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.2s}.lc-load-btn:hover{background:#ffb84d}.resize-handle{cursor:col-resize;background:var(--border);flex-shrink:0;width:4px;transition:background .15s;position:relative}.resize-handle:after{content:"";position:absolute;inset:0 -3px}.resize-handle:hover{background:var(--accent)}.btn-lc-preview{color:var(--accent);cursor:pointer;white-space:nowrap;background:#58a6ff1a;border:1px solid #58a6ff4d;border-radius:6px;padding:6px 14px;font-size:13px;font-weight:600;transition:all .2s}.btn-lc-preview:hover{background:#58a6ff33}.problem-pane{background:var(--surface);border-left:none;flex-direction:column;flex-shrink:0;width:400px;display:flex;overflow:hidden}.problem-pane-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:flex-start;gap:8px;padding:12px 14px;display:flex}.problem-pane-title{flex:1;align-items:center;gap:8px;min-width:0;display:flex}.problem-pane-title h4{text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:14px;overflow:hidden}.problem-pane-tags{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:4px;padding:8px 14px;display:flex}.problem-pane-content{color:var(--text);flex:1;padding:14px;font-size:13px;line-height:1.6;overflow-y:auto}.problem-pane-content img{border-radius:6px;max-width:100%;height:auto;margin:8px 0}.problem-pane-content pre{background:var(--bg);border-radius:6px;padding:8px 12px;font-size:12px;overflow-x:auto}.problem-pane-content code{background:var(--bg);border-radius:3px;padding:1px 4px;font-size:12px}.draw-canvas{z-index:10;pointer-events:none;position:absolute;inset:0}.draw-canvas.active{pointer-events:auto;cursor:crosshair}.draw-toolbar{border-top:1px solid var(--border);background:var(--bg);justify-content:center;align-items:center;gap:6px;padding:6px 8px;display:flex}.draw-color-btn{cursor:pointer;border:2px solid #0000;border-radius:50%;width:20px;height:20px;transition:all .15s}.draw-color-btn.selected{border-color:#fff;transform:scale(1.2)}.draw-color-btn:hover{transform:scale(1.15)}.draw-clear-btn{border:1px solid var(--border);color:var(--muted);cursor:pointer;background:0 0;border-radius:4px;margin-left:4px;padding:2px 8px;font-size:12px}.draw-clear-btn:hover{color:var(--text);background:var(--border)}.video-resize-handle{cursor:nwse-resize;z-index:10;width:16px;height:16px;position:absolute;top:0;left:0}.video-resize-handle:before{content:"";border-top:2px solid var(--muted);border-left:2px solid var(--muted);opacity:.5;width:8px;height:8px;transition:opacity .2s;position:absolute;top:3px;left:3px}.video-resize-handle:hover:before{opacity:1;border-color:var(--accent)}.mode-toggle{background:var(--bg);border:1px solid var(--border);border-radius:6px;display:flex;overflow:hidden}.mode-toggle-btn{color:var(--muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;padding:5px 12px;font-size:12px;font-weight:600;transition:all 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.15s}.wb-action-btn:hover:not(:disabled){background:var(--border)}.wb-action-btn:disabled{opacity:.3;cursor:not-allowed}.wb-action-btn.danger:hover{color:#f85149;background:#f8514933}.wb-zoom-group{margin-left:auto}.wb-zoom-label{color:var(--muted);text-align:center;min-width:36px;font-size:11px}.wb-canvas{background:var(--bg);touch-action:none;flex:1;width:100%;display:block}.stopwatch{background:var(--surface);border:1px solid var(--border);white-space:nowrap;border-radius:8px;align-items:center;gap:6px;padding:4px 10px;font-size:13px;display:flex}.stopwatch-alarming{border-color:#f85149;animation:.5s ease-in-out infinite alternate alarm-pulse;box-shadow:0 0 12px #f8514966}@keyframes alarm-pulse{0%{background:var(--surface)}to{background:#f8514933}}.stopwatch-input{background:var(--bg);border:1px solid var(--border);width:50px;color:var(--text);text-align:center;border-radius:4px;padding:2px 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0!important}.stopwatch-dismiss{color:#fff!important;background:#f85149!important}.video-settings{border-top:1px solid var(--border);background:var(--bg);flex-direction:column;gap:8px;padding:10px 12px;display:flex}.video-settings-header{color:var(--text);justify-content:space-between;align-items:center;font-size:12px;font-weight:600;display:flex}.video-settings-close{color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:14px}.video-settings-close:hover{background:var(--border);color:var(--text)}.video-settings-row{flex-direction:column;gap:3px;display:flex}.video-settings-row label{color:var(--muted);font-size:11px;font-weight:600}.video-settings-row select{border:1px solid var(--border);background:var(--surface);width:100%;color:var(--text);cursor:pointer;border-radius:5px;outline:none;padding:5px 8px;font-size:12px}.video-settings-row select:focus{border-color:var(--accent)}.mic-tester{align-items:center;gap:8px;margin-top:4px;display:flex}.mic-tester-bar-bg{background:var(--border);border-radius:3px;flex:1;height:6px;overflow:hidden}.mic-tester-bar{border-radius:3px;height:100%;transition:width .1s ease-out}.mic-tester-label{color:var(--muted);white-space:nowrap;flex-shrink:0;font-size:10px}