:root{--primary:#2481cc;--primary-light:#40a7e3;--bg:#fff;--bg-secondary:#f4f4f5;--text-primary:#000;--text-secondary:#707579;--border:#dfe1e5;--chat-bg:#e7ebf0;--own-msg:#effdde;--sidebar-width:400px}[data-theme=dark]{--bg:#1c1c1c;--bg-secondary:#2c2c2c;--text-primary:#fff;--text-secondary:#aaa;--border:#333;--chat-bg:#0f0f0f;--own-msg:#2b5278}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{background-color:var(--bg);color:var(--text-primary);width:100vw;height:100vh;margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;overflow:hidden}#root{height:100%}.app-container{width:100vw;height:100vh;display:flex;position:relative}@media (width<=768px){:root{--sidebar-width:100vw}.sidebar{z-index:10;transition:transform .3s;position:absolute;width:100vw!important}.chat-window{z-index:20;transition:transform .3s;position:absolute;top:0;left:0;transform:translate(100%);width:100vw!important}.app-container.chat-active .chat-window{transform:translate(0)}.app-container.chat-active .sidebar{transform:translate(-20%)}.mobile-only-btn{display:block!important}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#0000001a;border-radius:10px}[data-theme=dark] ::-webkit-scrollbar-thumb{background:#ffffff1a}.icon-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:8px;transition:background .2s;display:flex}.icon-btn:hover{background:var(--bg-secondary)}