/**
 * Block: site-header
 * Variations: default (light). States: scrolled via .site-header--scrolled on header.
 */
.site-header .navbar {
  background-color: var(--color-neutral-0);
  box-shadow: var(--shadow-medium);
  /* Cobre conteúdo por baixo ao rolar ou com 2 linhas; barra fixa acima da calculadora e do main */
  z-index: 1020;
  padding-top: max(0.375rem, env(safe-area-inset-top, 0px));
  padding-bottom: 0.375rem;
}

.site-header .navbar-brand img {
  width: 120px;
  animation: breathe 4s infinite ease-in-out;
  will-change: transform;
}

@media (max-width: 767px) {
  .site-header .navbar-brand img {
    animation: none;
    will-change: auto;
  }
}

.site-header .navbar-toggler {
  min-width: 2.75rem;
  min-height: 2.75rem;
  padding: 0.5rem;
  box-sizing: border-box;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

@media (prefers-reduced-motion: reduce) {
  .site-header .navbar-brand img {
    animation: none;
    will-change: auto;
  }
}

/* translateZ(0) favorece camada composta (Lighthouse: animação composta) */
@keyframes breathe {
  0%,
  100% {
    transform: translateZ(0) scale(1);
  }
  50% {
    transform: translateZ(0) scale(1.06);
  }
}

.site-header .navbar-nav .nav-link {
  position: relative;
  color: var(--color-text-heading) !important;
  font-weight: var(--font-weight-medium);
  overflow: hidden;
  transition: color var(--transition-slow);
  min-height: 1.5rem;
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 0.5rem;
  box-sizing: border-box;
}

@media (min-width: 992px) {
  .site-header .navbar-nav .nav-link {
    white-space: nowrap;
  }
}

/* scaleX em vez de width — composição na GPU, sem reflow (Lighthouse: animação não composta / TBT). */
.site-header .navbar-nav .nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header .navbar-nav .nav-link:hover {
  color: var(--color-primary-dark) !important;
}

.site-header .navbar-nav .nav-link:hover::after {
  transform: scaleX(1);
}

.site-header .navbar-nav .nav-link.active {
  color: var(--color-primary) !important;
}

.site-header .navbar-nav .nav-link.active::after {
  transform: scaleX(1);
}

.site-header .navbar .btn--whatsapp-header {
  padding: var(--space-2) 1.125rem;
  font-size: var(--font-size-md);
  flex-shrink: 0;
}

.site-header .navbar .btn--whatsapp-header .potiseg-icon {
  color: var(--color-neutral-0) !important;
}

.site-header .navbar .btn--whatsapp-header:hover .potiseg-icon {
  color: var(--color-neutral-0) !important;
}

/* Navbar colapsada (< lg): evita barra mais larga que o ecrã (logo + toggler) */
.site-header {
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
}

.site-header .navbar {
  max-width: 100%;
}

/* Desktop: uma única linha — logo, links e CTA alinhados ao centro vertical */
@media (min-width: 992px) {
  .site-header .navbar > .layout-container {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    min-width: 0;
    width: 100%;
  }

  .site-header .navbar-brand {
    flex-shrink: 0;
    margin-right: 0;
    display: inline-flex;
    align-items: center;
  }

  .site-header .navbar-collapse {
    flex: 1 1 auto;
    min-width: 0;
  }
}

@media (max-width: 991.98px) {
  /*
   * wrap obrigatório: com nowrap o painel colapsável (flex-basis:100%)
   * não passa para a segunda linha — o menu fica com largura 0 / invisível.
   */
  .site-header .navbar > .layout-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    column-gap: var(--space-2);
    row-gap: 0;
    max-width: 100%;
    padding-left: max(0.75rem, env(safe-area-inset-left, 0px));
    padding-right: max(0.75rem, env(safe-area-inset-right, 0px));
  }

  .site-header .navbar-brand {
    flex: 1 1 auto;
    min-width: 0;
    margin-right: 0;
  }

  .site-header .navbar-toggler {
    flex-shrink: 0;
  }

  .site-header .navbar-collapse {
    flex-basis: 100%;
    flex-grow: 1;
    align-items: stretch;
  }

  /* Linha visual entre barra e menu aberto */
  .site-header .navbar-collapse.is-open {
    padding-top: var(--space-3);
    margin-top: var(--space-2);
    border-top: 1px solid rgba(4, 61, 9, 0.1);
  }
}