/* ============================================
   CIVIC CMS BRASIL — Header
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
  height: var(--header-height);
}

.header--scrolled {
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  max-width: var(--max-content-wide);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
  text-decoration: none;
  z-index: 10;
}

.header__logo img {
  height: auto !important;
  width: auto  !important;
  transition: height var(--transition-fast);
}

.header--scrolled .header__logo img {
  height: auto;
}

.header__logo-text {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--civic-primary-600);
  letter-spacing: var(--tracking-tight);
}

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

@media (min-width: 1024px) {
  .header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }
}

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

.header__nav-item {
  position: relative;
}

.header__nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-body);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.header__nav-link:hover {
  color: var(--civic-primary-500);
  background: var(--civic-primary-50);
  text-decoration: none;
}

.header__nav-link--active {
  color: var(--civic-primary-500);
}

.header__nav-chevron {
  font-size: 0.65em;
  transition: transform var(--transition-fast);
  color: var(--text-muted);
}

.header__nav-item:hover .header__nav-chevron {
  transform: rotate(180deg);
}

/* Dropdown */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
  z-index: var(--z-dropdown);
}

.header__nav-item:hover .header__dropdown,
.header__nav-item:focus-within .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-body);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.header__dropdown-link:hover {
  background: var(--civic-primary-50);
  color: var(--civic-primary-600);
  text-decoration: none;
}

.header__dropdown-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--civic-primary-50);
  color: var(--civic-primary-500);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.header__dropdown-text {
  display: flex;
  flex-direction: column;
}

.header__dropdown-label {
  font-weight: var(--font-medium);
  color: var(--text-heading);
}

.header__dropdown-desc {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: var(--font-regular);
}

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

@media (min-width: 1024px) {
  .header__cta {
    display: flex;
  }
}

/* Hamburger */
.header__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  cursor: pointer;
  z-index: 10;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.header__hamburger:hover {
  background: var(--bg-light);
}

.header__hamburger-line {
  width: 22px;
  height: 2px;
  background: var(--text-heading);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

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

.header__hamburger[aria-expanded="true"] .header__hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

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

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

/* Mobile Menu */
.header__mobile {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  height: 100dvh;
  background: var(--bg-white);
  z-index: var(--z-overlay);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
  padding-top: calc(var(--header-height) + var(--space-6));
  padding-bottom: var(--space-8);
}

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

.header__mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-overlay) - 1);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
}

.header__mobile-overlay--visible {
  opacity: 1;
  visibility: visible;
}

.header__mobile-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: 0 var(--container-padding);
}

.header__mobile-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--text-heading);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.header__mobile-link:hover {
  background: var(--civic-primary-50);
  color: var(--civic-primary-600);
  text-decoration: none;
}

.header__mobile-sub {
  padding-left: var(--space-6);
}

.header__mobile-sub .header__mobile-link {
  font-size: var(--text-sm);
  font-weight: var(--font-regular);
  color: var(--text-body);
}

.header__mobile-cta {
  padding: var(--space-4) var(--container-padding);
  margin-top: var(--space-4);
  border-top: 1px solid var(--border-light);
}

/* Spacer for fixed header */
.header-spacer {
  height: var(--header-height);
}