/* ============================================================
   header.css — Cabeçalho fixo, navegação e menu mobile
   ============================================================ */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(254, 254, 254, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition:
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.site-header.scrolled {
  background: rgba(254, 254, 254, 0.95);
  border-bottom-color: var(--border);
  box-shadow: 0 4px 24px rgba(39, 27, 71, 0.06);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

/* ---- Marca ---- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  object-fit: contain;
  flex: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.28rem;
  color: var(--heading);
  white-space: nowrap;
}

/* CTA dentro do menu só aparece no mobile */
.nav-cta-mobile {
  display: none;
}

/* ---- Navegação desktop ---- */
.site-nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  padding: 0;
}

.site-nav a {
  position: relative;
  display: inline-block;
  padding: 10px 13px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  border-radius: var(--r-sm);
  transition: color var(--dur-fast) var(--ease);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 6px;
  height: 2px;
  background: var(--secondary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}

.site-nav a:hover {
  color: var(--heading);
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ---- Botão de menu (mobile) ---- */
.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--surface);
  place-items: center;
  color: var(--heading);
}

.menu-toggle svg {
  width: 22px;
  height: 22px;
}

.menu-toggle .icon-close {
  display: none;
}

.site-header.nav-open .menu-toggle .icon-menu {
  display: none;
}

.site-header.nav-open .menu-toggle .icon-close {
  display: block;
}