/* ══════════════════════════════════════════════
   nav.css — Mega-menus & mobile accordion
   Extends header.css; loaded on all pages via main.ejs
   ══════════════════════════════════════════════ */

/* ── Mega-menu (shared) ── */
.mega-menu--method,
.mega-menu--solutions {
  position: absolute;
  top: 100%;
  left: 0;
  transform: translateY(8px);
  background-color: var(--color-primary-dark);
  border-radius: var(--border-radius-lg, var(--border-radius));
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: var(--space-6) var(--space-8);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  z-index: var(--z-dropdown);
  margin-top: var(--space-2);
}

@media (prefers-reduced-motion: reduce) {
  .mega-menu--method,
  .mega-menu--solutions {
    transition: none;
  }
}

/* Show on hover/focus/js-open */
.nav-item--mega:hover > .mega-menu--method,
.nav-item--mega:hover > .mega-menu--solutions,
.nav-item--mega:focus-within > .mega-menu--method,
.nav-item--mega:focus-within > .mega-menu--solutions,
.nav-item--mega.nav-item--desktop-open > .mega-menu--method,
.nav-item--mega.nav-item--desktop-open > .mega-menu--solutions {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Grid layouts */
.mega-menu__grid {
  display: grid;
  gap: var(--space-6);
}
.mega-menu__grid--5 { grid-template-columns: repeat(5, 1fr); min-width: 840px; }
.mega-menu__grid--3 { grid-template-columns: repeat(3, 1fr); min-width: 600px; }

/* Column headings — colour-coded */
.mega-menu__heading {
  font-size: 0.7rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 var(--space-3) 0;
  padding: 0 var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.mega-menu__heading-bar {
  display: inline-block;
  width: 2px;
  height: 14px;
  border-radius: 1px;
  flex-shrink: 0;
}

.mega-menu__heading--blue  { color: var(--color-accent-blue); }
.mega-menu__heading--green { color: var(--color-accent-green); }
.mega-menu__heading--orange { color: var(--color-accent-orange); }
.mega-menu__heading--gold  { color: var(--color-accent-gold); }
.mega-menu__heading--navy  { color: rgba(255, 255, 255, 0.7); }

/* Links */
.mega-menu__link {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.mega-menu__link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-accent-orange);
}

/* Footer CTAs */
.mega-menu__footer {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-4);
  margin-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.mega-menu__footer-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-orange);
  transition: color var(--transition-fast);
}

.mega-menu__footer-link:hover {
  color: var(--color-accent-orange-dark);
}

/* ── Mobile menu ── */
.mobile-menu {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background-color: var(--color-primary-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  max-height: calc(100vh - 72px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  z-index: var(--z-dropdown);
}

.mobile-menu--open {
  display: block;
}

.mobile-menu__items {
  padding: var(--space-3) var(--space-4);
}

.mobile-menu__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-menu__item:last-child {
  border-bottom: none;
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) var(--space-3);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  text-align: left;
}

.mobile-menu__link:hover {
  color: var(--color-accent-orange);
}

.mobile-menu__chevron {
  width: 16px;
  height: 16px;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

@media (prefers-reduced-motion: reduce) {
  .mobile-menu__chevron {
    transition: none;
  }
}

.mobile-menu__item--expanded .mobile-menu__chevron {
  transform: rotate(180deg);
}

/* Accordion panel */
.mobile-menu__panel {
  padding: 0 var(--space-3) var(--space-3);
}

.mobile-menu__section {
  margin-bottom: var(--space-3);
}

.mobile-menu__section-heading {
  display: block;
  font-size: 0.7rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-2) 0;
  margin-bottom: var(--space-1);
}

.mobile-menu__section-heading--blue  { color: var(--color-accent-blue); }
.mobile-menu__section-heading--green { color: var(--color-accent-green); }
.mobile-menu__section-heading--orange { color: var(--color-accent-orange); }
.mobile-menu__section-heading--gold  { color: var(--color-accent-gold); }
.mobile-menu__section-heading--navy  { color: rgba(255, 255, 255, 0.6); }

.mobile-menu__sublink {
  display: block;
  padding: var(--space-2) var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.8);
  border-radius: var(--border-radius-sm);
  transition: color var(--transition-fast);
}

.mobile-menu__sublink:hover {
  color: var(--color-accent-orange);
}

.mobile-menu__section-footer {
  padding-top: var(--space-3);
  margin-top: var(--space-2);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.mobile-menu__footer-link {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-orange);
}

.mobile-menu__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4) var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ── Mobile header: CTA + hamburger cluster ── */
.header__mobile-right {
  display: none;
  align-items: center;
  gap: var(--space-2);
}

.header__mobile-cta {
  font-size: var(--font-size-xs, 0.75rem);
  padding: var(--space-1) var(--space-3);
  white-space: nowrap;
}

@media (max-width: 1024px) {
  .header__mobile-right {
    display: flex;
  }

  /* Hide the standalone hamburger toggle (it's now inside .header__mobile-right) */
  .header > .container > .header__toggle {
    display: none;
  }
}

/* ── Desktop: hide mobile menu, show desktop nav ── */
@media (min-width: 1025px) {
  .mobile-menu {
    display: none !important;
  }
}

/* ── Mobile: hide desktop nav items, show hamburger + mobile menu ── */
@media (max-width: 1024px) {
  /* Hide the desktop nav (it's replaced by mobile-menu) */
  .header__nav {
    display: none !important;
  }

  /* Keep hamburger visible (already handled by header.css toggle rules) */

  /* Mega-menu overrides for desktop hover: prevent bleed-through on mobile */
  .mega-menu--method,
  .mega-menu--solutions {
    display: none !important;
  }
}