/* Conteudix Ferramentas — folha única para as dez páginas.
   Sem framework, sem fonte externa, sem CDN: a página tem que abrir rápido no
   3G de celular, que é de onde vem a maior parte do tráfego de busca no Brasil. */

:root {
  --bg:        #ffffff;
  --bg-alt:    #f4f6fa;
  --bg-card:   #ffffff;
  --ink:       #14181f;
  --ink-soft:  #4a5262;
  --ink-faint: #7b8494;
  --line:      #e2e6ee;
  --brand:     #1f5fd8;
  --brand-ink: #ffffff;
  --ok:        #128a4c;
  --warn:      #b06a00;
  --bad:       #c0362c;
  --radius:    12px;
  --wrap:      760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #11141a;
    --bg-alt:    #171b23;
    --bg-card:   #1b1f28;
    --ink:       #eef1f6;
    --ink-soft:  #b3bccb;
    --ink-faint: #7e879a;
    --line:      #2a3038;
    --brand:     #6c9bff;
    --brand-ink: #0d1017;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.1rem; }

/* -- Cabeçalho e rodapé ---------------------------------------------------- */

.top {
  border-bottom: 1px solid var(--line);
  background: var(--bg-alt);
  padding: .7rem 0;
}
.top__in { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.top a { color: var(--ink); text-decoration: none; font-weight: 700; }
.top nav { display: flex; gap: 1rem; font-size: .9rem; }
.top nav a { font-weight: 500; color: var(--ink-soft); }
.top nav a:hover { color: var(--brand); }

.rodape {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 2rem 0;
  font-size: .88rem;
  color: var(--ink-soft);
}
.rodape a { color: var(--ink-soft); }

/* -- Tipografia ------------------------------------------------------------ */

h1 { font-size: 1.75rem; line-height: 1.25; margin: 1.6rem 0 .6rem; letter-spacing: -.015em; }
h2 { font-size: 1.25rem; margin: 2.2rem 0 .7rem; letter-spacing: -.01em; }
h3 { font-size: 1.03rem; margin: 1.4rem 0 .4rem; }

.lead { font-size: 1.06rem; color: var(--ink-soft); margin: 0 0 1.4rem; }
.mini { font-size: .85rem; color: var(--ink-faint); }

p { margin: 0 0 1rem; }
a { color: var(--brand); }

/* -- Formulários ----------------------------------------------------------- */

.painel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin: 0 0 1.5rem;
}

.campos { display: grid; gap: .9rem; }
@media (min-width: 560px) { .campos--2 { grid-template-columns: 1fr 1fr; } }

.campo { display: flex; flex-direction: column; gap: .3rem; }
.campo label { font-size: .87rem; font-weight: 600; color: var(--ink-soft); }
.campo .ajuda { font-size: .78rem; color: var(--ink-faint); }

input[type="text"], input[type="number"], input[type="date"], select {
  width: 100%;
  padding: .68rem .75rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 9px;
  /* 16px evita o zoom automático do Safari no iPhone ao focar o campo. */
}
input:focus, select:focus, button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 1px;
}

.btn {
  display: inline-block;
  padding: .72rem 1.25rem;
  font: inherit;
  font-weight: 600;
  color: var(--brand-ink);
  background: var(--brand);
  border: 0;
  border-radius: 9px;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.btn:hover { filter: brightness(1.08); }
.btn--largo { width: 100%; margin-top: .3rem; }
.btn--fraco { background: transparent; color: var(--brand); border: 1px solid var(--line); }

/* -- Resultado ------------------------------------------------------------- */

.saida { display: none; margin: 0 0 1.5rem; }
.saida.on { display: block; }

.total {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  text-align: center;
  margin-bottom: .9rem;
}
.total__rot { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-faint); }
.total__val { font-size: 2rem; font-weight: 800; letter-spacing: -.02em; margin-top: .15rem; }

.linhas { width: 100%; border-collapse: collapse; font-size: .94rem; }
.linhas th, .linhas td { padding: .6rem .5rem; border-bottom: 1px solid var(--line); text-align: left; }
.linhas td:last-child, .linhas th:last-child { text-align: right; white-space: nowrap; }
.linhas tr:last-child td { border-bottom: 0; }
.linhas .neg td { color: var(--bad); }
.linhas .som td { font-weight: 700; }

.rolagem { overflow-x: auto; }

.aviso {
  border-left: 3px solid var(--warn);
  background: var(--bg-alt);
  padding: .8rem 1rem;
  border-radius: 0 9px 9px 0;
  font-size: .9rem;
  margin: 1.2rem 0;
}

/* -- Jogos ----------------------------------------------------------------- */

.jogo { text-align: center; }

/* Em tela estreita, cada pixel de respiro do painel sai do tamanho da casa —
   e casa pequena demais vira erro de toque. Abaixo de 420px o painel de jogo
   encosta nas bordas para devolver essa largura à grade. */
@media (max-width: 420px) {
  /* A margem negativa cancela o respiro do .wrap: só o painel de jogo sai da
     coluna de texto, e a largura recuperada vira tamanho de casa. */
  .jogo {
    padding: .9rem .35rem;
    margin-left: -1.1rem;
    margin-right: -1.1rem;
    border-left: 0;
    border-right: 0;
    border-radius: 0;
  }
  .jogo .grade, .jogo .sudoku { max-width: 100%; }
}

.placar {
  display: flex; justify-content: center; gap: 1.6rem;
  margin: 0 0 1rem; font-size: .85rem; color: var(--ink-soft);
}
.placar b { display: block; font-size: 1.15rem; color: var(--ink); }

.teclado { display: grid; gap: .3rem; margin-top: 1.1rem; }
.teclado__fila { display: flex; justify-content: center; gap: .3rem; }
.tecla {
  flex: 1 1 auto; min-width: 0; max-width: 44px; height: 46px;
  font: inherit; font-weight: 700; font-size: .95rem;
  color: var(--ink); background: var(--bg-alt);
  border: 1px solid var(--line); border-radius: 7px; cursor: pointer;
}
.tecla:disabled { opacity: .32; cursor: default; }
.tecla.ok  { background: var(--ok);  color: #fff; border-color: transparent; }
.tecla.err { background: var(--bad); color: #fff; border-color: transparent; }

.grade { display: grid; gap: 2px; justify-content: center; margin: 0 auto; }
.cel {
  width: 100%; aspect-ratio: 1;
  display: grid; place-items: center;
  font-weight: 700; font-size: clamp(.8rem, 3.4vw, 1.05rem);
  background: var(--bg-card); border: 1px solid var(--line);
  user-select: none; cursor: pointer;
}
.cel.mar { background: var(--brand); color: var(--brand-ink); border-color: transparent; }
.cel.fix { background: var(--bg-alt); color: var(--ink-soft); }
.cel.sel { outline: 2px solid var(--brand); outline-offset: -2px; }
.cel.err { color: var(--bad); }

.palavra { font-size: clamp(1.4rem, 7vw, 2.2rem); letter-spacing: .28em; font-weight: 700; margin: .8rem 0; }

.lista-alvo { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: center; margin: 1rem 0; }
.lista-alvo span {
  font-size: .84rem; padding: .22rem .6rem;
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: 99px;
}
.lista-alvo span.achou { text-decoration: line-through; opacity: .5; }

.opcoes { display: grid; gap: .55rem; margin: 1rem 0; text-align: left; }
.opcao {
  padding: .75rem .9rem; font: inherit; text-align: left; cursor: pointer;
  background: var(--bg-card); color: var(--ink);
  border: 1px solid var(--line); border-radius: 9px;
}
.opcao:hover:not(:disabled) { border-color: var(--brand); }
.opcao.ok  { background: var(--ok);  color: #fff; border-color: transparent; }
.opcao.err { background: var(--bad); color: #fff; border-color: transparent; }
.opcao:disabled { cursor: default; }

.forca-svg { width: 190px; max-width: 60vw; height: auto; margin: 0 auto; display: block; }
.forca-svg line, .forca-svg circle { stroke: var(--ink-soft); stroke-width: 4; fill: none; stroke-linecap: round; }

.recado { min-height: 1.6rem; font-weight: 600; margin: .8rem 0; }
.recado.bom { color: var(--ok); }
.recado.ruim { color: var(--bad); }

/* -- Conteúdo de apoio ----------------------------------------------------- */

.faq details {
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: .75rem 1rem;
  margin-bottom: .55rem;
  background: var(--bg-card);
}
.faq summary { font-weight: 600; cursor: pointer; }
.faq details[open] summary { margin-bottom: .5rem; }

.grade-links { display: grid; gap: .7rem; margin: 1rem 0; }
@media (min-width: 560px) { .grade-links { grid-template-columns: 1fr 1fr; } }
.grade-links a {
  display: block; padding: .85rem 1rem;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: 9px; text-decoration: none; color: var(--ink);
}
.grade-links a:hover { border-color: var(--brand); }
.grade-links b { display: block; color: var(--brand); }
.grade-links span { font-size: .85rem; color: var(--ink-soft); }

/* -- Publicidade ----------------------------------------------------------- */

/* Moldura e rótulo separam anúncio de conteúdo, como a política do AdSense
   exige. Nada colado em botão, nada sobreposto, nada disfarçado de resultado. */
.ad { margin: 2rem auto; text-align: center; }
.ad__rot {
  font-size: .66rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-faint); margin: 0 0 .4rem;
}
.ad ins { display: block; }

@media print { .ad, .top, .rodape { display: none !important; } }