/*--------------------------------------------------------------
  Header — topbar, logo, primary nav, dropdowns, mobile menu
--------------------------------------------------------------*/

.topbar {
  background: var(--color-secondary);
  color: var(--color-text-inverse);
  font-size: var(--fs-small);
  padding: 0.625rem 0;
}

.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.topbar a {
  color: rgba(255, 255, 255, 0.85);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.topbar a:hover {
  color: var(--color-accent);
}

.topbar-social {
  display: flex;
  gap: var(--space-3);
}

.topbar-social a {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
}

.topbar-social a:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--t), background var(--t);
}

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

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 84px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-heading);
  letter-spacing: -0.02em;
}

.logo:hover {
  color: var(--color-heading);
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.25rem;
  box-shadow: var(--shadow-brand);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.75rem 1rem;
  color: var(--color-heading);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: color var(--t), background var(--t);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  background: rgba(255, 87, 34, 0.15);
}

.nav-item.has-dropdown > .nav-link::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 0.75rem;
  margin-left: 0.25rem;
  transition: transform var(--t);
}

.nav-item.has-dropdown:hover > .nav-link::after {
  transform: rotate(180deg);
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-2);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--t);
  list-style: none;
  margin: 0;
}

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

.dropdown a {
  display: block;
  padding: 0.625rem 1rem;
  color: var(--color-heading);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: var(--fs-small);
  border-radius: var(--radius-sm);
  transition: all var(--t);
}

.dropdown a:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding-left: 1.25rem;
}

[data-theme="dark"] .dropdown a:hover {
  background: rgba(255, 87, 34, 0.15);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle,
.search-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-heading);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
}

.theme-toggle:hover,
.search-toggle:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  transform: rotate(15deg);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-left: var(--space-4);
  border-left: 1px solid var(--color-border);
}

.header-cta .call-info {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header-cta .call-info small {
  color: var(--color-muted);
  font-size: var(--fs-xs);
}

.header-cta .call-info strong {
  color: var(--color-heading);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
}

.call-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

[data-theme="dark"] .call-icon {
  background: rgba(255, 87, 34, 0.15);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-heading);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 90vw);
  background: var(--color-bg);
  z-index: var(--z-modal);
  padding: var(--space-8) var(--space-6);
  transform: translateX(100%);
  transition: transform var(--t-slow);
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

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

.mobile-menu .close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-heading);
  cursor: pointer;
}

.mobile-menu ul {
  list-style: none;
  padding: 0;
  margin: var(--space-10) 0 0;
}

.mobile-menu li {
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu a {
  display: block;
  padding: var(--space-4) 0;
  color: var(--color-heading);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(14, 27, 50, 0.6);
  z-index: calc(var(--z-modal) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--t);
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

/*--------------------------------------------------------------
  Tracking field — the topbar slot every logistics visitor
  looks for first. A plain GET form, so it works without JS.
--------------------------------------------------------------*/

.topbar-track {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 2px 2px 2px var(--space-3);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: border-color var(--t), background var(--t);
}

.topbar-track:focus-within {
  background: rgba(255, 255, 255, 0.16);
  border-color: var(--color-primary);
}

.topbar-track > i {
  color: var(--color-accent);
  font-size: 0.8125rem;
}

.topbar-track input {
  width: 210px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--color-text-inverse);
  font-family: inherit;
  font-size: var(--fs-xs);
}

.topbar-track input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.topbar-track input:focus {
  outline: none;
}

.topbar-track button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* Comfortably past the 24px WCAG minimum without inflating the top bar. */
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.6875rem;
  cursor: pointer;
  transition: background var(--t);
}

.topbar-track button:hover {
  background: var(--color-primary-hover);
}

/* Phone: the topbar is gone, so the mobile menu carries the field. */
.mobile-track {
  display: flex;
  gap: var(--space-2);
  margin: var(--space-6) 0 var(--space-2);
}

.mobile-track input {
  flex: 1;
  min-width: 0;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-size: var(--fs-small);
}

.mobile-track button {
  flex: none;
  width: 46px;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-white);
  cursor: pointer;
}