:root {
  --bg-color: #ffffff;
  --text-color: #000000;
  --number-bg: #eee;
  --number-text: #000;
  --btn-bg: #f0f0f0;
  --btn-text: #000;
  --input-bg: #fff;
  --input-border: #ccc;
}

body.dark-mode {
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --number-bg: #333;
  --number-text: #fff;
  --btn-bg: #444;
  --btn-text: #fff;
  --input-bg: #1e1e1e;
  --input-border: #444;
}

body {
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 50px;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

button {
  padding: 10px 20px;
  cursor: pointer;
  background-color: var(--btn-bg);
  color: var(--btn-text);
  border: 1px solid #ccc;
  border-radius: 5px;
  margin: 10px;
}

#lotto-numbers {
  display: flex;
  margin-top: 20px;
}

.lotto-number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--number-bg);
  color: var(--number-text);
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 5px;
  font-size: 20px;
  font-weight: bold;
}

.theme-toggle {
  position: absolute;
  top: 10px;
  right: 10px;
}

.contact-section {
  margin-top: 50px;
  width: 100%;
  max-width: 400px;
  padding: 20px;
  border: 1px solid var(--input-border);
  border-radius: 8px;
}

.form-group {
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
}

.form-group label {
  margin-bottom: 5px;
  font-weight: bold;
}

.form-group input, .form-group textarea {
  padding: 8px;
  border: 1px solid var(--input-border);
  border-radius: 4px;
  background-color: var(--input-bg);
  color: var(--text-color);
}