/* styles.css */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: linear-gradient(to right, #4facfe, #00f2fe);
  color: #fff;
  text-align: center;
}

.container {
  margin: 20px auto;
  padding: 20px;
  max-width: 800px;
  background: rgba(0, 0, 0, 0.8);
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

h1 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.controls {
  margin-bottom: 20px;
}

button {
  background: #ff5722;
  border: none;
  padding: 10px 20px;
  font-size: 1rem;
  border-radius: 5px;
  cursor: pointer;
  color: #fff;
  margin: 5px;
  transition: background 0.3s ease;
}

button:hover {
  background: #e64a19;
}

#currentNumberWrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 20px auto;
}

#currentLetter {
  font-size: 4rem;
  font-weight: bold;
  color: #fff;
}

#currentNumber {
  font-size: 4rem;
  font-weight: bold;
  width: 100px;
  height: 100px;
  line-height: 100px;
  border-radius: 50%;
  background: #fff;
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  border: 2px solid #4caf50;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

thead th {
  background-color: #4caf50;
  padding: 10px;
  font-size: 1.2rem;
}

tbody td {
  text-align: center;
  padding: 10px;
  border: 1px solid #ddd;
  background: #fff;
  color: #000;
  font-size: 1rem;
  transition: background 0.3s ease;
}

tbody td.marked {
  background: #ff5722;
  color: #fff;
  font-weight: bold;
}