/* ===== Site Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: rgba(255, 255, 255, 0.98);
  border-bottom: var(--border-thin);
  backdrop-filter: blur(16px);
  transition: box-shadow var(--transition-mid);
}

.site-header--scrolled,
body:not(.has-hero) .site-header {
  box-shadow: 0 1px 0 var(--color-border);
}

.site-topbar {
  background: var(--color-teal);
  color: var(--color-near-black);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
}

.site-topbar__inner {
  min-height: 32px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-3);
}

.site-topbar__contact,
.site-topbar__social {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-topbar__social {
  justify-content: flex-end;
}

.site-topbar a {
  color: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.site-topbar svg,
.site-header__actions svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.site-topbar__message {
  margin: 0;
  text-align: center;
}

.site-header__inner {
  min-height: 78px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-4);
}

.site-header__logo {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.site-header__logo img {
  height: 38px;
  width: auto;
}

.site-header__actions {
  grid-column: 3;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  min-width: 0;
}

/* CTA principal do header — botão sólido (antes: link sem estilo) */
.site-header__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-near-black);
  color: var(--color-white);
  padding: 10px 20px;
  border: 1px solid var(--color-near-black);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-mid), border-color var(--transition-mid), transform var(--transition-fast);
}

.site-header__cta:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.site-header__cta:active {
  transform: translateY(1px);
}

/* (ícones de conta/busca/favoritos do e-commerce removidos — site institucional) */

/* ===== Navigation ===== */
.site-nav {
  grid-column: 1;
  justify-self: start;
}

.site-nav__list {
  display: flex;
  gap: clamp(var(--space-3), 3vw, var(--space-5));
  list-style: none;
}

.site-nav__list a {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text);
  position: relative;
  padding-block: 4px;
}

.site-nav__list a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-mid);
}

.site-nav__list a:hover::after,
.site-nav__list a[aria-current="page"]::after {
  width: 100%;
}

.site-nav__mobile-brand,
.site-nav__mobile-footer {
  display: none;
}

/* ===== Language Toggle ===== */
.btn-lang {
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.1em;
  background: none;
  border: 1px solid currentColor;
  border-radius: var(--radius-md);
  padding: 4px 10px;
  cursor: pointer;
  line-height: 1.5;
  color: var(--color-text);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.btn-lang:hover {
  background: var(--color-text);
  color: var(--color-white);
}

/* ===== Hamburger Button ===== */
.btn-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px 4px;
  cursor: pointer;
  color: var(--color-text);
}

.btn-hamburger__bar {
  display: block;
  width: 24px;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--transition-mid), opacity var(--transition-mid);
}

.btn-hamburger[aria-expanded="true"] {
  position: fixed;
  top: 24px;
  left: var(--gutter);
  z-index: calc(var(--z-header) + 2);
}

.btn-hamburger[aria-expanded="true"] .btn-hamburger__bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.btn-hamburger[aria-expanded="true"] .btn-hamburger__bar:nth-child(2) {
  opacity: 0;
}

.btn-hamburger[aria-expanded="true"] .btn-hamburger__bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ===== Mobile / Tablet Navigation ===== */
@media (max-width: 1279px) {
  .site-topbar__inner {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .site-topbar__contact,
  .site-topbar__social {
    display: none;
  }

  .site-header__inner {
    min-height: 72px;
    grid-template-columns: 44px 1fr auto;
  }

  .btn-hamburger {
    grid-column: 1;
    display: flex;
  }

  .site-header__logo {
    grid-column: 2;
  }

  .site-header__logo img {
    height: 36px;
  }

  .site-header__actions {
    grid-column: 3;
    gap: var(--space-2);
  }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    z-index: calc(var(--z-header) + 1);
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(18px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-mid), visibility var(--transition-mid);
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav__mobile-brand {
    display: block;
    position: absolute;
    top: 28px;
    left: 50%;
    transform: translateX(-50%);
  }

  .site-nav__mobile-brand img {
    height: 36px;
    width: auto;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    padding: 0 var(--gutter);
  }

  .site-nav__list a {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
    font-weight: var(--weight-medium);
    letter-spacing: 0;
    text-transform: none;
  }

  .site-nav__mobile-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
  }

  .site-nav__mobile-footer a {
    color: inherit;
    text-decoration: none;
  }

  .site-nav__mobile-footer .site-nav__mobile-cta {
    color: var(--color-white);
    background: var(--color-near-black);
    padding: 12px 22px;
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    font-weight: var(--weight-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--space-2);
  }

  body.nav-open {
    overflow: hidden;
  }
}

/* Em telas estreitas o CTA do header sai (o menu mobile já traz o CTA) */
@media (max-width: 600px) {
  .site-header__cta {
    display: none;
  }
}