/* ============================================================
   TOPBAR + HEADER + MENU MOBILE
   ============================================================ */
.topbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--divider);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-light);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: 40px;
}

.topbar__text {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.topbar__dot {
  font-size: 0.28rem;
  color: var(--primary);
}

.topbar__links {
  display: flex;
  gap: var(--space-4);
}

.topbar__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  transition: color var(--transition);
}

.topbar__link:hover {
  color: var(--primary);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  transition: background-color var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 84px;
  transition: min-height var(--transition);
}

/* Estado com scroll: glassmorphism discreto */
.header.is-scrolled {
  background: rgba(11, 11, 11, 0.82);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--divider);
}

.header.is-scrolled .header__inner {
  min-height: 72px;
}

@media (prefers-reduced-motion: no-preference) {
  .header.is-scrolled {
    background: rgba(11, 11, 11, 0.72);
  }
}

/* Marca */
.header__brand,
.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.header__brand-logo {
  display: block;
  width: auto;
  height: 38px;
  transition: opacity var(--transition);
}

.header__brand:hover .header__brand-logo,
.footer__logo:hover .header__brand-logo {
  opacity: 0.72;
}

.footer__logo .header__brand-logo {
  height: 46px;
}

/* Navegação desktop */
.header__nav {
  display: flex;
  align-items: center;
  gap: clamp(1.125rem, 2.2vw, 2.125rem);
}

.header__link {
  position: relative;
  padding-block: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text);
  transition: color var(--transition);
}

.header__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 1px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.header__link:hover,
.header__link[aria-current="true"] {
  color: var(--heading);
}

.header__link:hover::after,
.header__link[aria-current="true"]::after {
  transform: scaleX(1);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Hamburger */
.header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  width: 44px;
  height: 44px;
  align-items: flex-end;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  padding-inline: 12px;
  background: rgba(11, 11, 11, 0.4);
  transition: border-color var(--transition);
}

.header__burger:hover {
  border-color: var(--primary);
}

.header__burger-line {
  width: 100%;
  height: 1px;
  background: var(--heading);
  transition: transform var(--transition), width var(--transition), background-color var(--transition);
}

.header__burger-line:nth-child(2) {
  width: 70%;
}

.header.is-open .header__burger-line:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.header.is-open .header__burger-line:nth-child(2) {
  width: 100%;
  transform: translateY(-4px) rotate(-45deg);
}

/* Menu mobile */
.menu-mobile {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  background: rgba(11, 11, 11, 0.96);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  padding: var(--space-7) var(--gutter) var(--space-5);
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

/* Header (z 100) permanece acima do overlay para manter o botão acessível */
.header.is-open ~ .menu-mobile {
  opacity: 1;
  visibility: visible;
}

.menu-mobile__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.menu-mobile__link {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--title-sm);
  font-weight: 500;
  color: var(--heading);
  transition: color var(--transition);
}

.menu-mobile__link:hover {
  color: var(--primary);
}

.menu-mobile__cta {
  min-width: 240px;
}

.menu-mobile__note {
  font-size: var(--text-xs);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-light);
}