/* Reset styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  background-color: #f9f9f9;
  padding: 20px;
}

/* Campaign container */
.campaign-container {
  width: 100%;
  max-width: 1000px;
  text-align: center;
  background-color: white;
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

h1 {
  color: #333;
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.intro-text {
  color: #555;
  font-size: 1.1rem;
  margin-bottom: 30px;
  line-height: 1.6;
}

h2, h3 {
  color: #333;
  font-size: 1.8rem;
  margin: 20px 0;
}

ul {
  list-style-type: none;
  padding: 0;
}

ul li {
  font-size: 1.1rem;
  color: #555;
  margin-bottom: 10px;
  text-align: left;
}

footer {
  margin-top: 40px;
  font-size: 0.9rem;
  color: #777;
}

footer p {
  margin-bottom: 0;
}

/* Form container */
.form-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 30px;
}

/* Form box styling */
.form-box {
  background-color: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
  text-align: center;
}

h2 {
  color: #333;
  margin-bottom: 20px;
  font-size: 1.5rem;
}

/* Label styling */
label {
  display: block;
  margin-bottom: 8px;
  color: #555;
  font-size: 1rem;
}

/* Input field styling */
input[type="email"] {
  width: 100%;
  padding: 12px;
  margin-bottom: 20px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  transition: border 0.3s;
}

/* Change input border color on focus */
input[type="email"]:focus {
  border-color: #4D90FE;
  outline: none;
}

/* Button styling */
button {
  width: 100%;
  padding: 12px;
  background-color: #007BFF;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: background-color 0.3s;
}

/* Button hover effect */
button:hover {
  background-color: #0056b3;
}

/* Hidden message */
.hidden {
  display: none;
}

/* Message box styling */
#message {
  margin-top: 15px;
  font-size: 1rem;
  color: #333;
}

/* Success message styling */
.success {
  color: #28a745;
}

/* Error message styling */
.error {
  color: #dc3545;
}