200);
  box-shadow:
    0 1px 0 rgba(0,0,0,0.04),
    0 4px 24px rgba(0,0,0,0.07);
}

.aai-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ── Logo ──────────────────────────────────────────────────── */

.aai-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.aai-header__logo img {
  height: 40px;
  width: auto;
  display: block;
}

.aai-header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--neutral-900);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

/* ── Desktop nav ───────────────────────────────────────────── */

.aai-primary-nav {
  display: none;
}

@media (min-width: 960px) {
  .aai-primary-nav {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: flex-end;
  }
}

/* Nav list */
.aai-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ── Nav items ─────────────────────────────────────────────── */

.aai-nav__item {
  position: relative;
}

/* Nav links */
.aai-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--neutral-600);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
  transition:
    color 0.15s,
    background-color 0.15s;
}

.aai-nav__link:hover,
.aai-nav__item.is-open > .aai-nav__link,
.aai-nav__item.current-menu-item > .aai-nav__link,
.aai-nav__item.current-menu-ancestor > .aai-nav__link {
  color: var(--teal-700);
  background-color: var(--teal-50);
}

/* Active underline indicator */
.aai-nav__item.current-menu-item > .aai-nav__link::after {
  content: '';
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: var(--teal-500);
  border-radius: var(--radius-full);
}

/* CTA button — "Enquire Now" */
.aai-nav__link--cta {
  background-color: var(--teal-500);
  color: var(--neutral-0) !important;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  margin-left: var(--space-3);
  box-shadow: 0 2px 8px rgba(52, 157, 140, 0.28);
  transition:
    background-color 0.2s,
    transform 0.15s var(--ease-out),
    box-shadow 0.2s;
}

.aai-nav__link--cta:hover {
  background-color: var(--teal-600) !important;
  color: var(--neutral-0) !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(52, 157, 140, 0.36);
}

.aai-nav__link--cta:active {
  transform: translateY(0);
}

/* Chevron icon */
.aai-nav__chevron {
  display: inline-flex;
  align-items: center;
  color: currentColor;
  opacity: 0.55;
  transition: transform 0.25s var(--ease-out), opacity 0.15s;
}

.aai-nav__item.is-open > .aai-nav__link .aai-nav__chevron {
  transform: rotate(180deg);
  opacity: 0.85;
}

/* ── Dropdown panel ────────────────────────────────────────── */

.aai-dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 220px;
  list-style: none;
  margin: 0;
  padding: var(--space-2);
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  box-shadow:
    0 4px 6px rgba(0,0,0,0.04),
    0 12px 40px rgba(0,0,0,0.10);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.22s var(--ease-out),
    transform 0.22s var(--ease-out);
  /* Arrow pointer */
  z-index: 900;
}

/* Pseudo-element bridge — prevents gap between trigger & panel */
.aai-dropdown::before {
  content: '';
  position: absolute;
  top: -14px;
  left: 0;
  right: 0;
  height: 14px;
}

/* Small up-arrow caret */
.aai-dropdown::after {
  content: '';
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 10px;
  height: 10px;
  background: var(--neutral-0);
  border-left: 1px solid var(--neutral-200);
  border-top: 1px solid var(--neutral-200);
  border-radius: 2px 0 0 0;
}

/* Open state */
.aai-nav__item.is-open > .aai-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* Dropdown items */
.aai-dropdown li {
  list-style: none;
  margin: 0;
}

.aai-dropdown a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--neutral-700);
  text-decoration: none;
  transition:
    background-color 0.12s,
    color 0.12s;
}

.aai-dropdown a::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--teal-300);
  flex-shrink: 0;
  transition: background-color 0.12s, transform 0.15s;
}

.aai-dropdown a:hover {
  background-color: var(--teal-50);
  color: var(--teal-700);
}

.aai-dropdown a:hover::before {
  background-color: var(--teal-500);
  transform: scale(1.4);
}

.aai-dropdown li.current-menu-item > a {
  background-color: var(--teal-50);
  color: var(--teal-700);
  font-weight: 500;
}

/* ── Hamburger button ──────────────────────────────────────── */

.aai-burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  background: transparent;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-md);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color 0.15s, border-color 0.15s;
}

.aai-burger:hover {
  background-color: var(--neutral-100);
  border-color: var(--neutral-400);
}

@media (min-width: 960px) {
  .aai-burger {
    display: none;
  }
}

/* Burger bars */
.aai-burger__bar {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--neutral-700);
  border-radius: var(--radius-full);
  transform-origin: center;
  transition:
    transform 0.3s var(--ease-out),
    opacity   0.2s,
    width     0.2s;
}

/* Animated X state */
.aai-burger[aria-expanded="true"] .aai-burger__bar--top {
  transform: translateY(6.5px) rotate(45deg);
}

.aai-burger[aria-expanded="true"] .aai-burger__bar--middle {
  opacity: 0;
  width: 0;
}

.aai-burger[aria-expanded="true"] .aai-burger__bar--bottom {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile navigation drawer ──────────────────────────────── */

.aai-mobile-nav {
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  z-index: 790;
  background: var(--neutral-0);
  border-bottom: 1px solid var(--neutral-200);
  overflow-y: auto;
  max-height: calc(100dvh - 68px);
  /* Hidden state */
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition:
    transform 0.3s var(--ease-out),
    opacity   0.25s var(--ease-out),
    visibility 0s linear 0.3s;
}

.aai-mobile-nav.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
  transition:
    transform 0.3s var(--ease-out),
    opacity   0.25s var(--ease-out),
    visibility 0s linear 0s;
}

@media (min-width: 960px) {
  .aai-mobile-nav {
    display: none;
  }
}

.aai-mobile-nav__inner {
  padding: var(--space-4) var(--gutter) var(--space-6);
}

/* Mobile nav list */
.aai-mobile-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.aai-mobile-nav__list .aai-nav__item {
  border-bottom: 1px solid var(--neutral-100);
}

.aai-mobile-nav__list .aai-nav__item:last-child {
  border-bottom: none;
}

.aai-mobile-nav__list .aai-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-4) var(--space-2);
  font-size: var(--text-base);
  color: var(--neutral-800);
  border-radius: 0;
  background: transparent;
}

.aai-mobile-nav__list .aai-nav__link:hover {
  color: var(--teal-700);
  background: transparent;
}

.aai-mobile-nav__list .aai-nav__link--cta {
  display: none; /* CTA shown separately in footer block */
}

/* Mobile chevron */
.aai-mobile-nav__list .aai-nav__chevron {
  transition: transform 0.25s var(--ease-out);
}

.aai-mobile-nav__list .has-dropdown.is-open > .aai-nav__link .aai-nav__chevron {
  transform: rotate(180deg);
}

/* Mobile dropdown — accordion */
.aai-mobile-nav__list .aai-dropdown {
  position: static;
  transform: none;
  opacity: 1;
  pointer-events: auto;
  box-shadow: none;
  border: none;
  border-radius: 0;
  background: var(--neutral-50);
  padding: var(--space-1) 0 var(--space-2) var(--space-4);
  /* Hidden via grid trick */
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s var(--ease-out);
  overflow: hidden;
}

.aai-mobile-nav__list .aai-dropdown::before,
.aai-mobile-nav__list .aai-dropdown::after {
  display: none;
}

.aai-mobile-nav__list .has-dropdown.is-open > .aai-dropdown {
  grid-template-rows: 1fr;
}

/* Inner wrapper needed for grid trick */
.aai-mobile-nav__list .aai-dropdown li:first-child {
  overflow: hidden;
}

.aai-mobile-nav__list .aai-dropdown li {
  list-style: none;
}

.aai-mobile-nav__list .aai-dropdown a {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  color: var(--neutral-600);
}

.aai-mobile-nav__list .aai-dropdown a:hover {
  background-color: var(--teal-50);
  color: var(--teal-700);
}

/* Mobile CTA footer */
.aai-mobile-nav__footer {
  padding-top: var(--space-5);
  margin-top: var(--space-2);
  border-top: 1px solid var(--neutral-100);
}

.aai-mobile-nav__footer .aai-btn-primary {
  width: 100%;
  justify-content: center;
}

/* ── Overlay behind mobile drawer ──────────────────────────── */

.aai-nav-overlay {
  position: fixed;
  inset: 68px 0 0 0;
  z-index: 780;
  background: rgba(20, 25, 24, 0.35);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.aai-nav-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── Spacing compensation for sticky header ────────────────── */

/* If your theme doesn't already account for this, add:
   html { scroll-padding-top: 68px; }
   below and adjust anchor-link scrolling. */

html {
  scroll-padding-top: 68px;
}