*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#1a1a1a;color:#fff;overflow:hidden;height:100vh}.flex-container{min-height:0;min-width:0}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#2d2d2d}::-webkit-scrollbar-thumb{background:#555;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#777}.timeline-content::-webkit-scrollbar{height:6px}.timeline-content::-webkit-scrollbar-track{background:#252525}.timeline-content::-webkit-scrollbar-thumb{background:#007acc;border-radius:3px}app-video-editor{height:100vh;display:flex;flex-direction:column;overflow:hidden}.flex-scroll-container{flex:1;min-height:0;overflow:hidden;display:flex;flex-direction:column}app-tool-panel,app-file-upload,app-video-preview,app-timeline{display:flex;flex-direction:column;min-height:0}