/* ═══════════════════════════════════════════════════════
   El Canal — canal-shared.css
   Sin cookies · Sin analítica · Sin datos personales
═══════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink:         #ede5d8;
  --ink-mid:     #c4b89e;
  --ink-light:   #8a7f72;
  --rule:        #2a2825;
  --rule-soft:   #1e1c18;
  --paper:       #0c0b0a;
  --surface:     #111009;
  --surface-2:   #171512;
  --surface-3:   #1e1c18;

  /* tipos de nodo */
  --marco:       #c8a84b;
  --lenguaje:    #4a9d8f;
  --protocolo:   #8b6bbf;
  --interfaz:    #4a7fbf;
  --instancia:   #bf4a4a;
  --puerta:      #4abf7a;
  --obra:        #bf8b4a;

  --mono:  'JetBrains Mono', 'Courier New', monospace;
  --serif: 'Libre Baskerville', Georgia, serif;
  --sans:  'Source Sans 3', 'Helvetica Neue', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-mid);
  background: var(--paper);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── HEADER ─────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: rgba(12,11,10,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-logo {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}
.site-logo span {
  display: inline-block;
  margin-left: 0.75rem;
  font-size: 0.58rem;
  font-weight: 400;
  color: var(--ink-light);
  letter-spacing: 0.1em;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.nav-link {
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink-light);
  text-decoration: none;
  padding: 0.3rem 0.6rem;
  border: 1px solid transparent;
  transition: all 0.15s;
}
.nav-link:hover { color: var(--ink); border-color: var(--rule); }
.nav-link.active { color: var(--ink); border-color: var(--rule); }
.nav-sep {
  width: 1px;
  height: 16px;
  background: var(--rule);
  margin: 0 0.25rem;
}
.lang-pill {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-light);
  text-decoration: none;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--rule);
  transition: all 0.15s;
}
.lang-pill:hover, .lang-pill.active {
  color: var(--ink);
  border-color: var(--ink-light);
}

/* ── MAIN ───────────────────────────────────────────── */
.site-main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 80px 2rem 5rem;
}

/* ── SECCIÓN GENÉRICA ───────────────────────────────── */
.section {
  margin-bottom: 4rem;
}
.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule-soft);
  margin-bottom: 1.75rem;
}
.s-label {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-light);
  flex-shrink: 0;
}
.s-title {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mid);
}

/* ── NODO ───────────────────────────────────────────── */
.nodo {
  background: var(--surface);
  border: 1px solid var(--rule-soft);
  padding: 1.5rem;
  position: relative;
  transition: background 0.2s, border-color 0.2s;
  color: inherit;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.nodo:hover {
  background: var(--surface-2);
  border-color: var(--rule);
}
/* empuja relaciones y url al fondo del nodo */
.nodo .nodo-rels { margin-top: auto; padding-top: 0.75rem; flex-shrink: 0; }
.nodo .nodo-url  { margin-top: 0.6rem; flex-shrink: 0; }
/* nodo sin enlace — señal visual explícita de que no es clicable */
.nodo.no-link {
  cursor: default;
  opacity: 0.72;
  border-style: dashed;
}
.nodo.no-link:hover {
  background: var(--surface);
  border-color: var(--rule-soft);
  opacity: 0.72;
}
.nodo.no-link::after {
  content: 'sin enlace directo';
  position: absolute;
  top: 0.6rem;
  right: 0.75rem;
  font-family: var(--mono);
  font-size: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-light);
  opacity: 0.5;
}

.nodo-tipo {
  font-family: var(--mono);
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.nodo-tipo::before {
  content: '';
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  flex-shrink: 0;
}
.nodo-tipo.marco    { color: var(--marco); }
.nodo-tipo.marco::before    { background: var(--marco); }
.nodo-tipo.lenguaje { color: var(--lenguaje); }
.nodo-tipo.lenguaje::before { background: var(--lenguaje); }
.nodo-tipo.protocolo { color: var(--protocolo); }
.nodo-tipo.protocolo::before { background: var(--protocolo); }
.nodo-tipo.interfaz { color: var(--interfaz); }
.nodo-tipo.interfaz::before { background: var(--interfaz); }
.nodo-tipo.instancia { color: var(--instancia); }
.nodo-tipo.instancia::before { background: var(--instancia); }
.nodo-tipo.puerta   { color: var(--puerta); }
.nodo-tipo.puerta::before   { background: var(--puerta); }
.nodo-tipo.obra     { color: var(--obra); }
.nodo-tipo.obra::before     { background: var(--obra); }

.nodo h3 {
  font-family: var(--serif);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.45rem;
  line-height: 1.3;
}
.nodo p {
  font-size: 0.82rem;
  color: var(--ink-light);
  line-height: 1.7;
  margin-bottom: 0.6rem;
}
.nodo-rels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--rule-soft);
  align-items: flex-start;
}
.nodo-rel {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  color: var(--ink-mid);
  border: 1px solid var(--rule);
  padding: 0.2rem 0.5rem;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  display: inline-block;
  line-height: 1.2;
}
a.nodo-rel:hover {
  color: var(--ink);
  border-color: var(--ink-light);
  background: var(--surface-2);
}
.nodo-url {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--ink-light);
  margin-top: 0.6rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}
.nodo:hover .nodo-url { color: var(--ink); border-color: var(--ink-light); }

/* ── GRID DE NODOS ──────────────────────────────── */
.nodos-grid {
  display: grid;
  gap: 1px;
  background: var(--rule-soft);
  border: 1px solid var(--rule-soft);
  align-items: stretch;
  auto-rows: 1fr;
}
.nodos-1   { grid-template-columns: 1fr; }
.nodos-2   { grid-template-columns: repeat(2, 1fr); }
.nodos-3   { grid-template-columns: repeat(3, 1fr); }
.nodos-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* nodo destacado — más grande */
.nodo.destacado h3 { font-size: 1.15rem; }
.nodo.destacado p  { font-size: 0.85rem; }

/* ── FOOTER ─────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--rule-soft);
  padding: 1.75rem 0;
}
.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-copy {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--ink-light);
  letter-spacing: 0.06em;
}
.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.footer-links a {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--ink-light);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--ink); }

/* ── SEÑAL DE PERTENENCIA (para nodos externos) ─────── */
.senal-canal {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--ink-light);
  letter-spacing: 0.06em;
}
.senal-canal a {
  color: var(--ink-light);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color 0.15s;
}
.senal-canal a:hover { color: var(--ink); }

/* ── PÁGINA INTERNA — breadcrumb ────────────────────── */
.breadcrumb {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--ink-light);
  letter-spacing: 0.06em;
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.breadcrumb a {
  color: var(--ink-light);
  text-decoration: none;
  transition: color 0.15s;
}
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { opacity: 0.4; }

/* ── TABLA GENÉRICA ─────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.data-table tr { border-bottom: 1px solid var(--rule-soft); }
.data-table tr:last-child { border-bottom: none; }
.data-table td {
  padding: 0.85rem 1rem;
  vertical-align: top;
  color: var(--ink-light);
  line-height: 1.65;
}
.data-table td:first-child {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mid);
  white-space: nowrap;
  width: 160px;
  padding-top: 1rem;
}
.data-table a {
  color: var(--ink-light);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color 0.15s;
}
.data-table a:hover { color: var(--ink); }

/* ── BLOQUE DE CITA ─────────────────────────────────── */
.cita-bloque {
  border-left: 2px solid var(--rule);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  background: var(--surface);
}
.cita-bloque p {
  font-family: var(--serif);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--ink-mid);
  line-height: 1.7;
}
.cita-bloque cite {
  display: block;
  font-family: var(--mono);
  font-size: 0.58rem;
  font-style: normal;
  color: var(--ink-light);
  margin-top: 0.5rem;
  letter-spacing: 0.06em;
}

/* ── DOI / ENLACE EXTERNO ───────────────────────────── */
.doi-link {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--ink-light);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}
.doi-link:hover {
  color: var(--ink);
  border-color: var(--ink-light);
}
.doi-link::after { content: ' →'; opacity: 0.5; }

/* ── RESPONSIVE ─────────────────────────────────────── */
@media (max-width: 960px) {
  /* nodos-3 pasa a 2 columnas antes de colapsar */
  .nodos-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nodos-2, .nodos-3 { grid-template-columns: 1fr; }
  .nodos-auto { grid-template-columns: 1fr; }
  .header-inner { padding: 0 1rem; }
  .site-main { padding: 72px 1rem 4rem; }
  .footer-inner { padding: 0 1rem; }
  .data-table td:first-child { width: 100px; font-size: 0.54rem; }
  .site-nav { display: none; }
  /* logo compacto en móvil */
  .site-logo span { display: none; }
}
@media (max-width: 480px) {
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
  .nodo { padding: 1.25rem; }
}