/* ============================================================
   TECHMAGUI — Estilos del Blog
   Complementa styles.css (que debe cargarse antes)
   ============================================================ */

/* Hero del blog — con imagen de fondo EDITABLE (punto 11)
   IMG: reemplazar assets/img/blog-hero-fondo.jpg */
.blog-hero {
  margin-top: var(--altura-header);
  position: relative;
  background: var(--color-profundo) center/cover no-repeat;
  background-image: url('../assets/img/blog-hero-fondo.jpg');
  color: var(--blanco);
  padding: 5rem 0;
  text-align: center;
  overflow: hidden;
}
/* Overlay para legibilidad del texto sobre la foto */
.blog-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(rgba(25,77,77,0.82), rgba(25,77,77,0.88));
}
.blog-hero > * { position: relative; z-index: 1; }

.blog-hero__titulo {
  color: var(--blanco);
  font-family: var(--fuente-titulo);
  text-transform: uppercase;
  font-weight: 700;
  font-size: var(--fs-h2);
  margin-bottom: 0.75rem;
}

.blog-hero__texto {
  opacity: 0.92;
  max-width: 600px;
  margin: 0 auto;
}

/* Grid de notas del índice */
.blog-lista {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* Artículo individual (página de nota) */
.articulo {
  margin-top: var(--altura-header);
}

.articulo__hero {
  height: 380px;
  /* IMG: imagen de portada de la nota */
  background: var(--gris-claro) center/cover no-repeat;
  position: relative;
}

.articulo__hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(25,77,77,0.9), rgba(25,77,77,0.2));
}

.articulo__hero-contenido {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  padding: 2.5rem 0;
}

.articulo__categoria {
  display: inline-block;
  background: var(--color-principal);
  color: var(--blanco);
  padding: 0.3rem 1rem;
  border-radius: var(--radio-sm);
  font-size: var(--fs-small);
  font-weight: 600;
  margin-bottom: 1rem;
}

.articulo__titulo {
  color: var(--blanco);
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  max-width: 800px;
}

.articulo__meta {
  color: rgba(255,255,255,0.85);
  margin-top: 1rem;
  font-size: var(--fs-small);
}

.articulo__cuerpo {
  max-width: 760px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

.articulo__cuerpo p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  color: var(--texto-principal);
  line-height: 1.8;
}

.articulo__cuerpo h2 {
  font-size: var(--fs-h3);
  margin: 2.5rem 0 1rem;
  color: var(--color-profundo);
}

.articulo__cuerpo ul {
  margin: 0 0 1.5rem 0;
}

.articulo__cuerpo li {
  padding: 0.4rem 0 0.4rem 1.75rem;
  position: relative;
  color: var(--texto-principal);
  line-height: 1.7;
}

.articulo__cuerpo li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 9px;
  height: 9px;
  background: var(--color-principal);
  border-radius: 50%;
}

.articulo__cita {
  border-left: 4px solid var(--color-principal);
  padding: 0.5rem 0 0.5rem 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--color-comp);
  font-size: 1.15rem;
}

.articulo__cta {
  background: var(--gris-fondo);
  border-radius: var(--radio);
  padding: 2.5rem;
  text-align: center;
  margin-top: 3rem;
}

.articulo__cta h3 {
  margin-bottom: 0.75rem;
  color: var(--color-profundo);
}

.articulo__cta p {
  color: var(--texto-suave);
  margin-bottom: 1.5rem;
}

/* Volver al blog */
.blog-volver {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-principal);
  font-weight: 600;
  margin-bottom: 2rem;
  transition: gap var(--transicion);
}

.blog-volver:hover {
  gap: 0.8rem;
}

@media (max-width: 992px) {
  .blog-lista { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .blog-lista { grid-template-columns: 1fr; }
  .articulo__hero { height: 260px; }
}

/* ============================================================
   BOTONES DE NAVEGACIÓN AL FINAL DE CADA NOTA (punto 10)
   ============================================================ */
.articulo__nav {
  border-top: 1px solid rgba(25,77,77,0.1);
  margin-top: 3rem;
  padding-top: 2.5rem;
}
.articulo__nav-titulo {
  text-align: center;
  font-family: var(--fuente-texto);
  color: var(--texto-suave);
  font-size: var(--fs-small);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.articulo__nav-botones {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.articulo__nav-botones .btn {
  min-width: 200px;
  justify-content: center;
}
/* Botón secundario (contorno) para variar jerarquía */
.btn--nav-sec {
  background: var(--blanco);
  color: var(--color-principal);
  border: 2px solid var(--color-principal);
}
.btn--nav-sec:hover {
  background: var(--color-principal);
  color: var(--blanco);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .articulo__nav-botones .btn { min-width: 100%; }
}

/* ============================================================
   REFUERZO: todos los títulos Brumder del blog en MAYÚSCULAS
   (punto 4 y 14) — garantiza consistencia
   ============================================================ */
.blog-hero__titulo,
.articulo__titulo,
.articulo__seccion-titulo,
.articulo__cta h3,
.blog-card__titulo,
.articulo__nav-titulo,
.blog-lista .blog-card__titulo {
  font-family: var(--fuente-titulo);
  text-transform: uppercase;
  font-weight: 700;
}

/* Categoría del artículo también en Brumder mayúsculas */
.articulo__categoria {
  font-family: var(--fuente-titulo);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* ============================================================
   FALLBACK: notas del blog SIEMPRE visibles
   ============================================================ */
.blog-lista .blog-card { opacity: 1 !important; transform: none !important; }

/* ============================================================
   MODAL DE PREVISUALIZACIÓN DE NOTAS
   ============================================================ */
.preview-modal { position: fixed; inset: 0; background: rgba(25,77,77,0.85); backdrop-filter: blur(4px); z-index: 2000; display: flex; align-items: center; justify-content: center; padding: 1.5rem; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
.preview-modal--abierto { opacity: 1; visibility: visible; }
.preview-modal__contenido { background: var(--blanco); border-radius: var(--radio); max-width: 640px; width: 100%; max-height: 88vh; overflow-y: auto; transform: translateY(20px) scale(0.98); transition: transform 0.3s ease; box-shadow: var(--sombra-fuerte); }
.preview-modal--abierto .preview-modal__contenido { transform: translateY(0) scale(1); }
.preview-modal__img { height: 240px; background: var(--gris-claro) center/cover no-repeat; border-radius: var(--radio) var(--radio) 0 0; position: relative; }
.preview-modal__cerrar { position: absolute; top: 1rem; right: 1rem; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.95); color: var(--color-profundo); display: grid; place-items: center; cursor: pointer; transition: all var(--transicion); z-index: 2; }
.preview-modal__cerrar:hover { background: var(--color-principal); color: var(--blanco); transform: rotate(90deg); }
.preview-modal__cerrar svg { width: 22px; height: 22px; }
.preview-modal__cuerpo { padding: 2rem; }
.preview-modal__fecha { font-family: var(--fuente-texto); font-size: 0.8rem; color: var(--color-principal); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.75rem; }
.preview-modal__titulo { font-family: var(--fuente-titulo); text-transform: uppercase; font-weight: 700; color: var(--color-profundo); font-size: 1.5rem; line-height: 1.15; margin-bottom: 1rem; }
.preview-modal__extracto { color: var(--texto-principal); line-height: 1.7; margin-bottom: 1.75rem; }
.preview-modal__acciones { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.preview-modal__acciones .btn { flex: 1; min-width: 160px; justify-content: center; }