:root {
  --navy: #001335;
  --navy-surface: #0a1e3d;
  --navy-card: #0d2347;
  --green: #00ac7c;
  --green-light: #7dd3a8;
  --white: #ffffff;
  --gray-50: #fbfcfd;
  --gray-100: #f4f6f9;
  --gray-200: #e8ebf0;
  --gray-300: #d4d9e1;
  --gray-400: #b0b8c1;
  --gray-600: #6b7280;
  --gray-700: #475467;
  --gray-800: #1f2937;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--navy);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--green);
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Evita estouro horizontal em mobile, palavras longas (URLs, e-mails) quebram. */
html,
body {
  width: 100%;
  max-width: 100vw;
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

body {
  word-wrap: break-word;
  overflow-wrap: break-word;
  position: relative;
}

/* Confina sections para nunca estourar a viewport (defesa contra qualquer filho largo) */
main,
section,
header,
footer,
.container {
  max-width: 100vw;
}

/* Limites defensivos para conteudo e flex children, evitam estouro horizontal */
img,
svg,
video,
iframe,
table {
  max-width: 100%;
}

pre {
  max-width: 100%;
  overflow-x: auto;
}

.site-header .container > *,
.site-nav > * {
  min-width: 0;
}

/* ===== Header ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .container {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 24px;
}

.brand {
  grid-column: 1;
  grid-row: 1;
}

.site-header .menu-toggle {
  grid-column: 3;
  grid-row: 1;
}

.site-header .site-nav {
  grid-column: 2;
  grid-row: 1;
}

.site-header .theme-toggle {
  grid-column: 4;
  grid-row: 1;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img {
  display: block;
  height: 28px;
  width: auto;
}

.brand .logo-dark {
  display: none;
}

[data-theme="dark"] .brand .logo-light {
  display: none;
}

[data-theme="dark"] .brand .logo-dark {
  display: block;
}

.theme-toggle,
.menu-toggle {
  background: transparent;
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--gray-600);
  transition: color 120ms ease, border-color 120ms ease, background 120ms ease;
  padding: 0;
  flex-shrink: 0;
}

.menu-toggle {
  display: none;
}

.menu-toggle .icon-close {
  display: none;
}

.site-header.is-open .menu-toggle .icon-menu {
  display: none;
}

.site-header.is-open .menu-toggle .icon-close {
  display: block;
}

.menu-toggle:hover {
  color: var(--navy);
  border-color: var(--navy);
  background: var(--gray-50);
}

[data-theme="dark"] .menu-toggle {
  border-color: rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.75);
}

[data-theme="dark"] .menu-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  border-color: var(--green-light);
}

.theme-toggle:hover {
  color: var(--navy);
  border-color: var(--navy);
  background: var(--gray-50);
}

.theme-toggle .icon {
  display: block;
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

.site-nav {
  display: flex;
  gap: 24px;
  font-size: 14px;
  justify-content: flex-end;
  flex-wrap: wrap;
  min-width: 0;
}

.site-nav a {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
}

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

/* ===== Hero ===== */
.hero {
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-surface) 100%);
  color: var(--white);
  padding: 72px 0 48px;
}

.hero .eyebrow {
  color: var(--green-light);
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
  margin: 0 0 16px;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  margin: 0 0 16px;
  font-weight: 700;
  max-width: 780px;
}

.hero .lead {
  font-size: 17px;
  max-width: 720px;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.hero .lead a {
  color: var(--green-light);
}

/* ===== Cards ===== */
.cards {
  padding: 48px 0 96px;
  background: var(--gray-50);
}

.cards .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 28px;
  text-decoration: none;
  color: var(--gray-800);
  transition: border-color 120ms ease, transform 120ms ease, box-shadow 120ms ease;
}

.card:hover {
  border-color: var(--green);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 19, 53, 0.08);
}

.card-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}

.card h2 {
  font-size: 20px;
  margin: 0 0 8px;
  color: var(--navy);
  line-height: 1.3;
}

.card p {
  font-size: 14px;
  color: var(--gray-700);
  margin: 0 0 20px;
  flex-grow: 1;
}

.card-cta {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  display: inline-flex;
  align-items: center;
}

.card-cta::after {
  content: "→";
  display: inline-block;
  margin-left: 6px;
  transition: transform 200ms ease;
}

.card:hover .card-cta {
  color: var(--green);
}

.card:hover .card-cta::after {
  transform: translateX(4px);
}

/* ===== Doc page ===== */
.doc-page {
  background: var(--white);
}

.doc-toolbar {
  padding: 24px 0 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-600);
  text-decoration: none;
  padding: 8px 14px;
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  background: var(--gray-50);
  transition: all 120ms ease;
}

.back-link:hover {
  color: var(--navy);
  border-color: var(--navy);
  background: var(--white);
}

.doc {
  padding: 32px 0 96px;
}

.doc article {
  background: var(--white);
}

.doc h1 {
  font-size: clamp(26px, 3.5vw, 36px);
  line-height: 1.2;
  margin: 0 0 12px;
  color: var(--navy);
  font-weight: 700;
}

.doc h2 {
  font-size: 22px;
  margin: 40px 0 12px;
  color: var(--navy);
  line-height: 1.3;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--gray-200);
}

.doc h3 {
  font-size: 17px;
  margin: 28px 0 8px;
  color: var(--gray-800);
  line-height: 1.4;
}

.doc h4 {
  font-size: 15px;
  margin: 20px 0 6px;
  color: var(--gray-800);
}

.doc p {
  font-size: 15px;
  color: var(--gray-800);
  margin: 0 0 14px;
}

.doc strong {
  color: var(--navy);
}

.doc ul,
.doc ol {
  font-size: 15px;
  color: var(--gray-800);
  padding-left: 22px;
  margin: 0 0 16px;
}

.doc li {
  margin-bottom: 6px;
}

.doc blockquote {
  margin: 16px 0;
  padding: 12px 18px;
  background: var(--gray-100);
  border-left: 3px solid var(--green);
  color: var(--gray-700);
  border-radius: 4px;
}

.doc hr {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 32px 0;
}

.doc code {
  background: var(--gray-100);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.92em;
  color: var(--navy);
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}

/* Em mobile, tabela vira bloco rolavel horizontalmente, sem quebrar conteudo. */
@media (max-width: 600px) {
  .doc table {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
  }

  [data-theme="dark"] .doc table {
    border-color: rgba(255, 255, 255, 0.1);
  }
}

.doc th,
.doc td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
}

.doc th {
  background: var(--gray-100);
  font-weight: 600;
  color: var(--navy);
}

.doc a {
  color: var(--green);
  word-break: break-word;
}

.doc a:hover {
  color: var(--navy);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.75);
  padding: 32px 0;
  font-size: 13px;
}

.site-footer p {
  margin: 0 0 6px;
}

.site-footer a {
  color: var(--green-light);
}

.site-footer a:hover {
  color: var(--white);
}

/* ===== Dark mode ===== */
[data-theme="dark"] {
  color-scheme: dark;
}

[data-theme="dark"] body {
  background: #050d24;
  color: #e2e8f0;
}

[data-theme="dark"] a {
  color: var(--green-light);
}

[data-theme="dark"] a:hover {
  color: var(--white);
}

[data-theme="dark"] .site-header {
  background: #0f1f3d;
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .site-nav a {
  color: rgba(255, 255, 255, 0.75);
}

[data-theme="dark"] .site-nav a:hover {
  color: var(--white);
}

[data-theme="dark"] .theme-toggle {
  border-color: rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.75);
}

[data-theme="dark"] .theme-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  border-color: var(--green-light);
}

[data-theme="dark"] .hero {
  background: linear-gradient(180deg, #050d24 0%, #0a1e3d 100%);
}

[data-theme="dark"] .cards {
  background: #050d24;
}

[data-theme="dark"] .card {
  background: #0d1f42;
  border-color: rgba(255, 255, 255, 0.08);
  color: #e2e8f0;
}

[data-theme="dark"] .card:hover {
  border-color: var(--green);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .card h2 {
  color: var(--white);
}

[data-theme="dark"] .card p {
  color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .card-cta {
  color: var(--green-light);
}

[data-theme="dark"] .card:hover .card-cta {
  color: var(--white);
}

[data-theme="dark"] .doc-page {
  background: #050d24;
}

[data-theme="dark"] .back-link {
  color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}

[data-theme="dark"] .back-link:hover {
  color: var(--white);
  border-color: var(--green-light);
  background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .doc article {
  background: transparent;
}

[data-theme="dark"] .doc h1,
[data-theme="dark"] .doc h2 {
  color: var(--white);
}

[data-theme="dark"] .doc h3,
[data-theme="dark"] .doc h4 {
  color: rgba(255, 255, 255, 0.92);
}

[data-theme="dark"] .doc h2 {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .doc p,
[data-theme="dark"] .doc ul,
[data-theme="dark"] .doc ol {
  color: rgba(255, 255, 255, 0.82);
}

[data-theme="dark"] .doc strong {
  color: var(--white);
}

[data-theme="dark"] .doc a {
  color: var(--green-light);
}

[data-theme="dark"] .doc a:hover {
  color: var(--white);
}

[data-theme="dark"] .doc blockquote {
  background: rgba(255, 255, 255, 0.04);
  border-left-color: var(--green);
  color: rgba(255, 255, 255, 0.78);
}

[data-theme="dark"] .doc hr {
  border-top-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .doc code {
  background: rgba(255, 255, 255, 0.08);
  color: var(--green-light);
}

[data-theme="dark"] .doc table {
  color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .doc th {
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
}

[data-theme="dark"] .doc th,
[data-theme="dark"] .doc td {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .site-footer {
  background: #02071a;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== Responsive ===== */

/* Tablet intermediario, 601 a 900px */
@media (max-width: 900px) {
  .container {
    padding: 0 20px;
  }

  .hero {
    padding: 60px 0 40px;
  }

  .cards .container {
    gap: 16px;
  }

  .doc h2 {
    margin-top: 32px;
  }
}

/* Mobile, 320 a 600px */
@media (max-width: 600px) {
  .container {
    padding: 0 16px;
  }

  /* Header mobile: linha 1 = brand + menu + theme toggle. Nav vira dropdown linha 2. */
  .site-header {
    padding: 12px 0;
  }

  .site-header .container {
    grid-template-columns: auto 1fr auto auto;
    grid-template-rows: auto auto;
    column-gap: 8px;
    row-gap: 0;
  }

  .brand img {
    height: 24px;
  }

  .site-header .theme-toggle {
    grid-column: 3;
    grid-row: 1;
    width: 44px;
    height: 44px;
  }

  .site-header .menu-toggle {
    display: inline-flex;
    grid-column: 4;
    grid-row: 1;
    width: 44px;
    height: 44px;
  }

  /* Nav escondida por default no mobile, abre como dropdown via .is-open */
  .site-header .site-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 2px;
    padding: 0;
    margin: 0;
    border-top: 0 solid var(--gray-200);
    max-height: 0;
    overflow: hidden;
    transition: max-height 200ms ease, padding 200ms ease, border-top-width 200ms ease;
  }

  .site-header.is-open .site-nav {
    max-height: 240px;
    padding: 8px 0 4px;
    border-top-width: 1px;
    margin-top: 12px;
  }

  .site-nav a {
    display: block;
    width: 100%;
    padding: 12px 4px;
    font-size: 15px;
    border-radius: 6px;
    font-weight: 500;
  }

  .site-nav a:hover,
  .site-nav a:active {
    background: var(--gray-100);
    color: var(--navy);
  }

  [data-theme="dark"] .site-header .site-nav {
    border-top-color: rgba(255, 255, 255, 0.08);
  }

  [data-theme="dark"] .site-nav a:hover,
  [data-theme="dark"] .site-nav a:active {
    background: rgba(255, 255, 255, 0.06);
    color: var(--white);
  }

  /* Hero: padding mais enxuto, lead com tamanho confortavel. */
  .hero {
    padding: 44px 0 32px;
  }

  .hero .eyebrow {
    font-size: 12px;
    letter-spacing: 1.2px;
  }

  .hero h1 {
    font-size: clamp(24px, 7vw, 30px);
    line-height: 1.25;
  }

  .hero .lead {
    font-size: 15.5px;
    line-height: 1.55;
  }

  /* Cards empilhados, padding e tipografia ajustados. */
  .cards {
    padding: 28px 0 56px;
  }

  .cards .container {
    gap: 14px;
  }

  .card {
    padding: 22px 20px;
    border-radius: 10px;
  }

  .card:hover {
    transform: none;
  }

  .card h2 {
    font-size: 18px;
  }

  .card p {
    margin-bottom: 16px;
  }

  /* Doc page, leitura longa em tela pequena. */
  .doc-toolbar {
    padding: 16px 0 0;
  }

  .back-link {
    padding: 10px 16px;
    font-size: 13px;
    min-height: 40px;
  }

  .doc {
    padding: 20px 0 56px;
  }

  .doc h1 {
    font-size: clamp(22px, 6.5vw, 28px);
    line-height: 1.25;
    margin-bottom: 16px;
  }

  .doc h2 {
    font-size: 19px;
    margin: 32px 0 10px;
  }

  .doc h3 {
    font-size: 16px;
    margin: 24px 0 8px;
  }

  .doc h4 {
    font-size: 14.5px;
  }

  .doc p,
  .doc ul,
  .doc ol,
  .doc li {
    font-size: 15.5px;
    line-height: 1.65;
  }

  .doc p {
    margin-bottom: 14px;
  }

  .doc ul,
  .doc ol {
    padding-left: 20px;
  }

  .doc li {
    margin-bottom: 8px;
  }

  .doc blockquote {
    padding: 12px 14px;
    margin: 14px 0;
  }

  .doc hr {
    margin: 24px 0;
  }

  /* Article do doc nao deve causar scroll horizontal externo, tabelas ja tem scroll interno. */
  .doc article,
  .doc {
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Tabela compacta, ja envolvida por .table-wrap para scroll horizontal. */
  .doc table {
    font-size: 13.5px;
  }

  .doc th,
  .doc td {
    padding: 8px 10px;
  }

  /* Footer compacto, copy quebra confortavel. */
  .site-footer {
    padding: 24px 0;
    font-size: 12.5px;
    line-height: 1.55;
  }

  .site-footer p {
    margin-bottom: 8px;
  }
}

/* Mobile pequeno, 320 a 380px */
@media (max-width: 380px) {
  .site-nav {
    gap: 12px;
    font-size: 12.5px;
  }

  .hero h1 {
    font-size: 22px;
  }

  .card {
    padding: 20px 18px;
  }
}

/* ===== Acessibilidade, respeita preferencia de menos animacao ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}