.app-demo{max-width:400px;margin:0 auto}.demo-screen{background-color:var(--white);border-radius:20px;box-shadow:0 8px 24px #00000026;padding:2rem;min-height:400px;display:flex;flex-direction:column;justify-content:center}.screen{display:none;text-align:center}.screen.active{display:block;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.screen h3{color:var(--primary-blue);margin-bottom:1.5rem;font-size:1.5rem}.demo-tagline{color:var(--primary-teal);font-style:italic;margin-bottom:2rem}.demo-button{background-color:var(--primary-teal);color:var(--white);border:none;padding:.875rem 1.75rem;border-radius:50px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s ease;margin:.5rem;box-shadow:0 4px 12px #4a9b8e4d}.demo-button:hover{background-color:var(--primary-blue);transform:translateY(-2px);box-shadow:0 6px 16px #4a9b8e66}.demo-button.secondary{background-color:var(--neutral-medium)}.demo-button.secondary:hover{background-color:var(--neutral-dark)}.button-group{display:flex;flex-direction:column;gap:.75rem;margin-top:1rem}.warmup-animation{font-size:2rem;margin:2rem 0;animation:bounce 1s ease infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.activity-demo{margin:2rem 0;padding:2rem;background-color:var(--neutral-light);border-radius:12px;font-size:1.25rem}.completion-message{font-size:1.25rem;color:var(--primary-teal);font-weight:600;margin:1.5rem 0}.library-list{margin:1.5rem 0;text-align:left}.library-item{padding:.75rem 1rem;background-color:var(--neutral-light);border-radius:8px;margin-bottom:.5rem;border-left:4px solid var(--primary-teal)}.library-item.premium{border-left-color:var(--accent-warm);background:linear-gradient(135deg,#FFF9E6 0%,var(--neutral-light) 100%);font-weight:600}.premium-features{text-align:left;margin:1.5rem 0}.premium-features .feature{padding:.75rem;margin-bottom:.5rem;font-size:1.05rem}@media (max-width: 768px){.demo-screen{padding:1.5rem;min-height:350px}.screen h3{font-size:1.25rem}}