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

:root {
  color-scheme: light;
  --azul: #1b4f8c;
  --azul-osc: #0f2f57;
  --azul-claro: #deecfa;
  --texto: #1f2937;
  --muted: #6b7280;
  --linea: #e5e7eb;
  --fondo: #f4f6f8;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  line-height: 1.6;
}

img { max-width: 100%; }
a { color: var(--azul); }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.7rem 1.25rem;
  background: var(--azul-osc);
  color: #fff;
}
.nav-brand { display: flex; align-items: center; gap: 0.6rem; color: #fff; text-decoration: none; font-weight: 600; }
.nav-mark {
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--azul);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}
.nav-links { display: flex; align-items: center; flex-wrap: wrap; gap: 0.4rem 1rem; }
.nav-links a { color: #cbd5e1; text-decoration: none; font-size: 0.92rem; }
.nav-links a:hover { color: #fff; }
.nav-cta {
  background: #fff;
  color: var(--azul-osc) !important;
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  font-weight: 600;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 58vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1.25rem;
  background:
    linear-gradient(rgba(15, 47, 87, 0.66), rgba(15, 47, 87, 0.66)),
    linear-gradient(135deg, #1b4f8c, #0f2f57);
  background-size: cover;
  background-position: center;
  color: #fff;
}
.hero.tiene-img { background-image:
    linear-gradient(rgba(15, 47, 87, 0.62), rgba(15, 47, 87, 0.62)),
    var(--hero-img); }
.hero-overlay { max-width: 46rem; }
.hero h1 { font-size: clamp(1.6rem, 4vw, 2.6rem); line-height: 1.2; }
.hero-sub, #hero-sub { margin-top: 0.75rem; color: #dbe7f5; font-size: 1.05rem; }
.hero-cta {
  display: inline-block;
  margin-top: 1.5rem;
  background: #fff;
  color: var(--azul-osc);
  padding: 0.7rem 1.4rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
}

/* ---------- Secciones ---------- */
main { max-width: 60rem; margin: 0 auto; padding: 1.5rem 1rem 2.5rem; }
.seccion {
  background: #fff;
  border: 1px solid var(--linea);
  border-radius: 12px;
  padding: 1.5rem;
  margin-top: 1.25rem;
  scroll-margin-top: 4.5rem;
}
.seccion h2 { font-size: 1.25rem; color: var(--azul-osc); margin-bottom: 0.75rem; }
.cuerpo { white-space: pre-line; color: #374151; }
.vacio { color: var(--muted); }

.btn-descarga {
  display: inline-block;
  margin-top: 1rem;
  background: var(--azul);
  color: #fff;
  text-decoration: none;
  padding: 0.6rem 1.1rem;
  border-radius: 8px;
  font-weight: 600;
}

/* ---------- Avisos ---------- */
.avisos { display: flex; flex-direction: column; gap: 0.75rem; }
.aviso {
  border: 1px solid var(--linea);
  border-left: 4px solid #64748b;
  border-radius: 8px;
  padding: 0.75rem 0.9rem;
}
.aviso-mantenimiento { border-left-color: #d97706; }
.aviso-evento { border-left-color: #2563eb; }
.aviso-noticia { border-left-color: #059669; }
.aviso-tipo {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: #475569;
  background: #f1f5f9;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
}
.aviso h3 { font-size: 1rem; margin: 0.4rem 0 0.2rem; }
.aviso-veredas { color: #64748b; font-size: 0.82rem; margin-top: 0.3rem; }

/* ---------- Pie ---------- */
.pie {
  background: var(--azul-osc);
  color: #cbd5e1;
  padding: 2rem 1.25rem 1.5rem;
}
.pie-cols {
  max-width: 60rem;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 1.5rem;
}
.pie h3 { color: #fff; font-size: 0.95rem; margin-bottom: 0.5rem; }
.pie ul { list-style: none; display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.9rem; }
.pie a { color: #dbe7f5; }
.pie-creditos {
  max-width: 60rem;
  margin: 1.5rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  text-align: center;
}
.pie-creditos strong { color: #fff; }

@media (max-width: 640px) {
  .nav { flex-direction: column; align-items: flex-start; }
  .seccion { padding: 1.15rem; }
}