/* ARVELA Innovación — sistema visual único
   Un único lenguaje de diseño para toda la web: tipografía, color, espacios,
   radios, sombras, botones, tarjetas, tablas, contenido y responsive. */

:root {
  --accent: #1f6feb;
  --accent-hover: #1859bd;
  --accent-soft: #eef4ff;
  --text: #172033;
  --muted: #5f6b85;
  --bg: #f6f7fb;
  --card: #ffffff;
  --surface-soft: #f8fafc;
  --line: #e6e9f2;
  --dark: #172033;
  --warning: #9a6700;
  --warning-soft: #fffaf0;
  --radius: 22px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --shadow: 0 18px 50px rgba(16, 24, 40, 0.08);
  --shadow-sm: 0 10px 28px rgba(16, 24, 40, 0.06);
  --max: 1100px;
  --article: 760px;
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at top, #fff 0%, var(--bg) 54%, #eef2ff 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.62;
}
img { max-width: 100%; }
a { color: inherit; }
.wrap { width: min(calc(100% - 32px), var(--max)); margin-inline: auto; }
main { min-height: 55vh; }
section { padding: 18px 0; }
h1, h2, h3 { color: var(--text); }
h1, h2 { letter-spacing: -0.03em; }
p { text-wrap: pretty; }

/* Header */
#header-container:empty { min-height: 106px; }
header { padding: 22px 0 10px; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 18px;
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(230,233,242,.96);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}
.brand { display: flex; min-width: 0; align-items: center; gap: 14px; }
.logo-box,
.logo-box img img { width: 100%; height: 100%; display: block; object-fit: cover; }
.brand-title,
.brand strong { margin: 0; font-size: 1rem; line-height: 1.15; letter-spacing: .02em; }
.brand-text p,
.brand span { display: block; margin: 4px 0 0; color: var(--muted); font-size: .92rem; }
nav { display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px; }
nav a {
  padding: 8px 10px;
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  font-size: .93rem;
  transition: color .2s ease, background .2s ease;
}
nav a:hover,
nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); }

/* Navegación secundaria */
.breadcrumb { margin: 18px 0 0; color: var(--muted); font-size: .92rem; }
.breadcrumb a { color: var(--accent); font-weight: 700; text-decoration: none; }

/* Hero */
.hero { padding: 28px 0 18px; }
.hero-grid { display: grid; grid-template-columns: 1.35fr .9fr; gap: 18px; align-items: stretch; }
.hero-main { padding: 34px; }
.hero-side { display: grid; gap: 14px; padding: 22px; }
.hero h1 { margin: 0; font-size: clamp(2.15rem, 4.5vw, 4rem); line-height: 1.06; }
.hero p { max-width: 72ch; margin: 18px 0 0; color: var(--muted); font-size: 1.05rem; }
.hero-card {
  padding: 42px;
  background: rgba(255,255,255,.94);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
}
.hero-card .lead { max-width: 900px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--accent);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* Superficies y tarjetas */
.panel,
.card,
.intro-card,
.topics-card,
.related-card,
.social-card,
.solution-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel { background: rgba(255,255,255,.88); }
.content { padding: 30px; }
.content h2,
.section-title { margin: 0 0 14px; font-size: 1.55rem; line-height: 1.2; }
.content h3 { margin-top: 24px; }
.content p,
.content li,
.section-subtitle { color: var(--muted); }
.section-subtitle { max-width: 82ch; margin: 0 0 18px; }

.cards { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.cards.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.card { padding: 22px; }
.card h3 { margin: 0 0 10px; font-size: 1.05rem; }
.card p,
.card li { color: var(--muted); }
.card p { margin: 0; }
.card ul { display: grid; gap: 8px; margin: 0; padding-left: 18px; }
.card a.more,
.solution-card a.more { display: inline-flex; margin-top: 14px; color: var(--accent); font-weight: 800; text-decoration: none; }

.mini-card {
  padding: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}
.mini-card strong { display: block; margin-bottom: 8px; font-size: 1rem; }
.mini-card span { color: var(--muted); font-size: .96rem; }

/* Etiquetas: un solo sistema cromático */
.tag,
.category,
.sector,
.topic {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .04em;
}
.tag { margin-bottom: 12px; }
.category { margin-bottom: 15px; text-transform: uppercase; letter-spacing: .07em; }
.topic { border: 1px solid #dbe6fb; color: var(--muted); }

/* Botones y CTA */
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #fff; background: var(--accent); box-shadow: 0 10px 24px rgba(31,111,235,.22); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { color: var(--text); background: #fff; border-color: var(--line); }
.dark-block {
  padding: 28px;
  background: linear-gradient(135deg, var(--dark), #263a66);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: #fff;
}
.dark-block h2,
.dark-block h3 { color: #fff; }
.dark-block p,
.dark-block li { color: rgba(255,255,255,.8); }
.dark-block { margin: 24px 0; }

/* Procesos y pasos */
.pipeline,
.process,
.architecture,
.scorecard {
  display: grid;
  grid-template-columns: repeat(6, minmax(0,1fr));
  gap: 10px;
  margin: 20px 0;
}
.process { grid-template-columns: repeat(5, minmax(0,1fr)); }
.scorecard { grid-template-columns: repeat(5, minmax(0,1fr)); }
.step,
.node,
.score {
  padding: 14px;
  text-align: center;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}
.step strong,
.node strong,
.score strong { display: block; font-size: .92rem; }
.step span,
.node span,
.score span { display: block; margin-top: 6px; color: var(--muted); font-size: .82rem; }
.steps { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin: 22px 0; }
.steps > .step { position: relative; padding: 20px; text-align: left; }
.steps > .step p { margin-bottom: 0; color: var(--muted); }
.step-number {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  margin-bottom: 12px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

/* Información destacada */
.highlight,
.warning {
  margin: 24px 0;
  padding: 22px;
  border-radius: var(--radius-md);
}
.highlight { background: var(--accent-soft); border: 1px solid #dbe6fb; }
.warning { background: var(--warning-soft); border: 1px solid #f2dfb2; }
.highlight p,
.warning p { margin: 0; }
.highlight strong,
.warning strong { display: block; margin-bottom: 7px; }
.warning strong { color: var(--warning); }

/* Contacto */
.social-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.social-card { display: flex; align-items: center; gap: 14px; padding: 20px; text-decoration: none; }
.social-card p { margin: 3px 0 0; color: var(--muted); }
.social-icon { width: 42px; height: 42px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 12px; background: var(--accent-soft); color: var(--accent); font-weight: 800; }

/* Soluciones */
.solutions-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; margin-top: 18px; }
.solution-card { position: relative; display: flex; flex-direction: column; min-height: 285px; padding: 24px; overflow: hidden; }
.solution-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 4px; background: var(--accent); }
.solution-card h2 { margin: 0 0 10px; font-size: 1.28rem; }
.solution-card p { margin: 0 0 14px; color: var(--muted); }
.solution-card ul { display: grid; gap: 6px; margin: 0 0 18px; padding-left: 18px; color: var(--muted); font-size: .96rem; }
.solution-card a.more { margin-top: auto; }

/* Tablas */
.comparison,
.matrix { width: 100%; margin: 20px 0; border-collapse: collapse; background: #fff; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); overflow: hidden; }
.comparison th,
.comparison td,
.matrix th,
.matrix td { padding: 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.comparison th,
.matrix th { color: var(--text); background: var(--surface-soft); }
.comparison td,
.matrix td { color: var(--muted); }
.matrix a { color: var(--accent); font-weight: 800; text-decoration: none; }

/* Nubes y bloques especializados */
.tech-cloud,
.topics { display: flex; flex-wrap: wrap; gap: 10px; }
.tech-cloud span { padding: 8px 12px; background: #fff; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); box-shadow: var(--shadow-sm); font-size: .92rem; font-weight: 600; }
.trl { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; margin: 24px 0; }
.trl-group { padding: 18px; background: var(--surface-soft); border: 1px solid var(--line); border-radius: var(--radius-md); }
.trl-group strong { display: block; margin-bottom: 8px; }
.trl-group p { margin: 0; color: var(--muted); }

/* Blog: portada */
.intro { display: grid; grid-template-columns: 1.35fr .65fr; gap: 18px; margin-bottom: 26px; }
.intro-card,
.topics-card { padding: 26px; }
.intro-card h2,
.topics-card h2 { margin: 0 0 10px; line-height: 1.2; }
.intro-card p,
.topics-card p { margin: 0; color: var(--muted); }
.topics { margin-top: 15px; gap: 8px; }
.articles { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; padding-bottom: 42px; }
.article-card { min-height: 330px; display: flex; flex-direction: column; padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); transition: transform .18s ease, box-shadow .18s ease; }
.article-card:hover { transform: translateY(-3px); box-shadow: 0 24px 58px rgba(23,32,51,.11); }
.article-card h3 { margin: 0; font-size: 1.25rem; line-height: 1.25; }
.article-card p { flex: 1; margin: 14px 0 0; color: var(--muted); font-size: .95rem; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.article-meta span { color: var(--muted); font-size: .82rem; }
.article-meta a { color: var(--accent); font-weight: 800; text-decoration: none; white-space: nowrap; }

/* Blog: artículos */
.layout { display: grid; grid-template-columns: minmax(0,var(--article)) 290px; justify-content: center; align-items: start; gap: 28px; padding: 12px 0 38px; }
.layout > article {
  padding: 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.layout article h2 { margin-top: 36px; scroll-margin-top: 20px; font-size: clamp(1.55rem,3vw,2.15rem); }
.layout article h2:first-child { margin-top: 0; }
.layout article h3 { margin-top: 26px; scroll-margin-top: 20px; }
.layout article p,
.layout article li { color: var(--muted); }
.layout article li + li { margin-top: .55rem; }
.layout article ul,
.layout article ol { padding-left: 1.25rem; }
.lead { max-width: 900px; margin: 22px 0 0; color: var(--muted); font-size: 1.16rem; }
.meta { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 24px; color: var(--muted); font-size: .92rem; }
.grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin: 22px 0; }
.layout .card { background: var(--surface-soft); box-shadow: none; }
.toc { position: sticky; top: 20px; padding: 20px; background: rgba(255,255,255,.95); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.toc strong { display: block; margin-bottom: 12px; }
.toc ol { margin: 0; padding-left: 18px; }
.toc li + li { margin-top: 8px; }
.toc a { color: var(--muted); font-size: .9rem; text-decoration: none; }
.toc a:hover { color: var(--accent); }
.internal-link { color: var(--accent); font-weight: 700; text-decoration-thickness: .08em; text-underline-offset: .16em; }
.related { padding-bottom: 42px; }
.related h2 { margin-bottom: 16px; }
.related-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; }
.related-card { padding: 20px; }
.related-card span { color: var(--accent); font-size: .82rem; font-weight: 800; }
.related-card h3 { margin: 9px 0; font-size: 1.08rem; }
.related-card p { color: var(--muted); font-size: .93rem; }
.related-card a { color: var(--accent); font-weight: 800; text-decoration: none; }

/* Footer */
/* Footer */
.arvela-footer {
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 22px 0;
  font-size: .92rem;
}
.arvela-footer__inner {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.arvela-footer__name {
  color: var(--text);
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .02em;
}
.arvela-footer__social {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
}
.arvela-footer__social a {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  color: var(--muted);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: color .15s ease, border-color .15s ease, transform .15s ease;
}
.arvela-footer__social a:hover {
  color: var(--text);
  border-color: #cbd3df;
  transform: translateY(-1px);
}
.arvela-footer__social svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}


/* Responsive */
@media (max-width: 900px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  nav { justify-content: flex-start; }
  .hero-grid,
  .intro,
  .layout { grid-template-columns: 1fr; }
  .toc { position: static; order: -1; }
  .cards.three,
  .articles,
  .related-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .pipeline,
  .architecture { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .process,
  .scorecard { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 640px) {
  .wrap { width: min(calc(100% - 22px), var(--max)); }
  #header-container:empty { min-height: 150px; }
  header { padding-top: 12px; }
  .topbar { padding: 14px; border-radius: var(--radius-md); }
  .hero { padding-top: 18px; }
  .hero-main,
  .hero-card,
  .content,
  .layout > article { padding: 22px; }
  .hero-side { padding: 16px; }
  .hero h1 { font-size: clamp(2rem,11vw,2.65rem); }
  .cards,
  .cards.three,
  .solutions-grid,
  .articles,
  .related-grid,
  .social-grid,
  .steps,
  .grid,
  .trl,
  .pipeline,
  .architecture,
  .process,
  .scorecard { grid-template-columns: 1fr; }
  .article-card { min-height: auto; }
  .comparison,
  .matrix { display: block; overflow-x: auto; }
  .dark-block { padding: 22px; }
}
.muted-text { color: var(--muted); }

/* CTA final común */
.site-cta {
  margin-top: 34px;
  padding: 34px;
  background: linear-gradient(135deg, var(--dark), #263a66);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: #fff;
}
.site-cta h2 { margin: 0; color: #fff; font-size: clamp(1.75rem, 3vw, 2.35rem); line-height: 1.15; }
.site-cta p { max-width: 760px; margin: 12px 0 0; color: rgba(255,255,255,.82); }
.site-cta .cta-row { margin-top: 22px; }
.site-cta .btn-primary { background: #fff; color: var(--text); box-shadow: none; }
.site-cta .btn-primary:hover { background: #f2f6ff; }

@media (max-width: 560px) {
  .arvela-footer__inner {
    flex-direction: column;
    justify-content: center;
    text-align: center;
    gap: 13px;
  }
}

/* Header compacto en móvil */
@media (max-width: 640px) {
  #header-container:empty { min-height: 128px; }

  header { padding-top: 8px; }

  .topbar {
    padding: 11px 12px;
    gap: 10px;
  }

  nav {
    gap: 5px;
    width: 100%;
  }

  nav a {
    padding: 7px 9px;
    font-size: .86rem;
    line-height: 1.2;
  }
}