/* ==========================================================
   Header fixo — transparente no topo, sólido ao rolar
   ========================================================== */
.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
}

/* Fundo em pseudo-elemento: backdrop-filter direto no header prenderia o menu mobile (fixed) dentro dele */
.header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
  opacity: 0;
  transition: opacity var(--transition);
}

.header.is-scrolled::before {
  opacity: 1;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

/* Logo (trocar pelo arquivo em assets/img/logo quando o cliente enviar) */
.logo {
  position: relative;
  z-index: 110;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.75rem;
  letter-spacing: 0.06em;
  line-height: 1;
}

.logo__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 44px;
  padding-bottom: 6px;
  background: var(--color-yellow);
  color: var(--color-black);
  font-size: 1.5rem;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 50% 100%, 0 72%);
}

.logo__text span {
  color: var(--color-yellow);
}

/* Navegação */
.nav__list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  position: relative;
  padding-block: 0.4rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-yellow);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--text-primary);
}

.nav__link:hover::after,
.nav__link.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav__cta {
  padding: 0.7rem 1.25rem;
}

/* Botão hambúrguer */
.menu-toggle {
  position: relative;
  z-index: 110;
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-white);
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 900px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-black);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
  }

  .nav.is-open {
    opacity: 1;
    visibility: visible;
  }

  .nav__list {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .nav__link {
    font-family: var(--font-display);
    font-size: 2.25rem;
    letter-spacing: 0.04em;
  }

  .nav__cta {
    margin-top: var(--space-sm);
  }
}