:root {
  --primary-color: #007bff;
  --primary-color-hover: #0056b3;
  --text-color: #333;
  --background-color: #f4f4f4;
  --form-background: #fff;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body.dark-mode {
  --text-color: #f4f4f4;
  --background-color: #333;
  --form-background: #444;
}

body {
  font-family: sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  margin: 0;
  padding: 20px;
  transition: background-color 0.3s, color 0.3s;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

inquiry-form {
  display: block;
  max-width: 500px;
  margin: 0 auto;
}

@media (max-width: 600px) {
  inquiry-form {
    max-width: 100%;
  }
}

.dark-mode-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  cursor: pointer;
  font-size: 24px;
}