/* Vector Academy — estilo mínimo sobrio, AI-first sin marketing motivacional */
:root {
  --c-text: #111;
  --c-muted: #666;
  --c-line: #ddd;
  --c-bg: #fff;
  --c-bg-soft: #fafafa;
  --c-accent: #111;
  --max-width: 900px;
  --radius: 4px;
  --font-sans: -apple-system, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--c-bg); color: var(--c-text); font-family: var(--font-sans); line-height: 1.55; font-size: 16px; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.site-header { border-bottom: 1px solid var(--c-line); padding: 14px 0; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; }
.brand { color: var(--c-text); text-decoration: none; font-size: 18px; letter-spacing: -0.3px; }
nav a { margin-left: 16px; color: var(--c-text); text-decoration: none; font-size: 14px; }
nav a:hover { text-decoration: underline; }
.cta { background: var(--c-accent); color: #fff !important; padding: 8px 14px; border-radius: var(--radius); }
.cta:hover { text-decoration: none !important; opacity: 0.9; }

main { padding: 40px 0 60px; min-height: 60vh; }
.hero h1 { font-size: 36px; letter-spacing: -1px; margin-bottom: 12px; }
.hero .lead { font-size: 18px; color: var(--c-muted); }

h1 { font-weight: 600; font-size: 28px; }
h2 { font-weight: 600; font-size: 22px; margin-top: 40px; border-bottom: 1px solid var(--c-line); padding-bottom: 6px; }
h3 { font-weight: 600; font-size: 17px; margin-top: 28px; }

a { color: #0044aa; }
a:hover { color: #001a88; }

.grid-pilares { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-pilares li { background: var(--c-bg-soft); padding: 16px; border-radius: var(--radius); }
.grid-pilares h3 { margin: 0 0 6px; font-size: 15px; }
.grid-pilares p { margin: 0; color: var(--c-muted); font-size: 14px; }

.pilar-block { margin-bottom: 32px; }
.modulos-list { padding: 0; list-style: none; }
.modulos-list li { padding: 10px 0; border-bottom: 1px solid var(--c-line); }
.modulos-list a { font-weight: 500; }
.modulos-list .meta { color: var(--c-muted); font-size: 13px; margin-left: 12px; }

.manual { display: grid; grid-template-columns: 220px 1fr; gap: 32px; }
.manual-meta { font-size: 13px; color: var(--c-muted); position: sticky; top: 16px; align-self: start; }
.manual h1 { margin-top: 0; }
.manual table { border-collapse: collapse; width: 100%; margin: 16px 0; font-size: 14px; }
.manual th, .manual td { border: 1px solid var(--c-line); padding: 6px 8px; text-align: left; vertical-align: top; }
.manual th { background: var(--c-bg-soft); }
.manual blockquote { border-left: 3px solid var(--c-text); margin: 16px 0; padding: 8px 16px; background: var(--c-bg-soft); font-size: 15px; }
.manual code { font-family: var(--font-mono); background: var(--c-bg-soft); padding: 1px 5px; border-radius: 3px; font-size: 14px; }
.manual pre { background: #f0f0f0; padding: 12px; overflow-x: auto; font-size: 13px; border-radius: var(--radius); }
.manual .manual-toc { background: var(--c-bg-soft); padding: 16px; border-radius: var(--radius); font-size: 14px; }

.manual-quiz { margin-top: 50px; padding: 24px; background: var(--c-bg-soft); border-radius: var(--radius); }

.site-footer { border-top: 1px solid var(--c-line); padding: 30px 0; color: var(--c-muted); font-size: 13px; margin-top: 40px; }
.site-footer .legal { font-size: 12px; max-width: 760px; }

@media (max-width: 720px) {
  .manual { grid-template-columns: 1fr; }
  .manual-meta { position: static; }
  .grid-pilares { grid-template-columns: 1fr; }
}