/* ═══════════════════════════════════════════════════
   FUENTE CENTRAL · style.css
   Tokens → Layout → Components → Utilities
   ═══════════════════════════════════════════════════ */

/* ── TOKENS ──────────────────────────────────────── */
:root {
  --c-deep:      #0F2336;   /* azul noche — cabecera, textos peso */
  --c-green:     #1A6B5C;   /* esmeralda — acción principal       */
  --c-green-dk:  #135448;   /* esmeralda oscuro — hover           */
  --c-gold:      #C8A84B;   /* dorado mostaza — firma única       */
  --c-gold-lt:   #F2E8C4;   /* dorado pálido — fondos leves       */
  --c-bg:        #F0F4F0;   /* sage muy claro — fondo global      */
  --c-card:      #FFFFFF;   /* blanco — cards                     */
  --c-card-alt:  #EEF3F1;   /* sage suave — secciones alternas    */
  --c-text:      #1E2A22;   /* casi negro — cuerpo de texto       */
  --c-muted:     #556B62;   /* verde grisáceo — secundario        */
  --c-border:    #D4DDD8;   /* borde suave                        */
  --c-accent-pos:#1A6B5C;   /* positivo (ingresos)                */
  --c-accent-neg:#B84040;   /* negativo (gastos)                  */
  --c-id-bar:    #C8A84B;   /* barra de identidad                 */

  --f-display: 'IBM Plex Serif', Georgia, serif;
  --f-body:    'Inter', system-ui, sans-serif;

  --sz-xs:  0.75rem;
  --sz-sm:  0.875rem;
  --sz-md:  1rem;
  --sz-lg:  1.125rem;
  --sz-xl:  1.375rem;
  --sz-2xl: 1.75rem;
  --sz-3xl: 2.25rem;
  --sz-4xl: 3rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-card: 0 2px 12px rgba(15,35,54,0.07);
  --shadow-hover: 0 6px 24px rgba(15,35,54,0.14);

  --max-w: 1140px;
  --transition: 0.2s ease;
}

/* ── RESET / BASE ────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--f-body);
  font-size: var(--sz-md);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a {
  color: var(--c-green);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--c-green-dk); text-decoration: underline; }
a:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── COOKIE BANNER ───────────────────────────────── */
#cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--c-deep);
  color: #fff;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  z-index: 1000;
  font-size: var(--sz-sm);
}
#cookie-banner a { color: var(--c-gold); }
#cookie-accept {
  background: var(--c-gold);
  color: var(--c-deep);
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  font-size: var(--sz-sm);
  white-space: nowrap;
  transition: background var(--transition);
}
#cookie-accept:hover { background: #b89130; }

/* ── IDENTITY BAR ────────────────────────────────── */
.identity-bar {
  background: var(--c-gold);
  color: var(--c-deep);
  text-align: center;
  padding: 0.45rem 1rem;
  font-size: var(--sz-xs);
  font-weight: 500;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

/* ── SITE HEADER ─────────────────────────────────── */
.site-header {
  background: var(--c-deep);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(0,0,0,0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff !important;
  text-decoration: none !important;
}
.brand-icon {
  font-size: 1.5rem;
  color: var(--c-gold);
  line-height: 1;
}
.brand-name {
  font-family: var(--f-display);
  font-size: var(--sz-xl);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}
.brand-name em {
  font-style: normal;
  color: var(--c-gold);
}

.main-nav {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}
.nav-link {
  color: rgba(255,255,255,0.82);
  font-size: var(--sz-sm);
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  text-decoration: none;
}
.nav-link:hover,
.nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.1);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--sz-lg);
}

.header-tagline {
  background: rgba(0,0,0,0.2);
  padding: 0.4rem 0;
}
.header-tagline p {
  font-size: var(--sz-xs);
  color: rgba(255,255,255,0.65);
  text-align: center;
}
.header-tagline a {
  color: var(--c-gold);
  opacity: 0.85;
}
.header-tagline a:hover { opacity: 1; text-decoration: none; }

/* Mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--c-deep);
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 0.75rem 1.5rem 1rem;
  gap: 0.25rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: rgba(255,255,255,0.85);
  font-size: var(--sz-md);
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.mobile-nav a:hover { color: var(--c-gold); text-decoration: none; }

/* ── HERO ────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--c-deep) 0%, #163248 60%, #1A4A3C 100%);
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-eyebrow {
  display: inline-block;
  font-size: var(--sz-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-gold);
  margin-bottom: 0.75rem;
}

.hero-title {
  font-family: var(--f-display);
  font-size: var(--sz-3xl);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--sz-lg);
  color: rgba(255,255,255,0.75);
  margin-bottom: 1.5rem;
  line-height: 1.65;
}

.hero-disclaimer {
  display: flex;
  gap: 0.75rem;
  background: rgba(200,168,75,0.12);
  border: 1px solid rgba(200,168,75,0.35);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.1rem;
  margin-bottom: 2rem;
}
.disclaimer-icon {
  font-size: 1.1rem;
  color: var(--c-gold);
  line-height: 1.6;
  flex-shrink: 0;
}
.hero-disclaimer p {
  font-size: var(--sz-sm);
  color: rgba(255,255,255,0.78);
  line-height: 1.5;
}
.hero-disclaimer strong { color: rgba(255,255,255,0.95); }

/* Ledger card visual */
.ledger-card {
  background: var(--c-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  box-shadow: 0 8px 40px rgba(0,0,0,0.3);
  border-top: 4px solid var(--c-gold);
  max-width: 380px;
  margin-left: auto;
}
.ledger-header {
  font-family: var(--f-display);
  font-size: var(--sz-sm);
  font-weight: 600;
  color: var(--c-deep);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--c-border);
}
.ledger-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  font-size: var(--sz-sm);
  color: var(--c-muted);
  border-bottom: 1px solid var(--c-border);
}
.ledger-row:last-of-type { border-bottom: none; }
.ledger-row.total {
  font-weight: 700;
  font-size: var(--sz-md);
  color: var(--c-deep);
  padding-top: 0.75rem;
}
.positive { color: var(--c-accent-pos); font-weight: 600; }
.negative { color: var(--c-accent-neg); font-weight: 500; }
.ledger-divider {
  height: 2px;
  background: var(--c-deep);
  margin: 0.5rem 0;
  border-radius: 1px;
}
.ledger-footer {
  margin-top: 1rem;
  font-size: 0.7rem;
  color: var(--c-muted);
  text-align: center;
  font-style: italic;
}

/* ── BUTTONS ─────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background: var(--c-green);
  color: #fff !important;
  font-weight: 600;
  font-size: var(--sz-md);
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-md);
  text-decoration: none !important;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  background: var(--c-green-dk);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(26,107,92,0.35);
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--c-green) !important;
  font-weight: 600;
  font-size: var(--sz-md);
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-md);
  border: 2px solid var(--c-green);
  text-decoration: none !important;
  transition: background var(--transition), color var(--transition);
}
.btn-secondary:hover {
  background: var(--c-green);
  color: #fff !important;
}

/* ── ARTICLES SECTION ────────────────────────────── */
.articles-section {
  padding: 4rem 0;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--c-deep);
  padding-bottom: 0.75rem;
}
.section-title {
  font-family: var(--f-display);
  font-size: var(--sz-2xl);
  font-weight: 700;
  color: var(--c-deep);
  letter-spacing: -0.02em;
}
.section-link {
  font-size: var(--sz-sm);
  font-weight: 600;
  color: var(--c-green);
  text-decoration: none;
}
.section-link:hover { text-decoration: underline; }

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

/* Signature element: gold ledger-line accent on left of each card */
.article-card {
  background: var(--c-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  display: flex;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}
.article-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.article-card.featured {
  grid-column: 1 / -1;
  flex-direction: row;
}

/* THE SIGNATURE: gold vertical ledger line */
.card-accent {
  width: 5px;
  flex-shrink: 0;
  background: var(--c-gold);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.card-content {
  padding: 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.card-category {
  font-size: var(--sz-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-green);
}

.card-title {
  font-family: var(--f-display);
  font-size: var(--sz-xl);
  font-weight: 700;
  color: var(--c-deep);
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.article-card:not(.featured) .card-title {
  font-size: var(--sz-lg);
}
.card-title a {
  color: inherit;
  text-decoration: none;
}
.card-title a:hover { color: var(--c-green); }

.card-excerpt {
  font-size: var(--sz-sm);
  color: var(--c-muted);
  line-height: 1.65;
  flex: 1;
}
.article-card.featured .card-excerpt {
  font-size: var(--sz-md);
}

.card-meta {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 0.5rem;
  font-size: var(--sz-xs);
  color: var(--c-muted);
  border-top: 1px solid var(--c-border);
  padding-top: 0.75rem;
}
.card-author { font-weight: 600; color: var(--c-deep); }

.read-disclaimer {
  font-size: 0.68rem;
  color: var(--c-muted);
  font-style: italic;
  margin-top: 0.25rem;
}

/* ── ABOUT STRIP ─────────────────────────────────── */
.about-strip {
  background: var(--c-deep);
  padding: 3.5rem 0;
}

.about-inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.about-text h2 {
  font-family: var(--f-display);
  font-size: var(--sz-2xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}
.about-text p {
  color: rgba(255,255,255,0.75);
  margin-bottom: 0.75rem;
  font-size: var(--sz-md);
  line-height: 1.7;
}
.about-text p strong { color: rgba(255,255,255,0.95); }
.about-text .btn-secondary {
  margin-top: 0.75rem;
  border-color: var(--c-gold);
  color: var(--c-gold) !important;
}
.about-text .btn-secondary:hover {
  background: var(--c-gold);
  color: var(--c-deep) !important;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}
.stat-number {
  font-family: var(--f-display);
  font-size: var(--sz-3xl);
  font-weight: 700;
  color: var(--c-gold);
  line-height: 1;
  margin-bottom: 0.35rem;
}
.stat-label {
  font-size: var(--sz-xs);
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── NEWSLETTER ──────────────────────────────────── */
.newsletter-section {
  background: var(--c-card-alt);
  padding: 3.5rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}

.newsletter-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.newsletter-text h2 {
  font-family: var(--f-display);
  font-size: var(--sz-2xl);
  font-weight: 700;
  color: var(--c-deep);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}
.newsletter-text p {
  color: var(--c-muted);
  font-size: var(--sz-md);
  line-height: 1.65;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.newsletter-form input {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius-md);
  font-family: var(--f-body);
  font-size: var(--sz-md);
  color: var(--c-text);
  background: #fff;
  transition: border-color var(--transition);
}
.newsletter-form input:focus {
  outline: none;
  border-color: var(--c-green);
  box-shadow: 0 0 0 3px rgba(26,107,92,0.12);
}
.form-legal {
  font-size: var(--sz-xs);
  color: var(--c-muted);
  line-height: 1.5;
}
.form-legal a { color: var(--c-green); }

.form-success {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(26,107,92,0.1);
  border: 1px solid var(--c-green);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  font-size: var(--sz-md);
  color: var(--c-green);
  font-weight: 500;
}
.form-success span { font-size: 1.25rem; }

/* ── SITE FOOTER ─────────────────────────────────── */
.site-footer {
  background: var(--c-deep);
  padding-top: 3.5rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .brand-icon { font-size: 1.5rem; color: var(--c-gold); }
.footer-brand .brand-name {
  font-family: var(--f-display);
  font-size: var(--sz-xl);
  font-weight: 700;
  color: #fff;
}
.footer-brand .brand-name em { font-style: normal; color: var(--c-gold); }
.footer-tagline {
  margin-top: 0.5rem;
  font-size: var(--sz-xs);
  color: rgba(255,255,255,0.5);
  line-height: 1.5;
}

.footer-links h3,
.footer-legal-links h3,
.footer-contact h3 {
  font-size: var(--sz-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-gold);
  margin-bottom: 0.75rem;
  font-weight: 700;
}
.footer-links a,
.footer-legal-links a {
  display: block;
  color: rgba(255,255,255,0.65);
  font-size: var(--sz-sm);
  padding: 0.25rem 0;
  text-decoration: none;
}
.footer-links a:hover,
.footer-legal-links a:hover { color: var(--c-gold); }

.footer-contact p {
  font-size: var(--sz-sm);
  color: rgba(255,255,255,0.65);
  margin-bottom: 0.35rem;
  line-height: 1.5;
}
.footer-contact strong { color: rgba(255,255,255,0.9); }
.footer-contact a { color: var(--c-gold); }
.footer-contact a:hover { color: #fff; }

.footer-disclaimer {
  background: rgba(0,0,0,0.3);
  padding: 1.5rem 0;
}
.footer-disclaimer p {
  font-size: var(--sz-xs);
  color: rgba(255,255,255,0.5);
  line-height: 1.65;
  margin-bottom: 0.5rem;
}
.footer-disclaimer p:last-child { margin-bottom: 0; }
.footer-disclaimer strong { color: rgba(255,255,255,0.75); }
.footer-disclaimer a {
  color: var(--c-gold);
  opacity: 0.8;
}
.footer-disclaimer a:hover { opacity: 1; }

/* ── RESPONSIVE ──────────────────────────────────── */
@media (max-width: 1024px) {
  .hero-title { font-size: var(--sz-2xl); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .article-card.featured { flex-direction: column; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }

  .hero { padding: 3rem 0 2.5rem; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-title { font-size: var(--sz-2xl); }
  .ledger-card { margin-left: 0; max-width: 100%; }

  .articles-grid { grid-template-columns: 1fr; }
  .article-card.featured { grid-column: auto; }

  .about-inner { grid-template-columns: 1fr; }
  .about-stats { flex-direction: row; }

  .newsletter-inner { grid-template-columns: 1fr; gap: 2rem; }

  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: var(--sz-xl); }
  .about-stats { flex-direction: column; }
  .stat-number { font-size: var(--sz-2xl); }
}

/* ── REDUCED MOTION ──────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}