/* ===== SITE HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  overflow: visible;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  padding: var(--space-4) 0;
  gap: var(--space-5);
}

/* ===== LOGO ===== */
.header__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.header__logo-img {
  height: 150px;
  width: auto;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  line-height: 1.1;
}

.logo-accent {
  color: var(--color-primary);
}

.logo-tagline {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ===== DESKTOP NAV ===== */
.main-nav {
  display: none;
}

@media (min-width: 1024px) {
  .main-nav {
    display: block;
  }
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

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

.nav__arrow {
  font-size: 0.65em;
  transition: transform var(--transition-fast);
}

.nav__dropdown-trigger[aria-expanded="true"] .nav__arrow {
  transform: rotate(180deg);
}

/* ===== DROPDOWN ===== */
.nav__item--dropdown {
  position: relative;
}

.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-2) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  z-index: var(--z-dropdown);
}

.nav__item--dropdown:hover .nav__dropdown,
.nav__dropdown-trigger[aria-expanded="true"] + .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav__dropdown-link {
  display: block;
  padding: var(--space-3) var(--space-5);
  font-size: var(--fs-sm);
  color: var(--color-text);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.nav__dropdown-link:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

/* ===== HEADER CTA ===== */
.header__cta {
  display: none;
}

@media (min-width: 1024px) {
  .header__cta {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-shrink: 0;
  }
}

/* ===== HAMBURGER ===== */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  cursor: pointer;
  z-index: calc(var(--z-overlay) + 1);
}

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

.hamburger__line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger[aria-expanded="true"] .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== MOBILE NAV ===== */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  z-index: var(--z-overlay);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-base);
}

.mobile-nav[aria-hidden="false"] {
  transform: translateX(0);
}

@media (min-width: 1024px) {
  .mobile-nav {
    display: none !important;
  }
}

.mobile-nav__list {
  padding: var(--space-5) var(--space-4);
}

.mobile-nav__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: var(--space-4) var(--space-3);
  font-size: var(--fs-md);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  cursor: pointer;
}

.mobile-nav__link:hover {
  color: var(--color-primary);
}

.mobile-nav__toggle .nav__arrow {
  transition: transform var(--transition-fast);
}

.mobile-nav__toggle[aria-expanded="true"] .nav__arrow {
  transform: rotate(180deg);
}

.mobile-nav__sub {
  padding-left: var(--space-5);
}

.mobile-nav__sublink {
  display: block;
  padding: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--fs-base);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.mobile-nav__sublink:hover {
  color: var(--color-primary);
}

.mobile-nav__cta {
  padding: var(--space-5) var(--space-3);
}

/* Body scroll lock when nav is open */
body.nav-open {
  overflow: hidden;
}