/* ==========================================================================
   Componente: Header institucional + navegação desktop
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(150%) blur(6px);
  border-bottom: 1px solid var(--color-border);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-navy-900);
}

.brand:hover {
  color: var(--color-navy-900);
}

.brand__mark {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.brand__subtitle {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: none;
}

@media (min-width: 640px) {
  .brand__subtitle {
    display: block;
  }
}

.main-nav {
  display: none;
}

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

  .main-nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    list-style: none;
    padding: 0;
  }

  .main-nav__link {
    color: var(--color-text);
    font-weight: 600;
    font-size: var(--fs-sm);
    text-decoration: none;
    padding: 8px 2px;
    border-bottom: 2px solid transparent;
  }

  .main-nav__link:hover,
  .main-nav__link:focus-visible,
  .main-nav__link[aria-current='page'] {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
  }
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header__cta {
  display: none;
}

@media (min-width: 640px) {
  .header__cta {
    display: inline-flex;
  }
}

/* ---- Botão do menu mobile (hambúrguer) ---- */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
}

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

.nav-toggle__icon,
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-navy-900);
  transition: transform var(--duration-base) var(--ease-standard),
    opacity var(--duration-base) var(--ease-standard);
}

.nav-toggle__icon {
  position: relative;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav-toggle__icon::before { top: -7px; }
.nav-toggle__icon::after { top: 7px; }

.nav-toggle[aria-expanded='true'] .nav-toggle__icon {
  background: transparent;
}

.nav-toggle[aria-expanded='true'] .nav-toggle__icon::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle__icon::after {
  top: 0;
  transform: rotate(-45deg);
}