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tr:hover{background:#f8f9fa}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:#fff;border-radius:12px;padding:0;width:100%;max-height:90vh;overflow:hidden;box-shadow:0 20px 60px #0000004d;animation:modalSlideIn .3s ease}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-50px) scale(.9)}to{opacity:1;transform:translateY(0) scale(1)}}.section-title{font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:1rem;color:#333}.section-subtitle{font-size:1.2rem;text-align:center;color:#666;margin-bottom:3rem}@media (max-width: 768px){.container{padding:0 16px}.btn{padding:10px 20px;font-size:14px}.form-control{padding:10px 14px;font-size:16px}h1{font-size:2rem}h2{font-size:1.75rem}h3{font-size:1.5rem}.section-title{font-size:2rem}.card-body,.card-header,.card-footer{padding:16px}}@media (max-width: 480px){.btn{width:100%;justify-content:center}.modal-content{margin:10px;max-width:calc(100vw - 20px)}.section-title{font-size:1.75rem}}.loading-overlay{position:fixed;inset:0;background:#ffffffe6;display:flex;align-items:center;justify-content:center;z-index:9999}.error-boundary{padding:40px 20px;text-align:center;background:#f8f9fa;border-radius:12px;margin:20px}.error-boundary h2{color:#dc3545;margin-bottom:16px}.error-boundary p{color:#666;margin-bottom:20px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.focus-visible:focus{outline:2px solid #667eea;outline-offset:2px}@media print{.btn,.modal-overlay,.demo-banner{display:none!important}body{background:#fff!important;color:#000!important}.card{box-shadow:none!important;border:1px solid #ddd!important}}