@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800&family=Nunito+Sans:wght@300;400;600;700&display=swap');

:root {
  --blue: #1a3a8f;
  --blue-dark: #112970;
  --blue-light: #e8edf8;
  --red: #e8131b;
  --red-dark: #c20f16;
  --red-light: #fdeaea;
  --black: #1a1a1a;
  --white: #ffffff;
  --gray-50: #f8f9fc;
  --gray-100: #f0f2f8;
  --gray-200: #dde2ef;
  --gray-400: #8e99b8;
  --gray-600: #4a5470;
  --gray-800: #1e2340;
  --font: 'Nunito Sans', sans-serif;
  --font-display: 'Nunito', sans-serif;
  --max-width: 1200px;
  --nav-height: 68px;
  --topbar-height: 36px;
  --radius: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--gray-50); color: var(--gray-800); line-height: 1.6; }

/* ─── TOPBAR ─── */
.site-topbar {
  background: var(--blue-dark);
  height: var(--topbar-height);
  display: flex;
  align-items: center;
}
.topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar-inner span {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.06em;
}
.topbar-inner a {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color 0.2s;
}
.topbar-inner a:hover { color: var(--white); }

/* ─── NAVBAR ─── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 3px solid var(--red);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  box-shadow: 0 2px 12px rgba(26,58,143,0.1);
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-logo img {
    height: 55px;
    display: block;
    /* filter: brightness(0) invert(0); */
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
  align-items: center;
  flex: 1;
}
.nav-links a {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-600);
  text-decoration: none;
  padding: 7px 14px;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.nav-links a:hover { color: var(--blue); background: var(--blue-light); }
.nav-links a.active { color: var(--blue); background: var(--blue-light); }
.nav-links .nav-cta a {
  background: var(--red);
  color: var(--white);
  padding: 7px 20px;
  border-radius: var(--radius);
  margin-left: 8px;
}
.nav-links .nav-cta a:hover { background: var(--red-dark); color: var(--white); }
.nav-search {
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--gray-600);
  margin-left: auto;
  transition: color 0.2s;
}
.nav-search:hover { color: var(--blue); }

/* ─── BLOG HERO ─── */
.blog-hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 60%, #2a5ab8 100%);
  padding: 56px 24px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.blog-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(232,19,27,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.blog-hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
}
.blog-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 12px;
}
.blog-hero-title span { color: var(--red); }
.blog-hero-subtitle {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  font-weight: 400;
  max-width: 480px;
  margin: 0 auto;
}

/* ─── CATEGORY BAR ─── */
.category-bar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 2px 8px rgba(26,58,143,0.06);
}
.category-bar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  overflow-x: auto;
}
.cat-btn {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 14px 16px;
  border: none;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--gray-600);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
  display: block;
}
.cat-btn:hover { color: var(--blue); border-bottom-color: var(--blue-light); }
.cat-btn.active { color: var(--red); border-bottom-color: var(--red); }

/* ─── POSTS GRID ─── */
.posts-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 80px;
}
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* Featured */
.post-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(26,58,143,0.12);
  margin-bottom: 8px;
  background: var(--white);
}
.post-card.featured .card-image {
  margin-bottom: 0;
  border-radius: 0;
  aspect-ratio: 16/10;
}
.post-card.featured .card-body {
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.post-card.featured .card-title { font-size: 1.7rem; line-height: 1.25; }

/* Regular card */
.post-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(26,58,143,0.07);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, box-shadow 0.25s;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(26,58,143,0.14);
}

.card-image {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-100);
  margin-bottom: 0;
  flex-shrink: 0;
}
.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}
.post-card:hover .card-image img { transform: scale(1.05); }
.card-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }

.card-meta { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.card-date { font-size: 0.72rem; color: var(--gray-400); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; }
.card-category {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
  background: var(--red-light);
  padding: 3px 9px;
  border-radius: 20px;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-800);
  line-height: 1.4;
  margin-bottom: 10px;
  text-decoration: none;
  display: block;
  transition: color 0.2s;
  flex: 1;
}
.post-card:hover .card-title { color: var(--blue); }

.card-excerpt {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.card-readmore {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--red);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
  margin-top: auto;
}
.card-readmore:hover { gap: 10px; }

/* ─── SINGLE POST ─── */
.post-single {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  text-decoration: none;
  margin-bottom: 36px;
  padding: 8px 16px;
  background: var(--blue-light);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.back-link:hover { background: var(--blue); color: var(--white); }

.post-header { margin-bottom: 32px; }
.post-header .card-meta { margin-bottom: 14px; }
.post-headline {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 800;
  color: var(--gray-800);
  line-height: 1.2;
  margin-bottom: 16px;
}
.post-author { font-size: 0.85rem; color: var(--gray-600); }
.post-author strong { color: var(--gray-800); }

.post-hero-image {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  margin-bottom: 40px;
  border-radius: var(--radius);
  background: var(--gray-100);
}
.post-hero-image img { width: 100%; height: 100%; object-fit: cover; }

.post-content { font-size: 1.02rem; line-height: 1.85; color: var(--gray-800); }
.post-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--blue);
  margin: 40px 0 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gray-200);
}
.post-content h3 { font-size: 1.15rem; font-weight: 700; color: var(--gray-800); margin: 28px 0 10px; }
.post-content p { margin-bottom: 18px; }
.post-content ul, .post-content ol { margin: 0 0 18px 24px; }
.post-content li { margin-bottom: 8px; }
.post-content blockquote {
  border-left: 4px solid var(--red);
  margin: 28px 0;
  padding: 16px 24px;
  background: var(--red-light);
  font-style: italic;
  font-size: 1.05rem;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.post-content a { color: var(--blue); font-weight: 600; }

/* ─── AVISO MÉDICO ─── */
.medical-disclaimer {
  background: var(--blue-light);
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-top: 40px;
  font-size: 0.82rem;
  color: var(--gray-600);
  line-height: 1.6;
}
.medical-disclaimer strong { color: var(--blue); }

.post-tags { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--gray-200); display: flex; gap: 8px; flex-wrap: wrap; }
.post-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  color: var(--gray-600);
  text-decoration: none;
  transition: all 0.2s;
}
.post-tag:hover { background: var(--blue); color: var(--white); border-color: var(--blue); }

/* ─── PAGINATION ─── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--gray-200);
}
.pagination a, .pagination span {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  border: 2px solid var(--gray-200);
  text-decoration: none;
  color: var(--gray-600);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.pagination a:hover, .pagination span.active {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

/* ─── FOOTER ─── */
.site-footer { background: var(--blue-dark); }
.footer-top { padding: 56px 24px 48px; }
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 48px;
  flex-wrap: wrap;
}
.footer-brand img { height: 36px; filter: brightness(0) invert(1); margin-bottom: 12px; display: block; }
.footer-tagline { font-size: 0.82rem; color: rgba(255,255,255,0.5); line-height: 1.6; max-width: 240px; }
.footer-cols { display: flex; gap: 48px; flex-wrap: wrap; }
.footer-col h4 { font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; color: var(--white); margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { font-size: 0.85rem; color: rgba(255,255,255,0.55); text-decoration: none; transition: color 0.2s; }
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  background: rgba(0,0,0,0.3);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p { font-size: 0.75rem; color: rgba(255,255,255,0.4); }
.footer-bottom a { font-size: 0.75rem; color: rgba(255,255,255,0.4); text-decoration: none; }
.footer-bottom a:hover { color: rgba(255,255,255,0.8); }

.no-posts { text-align: center; padding: 80px 24px; color: var(--gray-400); }

/* ─── RESPONSIVE ─── */
@media (max-width: 960px) {
  .posts-grid { grid-template-columns: repeat(2, 1fr); }
  .post-card.featured { grid-column: auto; display: flex; flex-direction: column; }
  .post-card.featured .card-body { padding: 20px; }
  .post-card.featured .card-title { font-size: 1.3rem; }
}
@media (max-width: 620px) {
  .posts-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .blog-hero { padding: 36px 20px 32px; }
  .footer-inner { flex-direction: column; }
  .footer-cols { gap: 28px; }
}