/* ==========================================================================
   09 · FOOTER
   Preto, emendado na faixa escura do FAQ. Marca, chamada, navegação,
   contato e redes (só as configuradas em js/config.js); assinatura com o
   wordmark grande; direitos e "voltar ao topo" (scroll suave pelo CSS base).
   Mobile: tudo em coluna, links com área de toque de 44px.

   Wordmark: 8,68em de largura; 9,23em com a barra esticada no hover.
   font-size = 100 / 9,23 = 10,8cqi (cabe esticado sem vazar).
   ========================================================================== */

.site-footer {
  position: relative;
  background: var(--c-ink);
  color: var(--c-paper);
  padding-top: clamp(2.5rem, 1.5rem + 4vw, 5rem);
  padding-bottom: calc(var(--sp-5) + env(safe-area-inset-bottom, 0px));
}

.site-footer :focus-visible {
  outline-color: var(--c-acid);
}

.site-footer__inner {
  border-top: 1px solid rgb(245 245 245 / 0.14);
  padding-top: clamp(2.5rem, 1.8rem + 3vw, 4.5rem);
}

/* Colunas ---------------------------------------------------------------- */
.site-footer__top {
  display: grid;
  gap: var(--sp-7) var(--sp-6);
}

.site-footer__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-s);
  line-height: 1.5;
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
  color: rgb(245 245 245 / 0.72);
}

.site-footer__tag span {
  color: var(--c-acid);
}

.site-footer__cta {
  margin-top: var(--sp-5);
  font-size: var(--fs-s);
}

@media (hover: hover) {
  .site-footer__cta:hover {
    box-shadow: 3px 3px 0 var(--c-paper);
  }
}

.site-footer__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-acid);
}

.site-footer__list {
  display: grid;
  margin-top: var(--sp-3);
  padding: 0;
  list-style: none;
}

/* Link: marca verde entra pela esquerda e o sublinhado cresce */
.foot-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.1875rem);
  line-height: 1.25;
}

.foot-link::before {
  content: "";
  flex: none;
  width: 0.45em;
  height: 0.45em;
  margin-right: -0.45em;
  background: var(--c-acid);
  scale: 0;
  transition:
    scale var(--dur-base) var(--ease-snap),
    margin var(--dur-base) var(--ease-out);
}

.foot-link span {
  background-image: linear-gradient(var(--c-acid), var(--c-acid));
  background-repeat: no-repeat;
  background-position: left 100%;
  background-size: 0% 2px;
  padding-bottom: 2px;
  transition: background-size var(--dur-base) var(--ease-out);
}

@media (hover: hover) {
  .foot-link:hover::before {
    margin-right: 0.6em;
    scale: 1;
  }

  .foot-link:hover span {
    background-size: 100% 2px;
  }
}

.foot-link:focus-visible::before {
  margin-right: 0.6em;
  scale: 1;
}

.foot-link:focus-visible span {
  background-size: 100% 2px;
}

/* Redes: círculos que viram selos verdes */
.site-footer__social {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
  padding: 0;
  list-style: none;
}

.social {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border: 1.5px solid rgb(245 245 245 / 0.4);
  border-radius: 50%;
  -webkit-tap-highlight-color: transparent;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    rotate var(--dur-base) var(--ease-snap),
    scale var(--dur-base) var(--ease-snap);
}

.social svg {
  width: 1.375rem;
  height: 1.375rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (hover: hover) {
  .social:hover {
    border-color: var(--c-acid);
    background-color: var(--c-acid);
    color: var(--c-ink);
    rotate: -8deg;
    scale: 1.08;
  }
}

.social:focus-visible {
  border-color: var(--c-acid);
  background-color: var(--c-acid);
  color: var(--c-ink);
}

.social:active {
  scale: 0.94;
}

/* Assinatura: wordmark grande -------------------------------------------- */
.site-footer__mark {
  margin-top: clamp(3rem, 2rem + 5vw, 6.5rem);
  container-type: inline-size;
}

.site-footer__wordmark {
  --wordmark-size: 10.8cqi;
  display: flex;
  width: fit-content;
}

/* Base ------------------------------------------------------------------- */
.site-footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-3);
  margin-top: clamp(1.5rem, 1rem + 2vw, 2.5rem);
  padding-top: var(--sp-4);
  border-top: 1px solid rgb(245 245 245 / 0.14);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-mono);
  text-transform: uppercase;
}

.site-footer__copy {
  color: rgb(245 245 245 / 0.62);
}

.site-footer__stripes {
  --stripes-color: var(--c-acid);
  --stripes-w: 3.5rem;
  --stripes-h: 0.85rem;
}

.site-footer__top-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  min-height: 2.75rem;
  font-weight: 700;
  transition: color var(--dur-fast) var(--ease-out);
}

.arrow-swap--north {
  --arrow-dx: 0%;
  --arrow-dy: -115%;
}

@media (hover: hover) {
  .site-footer__top-link:hover {
    color: var(--c-acid);
  }
}

.site-footer__top-link:focus-visible {
  color: var(--c-acid);
}

/* ==========================================================================
   Tablet e desktop
   ========================================================================== */
@media (min-width: 40em) {
  .site-footer__top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .site-footer__copy {
    flex: 1;
  }
}

@media (min-width: 64em) {
  .site-footer__top {
    grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  }
}