/* ============================================================
 * sobre.css
 * ------------------------------------------------------------
 * Estilos exclusivos da página "Sobre" (sobre.html): reset,
 * corpo da página, link de voltar, cabeçalho, cartões de
 * texto, caixa de destaque (callout) e rodapé.
 *
 * Os tokens de cor/tipografia (--bg-grad, --panel, --ink...)
 * vêm de css/variables.css, compartilhado com a página
 * principal (index.html), garantindo consistência visual entre
 * as duas páginas do site.
 * ============================================================ */

  *{ box-sizing:border-box; }
  html{ -webkit-font-smoothing: antialiased; }
  body{
    margin:0;
    background: var(--bg-grad);
    color: var(--ink);
    font-family: var(--sans);
    padding: 40px 20px 72px;
  }
  .wrap{ max-width: 720px; margin: 0 auto; }

  .back-link{
    display:inline-flex; align-items:center; gap:6px;
    font-size:12.5px; font-weight:700; color: var(--ink-dim);
    text-decoration:none; margin-bottom:22px;
  }
  .back-link:hover{ color: var(--blue); }

  header{ margin-bottom: 26px; }
  header .tag{
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .05em;
    text-transform: uppercase;
    color: var(--blue);
    display:flex; align-items:center; gap:7px;
  }
  header .tag::before{
    content:"";
    width:7px; height:7px; border-radius:50%;
    background: var(--blue);
    box-shadow: 0 0 0 4px var(--blue-dim);
  }
  header h1{
    font-size: 26px;
    margin: 10px 0 6px;
    font-weight: 800;
    letter-spacing: -0.02em;
  }
  header p{ margin:0; color: var(--ink-dim); font-size: 13.5px; line-height:1.6; }

  .card{
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 22px 24px;
    margin-bottom: 18px;
  }
  .card h2{
    font-size: 15px;
    margin: 0 0 10px;
    font-weight: 800;
    letter-spacing:-0.01em;
    color: var(--ink);
  }
  .card p{
    font-size: 13.5px;
    line-height: 1.7;
    color: var(--ink-dim);
    margin: 0 0 12px;
  }
  .card p:last-child{ margin-bottom:0; }
  .card p strong{ color: var(--ink); }

  .callout{
    background: var(--blue-dim);
    border: 1px solid #c9d3f7;
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-size: 12.5px;
    line-height: 1.6;
    color: #223078;
  }

  footer.site-footer{
    max-width: 720px;
    margin: 30px auto 0;
    padding: 20px 4px 4px;
    border-top: 1px solid var(--line);
    text-align:center;
  }
  .footer-title{ font-size:13px; font-weight:800; color:var(--ink); }
  .footer-line{ font-size:11.5px; color:var(--ink-dim); margin-top:4px; line-height:1.5; }
  .footer-meta{ font-size:11px; color:var(--ink-faint); margin-top:4px; }