/* Perito de Trânsito — folha das páginas de conteúdo
   Tokens extraídos do site em produção. Ver docs/DESIGN.md. */

:root{
  --black:#0a0a0a; --dark:#111111; --dark-2:#161616; --dark-3:#1e1e1e;
  --mid:#2a2a2a; --muted:#888888; --white:#ffffff; --light-bg:#f2f2f0;
  --red:#D40000; --red-dark:#AA0000; --red-glow:rgba(212,0,0,.25);
  --font-display:'Barlow Condensed',Impact,sans-serif;
  --font-body:'Lato',-apple-system,Segoe UI,sans-serif;
  --transition:.3s cubic-bezier(.4,0,.2,1);
  --medida:68ch;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--black); color:rgba(255,255,255,.85);
  font-family:var(--font-body); font-size:17px; line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

/* ---------- topo ---------- */
.topo{
  position:sticky; top:0; z-index:10; background:rgba(10,10,10,.92);
  backdrop-filter:blur(8px); border-bottom:1px solid var(--mid);
}
.topo .faixa{
  max-width:1140px; margin:0 auto; padding:14px 24px;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.topo img{height:34px;width:auto;display:block}
.topo nav{display:flex;gap:26px}
.topo nav a{
  font-family:var(--font-display); font-size:15px; letter-spacing:.09em;
  text-transform:uppercase; color:rgba(255,255,255,.7);
  text-decoration:none; transition:color var(--transition);
}
.topo nav a:hover{color:var(--white)}

/* ---------- cabeçalho do artigo ---------- */
.capa{
  max-width:var(--medida); margin:0 auto; padding:72px 24px 0;
}
.trilha{
  font-family:var(--font-display); font-size:14px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--muted); margin-bottom:22px;
}
.trilha a{color:var(--muted);text-decoration:none}
.trilha a:hover{color:var(--white)}
h1{
  font-family:var(--font-display); font-weight:700;
  font-size:clamp(38px,6.4vw,62px); line-height:.98; letter-spacing:-.015em;
  text-transform:uppercase; color:var(--white); margin:0 0 20px;
}
.linha-fina{
  font-size:20px; line-height:1.6; color:rgba(255,255,255,.72);
  margin:0 0 30px; font-weight:300;
}
.assinatura{
  display:flex; align-items:center; gap:13px;
  padding:16px 0; border-top:1px solid var(--mid); border-bottom:1px solid var(--mid);
  font-size:14px; color:var(--muted);
}
.assinatura img{width:44px;height:44px;border-radius:50%;object-fit:cover;flex:none}
.assinatura strong{color:rgba(255,255,255,.88);font-weight:700;display:block}

/* ---------- corpo ---------- */
article{max-width:var(--medida); margin:0 auto; padding:0 24px 40px}
article h2{
  font-family:var(--font-display); font-weight:700;
  font-size:clamp(27px,3.9vw,36px); line-height:1.08; letter-spacing:-.01em;
  text-transform:uppercase; color:var(--white); margin:56px 0 18px;
}
article h3{
  font-family:var(--font-display); font-weight:600; font-size:22px;
  letter-spacing:.02em; color:var(--white); margin:36px 0 12px;
}
article p{margin:0 0 20px}
article a{color:var(--white);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--red)}
article ul,article ol{margin:0 0 22px;padding-left:22px}
article li{margin-bottom:10px}
article li::marker{color:var(--red)}
strong{color:var(--white);font-weight:700}

/* citação de norma — o fio vermelho é 1 dos 2 usos do acento */
.norma{
  margin:30px 0; padding:18px 0 18px 22px; border-left:2px solid var(--red);
  font-size:16px; color:rgba(255,255,255,.75);
}
.norma cite{display:block;margin-top:9px;font-style:normal;font-size:13px;
  letter-spacing:.08em;text-transform:uppercase;color:var(--muted);
  font-family:var(--font-display)}

/* bloco de atenção, sem raio e sem barra colorida */
.atencao{
  margin:32px 0; padding:22px 24px; background:var(--dark-2);
  border-top:1px solid var(--mid); border-bottom:1px solid var(--mid);
}
.atencao p:last-child{margin-bottom:0}
.atencao .rotulo{
  font-family:var(--font-display); font-size:13px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--muted); margin-bottom:9px;
}

/* diagrama técnico */
figure{margin:38px 0}
figure svg{width:100%;height:auto;display:block;background:var(--dark);border:1px solid var(--mid)}
figcaption{margin-top:11px;font-size:14px;color:var(--muted);line-height:1.55}

/* diagrama largo: o esquema tecnico é o argumento da pagina, e na medida do
   texto (68ch) a anotação cai para ~10px. Sai da medida e volta a ser legivel.
   No celular a regra vira largura cheia e nada estoura. */
figure.largo{
  width:min(94vw,920px);
  max-width:none;
  margin-left:50%;
  transform:translateX(-50%);
}
@media(max-width:760px){
  /* no celular o esquema nao cabe legivel em 327px: vira rolagem lateral,
     com largura minima que mantem a anotacao lendo. */
  figure.largo{width:100%;margin-left:0;transform:none;overflow-x:auto}
  figure.largo svg{min-width:680px}
  figure.largo figcaption{position:sticky;left:0}
}

/* tabela: só fio horizontal, sem zebra e sem cabeçalho colorido */
table{width:100%;border-collapse:collapse;margin:30px 0;font-size:16px}
th{
  text-align:left; padding:11px 12px 11px 0; border-bottom:1px solid var(--mid);
  font-family:var(--font-display); font-size:14px; letter-spacing:.1em;
  text-transform:uppercase; color:var(--muted); font-weight:600;
}
td{padding:13px 12px 13px 0;border-bottom:1px solid #1a1a1a;vertical-align:top}

/* fórmula */
.formula{
  margin:26px 0; padding:22px 24px; background:var(--dark);
  border:1px solid var(--mid); text-align:center;
  font-family:var(--font-display); font-size:25px; letter-spacing:.02em;
  color:var(--white);
}
.formula small{
  display:block; margin-top:13px; font-family:var(--font-body);
  font-size:14px; letter-spacing:0; color:var(--muted); line-height:1.7;
}

/* indice de /p/: titulo clicavel e o resumo logo abaixo, sem marcador */
ul.indice{list-style:none;margin:0 0 10px;padding:0}
ul.indice li{margin:0;padding:16px 0;border-bottom:1px solid #1a1a1a}
ul.indice li:first-child{border-top:1px solid #1a1a1a}
ul.indice a{
  display:block; font-family:var(--font-display); font-size:21px;
  line-height:1.15; color:var(--white); text-decoration:none; font-weight:600;
  transition:color var(--transition);
}
ul.indice a:hover{color:var(--red)}
ul.indice span{display:block;margin-top:6px;font-size:15px;color:var(--muted);line-height:1.5}

/* ---------- chamada final ---------- */
.chamada{
  max-width:var(--medida); margin:60px auto 0; padding:44px 24px 54px;
  border-top:1px solid var(--mid); text-align:center;
}
.chamada h2{margin-top:0}
.chamada p{color:rgba(255,255,255,.72);margin-bottom:26px}
.botao{
  display:inline-block; padding:17px 38px; background:var(--red); color:#fff;
  font-family:var(--font-display); font-size:18px; letter-spacing:.08em;
  text-transform:uppercase; text-decoration:none; font-weight:600;
  transition:background var(--transition);
}
.botao:hover{background:var(--red-dark)}

/* ---------- rodapé ---------- */
footer{
  border-top:1px solid var(--mid); margin-top:30px;
  padding:34px 24px; text-align:center; font-size:13px; color:var(--muted);
}
footer a{color:var(--muted)}

@media(max-width:640px){
  body{font-size:16px}
  .capa{padding-top:46px}
  .topo nav{display:none}
}