/* ==========================================================================
   Header Component — Top Bar + Main Header
   Matches reference: dark blue top bar | white main header
   ========================================================================== */

/* ---------- TOP BAR ---------- */
.topbar {
  background-color: #0A1E3D;
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-sm);
  padding: 0.5rem 0;
  line-height: 1;
  position: relative;
  z-index: 1001;
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.topbar__contact {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.topbar__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
}

.topbar__item a {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.topbar__item a:hover {
  color: #fff;
}

.topbar__item i {
  font-size: 0.75rem;
  opacity: 0.7;
}

.topbar a {
  text-decoration: none;
}

.topbar__social {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar__social a {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-full);
  background: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.7rem;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.topbar__social a:hover {
  background: rgba(255, 255, 255, 0.3);
  color: #fff;
  text-decoration: none;
}

/* ---------- MAIN HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: #fff;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base), border-bottom-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height, 80px);
  gap: var(--space-lg);
}

/* Logo */
.header__logo {
  flex-shrink: 0;
}

.header__logo a {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.header__logo img,
.header__logo .site-logo-img {
  height: 45px;
  width: auto;
  display: block;
}

.header__logo .site-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-heading);
  margin: 0;
}

/* Navigation */
.header__nav {
  display: none;
}

@media (min-width: 1024px) {
  .header__nav {
    flex: 1;
    display: flex;
    justify-content: center;
  }
}

.header__menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__menu li {
  position: relative;
}

.header__menu li a {
  display: inline-flex;
  align-items: center;
  color: var(--color-heading);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  text-decoration: none;
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition-fast);
}

.header__menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.header__menu li a:hover,
.header__menu li.current-menu-item > a,
.header__menu li.current_page_item > a {
  color: var(--color-primary);
}

.header__menu li a:hover::after,
.header__menu li.current-menu-item > a::after,
.header__menu li.current_page_item > a::after {
  width: 100%;
}

/* Dropdown */
.header__menu li ul.sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
  list-style: none;
  z-index: 100;
}

.header__menu li:hover > ul.sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__menu li ul.sub-menu li a {
  display: block;
  padding: 0.6rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-regular);
}

.header__menu li ul.sub-menu li a::after {
  display: none;
}

.header__menu li ul.sub-menu li a:hover {
  background-color: var(--color-primary-soft);
}

/* CTA Button */
.header__actions {
  display: none;
  flex-shrink: 0;
  gap: var(--space-sm);
}

@media (min-width: 1024px) {
  .header__actions {
    display: flex;
    align-items: center;
  }
}

.header__search-toggle {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1.5px solid var(--color-border, #e5e7eb);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  color: var(--color-heading);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.header__search-toggle:hover,
.header__search-toggle[aria-expanded="true"] {
  background: var(--color-primary, #0055FF);
  border-color: var(--color-primary, #0055FF);
  color: #fff;
}

.header__cta {
  border-radius: var(--border-radius-full);
  padding: 0.75rem 1.75rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

/* ---------- SEARCH DROPDOWN (280px, below header) ---------- */
.header__search-dropdown {
  position: absolute;
  top: 100%;
  right: var(--space-lg, 2rem);
  width: 280px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 8px 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  padding: 0.75rem;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s ease, opacity 0.25s ease, padding 0.3s ease;
  padding-top: 0;
  padding-bottom: 0;
  z-index: 999;
}

.header__search-dropdown.is-open {
  max-height: 80px;
  opacity: 1;
  padding: 0.75rem;
}

.header__search-form {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.header__search-input {
  flex: 1;
  height: 40px;
  min-width: 0;
  padding: 0 0.85rem;
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  color: var(--color-heading);
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface, #f8f9fa);
  outline: none;
  transition: border-color var(--transition-fast);
}

.header__search-input:focus {
  border-color: var(--color-primary, #0055FF);
}

.header__search-submit {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary, #0055FF);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.header__search-submit:hover {
  background: var(--color-primary-dark, #0042CC);
}

/* ---------- MOBILE SEARCH ---------- */
.header__mobile-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.header__mobile-search input {
  flex: 1;
  height: 44px;
  padding: 0 1rem;
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--color-heading);
  border: 1.5px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface, #f8f9fa);
  outline: none;
  transition: border-color var(--transition-fast);
}

.header__mobile-search input:focus {
  border-color: var(--color-primary, #0055FF);
}

.header__mobile-search button {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary, #0055FF);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* ---------- HAMBURGER BUTTON ---------- */
.header__menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  background: var(--color-primary, #0055FF);
  border: none;
  border-radius: var(--border-radius-md, 8px);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.header__menu-toggle:hover {
  background: var(--color-primary-dark, #0042CC);
}

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 24px;
}

.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: #fff;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ---------- MOBILE MENU DRAWER ---------- */
.header__mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  width: 85%;
  max-width: 380px;
  height: 100vh;
  height: 100dvh;
  background-color: #fff;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: 1001;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.header__mobile-menu.is-open {
  transform: translateX(0);
}

.header__mobile-menu-inner {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.header__mobile-menu-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

.header__mobile-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary, #0055FF);
  border: none;
  border-radius: var(--border-radius-full);
  cursor: pointer;
  font-size: var(--font-size-lg);
  color: #fff;
  transition: background var(--transition-fast);
}

.header__mobile-close:hover {
  background: var(--color-primary-dark, #0042CC);
}

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

.header__mobile-nav li a {
  display: block;
  padding: 0.85rem 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-heading);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.header__mobile-nav li a:hover,
.header__mobile-nav li.current-menu-item > a {
  color: var(--color-primary);
}

.header__mobile-nav li ul.sub-menu {
  list-style: none;
  padding-left: var(--space-md);
  margin: 0;
}

.header__mobile-nav li ul.sub-menu li a {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-regular);
  padding: 0.6rem 0;
}

/* Mobile contact items */
.header__mobile-contact {
  margin-top: var(--space-xl);
}

.header__mobile-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-body);
  text-decoration: none;
  padding: 0.5rem 0;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.header__mobile-contact-item i {
  color: var(--color-primary);
  width: 18px;
  text-align: center;
}

.header__mobile-contact-item:hover {
  color: var(--color-primary);
}

/* Mobile social */
.header__mobile-social {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.header__mobile-social a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-full);
  background: rgba(0, 85, 255, 0.1);
  color: var(--color-primary, #0055FF);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.header__mobile-social a:hover {
  background: var(--color-primary);
  color: #fff;
}

/* Overlay */
.header__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1000;
}

.header__overlay.is-open {
  opacity: 1;
  visibility: visible;
}

/* ---------- RESPONSIVE ---------- */

/* Hide topbar on small mobile & reduce header height */
@media (max-width: 767px) {
  :root {
    --header-height: 70px;
  }

  .topbar {
    display: none;
  }

  .header__inner {
    height: 70px;
  }

  .header__logo img,
  .header__logo .site-logo-img {
    height: 40px;
  }

  .header__menu-toggle {
    display: flex;
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 480px) {
  :root {
    --header-height: 70px;
  }

  .header__inner {
    height: 70px;
  }

  .header__logo img,
  .header__logo .site-logo-img {
    height: 38px;
  }

  .header__menu-toggle {
    width: 38px;
    height: 38px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .topbar__contact {
    gap: var(--space-md);
    font-size: 0.75rem;
  }

  .header__menu-toggle {
    display: flex;
  }
}

@media (min-width: 1024px) {
  .header__menu-toggle {
    display: none;
  }
}

/* ---------- FRONT PAGE: Transparent Header ---------- */
.home .site-header {
  background-color: transparent;
  border-bottom-color: transparent;
}

.home .site-header .header__menu li a,
.home .site-header .header__logo .site-title,
.home .site-header .header__logo a {
  color: var(--color-heading);
}

.home .site-header .header__menu li a::after {
  background-color: var(--color-primary);
}

.home .site-header .hamburger span {
  background-color: #fff;
}

/* On scroll: restore white background */
.home .site-header.is-scrolled {
  background-color: #fff;
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.home .site-header.is-scrolled .header__menu li a,
.home .site-header.is-scrolled .header__logo .site-title,
.home .site-header.is-scrolled .header__logo a {
  color: var(--color-heading);
}

.home .site-header.is-scrolled .header__menu li a:hover,
.home .site-header.is-scrolled .header__menu li.current-menu-item > a,
.home .site-header.is-scrolled .header__menu li.current_page_item > a {
  color: var(--color-primary);
}

.home .site-header.is-scrolled .header__menu li a::after {
  background-color: var(--color-primary);
}

.home .site-header.is-scrolled .hamburger span {
  background-color: #fff;
}