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rgba(0,0,0,.2)}.start-btn{background:#4CAF50;color:white}.start-btn:hover{background:#45a049}.clear-btn{background:#ff6b6b;color:white}.clear-btn:hover{background:#ff5252}.reset-btn{background:#ffa726;color:white}.reset-btn:hover{background:#ff9800}.cancel-btn{background:#757575;color:white}.cancel-btn:hover{background:#616161}.apply-btn{background:#4CAF50;color:white;flex:1 1}.apply-btn:hover:not(:disabled){background:#45a049}.apply-btn:disabled{background:#cccccc;color:#666;cursor:not-allowed;transform:none;box-shadow:0 2px 8px rgba(0,0,0,.1)}@keyframes pointPulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.2);opacity:.8}}@keyframes boundingBoxPulse{0%,to{opacity:.6;border-width:3px}50%{opacity:1;border-width:4px}}@media (max-width:768px){.preview-calibration-controls{bottom:-10px;right:10px;left:10px;max-width:none}.calibration-active-controls{padding:12px}.action-buttons{justify-content:space-between}.calibration-btn{flex:1 1;min-width:0;padding:8px 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