/* Header, Footer, Navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  /* background: rgba(10, 10, 10, 0.92); */
  background: #000000;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

/* backdrop-filter no header prende position:fixed ao header; remove ao abrir o menu */
.site-header.is-menu-open {
  z-index: 10001;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-md);
}

.site-header__brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-header__logo {
  height: 110px;
  width: auto;
}

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

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2px;
}

.lang-switcher__btn {
  min-height: 36px;
  min-width: 44px;
  padding: 0.375rem 0.625rem;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.lang-switcher__btn:hover {
  color: var(--color-text);
}

.lang-switcher__btn.is-active {
  background: var(--color-accent);
  color: #fff;
}

/* LinkedIn Button */
.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), border-color var(--transition-fast),
    background var(--transition-fast);
}

.social-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.social-link svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  min-width: 44px;
  min-height: 44px;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--color-border-light);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Navigation */
.main-nav {
  display: none;
}

.main-nav.is-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: var(--header-height) 0 0 0;
  /* background: rgba(10, 10, 10, 0.98); */
  background: #000000;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: var(--space-xl) var(--space-lg);
  gap: var(--space-xs);
  overflow-y: auto;
  z-index: 10001;
  animation: slideDown 0.25s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.main-nav__link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: var(--space-sm) var(--space-md);
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}

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

.main-nav__link.is-active {
  color: var(--color-accent);
  border-left: 2px solid var(--color-accent);
}

.main-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .main-nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    position: static;
    background: transparent;
    backdrop-filter: none;
    padding: 0;
    flex: 1;
    justify-content: center;
    overflow: visible;
  }

  .main-nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-xs);
  }

  .main-nav__link {
    min-height: 44px;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
  }

  .main-nav__link.is-active {
    border-left: none;
    background: var(--color-accent-subtle);
  }
}

/* Footer */
.site-footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-3xl) var(--space-xl);
  margin-top: auto;
}

.site-footer__grid {
  display: grid;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.site-footer__brand {
  max-width: 320px;
}

.site-footer__logo {
  height: 36px;
  width: auto;
  margin-bottom: var(--space-lg);
  opacity: 0.9;
}

.site-footer__desc {
  font-size: 0.875rem;
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.site-footer__social {
  display: flex;
  gap: var(--space-sm);
}

.site-footer__heading {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-silver);
  margin-bottom: var(--space-lg);
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.site-footer__link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.site-footer__link:hover {
  color: var(--color-accent);
}

.site-footer__contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: 36px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.site-footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.site-footer__copyright {
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

@media (min-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

  .site-footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}