:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --button-bg: #007bff;
  --button-text: #ffffff;
  --number-bg: #eeeeee;
  --number-text: #333333;
  --input-bg: #ffffff;
  --input-border: #cccccc;
}

[data-theme='dark'] {
  --bg-color: #1a1a1a;
  --text-color: #f0f0f0;
  --button-bg: #0056b3;
  --button-text: #ffffff;
  --number-bg: #333333;
  --number-text: #ffffff;
  --input-bg: #2a2a2a;
  --input-border: #444444;
}

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;
  padding: 0 20px;
}

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

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

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

input, textarea {
  padding: 10px;
  border-radius: 5px;
  border: 1px solid var(--input-border);
  background-color: var(--input-bg);
  color: var(--text-color);
}

textarea {
  min-height: 100px;
  resize: vertical;
}

.submit-btn {
  width: 100%;
  padding: 10px;
  background-color: var(--button-bg);
  color: var(--button-text);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
}

#theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 10px 15px;
  cursor: pointer;
  border-radius: 5px;
  border: none;
  background-color: var(--button-bg);
  color: var(--button-text);
}

#generator-btn {
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  background-color: var(--button-bg);
  color: var(--button-text);
}

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

.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;
}