:root {
  --background-color: #f0f0f0;
  --text-color: #333;
  --lotto-machine-bg: white;
  --button-bg: #4caf50;
  --button-text: white;
  --button-hover-bg: #45a049;
}

body {
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
  --background-color: #333;
  --text-color: #f0f0f0;
  --lotto-machine-bg: #444;
}

.theme-switcher {
  position: absolute;
  top: 1rem;
  left: 1rem;
}

#theme-toggle {
  background-color: var(--button-bg);
  color: var(--button-text);
  border: none;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

#theme-toggle:hover {
  background-color: var(--button-hover-bg);
}

.lotto-machine {
  text-align: center;
  background-color: var(--lotto-machine-bg);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s;
}

.numbers {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
}

.number {
  width: 50px;
  height: 50px;
  background-color: var(--button-bg);
  color: var(--button-text);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 0.5rem;
  font-size: 1.5rem;
  font-weight: bold;
}

#generate {
  background-color: var(--button-bg);
  color: var(--button-text);
  border: none;
  padding: 1rem 2rem;
  font-size: 1rem;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

#generate:hover {
  background-color: var(--button-hover-bg);
}