/* =========================================================
   NAVIGATION.CSS — DESKTOP DROPDOWNS & MOBILE DRAWER
   ========================================================= */

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ---------------------------------------------------------
   Top-level Navigation Links
   --------------------------------------------------------- */
.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-charcoal);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  text-decoration: none;
}

.nav-link:hover,
.nav-item:hover > .nav-link,
.nav-link:focus-visible {
  color: var(--color-blue);
  background-color: var(--color-surface-soft);
}

.nav-link.is-active {
  color: var(--color-blue);
  font-weight: 600;
}

.nav-link.is-active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 14px;
  right: 14px;
  height: 2px;
  background-color: var(--color-yellow);
  border-radius: 2px;
}

/* Caret indicator */
.nav-caret {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-caret,
.nav-item.is-open .nav-caret {
  transform: rotate(-135deg) translateY(-2px);
}

/* ---------------------------------------------------------
   Dropdown Menus (Desktop)
   --------------------------------------------------------- */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-dropdown);
  padding: 10px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  z-index: 1100;
}

.nav-item:hover > .nav-dropdown,
.nav-item:focus-within > .nav-dropdown,
.nav-item.is-open > .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 20px;
  font-size: 0.92rem;
  color: var(--color-charcoal);
  transition: background-color var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}

.nav-dropdown-item a:hover,
.nav-dropdown-item a:focus-visible {
  background-color: var(--color-surface-soft);
  color: var(--color-blue);
  padding-left: 24px;
}

.nav-dropdown-item a.is-active {
  color: var(--color-blue);
  font-weight: 600;
  background-color: #f0f7fb;
}

/* ---------------------------------------------------------
   Mega Menu (Service Areas: Calgary & Edmonton)
   --------------------------------------------------------- */
.nav-dropdown--mega {
  min-width: 580px;
  padding: 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.mega-column {
  display: flex;
  flex-direction: column;
}

.mega-heading {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-bottom: 8px;
  margin-bottom: 8px;
  border-bottom: 2px solid var(--color-border-subtle);
}

.mega-heading--calgary {
  color: var(--color-orange);
  border-bottom-color: var(--color-yellow);
}

.mega-heading--edmonton {
  color: var(--color-blue);
  border-bottom-color: var(--color-blue);
}

.mega-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mega-list a {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--color-charcoal);
  transition: all var(--transition-fast);
}

.mega-list a:hover {
  background-color: var(--color-surface-soft);
  color: var(--color-blue);
  padding-left: 14px;
}

.mega-list a.is-active {
  color: var(--color-blue);
  font-weight: 600;
  background-color: #f0f7fb;
}

/* ---------------------------------------------------------
   Mobile Menu Toggle Button
   --------------------------------------------------------- */
.mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  color: var(--color-charcoal);
  transition: background-color var(--transition-fast);
}

.mobile-toggle:hover {
  background-color: var(--color-border);
}

.mobile-toggle-bars {
  position: relative;
  width: 20px;
  height: 14px;
}

.mobile-toggle-bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-charcoal);
  border-radius: 2px;
  transition: transform var(--transition-normal), top var(--transition-normal), opacity var(--transition-normal);
}

.mobile-toggle-bars span:nth-child(1) { top: 0; }
.mobile-toggle-bars span:nth-child(2) { top: 6px; }
.mobile-toggle-bars span:nth-child(3) { top: 12px; }

.mobile-toggle.is-active .mobile-toggle-bars span:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}
.mobile-toggle.is-active .mobile-toggle-bars span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.is-active .mobile-toggle-bars span:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

/* ---------------------------------------------------------
   Mobile Drawer & Backdrop
   --------------------------------------------------------- */
.mobile-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(37, 43, 51, 0.45);
  backdrop-filter: blur(4px);
  z-index: 1200;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.mobile-backdrop.is-active {
  display: block;
  opacity: 1;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 85%;
  max-width: 380px;
  height: 100vh;
  background-color: var(--color-white);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
  z-index: 1300;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.mobile-drawer.is-active {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  border-bottom: 1px solid var(--color-border);
}

.mobile-drawer-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-charcoal);
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
}

.mobile-drawer-content {
  padding: 16px;
  flex: 1 1 auto;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav-item {
  border-bottom: 1px solid var(--color-border-subtle);
}

.mobile-nav-link-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.mobile-nav-link {
  display: block;
  padding: 12px 8px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-charcoal);
  flex: 1 1 auto;
}

.mobile-sub-toggle {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
  color: var(--color-charcoal);
}

.mobile-sub-toggle::after {
  content: '+';
  font-size: 1.3rem;
  line-height: 1;
}

.mobile-nav-item.is-expanded .mobile-sub-toggle::after {
  content: '−';
}

.mobile-submenu {
  display: none;
  padding: 4px 0 12px 14px;
}

.mobile-nav-item.is-expanded .mobile-submenu {
  display: block;
}

.mobile-submenu a {
  display: block;
  padding: 8px 10px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.mobile-submenu a:hover,
.mobile-submenu a.is-active {
  color: var(--color-blue);
  font-weight: 500;
}

.mobile-drawer-footer {
  padding: 20px;
  border-top: 1px solid var(--color-border);
}