/* Design system Aprender — mobile-first, sem framework. */
  :root {
    --aprender: #055441;
    --aprender-dark: #033a2d;
    --aprender-light: #0a7a5e;
    --aprender-50: #f0f7f0;
    --aprender-100: #dceee5;
    --amber-50: #fffbeb;
    --amber-100: #fef3c7;
    --amber-700: #b45309;
    --red: #dc2626;
    --red-50: #fef2f2;
    --green-100: #dcfce7;
    --green-700: #15803d;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --raio: 0.75rem;
    --raio-sm: 0.5rem;
    --sombra: 0 1px 2px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.08);
    --toque: 48px;
  }

  * { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
  body {
    margin: 0;
    min-height: 100dvh;
    background: var(--gray-50);
    color: var(--gray-900);
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
  }
  h1, h2, h3 { line-height: 1.25; }
  :focus-visible { outline: 3px solid var(--aprender-light); outline-offset: 2px; }
  [hidden] { display: none !important; }

  /* ---------- cabeçalho ---------- */
  .cabecalho {
    background: var(--aprender);
    color: #fff;
    padding: calc(0.75rem + env(safe-area-inset-top)) 1rem 0.75rem;
  }
  .cabecalho-conteudo {
    max-width: 64rem; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
  }
  .marca { font-size: 1.05rem; margin: 0; font-weight: 800; letter-spacing: -0.01em; }
  .marca .ano { color: var(--aprender-100); font-weight: 600; }
  .usuario { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; }
  .usuario span { max-width: 45vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

  main { max-width: 64rem; margin: 0 auto; padding: 1rem; padding-bottom: 3rem; }

  /* ---------- cartões e telas ---------- */
  .cartao {
    background: #fff; border: 1px solid var(--gray-200);
    border-radius: var(--raio); box-shadow: var(--sombra);
    padding: 1.25rem; margin-bottom: 1rem;
  }
  .cartao-login { max-width: 26rem; margin: 2rem auto; }
  .titulo-tela { margin: 0 0 0.25rem; font-size: 1.25rem; color: var(--aprender-dark); }
  .subtitulo { margin: 0 0 1rem; color: var(--gray-600); font-size: 0.9rem; }

  /* ---------- formulário ---------- */
  .campo { display: flex; flex-direction: column; gap: 0.35rem; margin-bottom: 0.9rem; }
  .campo > label { font-weight: 600; font-size: 0.9rem; color: var(--gray-700); }
  .campo .dica { font-weight: 400; color: var(--gray-500); font-size: 0.8rem; }
  input, select {
    font: inherit; width: 100%; min-height: var(--toque);
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--gray-300); border-radius: var(--raio-sm);
    background: #fff; color: var(--gray-900);
  }
  input:focus, select:focus { border-color: var(--aprender-light); }
  .grade-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 0.9rem; }
  @media (max-width: 30rem) { .grade-2 { grid-template-columns: 1fr; } }

  /* ---------- botões ---------- */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
    min-height: var(--toque); padding: 0.6rem 1.1rem;
    border: 1px solid transparent; border-radius: var(--raio-sm);
    font: inherit; font-weight: 700; cursor: pointer; text-decoration: none;
  }
  .btn-primario { background: var(--aprender); color: #fff; }
  .btn-primario:hover { background: var(--aprender-dark); }
  .btn-secundario { background: #fff; color: var(--aprender-dark); border-color: var(--gray-300); }
  .btn-secundario:hover { background: var(--gray-100); }
  .btn-fantasma { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
  .btn-fantasma:hover { background: rgba(255,255,255,.12); }
  .btn:disabled { opacity: 0.55; cursor: not-allowed; }
  .btn-largo { width: 100%; }
  .acoes { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.5rem; }
  .acoes-fim { justify-content: flex-end; }

  /* ---------- mensagens ---------- */
  .erro {
    background: var(--red-50); color: var(--red); border: 1px solid #fecaca;
    border-radius: var(--raio-sm); padding: 0.6rem 0.8rem; font-size: 0.9rem; margin-bottom: 0.8rem;
  }
  .aviso {
    background: var(--amber-50); color: var(--amber-700); border: 1px solid var(--amber-100);
    border-radius: var(--raio-sm); padding: 0.7rem 0.9rem; font-size: 0.9rem;
  }
  .ok-caixa {
    background: var(--aprender-50); color: var(--aprender-dark); border: 1px solid var(--aprender-100);
    border-radius: var(--raio); padding: 1.25rem; text-align: center;
  }

  /* ---------- resumo da identificação ---------- */
  .resumo { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; margin: 0.25rem 0 0; padding: 0; list-style: none; font-size: 0.9rem; }
  .resumo li { color: var(--gray-700); }
  .resumo b { color: var(--aprender-dark); }

  /* ---------- seção do instrumental ---------- */
  .secao { margin-bottom: 1.5rem; }
  .secao > h3 {
    margin: 0 0 0.15rem; font-size: 1rem; color: #fff;
    background: var(--aprender); padding: 0.55rem 0.8rem; border-radius: var(--raio-sm) var(--raio-sm) 0 0;
  }
  .secao .habilidade { margin: 0; padding: 0.5rem 0.8rem; background: var(--aprender-50); font-size: 0.88rem; color: var(--gray-700); }
  .secao .obs { margin: 0.35rem 0 0; font-size: 0.8rem; color: var(--gray-500); font-style: italic; }

  .tabela-rolagem { overflow-x: auto; border: 1px solid var(--gray-200); border-top: none; border-radius: 0 0 var(--raio-sm) var(--raio-sm); }
  table.grade { width: 100%; border-collapse: collapse; }
  table.grade th, table.grade td { border: 1px solid var(--gray-200); padding: 0.5rem; text-align: left; vertical-align: middle; font-size: 0.88rem; }
  table.grade thead th { background: var(--gray-100); color: var(--gray-700); position: sticky; top: 0; }
  table.grade td.rotulo { min-width: 15rem; }
  table.grade td.grupo { background: var(--aprender-50); font-weight: 700; color: var(--aprender-dark); white-space: nowrap; vertical-align: top; }
  table.grade td.num { text-align: center; width: 6.5rem; }
  table.grade input.contagem { text-align: center; min-height: 42px; padding: 0.35rem; }
  table.grade tfoot td { background: var(--gray-50); font-weight: 700; }

  .badge { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.78rem; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: 999px; }
  .badge-ok { background: var(--green-100); color: var(--green-700); }
  .badge-atencao { background: var(--amber-100); color: var(--amber-700); }
  .linha-erro input.contagem { border-color: var(--amber-700); background: var(--amber-50); }

  /* ---------- rodapé fixo de ação ---------- */
  .barra-acao {
    position: sticky; bottom: 0; margin: 0 -1rem -3rem; padding: 0.8rem 1rem calc(0.8rem + env(safe-area-inset-bottom));
    background: rgba(255,255,255,.95); backdrop-filter: blur(4px);
    border-top: 1px solid var(--gray-200); display: flex; gap: 0.6rem; align-items: center; justify-content: space-between;
  }
  .barra-acao .cont { font-size: 0.85rem; color: var(--gray-600); }

  /* ---------- toast ---------- */
  #toast {
    position: fixed; left: 50%; bottom: 1.25rem; transform: translateX(-50%) translateY(1rem);
    background: var(--gray-900); color: #fff; padding: 0.7rem 1rem; border-radius: var(--raio-sm);
    font-size: 0.9rem; box-shadow: var(--sombra); opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; max-width: 90vw;
  }
  #toast.mostra { opacity: 1; transform: translateX(-50%) translateY(0); }

  .carregando { display: inline-block; width: 1.1em; height: 1.1em; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: girar .7s linear infinite; }
  @keyframes girar { to { transform: rotate(360deg); } }

  /* ---------- impressão ---------- */
  @media print {
    .cabecalho, .barra-acao, .no-print { display: none !important; }
    body { background: #fff; }
    .cartao, .tabela-rolagem { box-shadow: none; }
    .secao > h3 { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  }