/* =========================================================
   MOBILE MENU BUTTON
   ========================================================= */

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-left: 1rem;
  align-items: center;
}

.mobile-menu-btn span {
  width: 100%;
  height: 3px;
  background: #ffffff;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-menu-btn:hover span {
  background: rgba(255, 255, 255, 0.85);
}

/* Estado ativo do mobile menu (hamburger -> X) */
.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}


/* =========================================================
   HEADER FINAL – MULTILÍNGUE COM DROPDOWN
   ========================================================= */

.header {
  position: fixed;
  height: 70px;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-surface-base);
  border-bottom: 1px solid var(--color-border-soft);
  overflow: visible;
}

/* Container */
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 2rem;

  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;

  position: relative;
}


.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 0 0 auto;
}

/* Logo */
.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #ffffff;
  text-decoration: none;
  white-space: nowrap;
}

.logo sup {
  font-size: 0.5em;
}

/* Navigation */
.nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  align-items: center;
}

/* Alinhamento vertical de todos os itens do menu */
.nav>a,
.nav>div,
.nav .nav-link,
.nav .nav-item {
  display: flex;
  align-items: center;
  height: 48px;
}

.nav .dropdown {
  display: flex;
  align-items: center;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
}

/* Reset para nav-link usado em <button> (toggles de dropdown) */
button.nav-link {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
}

button.nav-link:focus {
  outline: none;
  background: none;
}

button.nav-link:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.35);
  outline-offset: 4px;
}

.nav-link:hover,
.nav-link.active {
  color: #ffffff;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: #ffffff;
}

/* CTA */
.header-cta {
  flex: 0 0 auto;
  font-size: 0.8rem;
  padding: 0.45rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #ffffff;
  text-decoration: none;
  white-space: nowrap;
}

.header-cta:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* =========================================================
   LANGUAGE SWITCH (FLAGS)
   ========================================================= */

.lang-switch {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

/* Underline institucional */
.lang-flag.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: #ffffff;
  opacity: 0.9;
}

/* Focus acessível elegante */
.lang-flag:focus {
  outline: none;
}

/* =========================================================
   DROPDOWN MENU – ANIMATED VERSION
   ========================================================= */

.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;

  background: var(--color-surface-base);
  border-radius: 10px;
  padding: 0.5rem 0;
  margin-top: 8px;

  list-style: none;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);

  /* Estado inicial oculto */
  opacity: 0;
  transform: translateY(8px);
  visibility: hidden;
  pointer-events: none;

  transition:
    opacity 0.18s ease,
    transform 0.18s ease,
    visibility 0.18s ease;

  z-index: 1100;
}

/* Links */
.dropdown-menu a {
  display: block;
  padding: 0.65rem 1.25rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s ease;
}

.dropdown-menu a:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
}

/* Estado aberto controlado por JS */
.nav-dropdown.active>.dropdown-menu {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
  pointer-events: auto;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */

/* Desktop médio: menu recolhe */
@media (max-width: 1200px) {
  .nav {
    display: none;
    width: 100%;
  }

  /* Mostrar menu quando classe active está presente */
  .nav.active {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 0;

    display: flex;
    flex-direction: column;

    background: var(--color-surface-base);
    padding: 1.5rem 0;

    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);

    z-index: 999;
  }

  .nav.active .nav-link {
    padding: 1.2rem 1.75rem;
    width: 100%;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.3px;
  }

  /* MOBILE DROPDOWN CONTROLADO */
  .nav.active .dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    margin-top: 0;

    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    display: none;
  }

  .nav.active .dropdown-menu a {
    padding: 0.75rem 2.5rem;
    font-size: 0.85rem;
    opacity: 0.8;
  }

  .nav.active .nav-link+.nav-link {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
  }

  .nav.active .nav-toggle {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    opacity: 0.7;
    padding: 1.5rem 1.75rem 0.75rem 1.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav.active .nav-dropdown {
    width: 100%;
  }

  .nav.active .nav-link:hover {
    background: rgba(255, 255, 255, 0.04);
  }

  /* CRÍTICO: Mostrar dropdown quando .active */
  .nav.active .nav-dropdown.active > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  display: block;
}

  .nav.active .dropdown-menu li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .nav.active .dropdown-menu li:last-child {
    border-bottom: none;
  }

  .mobile-menu-btn {
    display: flex;
    margin-left: 0;
  }

  /* Esconder CTA da plataforma no mobile */
  .header-cta {
    display: none !important;
  }
}

/* =========================================================
   LANGUAGE FLAGS - SVG VERSION
   ========================================================= */

.lang-flag {
  background: none;
  border: none;
  font-size: 0;
  /* evita interferência */
  line-height: 1;
  padding: 4px;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lang-flag img {
  width: 22px;
  height: 16px;
  object-fit: cover;
  display: block;
}

.lang-flag:hover {
  transform: translateY(-1px);
  opacity: 0.85;
}

.lang-flag.active {
  background: rgba(255, 255, 255, 0.15);
}

.lang-flag:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.35);
  outline-offset: 3px;
}