body { font-family: Arial, sans-serif; background: #f5f5f5; margin: 0; padding: 0; }

#login-container, #painel, #conteudo-pagamento {
  background: #fff;
  max-width: 400px;
  margin: 40px auto;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px #0001;
}
h1, h2 { color: #1a237e; }
input, button {
  margin: 8px 0;
  padding: 8px;
  width: 100%;
  border-radius: 4px;
  border: 1px solid #ccc;
  box-sizing: border-box;
}
button {
  background: #088a03;
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1em;
}
button:hover { background: #088a03; }
#link-gerado { margin-top: 20px; }
#pix-area { margin-top: 20px; }
img { border-radius: 6px; max-width: 100%; height: auto; }

@media (max-width: 600px) {
  #login-container, #painel, #conteudo-pagamento {
    max-width: 98vw;
    margin: 10px auto;
    padding: 12px;
    box-shadow: 0 1px 4px #0001;
  }
  h1, h2 {
    font-size: 1.2em;
  }
  input, button {
    font-size: 1em;
    padding: 10px 6px;
  }
  #pix-codigo {
    font-size: 0.95em;
  }
}