/* Estrutura: casca, cabeçalho, menu, barra inferior e rodapé. */

.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px) saturate(1.1);
  border-bottom: 1px solid var(--rule);
}

@supports not (backdrop-filter: blur(1px)) {
  .site-header {
    background: var(--paper);
  }
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--s-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  text-decoration: none;
  flex: none;
}

.brand-mark {
  width: 34px;
  height: 24px;
  color: var(--ink);
  flex: none;
}

.brand-word {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-name {
  font-family: var(--f-display);
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-name em {
  font-weight: 400;
  color: var(--accent);
  padding-inline: 1px;
}

.brand-sub {
  font-size: 0.62rem;
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 5px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-inline-start: auto;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 12px;
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 8px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-mid) var(--ease);
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: none;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: var(--ink-2);
  border-radius: var(--r-pill);
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.icon-button:hover {
  background: var(--paper-2);
  color: var(--ink);
}

.icon-button svg {
  width: 19px;
  height: 19px;
}

.theme-button .icon-moon {
  display: none;
}

html[data-theme="dark"] .theme-button .icon-sun {
  display: none;
}

html[data-theme="dark"] .theme-button .icon-moon {
  display: block;
}

.menu-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding-inline: 10px;
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: var(--track-mid);
  text-transform: uppercase;
}

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

/* menu — painel dropdown flutuante ancorado no header */
.menu {
  position: fixed;
  top: calc(var(--header-h) + 10px);
  left: var(--gutter);
  right: var(--gutter);
  z-index: 130;
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  border-radius: 16px;
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.55);
  display: grid;
  grid-template-rows: auto 1fr auto;
  max-height: min(540px, calc(100svh - var(--header-h) - 28px));
  overflow: hidden;
}

.menu[hidden] {
  display: none;
}

.menu-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-3) var(--s-4) var(--s-2);
}

.menu-head .brand-word,
.menu-head .brand-mark {
  display: none;
}

.menu-head::before {
  content: "Navegação";
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
  color: var(--ink-3);
}

.menu-body {
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 var(--s-3) var(--s-3);
}

.menu-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 4px;
  counter-reset: menu;
}

.menu-list a {
  counter-increment: menu;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 12px;
  font-family: var(--f-display);
  font-size: 1.06rem;
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.menu-list a:hover {
  background: color-mix(in srgb, var(--paper) 62%, transparent);
}

.menu-list a::before {
  content: counter(menu, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 0.66rem;
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

.menu-list a[aria-current="page"] {
  color: var(--accent);
  background: color-mix(in srgb, var(--paper) 62%, transparent);
}

.menu-foot {
  border-top: 1px solid var(--rule);
  padding: var(--s-3) var(--s-4) calc(var(--s-3) + env(safe-area-inset-bottom));
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-5);
  justify-content: space-between;
  font-size: var(--step--1);
  color: var(--ink-3);
}

/* barra inferior mobile */
.mobile-bar {
  display: none;
  position: fixed;
  inset: auto 0 0;
  z-index: 95;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--rule);
  padding-bottom: env(safe-area-inset-bottom);
}

.mobile-bar nav {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.mobile-bar a,
.mobile-bar button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: var(--bar-h);
  padding: 6px 2px;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  text-decoration: none;
}

.mobile-bar svg {
  width: 20px;
  height: 20px;
}

.mobile-bar a[aria-current="page"],
.mobile-bar button[aria-expanded="true"] {
  color: var(--accent);
}

.mobile-bar a[aria-current="page"] svg,
.mobile-bar button[aria-expanded="true"] svg {
  stroke-width: 1.9;
}

/* conteúdo */
.site-main {
  padding-top: var(--header-h);
  min-height: 70svh;
}

.view {
  padding-block: clamp(40px, 6vw, 88px) clamp(64px, 9vw, 128px);
}

.view:focus {
  outline: none;
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--s-5);
}

.page-grid > * {
  min-width: 0;
}

.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

.section {
  padding-block: clamp(40px, 6vw, 80px);
}

.section:first-child {
  border-top: 0;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: var(--s-5);
  margin-bottom: var(--s-6);
}

.section-head h2 {
  font-size: var(--step-3);
}

.section-head p {
  color: var(--ink-2);
  max-width: 48ch;
  margin-top: 8px;
}

.section-head .folio {
  padding-bottom: 6px;
}

/* rodapé */
.site-footer {
  border-top: 1px solid var(--rule);
  background: var(--paper-2);
  padding-block: clamp(40px, 6vw, 72px) var(--s-5);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: var(--s-6);
  padding-bottom: var(--s-7);
  border-bottom: 1px solid var(--rule);
}

.footer-brand .brand-name {
  font-size: 1.7rem;
}

.footer-brand p {
  margin-top: var(--s-4);
  max-width: 32ch;
  font-size: var(--step--1);
  color: var(--ink-2);
}

.footer-col h3 {
  font-family: var(--f-text);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: var(--s-3);
}

.footer-col ul {
  display: grid;
  gap: 2px;
}

.footer-col a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: var(--step--1);
  color: var(--ink-2);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-credit {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: center;
  font-size: 0.78rem;
  color: var(--ink-3);
}

.footer-credit a {
  color: var(--accent);
  text-decoration: none;
}

.footer-credit a:hover {
  text-decoration: underline;
}

@media (max-width: 1080px) {
  .site-nav {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }
}

@media (max-width: 720px) {
  .mobile-bar {
    display: block;
  }

  .site-main {
    padding-bottom: calc(var(--bar-h) + env(safe-area-inset-bottom));
  }

  .site-footer {
    padding-bottom: calc(var(--s-6) + env(safe-area-inset-bottom));
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--s-5);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .page-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--s-4);
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: var(--s-2);
  }

  .section-head .folio {
    order: -1;
    padding: 0;
  }
}

@media (max-width: 420px) {
  .brand-sub {
    display: none;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .menu-list {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .menu-list a {
    padding: 12px 12px;
  }

  .menu {
    left: 10px;
    right: 10px;
  }
}