/* ═══════════════════════════════════════════════════════════
   ARTICLES.CSS — Sección "Artículos" (articulos.html)
   ═══════════════════════════════════════════════════════════
   Estilos exclusivos de la página de artículos. No redefine
   ningún token, tipografía ni componente de css/main.css —
   solo lo reutiliza (--gold, --ink, --paper, .eyebrow, .lede,
   .btn, .card, .lamp, .reveal, .footer-*, etc.). css/main.css
   se carga siempre ANTES que este archivo en articulos.html.
   ═══════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════
   CABECERA MÍNIMA
   Mismo patrón ya usado en agendar.html (logo + volver), aquí
   con los tokens de css/main.css en vez de valores duplicados.
   ═══════════════════════════════════════════════════════════ */
.header {
  position: sticky; top: 0; z-index: 500;
  height: 64px; padding: 0 5%;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--anchor);
  border-bottom: 1px solid var(--anchor-border);
}
.header-logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-display); font-size: 0.98rem;
  color: var(--anchor-text); letter-spacing: 0.04em; white-space: nowrap;
}
.header-logo .lamp { width: 17px; height: 17px; }
.header-logo .lamp path, .header-logo .lamp circle { stroke: var(--gold-bright); }
.header-logo .lamp .bulb { fill: var(--gold-bright); }
.back-btn {
  background: transparent; border: 1px solid var(--anchor-border);
  color: var(--anchor-text-dim);
  padding: 0.5rem 1.15rem; font-size: 0.7rem; letter-spacing: 0.1em;
  text-transform: uppercase; border-radius: var(--radius);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.back-btn:hover { border-color: var(--gold); color: var(--gold-bright); }

/* ═══════════════════════════════════════════════════════════
   HERO EDITORIAL
   ═══════════════════════════════════════════════════════════ */
.articles-hero {
  position: relative;
  padding: 5.5rem 5% 4rem;
  text-align: center;
  overflow: hidden;
}
.articles-hero::before {
  content: ''; position: absolute; top: -18%; left: 50%; transform: translateX(-50%);
  width: 62%; height: 75%;
  background: radial-gradient(circle, var(--gold-wash-strong) 0%, transparent 70%);
  pointer-events: none; z-index: 0;
}
.articles-hero-inner { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }
.articles-hero .eyebrow { justify-content: center; }
.articles-hero .eyebrow::before { display: none; }
.articles-hero h1 { margin-bottom: 1.1rem; }
.articles-hero .lede { margin: 0 auto; }

/* ═══════════════════════════════════════════════════════════
   ARTÍCULO DESTACADO — composición tipo "portada de revista"
   ═══════════════════════════════════════════════════════════ */
.featured-wrap { padding: 1rem 5% 5rem; }
.featured-kicker { max-width: 1180px; margin: 0 auto 1.6rem; justify-content: center; }
.featured-kicker::before { display: none; }

.featured-card {
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 3rem; align-items: center;
  background: linear-gradient(180deg, var(--paper-card), var(--paper) 130%);
  border: 1px solid var(--border-soft); border-radius: 10px;
  padding: 2rem; box-shadow: var(--shadow-md);
  transition: border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}
.featured-card:hover { border-color: var(--gold); box-shadow: var(--shadow-lg); }

.featured-cover, .article-cover {
  position: relative; overflow: hidden; border-radius: 6px;
  border: 1px solid var(--border-soft);
  background: var(--paper-alt);
}
.featured-cover { aspect-ratio: 4/3; }
.article-cover { aspect-ratio: 4/3; }

.article-cover-fallback {
  position: absolute; inset: 0; z-index: 0;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, var(--paper-alt), var(--border-soft));
}
.article-cover-fallback .lamp { width: 30px; height: 30px; opacity: 0.55; }
.featured-cover .article-cover-fallback .lamp { width: 42px; height: 42px; }

.featured-cover img, .article-cover img {
  position: absolute; inset: 0; z-index: 1;
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}
.featured-card:hover .featured-cover img,
.article-card:hover .article-cover img { transform: scale(1.04); }

.featured-meta, .article-meta {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.7rem; letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--gold-deep); margin-bottom: 0.9rem;
}
.featured-meta .meta-dot, .article-meta .meta-dot { color: var(--ink-faint); }

.featured-content h2 { margin-bottom: 1rem; }
.featured-content .article-description {
  color: var(--ink-dim); font-size: 1.05rem; line-height: 1.85;
  margin-bottom: 1.8rem; max-width: 52ch;
}

@media (max-width: 940px) {
  .featured-card { grid-template-columns: 1fr; gap: 1.7rem; padding: 1.4rem; }
  .featured-cover { aspect-ratio: 16/10; }
}

/* ═══════════════════════════════════════════════════════════
   BIBLIOTECA — filtros + grilla editorial
   ═══════════════════════════════════════════════════════════ */
.library-wrap { padding: 0 5% 6.5rem; }
.library-inner { max-width: 1180px; margin: 0 auto; }
.library-head {
  display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between;
  gap: 1.4rem 2rem; margin-bottom: 2.6rem;
}
.library-head h2 { margin: 0; }

.articles-filters { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.filter-chip {
  font-family: var(--font-body); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.5rem 1.1rem; border: 1px solid var(--border-strong); border-radius: 20px;
  color: var(--ink-dim); background: transparent;
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.filter-chip:hover { border-color: var(--gold); color: var(--ink); }
.filter-chip.active {
  border-color: var(--gold); background: var(--gold-wash); color: var(--ink); font-weight: 500;
}

.articles-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.8rem;
}
.article-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: linear-gradient(180deg, var(--paper-card), var(--paper) 130%);
  border: 1px solid var(--border-soft); border-radius: 8px;
  box-shadow: var(--shadow-xs);
  transition: border-color var(--dur-base) var(--ease), transform var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}
.article-card:hover { border-color: var(--gold); transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.article-card-body { padding: 1.5rem 1.5rem 1.7rem; display: flex; flex-direction: column; flex: 1; }
.article-card h3 { font-weight: 400; margin-bottom: 0.6rem; }
.article-card .article-description {
  color: var(--ink-dim); font-size: 0.94rem; line-height: 1.75; margin-bottom: 1.4rem; flex: 1;
}
.article-card .article-actions-row { align-self: flex-start; }

/* ── Fila "Leer artículo" + "Descargar PDF" ── */
.article-actions-row { display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; }

.articles-empty {
  text-align: center; color: var(--ink-faint); font-size: 0.95rem;
  padding: 2.5rem 0 0.5rem; grid-column: 1 / -1;
}

@media (max-width: 600px) {
  .articles-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .featured-card { padding: 1.1rem; }
}