/* ============================================================
   BG5 COMPANY — LAYOUT: containers, ritmo de seção, header, footer
   ============================================================ */

/* ---------------- Containers ---------------- */
.container {
  width: 100%;
  max-width: var(--w-base);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide   { max-width: var(--w-wide); }
.container--narrow { max-width: var(--w-narrow); }

.measure      { max-width: var(--w-text); }
.measure-wide { max-width: 78ch; }

/* ---------------- Ritmo de seção ---------------- */
.section {
  position: relative;
  z-index: var(--z-base);
  padding-block: var(--sp-section);
}
.section--tight { padding-block: clamp(3rem, 2rem + 4vw, 5.5rem); }
.section--flush-top { padding-top: 0; }

/* Filete dourado que separa capítulos */
.section--ruled { border-top: 1px solid transparent; border-image: var(--g-hairline) 1; }

/* ---------------- Cabeçalho de seção ---------------- */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  margin-bottom: clamp(2.5rem, 1.6rem + 3vw, 4.5rem);
}
.section-head--center { align-items: center; text-align: center; }
.section-head--center .section-head__lead { margin-inline: auto; }

.section-head__title { max-width: 20ch; }
.section-head--center .section-head__title { max-width: 24ch; }

.section-head__lead {
  max-width: 56ch;
  font-size: var(--fs-lead);
  line-height: 1.62;
  color: var(--c-mist);
}

/* Eyebrow — o rótulo "PRESENÇA LOCAL" das artes do Instagram */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--f-sans);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--c-gold);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--c-gold);
  opacity: 0.55;
  flex: none;
}
.eyebrow--bare::before { display: none; }
.section-head--center .eyebrow::after {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--c-gold);
  opacity: 0.55;
  flex: none;
}

/* ---------------- Grids ---------------- */
.grid { display: grid; gap: var(--sp-6); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(2rem, 1rem + 4vw, 5rem); }
.grid--sidebar { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 1rem + 4vw, 5rem); }

@media (max-width: 960px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--split, .grid--sidebar { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .grid--2, .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

/* ---------------- Indicador de progresso de leitura ---------------- */
.progress {
  position: fixed;
  top: 0; left: 0;
  z-index: calc(var(--z-header) + 1);
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--g-gold);
  will-change: transform;
}

/* ---------------- Header ---------------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-header);
  height: var(--h-header);
  display: flex;
  align-items: center;
  transition:
    height var(--dur-2) var(--ease),
    background-color var(--dur-2) var(--ease),
    border-color var(--dur-2) var(--ease);
  border-bottom: 1px solid transparent;
}

.header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background: rgba(5, 8, 15, 0.86);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  transition: opacity var(--dur-2) var(--ease);
}

.header.is-compact { height: var(--h-header-compact); border-bottom-color: var(--c-line); }
.header.is-compact::before { opacity: 1; }

.header__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  width: 100%;
  max-width: var(--w-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Padding transparente eleva a área de toque a 44px sem alterar o desenho */
.header__brand { margin-right: auto; padding-block: 3px; }

/* Nav desktop */
.nav { display: flex; align-items: center; gap: clamp(1rem, 0.4rem + 1.4vw, 2rem); }

.nav__link {
  position: relative;
  padding-block: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-mist);
  white-space: nowrap;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: 100% 50%;
  transition: transform var(--dur-2) var(--ease-expo);
}
.nav__link:hover { color: var(--c-ice); }
.nav__link:hover::after,
.nav__link[aria-current]::after { transform: scaleX(1); transform-origin: 0 50%; }
.nav__link[aria-current] { color: var(--c-ice); }

/* ---------------- Destaque de SERVIÇOS no header ---------------- */
.nav__link--feature {
  padding: 0.5em 1em;
  border: 1px solid var(--c-line-gold);
  border-radius: var(--r-full);
  color: var(--c-gold);
  transition: background-color var(--dur-2) var(--ease), color var(--dur-2) var(--ease),
              border-color var(--dur-2) var(--ease);
}
/* O pill substitui o sublinhado — dois indicadores juntos poluiriam. */
.nav__link--feature::after { display: none; }
.nav__link--feature:hover { background: rgba(201, 169, 97, 0.1); color: var(--c-gold-hi); }
.nav__link--feature[aria-current] {
  background: rgba(201, 169, 97, 0.16);
  border-color: var(--c-gold);
  color: var(--c-gold-hi);
}

.menu__link--feature { color: var(--c-gold); }
.menu__link--feature span { color: var(--c-gold-hi); }

.header__cta { flex: none; }

/* Botão hambúrguer */
.burger {
  display: none;
  position: relative;
  flex: none;
  width: 44px; height: 44px;
  margin-right: calc(var(--sp-2) * -1);
  border-radius: var(--r-sm);
}
.burger__bar {
  position: absolute;
  left: 50%; top: 50%;
  width: 22px; height: 1.5px;
  background: var(--c-ice);
  transition: transform var(--dur-2) var(--ease-expo), opacity var(--dur-1) linear;
}
.burger__bar:nth-child(1) { transform: translate(-50%, -6px); }
.burger__bar:nth-child(2) { transform: translate(-50%, 0); }
.burger__bar:nth-child(3) { transform: translate(-50%, 6px); }

.burger[aria-expanded="true"] .burger__bar:nth-child(1) { transform: translate(-50%, 0) rotate(45deg); }
.burger[aria-expanded="true"] .burger__bar:nth-child(2) { opacity: 0; transform: translate(-50%, 0) scaleX(0.3); }
.burger[aria-expanded="true"] .burger__bar:nth-child(3) { transform: translate(-50%, 0) rotate(-45deg); }

/* Atalho de Serviços no header mobile: a página comercial não pode depender
   de abrir o menu para ser encontrada. Só existe onde a nav desktop some. */
.header__shortcut { display: none; }

@media (max-width: 900px) {
  .header .nav, .header .header__cta { display: none; }
  .burger { display: block; }

  .header__inner { gap: var(--sp-3); }

  .header__shortcut {
    display: inline-flex;
    align-items: center;
    flex: none;
    min-height: 40px;
    padding: 0 0.95em;
    border: 1px solid var(--c-line-gold);
    border-radius: var(--r-full);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: var(--ls-caps);
    text-transform: uppercase;
    color: var(--c-gold);
    white-space: nowrap;
    transition: background-color var(--dur-2) var(--ease), color var(--dur-2) var(--ease);
  }
  .header__shortcut:hover { background: rgba(201, 169, 97, 0.1); color: var(--c-gold-hi); }
  .header__shortcut[aria-current] {
    background: rgba(201, 169, 97, 0.16);
    color: var(--c-gold-hi);
  }
}


/* ---------------- Menu mobile ---------------- */
.menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  display: flex;
  flex-direction: column;
  padding: calc(var(--h-header) + var(--sp-7)) var(--gutter) var(--sp-8);
  background: var(--c-deep);
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--dur-2) var(--ease), visibility 0s linear var(--dur-2);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.menu.is-open { visibility: visible; opacity: 1; transition-delay: 0s; }

.menu__nav { display: flex; flex-direction: column; }

.menu__link {
  display: flex;
  align-items: baseline;
  gap: var(--sp-4);
  padding-block: var(--sp-4);
  border-bottom: 1px solid var(--c-line);
  font-family: var(--f-display);
  font-size: clamp(1.6rem, 1.2rem + 2vw, 2.2rem);
  color: var(--c-ice);
}
/* O estado base é o VISÍVEL, e a animação só acrescenta a entrada.
   Com `backwards`, o estado inicial vale apenas durante o atraso.
   Se a animação não rodar — economia de bateria no Android, WebView antiga,
   política de movimento do sistema — o item continua legível, em vez de
   ficar preso em opacity: 0 e deixar o menu vazio. */
.menu.is-open .menu__link {
  animation: menu-in var(--dur-3) var(--ease-expo) backwards;
  animation-delay: calc(60ms * var(--i, 0) + 90ms);
}
.menu__link span {
  font-family: var(--f-sans);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--c-gold);
}

@keyframes menu-in {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.menu__footer { margin-top: auto; padding-top: var(--sp-7); display: grid; gap: var(--sp-4); }

/* ---------------- Footer ---------------- */
.footer {
  position: relative;
  z-index: var(--z-base);
  padding-top: clamp(3.5rem, 2rem + 5vw, 6rem);
  padding-bottom: var(--sp-7);
  background: var(--c-deep);
  border-top: 1px solid var(--c-line-gold);
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: clamp(2rem, 1rem + 3vw, 4rem);
  padding-bottom: var(--sp-8);
}

.footer__brand { display: grid; gap: var(--sp-5); align-content: start; }
.footer__blurb { max-width: 40ch; font-size: var(--fs-sm); color: var(--c-mute); }

.footer__col-title {
  margin-bottom: var(--sp-5);
  font-family: var(--f-sans);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--c-gold);
}

.footer__list { display: grid; gap: var(--sp-2); }
.footer__list a, .footer__list span {
  display: inline-block;
  padding-block: 5px;
  font-size: var(--fs-sm);
  color: var(--c-mute);
}
.footer__list a:hover { color: var(--c-gold); }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--c-line);
  font-size: var(--fs-xs);
  color: var(--c-faint);
}
.footer__bottom p { margin: 0; }

@media (max-width: 900px) {
  .footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer__top { grid-template-columns: minmax(0, 1fr); }
}

/* ---------------- Voltar ao topo ---------------- */
.to-top {
  position: fixed;
  right: var(--gutter);
  bottom: var(--gutter);
  z-index: var(--z-raised);
  display: grid;
  place-items: center;
  width: 46px; height: 46px;
  border: 1px solid var(--c-line-gold);
  border-radius: var(--r-full);
  background: var(--c-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--c-gold);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--dur-2) var(--ease), transform var(--dur-2) var(--ease),
              visibility 0s linear var(--dur-2), background-color var(--dur-1) var(--ease);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); transition-delay: 0s; }
.to-top:hover { background: var(--c-navy-hi); }
.to-top svg { width: 16px; height: 16px; }