/* Normas gráficas do Politécnico de Setúbal: Barlow (reserva digital: Roboto), títulos em maiúsculas,
     cores da unidade Tecnologia Setúbal (#00C0F3 e #00A0D3). Tudo em rem: a página escala com a largura do ecrã. */
  html{font-size:clamp(16px,1.75vw,30px);-webkit-text-size-adjust:100%}
  :root{
    --paper:#ffffff; --ink:#0b1a26; --muted:#33444f;
    --accent:#00a0d3;        /* Tecnologia Setúbal, tom escuro  */
    --accent-light:#00c0f3;  /* Tecnologia Setúbal, tom claro   */
    --accent-text:#007a9e;   /* tom mais escuro do mesmo azul, para texto pequeno (contraste ≥ 4,5:1) */
    --line:#8fd6ee;
    --mono:ui-monospace,"Cascadia Code","SFMono-Regular",Consolas,"Liberation Mono",monospace;
    --sans:"Barlow","Roboto","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  }
  *{box-sizing:border-box}
  body{margin:0;overflow-x:hidden;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.3}
  .wrap{max-width:68rem;margin:0 auto;padding:0 1.5rem}

  /* logótipos nos dois cantos */
  .topbar{border-bottom:.15rem solid var(--accent)}
  .topbar .wrap{display:flex;justify-content:space-between;align-items:center;padding-top:.55rem;padding-bottom:.55rem}
  .topbar img{display:block;height:3.1rem;width:auto}

  /* menu: voltar à página inicial e saltar entre labs já abertos */
  .nav{border-bottom:.1rem solid var(--line)}
  .nav .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem .6rem;padding-top:.5rem;padding-bottom:.5rem}
  .nav a{text-decoration:none;color:var(--ink);font-weight:700;font-size:1.1rem;border-radius:999px;padding:.1rem .85rem;border:.15rem solid var(--accent)}
  .nav a.home{font-weight:800;text-transform:uppercase;letter-spacing:.02em;border-color:var(--ink)}
  .nav a[aria-current="page"]{background:var(--accent-light);border-color:var(--accent-light);font-weight:800}
  .nav a:focus-visible{outline:.25rem solid var(--ink);outline-offset:.15rem}
  .nav .sep{width:.15rem;height:1.5rem;background:var(--line);margin:0 .2rem}

  .page{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:2rem;padding-top:1.1rem;padding-bottom:1rem}

  h1{margin:0;font-size:2.5rem;line-height:1.05;letter-spacing:.005em;font-weight:800;color:var(--ink);overflow-wrap:anywhere}
  .page h1,.card h2{text-transform:uppercase}
  .course{margin:.8rem 0 0;font-size:1.3rem;font-weight:600;color:var(--muted)}
  .tech{list-style:none;margin:1rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.6rem .7rem}
  .tech li{border:.15rem solid var(--accent);border-radius:999px;padding:.1rem .9rem;font-size:1.2rem;font-weight:700;color:var(--ink);background:#fff}
  .term{margin-top:1.4rem;font-family:var(--mono);font-size:1.1rem;font-weight:600;color:var(--ink);border-left:.25rem solid var(--accent);padding:.1rem 0 .1rem .8rem}
  .term b{color:var(--accent-text)}
  .term p{margin:0}

  /* grafo de commits */
  .log{position:relative;margin:0;padding:0;list-style:none}
  .log::before{content:"";position:absolute;left:.9rem;top:1rem;bottom:1rem;width:.2rem;background:var(--line);transform-origin:top;animation:draw 1s ease-out both}
  @keyframes draw{from{transform:scaleY(0)}to{transform:scaleY(1)}}
  .lab{position:relative;display:flex;gap:1rem;padding:0 0 .75rem}
  .node{flex:none;width:2rem;height:2rem;display:grid;place-items:center;z-index:1}
  .node::after{content:"";width:1.05rem;height:1.05rem;border-radius:50%;background:var(--paper);border:.2rem solid var(--line)}
  .body{flex:1;min-width:0}
  h3{margin:0;font-weight:800;display:flex;flex-wrap:wrap;align-items:baseline;gap:0 .7rem}
  .n{font-size:1.15rem;font-weight:800;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
  .t{font-size:1.7rem;letter-spacing:0}
  .sub{margin:.1rem 0 0;font-size:1.2rem;font-weight:500;color:var(--muted)}

  /* labs já abertos: ligações */
  .is-done .node::after{background:var(--accent);border-color:var(--accent)}
  .is-done .n{color:var(--accent-text)}
  .is-done .t{font-size:1.5rem} .is-done .sub{display:none}
  .is-done .lablink{align-items:center;padding-top:.3rem;padding-bottom:.3rem}
  .is-done{padding-bottom:.35rem}

  .lablink{display:flex;gap:1rem;flex:1;align-items:flex-start;color:inherit;text-decoration:none;
           border:.2rem solid transparent;border-radius:.9rem;padding:.7rem .9rem .8rem .5rem;margin:-.2rem 0 0 -.5rem}
  .lablink:hover{border-color:var(--line)}
  .lablink:focus-visible{outline:.25rem solid var(--ink);outline-offset:.2rem}
  .go{align-self:center;flex:none;font-weight:800;font-size:1.25rem;color:var(--ink);background:var(--accent-light);border-radius:999px;padding:.25rem 1.1rem}
  .is-done .go{background:#fff;border:.15rem solid var(--accent);padding:.1rem 1rem}

  /* lab da semana (HEAD): em moldura */
  .is-head .lablink{border-color:var(--accent)}
  .is-head{padding-bottom:.9rem}
  .is-head .node::after{width:1.25rem;height:1.25rem;border:.35rem solid var(--accent)}
  .is-head .t{font-size:1.9rem} .is-head .n{color:var(--accent-text)} .is-head .sub{color:var(--ink);font-size:1.25rem;font-weight:600}
  .tag{font-size:1.05rem;font-weight:800;letter-spacing:.04em;color:var(--ink);background:var(--accent-light);padding:0 .55rem;border-radius:.3rem;align-self:center}

  .is-next .t{font-size:1.3rem;font-weight:700;color:var(--muted)}
  .is-next .n{color:var(--muted)}

  .proximo{margin:.4rem 0 0 3rem;font-size:1.2rem;font-weight:500;color:var(--muted)}
  .proximo b{font-weight:800;text-transform:uppercase;letter-spacing:.03em}
  footer{border-top:.15rem solid var(--accent)}
  footer .wrap{padding-top:.5rem;padding-bottom:.6rem;font-size:1.05rem;font-weight:600;color:var(--muted);display:flex;justify-content:space-between;gap:1rem}

  /* ---- Página de cada lab (dsw/labN.html) ---- */
  .labpage{padding-top:1rem;padding-bottom:1.2rem}
  .labtitle{display:flex;flex-wrap:wrap;align-items:baseline;gap:0 .9rem;margin:.2rem 0 0}
  .labtitle .n{font-size:1.5rem;color:var(--accent-text)}
  .labtitle h1{font-size:2.8rem}
  .labsub{margin:.3rem 0 0;font-size:1.4rem;font-weight:600;color:var(--muted)}
  .card{margin-top:1.4rem;max-width:36rem;border:.2rem solid var(--accent);border-radius:.9rem;padding:1rem 1.2rem 1.2rem}
  .card .step{display:grid;place-items:center;width:2rem;height:2rem;border-radius:50%;background:var(--ink);color:#fff;font-weight:800;font-size:1.1rem}
  .card h2{margin:.6rem 0 0;font-size:1.7rem;font-weight:800;letter-spacing:.01em}
  .card p{margin:.3rem 0 0;font-size:1.2rem;font-weight:500;color:var(--muted)}
  .btn{display:block;margin-top:1rem;text-align:center;text-decoration:none;font-weight:800;font-size:1.35rem;text-wrap:balance;color:var(--ink);background:var(--accent-light);border-radius:.6rem;padding:.55rem 1rem}
  .btn:focus-visible{outline:.25rem solid var(--ink);outline-offset:.2rem}
  .btn.is-pending{background:#fff;color:var(--muted);border:.2rem dashed var(--accent);pointer-events:none}
  .note{margin:1.2rem 0 0;font-size:1.1rem;font-weight:600;color:var(--muted)}
  /* painel de dicas ao lado do cartão */
  .labgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:2rem;align-items:start}
  .labgrid .card{max-width:none}
  .tips{border-left:.25rem solid var(--accent);padding:.1rem 0 .1rem 1rem}
  .tips + .tips{margin-top:1.3rem}
  .tips h2{margin:0 0 .5rem;font-size:1.25rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:var(--accent-text)}
  .tips ol,.tips ul{margin:0;padding-left:1.4rem}
  .tips li{margin:0 0 .7rem;font-size:1.2rem;font-weight:500;line-height:1.3}
  .tips li:last-child{margin-bottom:0}
  .tips li>strong{display:block;font-weight:800;font-size:1.25rem}
  .tips li>span{display:block;color:var(--muted)}
  .tips .how b{color:var(--ink)}
  code{font-family:var(--mono);font-size:.95em;font-weight:600;color:var(--ink);background:#e3f6fd;border-radius:.25rem;padding:0 .3rem}
  .soon{margin:1.4rem 0 0;max-width:36rem;font-size:1.3rem;font-weight:600;color:var(--muted)}

  @media (max-width:700px){
    html{font-size:18px}
    .page{grid-template-columns:1fr}
    .topbar img{height:2.6rem}
    .labgrid{grid-template-columns:1fr}
  }
  @media (prefers-reduced-motion:reduce){.log::before{animation:none}}