/* ============================================================
   Blog — Inmobiliarias Zona Sur GBA
   Estilos propios del blog, independientes de styles.css
   ============================================================ */

/* ── Variables ── */
:root {
  --blog-primary:    #1a3a5c;
  --blog-secondary:  #c8a84b;
  --blog-accent:     #e8f0fe;
  --blog-bg:         #000000;
  --blog-surface:    #ffffff;
  --blog-text:       #1e2a3a;
  --blog-muted:      #6b7a8d;
  --blog-border:     #dce3ed;
  --blog-success:    #25d366;

  --blog-font-heading: 'Playfair Display', Georgia, serif;
  --blog-font-body:    'DM Sans', 'Segoe UI', sans-serif;

  --blog-radius-sm: 6px;
  --blog-radius-md: 12px;
  --blog-radius-lg: 20px;

  --blog-shadow-sm: 0 1px 4px rgba(26,58,92,.08);
  --blog-shadow-md: 0 4px 16px rgba(26,58,92,.12);
  --blog-shadow-lg: 0 8px 32px rgba(26,58,92,.18);

  --blog-transition: .25s cubic-bezier(.4,0,.2,1);
  --blog-max-width: 1200px;
  --blog-content-width: 780px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--blog-font-body);
  background: var(--blog-bg);
  color: var(--blog-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blog-primary); text-decoration: none; transition: color var(--blog-transition); }
a:hover { color: var(--blog-secondary); }
ul { list-style: none; }

/* ── Contenedor ── */
.blog-container {
  width: 100%;
  max-width: var(--blog-max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── NAVBAR ── */
.blog-navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--blog-primary);
  box-shadow: var(--blog-shadow-md);
}

.blog-navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.blog-navbar__brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
}

.blog-navbar__brand-name {
  font-family: var(--blog-font-heading);
  font-size: 1.1rem;
  color: var(--blog-secondary);
  font-weight: 700;
}

.blog-navbar__brand-sub {
  font-size: .62rem;
  color: rgba(255,255,255,.6);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.blog-navbar__nav {
  display: flex;
  align-items: center;
  gap: .25rem;
}

.blog-navbar__nav a {
  color: rgba(255,255,255,.85);
  padding: .45rem .85rem;
  border-radius: var(--blog-radius-sm);
  font-size: .88rem;
  font-weight: 500;
  transition: all var(--blog-transition);
  text-decoration: none;
}

.blog-navbar__nav a:hover,
.blog-navbar__nav a.active {
  background: rgba(255,255,255,.12);
  color: #fff;
}

/* Hamburger */
.blog-navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
  border-radius: var(--blog-radius-sm);
}

.blog-navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--blog-transition);
}

.blog-navbar__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.blog-navbar__toggle.open span:nth-child(2) { opacity: 0; }
.blog-navbar__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Breadcrumb ── */
.blog-breadcrumb {
  background: var(--blog-surface);
  border-bottom: 1px solid var(--blog-border);
  padding: .75rem 0;
}

.blog-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
  align-items: center;
  font-size: .82rem;
  color: var(--blog-muted);
}

.blog-breadcrumb ol li + li::before { content: '/'; margin-right: .3rem; }
.blog-breadcrumb ol li a { color: var(--blog-primary); }
.blog-breadcrumb ol li a:hover { color: var(--blog-secondary); }
.blog-breadcrumb ol li:last-child { color: var(--blog-text); font-weight: 600; }

/* ── Hero del blog index ── */
.blog-hero {
  background: linear-gradient(135deg, var(--blog-primary) 0%, #0f2540 100%);
  padding: 4rem 0 3rem;
  color: #fff;
}

.blog-hero__tag {
  display: inline-block;
  background: var(--blog-secondary);
  color: var(--blog-primary);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .25rem .7rem;
  border-radius: 99px;
  margin-bottom: .75rem;
}

.blog-hero__title {
  font-family: var(--blog-font-heading);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: .75rem;
}

.blog-hero__subtitle {
  color: rgba(255,255,255,.75);
  font-size: 1rem;
  max-width: 560px;
}

/* ── Grid de artículos (index) ── */
.blog-section {
  padding: 4rem 0;
}

.blog-section__header {
  margin-bottom: 2.5rem;
}

.blog-section__header h2 {
  font-family: var(--blog-font-heading);
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--blog-primary);
  margin-bottom: .4rem;
}

.blog-section__header p {
  color: var(--blog-muted);
  font-size: .92rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

/* ── Card de artículo ── */
.blog-card {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius-lg);
  overflow: hidden;
  transition: all var(--blog-transition);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  box-shadow: var(--blog-shadow-lg);
  transform: translateY(-4px);
}

.blog-card__img {
  height: 200px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--blog-accent), #d0e4f7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
}

.blog-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card__category {
  position: absolute;
  top: .75rem;
  left: .75rem;
  background: var(--blog-primary);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  padding: .2rem .65rem;
  border-radius: 99px;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.blog-card__body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card__meta {
  font-size: .75rem;
  color: var(--blog-muted);
  margin-bottom: .6rem;
  display: flex;
  gap: .75rem;
}

.blog-card__title {
  font-family: var(--blog-font-heading);
  font-size: 1.15rem;
  color: var(--blog-primary);
  margin-bottom: .6rem;
  line-height: 1.3;
}

.blog-card__excerpt {
  font-size: .88rem;
  color: var(--blog-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}

.blog-card__link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .85rem;
  font-weight: 700;
  color: var(--blog-primary);
  border-bottom: 2px solid var(--blog-secondary);
  padding-bottom: .1rem;
  width: fit-content;
  transition: all var(--blog-transition);
}

.blog-card__link:hover {
  color: var(--blog-secondary);
}

/* ── Layout artículo individual ── */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  padding: 3rem 0 4rem;
  align-items: start;
}

/* ── Contenido del artículo ── */
.article-content {
  background: var(--blog-surface);
  border-radius: var(--blog-radius-lg);
  padding: 2.5rem;
}

.article-hero-img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--blog-radius-md);
  margin-bottom: 2rem;
  background: linear-gradient(135deg, var(--blog-accent), #d0e4f7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
}

.article-category {
  display: inline-block;
  background: var(--blog-accent);
  color: var(--blog-primary);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .25rem .7rem;
  border-radius: 99px;
  margin-bottom: .75rem;
}

.article-title {
  font-family: var(--blog-font-heading);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  color: var(--blog-primary);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  gap: 1rem;
  font-size: .8rem;
  color: var(--blog-muted);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--blog-border);
  flex-wrap: wrap;
}

.article-body h2 {
  font-family: var(--blog-font-heading);
  font-size: 1.5rem;
  color: var(--blog-primary);
  margin-top: 2.5rem;
  margin-bottom: .85rem;
  padding-bottom: .4rem;
  border-bottom: 2px solid var(--blog-secondary);
}

.article-body h3 {
  font-family: var(--blog-font-heading);
  font-size: 1.2rem;
  color: var(--blog-primary);
  margin-top: 1.75rem;
  margin-bottom: .6rem;
}

.article-body p {
  font-size: .97rem;
  color: #2d3a4a;
  line-height: 1.85;
  margin-bottom: 1.1rem;
}

.article-body ul,
.article-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1.1rem;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
  font-size: .97rem;
  color: #2d3a4a;
  line-height: 1.75;
  margin-bottom: .4rem;
}

.article-body strong { color: var(--blog-primary); }

.article-body blockquote {
  border-left: 4px solid var(--blog-secondary);
  padding: 1rem 1.5rem;
  background: var(--blog-accent);
  border-radius: 0 var(--blog-radius-sm) var(--blog-radius-sm) 0;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--blog-primary);
}

/* ── Espacios AdSense ── */
.adsense-slot {
  background: #f0f4f8;
  border: 2px dashed var(--blog-border);
  border-radius: var(--blog-radius-md);
  padding: 1.5rem;
  text-align: center;
  margin: 2rem 0;
  color: var(--blog-muted);
  font-size: .78rem;
}

.adsense-slot::before {
  content: '[ Espacio publicitario — Google AdSense ]';
  display: block;
  font-weight: 600;
  margin-bottom: .3rem;
}

/* ── Sidebar ── */
.article-sidebar {
  position: sticky;
  top: 80px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sidebar-widget {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius-lg);
  padding: 1.5rem;
}

.sidebar-widget__title {
  font-family: var(--blog-font-heading);
  font-size: 1rem;
  color: var(--blog-primary);
  margin-bottom: 1rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--blog-secondary);
}

/* Tabla de contenidos */
.toc-list {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.toc-list a {
  font-size: .85rem;
  color: var(--blog-muted);
  padding: .3rem .5rem;
  border-radius: var(--blog-radius-sm);
  display: block;
  transition: all var(--blog-transition);
}

.toc-list a:hover {
  background: var(--blog-accent);
  color: var(--blog-primary);
}

/* Artículos relacionados sidebar */
.related-list {
  display: flex;
  flex-direction: column;
  gap: .85rem;
}

.related-item {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
}

.related-item__icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.related-item__title {
  font-size: .82rem;
  font-weight: 600;
  color: var(--blog-primary);
  line-height: 1.35;
}

.related-item__title:hover { color: var(--blog-secondary); }

/* ── CTA sidebar ── */
.sidebar-cta {
  background: linear-gradient(135deg, var(--blog-primary), #0f2540);
  border-radius: var(--blog-radius-lg);
  padding: 1.5rem;
  text-align: center;
  color: #fff;
}

.sidebar-cta p {
  font-size: .88rem;
  color: rgba(255,255,255,.8);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.sidebar-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: var(--blog-success);
  color: #fff;
  padding: .65rem 1.25rem;
  border-radius: var(--blog-radius-sm);
  font-size: .85rem;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--blog-transition);
  width: 100%;
  justify-content: center;
}

.sidebar-cta__btn:hover {
  background: #1da851;
  color: #fff;
  transform: translateY(-1px);
}

/* ── Paginación ── */
.blog-pagination {
  display: flex;
  justify-content: center;
  gap: .5rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.blog-pagination a,
.blog-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--blog-radius-sm);
  font-size: .88rem;
  font-weight: 600;
  border: 1px solid var(--blog-border);
  background: var(--blog-surface);
  color: var(--blog-primary);
  transition: all var(--blog-transition);
  text-decoration: none;
}

.blog-pagination a:hover,
.blog-pagination .active {
  background: var(--blog-primary);
  color: #fff;
  border-color: var(--blog-primary);
}

/* ── Navegación entre artículos ── */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--blog-border);
}

.article-nav__item {
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius-md);
  padding: 1rem 1.25rem;
  text-decoration: none;
  transition: all var(--blog-transition);
}

.article-nav__item:hover {
  box-shadow: var(--blog-shadow-md);
  border-color: var(--blog-secondary);
}

.article-nav__label {
  font-size: .72rem;
  color: var(--blog-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .3rem;
}

.article-nav__title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--blog-primary);
  line-height: 1.3;
}

.article-nav__item--next { text-align: right; }

/* ── Footer ── */
.blog-footer {
  background: var(--blog-primary);
  color: rgba(255,255,255,.75);
  padding: 3rem 0 1.5rem;
}

.blog-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.blog-footer__brand h3 {
  font-family: var(--blog-font-heading);
  font-size: 1.1rem;
  color: var(--blog-secondary);
  margin-bottom: .5rem;
}

.blog-footer__brand p { font-size: .85rem; line-height: 1.6; }

.blog-footer__col h4 {
  color: #fff;
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .85rem;
}

.blog-footer__col ul li + li { margin-top: .4rem; }

.blog-footer__col ul li a {
  font-size: .83rem;
  color: rgba(255,255,255,.65);
  transition: color var(--blog-transition);
}

.blog-footer__col ul li a:hover { color: var(--blog-secondary); }

.blog-footer__bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
}

.blog-footer__bottom p { font-size: .8rem; }

.blog-footer__credit {
  font-size: .8rem;
  color: var(--blog-secondary);
  font-weight: 600;
}

.blog-footer__credit a { color: var(--blog-secondary); }

/* ── Back to top ── */
.blog-back-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: var(--blog-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--blog-shadow-md);
  display: none;
  align-items: center;
  justify-content: center;
  transition: all var(--blog-transition);
  z-index: 900;
}

.blog-back-top.visible { display: flex; }
.blog-back-top:hover { background: var(--blog-secondary); transform: translateY(-2px); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    position: static;
  }
}

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

@media (max-width: 640px) {
  .blog-navbar__nav {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--blog-primary);
    padding: 1rem;
    gap: .25rem;
    z-index: 999;
  }
  .blog-navbar__nav.open { display: flex; }
  .blog-navbar__toggle { display: flex; }
  .blog-navbar__inner { position: relative; }

  .article-content { padding: 1.5rem; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav__item--next { text-align: left; }
  .blog-footer__grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .blog-footer__bottom { flex-direction: column; text-align: center; }
}