/* Blog (static/blog/*.html): estilos comunes de los posts.
   Se enlaza con el parcial head-blog.html (asset() con hash de versión).
   Lo que solo usa un post sigue inline en ese post. */
/* ══════════════════════════════════════════════
   VIQUS DESIGN TOKENS
══════════════════════════════════════════════ */
:root {
  --bg:               #0A1A21;
  --bg-secondary:     #0F2329;
  --card-bg:          #142A35;
  --card-hover:       #1A3442;
  --text-primary:     #E8F4F8;
  --text-secondary:   #A8D4DB;
  --text-muted:       #6B9AA8;
  --border:           #2A4A5A;
  --accent:           #F0B44F;
  --accent-text:      #F0B44F;
  --accent-secondary: #40C0C0;
  --accent-gradient:  linear-gradient(135deg, #F0B44F 0%, #40C0C0 100%);
  --tag-bg:           #0F3D4A;
  --tag-text:         #40C0C0;
  --header-bg:        rgba(10,26,33,0.85);
  --glass-bg:         rgba(20,42,53,0.6);
  --gradient-mesh:
    radial-gradient(circle at 20% 30%, rgba(240,180,79,0.03) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(64,192,192,0.04) 0%, transparent 40%);
}

.light-mode {
  --bg:               #F7FAFB;
  --bg-secondary:     #F1F7F9;
  --card-bg:          #FFFFFF;
  --card-hover:       #F8FCFD;
  --text-primary:     #0A2329;
  --text-secondary:   #333333;
  --text-muted:       #9d9d9d;
  --border:           #E1EEF2;
  --accent:           #D4861F;
  --accent-text:      #9A5B0E;
  --accent-secondary: #1A7A7A;
  --accent-gradient:  linear-gradient(135deg, #F0B44F 0%, #40C0C0 100%);
  --tag-bg:           #E8F8F9;
  --tag-text:         #1A7A7A;
  --header-bg:        rgba(255,255,255,0.85);
  --glass-bg:         rgba(255,255,255,0.7);
  --gradient-mesh:
    radial-gradient(circle at 20% 30%, rgba(212,134,31,0.02) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(26,122,122,0.03) 0%, transparent 40%);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  background: var(--bg);
  background-image: var(--gradient-mesh);
  color: var(--text-secondary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background 0.3s, color 0.3s;
  min-height: 100vh;
}

a { color: var(--accent-text, var(--accent)); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.8; }

/* ── Logo display logic ── */
.dark-mode  .logo-light,
.light-mode .logo-dark  { display: none !important; }
.dark-mode  .logo-dark,
.light-mode .logo-light { display: block !important; }

/* ══════════════════════════════════════════════
   READING PROGRESS
══════════════════════════════════════════════ */
.reading-progress {
  position: fixed; top: 0; left: 0;
  height: 2px; width: 0%;
  background: var(--accent-gradient);
  z-index: 100;
  transition: width 0.1s linear;
}

/* ══════════════════════════════════════════════
   HEADER
══════════════════════════════════════════════ */
.blog-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.blog-header::before {
  content: ''; display: block; height: 2px;
  background: var(--accent-gradient); opacity: 0.6;
}
.blog-header-inner {
  max-width: 780px; margin: 0 auto;
  padding: 0 1.5rem; height: 56px;
  display: flex; align-items: center;
  justify-content: space-between; gap: 1rem;
}
.blog-header-logo img { height: 1.75rem; display: block; }

.blog-back {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.4rem 0.8rem;
  border-radius: 8px; border: 1px solid var(--border);
  background: var(--glass-bg);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.blog-back:hover {
  color: var(--accent-text, var(--accent)); border-color: rgba(240,180,79,0.3);
  background: rgba(240,180,79,0.05); opacity: 1;
}
.blog-back i { font-size: 0.65rem; }

.theme-toggle {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--glass-bg); color: var(--text-muted);
  cursor: pointer; font-size: 0.8rem;
  transition: color 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--accent-text, var(--accent)); border-color: rgba(240,180,79,0.3); }

.blog-title-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: all 0.3s ease;
}
.dark-mode .blog-title-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0.9;
}
.light-mode .blog-title-text {
  color: var(--text-muted);
  -webkit-text-fill-color: initial;
  background: none;
}

/* ══════════════════════════════════════════════
   LAYOUT
══════════════════════════════════════════════ */
.blog-layout {
  max-width: 780px;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
}

/* ══════════════════════════════════════════════
   POST HEADER
══════════════════════════════════════════════ */
.post-eyebrow {
  display: flex; align-items: center;
  gap: 0.75rem; margin-bottom: 1.5rem; flex-wrap: wrap;
}
.post-category {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent-text, var(--accent));
  background: rgba(240,180,79,0.08);
  border: 1px solid rgba(240,180,79,0.15);
  padding: 0.3rem 0.65rem; border-radius: 6px;
}
.post-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--tag-text); background: var(--tag-bg);
  padding: 0.25rem 0.6rem; border-radius: 5px;
}

.post-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  font-weight: 700; color: var(--text-primary);
  line-height: 1.2; letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}
.post-subtitle {
  font-size: 1.125rem; color: var(--text-muted);
  line-height: 1.65; margin-bottom: 2rem; max-width: 65ch;
}

.post-meta {
  display: flex; align-items: center;
  gap: 1.25rem; flex-wrap: wrap;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}
.post-meta-item {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.8rem; color: var(--text-muted);
}
.post-meta-item i { color: var(--accent-text, var(--accent)); font-size: 0.7rem; opacity: 0.8; }

.post-author { display: flex; align-items: center; gap: 0.6rem; }
.post-author-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent-gradient);
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem; font-weight: 700; color: #0A1A21; flex-shrink: 0;
}
.post-author-name { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); }
.post-author-role { font-size: 0.7rem; color: var(--text-muted); }

.meta-dot {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--border); flex-shrink: 0;
}

/* ══════════════════════════════════════════════
   COVER IMAGE
══════════════════════════════════════════════ */
.post-cover {
  width: 100%; height: auto; aspect-ratio: 16/9; object-fit: cover;
  border-radius: 14px; border: 1px solid var(--border);
  display: block; margin-bottom: 3rem;
}
.post-cover-placeholder {
  width: 100%; aspect-ratio: 16/9;
  border-radius: 14px; border: 1px solid var(--border);
  background: var(--card-bg);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 3rem; overflow: hidden; position: relative;
}
.post-cover-placeholder::before {
  content: ''; position: absolute; inset: 0;
  background:
    linear-gradient(135deg, rgba(240,180,79,0.04) 0%, transparent 50%),
    linear-gradient(225deg, rgba(64,192,192,0.04) 0%, transparent 50%);
}
.post-cover-placeholder i {
  font-size: 3rem; color: var(--accent-text, var(--accent)); opacity: 0.2; position: relative;
}

/* ══════════════════════════════════════════════
   ARTICLE BODY
══════════════════════════════════════════════ */
.post-body {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.8;
}
.post-body h2 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.5rem; font-weight: 700;
  color: var(--text-primary); letter-spacing: -0.025em;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem; border-bottom: 1px solid var(--border);
}
.post-body h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.15rem; font-weight: 700;
  color: var(--text-primary); margin: 2rem 0 0.75rem;
}
.post-body h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem; font-weight: 700;
  color: var(--accent-text, var(--accent)); text-transform: uppercase;
  letter-spacing: 0.06em; margin: 1.75rem 0 0.5rem;
}
.post-body p { margin-bottom: 1.5rem; }
.post-body a {
  color: var(--accent-text, var(--accent)); text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(240,180,79,0.4);
}
.post-body a:hover { text-decoration-color: var(--accent); opacity: 1; }
.post-body strong, .post-body b { color: var(--text-primary); font-weight: 600; }
.post-body em { color: var(--text-muted); font-style: italic; }
.post-body ul, .post-body ol { margin: 1rem 0 1.5rem 1.25rem; }
.post-body li { margin-bottom: 0.5rem; }
.post-body ul li::marker { color: var(--accent-text, var(--accent)); }
.post-body ol li::marker {
  color: var(--accent-text, var(--accent)); font-family: 'JetBrains Mono', monospace; font-size: 0.85rem;
}
.post-body blockquote {
  margin: 2rem 0; padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--accent);
  background: rgba(240,180,79,0.04);
  border-radius: 0 10px 10px 0;
  color: var(--text-muted); font-style: italic;
}
.post-body blockquote p { margin: 0; }
.post-body code {
  font-family: 'JetBrains Mono', monospace; font-size: 0.85em;
  background: rgba(64,192,192,0.08); color: var(--accent-secondary);
  border: 1px solid rgba(64,192,192,0.15);
  padding: 0.15em 0.4em; border-radius: 5px;
}
.post-body pre {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.25rem 1.5rem;
  overflow-x: auto; margin: 1.5rem 0 2rem;
}
.post-body pre code {
  background: none; border: none; padding: 0;
  font-size: 0.875rem; color: var(--text-secondary);
}
.post-body img {
  width: 100%; border-radius: 10px;
  border: 1px solid var(--border); margin: 1.5rem 0;
}
.post-body hr {
  border: none; height: 1px;
  background: var(--border); margin: 3rem 0; opacity: 0.6;
}

/* ── Callout blocks ── */
.callout {
  display: flex; gap: 1rem;
  padding: 1.25rem 1.5rem; border-radius: 12px;
  border: 1px solid var(--border); background: var(--glass-bg);
  margin: 2rem 0;
}
.callout-icon { font-size: 1rem; flex-shrink: 0; margin-top: 1px; }
.callout-body { flex: 1; font-size: 0.9rem; color: var(--text-muted); }
.callout-body strong { color: var(--text-primary); display: block; margin-bottom: 0.35rem; }
.callout.info    { border-color: rgba(64,192,192,0.2);  background: rgba(64,192,192,0.04); }
.callout.info    .callout-icon { color: var(--accent-secondary); }
.callout.warning { border-color: rgba(240,180,79,0.2);  background: rgba(240,180,79,0.04); }
.callout.warning .callout-icon { color: var(--accent-text, var(--accent)); }
.callout.tip     { border-color: rgba(52,211,153,0.2);  background: rgba(52,211,153,0.04); }
.callout.tip     .callout-icon { color: #34d399; }

/* ══════════════════════════════════════════════
   POST FOOTER — tags + share
══════════════════════════════════════════════ */
.post-footer {
  margin-top: 4rem; padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.post-footer-row {
  display: flex; align-items: center;
  justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.post-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.share-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-muted); margin-right: 0.25rem;
}
.share-btns { display: flex; align-items: center; gap: 0.4rem; }
.share-btn {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--glass-bg); color: var(--text-muted);
  font-size: 0.8rem; cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  text-decoration: none;
}
.share-btn:hover {
  color: var(--accent-text, var(--accent)); border-color: rgba(240,180,79,0.3);
  background: rgba(240,180,79,0.06); opacity: 1;
}

.copy-toast {
  position: fixed; bottom: 2rem; right: 2rem;
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 0.65rem 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem; color: var(--accent-text, var(--accent));
  display: flex; align-items: center; gap: 0.5rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  opacity: 0; transform: translateY(8px);
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none; z-index: 200;
}
.copy-toast.show { opacity: 1; transform: translateY(0); }

/* ══════════════════════════════════════════════
   RELATED POSTS
══════════════════════════════════════════════ */
.related-section {
  margin-top: 5rem; padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}
.related-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-text, var(--accent)); margin-bottom: 1.5rem; opacity: 0.85;
}
.related-grid {
  display: grid; grid-template-columns: 1fr; gap: 1rem;
}
@media (min-width: 560px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 780px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }

.related-card {
  display: flex; flex-direction: column;
  background: var(--glass-bg); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.25rem;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
  position: relative; overflow: hidden;
}
.related-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--accent-gradient); opacity: 0; transition: opacity 0.2s;
}
.related-card:hover {
  border-color: rgba(240,180,79,0.2);
  background: var(--card-hover);
  transform: translateY(-2px); opacity: 1;
}
.related-card:hover::before { opacity: 0.6; }
.related-card-cat {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent-text, var(--accent)); margin-bottom: 0.6rem;
}
.related-card-title {
  font-size: 0.9rem; font-weight: 600;
  color: var(--text-primary); line-height: 1.4;
  flex: 1; margin-bottom: 0.75rem;
}
.related-card-date { font-size: 0.72rem; color: var(--text-muted); }

/* ══════════════════════════════════════════════
   PAGE FOOTER
══════════════════════════════════════════════ */
.blog-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
  overflow: hidden;
}
.blog-footer-glow {
  height: 1px;
  background: linear-gradient(90deg,
    transparent 10%, rgba(240,180,79,0.4) 35%,
    rgba(240,180,79,0.65) 50%, rgba(240,180,79,0.4) 65%, transparent 90%);
}
.blog-footer-inner {
  max-width: 780px; /* Alineado con el diseño estrecho del post */
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: flex; flex-direction: column;
  align-items: center; gap: 2rem; text-align: center;
}

.footer-left, .footer-right {
  display: flex; flex-direction: column; gap: 1rem; align-items: center;
}

.footer-logo img { height: 1.5rem; width: auto; }
.footer-copy { font-size: 0.75rem; color: var(--text-muted); line-height: 1.6; }

.footer-socials { display: flex; gap: 1.25rem; align-items: center; }
.social-icon {
  color: var(--text-muted); font-size: 1.1rem;
  transition: color 0.2s, transform 0.2s;
}
.social-icon:hover { color: var(--accent-text, var(--accent)); transform: translateY(-2px); }

.footer-links { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; justify-content: center; }
.footer-link {
  font-size: 0.75rem; color: var(--text-muted);
  text-decoration: none; transition: color 0.2s;
}
.footer-link:hover { color: var(--accent-text, var(--accent)); opacity: 1; }

@media (min-width: 640px) {
  .blog-footer-inner {
    flex-direction: row; justify-content: space-between; text-align: left;
  }
  .footer-left { align-items: flex-start; }
  .footer-right { align-items: flex-end; }
  .footer-socials { justify-content: flex-end; }
}

/* ── Responsive ── */
@media (max-width: 480px) {
  .blog-layout { padding: 2rem 1.25rem 5rem; }
  .post-title  { font-size: 1.6rem; }
}

/* ══════════════════════════════════════════════
   ACCESIBILIDAD
══════════════════════════════════════════════ */
.vq-skip-link {
  position: fixed; left: 1rem; top: -100px; z-index: 2000;
  padding: 0.75rem 1rem; border-radius: 8px;
  background: var(--card-bg); color: var(--text-primary);
  border: 2px solid var(--accent); font-weight: 600; text-decoration: none;
}
.vq-skip-link:focus { top: 1rem; opacity: 1; }
:focus-visible { outline: 2px solid var(--accent-text, var(--accent)); outline-offset: 2px; }

/* ══════════════════════════════════════════════
   NEWSLETTER (parcial newsletter-blog.html)
══════════════════════════════════════════════ */
.blog-newsletter {
  margin-top: 4rem; padding: 1.75rem 1.5rem;
  border: 1px solid var(--border); border-radius: 14px;
  background: var(--glass-bg);
}
.blog-newsletter-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-text, var(--accent)); margin-bottom: 0.5rem;
}
.blog-newsletter-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.15rem; font-weight: 700; color: var(--text-primary);
  margin-bottom: 0.4rem;
}
.blog-newsletter-desc { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.25rem; }
.blog-newsletter-form { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.blog-newsletter-input {
  flex: 1 1 220px; min-width: 0;
  padding: 0.65rem 0.9rem; border-radius: 8px;
  border: 1px solid var(--border); background: var(--bg);
  color: var(--text-primary); font: inherit; font-size: 0.9rem;
}
.blog-newsletter-btn {
  padding: 0.65rem 1.1rem; border-radius: 8px; border: none;
  background: var(--accent-gradient); color: #0A1A21;
  font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; font-weight: 700;
  cursor: pointer; transition: opacity 0.2s;
}
.blog-newsletter-btn:hover { opacity: 0.85; }
.blog-newsletter-btn:disabled { cursor: default; opacity: 0.7; }
.blog-newsletter-note { font-size: 0.72rem; color: var(--text-muted); margin-top: 0.75rem; }