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0;border:none;margin-bottom:8px;padding:0}mark{background:#ffea8a}.units-converter{background:#fff;border-radius:8px;padding:16px;box-shadow:0 1px 6px #0000000f}.control-group{flex-direction:column;gap:6px;margin-top:12px;display:flex}.control-group label{font-size:14px;font-weight:500}.control-group select,.control-group input{border:1px solid #ddd;border-radius:6px;padding:8px;font-size:14px}.swap-btn{background:#5a7b9a;margin-top:12px;padding:10px 16px}.swap-btn:hover{background:#476583}.filter-group{background:#f9f9fc;border-radius:6px;margin-top:16px;padding:12px}.filter-group label{margin-bottom:8px;font-weight:500;display:block}.length-inputs{align-items:center;gap:8px;display:flex}.length-inputs input{border:1px solid #ddd;border-radius:6px;flex:1;padding:8px;font-size:14px}.length-inputs span{color:#666;font-weight:500}.youtube-player{background:#fff;border-radius:8px;padding:16px;box-shadow:0 1px 6px #0000000f}.progress-section{margin-top:16px}.progress-bar-container{cursor:pointer;padding:12px 0}.progress-bar-background{background:#e0e0e0;border-radius:3px;height:6px;position:relative;overflow:visible}.progress-selection{background:#1e90ff66;border-radius:3px;height:100%;position:absolute;top:0}.progress-current{background:#1e90ff;border-radius:2px;width:4px;height:12px;position:absolute;top:50%;transform:translate(-50%)translateY(-50%)}.progress-handle{cursor:grab;background:#fff;border:3px solid #1e90ff;border-radius:50%;width:16px;height:16px;transition:transform .1s;position:absolute;top:50%;transform:translate(-50%)translateY(-50%);box-shadow:0 2px 4px #0003}.progress-handle:hover{transform:translate(-50%)translateY(-50%)scale(1.2)}.progress-handle:active{cursor:grabbing}.time-display{color:#666;justify-content:space-between;margin-top:8px;font-size:12px;display:flex}.time-inputs{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:16px;display:grid}.playback-controls{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:16px;display:flex}.playback-controls button{color:#fff;cursor:pointer;background:#1e90ff;border:none;border-radius:6px;padding:10px 16px;font-size:14px;transition:background .2s}.playback-controls button:hover{background:#1873cc}.playback-controls button:active{background:#135aa1}.loop-status{text-align:center;background:#f0f8ff;border-radius:6px;margin-top:16px;padding:12px}.loop-status p{color:#333;margin:0}@media (width<=600px){.playback-controls{justify-content:space-around}.playback-controls button{padding:8px 12px;font-size:12px}.time-inputs{grid-template-columns:1fr}.criteria-row{flex-direction:column;align-items:stretch}}