/* ============================================================
   Header fixo + navegação em pílula
   ============================================================ */
header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:var(--z-header);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:18px clamp(16px,4vw,40px);
  transition:padding .45s var(--ease),background .45s var(--ease),box-shadow .45s var(--ease);
}
header.rolou{
  padding:11px clamp(16px,4vw,40px);
  background:rgba(253,247,241,.82);
  backdrop-filter:blur(16px) saturate(1.4);
  box-shadow:var(--sombra-p);
}

/* --- marca --- */
.marca{
  display:flex;
  align-items:center;
  gap:11px;
  line-height:1;
}
.marca b{
  font-family:var(--display);
  font-weight:800;
  font-size:1.45rem;
  letter-spacing:-.04em;
  color:var(--tinta);
}
.marca i{
  font-style:normal;
  font-size:.6rem;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--tinta-tenue);
  max-width:12ch;
  line-height:1.3;
}
/* pastilha colorida antes do nome */
.marca::before{
  content:"";
  width:30px;height:30px;
  flex:none;
  border-radius:11px;
  background:var(--grad-quente);
  box-shadow:var(--sombra-p);
  transition:transform .5s var(--ease-pulo);
}
.marca:hover::before{transform:rotate(-12deg) scale(1.08)}

/* --- links --- */
nav{
  display:flex;
  gap:4px;
  align-items:center;
  padding:5px;
  border-radius:var(--pilula);
  background:rgba(255,255,255,.6);
  border:var(--borda);
  backdrop-filter:blur(10px);
}
nav a{
  padding:9px 18px;
  border-radius:var(--pilula);
  font-size:.86rem;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--tinta-suave);
  transition:color .3s var(--ease),background .3s var(--ease),transform .3s var(--ease-pulo);
}
nav a:hover{
  color:var(--tinta);
  background:var(--uva-leve);
  transform:translateY(-2px);
}

/* --- botão do menu mobile --- */
.menu-btn{
  display:none;
  position:relative;
  width:46px;height:46px;
  border-radius:16px;
  background:var(--cartao);
  box-shadow:var(--sombra-p);
  border:var(--borda);
}
.menu-btn span{
  position:absolute;left:13px;
  height:2.5px;width:20px;
  border-radius:2px;
  background:var(--tinta);
  transition:.4s var(--ease);
}
.menu-btn span:nth-child(1){top:17px}
.menu-btn span:nth-child(2){bottom:17px;width:13px}
.menu-btn.aberto span:nth-child(1){top:21px;transform:rotate(45deg)}
.menu-btn.aberto span:nth-child(2){bottom:22px;width:20px;transform:rotate(-45deg)}

@media(max-width:900px){
  .menu-btn{display:block;z-index:2}

  /* Sem backdrop-filter aqui: ele cria bloco de contenção e o menu,
     que é `fixed`, passaria a se posicionar dentro do header em vez
     da tela inteira — o menu abria recortado e transparente. */
  header.rolou{
    backdrop-filter:none;
    background:rgba(253,247,241,.96);
  }

  nav{
    position:fixed;inset:0;
    flex-direction:column;
    justify-content:center;
    gap:12px;
    padding:0;
    border:0;
    border-radius:0;
    background:var(--papel);
    backdrop-filter:none;
    clip-path:circle(0% at 92% 5%);
    transition:clip-path .7s var(--ease);
  }
  nav.aberto{clip-path:circle(150% at 92% 5%)}
  nav a{
    font-family:var(--display);
    font-size:2rem;
    font-weight:800;
    letter-spacing:-.03em;
    padding:10px 26px;
  }
}

/* celular deitado: a tela fica baixa e os links não cabem inteiros */
@media(max-width:900px) and (max-height:520px){
  nav{gap:2px}
  nav a{font-size:1.35rem;padding:7px 22px}
}