:root {
  --fg: #d4d7dd;
  --fg-strong: #f5f7fa;
  --muted: #8b94a3;
  --bg: #0d1017;
  --bg-soft: #141925;
  --accent: #4ade80;        /* verde-terminal */
  --accent-2: #38bdf8;      /* azul */
  --accent-soft: #10241a;
  --rule: #232a38;
  --code-bg: #090c12;
  --code-fg: #cbd5e1;
  --inline-bg: #1a2030;
  --inline-fg: #5eead4;
}

* { box-sizing: border-box; }
/* scroll-behavior: smooth foi REMOVIDO de propósito. Nestes artigos os saltos
   de âncora chegam a ~16.000px, e nessa distância o Chrome aborta a animação
   quando o layout muda embaixo dela (as figuras usam loading="lazy"). Resultado
   medido: a URL ganhava o #hash e a página NÃO saía do lugar. Salto instantâneo
   é feio por meio segundo e funciona sempre. */
html { -webkit-text-size-adjust: 100%; }

/* o header do site é sticky (~90px); sem isso a âncora para com o título
   escondido atrás dele. */
h2[id], h3[id] { scroll-margin-top: 104px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.72;
  font-size: 17.5px;
  margin: 0;
  padding: 0;
}

/* fundo com leve grade técnica */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--rule) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .12;
  z-index: -1;
  pointer-events: none;
}

.wrap {
  max-width: none;
  margin: 0 auto;
  padding: 3rem clamp(1.5rem, 5vw, 5.5rem) 5rem;
}

/* Cabeçalho */
header.article-head {
  margin-bottom: 3rem;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid var(--rule);
}
header.article-head .kicker {
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
  font-size: .76rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1.1rem;
}
h1 {
  font-size: 2.5rem;
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--fg-strong);
  margin: 0 0 1rem;
}
.subtitle {
  font-size: 1.12rem;
  color: var(--muted);
  font-weight: 400;
  line-height: 1.55;
  margin: 0 0 1.4rem;
}
.meta { font-size: .85rem; color: var(--muted); font-family: "JetBrains Mono", monospace; }
.meta .tag {
  display: inline-block;
  border: 1px solid var(--rule);
  color: var(--accent-2);
  padding: .12rem .55rem;
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 500;
  margin: .25rem .25rem 0 0;
}

/* h3 do markdown vira subtítulo do header (primeiro h3) — tratado no render */

h2 {
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--fg-strong);
  margin: 3.2rem 0 1rem;
  padding-top: .8rem;
  line-height: 1.25;
  border-top: 1px solid var(--rule);
}
h2::before {
  content: "§ ";
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
}
h3 {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--fg-strong);
  margin: 2.2rem 0 .7rem;
}

p { margin: 0 0 1.25rem; }

a { color: var(--accent-2); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: var(--accent-2); }

strong { font-weight: 700; color: var(--fg-strong); }
em { font-style: italic; }

hr { border: none; border-top: 1px dashed var(--rule); margin: 2.8rem 0; }

/* blockquote = "lição transferível" */
blockquote {
  margin: 1.7rem 0;
  padding: 1rem 1.3rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 6px 6px 0;
  color: var(--fg);
  font-size: 1rem;
}
blockquote p:last-child { margin-bottom: 0; }
blockquote code { background: #06120c; }

/* código inline */
code {
  font-family: "JetBrains Mono", "SF Mono", Menlo, Monaco, Consolas, monospace;
  font-size: .84em;
  background: var(--inline-bg);
  color: var(--inline-fg);
  padding: .12em .4em;
  border-radius: 4px;
  border: 1px solid var(--rule);
}

/* blocos */
pre {
  background: var(--code-bg);
  color: var(--code-fg);
  padding: 1.1rem 1.3rem;
  border-radius: 10px;
  border: 1px solid var(--rule);
  overflow-x: auto;
  font-size: .8rem;
  line-height: 1.6;
  margin: 1.6rem 0;
}
pre code { background: none; border: none; color: inherit; padding: 0; font-size: 1em; }

/* skylighting */
pre .kw, pre .cf { color: #f472b6; }
pre .dt { color: #38bdf8; }
pre .co { color: #64748b; font-style: italic; }
pre .st { color: #86efac; }
pre .dv, pre .fl, pre .bn { color: #fdba74; }
pre .fu { color: #c4b5fd; }
pre .op, pre .va { color: #cbd5e1; }

/* tabelas */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.6rem 0;
  font-size: .88rem;
}
th, td {
  text-align: left;
  padding: .55rem .75rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
th {
  font-weight: 700;
  color: var(--fg-strong);
  border-bottom: 2px solid var(--accent);
  background: var(--bg-soft);
}
tbody tr:hover { background: var(--bg-soft); }
td code { font-size: .82em; }

.wrap > p:last-child em { color: var(--muted); font-size: .85rem; font-style: normal; font-family: "JetBrains Mono", monospace; line-height: 1.8; }

/* diagramas */
figure { margin: 2rem 0; text-align: center; }
figure img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: #0a0d14;
  padding: 1rem;
}
figcaption {
  margin-top: .7rem;
  font-size: .82rem;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
}
/* ===== fotos do robô — diagramação estilo jornal (flutuam ao lado do texto) = */
h2, pre, table, figure:not(.photo) { clear: both; }
figure.photo { margin: 1.6rem 0; }
figure.photo img { width: 100%; height: auto; display: block; border: 1px solid var(--rule); border-radius: 10px; background: #0a0d14; }
figure.photo figcaption { margin-top: .55rem; font-size: .8rem; color: var(--muted); font-family: "JetBrains Mono", monospace; line-height: 1.45; }
@media (min-width: 920px) {
  figure.photo.right { float: right; width: 40%; max-width: 440px; margin: .3rem 0 1.1rem 2rem; }
  figure.photo.left  { float: left;  width: 40%; max-width: 440px; margin: .3rem 2rem 1.1rem 0; }
}

/* ===== TL;DR — resumo no topo pra quem não vai ler tudo ==================== */
.tldr {
  margin: 0 0 2.6rem;
  padding: 1.25rem 1.5rem 1.35rem;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent-2);
  border-radius: 0 8px 8px 0;
  background: linear-gradient(180deg, rgba(56, 189, 248, .055), rgba(56, 189, 248, .012));
}
.tldr-h {
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 700;
  margin: 0 0 .9rem;
}
.tldr ul { margin: 0; padding: 0; list-style: none; }
.tldr li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: .55rem;
  font-size: .97rem;
  line-height: 1.6;
}
.tldr li::before {
  content: "▸";
  position: absolute; left: 0;
  color: var(--accent);
  font-size: .85em;
}
.tldr li:last-child { margin-bottom: 0; }
/* linha de atalhos: vai direto ao ponto ou ao produto */
.tldr-go {
  display: flex; flex-wrap: wrap; gap: .5rem;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--rule);
}
.tldr-go a {
  display: inline-block;
  padding: .34rem .8rem;
  border: 1px solid var(--rule);
  border-radius: 5px;
  background: var(--bg-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--fg);
  transition: border-color .15s, color .15s, background .15s;
}
.tldr-go a:hover {
  border-color: var(--accent-2);
  color: var(--fg-strong);
  background: #16202f;
}
.tldr-go a.is-primary {
  border-color: rgba(74, 222, 128, .45);
  color: var(--accent);
}
.tldr-go a.is-primary:hover { background: var(--accent-soft); color: #86efac; }
@media (max-width: 620px) { .tldr { padding: 1.05rem 1.15rem; } .tldr li { font-size: .93rem; } }