/* ═══════════════════════════════════════════════════════
   BLOG — Estilos compartidos (listado, artículo, sección landing)
   ═══════════════════════════════════════════════════════ */

:root {
  --navy:      #0b1d30;
  --blue:      #163e62;
  --teal:      #1f6e9b;
  --sky:       #3da5cc;
  --sky-light: #72c4e0;
  --white:     #ffffff;
  --off-white: #f3f7fa;
  --light-gray:#dfe8f0;
  --mid-gray:  #7a9ab3;
  --dark-text: #0d1f2e;
  --body-text: #3a5268;
  --font-sans: 'Montserrat', sans-serif;
  --font-serif: 'Lora', serif;
  --shadow-sm: 0 2px 16px rgba(11,29,48,.07);
  --shadow-md: 0 8px 36px rgba(11,29,48,.12);
  --r-md: 16px;
  --ease-out: cubic-bezier(0.0,0.0,0.2,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--dark-text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }

/* ── Tag / pill ───────────────────────────────────────── */
.blog-tag {
  display: inline-block;
  background: rgba(63,165,204,.12);
  color: var(--teal);
  border-radius: 50px;
  padding: 5px 16px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

/* ── Navbar blog ──────────────────────────────────────── */
.blog-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11,29,48,.97);
  backdrop-filter: blur(12px);
  padding: 4px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.blog-nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
}
.blog-nav-logo img { height: 64px; width: auto; border-radius: 5%; object-fit: cover; }
.blog-nav-logo strong { font-size: .9rem; color: var(--white); display: block; }
.blog-nav-logo span   { font-size: .72rem; color: var(--sky-light); }
.blog-nav-back {
  color: var(--sky-light);
  font-size: .82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 7px;
  transition: color .25s;
}
.blog-nav-back:hover { color: var(--white); }

/* ── Blog page hero / header ──────────────────────────── */
.blog-page-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
  padding: 80px 64px 56px;
  text-align: center;
  color: var(--white);
}
.blog-page-hero h1 {
  font-family: var(--font-serif);
  font-size: 2.6rem;
  color: var(--white);
  margin-bottom: .75rem;
}
.blog-page-hero h1 em { color: var(--sky-light); font-style: italic; }
.blog-page-hero p {
  color: rgba(255,255,255,.72);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Blog listing wrapper ─────────────────────────────── */
.blog-listing-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 72px 64px 96px;
}

/* ── Featured article card ────────────────────────────── */
.blog-featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out);
  margin-bottom: 3rem;
  background: var(--white);
}
.blog-featured-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 56px rgba(11,29,48,.16);
}
.blog-featured-img {
  width: 100%;
  height: 100%;
  max-height: 400px;
  object-fit: cover;
  display: block;
}
.blog-featured-img-placeholder {
  width: 100%;
  min-height: 320px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--teal) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: rgba(255,255,255,.3);
}
.blog-featured-body {
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.blog-featured-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}
.blog-featured-cat {
  background: rgba(63,165,204,.12);
  color: var(--teal);
  border-radius: 50px;
  padding: 4px 14px;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.blog-featured-date {
  font-size: .78rem;
  color: var(--mid-gray);
}
.blog-featured-body h2 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  color: var(--navy);
  line-height: 1.35;
  margin-bottom: 1rem;
}
.blog-featured-excerpt {
  color: var(--body-text);
  font-size: .92rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-read-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--navy);
  color: var(--white);
  border-radius: 50px;
  padding: 11px 24px;
  font-size: .82rem;
  font-weight: 700;
  transition: background .25s ease;
  align-self: flex-start;
}
.blog-read-btn:hover { background: var(--teal); }

/* ── Blog grid (artículos relacionados / listado) ─────── */
.blog-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 1.5rem;
  padding-bottom: .75rem;
  border-bottom: 2px solid var(--light-gray);
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.blog-card {
  background: var(--white);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform .3s var(--ease-out), box-shadow .3s var(--ease-out);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--light-gray);
}
.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--sky-light);
}
.blog-card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.blog-card-img-placeholder {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--teal) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: rgba(255,255,255,.3);
}
.blog-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: .6rem;
}
.blog-card-cat {
  background: rgba(63,165,204,.1);
  color: var(--teal);
  border-radius: 50px;
  padding: 3px 10px;
  font-size: .62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.blog-card-date {
  font-size: .7rem;
  color: var(--mid-gray);
}
.blog-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: .6rem;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card-excerpt {
  font-size: .8rem;
  color: var(--body-text);
  line-height: 1.6;
  flex: 1;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: .9rem;
}
.blog-card-link {
  font-size: .75rem;
  font-weight: 700;
  color: var(--teal);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: auto;
  transition: color .2s;
}
.blog-card-link:hover { color: var(--navy); }

/* ── Load more / paginación ───────────────────────────── */
.blog-load-more-wrap {
  text-align: center;
  margin-top: 3rem;
}
.btn-load-more {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: transparent;
  border: 2px solid var(--teal);
  color: var(--teal);
  border-radius: 50px;
  padding: 12px 28px;
  font-size: .86rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .25s, color .25s;
  font-family: var(--font-sans);
}
.btn-load-more:hover { background: var(--teal); color: var(--white); }

/* ── Empty / loading states ───────────────────────────── */
.blog-empty {
  text-align: center;
  padding: 48px;
  color: var(--mid-gray);
  font-size: .95rem;
}
.blog-spinner {
  display: flex;
  justify-content: center;
  padding: 48px;
}
.blog-spinner::after {
  content: '';
  width: 36px;
  height: 36px;
  border: 3px solid var(--light-gray);
  border-top-color: var(--teal);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ══════════════════════════════════════════════════════
   ARTÍCULO INDIVIDUAL (blog/articulo.html)
   ══════════════════════════════════════════════════════ */
.article-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 32px 96px;
}
.article-page-img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: var(--r-md);
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-md);
}
.article-page-cat-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1.25rem;
}
.article-page-date { font-size: .8rem; color: var(--mid-gray); }
.article-page h1 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  color: var(--navy);
  line-height: 1.3;
  margin-bottom: 1rem;
}
.article-page-excerpt {
  font-size: 1.05rem;
  color: var(--body-text);
  border-left: 4px solid var(--teal);
  padding-left: 1.25rem;
  margin-bottom: 2rem;
  font-style: italic;
}
.article-page-content {
  font-size: .97rem;
  color: var(--body-text);
  line-height: 1.85;
}
.article-page-content h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--navy);
  margin: 2rem 0 .75rem;
}
.article-page-content h3 {
  font-size: 1.15rem;
  color: var(--navy);
  margin: 1.5rem 0 .5rem;
  font-weight: 700;
}
.article-page-content p  { margin-bottom: 1.25rem; }
.article-page-content ul,
.article-page-content ol { padding-left: 1.5rem; margin-bottom: 1.25rem; }
.article-page-content li { margin-bottom: .4rem; }
.article-page-content blockquote {
  border-left: 4px solid var(--teal);
  padding: .75rem 1.25rem;
  background: var(--off-white);
  border-radius: 0 8px 8px 0;
  margin: 1.5rem 0;
  color: var(--navy);
  font-style: italic;
}
.article-page-content a { color: var(--teal); text-decoration: underline; }
.article-page-content strong { color: var(--navy); font-weight: 700; }

.article-cta-box {
  background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%);
  border-radius: var(--r-md);
  padding: 2rem;
  text-align: center;
  margin-top: 3rem;
  color: var(--white);
}
.article-cta-box h3 { font-family: var(--font-serif); font-size: 1.3rem; margin-bottom: .6rem; }
.article-cta-box p  { font-size: .88rem; color: rgba(255,255,255,.75); margin-bottom: 1.25rem; }
.article-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: #25D366;
  color: var(--white);
  border-radius: 50px;
  padding: 13px 28px;
  font-size: .86rem;
  font-weight: 700;
  transition: transform .25s, box-shadow .25s;
  box-shadow: 0 6px 22px rgba(37,211,102,.3);
}
.article-cta-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(37,211,102,.45); }

/* ── Related articles (artículo individual) ───────────── */
.article-related {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px 96px;
  border-top: 2px solid var(--light-gray);
  padding-top: 3rem;
}
.article-related h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--navy);
  margin-bottom: 1.5rem;
}
.article-related .blog-grid { grid-template-columns: repeat(2, 1fr); }

/* ── Modal popup (landing + blog/index) ───────────────── */
.art-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(10,20,35,.72);
  backdrop-filter: blur(6px);
  overflow-y: auto;
  padding: 40px 20px;
}
.art-modal-overlay.open { display: flex; align-items: flex-start; justify-content: center; }
.art-modal-box {
  background: var(--white);
  border-radius: 20px;
  width: 100%;
  max-width: 800px;
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,.3);
  position: relative;
  animation: modalIn .35s var(--ease-out);
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(32px) scale(.97); }
  to   { opacity: 1; transform: none; }
}
.art-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(11,29,48,.6);
  color: var(--white);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: background .2s;
}
.art-modal-close:hover { background: var(--navy); }
.art-modal-img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}
.art-modal-img-placeholder {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--teal) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: rgba(255,255,255,.3);
}
.art-modal-body {
  padding: 2rem;
}
.art-modal-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}
.art-modal-cat {
  background: rgba(63,165,204,.12);
  color: var(--teal);
  border-radius: 50px;
  padding: 4px 14px;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.art-modal-date { font-size: .75rem; color: var(--mid-gray); }
.art-modal-body h2 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  color: var(--navy);
  line-height: 1.3;
  margin-bottom: 1rem;
}
.art-modal-content {
  font-size: .92rem;
  color: var(--body-text);
  line-height: 1.8;
  max-height: 380px;
  overflow-y: auto;
  margin-bottom: 1.5rem;
  padding-right: 8px;
}
.art-modal-content h2 { font-family: var(--font-serif); font-size: 1.2rem; color: var(--navy); margin: 1.25rem 0 .5rem; }
.art-modal-content p  { margin-bottom: 1rem; }
.art-modal-content ul,
.art-modal-content ol { padding-left: 1.4rem; margin-bottom: 1rem; }
.art-modal-content blockquote {
  border-left: 3px solid var(--teal);
  padding: .5rem 1rem;
  background: var(--off-white);
  border-radius: 0 6px 6px 0;
  font-style: italic;
  margin: 1rem 0;
}
.art-modal-content::-webkit-scrollbar { width: 5px; }
.art-modal-content::-webkit-scrollbar-track { background: var(--off-white); border-radius: 5px; }
.art-modal-content::-webkit-scrollbar-thumb { background: var(--light-gray); border-radius: 5px; }
.art-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--light-gray);
  flex-wrap: wrap;
  gap: .75rem;
}
.art-modal-full-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: var(--navy);
  color: var(--white);
  border-radius: 50px;
  padding: 10px 22px;
  font-size: .8rem;
  font-weight: 700;
  transition: background .25s;
}
.art-modal-full-link:hover { background: var(--teal); }
.art-modal-share {
  font-size: .75rem;
  color: var(--mid-gray);
  display: flex;
  align-items: center;
  gap: 8px;
}
.art-modal-share a { color: var(--teal); transition: color .2s; }
.art-modal-share a:hover { color: var(--navy); }

/* ── Footer blog ──────────────────────────────────────── */
.blog-footer {
  background: var(--navy);
  text-align: center;
  padding: 32px 64px;
  color: rgba(255,255,255,.5);
  font-size: .78rem;
}
.blog-footer a { color: var(--sky-light); }

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 900px) {
  .blog-nav { padding: 16px 24px; }
  .blog-page-hero { padding: 60px 24px 40px; }
  .blog-page-hero h1 { font-size: 2rem; }
  .blog-listing-wrap { padding: 48px 24px 72px; }
  .blog-featured-card { grid-template-columns: 1fr; }
  .blog-featured-img,
  .blog-featured-img-placeholder { min-height: 220px; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .article-related .blog-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .blog-grid { grid-template-columns: 1fr; }
  .article-page { padding: 48px 16px 72px; }
  .article-related { padding: 2rem 16px 72px; }
  .article-page h1 { font-size: 1.7rem; }
  .art-modal-body h2 { font-size: 1.3rem; }
}