:root {
  color-scheme: light dark;

  --primary: #1f2937;
  --secondary: #374151;
  --accent: #2563eb;
  --border: #d1d5db;
  --background: #ffffff;
  --muted: #f3f4f6;
  --code-bg: #111827;
  --code-text: #f9fafb;
  --text: #111827;
  --warning-bg: #fff7ed;
  --warning-border: #f97316;
  --note-bg: #eff6ff;
  --note-border: #2563eb;
  --table-stripe: #f3f4f6;
}

/* Tema escuro automático conforme sistema/navegador */
@media (prefers-color-scheme: dark) {
  :root {
    --primary: #f9fafb;
    --secondary: #1f2937;
    --accent: #60a5fa;
    --border: #374151;
    --background: #111827;
    --muted: #1f2937;
    --code-bg: #030712;
    --code-text: #f9fafb;
    --text: #e5e7eb;
    --warning-bg: #2b1d0e;
    --warning-border: #fb923c;
    --note-bg: #0f1f33;
    --note-border: #60a5fa;
    --table-stripe: #1f2937;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 40px 24px;
}

h1,
h2,
h3 {
  color: var(--primary);
  line-height: 1.3;
}

h1 {
  font-size: 32px;
  border-bottom: 3px solid var(--accent);
  padding-bottom: 12px;
  margin-bottom: 8px;
}

h2 {
  font-size: 24px;
  margin-top: 42px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

h3 {
  font-size: 19px;
  margin-top: 28px;
}

p {
  margin: 12px 0;
}

code {
  background: var(--muted);
  color: var(--text);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: Consolas, Monaco, monospace;
  font-size: 14px;
}

pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 18px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.5;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
}

th {
  background: var(--secondary);
  color: #ffffff;
  text-align: left;
  padding: 10px;
  border: 1px solid var(--border);
}

td {
  padding: 10px;
  border: 1px solid var(--border);
  vertical-align: top;
}

tr:nth-child(even) td {
  background: var(--table-stripe);
}

ul {
  margin-top: 8px;
}

.subtitle {
  color: var(--text);
  opacity: 0.75;
  font-size: 18px;
  margin-bottom: 32px;
}

.warning {
  background: var(--warning-bg);
  border-left: 4px solid var(--warning-border);
  padding: 14px 18px;
  margin: 18px 0;
}

.note {
  background: var(--note-bg);
  border-left: 4px solid var(--note-border);
  padding: 14px 18px;
  margin: 18px 0;
}

@media print {
  :root {
    --primary: #1f2937;
    --secondary: #374151;
    --accent: #2563eb;
    --border: #d1d5db;
    --background: #ffffff;
    --muted: #f3f4f6;
    --code-bg: #111827;
    --code-text: #f9fafb;
    --text: #111827;
    --warning-bg: #fff7ed;
    --warning-border: #f97316;
    --note-bg: #eff6ff;
    --note-border: #2563eb;
    --table-stripe: #f3f4f6;
  }

  body {
    background: #ffffff;
    color: #111827;
  }

  .container {
    max-width: 100%;
    padding: 20px;
  }

  pre {
    white-space: pre-wrap;
    word-break: break-word;
  }

  table {
    page-break-inside: avoid;
  }
}