/* ==========================================================================
   Header — Fixed header + mega menu
   ========================================================================== */

/* --- Site Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

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

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* --- Logo --- */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  z-index: 1001;
}

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

.site-logo__img {
  height: 32px;
  width: auto;
  display: block;
  max-height: calc(var(--header-height) - 24px);
  object-fit: contain;
}

/* --- Desktop Nav --- */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  height: 100%;
}

.nav-desktop__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  transition: color var(--transition);
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-desktop__link:hover,
.nav-desktop__link--active {
  color: var(--color-primary);
}

/* Rjesenja trigger */
.nav-desktop__trigger {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-desktop__trigger-btn {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  height: 100%;
  transition: color var(--transition);
}

.nav-desktop__trigger-btn:hover {
  color: var(--color-primary);
}

.nav-desktop__trigger-btn svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition);
}

.nav-desktop__trigger:hover .nav-desktop__trigger-btn svg,
.nav-desktop__trigger--open .nav-desktop__trigger-btn svg {
  transform: rotate(180deg);
}

/* --- Mega Menu --- */
.mega-menu {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: #FFFFFF;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  z-index: 999;
}

.nav-desktop__trigger:hover .mega-menu,
.mega-menu--open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-menu__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  padding: var(--space-2xl) 0;
}

.mega-menu__column {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mega-menu__heading {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.mega-menu__item {
  display: block;
  padding: var(--space-sm) 0;
  transition: color var(--transition);
}

.mega-menu__item:hover {
  color: var(--color-primary);
}

.mega-menu__item-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin-bottom: 2px;
  transition: color var(--transition);
}

.mega-menu__item:hover .mega-menu__item-title {
  color: var(--color-primary);
}

.mega-menu__item-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  line-height: var(--line-height-base);
}

.mega-menu__cta {
  display: flex;
  gap: var(--space-md);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  grid-column: 1 / -1;
}

/* --- Hamburger (mobile) --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  z-index: 1001;
}

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

.hamburger--active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger--active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger--active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Mobile Menu Overlay --- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 1000;
  padding-top: var(--header-height);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

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

.mobile-menu__inner {
  padding: var(--space-xl) var(--space-lg);
}

/* Accordion groups */
.mobile-menu__group {
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-md) 0;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.mobile-menu__group-title svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition);
}

.mobile-menu__group[open] .mobile-menu__group-title svg {
  transform: rotate(180deg);
}

.mobile-menu__group-content {
  padding: 0 0 var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-menu__link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.mobile-menu__link:hover {
  background-color: var(--color-primary-bg);
  color: var(--color-primary);
}

.mobile-menu__link-title {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: 2px;
}

.mobile-menu__link-desc {
  font-size: var(--font-size-xs);
}

.mobile-menu__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-top: var(--space-xl);
  margin-top: var(--space-md);
}

.mobile-menu__cta .btn {
  width: 100%;
  justify-content: center;
}

.mobile-menu__top-link {
  display: block;
  padding: var(--space-md) 0;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}