/* =========================================================
   5-COMPONENTS / CONTROLS — Tudo que o visitante aciona:
   botões, navegação, troca de idioma, tema, menu, skip link.
   ========================================================= */

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--accent);
  color: var(--on-accent);
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  text-decoration: none;
}

.skip-link:focus-visible {
  left: 0;
}

/* ---------- Link de volta (páginas internas) ---------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 2.2rem;
  transition: color .2s ease;
}

.back-link svg {
  width: 17px;
  height: 17px;
  flex: none;
  transition: transform .2s ease;
}

.back-link:hover {
  color: var(--accent);
}

.back-link:hover svg {
  transform: translateX(-3px);
}

/* ---------- Botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-family: var(--sans);
  font-size: .95rem;
  font-weight: 600;
  padding: .82rem 1.5rem;
  border-radius: 999px;
  border: 1.5px solid transparent;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease,
    box-shadow .2s ease, transform .2s ease, translate .2s ease;
}

.btn-solid {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 8px 20px -16px rgba(27, 35, 30, .8);
}

.btn-solid:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  border-color: var(--line);
  color: var(--ink-2);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--accent-2);
  color: var(--accent-2);
  background: var(--accent-wash);
}

.btn-sm {
  padding: .55rem 1.05rem;
  font-size: .88rem;
}

.btn-lg {
  padding: 1rem 1.9rem;
  font-size: 1rem;
  max-width: 100%;
  overflow-wrap: anywhere;
  white-space: normal;
}

/* ---------- Ações de contato ---------- */
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .8rem;
}

.contact-actions .btn svg {
  flex: none;
}

/* O endereço e o botão de copiar são um bloco só, sem quebra entre eles */
.email-action {
  display: inline-flex;
  align-items: stretch;
  gap: .4rem;
  max-width: 100%;
}

.email-address {
  min-width: 0;
}

.copy-btn {
  width: 46px;
  flex: none;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-wash);
}

.copy-btn svg {
  width: 18px;
  height: 18px;
}

.copy-btn .icon-check {
  display: none;
}

.copy-btn.is-copied {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-wash);
}

.copy-btn.is-copied .icon-copy {
  display: none;
}

.copy-btn.is-copied .icon-check {
  display: block;
}

/* Reserva a altura da mensagem para o conteúdo não pular ao copiar */
.copy-status {
  min-height: 1.5rem;
  margin: .9rem 0 0;
  font-size: .88rem;
  color: var(--accent);
}

@media (max-width: 520px) {
  .contact-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .contact-actions .btn {
    justify-content: center;
  }
}

/* ---------- Navegação ---------- */
.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.7rem;
}

.nav a {
  text-decoration: none;
  font-size: .94rem;
  font-weight: 500;
  color: var(--ink-2);
  position: relative;
  transition: color .2s ease;
}

.nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s ease;
}

.nav a:not(.btn):hover {
  color: var(--accent);
}

.nav a:not(.btn):hover::after,
.nav a.is-current::after {
  transform: scaleX(1);
}

.nav a.is-current {
  color: var(--accent);
}

/* ---------- Troca de idioma ---------- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: .28rem;
  font-size: .8rem;
  font-weight: 600;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .3rem .62rem;
  background: var(--surface);
}

.lang-switch button {
  border: 0;
  background: none;
  padding: .05rem .2rem;
  color: var(--muted);
  cursor: pointer;
  border-radius: 4px;
  transition: color .2s ease;
}

.lang-switch button:hover {
  color: var(--ink);
}

.lang-switch button.is-active {
  color: var(--accent);
}

/* ---------- Botões quadrados do cabeçalho ---------- */
.theme-toggle,
.menu-toggle {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.theme-toggle:hover,
.menu-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* O ícone acompanha o tema efetivo, inclusive sem JavaScript. */
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }

.nav .nav-cta {
  color: var(--ink);
  border: 1px solid transparent;
  background: linear-gradient(var(--bg), var(--bg)) padding-box, var(--gradient) border-box;
}

.nav .nav-cta:hover {
  box-shadow: 0 0 22px var(--accent-wash);
  color: var(--accent);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4.5px;
}

.menu-toggle span {
  display: block;
  width: 17px;
  height: 1.8px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.3px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.3px) rotate(-45deg);
}

/* ---------- Navegação em telas pequenas ---------- */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .header-inner {
    position: relative;
  }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: .5rem max(24px, env(safe-area-inset-left)) 1.2rem;
    margin: 0;
    box-shadow: var(--shadow);
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
    display: none;
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: .85rem 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .nav a:not(.btn)::after {
    display: none;
  }

  .nav-cta {
    margin-top: 1rem;
    border-bottom: 0;
    justify-content: center;
  }
}