:root {
  --background-color: #f0f0f0;
  --container-bg-color: white;
  --text-color: #333;
  --number-bg-color: #eee;
  --button-bg-color: #4CAF50;
  --button-hover-bg-color: #45a049;
  --form-input-bg: white;
  --form-input-border: #ccc;
}

body.dark-mode {
  --background-color: #333;
  --container-bg-color: #555;
  --text-color: #f0f0f0;
  --number-bg-color: #444;
  --button-bg-color: #2196F3;
  --button-hover-bg-color: #1976D2;
  --form-input-bg: #444;
  --form-input-border: #666;
}

body {
  font-family: sans-serif;
  display: flex;
  flex-direction: column; /* Changed to column to stack containers */
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: var(--background-color);
  margin: 0;
  transition: background-color 0.3s, color 0.3s;
}

.container {
  text-align: center;
  background-color: var(--container-bg-color);
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s;
  margin-bottom: 20px; /* Added margin for spacing between containers */
  width: 80%; /* Added width for better layout */
  max-width: 500px; /* Added max-width */
}

h1, .contact-form-container h2 { /* Added h2 for contact form */
  margin-bottom: 30px;
  color: var(--text-color);
  transition: color 0.3s;
}

.numbers-container {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
}

.number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--number-bg-color);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  margin: 0 5px;
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s;
}

#generate-btn, #theme-toggle-btn {
  padding: 15px 30px;
  font-size: 18px;
  background-color: var(--button-bg-color);
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

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

/* Contact Form Specific Styles */
.contact-form-container {
  padding: 20px;
}

.contact-form-container form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact-form-container label {
  text-align: left;
  margin-bottom: 5px;
  color: var(--text-color);
}

.contact-form-container input[type="email"],
.contact-form-container textarea {
  padding: 10px;
  border: 1px solid var(--form-input-border);
  border-radius: 5px;
  font-size: 16px;
  background-color: var(--form-input-bg);
  color: var(--text-color);
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.contact-form-container input[type="email"]:focus,
.contact-form-container textarea:focus {
  border-color: var(--button-bg-color);
  outline: none;
}

.contact-form-container button[type="submit"] {
  background-color: var(--button-bg-color);
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 18px;
  transition: background-color 0.3s;
}

.contact-form-container button[type="submit"]:hover {
  background-color: var(--button-hover-bg-color);
}