:root{--brand: #4f46e5;--brand-2: #7c3aed;--ink: #0f172a;--muted: #64748b}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink)}.auth-bg{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(1200px 600px at 20% -10%,#6366f1 0%,transparent 55%),radial-gradient(1000px 500px at 100% 0%,#a855f7 0%,transparent 50%),linear-gradient(135deg,#1e1b4b,#312e81,#4338ca)}.auth-card{width:100%;max-width:400px;background:#fffffffa;border-radius:24px;padding:36px 32px;box-shadow:0 30px 60px -20px #0f172a80;position:relative}.auth-langs{position:absolute;top:16px;right:16px;display:flex;gap:4px}.auth-lang{border:none;background:transparent;color:var(--muted);font-size:12px;font-weight:600;padding:4px 8px;border-radius:8px;cursor:pointer}.auth-lang.active{background:#eef2ff;color:var(--brand)}.auth-logo{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:flex;align-items:center;justify-content:center;font-size:32px;margin-bottom:18px;box-shadow:0 12px 24px -8px #4f46e599}.auth-title{font-size:28px;font-weight:800;margin:0;letter-spacing:-.5px}.auth-tagline{color:var(--muted);font-size:14px;line-height:1.5;margin:8px 0 24px}.auth-label{font-size:13px;font-weight:600;color:var(--muted);margin-bottom:6px;display:block}.auth-input{width:100%;padding:13px 14px;font-size:16px;border:1.5px solid #e2e8f0;border-radius:12px;outline:none;transition:border-color .15s,box-shadow .15s}.auth-input:focus{border-color:var(--brand);box-shadow:0 0 0 4px #4f46e51f}.auth-btn{width:100%;padding:13px 16px;font-size:16px;font-weight:700;color:#fff;border:none;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));cursor:pointer;margin-top:14px;transition:transform .08s,box-shadow .15s,opacity .15s;box-shadow:0 10px 20px -8px #4f46e5b3}.auth-btn:hover{transform:translateY(-1px)}.auth-btn:active{transform:translateY(0)}.auth-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.auth-link{background:none;border:none;color:var(--brand);font-weight:600;cursor:pointer;margin-top:14px;font-size:14px}.auth-hint{color:var(--muted);font-size:13px;margin-top:14px}.auth-sentto{font-size:14px;color:var(--ink);margin:0 0 14px}.auth-sentto b{color:var(--brand)}.auth-error{color:#dc2626;font-size:14px;margin-top:14px}.auth-features{display:flex;flex-direction:column;gap:10px;margin-top:26px;padding-top:22px;border-top:1px solid #eef2f7}.auth-feature{display:flex;align-items:center;gap:10px;font-size:14px;color:#334155}.auth-feature .ic{width:28px;height:28px;border-radius:8px;background:#eef2ff;display:flex;align-items:center;justify-content:center;font-size:15px}.auth-footer{text-align:center;color:#ffffffb3;font-size:12px;margin-top:18px}.app{display:flex;height:100%;background:#f8fafc}.sidebar{width:340px;background:#fff;border-right:1px solid #e9eef5;display:flex;flex-direction:column}.sb-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid #eef2f7}.sb-title{font-size:20px;font-weight:800;letter-spacing:-.3px}.sb-search{margin:12px 16px;padding:10px 14px;border:1.5px solid #e2e8f0;border-radius:12px;font-size:14px;outline:none}.sb-search:focus{border-color:var(--brand);box-shadow:0 0 0 4px #4f46e51a}.found{border-bottom:1px solid #eef2f7;max-height:220px;overflow-y:auto}.found-item{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;cursor:pointer}.found-item:hover{background:#f8fafc}.chip-btn{padding:5px 10px;border:none;border-radius:8px;background:var(--brand);color:#fff;font-size:12px;font-weight:600;cursor:pointer}.chat-list{flex:1;overflow-y:auto}.chat-item{display:flex;gap:12px;padding:12px 16px;cursor:pointer;align-items:center;border-radius:12px;margin:2px 8px;transition:background .12s}.chat-item:hover{background:#f1f5f9}.chat-item.active{background:#eef2ff}.avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0}.chat-meta{flex:1;min-width:0}.row-between{display:flex;align-items:center;justify-content:space-between}.chat-name{font-weight:700;font-size:15px}.chat-preview{color:var(--muted);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:2px}.dot-online{width:9px;height:9px;border-radius:50%;background:#22c55e;flex-shrink:0}.muted{color:var(--muted);font-size:14px;padding:16px}.link{background:none;border:none;color:var(--brand);font-weight:600;cursor:pointer;font-size:14px}.conv{flex:1;display:flex;flex-direction:column}.conv-head{display:flex;flex-direction:column;padding:14px 20px;background:#fff;border-bottom:1px solid #eef2f7}.conv-peer{font-weight:700;font-size:16px}.conv-status{color:var(--muted);font-size:13px;margin-top:2px}.conv-status.online{color:#16a34a}.messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:8px}.bubble-row{display:flex}.bubble-row.mine{justify-content:flex-end}.bubble{max-width:68%;padding:9px 13px;border-radius:16px;font-size:15px;line-height:1.4;word-break:break-word;box-shadow:0 1px 1px #0f172a0f}.bubble.theirs{background:#fff;color:var(--ink);border-bottom-left-radius:4px}.bubble.mine{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-bottom-right-radius:4px}.bubble .meta{font-size:10px;opacity:.75;margin-top:3px;text-align:right}.composer{display:flex;gap:10px;padding:14px 18px;background:#fff;border-top:1px solid #eef2f7}.composer-input{flex:1;padding:12px 16px;border:1.5px solid #e2e8f0;border-radius:22px;font-size:15px;outline:none}.composer-input:focus{border-color:var(--brand);box-shadow:0 0 0 4px #4f46e51a}.send-btn{padding:0 22px;border:none;border-radius:22px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:700;cursor:pointer}.send-btn:hover{opacity:.92}.conv-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#94a3b8;gap:10px}.conv-empty .big{font-size:48px}.conv-back{display:none;background:none;border:none;color:var(--brand);font-size:22px;font-weight:700;cursor:pointer;padding:0 8px 0 0;line-height:1}@media(max-width:1024px){.sidebar{width:280px}}@media(max-width:768px){.sidebar{width:100%}.conv,.app.chat-open .sidebar{display:none}.app.chat-open .conv{display:flex}.conv-back{display:inline-block}.conv-head{flex-direction:row;align-items:center;gap:6px}.conv-head .conv-titles{display:flex;flex-direction:column}.bubble{max-width:82%}.auth-card{padding:28px 20px}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;display:flex;align-items:center;justify-content:center;padding:16px;z-index:50}.modal-card{width:100%;max-width:420px;background:#fff;border-radius:20px;padding:28px 24px;box-shadow:0 30px 60px -20px #0f172a80}.modal-title{margin:0 0 16px;font-size:22px;font-weight:800}.modal-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;margin-top:22px}.sb-actions{display:flex;align-items:center;gap:12px}.avatar-edit{display:flex;align-items:center;gap:14px;margin-bottom:16px}.avatar-preview{width:64px;height:64px;border-radius:50%;object-fit:cover;background:#eef2ff}.avatar-preview--empty{display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:700;color:var(--brand)}.avatar img,.avatar-img{width:100%;height:100%;border-radius:50%;object-fit:cover}.auth-version{text-align:center;color:#94a3b8;font-size:12px;margin-top:14px}.sb-version{color:#94a3b8;font-size:11px;padding:8px 16px;border-top:1px solid #eef2f7;text-align:center}.upd-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a8c;display:flex;align-items:center;justify-content:center;z-index:100;padding:16px}.upd-card{width:100%;max-width:380px;background:#fff;border-radius:18px;padding:24px;box-shadow:0 30px 60px -20px #0f172a80}.upd-title{margin:0 0 8px;font-size:19px;font-weight:800}.upd-text{color:#334155;margin:0 0 16px}.upd-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;margin-top:18px}.upd-btn{padding:10px 20px;border:none;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:700;cursor:pointer}.upd-bar{width:100%;height:12px;background:#eef2f7;border-radius:6px;overflow:hidden}.upd-bar-fill{height:100%;background:linear-gradient(135deg,var(--brand),var(--brand-2));transition:width .15s ease}.upd-pct{text-align:center;font-weight:700;color:var(--brand);margin:10px 0 0}.upd-hint{color:#94a3b8;font-size:13px;margin-top:8px;text-align:center}.upd-error{color:#dc2626;white-space:pre-wrap;font-size:13px}