/* ==========================================================================
   header.css — Header fixo, navegação desktop e menu mobile
   Importar APÓS main.css e ANTES de animations.css.
   ========================================================================== */

/* ==========================================================================
   1. Header base — fixo no topo, translúcido
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition:
    background-color 280ms ease,
    box-shadow 280ms ease;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 0.875rem;
  transition: padding-block 280ms ease;
}

/* Estado após scroll — fundo mais sólido + sombra sutil */
.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.97);
  box-shadow: 0 2px 18px -6px rgba(12, 59, 90, 0.16);
}

.site-header.scrolled .site-header__inner {
  padding-block: 0.625rem;
}


/* ==========================================================================
   2. Logo
   ========================================================================== */

.site-header__logo {
  display: block;
  flex-shrink: 0;
  line-height: 0; /* remove espaço inline abaixo da img */
}

.site-header__logo img {
  width: 132px;
  height: 56px;
  object-fit: contain;
}


/* ==========================================================================
   3. Navegação desktop
   ========================================================================== */

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

/* Links comuns */
.site-nav a:not(.btn) {
  position: relative;
  color: var(--azul-profundo);
  font-family: var(--fonte-texto);
  font-size: 0.9375rem; /* 15px */
  font-weight: 500;
  padding: 0.4rem 0.625rem;
  border-radius: 6px;
  transition: color 200ms ease;
  white-space: nowrap;
}

/* Underline animado no hover */
.site-nav a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0.625rem;
  right: 0.625rem;
  height: 2px;
  background-color: var(--turquesa);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 220ms ease;
}

.site-nav a:not(.btn):hover {
  color: var(--turquesa);
}

.site-nav a:not(.btn):hover::after {
  transform: scaleX(1);
}

/* CTA WhatsApp — pequena margem à esquerda para distanciar dos links */
.site-nav__cta {
  margin-left: 0.875rem;
}


/* ==========================================================================
   4. Botão hamburger
   ========================================================================== */

.nav-toggle {
  display: none; /* oculto em desktop */
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  flex-shrink: 0;
  cursor: pointer;
  border-radius: var(--raio-sm);
  transition: background-color 180ms ease;
}

.nav-toggle:hover {
  background-color: rgba(12, 59, 90, 0.07);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--azul-profundo);
  border-radius: 2px;
  transform-origin: center;
  transition:
    transform 260ms ease,
    opacity 220ms ease;
}

/* Animação para X quando o menu está aberto */
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

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


/* ==========================================================================
   5. Menu mobile — max-width: 860px
   ========================================================================== */

@media (max-width: 860px) {

  /* Mostrar hamburger */
  .nav-toggle {
    display: flex;
  }

  /* Nav se torna um painel suspenso abaixo do header */
  .site-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;

    position: absolute;
    top: 100%;
    left: 0;
    right: 0;

    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 24px -8px rgba(12, 59, 90, 0.18);

    /* Estado fechado — visualmente oculto mas presente no DOM para transição */
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition:
      max-height 340ms ease,
      opacity 280ms ease;
  }

  /* Estado aberto */
  .site-nav.open {
    max-height: 560px;
    opacity: 1;
    pointer-events: auto;
    padding-block: 0.5rem;
  }

  /* Links empilhados com alvos de toque confortáveis */
  .site-nav a:not(.btn) {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0;
    font-size: 1rem;
    border-bottom: 1px solid rgba(12, 59, 90, 0.06);
  }

  .site-nav a:not(.btn):last-of-type {
    border-bottom: none;
  }

  /* Sem underline animado no mobile (substituído pelo hover de fundo) */
  .site-nav a:not(.btn)::after {
    display: none;
  }

  .site-nav a:not(.btn):hover {
    background-color: rgba(22, 168, 201, 0.08);
    color: var(--turquesa);
  }

  /* CTA ajustada para ficar centralizada com margens */
  .site-nav__cta {
    margin: 0.875rem 1.5rem 0.375rem;
    justify-content: center;
  }
}


/* ==========================================================================
   6. Scroll-margin para links âncora não ficarem sob o header fixo
   ========================================================================== */

.secao {
  scroll-margin-top: 90px;
}