#loading-overlay{display:none;position:absolute;top:0;left:0;width:100%;height:100%;background:#fffc;z-index:9999;display:flex;justify-content:center;align-items:center}input[readonly]{background-color:#e9ecef;opacity:.65;cursor:not-allowed}#loading-overlay img{max-width:50px;max-height:50px}select[readonly]{background-color:#e9ecef;pointer-events:none;cursor:not-allowed}.text-danger{padding:10px;border:1px solid #dc3545;background-color:#f8d7da;color:#dc3545;border-radius:4px;margin-top:5px}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:9999;display:none}.loading-content{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000001a;text-align:center}.spinner{width:40px;height:40px;border:4px solid #f3f3f3;border-top:4px solid #3498db;border-radius:50%;margin:0 auto 15px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-text{color:#333;font-size:16px;font-weight:500;margin:0}.loading-subtext{color:#666;font-size:14px;margin-top:5px}.button-group-card{background:#ffffffe6;border:2px solid transparent;border-image:linear-gradient(135deg,#007bff,#dc3545) 1;border-radius:12px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 6px 25px #00000014;transition:box-shadow .3s ease,transform .3s ease}.button-group-card:hover{box-shadow:0 10px 30px #0000001f;transform:translateY(-2px)}.custom-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;font-size:16px;font-weight:600;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;border:none;border-radius:12px;color:#fff;text-transform:uppercase;letter-spacing:.8px;transition:all .4s ease;position:relative;overflow:hidden;min-width:150px;background:linear-gradient(135deg,#fff3,#ffffff1a);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.custom-btn i{font-size:18px;transition:transform .3s ease}.btn-primary-gradient{background:linear-gradient(135deg,#007bff,#00d4ff)}.btn-success-gradient{background:linear-gradient(135deg,#28a745,#00ff87)}.btn-info-gradient{background:linear-gradient(135deg,#17a2b8,#00e5ff)}.btn-warning-gradient{background:linear-gradient(135deg,#ffc107,#ff9100)}.btn-danger-gradient{background:linear-gradient(135deg,#dc3545,#ff6b6b)}.btn-primary-gradient:hover{background:linear-gradient(135deg,#00d4ff,#007bff)}.btn-success-gradient:hover{background:linear-gradient(135deg,#00ff87,#28a745)}.btn-info-gradient:hover{background:linear-gradient(135deg,#00e5ff,#17a2b8)}.btn-warning-gradient:hover{background:linear-gradient(135deg,#ff9100,#ffc107)}.btn-danger-gradient:hover{background:linear-gradient(135deg,#ff6b6b,#dc3545)}.custom-btn:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 10px 25px #0003,0 0 15px #ffffff4d}.custom-btn:hover i{transform:scale(1.2)}.custom-btn:active{transform:translateY(0) scale(1);box-shadow:0 3px 10px #00000026}.custom-btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;background:#fff6;border-radius:50%;transform:translate(-50%,-50%);transition:width .6s ease,height .6s ease}.custom-btn:active:before{width:250px;height:250px}@media (max-width: 768px){.custom-btn{padding:10px 20px;font-size:14px;min-width:100%;margin-bottom:12px}.button-group-card{padding:20px}}