/*
 * Radar Eco · Guía — Sistema de diseño común
 * Fuente única para guia.radareco.io
 *
 * Para aplicar el mismo estilo a radareco.io y app.radareco.io:
 * importar este archivo o copiar las variables :root.
 */

:root {
  /* Colores — paleta editorial española */
  --bg: #F4EFE6;
  --bg-tint: #EBE4D6;
  --ink: #1A1816;
  --ink-soft: #4A4540;
  --ink-muted: #7A736B;
  --accent: #8B2C1E;
  --accent-soft: #B85947;
  --hairline: #C9C2B6;
  --hairline-soft: #DBD4C5;

  /* Tipografía */
  --serif-display: 'Fraunces', Georgia, serif;
  --serif-body: 'Spectral', 'Times New Roman', serif;

  /* Espaciado */
  --gap-s: 0.6rem;
  --gap-m: 1.2rem;
  --gap-l: 2rem;
  --gap-xl: 3rem;

  /* Anchura de lectura */
  --width-article: 720px;
  --width-page: 1100px;
}

/* RESET */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif-body);
  font-size: 18px;
  line-height: 1.7;
  font-weight: 400;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Grano sutil de fondo — papel */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/></svg>");
  z-index: 1;
  mix-blend-mode: multiply;
}

main, .site-header, .site-footer, header, footer { position: relative; z-index: 2; }

/* HEADER GLOBAL */
.site-header {
  border-bottom: 1px solid var(--hairline);
  padding: 1.3rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--serif-display);
  background: rgba(244, 239, 230, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.wordmark {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink);
  text-decoration: none;
  font-variation-settings: "SOFT" 30, "opsz" 144;
  line-height: 1;
}

.wordmark .dot { color: var(--accent); margin: 0 0.15em; font-weight: 400; }

.wordmark .guia {
  font-style: italic;
  font-weight: 400;
  color: var(--ink-soft);
  font-variation-settings: "SOFT" 80, "opsz" 144;
}

.site-nav {
  display: flex;
  gap: 1.6rem;
  font-size: 0.92rem;
  font-family: var(--serif-body);
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, color 0.25s;
}

.site-nav a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.site-nav a.active { color: var(--ink); border-bottom-color: var(--ink); }

/* MAIN */
main { flex: 1; padding: 3rem 2rem 5rem; }

.article-wrap, .article {
  max-width: var(--width-article);
  margin: 0 auto;
}

/* BREADCRUMBS */
.breadcrumbs {
  font-family: var(--serif-display);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 2rem;
  font-weight: 500;
}

.breadcrumbs a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.breadcrumbs a:hover { border-bottom-color: var(--accent); }
.breadcrumbs .sep { margin: 0 0.7em; color: var(--hairline); }

/* CABECERA DE TRANSPARENCIA (artículos) */
.cabecera-transparencia {
  background: var(--bg-tint);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.3rem;
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
  line-height: 1.55;
}

.cabecera-transparencia p { margin: 0 0 0.4rem 0; }
.cabecera-transparencia p:last-child { margin-bottom: 0; color: var(--ink-soft); }
.cabecera-transparencia strong { color: var(--ink); font-weight: 500; }

.cabecera-transparencia a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
}

/* CONTENIDO EDITORIAL DEL ARTÍCULO */
.articulo h1 {
  font-family: var(--serif-display);
  font-size: clamp(2.1rem, 4.5vw, 3rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1.8rem;
  font-variation-settings: "SOFT" 0, "opsz" 144;
}

.articulo h2 {
  font-family: var(--serif-display);
  font-size: 1.55rem;
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 2.5rem 0 1.1rem;
  font-variation-settings: "SOFT" 20, "opsz" 90;
}

.articulo h3 {
  font-family: var(--serif-display);
  font-size: 1.2rem;
  font-weight: 500;
  margin: 1.8rem 0 0.8rem;
  color: var(--ink);
}

.articulo p { margin-bottom: 1.2rem; color: var(--ink); }
.articulo ul, .articulo ol { margin: 1rem 0 1.4rem 1.5rem; }
.articulo li { margin-bottom: 0.5rem; }
.articulo strong { font-weight: 500; color: var(--ink); }

.articulo a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  transition: color 0.2s, border-color 0.2s;
}

.articulo a:hover { color: var(--accent-soft); border-bottom-color: var(--accent); }

.articulo .resumen {
  background: var(--bg-tint);
  padding: 1.3rem 1.5rem;
  border-radius: 2px;
  margin: 1.5rem 0 2rem;
}

.articulo .resumen ul { margin: 0; list-style: none; padding: 0; }

.articulo .resumen li {
  padding-left: 1.4rem;
  position: relative;
  margin-bottom: 0.6rem;
}

.articulo .resumen li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

/* PÁGINA /sobre/ — drop cap y eyebrow */
.eyebrow {
  font-family: var(--serif-display);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.6rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.eyebrow::before, .eyebrow::after {
  content: '';
  flex: 0 0 24px;
  height: 1px;
  background: var(--accent);
}
.eyebrow::after { flex: 1; }

h1.article-title {
  font-family: var(--serif-display);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 2.5rem;
  font-variation-settings: "SOFT" 0, "opsz" 144;
}

h1.article-title em {
  font-style: italic;
  font-weight: 300;
  color: var(--accent);
  font-variation-settings: "SOFT" 80, "opsz" 144;
}

.article > p {
  margin-bottom: 1.5rem;
  color: var(--ink);
  font-size: 1.08rem;
}

.article > p:first-of-type::first-letter {
  font-family: var(--serif-display);
  font-size: 4.2rem;
  font-weight: 400;
  float: left;
  line-height: 0.9;
  margin: 0.18em 0.12em 0 -0.05em;
  color: var(--accent);
  font-variation-settings: "SOFT" 0, "opsz" 144;
}

.article > p strong { font-weight: 500; color: var(--ink); }

.article > p a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
  transition: color 0.2s, border-color 0.2s;
}

.article > p a:hover { color: var(--accent-soft); border-bottom-color: var(--accent); }

.closing-block {
  margin-top: 2.5rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--hairline);
  font-size: 0.98rem;
  color: var(--ink-soft);
}

.closing-block p {
  margin-bottom: 0.7rem;
  font-size: 0.98rem;
}

.closing-block p:last-child { margin-bottom: 0; }

.closing-block a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-soft);
}

/* FOOTER GLOBAL */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 2.5rem 2rem 3.5rem;
  background: var(--bg);
}

.footer-wrap {
  max-width: var(--width-page);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
  font-family: var(--serif-body);
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.footer-brand {
  font-family: var(--serif-display);
  font-size: 1.05rem;
  color: var(--ink-soft);
  letter-spacing: -0.01em;
  font-variation-settings: "SOFT" 30, "opsz" 144;
}

.footer-brand .dot { color: var(--accent); }

.footer-tagline {
  font-style: italic;
  color: var(--ink-muted);
  margin-top: 0.4rem;
  font-size: 0.88rem;
  max-width: 380px;
  font-family: var(--serif-display);
  font-weight: 300;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: right;
}

.footer-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
  padding-bottom: 1px;
}

.footer-nav a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.footer-meta {
  grid-column: 1 / -1;
  margin-top: 1.3rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--hairline-soft);
  font-size: 0.82rem;
  color: var(--ink-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-meta a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--hairline);
}

/* RESPONSIVE */
@media (max-width: 720px) {
  body { font-size: 17px; }
  .site-header { padding: 1rem 1.2rem; flex-direction: column; gap: 0.6rem; align-items: flex-start; }
  .wordmark { font-size: 1.15rem; }
  .site-nav { gap: 1.2rem; font-size: 0.88rem; flex-wrap: wrap; }
  main { padding: 2rem 1.3rem 4rem; }
  .articulo h1 { font-size: clamp(1.8rem, 7vw, 2.4rem); }
  .articulo h2 { font-size: 1.35rem; }
  h1.article-title { font-size: clamp(2rem, 8vw, 2.6rem); margin-bottom: 1.8rem; }
  .article > p { font-size: 1.02rem; }
  .article > p:first-of-type::first-letter { font-size: 3.4rem; }
  .footer-wrap { grid-template-columns: 1fr; }
  .footer-nav { text-align: left; flex-direction: row; flex-wrap: wrap; gap: 1.2rem; }
  .footer-meta { flex-direction: column; gap: 0.4rem; }
}

@media (max-width: 460px) {
  .site-nav { font-size: 0.85rem; gap: 1rem; }
  .eyebrow { font-size: 0.72rem; letter-spacing: 0.15em; }
}