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span{color:var(--text-secondary);font-size:var(--font-md)}.history-list{display:flex;flex-direction:column;gap:var(--sp-3)}.history-item{display:flex;gap:var(--sp-3);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--sp-2-5);cursor:grab;transition:all var(--transition-normal)}.history-item:hover{border-color:var(--accent)}.history-item:active{cursor:grabbing}.history-preview{position:relative;width:120px;height:68px;flex-shrink:0;border-radius:var(--radius-md);overflow:hidden;background:var(--bg-canvas)}.history-preview 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var(--transition-normal)}.play-overlay:hover{opacity:1;background:var(--accent)}.history-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:var(--sp-1-5)}.history-prompt{font-size:var(--font-md);color:var(--text-primary);line-height:var(--leading-tight);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.history-meta{display:flex;gap:var(--sp-2);align-items:center;font-size:var(--font-xs)}.history-type{background:var(--bg-secondary);padding:var(--sp-0-5) var(--sp-1-5);border-radius:var(--radius-sm);color:var(--text-secondary);font-weight:var(--font-semibold)}.history-date{color:var(--text-secondary)}.history-added{color:var(--success);font-weight:var(--font-medium)}.history-actions{display:flex;gap:var(--sp-1-5);margin-top:auto}.btn-add-timeline{padding:var(--sp-1) var(--sp-2);background:var(--accent);border:none;border-radius:var(--radius-sm);color:var(--text-on-accent);font-size:var(--font-xs);font-weight:var(--font-medium);cursor:pointer;transition:background var(--transition-normal)}.btn-add-timeline:hover{background:var(--accent-hover)}.btn-remove-history{width:20px;height:20px;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:var(--font-xs);cursor:pointer;display:flex;align-items:center;justify-content:center}.btn-remove-history:hover{background:var(--danger-dim);border-color:var(--danger);color:var(--danger)}.youtube-panel{display:flex;flex-direction:column;height:100%;background:var(--bg-secondary);color:var(--text-primary)}.youtube-header{padding:var(--sp-3);border-bottom:1px solid var(--border-color);display:flex;flex-direction:column;gap:var(--sp-2);flex-shrink:0}.youtube-search-row{display:flex;gap:var(--sp-2)}.youtube-search-input{flex:1;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--text-primary);padding:var(--sp-2) var(--sp-3);font-size:var(--font-lg);font-family:inherit}.youtube-search-input:focus{outline:none;border-color:var(--accent)}.youtube-search-input::placeholder{color:var(--text-secondary)}.youtube-search-btn{padding:var(--sp-2) var(--sp-4);background:red;border:none;border-radius:var(--radius-lg);color:var(--text-on-accent);font-size:var(--font-md);font-weight:var(--font-semibold);cursor:pointer;transition:background var(--transition-normal);flex-shrink:0}.youtube-search-btn:hover:not(:disabled){background:#c00}.youtube-search-btn:disabled{opacity:.5;cursor:not-allowed}.youtube-options{display:flex;align-items:center;gap:var(--sp-2)}.youtube-options .provider-select{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);padding:var(--sp-1) var(--sp-2);font-size:var(--font-sm);cursor:pointer}.youtube-options .provider-select:hover{border-color:var(--accent)}.btn-settings-small{padding:var(--sp-1) var(--sp-2);background:var(--accent);border:none;border-radius:var(--radius-md);color:var(--text-on-accent);font-size:var(--font-xs);cursor:pointer;transition:background var(--transition-normal)}.btn-settings-small:hover{background:var(--accent-hover)}.youtube-hint{font-size:var(--font-xs);color:var(--text-secondary);padding:var(--sp-1-5) 0 0;text-align:center}.api-status{font-size:var(--font-xs);color:var(--text-secondary);padding:3px var(--sp-2);background:var(--bg-tertiary);border-radius:var(--radius-md)}.api-status.api-active{color:var(--success);background:var(--success-subtle)}.api-status.api-warning{color:var(--warning-light);background:var(--warning-dim)}.youtube-hint-warning{color:var(--warning-light)!important}.auto-download-toggle{display:flex;align-items:center;gap:var(--sp-1-5);font-size:var(--font-xs);color:var(--text-secondary);cursor:pointer;margin-left:auto;padding:3px var(--sp-2);background:var(--bg-tertiary);border-radius:var(--radius-md);transition:all var(--transition-normal)}.auto-download-toggle:hover{background:var(--bg-primary)}.auto-download-toggle input{width:14px;height:14px;cursor:pointer;accent-color:#ff0000}.auto-download-toggle:has(input:checked){color:var(--success);background:var(--success-subtle)}.youtube-error{margin:0 var(--sp-3);padding:var(--sp-2) var(--sp-3);background:var(--danger-subtle);border:1px solid var(--danger-border);border-radius:var(--radius-lg);color:var(--danger-light);font-size:var(--font-md);display:flex;align-items:center;gap:var(--sp-2)}.youtube-error .error-icon{width:var(--sp-4);height:var(--sp-4);background:var(--danger);color:var(--text-on-accent);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:var(--font-xs);font-weight:var(--font-bold);flex-shrink:0}.youtube-results{flex:1;overflow-y:auto;padding:var(--sp-3)}.youtube-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-3);padding:var(--sp-10)}.loading-spinner{width:var(--sp-6);height:var(--sp-6);border:2px solid var(--border-color);border-top-color:red;border-radius:var(--radius-full);animation:spin .8s linear infinite}.youtube-loading span{color:var(--text-secondary);font-size:var(--font-md)}.youtube-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--sp-10);text-align:center}.youtube-empty .youtube-icon{font-size:var(--font-2xl);font-weight:var(--font-bold);color:red;background:#ff00001a;padding:var(--sp-2) var(--sp-4);border-radius:var(--radius-lg);margin-bottom:var(--sp-3)}.youtube-empty p{color:var(--text-primary);margin:0 0 var(--sp-1);font-size:var(--font-xl)}.youtube-empty span{color:var(--text-secondary);font-size:var(--font-md)}.youtube-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:var(--sp-3)}.youtube-video-card{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-xl);overflow:hidden;cursor:pointer;transition:all var(--transition-normal)}.youtube-video-card:hover{border-color:red;transform:translateY(-2px)}.youtube-video-card.dragging{opacity:.5;border-color:var(--accent);border-style:dashed}.youtube-video-card.downloading{pointer-events:none}.video-thumbnail{position:relative;aspect-ratio:16/9;background:var(--bg-canvas);overflow:hidden}.video-thumbnail img{width:100%;height:100%;object-fit:cover;transition:transform var(--transition-normal)}.youtube-video-card:hover .video-thumbnail img{transform:scale(1.05)}.video-duration{position:absolute;bottom:var(--sp-1);right:var(--sp-1);background:#000000d9;color:var(--text-on-accent);font-size:var(--font-xs);font-weight:var(--font-medium);padding:var(--sp-0-5) var(--sp-1);border-radius:3px}.video-info-overlay{position:absolute;bottom:0;left:0;right:0;padding:var(--sp-6) var(--sp-2) var(--sp-2);background:linear-gradient(transparent,#000000d9);display:flex;flex-direction:column;gap:var(--sp-0-5)}.video-info-overlay .video-title{font-size:var(--font-sm);font-weight:var(--font-medium);color:var(--text-on-accent);margin:0;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;text-shadow:0 1px 2px rgba(0,0,0,.5)}.video-info-overlay .video-channel{font-size:var(--font-2xs);color:#ffffffb3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.video-actions{position:absolute;top:var(--sp-1);left:var(--sp-1);right:var(--sp-1);display:flex;gap:var(--sp-1);opacity:0;transition:opacity var(--transition-normal)}.youtube-video-card:hover .video-actions{opacity:1}.btn-download{background:#22c55ee6;border:none;border-radius:var(--radius-md);color:var(--text-on-accent);font-size:var(--font-md);font-weight:var(--font-bold);width:var(--sp-6);height:var(--sp-6);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--transition-normal)}.btn-download:hover:not(:disabled){background:var(--success)}.btn-download:disabled{opacity:.6;cursor:not-allowed}.btn-add-timeline{background:#ff0000e6;border:none;border-radius:var(--radius-md);color:var(--text-on-accent);font-size:var(--font-xl);font-weight:var(--font-bold);width:var(--sp-6);height:var(--sp-6);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background var(--transition-normal)}.btn-add-timeline:hover{background:#c00}.btn-copy-url{background:#000000b3;border:none;border-radius:var(--radius-md);color:var(--text-on-accent);font-size:var(--font-2xs);padding:var(--sp-1) var(--sp-1-5);cursor:pointer;margin-left:auto;transition:background var(--transition-normal)}.btn-copy-url:hover{background:var(--accent)}.download-overlay{position:absolute;inset:0;background:#000c;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-2)}.download-overlay span{color:var(--text-on-accent);font-size:var(--font-xs)}.download-spinner{width:var(--sp-6);height:var(--sp-6);border:2px solid rgba(255,255,255,.3);border-top-color:var(--success);border-radius:var(--radius-full);animation:spin .8s linear infinite}.drag-hint{position:absolute;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity var(--transition-normal)}.youtube-video-card:active .drag-hint{opacity:1}.drag-hint span{background:var(--accent);color:var(--text-on-accent);padding:var(--sp-1-5) var(--sp-3);border-radius:var(--radius-md);font-size:var(--font-sm);font-weight:var(--font-medium)}.download-indicator{position:absolute;inset:0;background:#000c;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-2)}.download-indicator .progress-bar{width:80%;height:var(--sp-1);background:#fff3;border-radius:var(--radius-sm);overflow:hidden}.download-indicator .progress-fill{height:100%;background:red;transition:width var(--transition-slow)}.download-indicator span{color:var(--text-on-accent);font-size:var(--font-xs)}.format-dialog-backdrop{position:fixed;inset:0;background:var(--bg-overlay);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);backdrop-filter:blur(4px)}.format-dialog{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-2xl);width:320px;max-width:90vw;max-height:80vh;overflow:hidden;box-shadow:var(--shadow-dialog)}.format-dialog-header{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-3) var(--sp-4);border-bottom:1px solid var(--border-color)}.format-dialog-header h3{margin:0;font-size:var(--font-xl);font-weight:var(--font-semibold);color:var(--text-primary)}.format-dialog-close{background:none;border:none;color:var(--text-secondary);font-size:20px;cursor:pointer;padding:0;line-height:1;transition:color var(--transition-normal)}.format-dialog-close:hover{color:var(--text-primary)}.format-dialog-video{display:flex;gap:var(--sp-3);padding:var(--sp-3) var(--sp-4);background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.format-dialog-video img{width:80px;height:45px;object-fit:cover;border-radius:var(--radius-md);flex-shrink:0}.format-dialog-info{display:flex;flex-direction:column;gap:var(--sp-1);min-width:0}.format-dialog-title{font-size:var(--font-md);font-weight:var(--font-medium);color:var(--text-primary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.3}.format-dialog-uploader{font-size:var(--font-xs);color:var(--text-secondary)}.format-dialog-options{padding:var(--sp-2);display:flex;flex-direction:column;gap:var(--sp-1);max-height:300px;overflow-y:auto}.format-option{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-2-5) var(--sp-3);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-normal)}.format-option:hover{background:var(--bg-primary);border-color:red}.format-label{font-size:var(--font-lg);font-weight:var(--font-medium);color:var(--text-primary)}.format-details{display:flex;gap:var(--sp-1-5)}.format-codec{font-size:var(--font-2xs);padding:var(--sp-0-5) var(--sp-1-5);background:#ffffff1a;border-radius:var(--radius-md);color:var(--text-secondary);font-family:var(--font-mono)}.format-dialog-cancel{width:calc(100% - var(--sp-4));margin:var(--sp-2);padding:var(--sp-2-5);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-xl);color:var(--text-secondary);font-size:var(--font-md);cursor:pointer;transition:all var(--transition-normal)}.format-dialog-cancel:hover{background:var(--bg-primary);color:var(--text-primary)}.transitions-panel{display:flex;flex-direction:column;height:100%;background:#1a1a1a;color:#e5e5e5}.transitions-panel-header{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid #333;background:#222}.transitions-panel-title{font-size:12px;font-weight:600;color:#888;text-transform:uppercase;letter-spacing:.5px}.transitions-duration-control{display:flex;align-items:center;gap:4px;background:#333;border-radius:4px;padding:2px 6px 2px 2px}.transitions-duration-input{width:48px;padding:4px 6px;font-size:12px;font-family:inherit;background:transparent;border:none;color:#fff;text-align:right}.transitions-duration-input:focus{outline:none}.transitions-duration-input::-webkit-inner-spin-button,.transitions-duration-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.transitions-duration-unit{font-size:11px;color:#666}.transitions-list{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px}.transition-item{display:flex;align-items:center;gap:12px;padding:8px 10px;background:#2a2a2a;border:1px solid #333;border-radius:6px;cursor:grab;transition:all .15s ease}.transition-item:hover{background:#333;border-color:#444}.transition-item:active{cursor:grabbing;transform:scale(.98)}.transition-item-preview{width:64px;height:32px;border-radius:4px;overflow:hidden;background:#1a1a1a;flex-shrink:0}.transition-preview-svg{width:100%;height:100%}.transition-item-name{font-size:12px;font-weight:500;color:#ccc}.transitions-empty{display:flex;align-items:center;justify-content:center;height:100px;color:#555;font-size:12px}.transitions-panel-footer{display:flex;align-items:center;gap:6px;padding:10px 12px;border-top:1px solid #333;background:#1f1f1f;color:#555;font-size:11px}.transitions-panel-footer svg{flex-shrink:0;opacity:.6}.settings-container{position:fixed;inset:0;pointer-events:none;z-index:10000}.settings-dialog{position:fixed;pointer-events:auto;background:var(--bg-primary, #1a1a1a);border:1px solid var(--border-color);border-radius:6px;width:640px;max-width:95vw;height:480px;max-height:90vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 20px 60px #00000080}.settings-dialog.dragging{cursor:grabbing;user-select:none}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);flex-shrink:0;cursor:grab;user-select:none}.settings-dialog.dragging .settings-header{cursor:grabbing}.settings-header 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