/* ============================================================
   m3-cargo — Sitio público (chrome + páginas de contenido)
   Nav, footer, hero de página, blog, artículo, FAQ, contacto.
   Depende de styles/m3.css (tokens).
   ============================================================ */

a { color: var(--brand-600); }
a:hover { color: var(--brand-700); }

/* ---------- Nav ---------- */
.snav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px); }
.snav.on-dark { background: rgba(10,26,47,.72); border-bottom: 1px solid rgba(255,255,255,.08); }
.snav.on-light { background: rgba(255,255,255,.82); border-bottom: 1px solid var(--border); }
.snav-in { max-width: var(--maxw); margin: 0 auto; padding: 13px 28px; display: flex; align-items: center; gap: 18px; }
.snav-brand { display: inline-flex; align-items: center; gap: 10px; }
.snav-links { display: flex; align-items: center; gap: 20px; margin-left: auto; }
.snav a.link { font-size: 14px; font-weight: 500; }
.snav.on-dark a.link { color: rgba(255,255,255,.72); }
.snav.on-dark a.link:hover, .snav.on-dark a.link.active { color: #fff; }
.snav.on-light a.link { color: var(--ink-2); }
.snav.on-light a.link:hover, .snav.on-light a.link.active { color: var(--brand-700); }
.snav a.link.active { font-weight: 600; }
.btn-ghost-dark { background: rgba(255,255,255,.08); color: #fff; border: 1px solid rgba(255,255,255,.22); }
.btn-ghost-dark:hover { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.34); }
.snav-burger { display: none; margin-left: auto; background: none; border: none; padding: 6px; }
.snav-mobile { display: none; }

@media (max-width: 900px) {
  .snav-links { display: none; }
  .snav-burger { display: inline-flex; }
  .snav.open .snav-mobile { display: flex; flex-direction: column; gap: 4px; padding: 8px 20px 18px; }
  .snav.on-dark.open .snav-mobile { background: var(--navy-900); border-top: 1px solid rgba(255,255,255,.08); }
  .snav.on-light.open .snav-mobile { background: var(--surface); border-top: 1px solid var(--border); }
  .snav-mobile a.link { padding: 11px 4px; border-bottom: 1px solid rgba(127,127,127,.12); }
  .snav-mobile .btn { margin-top: 10px; }
}

/* ---------- Page hero (light + dark variants) ---------- */
.page-hero { position: relative; overflow: hidden; }
.page-hero.dark { background: radial-gradient(130% 130% at 85% -10%, var(--navy-700), var(--navy-950) 65%); color: #fff; }
.page-hero.dark::after { content:""; position:absolute; inset:0; background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,.045) 1px, transparent 0); background-size: 28px 28px; }
.page-hero-in { max-width: var(--maxw); margin: 0 auto; padding: 66px 28px 54px; position: relative; z-index: 1; }
.page-hero h1 { font-size: clamp(30px,4.4vw,46px); letter-spacing: -.04em; line-height: 1.06; }
.page-hero.dark h1 { color: #fff; }
.page-eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--lime-400); }
.page-hero.light .page-eyebrow { color: var(--brand-600); }
.page-lead { font-size: 18px; line-height: 1.6; margin-top: 18px; max-width: 640px; }
.page-hero.dark .page-lead { color: rgba(255,255,255,.74); }
.page-hero.light .page-lead { color: var(--ink-3); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: 760px; margin: 0 auto; padding: 0 28px; }
.sec { padding: 64px 0; }
.sec-eyebrow { font-size: 12.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--brand-600); }
.sec-title { font-size: clamp(24px,3.2vw,34px); font-weight: 800; letter-spacing: -.035em; margin-top: 10px; }

/* breadcrumb */
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-4); }
.crumbs a { color: var(--ink-3); font-weight: 500; }
.crumbs a:hover { color: var(--brand-600); }

/* ---------- Footer ---------- */
.sfoot { background: var(--navy-950); color: rgba(255,255,255,.55); padding: 52px 0 30px; }
.sfoot-top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.08); }
.sfoot-cols { display: flex; gap: 40px; flex-wrap: wrap; font-size: 13.5px; }
.sfoot-col { display: flex; flex-direction: column; gap: 10px; min-width: 132px; }
.sfoot-col-h { color: #fff; font-weight: 700; font-size: 13px; letter-spacing: .01em; }
.sfoot-col a { color: rgba(255,255,255,.55); }
.sfoot-col a:hover { color: var(--lime-400); }
.sfoot-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: 22px; font-size: 12.5px; }

/* ---------- Cards genéricas de contenido ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(250px,1fr)); gap: 20px; }
.info-card { padding: 26px; border-radius: var(--r-lg); border: 1px solid var(--border); background: var(--surface); box-shadow: var(--sh-sm); }
.info-ic { width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center; margin-bottom: 15px; }

/* ---------- Blog ---------- */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(320px,1fr)); gap: 24px; }
.blog-card { display: flex; flex-direction: column; border-radius: var(--r-lg); border: 1px solid var(--border); background: var(--surface); overflow: hidden; box-shadow: var(--sh-sm); transition: transform .2s, box-shadow .2s; }
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.blog-thumb { height: 168px; position: relative; overflow: hidden; display: grid; place-items: center; }
.blog-thumb::after { content:""; position:absolute; inset:0; background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,.12) 1px, transparent 0); background-size: 22px 22px; pointer-events: none; z-index: 1; }
.blog-thumb image-slot, .blog-feat-thumb image-slot { position: relative; z-index: 0; }
.blog-cat { position: absolute; top: 14px; left: 14px; z-index: 2; font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 5px 10px; border-radius: 999px; background: rgba(255,255,255,.92); color: var(--navy-900); }
.blog-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.blog-body h3 { font-size: 19px; line-height: 1.25; letter-spacing: -.02em; }
.blog-meta { display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--ink-4); margin-top: auto; padding-top: 16px; }
.blog-feat { display: grid; grid-template-columns: 1.15fr .85fr; gap: 0; border-radius: var(--r-xl); overflow: hidden; border: 1px solid var(--border); background: var(--surface); box-shadow: var(--sh-md); }
.blog-feat-thumb { min-height: 320px; position: relative; }
.blog-feat-body { padding: 40px; display: flex; flex-direction: column; justify-content: center; }

/* ---------- Article ---------- */
.article-hero-in { max-width: 760px; margin: 0 auto; padding: 58px 28px 44px; position: relative; z-index: 1; }
.article-body { font-family: var(--font-body); font-size: 17.5px; line-height: 1.75; color: var(--ink-2); }
.article-body > * + * { margin-top: 22px; }
.article-body h2 { font-size: 27px; letter-spacing: -.03em; margin-top: 44px; color: var(--ink); }
.article-body h3 { font-size: 20px; letter-spacing: -.02em; margin-top: 30px; color: var(--ink); }
.article-body p { color: var(--ink-2); }
.article-body ul, .article-body ol { padding-left: 24px; display: flex; flex-direction: column; gap: 10px; }
.article-body li { padding-left: 4px; }
.article-body li::marker { color: var(--brand-500); font-weight: 700; }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body a { color: var(--brand-600); text-decoration: underline; text-underline-offset: 2px; }
.article-body blockquote { margin: 0; padding: 18px 24px; border-left: 4px solid var(--lime-500); background: var(--surface-2); border-radius: 0 var(--r-md) var(--r-md) 0; font-size: 18px; color: var(--ink); }
.callout { display: flex; gap: 14px; padding: 20px 22px; border-radius: var(--r-md); border: 1px solid var(--border); background: var(--surface-2); }
.callout-brand { background: var(--brand-50); border-color: var(--brand-100); }
.callout-lime { background: #F3F9E6; border-color: var(--lime-200); }
.callout-warn { background: var(--warning-bg); border-color: #f0d9a8; }
.article-toc { border: 1px solid var(--border); border-radius: var(--r-md); padding: 18px 20px; background: var(--surface); }
.article-toc a { display: block; padding: 5px 0; font-size: 14.5px; color: var(--ink-2); text-decoration: none; }
.article-toc a:hover { color: var(--brand-600); }
.article-cta { margin-top: 48px; border-radius: var(--r-xl); overflow: hidden; background: linear-gradient(150deg, var(--navy-800), var(--navy-950)); color: #fff; padding: 36px 40px; position: relative; }
.author-row { display: flex; align-items: center; gap: 12px; }
.author-ava { width: 46px; height: 46px; border-radius: 50%; background: var(--brand-100); color: var(--brand-700); display: grid; place-items: center; font-weight: 700; font-family: var(--font-display); flex: none; }

/* ---------- FAQ ---------- */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 820px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); overflow: hidden; transition: box-shadow .2s; }
.faq-item[open] { box-shadow: var(--sh-sm); }
.faq-q { display: flex; align-items: center; gap: 14px; padding: 19px 22px; font-family: var(--font-display); font-weight: 600; font-size: 16.5px; color: var(--ink); cursor: pointer; list-style: none; }
.faq-q::-webkit-details-marker { display: none; }
.faq-plus { margin-left: auto; flex: none; transition: transform .22s; color: var(--brand-600); }
.faq-item[open] .faq-plus { transform: rotate(45deg); }
.faq-a { padding: 0 22px 22px; color: var(--ink-2); font-size: 15.5px; line-height: 1.65; }

/* ---------- Contacto ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr .9fr; gap: 40px; align-items: start; }
.contact-methods { display: flex; flex-direction: column; gap: 14px; }
.contact-method { display: flex; align-items: flex-start; gap: 14px; padding: 18px 20px; border-radius: var(--r-md); border: 1px solid var(--border); background: var(--surface); box-shadow: var(--sh-xs); }
.contact-method-ic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; flex: none; }
.contact-form { padding: 30px; border-radius: var(--r-lg); border: 1px solid var(--border); background: var(--surface); box-shadow: var(--sh-md); }
.form-ok { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 12px; padding: 40px 20px; }

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; gap: 28px; }
  .blog-feat { grid-template-columns: 1fr; }
  .blog-feat-thumb { min-height: 200px; }
  .blog-feat-body { padding: 28px; }
}