.button {
  display: inline-block;
  margin: 10px;
  padding: 20px 20px;
  font-size: 20px;
  color: white;
  background: #0066cc;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.2s ease;
}

.button:hover {
  background: #004d99;
}

/* Mode selector */
.mode-selector {
    text-align: center;
    margin-bottom: 10px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
}

.mode-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin: 15px 0;
}

.mode-buttons button {
    padding: 12px 24px;
    border: 2px solid #dee2e6;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.mode-buttons button.active {
    background: #007bff;
    color: white;
    border-color: #007bff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
}

.mode-description {
    margin-top: 10px;
    color: #6c757d;
    font-style: italic;
}