body {
  background-color: #111;
  color: #fff;
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 40px;
}

.container {
  max-width: 500px;
  margin: 0 auto;
  padding: 20px;
  background-color: #1e1e1e;
  border-radius: 10px;
  box-shadow: 0 0 10px #333;
}

h1 {
  color: #00ffcc;
}

.market-selector {
  margin: 20px 0;
}

select {
  padding: 10px;
  border-radius: 5px;
  font-size: 16px;
}

.signal-box {
  margin-top: 30px;
  padding: 20px;
  font-size: 20px;
  font-weight: bold;
  border-radius: 8px;
  background-color: #222;
  border: 2px solid #555;
}

.call {
  background-color: #00c853;
  color: #fff;
}

.put {
  background-color: #d50000;
  color: #fff;
}

.warning {
  background-color: #ffab00;
  color: #000;
}

.footer {
  margin-top: 30px;
  font-size: 12px;
  color: #888;
}