body {
  font-family: Arial, sans-serif;
  background-color: #f8f9fa;
  text-align: center;
}

.card {
  background-color: white;
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
  width: 350px;
  margin: 0 auto;
}

h1 {
  text-align: center;
  margin-top: 30px;
  color: #495057;
  font-size: 28px;
}

select {
  padding: 8px 15px;
  font-size: 18px;
  border: 2px solid #ced4da;
  border-radius: 8px;
  margin-bottom: 15px;
  background-color: #f8f9fa;
}

button {
  padding: 12px 25px;
  font-size: 20px;
  background-color: #4caf50;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #45a049;
}

#result {
  font-size: 22px;
  font-weight: bold;
  margin-top: 25px;
  color: #343a40;
}

#drawRecords {
  margin-top: 25px;
  font-size: 18px;
  color: #6c757d;
}

#totalDrawCount,
#totalProfit,
#totalSpent,
#profitOrLoss {
  font-size: 20px;
  margin-top: 15px;
  color: #343a40;
}

.about-link {
  margin-top: 30px;
  font-size: 18px;
  color: #007bff;
  text-decoration: none;
}

.about-link:hover {
  text-decoration: underline;
}

#video {
  display: none;
}

#canvas {
  position: absolute;
  top: 0;
  width: 100%;
  max-width: 540px;
  left: 50%;
  transform: translateX(-50%);
  display: none;
}