/* ============================================================
   CLEAR FINANCE — blog.css
   Estilos para: índice de artículos, cards, layout de lectura
   Importar junto con global.css en páginas de blog/artículos
   ============================================================ */

/* ── PÁGINA ÍNDICE DE ARTÍCULOS ── */
.blog-hero {
  padding: 10rem 4rem 5rem;
  position: relative;
  overflow: hidden;
}
.blog-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(184,154,90,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.blog-hero-title {
  font-family: var(--serif);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  max-width: 700px;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.9s ease forwards 0.2s;
}
.blog-hero-title em {
  font-style: italic;
  color: var(--gold-light);
}
.blog-hero-sub {
  font-size: 0.95rem;
  color: rgba(248,246,241,0.5);
  max-width: 440px;
  line-height: 1.9;
  opacity: 0;
  animation: fadeUp 0.9s ease forwards 0.4s;
}

/* ── FILTROS POR CATEGORÍA ── */
.filters {
  padding: 0 4rem 3rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
}
.filter-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.5rem;
}
.filter-btn {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: none;
  border: 1px solid rgba(184,154,90,0.2);
  color: rgba(248,246,241,0.45);
  padding: 0.45rem 1.1rem;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 2px;
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(184,154,90,0.07);
}

/* ── GRID DE ARTÍCULOS ── */
.articles-grid {
  padding: 0 4rem 7rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5px;
  background: rgba(184,154,90,0.1);
}

/* ── CARD DE ARTÍCULO ── */
.article-card {
  background: var(--dark);
  padding: 2.8rem 2.5rem;
  position: relative;
  cursor: pointer;
  transition: background 0.3s ease;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
.article-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.4s ease;
}
.article-card:hover { background: rgba(184,154,90,0.04); }
.article-card:hover::after { width: 100%; }

.card-category {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
}
.card-title {
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 300;
  line-height: 1.25;
  margin-bottom: 1rem;
  flex: 1;
}
.card-excerpt {
  font-size: 0.83rem;
  color: rgba(248,246,241,0.45);
  line-height: 1.85;
  margin-bottom: 1.8rem;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
  margin-top: auto;
}
.card-meta-dot {
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
}
.card-featured {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(184,154,90,0.3);
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
}

/* Card destacada (ocupa 2 columnas en pantallas grandes) */
.article-card.featured-card {
  grid-column: span 2;
}
.article-card.featured-card .card-title {
  font-size: 2rem;
}

/* ── LAYOUT DE LECTURA DE ARTÍCULO ── */
.article-page {
  padding-top: var(--nav-height);
}

.article-header {
  padding: 5rem 4rem 4rem;
  max-width: 860px;
  margin: 0 auto;
  position: relative;
}
.article-header-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 100% at 50% 0%, rgba(184,154,90,0.04) 0%, transparent 70%);
  pointer-events: none;
}
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 2.5rem;
}
.article-breadcrumb a { color: var(--muted); transition: color 0.2s; }
.article-breadcrumb a:hover { color: var(--gold); }
.article-breadcrumb span { color: rgba(248,246,241,0.25); }

.article-category-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.5rem;
  display: block;
}
.article-main-title {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 300;
  line-height: 1.1;
  margin-bottom: 1.8rem;
}
.article-main-title em {
  font-style: italic;
  color: var(--gold-light);
}
.article-lead {
  font-size: 1.1rem;
  color: rgba(248,246,241,0.6);
  line-height: 1.9;
  margin-bottom: 2.5rem;
  font-family: var(--serif);
  font-weight: 300;
}
.article-info {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid rgba(184,154,90,0.12);
  border-bottom: 1px solid rgba(184,154,90,0.12);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 1rem;
}
.article-info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── CONTENIDO DEL ARTÍCULO ── */
.article-body {
  max-width: 700px;
  margin: 0 auto;
  padding: 4rem 4rem 6rem;
}
.article-body h2 {
  font-family: var(--serif);
  font-size: 1.9rem;
  font-weight: 300;
  margin: 3rem 0 1.2rem;
  color: var(--white);
}
.article-body h3 {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 300;
  margin: 2.2rem 0 1rem;
  color: var(--gold-light);
}
.article-body p {
  font-size: 0.97rem;
  color: rgba(248,246,241,0.75);
  line-height: 2;
  margin-bottom: 1.5rem;
}
.article-body ul,
.article-body ol {
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}
.article-body ul { list-style: none; }
.article-body ul li {
  position: relative;
  padding-left: 1.2rem;
  margin-bottom: 0.8rem;
  font-size: 0.97rem;
  color: rgba(248,246,241,0.7);
  line-height: 1.9;
}
.article-body ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.75rem;
}
.article-body ol {
  list-style: decimal;
  padding-left: 1.5rem;
}
.article-body ol li {
  margin-bottom: 0.8rem;
  font-size: 0.97rem;
  color: rgba(248,246,241,0.7);
  line-height: 1.9;
  padding-left: 0.4rem;
}
.article-body ol li::marker { color: var(--gold); }

.article-body strong {
  font-weight: 500;
  color: var(--white);
}
.article-body em {
  font-style: italic;
  color: var(--gold-light);
}
.article-body a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}
.article-body a:hover { color: var(--gold-light); }

/* Cita destacada */
.article-body blockquote {
  border-left: 2px solid var(--gold);
  padding: 1.5rem 2rem;
  margin: 2.5rem 0;
  background: rgba(184,154,90,0.04);
}
.article-body blockquote p {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 300;
  font-style: italic;
  color: rgba(248,246,241,0.8);
  margin: 0;
}

/* Caja de datos / key takeaway */
.key-box {
  background: var(--dark);
  border: 1px solid rgba(184,154,90,0.2);
  padding: 2rem 2.5rem;
  margin: 2.5rem 0;
  position: relative;
}
.key-box-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
  display: block;
}
.key-box p {
  margin: 0;
  color: rgba(248,246,241,0.8);
}

/* Tabla simple */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.88rem;
}
.article-body th {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid rgba(184,154,90,0.3);
  padding: 0.8rem 1rem;
  text-align: left;
}
.article-body td {
  border-bottom: 1px solid rgba(248,246,241,0.05);
  padding: 0.9rem 1rem;
  color: rgba(248,246,241,0.65);
}
.article-body tr:hover td { background: rgba(184,154,90,0.03); }

/* ── ARTÍCULOS RELACIONADOS ── */
.related-articles {
  padding: 5rem 4rem;
  background: var(--dark);
  border-top: 1px solid rgba(184,154,90,0.1);
}
.related-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 2.5rem;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5px;
  background: rgba(184,154,90,0.1);
}

/* ── RESPONSIVE BLOG ── */
@media (max-width: 1024px) {
  .blog-hero  { padding: 9rem 2.5rem 4rem; }
  .filters    { padding: 0 2.5rem 2.5rem; }
  .articles-grid { padding: 0 2.5rem 5rem; }
  .article-card.featured-card { grid-column: span 1; }
  .article-card.featured-card .card-title { font-size: 1.45rem; }
  .article-header { padding: 4rem 2.5rem 3rem; }
  .article-body   { padding: 3rem 2.5rem 5rem; }
  .related-articles { padding: 4rem 2.5rem; }
}

@media (max-width: 768px) {
  .blog-hero  { padding: 8rem 1.5rem 3rem; }
  .filters    { padding: 0 1.5rem 2rem; }
  .articles-grid { padding: 0 0 4rem; grid-template-columns: 1fr; }
  .article-header { padding: 3rem 1.5rem 2.5rem; }
  .article-body   { padding: 2.5rem 1.5rem 4rem; }
  .related-articles { padding: 3rem 1.5rem; }
  .article-info { gap: 0.8rem; }
}

/* ── BARRA DE PROGRESO DE LECTURA ── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(to right, var(--gold), var(--gold-light));
  z-index: 200;
  transition: width 0.1s linear;
}

/* ── METADATOS DEL ARTÍCULO ── */
.article-info {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 1.2rem 0;
  border-top: 1px solid rgba(184,154,90,0.12);
  border-bottom: 1px solid rgba(184,154,90,0.12);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  flex-wrap: wrap;
  margin-top: 2rem;
}
.article-info-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem 0.5rem 0;
  margin-right: 1.5rem;
  border-right: 1px solid rgba(184,154,90,0.12);
}
.article-info-item:last-child {
  border-right: none;
  margin-right: 0;
}
.article-info-item .info-icon {
  font-size: 0.75rem;
}

/* Nivel badge */
.level-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  border: 1px solid;
}
.level-badge.principiante {
  color: #7ec98f;
  border-color: rgba(126,201,143,0.3);
  background: rgba(126,201,143,0.06);
}
.level-badge.intermedio {
  color: var(--gold);
  border-color: rgba(184,154,90,0.3);
  background: rgba(184,154,90,0.06);
}
.level-badge.avanzado {
  color: #e07070;
  border-color: rgba(224,112,112,0.3);
  background: rgba(224,112,112,0.06);
}

/* ── BOTÓN COMPARTIR ── */
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1px solid rgba(184,154,90,0.25);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  border-radius: 2px;
}
.share-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.share-btn.copied {
  border-color: #7ec98f;
  color: #7ec98f;
}

/* ── TABLA DE CONTENIDOS ── */
.toc {
  background: var(--dark);
  border: 1px solid rgba(184,154,90,0.12);
  border-left: 2px solid var(--gold);
  padding: 2rem 2.5rem;
  margin: 2.5rem 0;
}
.toc-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
  display: block;
}
.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.toc-list li a {
  font-size: 0.88rem;
  color: rgba(248,246,241,0.55);
  text-decoration: none;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.toc-list li a::before {
  content: '';
  display: inline-block;
  width: 16px;
  height: 1px;
  background: rgba(184,154,90,0.3);
  flex-shrink: 0;
  transition: background 0.2s, width 0.2s;
}
.toc-list li a:hover {
  color: var(--gold);
}
.toc-list li a:hover::before {
  background: var(--gold);
  width: 24px;
}

/* ── DESTACADO VISUAL DE DATOS ── */
.data-highlight {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5px;
  background: rgba(184,154,90,0.1);
  margin: 2.5rem 0;
}
.data-highlight-item {
  background: var(--dark);
  padding: 1.8rem;
  text-align: center;
}
.data-highlight-num {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 300;
  color: var(--gold-light);
  display: block;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.data-highlight-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.5;
}

/* ── RESPONSIVE EXTRAS ── */
@media (max-width: 768px) {
  .article-info { gap: 0.8rem; }
  .article-info-item {
    padding: 0.4rem 1rem 0.4rem 0;
    margin-right: 1rem;
  }
  .data-highlight { grid-template-columns: 1fr 1fr; }
  .toc { padding: 1.5rem; }
}

/* ── NOTAS AL PIE ── */
.footnotes {
  margin: 3rem 0 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(184,154,90,0.12);
}
.footnotes-title {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1.2rem;
  display: block;
}
.footnote-item {
  display: flex;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
  align-items: baseline;
}
.footnote-num {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--gold);
  flex-shrink: 0;
  margin-top: 0.15rem;
}
.footnote-text {
  font-size: 0.78rem;
  color: rgba(248,246,241,0.4);
  line-height: 1.7;
}
.footnote-text a {
  color: rgba(184,154,90,0.7);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}
.footnote-text a:hover { color: var(--gold); }

/* Superíndice en el cuerpo */
.article-body sup {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--gold);
  cursor: default;
  margin-left: 1px;
  vertical-align: super;
  line-height: 0;
}

/* ── CARDS DE FUENTES ── */
.sources-section {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(184,154,90,0.15);
}
.sources-title {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 2rem;
  display: block;
}
.sources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5px;
  background: rgba(184,154,90,0.08);
}
.source-card {
  background: var(--dark);
  padding: 1.6rem 1.8rem;
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
  text-decoration: none;
  color: inherit;
  transition: background 0.25s;
  position: relative;
}
.source-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.35s;
}
.source-card:hover { background: rgba(184,154,90,0.04); }
.source-card:hover::after { width: 100%; }

.source-type-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
  opacity: 0.7;
}
.source-info { flex: 1; min-width: 0; }
.source-type-label {
  font-family: var(--mono);
  font-size: 0.55rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 0.35rem;
}
.source-title {
  font-size: 0.83rem;
  color: rgba(248,246,241,0.75);
  line-height: 1.4;
  margin-bottom: 0.25rem;
  font-weight: 400;
}
.source-meta {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.source-card-link .source-title {
  color: rgba(248,246,241,0.7);
}
.source-card-link:hover .source-title { color: var(--gold-light); }

@media (max-width: 768px) {
  .sources-grid { grid-template-columns: 1fr; }
}