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var(--border);background:var(--bg-secondary)}.left-pane-wrapper,.center-pane-wrapper,.right-pane-wrapper{display:contents}@media(max-width:768px){body{overflow:auto}.topbar{padding:0 12px;height:48px}.topbar-logo{font-size:13px;gap:8px}.topbar-logo-icon{width:28px;height:28px}.topbar-logo-icon svg{width:15px;height:15px}.topbar-action-btn{padding:5px 10px;font-size:12px}.topbar-actions{gap:6px}.mobile-back-btn{display:flex}.main{height:calc(100vh - 48px);position:relative;overflow:hidden}.left-pane-wrapper,.center-pane-wrapper,.right-pane-wrapper{display:none;position:absolute;top:0;right:0;bottom:0;left:0;z-index:1}.left-pane-wrapper.mobile-active,.center-pane-wrapper.mobile-active,.right-pane-wrapper.mobile-active{display:flex}.left-pane{width:100%;min-width:100%;border-right:none}.left-header{padding:14px 12px 12px}.left-header-top{margin-bottom:10px}.center-pane{width:100%}.chat-header{padding:12px 16px}.chat-header-text h3{font-size:13px}.chat-messages{padding:16px 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