/* ── Blog public theme (light, .blog-* prefix) ───────── */
/* Sprint 27: redesign — hero, lead form, search, card grid, TOC, sidebar */

:root {
  --blog-accent: #2563eb;
  --blog-accent-dark: color-mix(in srgb, var(--blog-accent) 80%, #000);
  --blog-bg: #ffffff;
  --blog-bg-alt: #f8fafc;
  --blog-text: #1e293b;
  --blog-text-muted: #64748b;
  --blog-border: #e2e8f0;
  --blog-radius: 8px;
  --blog-max-w: 780px;
  --blog-max-w-wide: 1100px;
}

/* ── Reset ─────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--blog-bg);
  color: var(--blog-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ── Header ────────────────────────────────────────────── */

.blog-header {
  border-bottom: 1px solid var(--blog-border);
  background: var(--blog-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.blog-header-inner {
  max-width: var(--blog-max-w-wide);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.blog-site-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blog-text);
}
.blog-site-name:hover { text-decoration: none; color: var(--blog-accent); }

.blog-nav { display: flex; gap: 1.25rem; }
.blog-nav-link {
  font-size: 0.9rem;
  color: var(--blog-text-muted);
  font-weight: 500;
}
.blog-nav-link:hover { color: var(--blog-accent); text-decoration: none; }

/* ── Main ──────────────────────────────────────────────── */

.blog-main {
  max-width: var(--blog-max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.blog-main--wide {
  max-width: var(--blog-max-w-wide);
}

/* ══════════════════════════════════════════════════════════ */
/* ── HOME ──────────────────────────────────────────────── */
/* ══════════════════════════════════════════════════════════ */

/* ── Hero ──────────────────────────────────────────────── */

.blog-hero {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
  background: linear-gradient(135deg, var(--blog-accent), var(--blog-accent-dark));
  border-radius: 12px;
  padding: 2.5rem;
  margin-bottom: 2rem;
  color: #fff;
}

.blog-hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.blog-hero-desc {
  font-size: 1.1rem;
  opacity: 0.9;
  line-height: 1.6;
}

/* ── Lead form (placeholder) ──────────────────────────── */

.blog-lead-box {
  background: #fff;
  color: var(--blog-text);
  border-radius: var(--blog-radius);
  padding: 1.5rem;
}

.blog-lead-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.25rem; }
.blog-lead-subtitle { font-size: 0.85rem; color: var(--blog-text-muted); margin-bottom: 1rem; }

.blog-lead-form { display: flex; flex-direction: column; gap: 0.6rem; }

.blog-lead-input {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--blog-border);
  border-radius: 6px;
  font-size: 0.9rem;
  width: 100%;
  background: var(--blog-bg-alt);
}
.blog-lead-input:disabled { opacity: 0.6; cursor: not-allowed; }

.blog-lead-check {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--blog-text-muted);
  cursor: default;
}
.blog-lead-check input { margin-top: 0.15rem; }

.blog-lead-btn {
  padding: 0.6rem;
  background: var(--blog-accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.blog-lead-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Honeypot field — hidden from humans, bots fill it */
.blog-lead-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  tab-size: 0;
}

/* Lead result page (confirm, thanks, unsubscribe) */
.blog-lead-result {
  text-align: center;
  padding: 4rem 2rem;
  max-width: 500px;
  margin: 0 auto;
}
.blog-lead-result h1 { font-size: 2rem; margin-bottom: 1rem; }
.blog-lead-result p { color: var(--blog-text-muted); margin-bottom: 1.5rem; }

/* ── Search bar ────────────────────────────────────────── */

.blog-search-bar { margin-bottom: 2rem; }

.blog-search-form {
  display: flex;
  gap: 0.5rem;
}

.blog-search-input {
  flex: 1;
  padding: 0.6rem 1rem;
  border: 1px solid var(--blog-border);
  border-radius: 6px;
  font-size: 0.95rem;
  background: var(--blog-bg);
}
.blog-search-input:focus {
  outline: none;
  border-color: var(--blog-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--blog-accent) 20%, transparent);
}

.blog-search-btn {
  padding: 0.6rem 1.25rem;
  background: var(--blog-accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.blog-search-btn:hover { opacity: 0.9; }

.blog-search-status {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--blog-text-muted);
}
.blog-search-status a { margin-left: 0.5rem; }

/* ── Section title ─────────────────────────────────────── */

.blog-section-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--blog-accent);
  display: inline-block;
}

/* ── Card grid ─────────────────────────────────────────── */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.blog-card {
  padding: 1.25rem;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-bg);
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.blog-card:hover {
  border-color: var(--blog-accent);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

.blog-card-badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--blog-accent);
  background: color-mix(in srgb, var(--blog-accent) 10%, transparent);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  width: fit-content;
  margin-bottom: 0.75rem;
}

.blog-card-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; line-height: 1.4; }
.blog-card-title a { color: var(--blog-text); }
.blog-card-title a:hover { color: var(--blog-accent); text-decoration: none; }

.blog-card-excerpt { color: var(--blog-text-muted); font-size: 0.9rem; margin-bottom: 0.75rem; flex: 1; }

.blog-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
}

.blog-card-date { color: var(--blog-text-muted); }
.blog-card-link { font-weight: 600; }

/* ══════════════════════════════════════════════════════════ */
/* ── POST DETAIL ───────────────────────────────────────── */
/* ══════════════════════════════════════════════════════════ */

/* ── Post hero ─────────────────────────────────────────── */

.blog-post-hero {
  background: linear-gradient(135deg, var(--blog-accent), var(--blog-accent-dark));
  color: #fff;
  padding: 2rem 2.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.blog-breadcrumb {
  font-size: 0.85rem;
  margin-bottom: 1rem;
  opacity: 0.85;
}
.blog-breadcrumb a { color: #fff; text-decoration: underline; }
.blog-breadcrumb-sep { margin: 0 0.35rem; }

.blog-post-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.blog-post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
  opacity: 0.85;
}

.blog-post-type-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(255,255,255,0.2);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

/* ── Post layout (body + sidebar) ──────────────────────── */

.blog-post-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2rem;
  align-items: start;
}

/* ── TOC ───────────────────────────────────────────────── */

.blog-toc {
  background: var(--blog-bg-alt);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.blog-toc-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--blog-text);
}

.blog-toc-list {
  list-style: none;
  padding: 0;
  counter-reset: toc;
}

.blog-toc-list li {
  counter-increment: toc;
  margin-bottom: 0.4rem;
}

.blog-toc-list li::before {
  content: counter(toc) ". ";
  color: var(--blog-accent);
  font-weight: 600;
}

.blog-toc-list li a {
  font-size: 0.9rem;
  color: var(--blog-text);
}
.blog-toc-list li a:hover { color: var(--blog-accent); }

.blog-toc-list li.blog-toc-sub {
  padding-left: 1.25rem;
  font-size: 0.85rem;
}

/* ── Post content ──────────────────────────────────────── */

.blog-post-content {
  font-size: 1.05rem;
  line-height: 1.8;
}
.blog-post-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--blog-accent);
}
.blog-post-content h3 { font-size: 1.2rem; font-weight: 600; margin: 1.75rem 0 0.75rem; }
.blog-post-content p { margin-bottom: 1rem; }
.blog-post-content ul, .blog-post-content ol { margin: 1rem 0; padding-left: 1.5rem; }
.blog-post-content li { margin-bottom: 0.5rem; }
.blog-post-content blockquote {
  border-left: 4px solid var(--blog-accent);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--blog-bg-alt);
  border-radius: 0 var(--blog-radius) var(--blog-radius) 0;
  font-style: italic;
}
.blog-post-content blockquote strong { font-style: normal; color: var(--blog-accent); }
.blog-post-content a { color: var(--blog-accent); text-decoration: underline; }
.blog-post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--blog-radius);
  margin: 1rem 0;
}
.blog-post-content figure { margin: 1.5rem 0; }
.blog-post-content figcaption {
  font-size: 0.85rem;
  color: var(--blog-text-muted);
  font-style: italic;
  margin-top: 0.5rem;
  text-align: center;
}
.blog-post-content table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
.blog-post-content th, .blog-post-content td {
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--blog-border);
  text-align: left;
}
.blog-post-content th { background: var(--blog-bg-alt); font-weight: 600; }

/* ── Sponsored disclosure ──────────────────────────────── */

.blog-sponsored {
  font-size: 0.8rem;
  color: var(--blog-text-muted);
  background: var(--blog-bg-alt);
  padding: 0.35rem 0.75rem;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 0.5rem;
  font-style: italic;
}

/* ── Sidebar ───────────────────────────────────────────── */

.blog-sidebar {
  position: sticky;
  top: 5rem;
}

.blog-sidebar-cta {
  background: var(--blog-bg-alt);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  padding: 1.5rem;
  text-align: center;
}

.blog-sidebar-cta-title { font-size: 1rem; font-weight: 700; margin-bottom: 0.35rem; }
.blog-sidebar-cta-desc { font-size: 0.85rem; color: var(--blog-text-muted); margin-bottom: 1rem; }

.blog-sidebar-cta-btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  background: var(--blog-accent);
  color: #fff;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
}
.blog-sidebar-cta-btn:hover { text-decoration: none; opacity: 0.9; }

/* ── Ad slots (Sprint 31) ─────────────────────────────── */

.blog-ad {
  background: var(--blog-bg-alt);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  overflow: hidden;
}

.blog-ad-label {
  display: inline-block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--blog-text-muted);
  padding: 0.25rem 0.6rem;
  font-weight: 600;
}

.blog-ad-link { display: block; text-decoration: none; color: inherit; }
.blog-ad-link:hover { opacity: 0.92; }

.blog-ad-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0;
}

.blog-ad-title {
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.6rem 0.75rem 0.25rem;
  color: var(--blog-text);
}

.blog-ad-html { padding: 0.5rem 0.75rem 0.75rem; font-size: 0.85rem; color: var(--blog-text); }

/* Hero ad (home aside) */
.blog-hero-ad { display: flex; align-items: start; }
.blog-ad--hero { max-width: 340px; width: 100%; }

/* Sidebar ad */
.blog-ad--sidebar { margin-bottom: 1.5rem; }

/* Inline ad (in-content) */
.blog-ad--inline { margin: 1.5rem 0; }

/* Between-posts ad (home grid) */
.blog-ad--between { grid-column: 1 / -1; margin: 0.5rem 0; }

/* Hero without ad — full width */
.blog-hero--full { grid-template-columns: 1fr; }

/* ── Post footer ───────────────────────────────────────── */

.blog-post-footer { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--blog-border); }
.blog-back { color: var(--blog-accent); font-size: 0.95rem; }

/* ── Zone types ────────────────────────────────────────── */

.blog-zone { margin-bottom: 1.5rem; }

/* ── 404 ───────────────────────────────────────────────── */

.blog-not-found { text-align: center; padding: 4rem 0; }
.blog-not-found h1 { font-size: 4rem; color: var(--blog-text-muted); margin-bottom: 0.5rem; }
.blog-not-found p { color: var(--blog-text-muted); margin-bottom: 1.5rem; }

/* ── Empty state ───────────────────────────────────────── */

.blog-empty { color: var(--blog-text-muted); font-style: italic; padding: 2rem 0; text-align: center; }

/* ── Footer ────────────────────────────────────────────── */

.blog-footer {
  border-top: 1px solid var(--blog-border);
  background: var(--blog-bg-alt);
}

.blog-footer-inner {
  max-width: var(--blog-max-w-wide);
  margin: 0 auto;
  padding: 1.5rem;
  text-align: center;
  color: var(--blog-text-muted);
  font-size: 0.85rem;
}

/* ═══════════════════════════════════════════════════════ */
/* ── THEMES ────────────────────────────────────────────── */
/* ═══════════════════════════════════════════════════════ */

/* ── Editorial (default): serif, centrado, clasico ────── */

.blog-theme-editorial {
  --blog-font-heading: Georgia, 'Times New Roman', serif;
  --blog-font-body: Georgia, 'Times New Roman', serif;
  --blog-bg: #ffffff;
  --blog-bg-alt: #faf8f5;
  --blog-text: #1a1a1a;
  --blog-text-muted: #6b6b6b;
  --blog-border: #e0ddd8;
}
.blog-theme-editorial .blog-hero-title,
.blog-theme-editorial .blog-post-title,
.blog-theme-editorial .blog-card-title a {
  font-family: var(--blog-font-heading);
}
.blog-theme-editorial .blog-post-content,
.blog-theme-editorial .blog-card-excerpt {
  font-family: var(--blog-font-body);
}

/* ── Minimal: sans, whitespace, sobrio ───────────────── */

.blog-theme-minimal {
  --blog-font-heading: system-ui, -apple-system, sans-serif;
  --blog-font-body: system-ui, -apple-system, sans-serif;
  --blog-bg: #ffffff;
  --blog-bg-alt: #fafafa;
  --blog-text: #111111;
  --blog-text-muted: #888888;
  --blog-border: #eeeeee;
}
.blog-theme-minimal .blog-hero-title { font-weight: 600; }
.blog-theme-minimal .blog-post-title { font-weight: 400; font-size: 1.75rem; letter-spacing: -0.01em; }
.blog-theme-minimal .blog-card { border: none; border-bottom: 1px solid var(--blog-border); border-radius: 0; }
.blog-theme-minimal .blog-header { border-bottom: none; }
.blog-theme-minimal .blog-site-name { font-weight: 400; font-size: 1rem; letter-spacing: 0.05em; text-transform: uppercase; }

/* ── Magazine: grid de tarjetas, titulares grandes ───── */

.blog-theme-magazine {
  --blog-font-heading: system-ui, -apple-system, sans-serif;
  --blog-font-body: system-ui, -apple-system, sans-serif;
  --blog-bg: #f5f5f5;
  --blog-bg-alt: #ffffff;
  --blog-text: #1e1e1e;
  --blog-text-muted: #555555;
  --blog-border: #dddddd;
}
.blog-theme-magazine .blog-card { background: var(--blog-bg-alt); border-radius: 12px; box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
.blog-theme-magazine .blog-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.12); border-color: transparent; }
.blog-theme-magazine .blog-hero-title { font-size: 2.5rem; font-weight: 900; letter-spacing: -0.02em; }
.blog-theme-magazine .blog-site-name { font-weight: 800; font-size: 1.4rem; }

/* ── Tech: mono/sans, fondo oscuro, acentos ──────────── */

.blog-theme-tech {
  --blog-font-heading: system-ui, -apple-system, sans-serif;
  --blog-font-body: system-ui, -apple-system, sans-serif;
  --blog-font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --blog-bg: #0d1117;
  --blog-bg-alt: #161b22;
  --blog-text: #e6edf3;
  --blog-text-muted: #8b949e;
  --blog-border: #30363d;
}
.blog-theme-tech body,
.blog-theme-tech { background: var(--blog-bg); color: var(--blog-text); }
.blog-theme-tech a { color: var(--blog-accent); }
.blog-theme-tech .blog-header { background: var(--blog-bg-alt); border-color: var(--blog-border); }
.blog-theme-tech .blog-site-name { color: var(--blog-text); font-family: var(--blog-font-mono); font-size: 1rem; }
.blog-theme-tech .blog-site-name:hover { color: var(--blog-accent); }
.blog-theme-tech .blog-nav-link { color: var(--blog-text-muted); }
.blog-theme-tech .blog-card { background: var(--blog-bg-alt); border-color: var(--blog-border); }
.blog-theme-tech .blog-card:hover { border-color: var(--blog-accent); }
.blog-theme-tech .blog-card-title a { color: var(--blog-text); }
.blog-theme-tech .blog-card-title a:hover { color: var(--blog-accent); }
.blog-theme-tech .blog-hero { background: linear-gradient(135deg, var(--blog-bg-alt), var(--blog-bg)); border: 1px solid var(--blog-border); }
.blog-theme-tech .blog-post-hero { background: var(--blog-bg-alt); border: 1px solid var(--blog-border); }
.blog-theme-tech .blog-post-content code,
.blog-theme-tech .blog-post-content pre {
  font-family: var(--blog-font-mono);
  background: var(--blog-bg);
  border: 1px solid var(--blog-border);
  border-radius: 4px;
  padding: 0.15em 0.4em;
}
.blog-theme-tech .blog-post-content pre { padding: 1rem; overflow-x: auto; }
.blog-theme-tech .blog-post-content pre code { border: none; padding: 0; background: none; }
.blog-theme-tech .blog-post-content blockquote { border-color: var(--blog-accent); background: var(--blog-bg-alt); color: var(--blog-text-muted); }
.blog-theme-tech .blog-toc { background: var(--blog-bg-alt); border-color: var(--blog-border); }
.blog-theme-tech .blog-sidebar-cta { background: var(--blog-bg-alt); border-color: var(--blog-border); }
.blog-theme-tech .blog-lead-box { background: var(--blog-bg-alt); color: var(--blog-text); }
.blog-theme-tech .blog-lead-input { background: var(--blog-bg); border-color: var(--blog-border); color: var(--blog-text); }
.blog-theme-tech .blog-search-input { background: var(--blog-bg-alt); border-color: var(--blog-border); color: var(--blog-text); }
.blog-theme-tech .blog-footer { background: var(--blog-bg-alt); border-color: var(--blog-border); }
.blog-theme-tech .blog-footer-inner { color: var(--blog-text-muted); }
.blog-theme-tech .blog-post-footer { border-color: var(--blog-border); }
.blog-theme-tech .blog-not-found h1 { color: var(--blog-text-muted); }
.blog-theme-tech .blog-not-found p { color: var(--blog-text-muted); }

/* ═══════════════════════════════════════════════════════ */
/* ── RESPONSIVE ────────────────────────────────────────── */
/* ═══════════════════════════════════════════════════════ */

@media (max-width: 900px) {
  .blog-hero { grid-template-columns: 1fr; }
  .blog-hero-lead { max-width: 400px; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-post-layout { grid-template-columns: 1fr; }
  .blog-sidebar { position: static; }
}

@media (max-width: 640px) {
  .blog-hero-title { font-size: 1.5rem; }
  .blog-hero { padding: 1.5rem; }
  .blog-post-hero { padding: 1.5rem; }
  .blog-post-title { font-size: 1.5rem; }
  .blog-main { padding: 1.5rem 1rem 3rem; }
  .blog-grid { grid-template-columns: 1fr; }
  .blog-header-inner { flex-wrap: wrap; }
}