/* ============================================================
   HEADER — barra de navegação e menu mobile
   ============================================================ */

header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.logo{
  display:flex; align-items:center;
  text-decoration:none;
}
.logo img{
  display:block;
  height:70px; width:auto;
}
@media (max-width:400px){
  .logo img{ height:60px; }
}
.nav-links{
  display:flex; align-items:center; gap:36px;
  list-style:none; margin:0; padding:0;
}
.nav-links a{
  text-decoration:none;
  font-size:14.5px;
  color:var(--ink-soft);
  transition:color 0.15s ease;
}
.nav-links a:hover{ color:var(--brand); }

.menu-toggle{
  display:none;
  background:none; border:none; cursor:pointer;
  padding:8px; color:var(--ink);
}

/* telas médias: aperta os links antes de virar menu hambúrguer */
@media (max-width:1240px){
  .nav-links{ gap:24px; }
  .nav-links a{ font-size:14px; }
}

@media (max-width:1100px){
  .nav-links{
    position:fixed; inset:76px 0 auto 0;
    background:var(--paper);
    flex-direction:column; align-items:stretch;
    padding:12px 28px 24px;
    gap:4px;
    border-bottom:1px solid var(--line);
    transform:translateY(-8px);
    opacity:0; visibility:hidden;
    transition:opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .nav-links.open{
    opacity:1; visibility:visible; transform:translateY(0);
  }
  .nav-links a{
    display:block;
    padding:12px 4px;
    font-size:16px;
    text-underline-offset:6px;
    text-decoration-thickness:1.5px;
  }
  .nav-links a:hover,
  .nav-links a:focus-visible{ text-decoration:underline; }
  .nav-links .btn{ margin-top:12px; }
  .menu-toggle{ display:block; margin-right:-8px; }
  /* o <nav> fica vazio aqui (links viram menu fixo): CTA encosta no toggle */
  .nav{ justify-content:flex-start; gap:6px; }
  .logo{ margin-right:auto; }
  .nav-cta-desktop{ padding:10px 16px; font-size:13.5px; }
}
@media (max-width:460px){
  .nav-cta-desktop span{ display:none; }
}