:root{--primary-color:#ff6000;--primary-hover:#e05400;--primary-light:rgba(255, 96, 0, 0.1);--bg-main:#0c0c10;--bg-panel:#16161d;--bg-hover:#22222d;--text-main:#e2e2e6;--text-muted:#8b8b9b;--border:#2c2c36;--success:#34c759;--radius:8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-main);height:100vh;flex-direction:column;overflow:hidden}header{height:64px;background-color:var(--bg-panel);border-bottom:1px solid var(--border);box-shadow:0 4px 6px rgba(0,0,0,.2);align-items:center;padding:0 24px;justify-content:space-between;z-index:10}.header-actions button,.logo{font-weight:500;align-items:center}.logo,body,header{display:flex}.logo{gap:12px;font-size:16px}.logo i{color:var(--primary-color);font-size:18px}.logo span,body{color:var(--text-main)}.logo span strong{color:var(--primary-color);font-weight:600}.header-actions button{background-color:var(--bg-main);color:var(--text-main);border:1px solid var(--border);padding:8px 16px;border-radius:var(--radius);font-size:14px;cursor:pointer;transition:all .2s;display:inline-flex;gap:8px}.header-actions button:hover:not(:disabled){background-color:var(--bg-hover);border-color:#444}.header-actions button.button-primary{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.header-actions button.button-primary:hover:not(:disabled){background-color:var(--primary-hover)}.header-actions button:disabled{opacity:.5;cursor:not-allowed;background-color:var(--bg-main);border-color:var(--border);color:var(--text-muted)}main{display:flex;flex:1}.panel{background-color:var(--bg-panel);border-right:1px solid var(--border);display:flex;flex-direction:column}.panel-header{padding:18px 24px;border-bottom:1px solid var(--border);font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.panel-content{flex:1;overflow-y:auto;padding:24px}.left-panel{width:320px;min-width:320px}.upload-area{border:2px dashed var(--border);border-radius:var(--radius);padding:40px 20px;text-align:center;cursor:pointer;transition:all .2s;background-color:var(--bg-main)}.upload-area.dragover,.upload-area:hover{border-color:var(--primary-color);background-color:var(--primary-light)}.upload-icon{font-size:32px;color:var(--primary-color);margin-bottom:15px}.upload-text{font-size:14px;color:var(--text-main);margin-bottom:10px;font-weight:500}.upload-btn{background-color:transparent;color:var(--primary-color);border:1px solid var(--primary-color);padding:8px 16px;border-radius:var(--radius);font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;display:inline-block}.upload-btn:hover{background-color:var(--primary-color);color:#fff}#fileInput,#playerFileInput,.layers-list{display:none}#layer-settings-form.active,.layers-list.active{display:block}.drag-handle{padding:0 10px 0 0;color:#555;cursor:grab;display:flex;align-items:center}.layer-item.dragging{opacity:.4;cursor:grabbing;background-color:var(--bg-hover)}.layer-item.dragging .drag-handle{cursor:grabbing}.layer-item-content,.visibility-toggle{cursor:pointer;display:flex;align-items:center}.layer-item-content{flex-grow:1}.visibility-toggle{padding:10px 0 10px 10px;color:#777;transition:color .2s}.visibility-toggle:hover{color:var(--primary-color)}.hidden-layer .layer-icon,.hidden-layer .layer-info{opacity:.4}.layer-icon,.layer-item{display:flex;align-items:center;border:1px solid var(--border)}.layer-item{background-color:var(--bg-main);border-radius:var(--radius);padding:10px 14px;margin-bottom:12px;transition:all .2s}.layer-item:hover{border-color:#444}.layer-item.selected,.layer-item.selected .layer-icon{border-color:var(--primary-color);background-color:var(--primary-light)}.layer-icon{color:var(--text-muted);font-size:18px;background-color:var(--bg-panel);width:36px;height:36px;border-radius:6px;justify-content:center;margin-right:12px}.layer-item.selected .layer-icon{background-color:var(--primary-color);color:#fff}.layer-info{flex:1;overflow:hidden}.layer-name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:4px;color:var(--text-main)}.layer-type-badge{display:inline-block;font-size:10px;padding:3px 6px;border-radius:4px;background-color:var(--bg-panel);color:var(--text-muted);font-weight:600}.layer-item.selected .layer-type-badge{background-color:transparent;color:var(--primary-color);border:1px solid var(--primary-color)}.center-panel{flex:1;background-color:var(--bg-main);display:flex;flex-direction:column;position:relative}.preview-container{flex:1;background-image:linear-gradient(45deg,#181820 25%,transparent 25%),linear-gradient(-45deg,#181820 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#181820 75%),linear-gradient(-45deg,transparent 75%,#181820 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0;background-color:#0c0c10;overflow:hidden}#lottie-preview{width:100%;height:100%;max-width:500px;max-height:500px;overflow:hidden}#lottie-preview svg,#playerCanvas svg,main{overflow:hidden}.control-btn,.preview-container,.preview-controls{display:flex;align-items:center;justify-content:center}.preview-controls{height:60px;background-color:var(--bg-panel);border-top:1px solid var(--border);gap:20px;padding:0 24px}.control-btn{background:var(--bg-main);color:var(--text-main);border:1px solid var(--border);font-size:14px;cursor:pointer;width:36px;height:36px;border-radius:50%;transition:all .2s}.control-btn:hover{border-color:#555;color:var(--primary-color)}.timeline{flex:1;max-width:400px;height:6px;background-color:var(--bg-main);border-radius:3px;position:relative;cursor:pointer}.timeline-progress{position:absolute;left:0;top:0;height:100%;background-color:var(--primary-color);border-radius:3px;width:0%}.timeline-thumb{position:absolute;top:50%;transform:translate(-50%,-50%);width:14px;height:14px;background-color:var(--text-main);border-radius:50%;border:2px solid var(--primary-color)}.right-panel{width:340px;min-width:340px;border-right:none;border-left:1px solid var(--border)}.settings-group{margin-bottom:25px}.setting-row{display:flex;flex-direction:column;margin-bottom:16px}.setting-row label{font-size:13px;color:var(--text-muted);margin-bottom:6px;font-weight:500}.setting-input{background-color:var(--bg-main);border:1px solid var(--border);color:var(--text-main);padding:10px 12px;border-radius:6px;font-size:14px;width:100%;outline:0;transition:border-color .2s}.setting-input:focus{border-color:var(--primary-color)}select.setting-input{cursor:pointer;appearance:auto}#layer-settings-form{display:none;background-color:var(--bg-main);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-top:16px}.layer-settings-header{font-size:14px;font-weight:600;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border);color:var(--primary-color)}.hidden{display:none!important}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);text-align:center}.empty-state i{font-size:48px;margin-bottom:16px;opacity:.3}.empty-state p{font-size:14px;max-width:200px}.guide-overlay,.toast{position:fixed;display:flex;align-items:center}.toast{bottom:30px;left:50%;background-color:var(--bg-main);color:var(--text-main);border:1px solid var(--border);padding:12px 24px;border-radius:30px;gap:12px;transform:translateX(-50%) translateY(100px);transition:transform .3s cubic-bezier(.175,.885,.32,1.275);z-index:1000;font-size:14px}.toast.show{transform:translateX(-50%) translateY(0)}.toast.success{border:1px solid var(--success)}.guide-tip i,.toast i{color:var(--primary-color)}.toast i{font-size:18px}.toast.success i{color:var(--success)}.guide-overlay{inset:0;background:rgba(0,0,0,.75);z-index:2000;justify-content:center;backdrop-filter:blur(4px);overflow-y:auto;padding:20px}.guide-overlay.hidden{display:none}.guide-modal{background:var(--bg-panel);border:1px solid var(--border);border-radius:12px;width:460px;max-width:90vw;max-height:90vh;overflow-y:auto;padding:32px}.guide-modal h2,.guide-step-body strong{font-size:18px;font-weight:600;margin-bottom:6px;color:var(--text-main)}.guide-modal .guide-subtitle{font-size:13px;color:var(--text-muted);margin-bottom:28px}.guide-steps{display:flex;flex-direction:column;gap:18px;margin-bottom:28px}.guide-step{display:flex;align-items:flex-start;gap:16px}.guide-step-num{width:28px;height:28px;min-width:28px;border-radius:50%;background:var(--primary-light);border:1px solid var(--primary-color);color:var(--primary-color);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}.guide-step-body strong{display:block;font-size:14px;margin-bottom:3px}.guide-step-body span,.guide-tip{font-size:13px;color:var(--text-muted);line-height:1.5}.guide-tip{background:var(--primary-light);border:1px solid rgba(255,96,0,.25);border-radius:8px;padding:12px 14px;margin-bottom:24px}.guide-tip i{margin-right:6px}.guide-modal-footer{display:flex;align-items:center;justify-content:space-between}.guide-dont-show{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);cursor:pointer;user-select:none}.guide-dont-show input{cursor:pointer;accent-color:var(--primary-color)}#guideCloseBtn{background:var(--primary-color);color:#fff;border:0;padding:10px 24px;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;transition:background .2s}#guideCloseBtn:hover{background:var(--primary-hover)}.button-guide{background:0 0!important;border:1px solid var(--border)!important;color:var(--text-muted)!important;width:36px;height:36px;padding:0!important;border-radius:50%!important;display:inline-flex;align-items:center;justify-content:center;font-size:16px!important;gap:0!important}.button-guide:hover{border-color:var(--primary-color)!important;color:var(--primary-color)!important;background:var(--primary-light)!important}.glow-toggle{display:flex;align-items:center;gap:10px;cursor:pointer;user-select:none}.glow-toggle-track{position:relative;width:38px;height:22px;background:var(--border);border-radius:11px;flex-shrink:0;transition:background .2s}.glow-toggle input{display:none}.glow-toggle input:checked+.glow-toggle-track{background:var(--primary-color);box-shadow:0 0 8px rgba(255,96,0,.5)}.glow-toggle-thumb{position:absolute;top:3px;left:3px;width:16px;height:16px;background:#fff;border-radius:50%;transition:left .2s}.glow-toggle input:checked+.glow-toggle-track .glow-toggle-thumb{left:19px}.header-tabs{display:flex;gap:4px;background:var(--bg-main);border:1px solid var(--border);border-radius:var(--radius);padding:3px}.header-tab{background:0 0;border:0;color:var(--text-muted);padding:6px 18px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:7px;transition:all .18s}.header-tab:hover{color:var(--text-main);background:var(--bg-hover)}.header-tab.active{background:var(--primary-color);color:#fff}.player-view.hidden{display:none}.player-layout,.player-view{display:flex;flex:1;overflow:hidden}.player-sidebar{width:260px;min-width:260px;background:var(--bg-panel);border-right:1px solid var(--border);display:flex;flex-direction:column}.player-sidebar-content{flex:1;padding:20px;display:flex;flex-direction:column;gap:16px;overflow-y:auto}.player-drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:32px 16px;text-align:center;cursor:pointer;background:var(--bg-main);display:flex;flex-direction:column;align-items:center;gap:10px;transition:all .2s;font-size:13px;color:var(--text-main)}.player-drop-zone i{font-size:28px;color:var(--primary-color)}.player-drop-zone.dragover,.player-drop-zone:hover{border-color:var(--primary-color);background:var(--primary-light)}.player-info{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.player-info.hidden,.player-loop-label input{display:none}.player-info-row{display:flex;justify-content:space-between;align-items:center;padding:9px 14px;font-size:12px;border-bottom:1px solid var(--border)}.player-info-row:last-child{border-bottom:none}.player-info-row span{color:var(--text-muted)}.player-info-row strong{color:var(--text-main);font-weight:500;max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:right}.player-center{flex:1;display:flex;flex-direction:column;background:var(--bg-main);overflow:hidden}.player-canvas-wrap{flex:1;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}#playerCanvas{max-width:100%;max-height:100%;width:100%;height:100%;overflow:hidden}.player-controls-bar{height:52px;background:var(--bg-panel);border-top:1px solid var(--border);display:flex;align-items:center;gap:12px;padding:0 20px;flex-shrink:0}.player-loop-label{display:flex;align-items:center;cursor:pointer;color:var(--text-muted);font-size:14px;transition:color .2s}.player-loop-label:has(input:checked){color:var(--primary-color)}.glow-toggle-label{font-size:13px;color:var(--text-muted)}