/* =========================================================
   BLOG-SPOT.CSS
   Página: Artículo de blog - Petrus Perú
   ========================================================= */

/* RESET BÁSICO */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f8fafc;
  color: #1e293b;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  padding-left: 1.2rem;
}

img {
  max-width: 100%;
  display: block;
}

/* VARIABLES */
:root {
  --navy-900: #0f172a;
  --navy-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-100: #f1f5f9;
  --white: #ffffff;
  --brick: #a63220;
  --brick-dark: #842818;
  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
}

/* CONTENEDOR */
.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

/* BOTONES */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 22px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  transition: 0.25s ease;
}

.btn-primary {
  background: var(--brick);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--brick-dark);
  transform: translateY(-2px);
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  color: var(--white);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.nav-logo-text {
  font-size: 1.35rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
  padding: 0;
}

.nav-menu a {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.95rem;
  font-weight: 600;
  transition: 0.25s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--white);
}

/* HERO BLOG */
.blog-hero {
  padding: 95px 0 72px;
  background:
    radial-gradient(circle at top right, rgba(166, 50, 32, 0.38), transparent 34%),
    linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: var(--white);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a:hover {
  color: var(--white);
}

.blog-category {
  display: inline-block;
  margin-bottom: 20px;
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.blog-hero h1 {
  max-width: 950px;
  margin-bottom: 24px;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.blog-excerpt {
  max-width: 850px;
  margin-bottom: 28px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.15rem;
  line-height: 1.75;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.95rem;
}

.article-meta span:not(:last-child)::after {
  content: "•";
  margin-left: 14px;
  color: rgba(255, 255, 255, 0.35);
}

/* LAYOUT ARTÍCULO */
.article-section {
  padding: 72px 0;
}

.article-layout {
  display: grid;
  grid-template-columns: 285px minmax(0, 820px);
  gap: 48px;
  align-items: start;
}

/* SIDEBAR / ÍNDICE */
.article-sidebar {
  position: sticky;
  top: 105px;
}

.toc-box {
  padding: 25px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.06);
}

.toc-box h2 {
  margin-bottom: 16px;
  color: var(--navy-900);
  font-size: 1rem;
}

.toc-box ol {
  display: grid;
  gap: 12px;
  padding-left: 18px;
}

.toc-box li {
  color: var(--slate-500);
  font-size: 0.92rem;
  line-height: 1.45;
}

.toc-box a {
  color: var(--slate-700);
  transition: 0.25s ease;
}

.toc-box a:hover {
  color: var(--brick);
}

/* CONTENIDO */
.article-content {
  padding: 50px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.article-content p {
  margin-bottom: 22px;
  color: var(--slate-700);
  font-size: 1.04rem;
  line-height: 1.85;
}

.article-content h2 {
  margin: 52px 0 18px;
  color: var(--navy-900);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.article-content h3 {
  margin: 34px 0 12px;
  color: var(--navy-800);
  font-size: 1.22rem;
  line-height: 1.35;
}

.article-content ul {
  margin-bottom: 28px;
  padding-left: 24px;
}

.article-content li {
  margin-bottom: 10px;
  color: var(--slate-700);
  font-size: 1.02rem;
  line-height: 1.65;
}

.article-content blockquote {
  margin: 36px 0;
  padding: 28px 32px;
  background: #fff7ed;
  border-left: 5px solid var(--brick);
  border-radius: 0 20px 20px 0;
  color: var(--navy-800);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.65;
}

/* CTA */
.article-cta,
.article-final-cta {
  margin: 48px 0;
  padding: 36px;
  border-radius: 26px;
  background:
    radial-gradient(circle at top right, rgba(166, 50, 32, 0.38), transparent 36%),
    linear-gradient(135deg, #0f172a, #1e293b);
  color: var(--white);
}

.article-cta h2,
.article-final-cta h2 {
  margin: 0 0 14px;
  color: var(--white);
  font-size: 1.65rem;
}

.article-cta p,
.article-final-cta p {
  margin-bottom: 24px;
  color: rgba(255, 255, 255, 0.82);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.faq-item {
  padding: 24px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 20px;
}

.faq-item h3 {
  margin: 0 0 10px;
  color: var(--navy-900);
  font-size: 1.1rem;
}

.faq-item p {
  margin: 0;
}

/* ARTÍCULOS RELACIONADOS */
.related-posts {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.related-posts h2 {
  margin-top: 0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.related-card {
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: 0.25s ease;
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.related-card h3 {
  margin: 0 0 16px;
  color: var(--navy-900);
  font-size: 1rem;
  line-height: 1.45;
}

.related-card a {
  color: var(--brick);
  font-weight: 800;
}

.related-card a:hover {
  text-decoration: underline;
}

/* FOOTER */
.site-footer {
  background: #0f172a;
  color: var(--white);
  padding-top: 64px;
}

.footer-layout {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 46px;
}

.footer-brand h2 {
  margin-bottom: 14px;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
}

.footer-brand p,
.footer-contact p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.footer-links h3,
.footer-contact h3 {
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-links ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: 0.25s ease;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  padding: 22px 20px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.9rem;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

  .toc-box {
    max-width: 100%;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .footer-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 850px) {
  .navbar {
    flex-wrap: wrap;
    padding: 16px 0;
  }

  .nav-menu {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
  }

  .navbar .btn {
    display: none;
  }

  .blog-hero {
    padding: 72px 0 56px;
  }

  .article-section {
    padding: 44px 0;
  }

  .article-content {
    padding: 32px 24px;
    border-radius: 22px;
  }

  .article-cta,
  .article-final-cta {
    padding: 28px 24px;
  }

  .article-meta {
    gap: 8px;
  }

  .article-meta span:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .blog-hero h1 {
    font-size: 2rem;
  }

  .blog-excerpt {
    font-size: 1rem;
  }

  .nav-logo-text {
    font-size: 1.15rem;
  }

  .nav-menu a {
    font-size: 0.88rem;
  }

  .toc-box {
    padding: 20px;
  }

  .article-content p,
  .article-content li {
    font-size: 0.98rem;
  }
}