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var(--line);background:var(--surface);width:38px;height:38px;color:var(--ink);border-radius:50%;place-items:center;padding:0;display:grid;position:absolute;top:20px;right:16px}.ai-sidebar-backdrop{z-index:var(--z-sidebar-backdrop);background:#00000057;border:0;padding:0;display:block;position:fixed;top:0;right:0;bottom:0;left:0}.ai-mobile-menu-button{border:1px solid var(--line);background:var(--surface);width:42px;height:42px;color:var(--ink);border-radius:13px;flex:none;place-items:center;padding:0;display:grid}.topbar,.teacher-topbar{justify-content:flex-start;gap:12px}.assistant-app>.topbar,.admin-app>.topbar,.teacher-app>.teacher-topbar,.interview-app>.teacher-topbar{z-index:var(--z-chrome);pointer-events:none;background:0 0;width:auto;height:auto;min-height:0;margin:0;padding:0;position:fixed;top:16px;left:16px}.assistant-app>.topbar .ai-mobile-menu-button,.admin-app>.topbar .ai-mobile-menu-button,.teacher-app>.teacher-topbar .ai-mobile-menu-button,.interview-app>.teacher-topbar 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