:root {
  --bg-color: #fdfdfd;
  --text-color: #24292f;
  --header-bg: #1e293b;
  --header-text: #ffffff;
  --link-color: #0969da;
  --link-hover: #0550ae;
  --card-bg: #ffffff;
  --border-color: #d0d7de;
  --code-bg: #f6f8fa;
  --accent-color: #2ea043;
  --note-bg: #ddf4ff;
  --note-border: #54aeff;
  --warning-bg: #fff8c5;
  --warning-border: #d4a72c;
  --info-bg: #dafbe1;
  --info-border: #4ac26b;
}

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-header {
  background-color: var(--header-bg);
  color: var(--header-text);
  padding: 1rem 0;
}

.header-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-title a {
  color: #fff;
  text-decoration: none;
  font-size: 1.4rem;
  font-weight: 700;
}

.site-nav a {
  color: #e2e8f0;
  text-decoration: none;
  margin-left: 1.5rem;
  font-weight: 500;
  font-size: 1rem;
}

.site-nav a:hover {
  color: #fff;
  text-decoration: underline;
}

.container {
  max-width: 1440px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
  flex: 1;
  width: 100%;
}

.breadcrumbs {
  font-size: 0.9rem;
  color: #57606a;
  margin-bottom: 1.5rem;
}

.breadcrumbs a {
  color: var(--link-color);
  text-decoration: none;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  color: #1f2328;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

a {
  color: var(--link-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

p, ul, ol {
  margin-top: 0;
  margin-bottom: 1rem;
}

pre {
  background-color: var(--code-bg);
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.9rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  background-color: var(--code-bg);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

pre code {
  background-color: transparent;
  padding: 0;
}

/* Layout de Documentação com Sidebar */
.docs-layout {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
}

.docs-sidebar {
  width: 320px;
  flex-shrink: 0;
  position: sticky;
  top: 1.5rem;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.sidebar-section {
  margin-bottom: 1.5rem;
  border-bottom: 1px solid #e1e4e8;
  padding-bottom: 1rem;
}

.sidebar-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.sidebar-chapter-header {
  margin-bottom: 0.6rem;
}

.chapter-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: #1f2328;
  text-decoration: none;
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  transition: all 0.15s ease;
}

.chapter-link:hover, .chapter-link.active {
  background-color: #f6f8fa;
  color: var(--link-color);
}

.chapter-badge {
  background-color: #eef5ff;
  color: var(--link-color);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #d0d7de;
}

.sidebar-topic-items {
  list-style: none;
  padding-left: 0.5rem;
  margin: 0;
}

.sidebar-topic-entry {
  margin-bottom: 0.4rem;
}

.topic-link {
  display: block;
  font-size: 0.85rem;
  color: #444d56;
  text-decoration: none;
  padding: 0.3rem 0.5rem;
  border-radius: 5px;
  line-height: 1.35;
  transition: all 0.15s ease;
}

.topic-link:hover {
  background-color: #f6f8fa;
  color: var(--link-color);
}

.current-topic > .topic-link {
  font-weight: 700;
  color: var(--link-color);
  background-color: #f0f7ff;
}

.sidebar-lesson-subitems {
  list-style: none;
  padding-left: 1rem;
  margin: 0.4rem 0 0.5rem 0;
  border-left: 2px solid #e1e4e8;
}

.sidebar-lesson-subitems li {
  margin-bottom: 0.3rem;
}

.sidebar-lesson-subitems li a {
  display: flex;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: #57606a;
  text-decoration: none;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  line-height: 1.3;
}

.sidebar-lesson-subitems li a:hover {
  color: var(--link-color);
  background-color: #f6f8fa;
}

.sidebar-lesson-subitems li.active-lesson a {
  font-weight: 600;
  color: var(--link-color);
  background-color: #eef5ff;
}

.docs-content-wrapper {
  flex: 1;
  min-width: 0;
}

/* Tabela de Conteúdos (ToC) à Direita estilo MkDocs */
.docs-toc {
  width: 250px;
  flex-shrink: 0;
  position: sticky;
  top: 1.5rem;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  padding-left: 1.5rem;
  border-left: 1px solid var(--border-color);
  font-size: 0.85rem;
}

.toc-header {
  margin-bottom: 0.75rem;
}

.toc-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #6a737d;
  letter-spacing: 0.5px;
}

.toc-nav ul {
  list-style: none;
  padding-left: 0.75rem;
  margin: 0;
}

.toc-nav > ul {
  padding-left: 0;
}

.toc-nav li {
  margin-bottom: 0.4rem;
  line-height: 1.35;
}

.toc-nav a {
  color: #57606a;
  text-decoration: none;
  transition: color 0.15s ease;
}

.toc-nav a:hover {
  color: var(--link-color);
  text-decoration: underline;
}

/* Paginação de Aulas (Anterior / Próximo) */
.lesson-pagination {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.pagination-prev, .pagination-next {
  flex: 1;
  display: flex;
}

.pagination-prev {
  justify-content: flex-start;
}

.pagination-next {
  justify-content: flex-end;
}

.btn-pagination {
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1.35rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: #ffffff;
  text-decoration: none;
  transition: all 0.2s ease;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.pagination-next .btn-pagination {
  text-align: right;
  align-items: flex-end;
}

.pagination-prev .btn-pagination {
  text-align: left;
  align-items: flex-start;
}

.btn-pagination:hover {
  border-color: var(--link-color);
  background-color: #f8fbff;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(9, 105, 218, 0.1);
}

.pagination-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--link-color);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pagination-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #1f2328;
  line-height: 1.35;
}

.pagination-topic {
  font-size: 0.75rem;
  color: #6e7781;
  margin-top: 0.3rem;
}

/* Responsividade Mobile */
@media (max-width: 1100px) {
  .docs-toc {
    display: none;
  }
}

@media (max-width: 860px) {
  .docs-layout {
    flex-direction: column;
  }
  .docs-sidebar {
    width: 100%;
    position: static;
    max-height: none;
  }
  .lesson-pagination {
    flex-direction: column;
  }
  .btn-pagination {
    max-width: 100%;
  }
}

/* Suporte a Diagramas Mermaid */
.mermaid {
  text-align: center;
  background-color: #ffffff;
  padding: 1.5rem;
  margin: 1.5rem 0;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* Estilos para Blocos de Código e Botão Copiar */
.code-block-wrapper {
  position: relative;
  margin: 1.5rem 0;
}

.code-block-wrapper pre {
  margin: 0;
}

.copy-code-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background-color: rgba(255, 255, 255, 0.15);
  color: #f8f8f2;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  backdrop-filter: blur(4px);
  z-index: 10;
}

.copy-code-btn:hover {
  background-color: rgba(255, 255, 255, 0.3);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.copy-code-btn.copied {
  background-color: #50fa7b;
  color: #282a36;
  border-color: #50fa7b;
}

/* Ajuste nos números de linha gerados pelo Chroma */
.highlight {
  border-radius: 8px;
  overflow: hidden;
  margin: 1.5rem 0;
}

.highlight table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
}

.highlight td {
  padding: 0;
  border: none;
}

.highlight td:first-child pre {
  background-color: #21222c !important;
  color: #6272a4 !important;
  text-align: right;
  padding: 1rem 0.75rem 1rem 1rem !important;
  user-select: none;
  border-right: 1px solid #44475a;
  border-radius: 8px 0 0 8px;
}

.highlight td:last-child pre {
  padding: 1rem 1.25rem !important;
  border-radius: 0 8px 8px 0;
}

.package-card, .topic-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.topic-list {
  list-style: none;
  padding-left: 0;
}

.topic-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid #f0f0f0;
}

.lesson-list {
  list-style: decimal;
  padding-left: 1.5rem;
}

.lesson-list li {
  padding: 0.4rem 0;
}

.callout {
  padding: 1rem;
  margin: 1.5rem 0;
  border-left: 4px solid;
  border-radius: 0 6px 6px 0;
}

.callout-note {
  background-color: var(--note-bg);
  border-color: var(--note-border);
}

.callout-warning {
  background-color: var(--warning-bg);
  border-color: var(--warning-border);
}

.callout-info {
  background-color: var(--info-bg);
  border-color: var(--info-border);
}

.site-footer {
  background-color: #f6f8fa;
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: #57606a;
}

.footer-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.footer-nav a {
  margin: 0 0.75rem;
  color: #57606a;
}

.footer-nav a:hover {
  color: var(--link-color);
}