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solid #161618;border-radius:50%;width:15px;height:15px;position:absolute;top:50%;transform:translate(-50%,-50%);box-shadow:0 1px 4px #00000073}.scrubber-head:active{cursor:grabbing;transform:translate(-50%,-50%)scale(1.15)}.playhead-line{z-index:10;pointer-events:none;background:#ef4444;width:1px;position:absolute;top:0;bottom:0}.playhead-dot{background:#ef4444;border-radius:50%;width:9px;height:9px;position:absolute;top:-6px;left:-4px}.panel{background:var(--bg-surface);border-radius:20px;flex-shrink:0;width:288px;overflow-y:auto;box-shadow:0 12px 40px #00000073}.panel-section{padding:16px}.panel-section+.panel-section{padding-top:6px}.panel-section h3{text-transform:uppercase;letter-spacing:1.2px;color:#6b6b74;margin:0 0 12px;font-size:11px;font-weight:600}.field{margin-bottom:8px}.field label{color:var(--text-tertiary);margin-bottom:4px;font-size:11px;font-weight:500;display:block}.field select,.field input[type=number],.field 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#000c}.bg-custom-row{align-items:center;gap:6px;margin-bottom:10px;display:flex}.bg-current-mini{border-radius:var(--radius-md);cursor:pointer;flex-shrink:0;width:32px;height:32px;position:relative}.bg-current-mini:hover{opacity:.85}.bg-custom-input{background:var(--bg-input);border-radius:var(--radius-md);color:var(--text-primary);border:none;outline:none;flex:1;padding:7px 10px;font-family:inherit;font-size:12px}.bg-custom-input:focus{box-shadow:0 0 0 2px var(--accent-subtle)}.bg-group{margin-bottom:18px}.bg-group-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.bg-group-label{color:var(--text-primary);letter-spacing:-.1px;font-size:14px;font-weight:600}.bg-expand-btn{color:var(--text-tertiary);cursor:pointer;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color 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#ffffffd9}.bg-swatch-img{image-rendering:auto}.bg-upload-btn{border:1px dashed var(--border-strong);border-radius:var(--radius-lg);border-radius:var(--radius-md);width:100%;color:var(--text-tertiary);cursor:pointer;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:0 0;justify-content:center;align-items:center;gap:6px;padding:9px;font-family:inherit;font-size:12px;font-weight:500;display:flex}.bg-upload-btn:hover{background:var(--accent-subtle);border-color:var(--accent);color:var(--text-primary);border-style:solid}.duration-field{align-items:center;gap:6px;display:flex}.duration-field input{flex:1}.duration-field span{color:var(--text-muted);font-size:12px;font-weight:500}.btn-fit{border-radius:var(--radius-sm);background:var(--bg-input);color:var(--text-secondary);cursor:pointer;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);white-space:nowrap;border:none;padding:5px 10px;font-family:inherit;font-size:11px;font-weight:500}.btn-fit:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-primary{color:#0c0c0e;cursor:pointer;width:100%;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:#fafafa;border:none;border-radius:999px;margin-bottom:8px;padding:9px;font-family:inherit;font-size:13px;font-weight:600;box-shadow:0 2px 10px #0000004d}.btn-primary:hover{background:#e9e9ec}.image-list{flex-direction:column;gap:2px;display:flex}.image-item{border-radius:var(--radius-lg);cursor:pointer;transition:background var(--transition);align-items:center;gap:10px;padding:8px 10px;display:flex}.image-item:hover{background:#ffffff0d}.image-item.selected{background:#ffffff17;box-shadow:inset 0 0 0 1px #ffffff1a}.image-item.selected .image-name{color:var(--text-primary)}.image-item.drag-over{box-shadow:inset 0 2px 0 0 var(--accent)}.image-item.dragging{opacity:.35}.image-thumb{object-fit:cover;border-radius:10px;flex-shrink:0;width:38px;height:38px;box-shadow:inset 0 0 0 1px #ffffff0f}.image-name{white-space:nowrap;text-overflow:ellipsis;color:var(--text-secondary);flex:1;font-size:13px;font-weight:450;overflow:hidden}.btn-remove{width:22px;height:22px;color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;opacity:0;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;padding:0;display:flex}.image-item:hover .btn-remove{opacity:1;color:var(--text-tertiary)}.btn-remove:hover{background:#ef444426;color:#f87171!important}.sequence-info{flex-direction:column;min-width:0;display:flex}.sequence-meta{color:var(--text-muted);font-size:10px;font-weight:450}.drop-card{background:var(--bg-elevated);border-radius:var(--radius-xl);cursor:pointer;width:100%;transition:background var(--transition);border:none;flex-direction:column;align-items:center;gap:4px;padding:32px 16px 26px;font-family:inherit;display:flex}.drop-card:hover{background:#232327}.drop-card-tile{width:56px;height:56px;color:var(--text-secondary);transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:#ffffff17;border-radius:16px;justify-content:center;align-items:center;margin-bottom:10px;display:flex}.drop-card:hover .drop-card-tile{color:var(--text-primary);background:#ffffff24}.drop-card-title{color:var(--text-secondary);font-size:13px;font-weight:500}.drop-card-sub{color:var(--text-muted);font-size:11px}.hint{color:var(--text-muted);text-align:center;border:1px dashed var(--border-strong);border-radius:var(--radius-lg);background:#ffffff04;margin:4px 2px;padding:28px 12px;font-size:12px;line-height:1.6}.hint-small{color:var(--text-muted);margin-bottom:8px;font-size:11px}.section-header-row{justify-content:space-between;align-items:center;display:flex}.section-header-row h3{margin-bottom:0}.checkbox-label.compact{gap:0;font-size:0}.checkbox-field{margin-bottom:8px}.checkbox-label{color:var(--text-secondary);cursor:pointer;align-items:center;gap:8px;font-size:13px;font-weight:450;display:flex}.checkbox-label input[type=checkbox]{appearance:none;cursor:pointer;width:36px;height:20px;transition:background var(--transition);background:#ffffff1a;border-radius:10px;flex-shrink:0;margin:0;padding:0;position:relative}.checkbox-label input[type=checkbox]:after{content:"";width:14px;height:14px;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:#fff6;border-radius:50%;position:absolute;top:3px;left:3px}.checkbox-label input[type=checkbox]:checked{background:#fafafa}.checkbox-label input[type=checkbox]:checked:after{background:#161618;left:19px}.align-row{flex-wrap:wrap;gap:6px;display:flex}.align-group{background:var(--bg-input);border-radius:var(--radius-sm);gap:1px;padding:2px;display:flex}.align-btn{width:26px;height:26px;color:var(--text-tertiary);cursor:pointer;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:0;display:flex}.align-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.align-btn svg{width:14px;height:14px}.frame-style-grid{grid-template-columns:repeat(3,1fr);gap:4px;display:grid}.frame-style-btn{border-radius:var(--radius-md);background:var(--bg-input);color:var(--text-tertiary);cursor:pointer;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);border:none;flex-direction:column;align-items:center;gap:5px;padding:8px 4px 6px;font-family:inherit;font-size:10px;font-weight:500;display:flex}.frame-style-btn:hover{background:var(--bg-hover);color:var(--text-secondary)}.frame-style-btn.active{background:var(--accent-subtle);color:var(--text-primary);box-shadow:inset 0 0 0 1.5px #863bff73}.frame-style-preview{background:#c8c8cc;border-radius:6px;width:48px;height:36px;position:relative;overflow:hidden}.fs-inner{border-radius:inherit;position:absolute;inset:0}.fs-none .fs-inner{background:linear-gradient(135deg,#e8e8ec 60%,#d0d0d4)}.fs-border{background:#fff}.fs-border .fs-inner{background:linear-gradient(135deg,#e8e8ec 60%,#d0d0d4);inset:3px}.fs-glass .fs-inner,.fs-glass-light .fs-inner,.fs-glass-dark .fs-inner{background:linear-gradient(135deg,#e8e8ec 60%,#d0d0d4);box-shadow:inset 0 1px 6px #fff6,inset 0 -1px 4px #00000014}.border-color-picker{margin-top:10px}.border-color-picker label{color:var(--text-tertiary);margin-bottom:6px;font-size:11px;font-weight:500;display:block}.frame-overlay{pointer-events:none;border-radius:inherit;z-index:1;position:absolute;inset:0}.frame-glass .frame-overlay,.frame-glass-light .frame-overlay,.frame-glass-dark .frame-overlay{box-shadow:inset 0 2px 12px #fff3,inset 0 -2px 8px #0000000f}.slider-field{margin-bottom:10px}.effect-label-row{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.effect-label-row label{margin-bottom:0}.effect-label-row .mini-toggle{cursor:pointer;align-items:center;gap:7px;margin:0;display:flex}.mini-toggle span{color:var(--text-muted);font-size:10.5px;font-weight:500;line-height:1}.mini-toggle input[type=checkbox]{appearance:none;cursor:pointer;width:28px;height:16px;transition:background var(--transition);background:#ffffff1a;border-radius:999px;flex-shrink:0;margin:0;padding:0;position:relative}.mini-toggle input[type=checkbox]:after{content:"";width:11px;height:11px;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:#ffffff73;border-radius:50%;position:absolute;top:2.5px;left:2.5px}.mini-toggle input[type=checkbox]:checked{background:#fafafa}.mini-toggle input[type=checkbox]:checked:after{background:#161618;left:14.5px}.slider-field label{color:var(--text-tertiary);margin-bottom:6px;font-size:11px;font-weight:500;display:block}.slider-field-row{align-items:center;gap:10px;display:flex}.slider-field-row .align-slider-root{flex:1;min-width:0}.border-radius-number{background:var(--bg-input);width:52px;height:30px;color:var(--text-primary);text-align:center;border:none;border-radius:999px;outline:none;padding:0 6px;font-family:inherit;font-size:12px}.border-radius-number:focus{box-shadow:0 0 0 2px var(--accent-subtle)}.btn-video-duration{border-radius:var(--radius-md);width:100%;color:var(--accent);cursor:pointer;transition:background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition), border-color var(--transition);background:0 0;border:1px dashed #ffffff1f;margin-top:4px;padding:6px 10px;font-family:inherit;font-size:11px;font-weight:500}.btn-video-duration:hover{background:var(--accent-subtle);border-color:var(--accent)}.export-overlay{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:1000;animation:overlay-in .2s var(--ease-out);background:#000000bf;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}@keyframes overlay-in{0%{opacity:0}to{opacity:1}}.export-modal{background:var(--bg-surface);border:1px solid var(--border-strong);text-align:center;border-radius:20px;min-width:340px;padding:40px 48px;box-shadow:0 32px 80px #0009}.export-modal-icon{color:var(--accent);margin-bottom:16px}.export-modal h2{color:var(--text-primary);margin:0 0 6px;font-size:18px;font-weight:600}.export-modal-status{color:var(--text-tertiary);margin:0 0 20px;font-size:13px;font-weight:450}.export-progress-track{background:#ffffff14;border-radius:3px;width:100%;height:6px;margin-bottom:10px;overflow:hidden}.export-progress-fill{background:#fafafa;border-radius:3px;height:100%;transition:width .15s}.export-progress-pct{color:var(--text-muted);font-variant-numeric:tabular-nums;font-size:12px;font-weight:500}@keyframes pop-in{0%{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}.easing-popover,.bg-picker-popover{animation:pop-in .15s var(--ease-out);transform-origin:top}.btn-play:active,.btn-stop:active,.btn-icon:active,.btn-add-small:active,.btn-primary:active,.btn-fit:active,.bg-expand-tile:active,.bg-upload-btn:active,.drop-card:active,.frame-style-btn:active,.align-btn:active,.easing-option:active,.bg-expand-btn:active{transform:scale(.97)}.btn-export:active,.btn-export-caret:active{opacity:.75}@media (hover:none),(pointer:coarse){.bg-swatch:hover{transform:none}}@media (prefers-reduced-motion:reduce){.bg-swatch:hover,.btn-play:active,.btn-stop:active,.btn-icon:active,.btn-add-small:active,.btn-primary:active,.btn-fit:active,.bg-expand-tile:active,.bg-upload-btn:active,.drop-card:active,.frame-style-btn:active,.align-btn:active,.easing-option:active,.bg-expand-btn:active,.align-slider-thumb:hover,.align-slider-thumb:active,.scrubber-head:active{transform:none}.export-dropdown,.easing-popover,.bg-picker-popover,.export-overlay{animation-duration:1ms}}