/* ==========================================================================
   7-ERRORES-DISENO-WEB.CSS
   Estilos del artículo de blog — hereda variables y base de /assets/css/styles.css
   Paleta: --primary #0a0f2c · --accent #00d4ff · --accent2 #0099ff
   ========================================================================== */

/* Fallback de variables por si esta hoja se usa sin styles.css */
:root {
  --primary: #0a0f2c;
  --accent: #00d4ff;
  --accent2: #0099ff;
  --bg-light: #f8fafd;
  --bg-dark: #0a0f2c;
  --text-light: #1e2937;
  --text-dark: #f1f5f9;
  --text-soft-light: #64748b;
  --text-soft-dark: #94a3b8;
  --card-bg-light: #ffffff;
  --card-bg-dark: rgba(255, 255, 255, 0.06);
  --border-light: #e2e8f0;
  --border-dark: rgba(255, 255, 255, 0.12);
}

body.post-page {
  font-family: "Inter", sans-serif;
}
.post-page h1, .post-page h2, .post-page h3, .post-page h4, .post-page h5 {
  font-family: "Space Grotesk", sans-serif;
}

/* ===== BARRA DE PROGRESO DE LECTURA ===== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  z-index: 10000;
  transition: width 0.1s ease-out;
}

/* ===== BREADCRUMB ===== */
.breadcrumb-bar {
  padding: 16px 0;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border-light);
  font-size: 0.85rem;
}
body.dark .breadcrumb-bar {
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border-dark);
}
.breadcrumb-bar a {
  color: var(--text-soft-light);
  text-decoration: none;
}
body.dark .breadcrumb-bar a { color: var(--text-soft-dark); }
.breadcrumb-bar a:hover { color: var(--accent); }
.breadcrumb-bar span[aria-current] {
  color: var(--text-light);
  font-weight: 600;
}
body.dark .breadcrumb-bar span[aria-current] { color: var(--text-dark); }
.breadcrumb-bar span:not([aria-current]) {
  color: var(--text-soft-light);
  margin: 0 6px;
}

/* ===== HERO DEL ARTÍCULO ===== */
.post-hero {
  background: linear-gradient(135deg, #0a0f2c, #123063 60%, #0a1f3f);
  color: #fff;
  padding: 70px 0 50px;
  text-align: center;
}
.post-hero-inner { max-width: 880px; margin: 0 auto; }
.post-hero .tag {
  display: inline-block;
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.35);
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 22px;
}
.post-hero h1 {
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.15;
  margin: 0 0 20px;
  color: #fff;
}
.post-lead {
  font-size: 1.15rem;
  color: #c6d3ea !important;
  max-width: 720px;
  margin: 0 auto 34px;
}
.post-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 22px;
  text-align: left;
}
.post-meta-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.post-meta-author img {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: #fff;
  padding: 6px;
}
.post-meta-author strong { display: block; color: #fff; font-size: 0.95rem; }
.post-meta-author span { color: #9fb3d1; font-size: 0.82rem; }
.post-meta-stats {
  display: flex;
  gap: 18px;
  font-size: 0.85rem;
  color: #c6d3ea;
}

.post-hero-image {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  display: block;
  margin-top: -1px;
}

/* ===== LAYOUT PRINCIPAL ===== */
.post-body { padding: 70px 0 40px; }
.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 60px;
  align-items: start;
}

/* ===== CONTENIDO ===== */
.post-content h2 {
  font-size: 1.7rem;
  margin: 3rem 0 1rem;
  color: var(--primary);
  scroll-margin-top: 110px;
}
body.dark .post-content h2 { color: var(--text-dark); }
.post-content h2:first-of-type { margin-top: 1rem; }
.post-content h3 {
  font-size: 1.2rem;
  margin: 1.8rem 0 0.8rem;
  color: var(--primary);
}
body.dark .post-content h3 { color: var(--text-dark); }
.post-content p {
  font-size: 1.03rem;
  color: var(--text-soft-light);
  margin-bottom: 1.15rem;
}
body.dark .post-content p { color: var(--text-soft-dark); }
.post-content strong { color: var(--text-light); }
body.dark .post-content strong { color: var(--text-dark); }
.post-content ul { margin: 0 0 1.4rem; padding-left: 0; list-style: none; }
.post-content ul li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: var(--text-soft-light);
}
body.dark .post-content ul li { color: var(--text-soft-dark); }
.post-content ul li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ===== TOC (dentro del artículo, versión móvil/plegable) ===== */
.post-toc {
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 18px 22px;
  margin: 1.5rem 0 2.5rem;
}
body.dark .post-toc { background: var(--card-bg-dark); border-color: var(--border-dark); }
.post-toc-toggle {
  width: 100%;
  background: none;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-light);
  cursor: pointer;
}
body.dark .post-toc-toggle { color: var(--text-dark); }
.post-toc-toggle .chev { transition: transform 0.3s; color: var(--accent); }
.post-toc.collapsed .chev { transform: rotate(-90deg); }
.post-toc-list {
  margin: 14px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}
.post-toc.collapsed .post-toc-list { display: none; }
.post-toc-list a {
  color: var(--text-soft-light);
  text-decoration: none;
  font-size: 0.94rem;
}
body.dark .post-toc-list a { color: var(--text-soft-dark); }
.post-toc-list a:hover { color: var(--accent); }

/* ===== CALLOUTS ===== */
.callout {
  background: rgba(0, 212, 255, 0.06);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 1.6rem 0;
}
.callout-warning {
  background: rgba(255, 159, 10, 0.08);
  border-left-color: #ff9f0a;
}
.callout strong {
  display: block;
  margin-bottom: 10px;
  color: var(--text-light);
}
body.dark .callout strong { color: var(--text-dark); }
.callout ul { margin-bottom: 0; }

/* ===== CHECK GRID (señales) ===== */
.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 1.5rem 0 2rem;
}
.check-item {
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 14px 18px;
  font-weight: 500;
  color: var(--text-light);
  font-size: 0.95rem;
}
body.dark .check-item { background: var(--card-bg-dark); border-color: var(--border-dark); color: var(--text-dark); }

/* ===== CTA INLINE ===== */
.cta-inline {
  background: linear-gradient(135deg, #0a1f3f, #0f3b6d);
  color: #fff;
  border-radius: 20px;
  padding: 44px 40px;
  text-align: center;
  margin: 3rem 0;
}
.cta-inline h3 { color: #fff; margin: 0 0 12px; font-size: 1.4rem; }
.cta-inline p { color: #c6d3ea !important; max-width: 560px; margin: 0 auto 22px; }
.cta-inline .btn { margin-top: 0; }

/* ===== FAQ ===== */
.faq-list { margin-top: 1.5rem; }
.faq-item {
  border-bottom: 1px solid var(--border-light);
}
body.dark .faq-item { border-color: var(--border-dark); }
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 4px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
body.dark .faq-question { color: var(--text-dark); }
.faq-icon { color: var(--accent); font-size: 1.3rem; transition: transform 0.3s; }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-answer p { padding: 0 4px 18px; margin: 0; }
.faq-item.open .faq-answer { max-height: 240px; }

/* ===== AUTOR ===== */
.author-box {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 26px;
  margin: 3rem 0 2rem;
}
body.dark .author-box { background: var(--card-bg-dark); border-color: var(--border-dark); }
.author-box img { width: 54px; height: 54px; border-radius: 50%; background: var(--primary); padding: 8px; flex-shrink: 0; }
.author-box strong { display: block; color: var(--text-light); margin-bottom: 6px; }
body.dark .author-box strong { color: var(--text-dark); }
.author-box p { margin: 0; font-size: 0.95rem; }

/* ===== RELACIONADOS ===== */
.related-box {
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 26px 30px;
  margin-bottom: 2.5rem;
}
body.dark .related-box { background: var(--card-bg-dark); border-color: var(--border-dark); }
.related-box h4 { margin: 0 0 14px; color: var(--text-light); }
body.dark .related-box h4 { color: var(--text-dark); }
.related-box ul { list-style: none; padding: 0; margin: 0; }
.related-box li { margin-bottom: 10px; }
.related-box a { color: var(--accent2); text-decoration: none; font-weight: 500; }
body.dark .related-box a { color: var(--accent); }
.related-box a:hover { text-decoration: underline; }

/* ===== COMENTARIOS ===== */
.comments-box h4 { color: var(--text-soft-light); font-weight: 500; }
body.dark .comments-box h4 { color: var(--text-soft-dark); }
.comments-box h5 { color: var(--text-light); margin-bottom: 1.2rem; }
body.dark .comments-box h5 { color: var(--text-dark); }
.comment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}
.field { display: flex; flex-direction: column; margin-bottom: 16px; }
.field label { font-size: 0.85rem; color: var(--text-light); margin-bottom: 6px; font-weight: 500; }
body.dark .field label { color: var(--text-dark); }
.field input, .field textarea {
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--card-bg-light);
  color: var(--text-light);
}
body.dark .field input, body.dark .field textarea {
  background: var(--card-bg-dark);
  border-color: var(--border-dark);
  color: var(--text-dark);
}
.check-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.86rem;
  color: var(--text-soft-light);
  margin-bottom: 20px;
  cursor: pointer;
}
body.dark .check-label { color: var(--text-soft-dark); }
.check-label input { margin-top: 3px; }
.check-label a { color: var(--accent2); }
body.dark .check-label a { color: var(--accent); }
.comment-form .btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}
.post-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}
body.dark .post-nav { border-color: var(--border-dark); }
.post-nav a { color: var(--accent2); text-decoration: none; font-weight: 500; }
body.dark .post-nav a { color: var(--accent); }
.post-nav a:hover { text-decoration: underline; }

/* ===== SIDEBAR ===== */
.post-sidebar { display: flex; flex-direction: column; gap: 26px; }
.sidebar-card {
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 24px;
}
body.dark .sidebar-card { background: var(--card-bg-dark); border-color: var(--border-dark); }
.sidebar-card h4 {
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-light);
  margin: 0 0 16px;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 10px;
}
body.dark .sidebar-card h4 { color: var(--text-dark); }

.sticky-toc { position: sticky; top: 90px; }
.sidebar-toc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.sidebar-toc-list a {
  color: var(--text-soft-light);
  text-decoration: none;
  font-size: 0.9rem;
  display: block;
  padding: 4px 0 4px 12px;
  border-left: 2px solid var(--border-light);
  transition: 0.25s;
}
body.dark .sidebar-toc-list a { color: var(--text-soft-dark); border-color: var(--border-dark); }
.sidebar-toc-list a:hover,
.sidebar-toc-list a.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

.most-viewed { list-style: none; margin: 0; padding: 0; counter-reset: item; }
.most-viewed li {
  counter-increment: item;
  margin-bottom: 14px;
  padding-left: 34px;
  position: relative;
  font-size: 0.92rem;
}
.most-viewed li::before {
  content: counter(item);
  position: absolute;
  left: 0; top: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.most-viewed a {
  color: var(--text-light);
  text-decoration: none;
  line-height: 1.4;
}
body.dark .most-viewed a { color: var(--text-dark); }
.most-viewed a:hover { color: var(--accent); }

.newsletter-card p { margin: 0 0 14px; font-size: 0.92rem; }
.newsletter-card form { display: flex; flex-direction: column; }
.newsletter-card label { font-size: 0.82rem; margin-bottom: 5px; color: var(--text-light); font-weight: 500; }
body.dark .newsletter-card label { color: var(--text-dark); }
.newsletter-card input[type="email"],
.newsletter-card input[type="text"] {
  border: 1px solid var(--border-light);
  border-radius: 10px;
  padding: 11px 14px;
  margin-bottom: 14px;
  font-family: inherit;
  background: var(--card-bg-light);
  color: var(--text-light);
}
body.dark .newsletter-card input[type="email"],
body.dark .newsletter-card input[type="text"] {
  background: var(--card-bg-dark);
  border-color: var(--border-dark);
  color: var(--text-dark);
}
.check-label.small { font-size: 0.78rem; margin-bottom: 16px; }
.btn.full { width: 100%; text-align: center; margin-top: 0; }
.privacy-note {
  font-size: 0.74rem;
  color: var(--text-soft-light) !important;
  margin: 14px 0 0;
}
body.dark .privacy-note { color: var(--text-soft-dark) !important; }
.privacy-note a { color: var(--accent2); }
body.dark .privacy-note a { color: var(--accent); }
.newsletter-success {
  margin-top: 14px;
  color: #16a34a !important;
  font-weight: 600;
  text-align: center;
}

/* ===== WHATSAPP FLOAT ===== */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 52px; height: 52px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  text-decoration: none;
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
  z-index: 500;
  transition: transform 0.3s;
}
.whatsapp-float:hover { transform: scale(1.08); }

/* ===== FADE UP (compartida con script.js) ===== */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (max-width: 980px) {
  .post-layout { grid-template-columns: 1fr; }
  .post-sidebar { order: -1; }
  .sticky-toc { display: none; }
}
@media (max-width: 640px) {
  .post-hero { padding: 50px 0 34px; }
  .post-hero-image { max-height: 260px; }
  .post-meta { flex-direction: column; align-items: flex-start; }
  .comment-grid { grid-template-columns: 1fr; }
  .cta-inline { padding: 34px 22px; }
  .whatsapp-float { bottom: 16px; right: 16px; width: 46px; height: 46px; }
}