/* Otávio Sales — articles.
   Paleta e clima na linha editorial da Anthropic: marfim quente, tinta quase preta,
   acento terracota, serifada para leitura, sans discreta para navegação/meta. */

:root {
  --fundo: #faf9f5;
  --tinta: #141413;
  --secundario: #63615a;
  --acento: #c15f3c;
  --linha: #e8e5dc;
  --cartao-hover: #f3f1e9;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, "Segoe UI", sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --miolo: 44rem;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--fundo);
  color: var(--tinta);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.miolo {
  max-width: var(--miolo);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

a { color: inherit; }

/* ---------- topo ---------- */

.topo {
  border-bottom: 1px solid var(--linha);
  padding-block: 1.1rem;
}

.topo nav {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.marca {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.nav-link {
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--secundario);
  text-decoration: none;
  transition: color 150ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .nav-link:hover { color: var(--acento); }
  .marca:hover { color: var(--acento); }
}

/* ---------- abertura ---------- */

.abertura { padding-block: 4rem 2.5rem; }

.abertura h1 {
  font-size: clamp(2.2rem, 6vw, 3.1rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.abertura-sub {
  margin-top: 0.9rem;
  font-size: 1.1rem;
  color: var(--secundario);
  max-width: 34rem;
}

/* ---------- lista de artigos ---------- */

.lista-posts {
  display: flex;
  flex-direction: column;
  padding-bottom: 4rem;
}

.cartao-post {
  display: block;
  text-decoration: none;
  padding: 1.6rem 1.1rem;
  margin-inline: -1.1rem;
  border-radius: 12px;
  border-top: 1px solid var(--linha);
  transition: transform 180ms var(--ease-out), background-color 180ms var(--ease-out);
}

.cartao-post:first-child { border-top: none; }

@media (hover: hover) and (pointer: fine) {
  .cartao-post:hover { background: var(--cartao-hover); }
  .cartao-post:hover .cartao-titulo { color: var(--acento); }
}

.cartao-post:active { transform: scale(0.985); }

.cartao-data {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--secundario);
}

.cartao-titulo {
  margin-top: 0.45rem;
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
  transition: color 150ms var(--ease-out);
}

.cartao-descricao {
  margin-top: 0.45rem;
  color: var(--secundario);
  font-size: 1rem;
  max-width: 38rem;
}

.vazio { color: var(--secundario); padding-block: 2rem; }

/* ---------- artigo ---------- */

.artigo { padding-block: 4rem 5rem; }

.artigo-data {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--secundario);
}

.artigo-titulo {
  margin-top: 0.8rem;
  font-size: clamp(2rem, 5.5vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.artigo-descricao {
  margin-top: 1rem;
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--secundario);
}

.artigo-divisor {
  border: none;
  border-top: 1px solid var(--linha);
  margin-block: 2.2rem;
}

/* ---------- prosa ---------- */

.prosa > * + * { margin-top: 1.15rem; }

.prosa h2, .prosa h3, .prosa h4 {
  margin-top: 2.4rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.prosa h2 { font-size: 1.55rem; }
.prosa h3 { font-size: 1.25rem; }
.prosa h4 { font-size: 1.05rem; }

.prosa a {
  color: var(--acento);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.prosa ul, .prosa ol { padding-left: 1.4rem; }
.prosa li + li { margin-top: 0.35rem; }

.prosa blockquote {
  border-left: 3px solid var(--acento);
  padding-left: 1.1rem;
  color: var(--secundario);
  font-style: italic;
}

.prosa img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--linha);
}

.prosa code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  background: #efede4;
  border-radius: 5px;
  padding: 0.12em 0.35em;
}

.prosa pre {
  background: #201f1d;
  color: #f2f0e9;
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.55;
}

.prosa pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
  color: inherit;
}

.prosa hr {
  border: none;
  border-top: 1px solid var(--linha);
  margin-block: 2.2rem;
}

.artigo-voltar { margin-top: 3rem; }

.artigo-voltar a {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--secundario);
  text-decoration: none;
  transition: color 150ms var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .artigo-voltar a:hover { color: var(--acento); }
}

/* ---------- rodapé ---------- */

.rodape {
  border-top: 1px solid var(--linha);
  padding-block: 1.6rem 2.4rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--secundario);
}