* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background:
    radial-gradient(circle at top, rgba(255,255,255,0.2), transparent 40%),
    linear-gradient(180deg, #3b2415, #140c08);
  color: #2b1a0e;
}

.pagina {
  min-height: 100vh;
  padding: 18px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cartao {
  width: 100%;
  max-width: 520px;
  background: #ead3a2;
  background-image: linear-gradient(180deg, #f3dfb2, #d7b574);
  border: 4px solid #5b351b;
  border-radius: 22px;
  padding: 24px 18px;
  box-shadow: 0 12px 35px rgba(0,0,0,0.45);
  text-align: center;
}

.simbolo {
  width: 180px;
  max-width: 70%;
  margin-bottom: 12px;
}

h1 {
  margin: 0;
  font-size: 2.1rem;
  color: #641f17;
  letter-spacing: 1px;
}

.subtitulo {
  margin-top: 4px;
  margin-bottom: 22px;
  font-size: 1.05rem;
  color: #5b351b;
  font-weight: bold;
}

.historia {
  text-align: left;
  font-size: 1.05rem;
  line-height: 1.55;
}

.historia p {
  margin: 0 0 14px;
}

.botao {
  display: block;
  margin-top: 26px;
  padding: 16px 20px;
  background: #8b251a;
  color: #fff3d0;
  text-decoration: none;
  border-radius: 14px;
  font-size: 1.25rem;
  font-weight: bold;
  border: 2px solid #4a170f;
  box-shadow: 0 5px 0 #4a170f;
}

.botao:active {
  transform: translateY(3px);
  box-shadow: 0 2px 0 #4a170f;
}

.oculto {
  display: none;
}

.campo-codigo {
  width: 100%;
  padding: 15px;
  margin: 18px 0;
  border-radius: 12px;
  border: 2px solid #5b351b;
  font-size: 1.2rem;
  text-align: center;
  text-transform: uppercase;
  background: #fff4d2;
  color: #2b1a0e;
}

.pergunta {
  font-size: 1.25rem;
  line-height: 1.4;
  font-weight: bold;
  margin-bottom: 20px;
}

.opcao {
  display: block;
  width: 100%;
  margin: 12px 0;
  padding: 15px;
  border-radius: 14px;
  border: 2px solid #5b351b;
  background: #f6dfaa;
  color: #2b1a0e;
  font-size: 1.15rem;
  font-weight: bold;
  cursor: pointer;
}

.opcao:active {
  transform: scale(0.98);
}

.mensagem-erro {
  color: #8b251a;
  font-weight: bold;
  min-height: 24px;
}

.mensagem-final {
  font-size: 1.35rem;
  line-height: 1.5;
}

.citacao {
  margin: 18px 0;
  padding: 16px;
  background: rgba(255, 244, 210, 0.75);
  border-left: 5px solid #8b251a;
  border-radius: 10px;
  font-size: 1.1rem;
  line-height: 1.5;
  font-style: italic;
}