/* Header fixo no topo */
.site-header .container {
  position: sticky; top: 0;
  z-index: 999;             /* acima da hero e efeitos */
  isolation: isolate;       /* cria stacking context próprio */
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: min(1100px, 92vw);
  margin-inline: auto;
  padding: 14px 0;
  overflow-x: hidden;
}

/* Mantém seu comportamento atual do menu */
.site-header .nav ul {
  display: flex;
  gap: 18px;
}

/* Container apenas dentro do header (não afeta outras .container) */
.site-header .container {
  width: min(1100px, 92vw);
  margin-inline: auto;
}

/* Layout do header */
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: .2px;
}

.brand .accent {
  color: var(--brand);
}

/* Navegação principal */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--header-line);
  color: #fff;
  padding: 6px 10px;
  border-radius: 8px;
}

/* Escopo a nav do header para evitar conflitos com outras .nav da página */
.site-header .nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 18px;
}

.site-header .nav a {
  color: var(--header-text);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
}

.site-header .nav a:hover {
  background: rgba(255, 255, 255, .04);
  color: var(--header-text-hover);
}

/* Responsivo: menu sanduíche */
@media (max-width: 860px){
  .nav-toggle{ display:block; }

  /* escondido por padrão */
  #primary-nav{ display:none; }

  /* overlay fixo, fora do fluxo, sobre a página */
  #primary-nav.open{
    display:block !important;
    position: fixed;
    right: 4vw;
    top: var(--header-h, 64px); /* altura do header calculada no JS */
    min-width: 240px;
    max-width: 90vw;
    max-height: calc(100dvh - var(--header-h, 64px) - 2rem);
    overflow: auto;

    background: rgba(23,26,33,1);
    border: 1px solid var(--header-line);
    border-radius: 12px;
    box-shadow: 0 16px 32px rgba(0,0,0,.45);
    z-index: 1000;
  }

  .site-header #primary-nav ul{
    display:flex; flex-direction: column; gap:6px; margin:0; padding:0; list-style:none;
  }
  .site-header #primary-nav a{
    display:block; padding:10px 12px; border-radius:8px; color: var(--header-text);
  }
  .site-header #primary-nav a:hover{
    background: rgba(255,255,255,.06); color: var(--header-text-hover);
  }

  /* trava o scroll da página quando menu estiver aberto */
  html.nav-open, body.nav-open { overflow: hidden; }
}

/* garante os itens do topo em linha */
.site-header .nav-wrap{
  display:flex; flex-direction: row; align-items:center; justify-content:space-between; gap:16px;
}