:root{--primary:#10a37f;--bg-color:#343541;--bg-color-alt:#444654;--text-color:#ececf1;--border-color:#4d4d4f;--error-color:#ef4444;--font-family:"Inter", -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-color);flex-direction:column;height:100vh;display:flex}.loading-screen{justify-content:center;align-items:center;height:100vh;display:flex}.spinner{border:3px solid #ffffff1a;border-top-color:var(--primary);vertical-align:middle;border-radius:50%;width:24px;height:24px;animation:1s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.login-container{justify-content:center;align-items:center;height:100vh;display:flex}.login-box{background:var(--bg-color-alt);text-align:center;border-radius:8px;padding:40px;box-shadow:0 4px 6px #0000004d}.login-box h1{margin-bottom:10px}.login-box p{color:#c5c5d2;margin-bottom:24px}.google-btn-wrapper{justify-content:center;display:flex}.chat-container{flex-direction:column;height:100vh;display:flex}.chat-header{background:var(--bg-color-alt);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:16px 24px;display:flex}.icon-btn{color:var(--text-color);cursor:pointer;background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:8px;display:flex}.icon-btn:hover{background:#ffffff1a}.chat-main{flex-direction:column;flex:1;gap:16px;padding:24px;display:flex;overflow-y:auto}.message{border-radius:6px;width:100%;max-width:800px;margin:0 auto;padding:16px}.message.assistant{background:var(--bg-color-alt)}.tool-indicator{color:#c5c5d2;background:#0003;border-radius:4px;align-items:center;gap:8px;margin-top:12px;padding:8px 12px;font-size:.9em;display:inline-flex}.error-indicator{color:var(--error-color);margin-top:12px;font-weight:500}.blinking-cursor{animation:1s step-end infinite blink}@keyframes blink{50%{opacity:0}}.chat-input-area{background:var(--bg-color);padding:24px}.input-form{background:var(--bg-color-alt);border:1px solid var(--border-color);border-radius:8px;max-width:800px;margin:0 auto;display:flex;position:relative;overflow:hidden}.input-form input{color:var(--text-color);background:0 0;border:none;flex:1;padding:16px;font-family:inherit;font-size:16px}.input-form input:focus{outline:none}.input-form input:disabled{opacity:.6}.send-btn,.stop-btn{color:var(--text-color);cursor:pointer;background:0 0;border:none;align-items:center;padding:0 16px;display:flex}.send-btn:disabled{opacity:.3;cursor:not-allowed}.send-btn:hover:not(:disabled){color:var(--primary)}.stop-btn{color:var(--error-color);border-left:1px solid var(--border-color);font-weight:600}[data-theme=light]{--primary:#10a37f;--bg-color:#f7f7f8;--bg-color-alt:#fff;--text-color:#1a1a2e;--border-color:#e5e5e5;--error-color:#ef4444}.app-layout{height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-color-alt);border-right:1px solid var(--border-color);flex-direction:column;width:260px;min-width:260px;display:flex;overflow:hidden}.sidebar-top{border-bottom:1px solid var(--border-color);padding:12px}.new-chat-btn{border:1px solid var(--border-color);width:100%;color:var(--text-color);cursor:pointer;background:0 0;border-radius:6px;align-items:center;gap:8px;padding:10px 12px;font-family:inherit;font-size:14px;transition:background .15s;display:flex}.new-chat-btn:hover{background:#8080801a}.session-list{flex:1;padding:8px;overflow-y:auto}.session-item{cursor:pointer;color:var(--text-color);border-radius:6px;justify-content:space-between;align-items:center;gap:8px;padding:10px 12px;font-size:14px;transition:background .15s;display:flex}.session-item:hover{background:#8080801a}.session-item:hover .session-actions{opacity:1}.session-item.active{background:#80808026}.session-title{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.session-actions{opacity:0;flex-shrink:0;gap:2px;transition:opacity .15s;display:flex}.icon-btn.sm{border-radius:4px;padding:4px}.rename-input{background:var(--bg-color);border:1px solid var(--primary);color:var(--text-color);border-radius:4px;outline:none;flex:1;min-width:0;padding:2px 6px;font-family:inherit;font-size:14px}.sidebar-footer{border-top:1px solid var(--border-color);align-items:center;gap:8px;padding:12px;display:flex}.user-email{color:#888;text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:12px;overflow:hidden}.message.assistant p{margin-bottom:.75em;line-height:1.6}.message.assistant p:last-child{margin-bottom:0}.message.assistant pre{border-radius:6px;margin:.75em 0;overflow:auto}.message.assistant code:not(pre code){background:#80808033;border-radius:3px;padding:2px 5px;font-size:.9em}.message.assistant ul,.message.assistant ol{margin:.5em 0;padding-left:1.5em}.message.assistant li{margin:.25em 0}