/* ==========================================================================
   header.css — cabeçalho fixo + menu em painel (animado por GSAP)
   O menu funciona igual em todas as larguras: botão sempre visível,
   painel cobrindo a tela, como no demo de referência.
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(34, 29, 33, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--borda);
}

.header__container {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding-inline: var(--sp-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

/* --- logo --- */
.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  z-index: 1003;
}

.header__logo-marca {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}

.header__logo-texto { white-space: nowrap; }

/* --- botão do menu --- */
.nav__toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px 8px 12px;
  z-index: 1003;
  color: var(--texto);
}

.nav__toggle-rotulo {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--texto-suave);
  transition: color 0.2s ease;
}

.nav__toggle:hover .nav__toggle-rotulo { color: var(--acento); }

.nav__toggle-barras {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 30px;
  height: 30px;
}

.nav__toggle-barras span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--texto);
  border-radius: 2px;
  transform-origin: center;
}

/* --- painel do menu --- */
.header__nav {
  position: fixed;
  top: 0;
  right: 0;
  width: min(100vw, 520px);
  height: 100vh;
  height: 100dvh;
  padding: calc(var(--header-h) + var(--sp-5)) clamp(var(--sp-4), 6vw, var(--sp-7)) var(--sp-5);
  background: var(--bg-alt);
  border-left: 1px solid var(--borda);
  display: flex;
  flex-direction: column;
  justify-content: center;
  z-index: 1002;
  visibility: hidden;
  opacity: 0;
  overflow-y: auto;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: clamp(var(--sp-3), 2.5vh, var(--sp-4));
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--font-titulo);
  font-size: clamp(1.9rem, 6vw, 2.9rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--texto-suave);
  transition: color 0.25s ease;
}

.nav__num {
  font-family: var(--font-base);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--acento);
  opacity: 0.7;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--laranja), var(--vermelho));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav__link:hover,
.nav__link--ativo { color: var(--texto); }

.nav__link:hover::after,
.nav__link--ativo::after { transform: scaleX(1); }

.nav__rodape {
  margin-top: var(--sp-6);
  font-size: 0.8rem;
  color: var(--texto-fraco);
  letter-spacing: 0.06em;
}

.nav__rodape-sep { margin-inline: 6px; }

/* --- fundo escuro atrás do painel --- */
.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 12, 14, 0.72);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 1001;
  visibility: hidden;
  opacity: 0;
}

/* fallback quando o GSAP não carrega */
.header__nav.is-active { visibility: visible; opacity: 1; }

@media (max-width: 520px) {
  .header__logo-texto { display: none; }
  .nav__toggle-rotulo { display: none; }
}