/* ============================================================
   SCEVE ENGENHARIA — Header
   ============================================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

/* Transparente no topo (apenas na home) */
.site-header--transparent {
  background-color: transparent;
}

/* Com scroll ou em páginas internas */
.site-header--scrolled,
.site-header--solid {
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: var(--space-8);
}

/* --- Logo --- */

.header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  z-index: 2;
}

.header__logo-img {
  height: 40px;
  width: auto;
}

/* Duas versões da logo: colorida (header branco) e branca (header
   transparente sobre o hero azul). Só uma fica visível por vez. */
.header__logo-img--white {
  display: none;
  height: 40px;
  width: auto;
}

.site-header--transparent .header__logo-img {
  display: none;
}

.site-header--transparent .header__logo-img--white {
  display: block;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.header__logo-name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: var(--letter-spacing-tight);
  transition: color var(--transition-fast);
}

.header__logo-tagline {
  font-size: 0.625rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

/* Escondida no header fixo: o container tem max-width 1280px, e a
   tagline some com o menu completo em qualquer largura de tela.
   Continua visível no rodapé e na página de login. */
.site-header .header__logo-tagline {
  display: none;
}

.site-header--transparent .header__logo-name {
  color: var(--color-white);
}

.site-header--transparent .header__logo-tagline {
  color: rgba(255,255,255,0.7);
}

/* --- Navegação --- */

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

.nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

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

.site-header--transparent .nav__link {
  color: rgba(255, 170, 43, 0.9);
}

.site-header--transparent .nav__link:hover {
  color: var(--color-white);
  background-color: rgba(255,255,255,0.12);
}

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

/* Invisible bridge that covers the gap between trigger and panel,
   preventing mouseleave from firing as the cursor crosses the space */
.nav__item--dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: var(--space-2);
}

.nav__dropdown-arrow {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.nav__item--dropdown:hover .nav__dropdown-arrow,
.nav__item--dropdown.is-open .nav__dropdown-arrow {
  transform: rotate(180deg);
}

.nav__dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 240px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-dropdown);
}

.nav__item--dropdown:hover .nav__dropdown,
.nav__item--dropdown.is-open .nav__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav__dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.nav__dropdown-link svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* --- Header Actions --- */

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Telefone some do header fixo por falta de espaço junto do menu completo;
   continua acessível pelo WhatsApp flutuante, rodapé e menu mobile. */
.header__actions a[href^="tel:"] {
  display: none;
}

/* --- Hamburger --- */

.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  z-index: var(--z-modal);
  transition: background-color var(--transition-fast);
}

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

.hamburger__line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
  transform-origin: center;
}

.site-header--transparent .hamburger__line {
  background-color: var(--color-white);
}

.header__hamburger.is-active .hamburger__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
  width: 0;
}

.header__hamburger.is-active .hamburger__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Mobile Menu --- */

.header__mobile-menu {
  position: fixed;
  inset: 0;
  background-color: var(--color-white);
  z-index: var(--z-overlay);
  padding: calc(var(--header-height) + var(--space-6)) var(--space-6) var(--space-8);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  display: flex;
  flex-direction: column;
}

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

.mobile-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__link:last-child {
  border-bottom: none;
}

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

.mobile-nav__sub {
  display: none;
  padding: var(--space-2) 0 var(--space-2) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__sub.is-open {
  display: block;
}

.mobile-nav__sub-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.mobile-nav__actions {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

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