.auth-page{--auth-bg: #f6f8fa;--auth-card-bg: #ffffff;--auth-border: #d0d7de;--auth-text: #1f2328;--auth-muted: #656d76;--auth-input-bg: #f6f8fa;--auth-btn: #2da44e;--auth-btn-hover: #2c974b;--auth-btn-disabled-bg: #94d3a2;--auth-btn-disabled-text: #fff;--auth-error-bg: rgba(248, 81, 73, .08);--auth-error-border: rgba(248, 81, 73, .4);--auth-error-text: #cf222e;--auth-link: #0969da;--auth-focus: #0969da}@media(prefers-color-scheme:dark){.auth-page{--auth-bg: #0d1117;--auth-card-bg: #161b22;--auth-border: #30363d;--auth-text: #e6edf3;--auth-muted: #8b949e;--auth-input-bg: #0d1117;--auth-btn: #238636;--auth-btn-hover: #2ea043;--auth-btn-disabled-bg: #21262d;--auth-btn-disabled-text: #484f58;--auth-error-bg: rgba(248, 81, 73, .1);--auth-error-border: rgba(248, 81, 73, .4);--auth-error-text: #f85149;--auth-link: #58a6ff;--auth-focus: #58a6ff}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--auth-bg);padding:1rem}.auth-form{background:var(--auth-card-bg);border:1px solid var(--auth-border);border-radius:12px;padding:2.5rem;width:100%;max-width:380px;box-shadow:0 4px 16px #0000001a}.auth-form h2{color:var(--auth-text);font-size:1.5rem;margin:0 0 .5rem;text-align:center}.auth-form p{color:var(--auth-muted);font-size:.85rem;text-align:center;margin:0 0 1.5rem}.auth-form input{display:block;width:100%;padding:.75rem 1rem;margin-bottom:.75rem;background:var(--auth-input-bg);border:1px solid var(--auth-border);border-radius:8px;color:var(--auth-text);font-size:.9rem;outline:none;transition:border-color .2s;box-sizing:border-box}.auth-form input:focus{border-color:var(--auth-focus)}.auth-form input::placeholder{color:var(--auth-muted)}.auth-form button{display:block;width:100%;padding:.75rem;margin-top:.5rem;background:var(--auth-btn);border:none;border-radius:8px;color:#fff;font-size:.9rem;font-weight:600;cursor:pointer;transition:background .2s}.auth-form button:hover{background:var(--auth-btn-hover)}.auth-form button:disabled{background:var(--auth-btn-disabled-bg);color:var(--auth-btn-disabled-text);cursor:not-allowed}.auth-error{background:var(--auth-error-bg);border:1px solid var(--auth-error-border);border-radius:8px;color:var(--auth-error-text);padding:.6rem .75rem;font-size:.8rem;margin-bottom:1rem;text-align:center}.auth-link{color:var(--auth-muted);font-size:.8rem;text-align:center;margin-top:1.25rem!important}.auth-link a{color:var(--auth-link);text-decoration:none}.auth-link a:hover{text-decoration:underline}.auth-btn{display:inline-block;padding:.6rem 1.5rem;background:var(--auth-btn);border-radius:8px;color:#fff;text-decoration:none;font-weight:600;font-size:.85rem;margin-top:1rem}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:#1a202c;background:#f7fafc}.app{display:flex;height:100vh}.sidebar{width:260px;background:#0b1220;color:#e2e8f0;display:flex;flex-direction:column;padding:1rem .75rem;gap:.75rem}.new-btn{background:#632d91;color:#fff;border:none;border-radius:8px;padding:.6rem .75rem;font-size:.9rem;cursor:pointer}.new-btn:hover{background:#7b39b0}.conv-list{list-style:none;overflow-y:auto}.conv-list .empty{color:#718096;font-size:.85rem;padding:.5rem}.conv{width:100%;text-align:left;background:transparent;color:#cbd5e0;border:none;border-radius:6px;padding:.55rem .6rem;font-size:.9rem;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv:hover{background:#ffffff0f}.conv.active{background:#7b39b059;color:#fff}.main{flex:1;display:flex;flex-direction:column;min-width:0}.thread{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:.75rem}.empty-thread,.typing{color:#718096}.msg{display:flex}.msg.user{justify-content:flex-end}.msg.assistant{justify-content:flex-start}.bubble{max-width:min(75ch,80%);padding:.7rem .95rem;border-radius:14px;line-height:1.45;white-space:pre-wrap;word-break:break-word}.msg.user .bubble{background:#632d91;color:#fff;border-bottom-right-radius:4px}.msg.assistant .bubble{background:#fff;border:1px solid #e2e8f0;border-bottom-left-radius:4px}.error-bar{background:#b91c1c14;color:#b91c1c;padding:.6rem 1rem;font-size:.88rem}.composer{display:flex;gap:.5rem;padding:1rem;border-top:1px solid #e2e8f0;background:#fff}.composer input{flex:1;padding:.7rem .9rem;border:1px solid #cbd5e0;border-radius:10px;font-size:.95rem}.composer input:focus{outline:2px solid #7b39b0;border-color:#7b39b0}.composer button{background:#632d91;color:#fff;border:none;border-radius:10px;padding:0 1.2rem;font-size:.95rem;cursor:pointer}.composer button:disabled{background:#a0aec0;cursor:not-allowed}@media(max-width:640px){.app{flex-direction:column}.sidebar{width:100%;flex-direction:row;align-items:center;padding:.5rem;overflow-x:auto}.conv-list{display:flex;gap:.4rem}.new-btn{white-space:nowrap}}