Add a drawing tool so users create their own flipbook in real time. Store each stroke per frame.
.page-indicator background: #00000066; backdrop-filter: blur(12px); padding: 8px 20px; border-radius: 60px; color: white; font-weight: 600; font-size: 1.2rem; letter-spacing: 1px; font-family: monospace; box-shadow: inset 0 0 2px rgba(255,255,200,0.6), 0 4px 12px rgba(0,0,0,0.2); flipbook codepen