/* Torque · miniblog. Cores e fontes do kit do canal (canais/torque/youtube.md). */
@font-face { font-family: "Inter"; src: url("fontes/inter-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fontes/inter-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fontes/inter-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Space Grotesk"; src: url("fontes/space-grotesk-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }

:root {
  --planta: #0b1220;
  --linha: #16233d;
  --linha-forte: #1f3152;
  --peca: #f2f4f8;
  --laranja: #ff8a3d;
  --suave: #8a97b1;
  --succao: #3d7bff;
  --painel: #0f182b;
  --coluna: 68ch;
}

* { box-sizing: border-box; }

html {
  background-color: var(--planta);
  /* Papel de planta técnica: grade fina a cada 24 px e forte a cada 120 px. */
  background-image:
    linear-gradient(var(--linha-forte) 1px, transparent 1px),
    linear-gradient(90deg, var(--linha-forte) 1px, transparent 1px),
    linear-gradient(var(--linha) 1px, transparent 1px),
    linear-gradient(90deg, var(--linha) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-attachment: fixed;
}

body {
  margin: 0;
  color: var(--peca);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 1.1875rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--laranja); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--laranja); outline-offset: 3px; border-radius: 2px; }

.topo {
  max-width: calc(var(--coluna) + 4rem);
  margin: 0 auto;
  padding: 1.5rem 1rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.marca {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.12em;
  color: var(--peca);
  text-decoration: none;
}
.marca img { width: 2rem; height: 2rem; }
.topo nav a { color: var(--suave); font-size: 1rem; }

main {
  max-width: calc(var(--coluna) + 4rem);
  margin: 0 auto;
  padding: 2.5rem 1rem 4rem;
  background: linear-gradient(90deg, transparent, rgba(11, 18, 32, 0.92) 1rem, rgba(11, 18, 32, 0.92) calc(100% - 1rem), transparent);
}
main > * { max-width: var(--coluna); margin-left: auto; margin-right: auto; }

h1, h2, h3 { font-family: "Space Grotesk", sans-serif; font-weight: 700; line-height: 1.1; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.3rem, 6vw, 3.9rem); margin: 0 auto 1rem; }
h2 { font-size: clamp(1.55rem, 3.4vw, 2.05rem); margin: 3.2rem auto 0.9rem; }
h3 { font-size: 1.3rem; margin: 2rem auto 0.6rem; }
p { margin: 0 auto 1.15rem; }

.linha-fina { color: var(--suave); font-size: 1.05rem; margin-bottom: 2rem; }
.abre { font-size: 1.32rem; line-height: 1.55; }

/* Vídeo: só carrega o YouTube depois do clique. */
.video {
  position: relative;
  max-width: 100%;
  margin: 2rem auto 2.6rem;
  aspect-ratio: 16 / 9;
  border: 2px solid var(--linha-forte);
  background: var(--painel);
}
.video img, .video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; object-fit: cover; }
.video button {
  position: absolute;
  inset: 0;
  width: 100%;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
}
.video .tocar {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 5.5rem;
  height: 5.5rem;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--laranja);
  box-shadow: 0 0 0 10px rgba(255, 138, 61, 0.22);
  transition: transform 0.15s ease;
}
.video .tocar::after {
  content: "";
  position: absolute;
  left: 38%;
  top: 28%;
  border-style: solid;
  border-width: 1.35rem 0 1.35rem 2.1rem;
  border-color: transparent transparent transparent var(--planta);
}
.video button:hover .tocar, .video button:focus-visible .tocar { transform: translate(-50%, -50%) scale(1.07); }
.video + .aviso { margin-top: -2rem; margin-bottom: 2.6rem; font-size: 0.9rem; color: var(--suave); }

/* Figuras como prancha de desenho técnico: cota no alto e legenda numerada. */
figure { margin: 2.2rem auto 2.4rem; }
figure.larga { max-width: calc(var(--coluna) + 4rem); }
figure img { display: block; width: 100%; height: auto; border: 2px solid var(--linha-forte); }
.cota {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.45rem;
  color: var(--suave);
  font-size: 0.82rem;
}
.cota::before, .cota::after { content: ""; flex: 1; height: 1px; background: var(--suave); opacity: 0.6; }
.cota span { white-space: nowrap; }
figcaption { margin-top: 0.6rem; font-size: 0.98rem; line-height: 1.5; color: var(--suave); }
figcaption b { color: var(--peca); font-family: "Space Grotesk", sans-serif; margin-right: 0.35rem; }

/* Resposta curta no topo: o que a busca e quem tem pressa leem primeiro. */
.resposta { border-left: 4px solid var(--laranja); padding: 0.2rem 0 0.2rem 1.1rem; margin-bottom: 1.6rem; }
.mito { border-left: 4px solid var(--laranja); padding: 0.2rem 0 0.2rem 1.1rem; }

/* Memória de cálculo do número. */
.calculo {
  margin: 2rem auto;
  padding: 1.3rem 1.4rem 1.1rem;
  border: 2px dashed var(--linha-forte);
  background: var(--painel);
}
.calculo h3 { margin-top: 0; }
.calculo dl { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1.2rem; margin: 0 0 0.8rem; }
.calculo dt { color: var(--suave); }
.calculo dd { margin: 0; font-variant-numeric: tabular-nums; }
.calculo .resultado { font-family: "Space Grotesk", sans-serif; font-size: 1.6rem; color: var(--laranja); }

.bonus {
  margin: 3.5rem auto 2rem;
  padding: 1.6rem 1.4rem 1.4rem;
  border: 2px solid var(--laranja);
  background: var(--painel);
}
.bonus h2 { margin-top: 0; }
.bonus figure { margin: 1.2rem 0; }
.baixar {
  display: inline-block;
  padding: 0.7rem 1.2rem;
  background: var(--laranja);
  color: var(--planta);
  font-weight: 700;
  text-decoration: none;
  border-radius: 6px;
}
.baixar:hover { background: #ffa265; }

.fontes { font-size: 1rem; color: var(--suave); }
.fontes li { margin-bottom: 0.45rem; }

.lista-posts { list-style: none; padding: 0; }
.lista-posts li { border-top: 1px solid var(--linha-forte); padding: 1.4rem 0; }
.lista-posts a.titulo { font-family: "Space Grotesk", sans-serif; font-size: 1.6rem; color: var(--peca); text-decoration: none; }
.lista-posts a.titulo:hover { color: var(--laranja); }
.lista-posts p { color: var(--suave); margin: 0.4rem 0 0; }

footer {
  max-width: calc(var(--coluna) + 4rem);
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
  color: var(--suave);
  font-size: 0.95rem;
}
footer p { max-width: var(--coluna); margin: 0 auto 0.5rem; }

@media (max-width: 600px) {
  body { font-size: 1.0625rem; }
  .abre { font-size: 1.18rem; }
  .calculo dl { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}