/* =============================================
   THR TECNOLOGIA — Blog CSS
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Open+Sans:wght@300;400;500;600&display=swap');

:root {
  --blue-tech:    #086F9D;
  --blue-dark:    #054E70;
  --blue-light:   #0A8EC4;
  --gray-graphite:#606062;
  --gray-ice:     #F4F4F5;
  --black:        #0D0D0D;
  --white:        #FFFFFF;
  --font-title:   'Montserrat', sans-serif;
  --font-body:    'Open Sans', sans-serif;
  --nav-h:        90px;
  --transition:   all .25s ease;
  --radius:       12px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); font-size: 16px; }
body { font-family: var(--font-body); color: var(--black); background: var(--white); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.container--narrow { max-width: 820px; margin: 0 auto; padding: 0 28px; }

/* ── NAVBAR ── */
#navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--nav-h); display: flex; align-items: center; background: rgba(255,255,255,.97); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(8,111,157,.08); transition: var(--transition); }
#navbar.scrolled { box-shadow: 0 4px 24px rgba(8,111,157,.1); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.nav-logo img { height: 70px; transition: var(--transition); }
.nav-menu { display: flex; align-items: center; gap: 8px; }
.nav-link { font-family: var(--font-title); font-size: .82rem; font-weight: 600; color: var(--gray-graphite); padding: 8px 16px; border-radius: 8px; transition: var(--transition); text-transform: uppercase; letter-spacing: .04em; }
.nav-link:hover, .nav-link.active { color: var(--blue-tech); background: rgba(8,111,157,.06); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; background: none; border: none; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--blue-dark); border-radius: 2px; transition: var(--transition); }

/* ── BLOG HERO (listing page) ── */
.blog-hero { padding: calc(var(--nav-h) + 60px) 0 60px; background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-tech) 60%, var(--blue-light) 100%); color: var(--white); }
.blog-hero-inner { max-width: 700px; }
.blog-hero .hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 6px 16px; font-family: var(--font-title); font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--white); margin-bottom: 20px; }
.blog-hero h1 { font-family: var(--font-title); font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; line-height: 1.15; margin-bottom: 16px; }
.blog-hero p { font-size: 1.05rem; opacity: .85; line-height: 1.7; }

/* ── ARTICLE CARDS GRID ── */
.blog-listing { padding: 80px 0 100px; background: var(--gray-ice); }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
.article-card { background: var(--white); border-radius: var(--radius); overflow: hidden; border: 1px solid rgba(8,111,157,.08); transition: var(--transition); display: flex; flex-direction: column; }
.article-card:hover { box-shadow: 0 12px 36px rgba(8,111,157,.12); transform: translateY(-4px); }
.article-card--featured { grid-column: span 2; flex-direction: row; }
.card-img { width: 100%; height: 200px; object-fit: cover; background: linear-gradient(135deg, var(--blue-tech), var(--blue-dark)); display: flex; align-items: center; justify-content: center; font-size: 3rem; flex-shrink: 0; }
.article-card--featured .card-img { width: 340px; height: auto; min-height: 240px; }
.card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.card-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.card-tag { font-family: var(--font-title); font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--blue-tech); background: rgba(8,111,157,.08); padding: 4px 10px; border-radius: 999px; }
.card-date { font-size: .75rem; color: var(--gray-graphite); }
.card-read { font-size: .75rem; color: var(--gray-graphite); }
.card-body h2 { font-family: var(--font-title); font-size: 1.1rem; font-weight: 700; color: var(--blue-dark); line-height: 1.4; margin-bottom: 12px; }
.article-card--featured .card-body h2 { font-size: 1.35rem; }
.card-body p { font-size: .88rem; color: var(--gray-graphite); line-height: 1.65; flex: 1; margin-bottom: 20px; }
.card-link { font-family: var(--font-title); font-size: .8rem; font-weight: 700; color: var(--blue-tech); text-transform: uppercase; letter-spacing: .06em; display: inline-flex; align-items: center; gap: 6px; transition: var(--transition); margin-top: auto; }
.card-link:hover { color: var(--blue-dark); gap: 10px; }
.card-coming { opacity: .5; pointer-events: none; }

/* ── ARTICLE PAGE ── */
.article-header { padding: calc(var(--nav-h) + 60px) 0 60px; background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-tech) 70%); color: var(--white); }
.article-breadcrumb { display: flex; align-items: center; gap: 8px; font-size: .78rem; opacity: .75; margin-bottom: 20px; flex-wrap: wrap; }
.article-breadcrumb a { color: var(--white); transition: var(--transition); }
.article-breadcrumb a:hover { opacity: 1; }
.article-breadcrumb span { opacity: .5; }
.article-tag { display: inline-block; font-family: var(--font-title); font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 5px 14px; color: var(--white); margin-bottom: 18px; }
.article-header h1 { font-family: var(--font-title); font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 900; line-height: 1.2; margin-bottom: 20px; max-width: 800px; }
.article-meta-bar { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; font-size: .82rem; opacity: .8; }
.article-meta-bar span { display: flex; align-items: center; gap: 6px; }

/* ── ARTICLE BODY ── */
.article-body-wrap { display: grid; grid-template-columns: 1fr 280px; gap: 56px; align-items: start; padding: 72px 0 100px; }
.article-content { min-width: 0; }
.article-content p { font-size: 1rem; line-height: 1.85; color: #2d2d2d; margin-bottom: 1.4rem; }
.article-content h2 { font-family: var(--font-title); font-size: 1.5rem; font-weight: 800; color: var(--blue-dark); margin: 2.4rem 0 1rem; padding-top: 1rem; border-top: 2px solid var(--gray-ice); }
.article-content h2:first-child { border-top: none; margin-top: 0; }
.article-content h3 { font-family: var(--font-title); font-size: 1.15rem; font-weight: 700; color: var(--blue-tech); margin: 1.8rem 0 .8rem; }
.article-content ul, .article-content ol { padding-left: 1.4rem; margin-bottom: 1.4rem; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { font-size: 1rem; line-height: 1.75; color: #2d2d2d; margin-bottom: .4rem; }
.article-content strong { color: var(--blue-dark); font-weight: 600; }
.article-content blockquote { border-left: 4px solid var(--blue-tech); background: rgba(8,111,157,.05); padding: 20px 24px; border-radius: 0 var(--radius) var(--radius) 0; margin: 1.8rem 0; font-style: italic; color: var(--blue-dark); }
.article-content blockquote p { margin-bottom: 0; color: var(--blue-dark); }

/* Highlight box */
.highlight-box { background: linear-gradient(135deg, rgba(8,111,157,.06), rgba(10,142,196,.08)); border: 1px solid rgba(8,111,157,.2); border-radius: var(--radius); padding: 24px 28px; margin: 2rem 0; }
.highlight-box p { margin-bottom: 0; }

/* Case box inside article */
.article-case { background: var(--gray-ice); border-radius: var(--radius); padding: 28px; margin: 2rem 0; border-left: 4px solid var(--blue-tech); }
.article-case-label { font-family: var(--font-title); font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--blue-tech); margin-bottom: 8px; }
.article-case h3 { font-family: var(--font-title); font-size: 1rem; font-weight: 700; color: var(--blue-dark); margin-bottom: 10px; }
.article-case p { font-size: .9rem; color: var(--gray-graphite); margin-bottom: 0; line-height: 1.65; }
.article-case-metrics { display: flex; gap: 24px; margin-top: 16px; flex-wrap: wrap; }
.acm { text-align: center; }
.acm-num { font-family: var(--font-title); font-size: 1.5rem; font-weight: 900; color: var(--blue-tech); }
.acm-label { font-size: .72rem; color: var(--gray-graphite); }

/* ── SIDEBAR ── */
.article-sidebar { position: sticky; top: calc(var(--nav-h) + 24px); }
.sidebar-toc { background: var(--gray-ice); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.sidebar-toc h4 { font-family: var(--font-title); font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--gray-graphite); margin-bottom: 14px; }
.toc-list { display: flex; flex-direction: column; gap: 2px; }
.toc-list a { font-size: .82rem; color: var(--gray-graphite); padding: 6px 10px; border-radius: 6px; transition: var(--transition); line-height: 1.4; display: block; }
.toc-list a:hover { color: var(--blue-tech); background: rgba(8,111,157,.08); }
.sidebar-cta { background: linear-gradient(135deg, var(--blue-dark), var(--blue-tech)); border-radius: var(--radius); padding: 28px 24px; color: var(--white); text-align: center; }
.sidebar-cta h4 { font-family: var(--font-title); font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.sidebar-cta p { font-size: .82rem; opacity: .85; line-height: 1.55; margin-bottom: 18px; }
.sidebar-cta a { display: block; background: var(--white); color: var(--blue-dark); font-family: var(--font-title); font-size: .82rem; font-weight: 700; padding: 12px 16px; border-radius: 8px; transition: var(--transition); }
.sidebar-cta a:hover { background: var(--gray-ice); }

/* ── ARTICLE BOTTOM CTA ── */
.article-bottom-cta { background: linear-gradient(135deg, var(--blue-dark), var(--blue-tech)); padding: 80px 0; color: var(--white); text-align: center; }
.article-bottom-cta h2 { font-family: var(--font-title); font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; margin-bottom: 12px; }
.article-bottom-cta p { font-size: 1rem; opacity: .85; max-width: 540px; margin: 0 auto 28px; }
.btn-cta-white { display: inline-flex; align-items: center; gap: 8px; background: var(--white); color: var(--blue-dark); font-family: var(--font-title); font-size: .9rem; font-weight: 700; padding: 14px 28px; border-radius: 999px; transition: var(--transition); }
.btn-cta-white:hover { background: var(--gray-ice); transform: translateY(-2px); }

/* ── RELATED ARTICLES ── */
.related-articles { padding: 80px 0; background: var(--gray-ice); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }

/* ── FOOTER ── */
footer { background: var(--black); padding: 40px 0; }
.footer-bottom-blog { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-bottom-blog p { font-size: .8rem; color: rgba(255,255,255,.35); }
.footer-bottom-blog a { color: rgba(255,255,255,.35); transition: var(--transition); font-size: .8rem; }
.footer-bottom-blog a:hover { color: var(--blue-light); }
.footer-logo img { height: 70px; filter: brightness(1.1); }

/* ── WHATSAPP FLOAT ── */
.whatsapp-float { position: fixed; bottom: 32px; right: 32px; z-index: 999; width: 58px; height: 58px; background: #25D366; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 20px rgba(37,211,102,.4); transition: var(--transition); }
.whatsapp-float svg { width: 28px; height: 28px; }
.whatsapp-float:hover { transform: scale(1.1) translateY(-3px); }

/* ── ANIMATIONS ── */
.fade-up { opacity: 0; transform: translateY(30px); transition: opacity .65s ease, transform .65s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── SECTION COMMON ── */
.section-label { font-family: var(--font-title); font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: var(--blue-tech); display: block; margin-bottom: 12px; }
.section-title { font-family: var(--font-title); font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 900; color: var(--blue-dark); line-height: 1.2; margin-bottom: 12px; }
.section-title span { color: var(--blue-tech); }
.section-subtitle { font-size: 1rem; color: var(--gray-graphite); line-height: 1.65; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .article-body-wrap { grid-template-columns: 1fr; }
  .article-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
  .blog-grid { grid-template-columns: 1fr 1fr; }
  .article-card--featured { grid-column: span 2; }
}
@media (max-width: 768px) {
  :root { --nav-h: 80px; }
  .nav-menu { position: fixed; top: var(--nav-h); left: 0; right: 0; background: var(--white); flex-direction: column; align-items: flex-start; gap: 0; padding: 12px 0 24px; transform: translateY(-120%); opacity: 0; transition: transform .35s ease, opacity .35s ease; box-shadow: 0 20px 40px rgba(0,0,0,.12); border-top: 1px solid rgba(8,111,157,.1); }
  .nav-menu.open { transform: translateY(0); opacity: 1; }
  .nav-link { padding: 14px 28px; width: 100%; border-bottom: 1px solid rgba(8,111,157,.06); }
  .hamburger { display: flex; }
  .blog-grid { grid-template-columns: 1fr; }
  .article-card--featured { grid-column: span 1; flex-direction: column; }
  .article-card--featured .card-img { width: 100%; height: 180px; }
  .article-sidebar { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .container, .container--narrow { padding: 0 18px; }
  .article-case-metrics { gap: 16px; }
}