/*
 * Portal do Desenvolvedor FOX NF-e — folha de estilo autocontida.
 * Sem CDN, sem framework, sem chamadas remotas. Identidade herdada de
 * landing/tailwind.config.js (bg #09090B, surface #0D1117, brand #A78BFA).
 * As famílias tipográficas usam fallback de sistema: nenhuma fonte é baixada.
 */

:root {
  --bg: #09090B;
  --surface: #0D1117;
  --surface-2: #12161F;
  --border: #1F2733;
  --text-primary: #E2E8F0;
  --text-secondary: #94A3B8;
  --brand: #A78BFA;
  --brand-glow: #C4B5FD;
  --ok: #34D399;
  --warn: #FBBF24;
  --danger: #F87171;

  --font-heading: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Code", "Liberation Mono", monospace;

  --radius: 12px;
  --radius-sm: 8px;
  --nav-w: 268px;
  --maxw: 820px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

/* ── Skip link (acessibilidade) ─────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--brand);
  color: #0B0B12;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 100;
  font-weight: 700;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ── Foco visível global ────────────────────────────────────────────── */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--brand-glow);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Layout ─────────────────────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--nav-w);
  flex: 0 0 var(--nav-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 18px 48px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 18px;
  color: var(--text-primary);
  text-decoration: none;
  margin-bottom: 4px;
}
.brand .dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--brand-glow), var(--brand));
  box-shadow: 0 0 12px rgba(167,139,250,.55);
}
.brand small { display:block; font-family: var(--font-body); font-weight:400; font-size:12px; color: var(--text-secondary); letter-spacing: normal; }

.search {
  margin: 18px 0 8px;
}
.search input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-body);
}
.search input::placeholder { color: var(--text-secondary); }

.nav-results {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  font-size: 13.5px;
}
.nav-results li { margin: 0; }
.nav-results a {
  display: block;
  padding: 7px 10px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
}
.nav-results a:hover, .nav-results a:focus-visible { background: var(--surface-2); color: var(--text-primary); }
.nav-results .hit-section { color: var(--brand); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; display:block; }
.nav-empty { color: var(--text-secondary); font-size: 13px; padding: 8px 10px; font-style: italic; }

nav.toc { margin-top: 8px; }
nav.toc > ul { list-style: none; margin: 0; padding: 0; }
nav.toc > ul > li > a {
  display: block;
  padding: 9px 10px;
  min-height: 40px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  font-size: 14.5px;
  font-weight: 600;
}
nav.toc a:hover { background: var(--surface-2); color: var(--text-primary); }
nav.toc a.active { color: var(--brand); background: rgba(167,139,250,.10); }
nav.toc .sub { list-style:none; margin: 2px 0 8px; padding: 0 0 0 12px; }
nav.toc .sub a { display:block; padding: 6px 10px; font-size: 13px; font-weight: 400; color: var(--text-secondary); text-decoration:none; border-radius:6px; border-left: 1px solid var(--border); }
nav.toc .sub a:hover { color: var(--text-primary); border-left-color: var(--brand); }

/* ── Conteúdo ───────────────────────────────────────────────────────── */
main {
  flex: 1 1 auto;
  min-width: 0;
  padding: 40px clamp(20px, 5vw, 64px) 96px;
}
.content { max-width: var(--maxw); margin: 0 auto; }

h1, h2, h3 {
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--text-primary);
}
h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin: 0 0 8px; }
h2 { font-size: clamp(22px, 3vw, 28px); font-weight: 700; margin: 56px 0 12px; padding-top: 12px; scroll-margin-top: 24px; }
h3 { font-size: 18px; font-weight: 700; margin: 32px 0 8px; scroll-margin-top: 24px; }

.lead { font-size: 18px; color: var(--text-secondary); margin: 0 0 8px; }

p, li { color: var(--text-primary); }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-color: var(--brand-glow); }

.anchor {
  margin-left: 8px;
  color: var(--text-secondary);
  font-size: .7em;
  opacity: 0;
  text-decoration: none;
}
h2:hover .anchor, h3:hover .anchor, .anchor:focus-visible { opacity: 1; }

/* Bloco "Resposta primeiro" (answer-first) */
.answer {
  background: linear-gradient(180deg, rgba(167,139,250,.10), rgba(167,139,250,.03));
  border: 1px solid rgba(167,139,250,.28);
  border-left: 3px solid var(--brand);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin: 16px 0 8px;
}
.answer p { margin: 0; }

/* Avisos */
.callout {
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin: 16px 0;
  background: var(--surface);
  font-size: 14.5px;
}
.callout.warn { border-left-color: var(--warn); }
.callout.danger { border-left-color: var(--danger); }
.callout.ok { border-left-color: var(--ok); }
.callout strong { color: var(--text-primary); }

/* Tabelas */
.table-wrap { overflow-x: auto; margin: 16px 0; border: 1px solid var(--border); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--surface); color: var(--text-primary); font-weight: 700; font-family: var(--font-heading); letter-spacing: -0.01em; }
tr:last-child td { border-bottom: none; }
td code, th code { white-space: nowrap; }

/* Código */
code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
  color: var(--brand-glow);
}
.code {
  position: relative;
  margin: 16px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 12px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}
.code pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
}
.code pre code { background: none; border: none; padding: 0; color: inherit; font-size: inherit; white-space: pre; }
.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 4px 10px;
  min-height: 28px;
  font-size: 12px;
  cursor: pointer;
  font-family: var(--font-body);
}
.copy-btn:hover { color: var(--text-primary); border-color: var(--brand); }
.copy-btn.copied { color: var(--ok); border-color: var(--ok); }
.copy-btn.copy-failed { color: var(--danger); border-color: var(--danger); }

/* Downloads de exemplos executáveis */
.dl-list { list-style: none; padding: 0; margin: 16px 0; display: grid; gap: 10px; }
.dl-list a {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px; min-height: 44px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--surface); color: var(--text-primary);
  text-decoration: none; font-weight: 600;
}
.dl-list a:hover, .dl-list a:focus-visible { border-color: var(--brand); background: var(--surface-2); }
.dl-list .dl-lang { color: var(--brand); font-family: var(--font-mono, monospace); font-size: 13px; min-width: 64px; }
.dl-list .dl-note { color: var(--text-secondary); font-weight: 400; font-size: 13px; }

/* Tabs de linguagem */
.tabs { display: flex; gap: 6px; margin: 16px 0 0; flex-wrap: wrap; }
.tab-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 8px 14px;
  min-height: 40px;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
}
.tab-btn[aria-selected="true"] { color: var(--brand); border-color: var(--brand); background: rgba(167,139,250,.08); }
.tab-panel[hidden] { display: none; }

/* Badges de estado */
.badge { display:inline-block; font-size: 12px; font-weight: 700; padding: 2px 9px; border-radius: 999px; border: 1px solid; letter-spacing: .01em; }
.badge.review { color: var(--warn); border-color: rgba(251,191,36,.5); background: rgba(251,191,36,.08); }
.badge.ready { color: var(--ok); border-color: rgba(52,211,153,.5); background: rgba(52,211,153,.08); }
.badge.none { color: var(--text-secondary); border-color: var(--border); background: var(--surface); }

hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

footer.site {
  max-width: var(--maxw);
  margin: 48px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 13px;
}

/* Botão mobile de menu */
.menu-toggle {
  display: none;
  position: fixed;
  top: 12px; left: 12px;
  z-index: 60;
  width: 44px; height: 44px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
}

/* ── Responsivo ─────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .menu-toggle { display: flex; align-items: center; justify-content: center; }
  .layout { display: block; }
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform .2s ease;
    z-index: 50;
    width: min(86vw, 320px);
    flex-basis: auto;
  }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 40px rgba(0,0,0,.6); }
  main { padding: 64px 20px 80px; }
  h2 { margin-top: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar { transition: none; }
}