/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition:
    box-shadow var(--duration) var(--ease-soft),
    border-color var(--duration) var(--ease-soft),
    height var(--duration) var(--ease-soft);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-nav);
  border-bottom-color: var(--whe-border);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  height: 100%;
  width: min(100% - (var(--gutter) * 2), var(--max-width));
  margin-inline: auto;
}

/* Brand ----------------------------------------------------------------- */

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.brand__logo {
  width: clamp(110px, 12vw, 148px);
  height: auto;
  /* Official WHE logo asset — do not redesign */
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 0.85rem + 0.4vw, 1.1rem);
  font-weight: var(--fw-bold);
  letter-spacing: -0.02em;
  color: var(--whe-midnight);
}

.brand__location {
  font-size: 0.68rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--whe-slate);
}

/* Center nav ------------------------------------------------------------ */

.nav-desktop {
  display: flex;
  justify-content: center;
}

.nav-desktop__list {
  display: flex;
  align-items: center;
  gap: clamp(0.35rem, 1.2vw, 1.35rem);
}

.nav-desktop__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 0.35rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--whe-charcoal);
  transition: color var(--duration-fast) var(--ease-soft);
}

.nav-desktop__link:hover,
.nav-desktop__link[aria-current="page"] {
  color: var(--whe-blue);
}

.nav-desktop__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0.35rem;
  right: 0.35rem;
  bottom: 0.15rem;
  height: 2px;
  background: var(--whe-blue);
  border-radius: 1px;
}

.nav-desktop__chevron,
.nav-desktop__link .lucide {
  width: 0.85rem;
  height: 0.85rem;
  opacity: 0.55;
}

/* Dropdown scaffolding (content deferred until next build phase) */
.nav-item {
  position: relative;
}

.nav-item__menu {
  position: absolute;
  top: calc(100% + 0.75rem);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 220px;
  padding: 0.55rem;
  background: var(--whe-white);
  border: 1px solid var(--whe-border-strong);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 40px rgba(4, 26, 47, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--duration-fast) var(--ease-soft),
    transform var(--duration-fast) var(--ease-soft),
    visibility var(--duration-fast);
}

.nav-item:hover .nav-item__menu,
.nav-item:focus-within .nav-item__menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-item__menu a {
  display: block;
  padding: 0.65rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--whe-charcoal);
}

.nav-item__menu a:hover {
  background: var(--whe-ice);
  color: var(--whe-blue);
}

/* Right actions --------------------------------------------------------- */

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.header-actions__mobile {
  display: none;
  align-items: center;
  gap: 0.45rem;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-btn);
  color: var(--whe-midnight);
  background: var(--whe-ice);
  border: 1px solid rgba(8, 126, 245, 0.12);
  transition: background var(--duration-fast) var(--ease-soft);
}

.icon-btn:hover {
  background: #d9f0ff;
}

.icon-btn .lucide {
  width: 1.25rem;
  height: 1.25rem;
}

.menu-toggle {
  background: transparent;
  border: 1px solid var(--whe-border-strong);
}

.menu-toggle__bars {
  position: relative;
  width: 18px;
  height: 12px;
}

.menu-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--whe-midnight);
  border-radius: 1px;
  transition:
    transform var(--duration) var(--ease-out),
    opacity var(--duration) var(--ease-out),
    top var(--duration) var(--ease-out);
}

.menu-toggle__bars span:nth-child(1) {
  top: 0;
}
.menu-toggle__bars span:nth-child(2) {
  top: 5px;
}
.menu-toggle__bars span:nth-child(3) {
  top: 10px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__bars span:nth-child(1) {
  top: 5px;
  transform: rotate(45deg);
}
.menu-toggle[aria-expanded="true"] .menu-toggle__bars span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] .menu-toggle__bars span:nth-child(3) {
  top: 5px;
  transform: rotate(-45deg);
}

/* Mobile drawer --------------------------------------------------------- */

.mobile-nav {
  position: fixed;
  inset: var(--header-height-mobile) 0 0 0;
  z-index: 90;
  background: var(--whe-white);
  padding: 1.25rem var(--gutter) 2rem;
  transform: translateX(100%);
  visibility: hidden;
  transition:
    transform var(--duration) var(--ease-out),
    visibility var(--duration);
  overflow-y: auto;
}

.mobile-nav.is-open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin-bottom: 1.75rem;
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0.25rem;
  border-bottom: 1px solid var(--whe-border);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: var(--fw-bold);
  letter-spacing: -0.02em;
  color: var(--whe-midnight);
}

.mobile-nav__actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mobile-nav__actions .btn {
  width: 100%;
}

body.nav-open {
  overflow: hidden;
}

/* Responsive ------------------------------------------------------------ */

@media (max-width: 1099px) {
  .nav-desktop,
  .header-actions__desktop {
    display: none;
  }

  .header-actions__mobile {
    display: flex;
  }

  .site-header,
  .site-header.is-scrolled {
    height: var(--header-height-mobile);
  }

  .site-header__inner {
    grid-template-columns: 1fr auto;
  }

  .brand__text {
    display: none;
  }

  .brand__logo {
    width: 118px;
  }
}

@media (min-width: 1100px) {
  .mobile-nav {
    display: none;
  }
}