*{margin:0;padding:0;box-sizing:border-box}:root{--bg: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #242424;--border: #333;--text: #e0e0e0;--text-muted: #888;--primary: #6366f1;--primary-hover: #4f46e5;--danger: #ef4444;--sidebar-width: 280px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}.auth-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;padding:40px;width:100%;max-width:400px}.auth-title{font-size:28px;font-weight:700;text-align:center;margin-bottom:4px}.auth-subtitle{text-align:center;color:var(--text-muted);margin-bottom:24px}.auth-form{display:flex;flex-direction:column;gap:12px}.auth-input{padding:10px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg-tertiary);color:var(--text);font-size:14px;outline:none}.auth-input:focus{border-color:var(--primary)}.auth-input:disabled{opacity:.6}.auth-error{background:#2d1515;border:1px solid #5c2020;color:#f87171;padding:10px;border-radius:8px;font-size:13px}.auth-divider{display:flex;align-items:center;gap:12px;margin:20px 0;color:var(--text-muted);font-size:13px}.auth-divider:before,.auth-divider:after{content:"";flex:1;border-top:1px solid var(--border)}.btn-primary{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{padding:8px 16px;background:var(--bg-tertiary);color:var(--text);border:1px solid var(--border);border-radius:8px;font-size:13px;cursor:pointer}.btn-secondary:hover{background:var(--border)}.btn-xcloud{width:100%;padding:10px 20px;background:var(--bg-tertiary);color:var(--text);border:1px solid var(--border);border-radius:8px;font-size:14px;cursor:pointer}.btn-xcloud:hover{background:var(--border)}.chat-page{display:flex;height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:width .2s;overflow:hidden}.sidebar.closed{width:0;border:none}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}.sidebar-brand{font-size:18px;font-weight:700;color:var(--primary)}.btn-icon{background:none;border:none;color:var(--text-muted);font-size:18px;cursor:pointer;padding:4px 8px}.btn-icon:hover{color:var(--text)}.session-list{flex:1;overflow-y:auto;padding:8px}.btn-new-session{width:100%;padding:10px;background:var(--bg-tertiary);border:1px dashed var(--border);border-radius:8px;color:var(--text-muted);font-size:13px;cursor:pointer;margin-bottom:8px}.btn-new-session:hover{border-color:var(--primary);color:var(--primary)}.session-item{display:flex;flex-direction:column;width:100%;padding:10px 12px;background:none;border:none;border-radius:8px;color:var(--text);text-align:left;cursor:pointer;margin-bottom:2px}.session-item:hover{background:var(--bg-tertiary)}.session-item.active{background:var(--bg-tertiary);border-left:3px solid var(--primary)}.session-title{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-date{font-size:11px;color:var(--text-muted)}.sidebar-footer{padding:12px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:4px}.sidebar-link{background:none;border:none;color:var(--text-muted);font-size:13px;text-align:left;padding:6px 8px;cursor:pointer;border-radius:6px}.sidebar-link:hover{background:var(--bg-tertiary);color:var(--text)}.sidebar-user{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-muted);padding-top:8px;border-top:1px solid var(--border)}.btn-logout{background:none;border:none;color:var(--text-muted);font-size:12px;cursor:pointer}.btn-logout:hover{color:var(--danger)}.chat-main{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-header{display:flex;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border)}.connection-status{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-muted)}.status-dot{width:8px;height:8px;border-radius:50%}.status-dot.connected{background:#22c55e}.status-dot.disconnected{background:var(--danger)}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-muted)}.chat-empty h2{font-size:32px;color:var(--text)}.chat-view{flex:1;overflow-y:auto;padding:16px}.messages-container{max-width:1200px;margin:0 auto}.response-group{margin-bottom:24px}.user-message{margin-bottom:12px}.user-message-content{display:inline-block;background:var(--primary);color:#fff;padding:10px 16px;border-radius:12px 12px 2px;max-width:80%;white-space:pre-wrap}.ai-panels{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}@media(max-width:768px){.ai-panels{grid-template-columns:1fr}}.ai-panel{background:var(--bg-secondary);border:1px solid var(--border);border-radius:10px;overflow:hidden}.ai-panel-header{display:flex;align-items:center;gap:8px;padding:8px 12px;border-bottom:2px solid;font-size:12px}.ai-panel-name{font-weight:700}.ai-panel-model{color:var(--text-muted)}.ai-panel-tokens{margin-left:auto;color:var(--text-muted);font-size:11px}.ai-panel-content{padding:12px;font-size:14px;line-height:1.7;max-height:500px;overflow-y:auto}.ai-panel-content p{margin-bottom:8px}.ai-panel-content pre{background:var(--bg);padding:10px;border-radius:6px;overflow-x:auto;font-size:13px;margin:8px 0}.ai-panel-content code{font-family:SF Mono,Fira Code,monospace}.ai-panel-error{color:var(--danger);font-size:13px}.cursor-blink{animation:blink 1s step-end infinite;color:var(--primary)}@keyframes blink{50%{opacity:0}}.input-bar{padding:12px 16px;border-top:1px solid var(--border);background:var(--bg-secondary)}.model-selector{display:flex;gap:6px;margin-bottom:8px}.interim-banner{margin-bottom:8px;padding:6px 10px;border:1px solid #f0c674;background:#fff8e1;color:#6b4f00;border-radius:6px;font-size:12px}.model-toggle{padding:4px 12px;border:1px solid var(--border);border-radius:16px;background:none;color:var(--text-muted);font-size:12px;cursor:pointer}.model-toggle.active{background:var(--primary);border-color:var(--primary);color:#fff}.input-row{display:flex;gap:8px}.input-textarea{flex:1;padding:10px 14px;border:1px solid var(--border);border-radius:10px;background:var(--bg-tertiary);color:var(--text);font-size:14px;font-family:inherit;resize:none;outline:none}.input-textarea:focus{border-color:var(--primary)}.btn-send{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}.btn-send:hover{background:var(--primary-hover)}.btn-send:disabled{opacity:.4;cursor:not-allowed}.settings-page{max-width:900px;margin:0 auto;padding:24px}.settings-header{display:flex;align-items:center;gap:16px;margin-bottom:24px}.settings-header h1{font-size:24px}.btn-back{background:none;border:none;color:var(--text-muted);font-size:14px;cursor:pointer}.btn-back:hover{color:var(--text)}.settings-section{background:var(--bg-secondary);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:16px}.settings-section h2{font-size:16px;margin-bottom:12px}.settings-info{display:flex;flex-direction:column;gap:6px;font-size:14px}.settings-message{margin-top:8px;padding:8px 12px;background:var(--bg-tertiary);border-radius:6px;font-size:13px;word-break:break-all}.invite-form{display:flex;gap:8px;margin-bottom:12px}.invite-form .auth-input{flex:1}.user-table{width:100%;border-collapse:collapse;font-size:13px}.user-table th{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border);color:var(--text-muted);font-weight:600}.user-table td{padding:8px 12px;border-bottom:1px solid var(--border)}.btn-danger-sm{padding:4px 10px;background:none;border:1px solid var(--danger);color:var(--danger);border-radius:6px;font-size:12px;cursor:pointer}.btn-danger-sm:hover{background:var(--danger);color:#fff}.tab-bar{display:flex;align-items:center;gap:4px;margin-bottom:16px;border-bottom:1px solid var(--border);padding-bottom:8px}.tab{padding:8px 16px;background:none;border:none;color:var(--text-muted);font-size:14px;cursor:pointer;border-radius:6px}.tab.active{background:var(--bg-tertiary);color:var(--text)}.tab-actions{margin-left:auto;display:flex;gap:8px;align-items:center}.tab-actions select{padding:6px 10px;background:var(--bg-tertiary);color:var(--text);border:1px solid var(--border);border-radius:6px;font-size:13px}.search-bar{display:flex;gap:8px;margin-bottom:16px}.search-bar .auth-input{flex:1}.search-result-item{background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:8px}.search-result-meta{display:flex;gap:12px;font-size:12px;color:var(--text-muted);margin-bottom:6px}.search-result-content{font-size:13px;line-height:1.6}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh}.loading-spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}