*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;color:#333;background-color:#f5f5f5}.header{background:linear-gradient(135deg,#2ecc71,#27ae60);color:#fff;padding:2rem 1rem;text-align:center;box-shadow:0 2px 10px #0000001a}.header h1{font-size:2.5rem;margin-bottom:.5rem;font-weight:700}.header p{font-size:1.1rem;opacity:.9}.main{max-width:1400px;margin:2rem auto;padding:0 1rem;display:grid;gap:2rem;grid-template-columns:350px 1fr}@media (max-width: 1024px){.main{grid-template-columns:1fr}}.controls-section,.tracks-section{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 4px 20px #0000001a;border:1px solid #e0e0e0}.controls-section h2,.tracks-section h2{font-size:1.5rem;margin-bottom:1.5rem;color:#2c3e50;border-bottom:2px solid #2ecc71;padding-bottom:.5rem}.control-group{margin-bottom:1.5rem}.control-group label{display:block;margin-bottom:.5rem;font-weight:600;color:#555}.control-group select,.control-group input[type=text],.control-group input[type=number],.control-group input[type=date]{width:100%;padding:.75rem;border:2px solid #ddd;border-radius:8px;font-size:1rem;transition:border-color .3s ease}.control-group select:focus,.control-group input:focus{outline:none;border-color:#2ecc71}.range-inputs{display:flex;align-items:center;gap:.5rem}.range-inputs input{flex:1}.range-inputs span{color:#666;font-weight:600}input[type=range]{width:100%;margin:.5rem 0}.random-settings{background:#f8f9fa;padding:1rem;border-radius:8px;margin-top:1rem;border:1px solid #e9ecef}.random-settings .control-group{margin-bottom:1rem}.random-settings .control-group:last-child{margin-bottom:0}.filter-section h3{font-size:1.2rem;margin:1.5rem 0 1rem;color:#2c3e50;border-bottom:1px solid #ddd;padding-bottom:.5rem}#clearFilters{width:100%;padding:.75rem;background:#e74c3c;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:1rem;font-weight:600;transition:background-color .3s ease;margin-top:1rem}#clearFilters:hover{background:#c0392b}.btn-primary,#refreshBtn{padding:.75rem 1.5rem;background:#2ecc71;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:1rem;font-weight:600;transition:background-color .3s ease}.btn-primary:hover,#refreshBtn:hover{background:#27ae60}.btn-primary:disabled,#refreshBtn:disabled{background:#ccc;cursor:not-allowed}.btn-execute{width:100%;padding:.75rem;background:#3498db;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:1rem;font-weight:600;transition:background-color .3s ease;margin-top:1rem}.btn-execute:hover{background:#2980b9}.tracks-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.track-count{font-weight:600;color:#666}.tracks-list{max-height:70vh;overflow-y:auto;border:1px solid #ddd;border-radius:8px;background:#fff}.track-item{padding:1.5rem;border-bottom:1px solid #eee;transition:background-color .2s ease}.track-item:hover{background-color:#f8f9fa}.track-item:last-child{border-bottom:none}.track-info h4{font-size:1.2rem;margin-bottom:.5rem;color:#2c3e50}.track-info p{color:#666;font-size:.95rem;margin-bottom:.25rem}.track-meta{display:flex;gap:1rem;font-size:.9rem;margin:.5rem 0;flex-wrap:wrap}.popularity-score{color:#f39c12;font-weight:600;background:#fef9e7;padding:.25rem .5rem;border-radius:4px}.dam-status{padding:.25rem .5rem;border-radius:4px;font-weight:600;font-size:.8rem}.dam-available{background:#d5f4e6;color:#27ae60}.dam-unavailable{background:#ffeaa7;color:#d63031}.notification{position:fixed;top:20px;right:20px;padding:1rem 1.5rem;border-radius:8px;color:#fff;font-weight:600;z-index:1000;opacity:0;transform:translate(100%);transition:all .3s ease;max-width:300px}.notification.show{opacity:1;transform:translate(0)}.notification.success{background:#27ae60}.notification.error{background:#e74c3c}.notification.info{background:#3498db}.loading{display:flex;justify-content:center;align-items:center;padding:3rem;color:#666}.spinner{border:3px solid #f3f3f3;border-top:3px solid #2ecc71;border-radius:50%;width:30px;height:30px;animation:spin 1s linear infinite;margin-right:.5rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:3rem 1rem;color:#666}.empty-state h3{margin-bottom:.5rem;font-size:1.2rem}@media (max-width: 1024px){.main{grid-template-columns:1fr}.controls-section{order:2}.tracks-section{order:1}}@media (max-width: 767px){.header h1{font-size:2rem}.main{margin:1rem auto}.controls-section,.tracks-section{padding:1.5rem}.range-inputs{flex-direction:column;gap:.25rem}.range-inputs span{align-self:center}.track-meta{flex-direction:column;gap:.5rem}.tracks-controls{flex-direction:column;gap:1rem;align-items:stretch}.notification{right:10px;left:10px;max-width:none}}