/* navbar-blog.css — Barra sutil del blog integrada en las páginas del libro
   No interfiere con el diseño editorial del libro, solo añade un puente visual */

.blog-navbar-libro {
  position: sticky;
  top: 0;
  z-index: 1000;
  min-height: 52px;
  background: rgba(16, 23, 28, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fffaf0;
  padding: 0.55em clamp(0.8em, 3vw, 1.8em);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: -apple-system, "Helvetica Neue", "Segoe UI", sans-serif;
  font-size: 0.85em;
  border-bottom: 1px solid rgba(134, 216, 223, 0.22);
}

.blog-navbar-libro a {
  color: #dce6e7;
  text-decoration: none;
  transition: color 0.2s;
}

.blog-navbar-libro a:hover {
  color: #86d8df;
}

.blog-navbar-libro .blog-brand {
  font-weight: 700;
  font-size: 1em;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.5em;
}

.blog-navbar-libro .blog-brand-icon {
  font-size: 1.1em;
}

.blog-navbar-libro .blog-links {
  display: flex;
  gap: 1.2em;
  align-items: center;
}

.blog-navbar-libro .blog-link-volver {
  background: #c85534;
  color: white;
  padding: 0.3em 0.8em;
  border-radius: 3px;
  font-weight: 600;
}

.blog-navbar-libro .blog-link-volver:hover {
  background: #df6a47;
  color: white;
}

/* Shared chapter navigation. This file loads after each chapter's inline CSS. */
.nav-superior {
  top: 52px !important;
  z-index: 900 !important;
  min-height: 46px;
  padding: 0.55em clamp(0.8em, 3vw, 1.5em) !important;
  background: rgba(255, 253, 248, 0.96) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule) !important;
}
.nav-superior a { color: var(--ink-soft) !important; }
.nav-superior a:hover { color: var(--cyan) !important; }
.nav-superior .ubicacion {
  max-width: 62vw;
  overflow: hidden;
  color: var(--ink-mute);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-inferior {
  gap: 1rem;
  border-top: 1px solid var(--rule) !important;
  border-bottom: 0 !important;
}
.nav-inferior a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--rule) !important;
  border-radius: 7px !important;
  background: var(--paper);
}
.nav-inferior a:hover {
  background: var(--cyan-soft) !important;
  border-color: var(--cyan) !important;
  color: var(--ink) !important;
}

/* Responsive */
@media (max-width: 600px) {
  .blog-navbar-libro {
    min-height: 48px;
    padding: 0.4em 0.7em;
    font-size: 0.76em;
    flex-wrap: nowrap;
  }
  .blog-navbar-libro .blog-links {
    gap: 0.6em;
  }
  .blog-navbar-libro .blog-link-volver { padding-inline: 0.6em; }
  .nav-superior { top: 48px !important; font-size: 0.78em !important; }
  .nav-inferior { padding-inline: 1em !important; }
}