/* Styles for flexbook layout extracted from inline <style> */
.flexbook-container { padding: 2rem; }
.chapter-header { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: white; padding: 2rem; border-radius: 0.5rem; margin-bottom: 2rem; text-align: center; }
.central-question { background-color: #fff3cd; border: 1px solid #ffeaa7; border-radius: 0.375rem; padding: 1rem; margin: 1rem 0; border-left: 4px solid #f39c12; }
.learning-objectives { background-color: #d1ecf1; border: 1px solid #bee5eb; border-radius: 0.375rem; padding: 1rem; margin: 1rem 0; }
.concept-box { background-color: #f8f9fa; border: 1px solid #dee2e6; border-radius: 0.375rem; padding: 1rem; margin: 1rem 0; border-left: 4px solid #0d6efd; }
.historical-context { background-color: #e7f3ff; border: 1px solid #b3d9ff; border-radius: 0.375rem; padding: 1rem; margin: 1rem 0; font-style: italic; }
.action-cue { background-color: #d4edda; border: 1px solid #c3e6cb; border-radius: 0.375rem; padding: 1rem; margin: 1rem 0; border-left: 4px solid #28a745; font-weight: bold; }