/* ==========================================================================
   LAYOUT: container, ritmo de seções, topo, gaveta e rodapé
   ========================================================================== */

.container {
  width: 100%;
  max-width: calc(var(--max) + 2 * var(--margin));
  margin-inline: auto;
  padding-inline: var(--margin);
}

main > section {
  padding-block: var(--section);
}

.section-head {
  display: grid;
  gap: 1rem;
  max-width: 42rem;
  margin-bottom: clamp(2.5rem, 2rem + 2vw, 3.5rem);
}

/* ---- Topo ---- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  border-bottom: 1px solid transparent;
  transition: background-color var(--t-ui) ease, border-color var(--t-ui) ease;
}

/* O desfoque fica no ::before: backdrop-filter no próprio header faria dele
   o bloco de contenção da gaveta (position: fixed) e ela encolheria para 56px. */
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(11, 11, 12, 0.78);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  opacity: 0;
  transition: opacity var(--t-ui) ease;
}

.site-header.scrolled::before {
  opacity: 1;
}

.site-header.scrolled,
.site-header.menu-open {
  border-bottom-color: var(--line);
}

.site-header.menu-open {
  background: var(--bg);
}

.site-header.menu-open::before {
  opacity: 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: var(--header-h);
}

.nav-logo {
  display: block;
  flex: none;
  padding-block: 0.25rem;
  margin-right: auto;
}

.logo {
  display: block;
  height: 2.25rem;
  width: auto;
  aspect-ratio: 132 / 48;
}

.logo-box { fill: var(--surface); stroke: var(--line-strong); }
.logo-ink { stroke: var(--ink); }
.logo-accent { stroke: var(--accent); }
.logo-ink-fill { fill: var(--ink); }
.logo-accent-fill { fill: var(--accent); }
.logo-hole { fill: var(--surface); }

.nav-links {
  display: none;
}

.nav-inner .nav-cta {
  display: none;
}

@media (min-width: 480px) {
  .nav-inner .nav-cta {
    display: inline-flex;
  }
}

.nav-toggle {
  display: grid;
  place-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--t-ui) var(--ease-out);
}

.nav-toggle[aria-expanded='true'] .nav-toggle-bar:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] .nav-toggle-bar:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

.nav-drawer {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: var(--z-drawer);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.5rem var(--margin) max(2rem, env(safe-area-inset-bottom));
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--t-ui) var(--ease-out), transform var(--t-ui) var(--ease-out), visibility 0s linear var(--t-ui);
}

.nav-drawer.open {
  visibility: visible;
  opacity: 1;
  transform: none;
  transition: opacity var(--t-ui) var(--ease-out), transform var(--t-ui) var(--ease-out), visibility 0s;
}

@media (prefers-reduced-motion: reduce) {
  .nav-drawer {
    transform: none;
  }
}

.nav-drawer-links {
  display: grid;
}

.nav-drawer-links a {
  display: block;
  padding-block: 0.85rem;
  font-size: 1.375rem;
  font-weight: 500;
  border-bottom: 1px solid var(--line);
}

.nav-drawer .btn {
  width: 100%;
  justify-content: center;
}

@media (min-width: 1024px) {
  .nav-logo {
    margin-right: 0;
  }

  .nav-links {
    display: flex;
    gap: 0.25rem;
    margin-inline: auto;
    font-size: var(--step-small);
  }

  .nav-links a {
    display: block;
    padding: 0.45rem 0.8rem;
    border-radius: var(--radius-pill);
    color: var(--ink-2);
    transition: color var(--t-hover) ease, background-color var(--t-hover) ease;
  }

  .nav-toggle,
  .nav-drawer {
    display: none;
  }
}

@media (hover: hover) and (pointer: fine) {
  .nav-links a:hover {
    color: var(--ink);
    background: var(--surface-2);
  }
}

/* ---- Rodapé ---- */

.site-footer {
  border-top: 1px solid var(--line);
  font-size: var(--step-small);
  color: var(--muted);
}

.footer-inner {
  display: grid;
  gap: 2.5rem;
  padding-block: 3.5rem 2.5rem;
}

.footer-brand {
  display: grid;
  align-content: start;
  gap: 1rem;
  max-width: 22rem;
  color: var(--ink-2);
}

.footer-brand .logo {
  height: 2.75rem;
}

.footer-heading {
  margin-bottom: 0.75rem;
  color: var(--ink);
  font-weight: 500;
}

.footer-col ul {
  display: grid;
  gap: 0.5rem;
}

.footer-col a {
  transition: color var(--t-hover) ease;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding-block: 1.25rem 2rem;
  background: linear-gradient(var(--line), var(--line)) top / 100% 1px no-repeat;
  background-origin: content-box;
  background-clip: content-box;
}

@media (hover: hover) and (pointer: fine) {
  .footer-col a:hover {
    color: var(--ink);
  }
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}