/* ============================================================
   FOOTER — masterpage
   Grid 4 colunas no topo, divisória, linha inferior com copyright.
   ============================================================ */

.site-footer {
  background: var(--c-white);
  color: var(--c-dark);
  font-family: var(--ff-body);
}

.site-footer__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ---------- Top (4 colunas) ---------- */

.site-footer__top {
  padding-block: calc(var(--sp-16) + 2rem);
}

.site-footer__top .site-footer__inner {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) 1fr 1fr 1.4fr;
  gap: var(--sp-12);
  align-items: start;
}

.site-footer__brand img {
  width: clamp(130px, 11vw, 180px);
  height: auto;
  display: block;
}

.site-footer__heading {
  margin: 0 0 var(--sp-6) 0;
  font-family: var(--ff-body);
  font-weight: var(--fw-extrabold);
  font-size: var(--fs-100);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-dark);
}

.site-footer__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.site-footer__col a {
  color: var(--c-dark);
  text-decoration: none;
  font-size: var(--fs-100);
  line-height: var(--lh-normal);
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer__col a:hover,
.site-footer__col a:focus-visible {
  color: var(--c-blue);
}

/* ---------- Newsletter ---------- */

.site-footer__newsletter {
  display: flex;
  flex-direction: column;
}

.site-footer__field {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  border-bottom: 1px solid rgba(51, 51, 51, 0.35);
  padding-bottom: var(--sp-3);
  transition: border-color var(--dur-fast) var(--ease-out);
}

.site-footer__field:focus-within {
  border-bottom-color: var(--c-dark);
}

.site-footer__field input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--c-dark);
  font-family: var(--ff-body);
  font-size: var(--fs-200);
  padding: 0;
}

.site-footer__field input::placeholder {
  color: rgba(51, 51, 51, 0.55);
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer__field:focus-within input::placeholder {
  color: rgba(51, 51, 51, 0.3);
}

.site-footer__field button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: inherit;
  transition: transform var(--dur-fast) var(--ease-out);
}

.site-footer__field button:hover,
.site-footer__field button:focus-visible {
  transform: translateX(4px);
}

.site-footer__field button img {
  width: 22px;
  height: auto;
  display: block;
}

/* ---------- Mínimo (página avulsa: só a marca, sem menus nem newsletter) ---------- */

.site-footer--min .site-footer__top {
  padding-block: var(--sp-12);
}

.site-footer--min .site-footer__top .site-footer__inner {
  grid-template-columns: 1fr;
  justify-items: center;
}

/* ---------- Bottom ---------- */

.site-footer__bottom {
  border-top: 1px solid rgba(51, 51, 51, 0.12);
  padding-block: var(--sp-8);
}

.site-footer__bottom .site-footer__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--sp-4);
}

.site-footer__braskem img {
  height: 28px;
  width: auto;
  display: block;
}

.site-footer__braskem-link {
  position: relative;
  display: inline-block;
  line-height: 0;
}

/* Hover troca o logo pela versão azul (blue) via content: url()
   — swap CSS-only, sem mexer no markup. Path relativo ao CSS
   (footer.css vive em /css/, então ../assets/... resolve certo
   tanto local quanto em produção). */
.site-footer__braskem-link:hover img,
.site-footer__braskem-link:focus-visible img {
  content: url("../assets/svg/logo-Braskem-blue.svg");
}

.site-footer__braskem-link::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translate(-50%, 4px);
  padding: 0.4rem 0.7rem;
  background: var(--c-dark);
  color: var(--c-white);
  font-family: var(--ff-body);
  font-size: var(--fs-100);
  font-weight: var(--fw-regular);
  line-height: 1;
  white-space: nowrap;
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
  z-index: 1;
}

.site-footer__braskem-link::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(100% + 4px);
  transform: translate(-50%, 4px);
  border: 6px solid transparent;
  border-top-color: var(--c-dark);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
  z-index: 1;
}

.site-footer__braskem-link:hover::after,
.site-footer__braskem-link:focus-visible::after,
.site-footer__braskem-link:hover::before,
.site-footer__braskem-link:focus-visible::before {
  opacity: 1;
  transform: translate(-50%, 0);
}

.site-footer__copyright {
  margin: 0;
  text-align: center;
  font-size: var(--fs-100);
  color: var(--c-dark);
}

.site-footer__legal {
  justify-self: end;
  display: flex;
  gap: var(--sp-8);
}

.site-footer__legal a {
  color: var(--c-dark);
  text-decoration: none;
  font-size: var(--fs-100);
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer__legal a:hover,
.site-footer__legal a:focus-visible {
  color: var(--c-blue);
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .site-footer__top .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-10);
  }
  .site-footer__brand { grid-column: 1 / -1; }
}

/* Tablet portrait: volta às 3 colunas (Explore + Support + Newsletter)
   abaixo do brand, pra newsletter não cair sozinha numa linha. Gap
   reduzido e newsletter em 1fr (ao invés de 1.4fr) pra caber em ~768px. */
@media (min-width: 768px) and (orientation: portrait) {
  .site-footer__top .site-footer__inner {
    grid-template-columns: 1fr 1fr 1fr;
    column-gap: var(--sp-6);
    row-gap: var(--sp-12);
  }
  .site-footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .site-footer__top { padding-block: var(--sp-12); }

  .site-footer__top .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--sp-10);
  }

  /* Reordena a coluna: Explore → Support → Newsletter → I'm green logo centralizado.
     DOM fica (brand, explore, support, newsletter); `order` reposiciona visualmente. */
  .site-footer__col:first-of-type { order: 1; } /* Explore */
  .site-footer__col:last-of-type  { order: 2; } /* Support */
  .site-footer__newsletter        { order: 3; }
  .site-footer__brand {
    order: 4;
    justify-self: center;
  }

  /* Menos espaço entre os links dentro de cada nav */
  .site-footer__col ul { gap: var(--sp-2); }

  /* Links do menu ~50% maiores no mobile pro touch ficar mais confortável */
  .site-footer__col a { font-size: calc(var(--fs-100) * 1.5); }

  .site-footer__bottom .site-footer__inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: var(--sp-4);
  }

  .site-footer__legal { justify-self: center; }
}