:root {
  --bg: #fafaf9; --surface: #ffffff; --ink: #201d4c; --ink-soft: #52525b; --ink-faint: #71717a;
  --line: #e4e4e7; --brand: #0027bf; --brand-ink: #ffffff; --brand-soft: color-mix(in srgb, #0027bf 8%, white);
  --note: #0027bf; --warn: #b45309; --tip: #047857;
  --radius: 12px; --header-h: 64px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0d; --surface: #141417; --ink: #f4f4f5; --ink-soft: #a1a1aa; --ink-faint: #8b8b95;
    --line: #27272a; --brand: color-mix(in srgb, #0027bf 55%, white); --brand-soft: color-mix(in srgb, #0027bf 28%, black);
    --note: color-mix(in srgb, #0027bf 55%, white); --warn: #fbbf24; --tip: #34d399;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--bg); color: var(--ink); line-height: 1.6; -webkit-font-smoothing: antialiased;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--brand); }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--brand); color: var(--brand-ink); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* Encabezado */
.topbar { position: sticky; top: 0; z-index: 30; height: var(--header-h); background: color-mix(in srgb, var(--bg) 90%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar .wrap { height: 100%; display: flex; align-items: center; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); flex: none; }
.brand img { height: 36px; width: auto; display: block; }
.brand .logo-dark { display: none; }
@media (prefers-color-scheme: dark) { .brand .logo-light { display: none; } .brand .logo-dark { display: block; } }
.brand .tag { font-size: .8rem; font-weight: 600; color: var(--ink-soft); padding-left: 12px; border-left: 1px solid var(--line); }
.topbar .spacer { flex: 1; }
.topbar .search { width: min(360px, 40vw); }
.toplinks { display: flex; gap: 18px; font-size: .88rem; }
.toplinks a { color: var(--ink-soft); text-decoration: none; }
.toplinks a:hover { color: var(--ink); }
.menu-btn { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; color: var(--ink); font: inherit; font-size: .85rem; cursor: pointer; }

/* Buscador */
.search { position: relative; }
.search input {
  width: 100%; font: inherit; font-size: .92rem; color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px; padding: 9px 40px 9px 38px;
}
.search input::placeholder { color: var(--ink-faint); }
.search .icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; color: var(--ink-faint); pointer-events: none; }
.search kbd { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); font: inherit; font-size: .72rem; color: var(--ink-faint); border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; }
.results { position: absolute; left: 0; right: 0; top: calc(100% + 6px); background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 12px 32px rgba(0,0,0,.12); padding: 6px; z-index: 40; max-height: 70vh; overflow: auto; }
.results[hidden] { display: none; }
.results a { display: block; padding: 10px 12px; border-radius: 8px; text-decoration: none; color: var(--ink); }
.results a[aria-selected="true"], .results a:hover { background: var(--brand-soft); }
.results .r-cat { font-size: .72rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .05em; }
.results .r-title { font-weight: 600; font-size: .92rem; }
.results .r-desc { font-size: .82rem; color: var(--ink-soft); }
.results .empty { padding: 14px 12px; font-size: .9rem; color: var(--ink-soft); }

/* Inicio */
.hero { padding: 72px 0 40px; text-align: center; }
.hero h1 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); letter-spacing: -.02em; margin: 0 0 10px; }
.hero p { color: var(--ink-soft); margin: 0 auto 28px; max-width: 560px; }
.hero .search { max-width: 560px; margin: 0 auto; text-align: left; }
.hero .search input { font-size: 1.02rem; padding: 14px 44px 14px 44px; border-radius: 14px; }
.hero .search .icon { left: 16px; width: 18px; height: 18px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; padding: 24px 0 40px; }
.card { display: block; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 24px; transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--brand); transform: translateY(-2px); }
@media (prefers-reduced-motion: reduce) { .card, .card:hover { transition: none; transform: none; } }
.card .ico { width: 40px; height: 40px; border-radius: 10px; background: var(--brand-soft); color: var(--brand); display: grid; place-items: center; margin-bottom: 14px; }
.card .ico svg { width: 20px; height: 20px; }
.card h2 { font-size: 1.05rem; margin: 0 0 6px; }
.card p { margin: 0; font-size: .9rem; color: var(--ink-soft); }
.card .count { margin-top: 14px; font-size: .8rem; color: var(--ink-faint); }
.popular { padding-bottom: 72px; }
.popular h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-faint); margin: 0 0 12px; }
.popular ul { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.popular li + li { border-top: 1px solid var(--line); }
.popular a { display: flex; justify-content: space-between; gap: 16px; padding: 14px 18px; text-decoration: none; color: var(--ink); }
.popular a:hover { background: var(--brand-soft); }
.popular a span:last-child { color: var(--ink-faint); font-size: .85rem; white-space: nowrap; }

/* Documentación */
.layout { display: grid; grid-template-columns: 260px minmax(0, 1fr) 220px; gap: 48px; padding-top: 32px; padding-bottom: 80px; align-items: start; }
.sidebar { position: sticky; top: calc(var(--header-h) + 24px); max-height: calc(100vh - var(--header-h) - 48px); overflow: auto; padding-right: 8px; font-size: .9rem; }
.sidebar h3 { font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-faint); margin: 22px 0 6px; }
.sidebar h3:first-child { margin-top: 0; }
.sidebar h3 a { color: inherit; text-decoration: none; }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li a { display: block; padding: 6px 12px; border-radius: 8px; color: var(--ink-soft); text-decoration: none; border-left: 2px solid transparent; }
.sidebar li a:hover { color: var(--ink); background: var(--brand-soft); }
.sidebar li a[aria-current="page"] { color: var(--brand); background: var(--brand-soft); font-weight: 600; border-left-color: var(--brand); }
.crumbs { font-size: .84rem; color: var(--ink-faint); margin-bottom: 18px; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs a { color: var(--ink-soft); text-decoration: none; }
.crumbs a:hover { color: var(--brand); }
.crumbs span[aria-hidden] { opacity: .6; }
.doc h1 { font-size: clamp(1.7rem, 3.4vw, 2.2rem); letter-spacing: -.02em; line-height: 1.2; margin: 0 0 10px; }
.doc .lead { font-size: 1.08rem; color: var(--ink-soft); margin: 0 0 28px; }
.doc .meta { font-size: .82rem; color: var(--ink-faint); margin: -14px 0 28px; }
.doc h2 { font-size: 1.35rem; letter-spacing: -.01em; margin: 44px 0 12px; padding-top: 8px; }
.doc h3 { font-size: 1.08rem; margin: 28px 0 8px; }
.doc h2 .anchor, .doc h3 .anchor { opacity: 0; margin-left: 8px; text-decoration: none; color: var(--ink-faint); font-weight: 400; }
.doc h2:hover .anchor, .doc h3:hover .anchor, .doc .anchor:focus { opacity: 1; }
.doc p, .doc li { color: var(--ink-soft); font-size: 1rem; }
.doc p { margin: 0 0 16px; }
.doc strong { color: var(--ink); }
.doc ul { padding-left: 22px; margin: 0 0 16px; }
.doc li { margin-bottom: 8px; }
.doc code { background: var(--brand-soft); color: var(--ink); border-radius: 5px; padding: 1px 6px; font-size: .9em; }
.doc ol { list-style: none; counter-reset: step; padding: 0; margin: 0 0 20px; }
.doc ol > li { counter-increment: step; position: relative; padding-left: 44px; margin-bottom: 18px; min-height: 30px; }
.doc ol > li::before {
  content: counter(step); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand); font-weight: 700; font-size: .88rem; display: grid; place-items: center;
}
.doc ol > li > ul { margin-top: 8px; }
.doc ol > li > p { margin-bottom: 10px; }
.doc figure { margin: 18px 0 24px; }
.doc figure img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); box-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06); }
.doc figcaption { font-size: .82rem; color: var(--ink-faint); margin-top: 8px; text-align: center; }
.callout { border: 1px solid var(--line); border-left-width: 4px; border-radius: 10px; padding: 14px 18px; margin: 22px 0; background: var(--surface); }
.callout .t { font-weight: 700; font-size: .86rem; margin-bottom: 4px; display: block; }
.callout p:last-child { margin-bottom: 0; }
.callout-nota { border-left-color: var(--note); } .callout-nota .t { color: var(--note); }
.callout-aviso { border-left-color: var(--warn); } .callout-aviso .t { color: var(--warn); }
.callout-consejo { border-left-color: var(--tip); } .callout-consejo .t { color: var(--tip); }
.toc { position: sticky; top: calc(var(--header-h) + 24px); font-size: .85rem; }
.toc h3 { font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-faint); margin: 0 0 10px; }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 4px 14px; margin-left: -1px; border-left: 2px solid transparent; color: var(--ink-soft); text-decoration: none; }
.toc a:hover { color: var(--ink); }
.toc a.active { color: var(--brand); border-left-color: var(--brand); font-weight: 600; }
.toc li.sub a { padding-left: 28px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 56px; }
.pager a { display: block; border: 1px solid var(--line); background: var(--surface); border-radius: 12px; padding: 14px 18px; text-decoration: none; color: var(--ink); }
.pager a:hover { border-color: var(--brand); }
.pager small { display: block; color: var(--ink-faint); font-size: .76rem; margin-bottom: 2px; }
.pager .next { text-align: right; grid-column: 2; }
.help-cta { margin-top: 40px; border: 1px solid var(--line); background: var(--surface); border-radius: 14px; padding: 20px 22px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.help-cta p { margin: 0; color: var(--ink-soft); font-size: .95rem; }
.help-cta strong { color: var(--ink); }
.btn { display: inline-block; background: var(--brand); color: var(--brand-ink); text-decoration: none; padding: 9px 18px; border-radius: 10px; font-weight: 600; font-size: .9rem; }
.btn:hover { filter: brightness(1.08); }
.cat-list { list-style: none; padding: 0; margin: 0; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
.cat-list li + li { border-top: 1px solid var(--line); }
.cat-list a { display: block; padding: 16px 20px; text-decoration: none; color: var(--ink); }
.cat-list a:hover { background: var(--brand-soft); }
.cat-list strong { display: block; }
.cat-list span { color: var(--ink-soft); font-size: .92rem; }

footer { border-top: 1px solid var(--line); padding: 28px 0; }
footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.foot-links { display: flex; gap: 20px; font-size: .85rem; flex-wrap: wrap; }
.foot-links a { color: var(--ink-soft); text-decoration: none; }
.foot-links a:hover { color: var(--ink); }
.copy { font-size: .8rem; color: var(--ink-faint); margin: 0; }

@media (max-width: 1100px) { .layout { grid-template-columns: 240px minmax(0, 1fr); } .toc { display: none; } }
@media (max-width: 820px) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 0; padding-top: 20px; }
  .menu-btn { display: inline-block; }
  .toplinks, .brand .tag { display: none; }
  .topbar .search { width: auto; flex: 1; }
  .topbar .search kbd { display: none; }
  .topbar .search input { padding-right: 12px; }
  .sidebar { display: none; position: static; max-height: none; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); padding: 16px; margin-bottom: 24px; }
  body.nav-open .sidebar { display: block; }
  .pager { grid-template-columns: 1fr; } .pager .next { grid-column: 1; }
  .hero { padding-top: 48px; }
}