* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.container {
  background: white;
  padding: 30px 20px;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.1);
  max-width: 400px;
  width: 100%;
  text-align: center;
  position: relative;
}

h1 {
  font-size: 2em;
  margin-bottom: 25px;
  color: #333;
}

.btn {
  display: block;
  width: 100%;
  padding: 18px;
  font-size: 1.2em;
  margin: 12px 0;
  border: none;
  border-radius: 8px;
  color: white;
  background-color: #007BFF;
  text-decoration: none;
  transition: background 0.3s ease;
}

.btn:hover {
  background-color: #0056b3;
}

.btn.mail {
  background-color: #28a745;
}

.btn.mail:hover {
  background-color: #1e7e34;
}

.btn.status {
  background-color: #ffc107;
  color: #333;
}

.btn.status:hover {
  background-color: #e0a800;
}

.footer {
  font-size: 0.7em;
  color: #888;
  margin-top: 20px;
  text-align: center;
}