:root {
  --green: #008000;
  --green-dark: #006400;
  --bg: #ffffff;
  --sidebar-bg: #f6f8f6;
  --border: #e2e8e2;
  --text: #1f2937;
  --muted: #6b7280;
  --code-bg: #f3f4f6;
}

* { box-sizing: border-box; }

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Cabeçalho */
.site-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: var(--green);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
}
.site-title:hover { text-decoration: none; }
.site-header input {
  flex: 1;
  max-width: 360px;
  margin-left: auto;
  padding: 8px 12px;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
}

/* Layout */
.layout {
  display: flex;
  min-height: calc(100vh - 120px);
}

.sidebar {
  width: 280px;
  flex: 0 0 280px;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 16px 8px;
  overflow-y: auto;
  max-height: calc(100vh - 60px);
  position: sticky;
  top: 60px;
}
.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.sidebar li a {
  display: block;
  padding: 6px 12px;
  border-radius: 6px;
  color: var(--text);
  font-size: 0.92rem;
}
.sidebar li a:hover { background: #e9efe9; text-decoration: none; }
.sidebar li a.active { background: var(--green); color: #fff; font-weight: 600; }

.content {
  flex: 1;
  min-width: 0;
  padding: 28px 40px 48px;
  max-width: 880px;
}

/* Página */
.page-header {
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  padding-bottom: 12px;
}
.page-header h1 {
  margin: 0 0 6px;
  font-size: 1.9rem;
  line-height: 1.25;
}
.edit-link {
  font-size: 0.85rem;
  color: var(--muted);
}

/* Conteúdo */
.page-content h2 {
  margin-top: 2em;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  color: var(--green-dark);
}
.page-content h3 { margin-top: 1.5em; }
.page-content img { max-width: 100%; height: auto; border-radius: 6px; }

.page-content figure {
  margin: 20px 0;
  text-align: center;
}
.page-content figcaption {
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: 6px;
}

.page-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 18px 0;
  font-size: 0.92rem;
}
.page-content th, .page-content td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}
.page-content th { background: #eef4ee; }

.page-content pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.88rem;
}
.page-content code {
  background: var(--code-bg);
  padding: 2px 5px;
  border-radius: 4px;
  font-size: 0.9em;
}
.page-content pre code { background: none; padding: 0; }

.page-content blockquote {
  margin: 16px 0;
  padding: 10px 16px;
  border-left: 4px solid var(--green);
  background: #f0f7f0;
  border-radius: 0 6px 6px 0;
}

/* Rodapé */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 16px 20px;
  color: var(--muted);
  font-size: 0.85rem;
}

/* Responsivo */
@media (max-width: 760px) {
  .layout { flex-direction: column; }
  .sidebar {
    width: 100%;
    flex: none;
    max-height: 40vh;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .content { padding: 20px 16px 40px; }
  .site-header { flex-wrap: wrap; }
  .site-header input { max-width: 100%; margin-left: 0; }
}