.topo-laboratorio, .tela-selecao, .painel-instrucao, .painel-material, .painel-adicao, .painel-resultado, .partes-fornecidas, .resposta-todo { background: var(--branco); border: 1px solid var(--borda); border-radius: var(--raio-cartao); box-shadow: var(--sombra-cartao); }
.topo-laboratorio { padding: .4rem .55rem; }
button { min-height: 2.75rem; padding: .55rem .8rem; color: var(--texto-principal); background: var(--branco); border: 2px solid var(--azul-acao); border-radius: var(--raio-botao); font: inherit; font-weight: 700; cursor: pointer; }
button:hover { background: var(--azul-hover); }
button:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--foco); outline-offset: 3px; }
button[aria-pressed="true"] { color: var(--branco); background: var(--azul-acao); }
.acoes-desafio [data-action="new-challenge"] {
  min-height: 2.75rem;
  padding: .55rem .8rem;
  color: var(--azul-acao);
  background: var(--branco);
  border: 2px solid var(--azul-acao);
  box-shadow: 0 1px 2px rgb(23 107 135 / 12%);
}
.acoes-desafio [data-action="new-challenge"]:hover {
  color: var(--azul-acao-hover);
  background: var(--azul-bebe);
  border-color: var(--azul-acao-hover);
}
.acoes-desafio [data-action="new-challenge"]:focus-visible {
  outline: 3px solid var(--foco);
  outline-offset: 3px;
}
.acoes-desafio [data-action="new-challenge"]:active {
  color: var(--branco);
  background: var(--azul-acao-hover);
  border-color: var(--azul-acao-hover);
  box-shadow: inset 0 2px 3px rgb(0 0 0 / 18%);
}
.cartao-escolha { display: grid; min-height: 9rem; align-content: center; gap: .45rem; padding: 1rem; text-align: left; background: var(--branco); border-color: var(--borda); box-shadow: var(--sombra-cartao); }
.cartao-escolha strong { font-size: 1.2rem; }
.cartao-escolha span { color: var(--texto-secundario); font-weight: 400; }
.painel-instrucao { background: var(--azul-bebe); }
.apoio-curto { margin-bottom: .3rem; font-size: .9rem; line-height: 1.3; }
.area-ordem { background: #fffdf6; border: 2px dashed #d8b95c; border-radius: .75rem; }
.area-ordem:focus-visible { border-style: solid; }
.peca { display: inline-block; flex: 0 0 auto; min-height: 0; padding: 0; background-color: var(--dourado-claro); border: 2px solid var(--dourado); border-radius: .25rem; box-shadow: inset -2px -2px 0 rgba(138,100,18,.18); }
button.peca { cursor: grab; }
.peca-unit { width: 1.45rem; height: 1.45rem; }
.peca-ten { width: 1.3rem; height: 4.5rem; background-image: repeating-linear-gradient(to bottom, transparent 0, transparent 8%, rgba(138,100,18,.22) 9%, rgba(138,100,18,.22) 10%); }
.peca-hundred { width: 4.25rem; height: 4.25rem; background-image: repeating-linear-gradient(0deg, transparent 0, transparent 9%, rgba(138,100,18,.18) 9%, rgba(138,100,18,.18) 10%), repeating-linear-gradient(90deg, transparent 0, transparent 9%, rgba(138,100,18,.18) 9%, rgba(138,100,18,.18) 10%); }
.peca-thousand { width: 4.25rem; height: 4.25rem; border-width: 4px; box-shadow: inset -10px -10px 0 rgba(138,100,18,.2), 4px 4px 0 rgba(138,100,18,.35); }
.grupo-troca, .controle-valor { background: var(--verde-claro); border: 1px solid #b9dec4; border-radius: .65rem; }
.parcelas-construidas { background: var(--azul-bebe); border: 2px dashed var(--azul-acao); border-radius: .65rem; font-size: 1.15rem; font-weight: 800; }
.equivalencia-terminal { grid-column: 1 / -1; margin: 0; padding: .2rem .4rem; color: var(--texto-principal); background: var(--azul-bebe); border-radius: .65rem; font-size: .86rem; line-height: 1.2; font-weight: 700; }
.expressao { display: block; margin-top: .75rem; padding: .75rem; color: var(--texto-principal); background: var(--azul-bebe); border-radius: .65rem; font-size: clamp(1.1rem, 3vw, 1.45rem); font-weight: 800; text-align: center; }
.total-atual { margin: 0; color: var(--azul-acao); font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; line-height: 1; }
.feedback { min-height: 2.75rem; margin: 0; display: flex; align-items: center; color: var(--texto-principal); font-weight: 700; }
.revelacao { min-height: 2.75rem; padding: .15rem .35rem; display: flex; align-items: center; justify-content: space-between; gap: .35rem; background: var(--verde-claro); border-radius: .65rem; }
.expressao-final { font-size: 1.15rem; }
.expressao-dada { margin: 0; }
[hidden] { display: none!important; }