#yardie-solids-guide .result-correct{background:#d4edda;border:2px solid #28a745;color:#155724}#yardie-solids-guide .result-wrong{background:#f8d7da;border:2px solid #dc3545;color:#721c24}#yardie-solids-guide .percentage-bar{background:#ecf0f1;height:30px;border-radius:15px;overflow:hidden;margin:15px 0;position:relative}#yardie-solids-guide .percentage-fill{height:100%;background:linear-gradient(90deg,#667eea 0%,#764ba2 100%);transition:width 1.5s ease;display:flex;align-items:center;justify-content:flex-end;padding-right:15px;color:white;font-weight:700}#yardie-solids-guide .checklist-item.checked{background:#d4edda;border-left-color:#28a745;text-decoration:line-through;opacity:.7}#yardie-solids-guide .flip-card.flipped{transform:rotateY(180deg)}