/* Calculadora financeira RPN: corpo grafite, visor verde, teclas com funções f (âmbar) e g (turquesa).
   O corpo da calculadora é escuro nos dois temas, como um aparelho; o diálogo de ajustes segue o tema do site. */
.rpn {
  --rpn-corpo-1: #222930;
  --rpn-corpo-2: #14181c;
  --rpn-tecla-1: #3a424b;
  --rpn-tecla-2: #2a3037;
  --rpn-faixa: #1f242a;
  --rpn-borda: #4b5560;
  --rpn-digito-1: #47515c;
  --rpn-digito-2: #353d46;
  --rpn-texto: #f1f3f5;
  --rpn-f: #ffb547;
  --rpn-f-1: #ffc66e;
  --rpn-f-2: #f0a033;
  --rpn-g: #3dd6c3;
  --rpn-g-1: #63e4d4;
  --rpn-g-2: #2cb9a8;
  --rpn-on-1: #4a3535;
  --rpn-on-2: #382828;
  --rpn-on-texto: #ff8a7a;
  --rpn-escuro: #15191c;
  --rpn-lcd-1: #13241e;
  --rpn-lcd-2: #0b1612;
  --rpn-lcd-borda: #29473c;
  --rpn-lcd-texto: #8cf7c8;
  --rpn-lcd-apagado: #24443a;
  --rpn-lcd-erro: #ff8a7a;
  --rpn-painel-fundo: #11161b;
  --rpn-painel-borda: #2a323b;
  --rpn-painel-texto: #c3cdd6;
  --rpn-painel-apagado: #66727e;

  display: grid;
  gap: clamp(10px, 2vw, 16px);
  width: min(100%, 980px);
  margin: 0 auto;
  padding: clamp(8px, 2vw, 18px);
  background: linear-gradient(180deg, var(--rpn-corpo-1), var(--rpn-corpo-2));
  border: 1px solid #313942;
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  color: var(--rpn-texto);
}

/* ---------- Visor e painel ---------- */
.rpn .rpn-topo {
  display: flex;
  gap: clamp(8px, 1.6vw, 14px);
}
.rpn .rpn-lcd {
  flex: 1 1 0;
  display: grid;
  align-content: space-between;
  gap: 6px;
  min-width: 0;
  min-height: 132px;
  padding: 10px 14px;
  background: linear-gradient(180deg, var(--rpn-lcd-1), var(--rpn-lcd-2));
  border: 1px solid var(--rpn-lcd-borda);
  border-radius: 10px;
  color: var(--rpn-lcd-texto);
}
.rpn .rpn-lcd-cabecalho {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.06em;
  color: var(--rpn-lcd-texto);
}
.rpn .rpn-lcd-cabecalho span:first-child {
  opacity: 0.55;
}
.rpn .rpn-lcd-numero {
  display: flex;
  justify-content: flex-end;
  align-items: baseline;
  gap: 0.3em;
  min-width: 0;
  overflow: hidden;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: clamp(26px, 6vw, 46px);
  font-weight: 300;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  white-space: nowrap;
}
.rpn .rpn-lcd-expoente {
  font-size: 0.72em;
}
.rpn.rpn-com-erro .rpn-lcd-numero {
  color: var(--rpn-lcd-erro);
}
.rpn.rpn-executando .rpn-lcd-numero {
  animation: rpn-piscar 0.9s steps(2, start) infinite;
}
@keyframes rpn-piscar {
  to {
    opacity: 0.35;
  }
}
@media (prefers-reduced-motion: reduce) {
  .rpn.rpn-executando .rpn-lcd-numero {
    animation: none;
  }
}
.rpn .rpn-indicadores {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  color: var(--rpn-lcd-apagado);
}
.rpn .rpn-indicadores .rpn-ligado {
  color: var(--rpn-lcd-texto);
}
.rpn .rpn-indicador-extra {
  margin-left: auto;
}
.rpn .rpn-leitura {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.rpn .rpn-painel {
  flex: 0 0 clamp(180px, 30%, 270px);
  display: grid;
  align-content: start;
  gap: 6px;
  min-width: 0;
  padding: 8px 12px 10px;
  background: var(--rpn-painel-fundo);
  border: 1px solid var(--rpn-painel-borda);
  border-radius: 10px;
  color: var(--rpn-painel-texto);
}
.rpn .rpn-abas {
  display: flex;
  gap: 4px;
}
.rpn .rpn-aba {
  min-height: 32px;
  padding: 4px 10px;
  font: inherit;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--rpn-painel-apagado);
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}
.rpn .rpn-aba.active {
  color: var(--rpn-painel-texto);
  border-bottom-color: var(--rpn-g);
}
.rpn .rpn-painel-linhas {
  display: grid;
  gap: 2px;
  margin: 0;
}
.rpn .rpn-painel-linhas div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
}
.rpn .rpn-painel-linhas dt {
  color: var(--rpn-painel-apagado);
}
.rpn .rpn-painel-linhas dd {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
  text-align: right;
}

/* ---------- Teclado ---------- */
.rpn .rpn-teclado {
  container-type: inline-size;
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: clamp(3px, 1vw, 10px);
}
.rpn .rpn-tecla {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-width: 0;
  min-height: clamp(48px, 9.5cqi, 70px);
  padding: 0;
  overflow: hidden;
  font: inherit;
  color: var(--rpn-texto);
  background: linear-gradient(180deg, var(--rpn-tecla-1), var(--rpn-tecla-2));
  border: 1px solid var(--rpn-borda);
  border-radius: 8px;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.45);
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.rpn .rpn-tecla:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
}
.rpn .rpn-tecla:active,
.rpn .rpn-tecla.rpn-pressionada {
  transform: translateY(1px);
  box-shadow: none;
  filter: brightness(1.15);
}
.rpn .rpn-tecla-enter {
  grid-row: span 2;
}
/* Em teclados estreitos o ENTER, que ocupa duas linhas, é escrito na vertical para caber. */
@container (max-width: 520px) {
  .rpn .rpn-tecla-enter .rpn-rotulo {
    writing-mode: vertical-lr;
    text-orientation: upright;
    letter-spacing: -0.12em;
  }
}
.rpn .rpn-rotulo-f,
.rpn .rpn-rotulo-g {
  display: block;
  min-height: 1.1em;
  padding: 2px 1px;
  font-size: clamp(7px, 1.25cqi, 11px);
  font-weight: 650;
  line-height: 1.05;
  overflow-wrap: normal;
  word-break: keep-all;
}
.rpn .rpn-rotulo-f {
  color: var(--rpn-f);
}
.rpn .rpn-rotulo-g {
  color: var(--rpn-g);
  background: var(--rpn-faixa);
}
.rpn .rpn-rotulo {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(10px, 2.2cqi, 19px);
  font-weight: 650;
  line-height: 1;
  white-space: nowrap;
}
.rpn .rpn-tecla-digito {
  background: linear-gradient(180deg, var(--rpn-digito-1), var(--rpn-digito-2));
}
.rpn .rpn-tecla-digito .rpn-rotulo {
  font-size: clamp(13px, 2.6cqi, 22px);
}
.rpn .rpn-tecla-f {
  color: var(--rpn-escuro);
  background: linear-gradient(180deg, var(--rpn-f-1), var(--rpn-f-2));
  border-color: var(--rpn-f-2);
}
.rpn .rpn-tecla-g {
  color: var(--rpn-escuro);
  background: linear-gradient(180deg, var(--rpn-g-1), var(--rpn-g-2));
  border-color: var(--rpn-g-2);
}
.rpn .rpn-tecla-f .rpn-rotulo,
.rpn .rpn-tecla-g .rpn-rotulo {
  font-weight: 850;
}
.rpn .rpn-tecla-f .rpn-rotulo-g,
.rpn .rpn-tecla-g .rpn-rotulo-g {
  background: rgba(0, 0, 0, 0.12);
}
.rpn .rpn-tecla-on {
  color: var(--rpn-on-texto);
  background: linear-gradient(180deg, var(--rpn-on-1), var(--rpn-on-2));
}

/* Prefixo ativo: realça a faixa da função e apaga os rótulos principais. */
.rpn .rpn-prefixo-f .rpn-rotulo-f,
.rpn .rpn-prefixo-g .rpn-rotulo-g {
  font-weight: 850;
}
.rpn .rpn-prefixo-f .rpn-tecla:not(.rpn-tecla-f):not(.rpn-tecla-g) .rpn-rotulo,
.rpn .rpn-prefixo-g .rpn-tecla:not(.rpn-tecla-f):not(.rpn-tecla-g) .rpn-rotulo {
  opacity: 0.45;
}
.rpn .rpn-prefixo-f .rpn-tecla-f,
.rpn .rpn-prefixo-g .rpn-tecla-g {
  box-shadow: 0 0 0 2px var(--rpn-texto);
}

.rpn-dica {
  display: block;
  margin: 12px auto 0;
  max-width: 980px;
}

@media (max-width: 640px) {
  .rpn .rpn-topo {
    flex-direction: column;
  }
  .rpn .rpn-lcd,
  .rpn .rpn-painel {
    flex: none;
  }
  .rpn .rpn-lcd {
    min-height: 112px;
    padding: 8px 10px;
  }
  .rpn .rpn-painel-linhas {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 14px;
  }
  .rpn .rpn-tecla {
    border-radius: 6px;
  }
}

/* ---------- Diálogo de ajustes (segue o tema do site) ---------- */
.rpn-dialogo {
  width: min(92vw, 440px);
  max-height: 90vh;
  padding: 22px;
  overflow: auto;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
}
.rpn-dialogo::backdrop {
  background: rgba(0, 0, 0, 0.6);
}
.rpn-dialogo > div {
  display: grid;
  gap: 16px;
}
.rpn-dialogo .rpn-dialogo-titulo {
  margin: 0;
  font-size: 20px;
  background-image: none;
  color: var(--text);
  -webkit-text-fill-color: currentColor;
}
.rpn-dialogo p {
  margin: 0;
  color: var(--text-2);
}
.rpn-dialogo .rpn-opcao {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  font-size: 15px;
  cursor: pointer;
}
.rpn-dialogo .rpn-opcao input {
  width: 20px;
  height: 20px;
  flex: none;
  accent-color: var(--accent);
}
.rpn-dialogo .rpn-opcao-grupo {
  display: grid;
  gap: 8px;
  font-size: 14px;
  font-weight: 650;
  color: var(--text-2);
}
.rpn-dialogo .rpn-dialogo-acoes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.rpn-dialogo .button.secondary.rpn-perigo,
.rpn-dialogo .button.secondary.rpn-perigo:hover {
  color: #ffb4a8;
}
.rpn-dialogo .button.rpn-perigo:not(.secondary) {
  color: #fff;
  background: #b42318;
  border-color: #b42318;
  box-shadow: none;
}
:root[data-theme="light"] .rpn-dialogo .button.secondary.rpn-perigo,
:root[data-theme="light"] .rpn-dialogo .button.secondary.rpn-perigo:hover {
  color: #b42318;
}