@import url('https://fonts.googleapis.com/css2?family=Big+Shoulders:wght@600;800&family=Inter:wght@400;500;600;700;800&family=DM+Mono:wght@500&display=swap');

:root {
  --asfalto: #1C1F24;
  --asfalto-2: #2A2E36;
  --gelo: #F5F6F7;
  --gelo-2: #E8EAED;
  --sinal: #E5264F;
  --sinal-escuro: #B81C3D;
  --ambar: #F5A623;
  --texto-claro: #F5F6F7;
  --texto-escuro: #1C1F24;
  --texto-muted: #65707D;
  --sucesso: #2FB170;
  --branco: #ffffff;
  --raio: 12px;
  --raio-pequeno: 8px;
  --container: 1180px;
  --f-display: 'Big Shoulders', sans-serif;
  --f-corpo: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --f-mono: 'DM Mono', monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--f-corpo);
  background: var(--gelo);
  color: var(--texto-escuro);
  line-height: 1.7;
  font-size: 1.02rem;
}

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

img[loading="lazy"] { opacity: 0.98; }

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

button,
input {
  font: inherit;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

h1, h2, h3, h4 {
  font-family: var(--f-display);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 0.8em;
  color: var(--texto-escuro);
}

p, ul, ol, blockquote {
  margin-top: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(28, 31, 36, 0.94);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(10px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 18px;
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.site-header__logo {
  width: auto;
  height: 46px;
  display: block;
}

.site-header__nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.site-header__nav a {
  color: rgba(255,255,255,0.72);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.site-header__nav a:hover,
.site-header__nav a.is-active {
  color: var(--branco);
}

.site-header__nav .btn {
  padding: 12px 18px;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.site-header__toggle {
  display: none;
  background: transparent;
  border: 0;
  color: var(--branco);
  font-size: 2rem;
  cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 2px solid transparent;
  padding: 15px 26px;
  border-radius: var(--raio-pequeno);
  background: var(--sinal);
  color: var(--branco);
  font-weight: 700;
  box-shadow: 0 4px 0 var(--sinal-escuro);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 var(--sinal-escuro);
}

.btn:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--sinal-escuro);
}

.article-shell {
  padding: 42px 0 80px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  color: var(--texto-muted);
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.breadcrumbs a {
  color: var(--texto-muted);
}

.breadcrumbs .divider {
  color: var(--texto-muted);
}

.article-header {
  margin-bottom: 28px;
}

.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
  margin-bottom: 14px;
  color: var(--texto-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.article-tag {
  display: inline-flex;
  align-items: center;
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(229,38,79,0.08);
  color: var(--sinal);
  font-weight: 700;
  font-family: var(--f-mono);
}

.article-title {
  font-size: clamp(2.5rem, 4vw, 4.4rem);
  margin-bottom: 12px;
}

.article-summary {
  color: var(--texto-muted);
  font-size: clamp(1.05rem, 1.3vw, 1.25rem);
  max-width: 760px;
}

.article-hero {
  border-radius: var(--raio);
  overflow: hidden;
  border: 1px solid var(--gelo-2);
  box-shadow: 0 14px 32px rgba(28,31,36,0.08);
  margin-bottom: 30px;
}

.article-hero img {
  width: 100%;
  height: 100%;
  max-height: 540px;
  object-fit: cover;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 38px;
  align-items: start;
}

.article-content {
  max-width: 760px;
}

.article-content p,
.article-content li {
  color: var(--texto-escuro);
  font-size: 1.08rem;
}

.article-content p {
  margin-bottom: 1.15em;
}

.article-content h2 {
  font-size: clamp(2rem, 2.8vw, 2.8rem);
  margin-top: 2em;
}

.article-content h3 {
  font-size: clamp(1.5rem, 2vw, 2.2rem);
  margin-top: 1.8em;
}

.article-content ul,
.article-content ol {
  padding-left: 1.3em;
  margin-bottom: 1.4em;
}

.article-content blockquote {
  background: rgba(245,166,35,0.08);
  border-left: 4px solid var(--ambar);
  padding: 18px 20px;
  color: var(--texto-escuro);
  border-radius: 0 var(--raio-pequeno) var(--raio-pequeno) 0;
  margin: 1.8em 0;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--gelo-2);
  background: var(--branco);
  border-radius: var(--raio);
  overflow: hidden;
  margin: 1.5em 0;
}

.article-content th,
.article-content td {
  border: 1px solid var(--gelo-2);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.article-content th {
  background: rgba(28,31,36,0.04);
  font-weight: 700;
}

.callout {
  background: #eef4ff;
  border-left: 4px solid var(--sinal);
  border-radius: 0 var(--raio-pequeno) var(--raio-pequeno) 0;
  padding: 18px 20px;
  margin: 1.7em 0;
}

.callout strong {
  color: var(--texto-escuro);
}

.sidebar {
  position: sticky;
  top: 110px;
}

.sidebar-card {
  background: var(--branco);
  border: 1px solid var(--gelo-2);
  border-radius: var(--raio);
  padding: 22px 20px;
  box-shadow: 0 12px 30px rgba(28,31,36,0.08);
}

.sidebar-card + .sidebar-card {
  margin-top: 18px;
}

.sidebar-card__title {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sinal);
  margin-bottom: 12px;
}

.sidebar-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.sidebar-card li a {
  color: var(--texto-escuro);
  font-weight: 600;
  line-height: 1.4;
}

.sidebar-card li a:hover {
  color: var(--sinal);
}

.article-footer {
  border-top: 1px solid var(--gelo-2);
  margin-top: 42px;
  padding-top: 28px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.related-card {
  background: var(--branco);
  border: 1px solid var(--gelo-2);
  border-radius: var(--raio);
  padding: 18px;
  box-shadow: 0 10px 26px rgba(28,31,36,0.04);
}

.related-card h3 {
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.related-card p {
  color: var(--texto-muted);
  margin-bottom: 12px;
}

.cta-box {
  margin-top: 38px;
  background: var(--asfalto);
  color: var(--texto-claro);
  border-radius: var(--raio);
  padding: 28px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
}

.cta-box h3 {
  color: var(--branco);
  margin-bottom: 8px;
}

.cta-box p {
  margin: 0;
  color: rgba(255,255,255,0.72);
}

.site-footer {
  background: #101316;
  color: rgba(255,255,255,0.8);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 52px 0 18px;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
  gap: 26px;
}

.site-footer__logo {
  display: block;
  width: 170px;
  margin-bottom: 14px;
}

.site-footer__title {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ambar);
  margin-bottom: 14px;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.site-footer a {
  color: rgba(255,255,255,0.75);
}

.site-footer a:hover {
  color: var(--branco);
}

.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: 24px;
  padding-top: 18px;
  color: rgba(255,255,255,0.62);
  font-size: 0.86rem;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

@media (max-width: 980px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

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

@media (max-width: 860px) {
  .site-header__toggle {
    display: block;
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--asfalto);
    border-top: 1px solid rgba(255,255,255,0.08);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 18px 20px 22px;
    flex-direction: column;
    align-items: flex-start;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .site-header__nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-header__nav a {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .related-grid,
  .site-footer__grid,
  .cta-box {
    grid-template-columns: 1fr;
  }

  .article-title {
    font-size: 2.5rem;
  }

  .article-content p,
  .article-content li {
    font-size: 1rem;
  }
}