*{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f4f6fb;--panel: #ffffff;--panel-soft: #f8fafd;--border: #e2e8f0;--text: #1e2a3a;--muted: #64748b;--primary: #6366f1;--primary-hover: #4f46e5;--primary-light: #eef2ff;--accent: #10b981;--danger: #ef4444;--warning: #f59e0b;--brand: #6366f1;--sidebar-w: 260px;--radius: 12px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(15,23,42,.08);--shadow-lg: 0 12px 40px rgba(15,23,42,.14);--font: "Inter", "Segoe UI", Arial, sans-serif}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;font-size:14px}button,input,select,textarea{font-family:inherit;font-size:inherit}.app-loading{min-height:100vh;display:grid;place-items:center;gap:12px;text-align:center}.spinner{width:36px;height:36px;border:3px solid #e2e8f0;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-shell{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#eef2ff,#f4f6fb 60%,#ecfdf5);padding:24px}.auth-card{width:100%;max-width:400px;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:40px 36px;box-shadow:var(--shadow-lg)}.auth-logo{display:flex;align-items:center;gap:10px;margin-bottom:6px}.auth-logo-icon{width:40px;height:40px;background:var(--primary);border-radius:10px;display:grid;place-items:center}.auth-logo-icon svg{width:22px;height:22px;fill:#fff}.auth-logo-name{font-size:1.4rem;font-weight:700;color:var(--primary)}.auth-tagline{color:var(--muted);font-size:.875rem;margin-bottom:28px}.auth-card form{display:grid;gap:14px}.auth-field{display:grid;gap:5px}.auth-field label{font-size:.82rem;font-weight:600;color:#374151}.auth-field input{padding:10px 13px;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:#fff;color:var(--text);transition:border-color .15s}.auth-field input:focus{outline:none;border-color:var(--primary)}.auth-submit{margin-top:6px;padding:12px;border:none;border-radius:var(--radius-sm);background:var(--primary);color:#fff;font-weight:600;cursor:pointer;transition:background .15s}.auth-submit:hover:not(:disabled){background:var(--primary-hover)}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-error{color:var(--danger);font-size:.82rem}.app-shell{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh;transition:grid-template-columns .2s ease}.app-shell.sidebar-closed{grid-template-columns:0 1fr}.sidebar{background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;height:100vh;overflow:hidden;transition:transform .2s ease,opacity .2s ease;position:sticky;top:0}.app-shell.sidebar-closed .sidebar{transform:translate(-100%);opacity:0;pointer-events:none}.sidebar-header{padding:20px 16px 12px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}.sidebar-logo{display:flex;align-items:center;gap:8px;text-decoration:none;flex:1}.sidebar-logo-icon{width:32px;height:32px;background:var(--primary);border-radius:8px;display:grid;place-items:center;flex-shrink:0}.sidebar-logo-icon svg{width:18px;height:18px;fill:#fff}.sidebar-logo-name{font-size:1.05rem;font-weight:700;color:var(--primary)}.sidebar-toggle-btn{width:30px;height:30px;border:none;background:transparent;border-radius:8px;cursor:pointer;display:grid;place-items:center;color:var(--muted);flex-shrink:0}.sidebar-toggle-btn:hover{background:var(--bg);color:var(--text)}.sidebar-toggle-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}.sidebar-nav{padding:12px 10px;display:flex;flex-direction:column;gap:2px}.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--muted);font-size:.875rem;font-weight:500;cursor:pointer;text-align:left;width:100%;transition:background .12s,color .12s}.nav-item:hover{background:var(--bg);color:var(--text)}.nav-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.nav-item svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.sidebar-section{padding:0 10px}.sidebar-section-label{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);padding:10px 10px 4px}.new-project-btn{display:flex;align-items:center;gap:8px;margin:8px 10px;padding:9px 12px;border-radius:var(--radius-sm);border:1.5px dashed #c7d2fe;background:var(--primary-light);color:var(--primary);font-size:.875rem;font-weight:600;cursor:pointer;transition:background .12s}.new-project-btn:hover{background:#e0e7ff}.new-project-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:round;flex-shrink:0}.project-list{display:flex;flex-direction:column;gap:2px;padding:0 10px;overflow-y:auto;flex:1}.project-item{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--muted);font-size:.84rem;cursor:pointer;text-align:left;width:100%;transition:background .12s,color .12s}.project-item:hover{background:var(--bg);color:var(--text)}.project-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.project-item-dot{width:8px;height:8px;border-radius:50%;background:#c7d2fe;flex-shrink:0}.project-item.active .project-item-dot{background:var(--primary)}.project-item-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border);display:flex;align-items:center;gap:10px}.sidebar-user-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);display:grid;place-items:center;color:#fff;font-size:.8rem;font-weight:700;flex-shrink:0}.sidebar-user-info{flex:1;min-width:0}.sidebar-user-email{font-size:.75rem;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.logout-btn{width:28px;height:28px;border-radius:7px;border:1px solid var(--border);background:transparent;color:var(--muted);cursor:pointer;display:grid;place-items:center}.logout-btn:hover{background:#fee2e2;color:var(--danger);border-color:#fca5a5}.logout-btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.sidebar-float-toggle{position:fixed;top:14px;left:14px;z-index:50;width:38px;height:38px;border-radius:10px;border:1px solid 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svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round}.topbar-title{font-size:.95rem;font-weight:600;flex:1}.topbar-actions{display:flex;align-items:center;gap:8px}.page{flex:1;overflow-y:auto;padding:32px;min-height:0}.page.page-chat{padding:0;overflow:hidden;display:flex;flex-direction:column}.home-wrap{max-width:680px;margin:0 auto}.home-greeting{font-size:1.6rem;font-weight:700;margin-bottom:6px}.home-sub{color:var(--muted);margin-bottom:36px}.home-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-bottom:36px}.home-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px 18px;cursor:pointer;transition:box-shadow .15s,border-color .15s;display:flex;flex-direction:column;gap:10px}.home-card:hover{box-shadow:var(--shadow);border-color:#c7d2fe}.home-card-icon{width:40px;height:40px;border-radius:10px;display:grid;place-items:center}.home-card-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.home-card-title{font-weight:600;font-size:.9rem}.home-card-desc{font-size:.8rem;color:var(--muted);line-height:1.4}.home-recent-title{font-size:1rem;font-weight:600;margin-bottom:12px}.home-recent-list{display:flex;flex-direction:column;gap:8px}.home-recent-item{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;cursor:pointer;display:flex;align-items:center;gap:12px;transition:border-color .12s}.home-recent-item:hover{border-color:#c7d2fe}.home-recent-icon{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;flex-shrink:0}.home-recent-icon svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.home-recent-info{flex:1;min-width:0}.home-recent-name{font-weight:600;font-size:.875rem}.home-recent-meta{font-size:.76rem;color:var(--muted)}.home-empty{text-align:center;color:var(--muted);padding:40px 0;font-size:.9rem}.project-view{max-width:800px}.project-header{margin-bottom:24px}.project-header h1{font-size:1.4rem;font-weight:700;margin-bottom:4px}.project-header p{color:var(--muted);font-size:.875rem}.task-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.task-card{background:var(--panel);border:1.5px solid var(--border);border-radius:var(--radius);padding:20px 18px;cursor:pointer;transition:box-shadow .15s,border-color 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h2{font-size:1.2rem;font-weight:700;margin-bottom:6px}.modal-sub{color:var(--muted);font-size:.85rem;margin-bottom:22px}.modal-field{display:grid;gap:6px;margin-bottom:14px}.modal-field label{font-size:.82rem;font-weight:600;color:#374151}.modal-field input,.modal-field textarea,.modal-field select{padding:10px 13px;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:#fff;color:var(--text);resize:none;transition:border-color .15s}.modal-field input:focus,.modal-field textarea:focus,.modal-field select:focus{outline:none;border-color:var(--primary)}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:6px}.btn{padding:10px 20px;border-radius:var(--radius-sm);border:none;font-weight:600;cursor:pointer;transition:background 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8px;display:flex;align-items:center;justify-content:space-between}.sessions-panel-header h3{font-size:.82rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}.new-session-btn{width:26px;height:26px;border-radius:7px;border:1px solid var(--border);background:transparent;color:var(--muted);cursor:pointer;display:grid;place-items:center}.new-session-btn:hover{background:var(--primary-light);color:var(--primary);border-color:#c7d2fe}.new-session-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:round}.sessions-list{flex:1;overflow-y:auto;padding:0 8px 12px;display:flex;flex-direction:column;gap:3px}.session-item{padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .12s;position:relative}.session-item:hover{background:var(--bg)}.session-item.active{background:var(--primary-light)}.session-item-title{font-size:.8rem;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}.session-item.active .session-item-title{color:var(--primary);font-weight:600}.session-pin{font-size:.65rem;color:var(--primary);font-weight:700}.session-menu-btn{width:22px;height:22px;border-radius:5px;border:none;background:transparent;color:var(--muted);cursor:pointer;display:grid;place-items:center;opacity:0;transition:opacity .1s}.session-item:hover .session-menu-btn{opacity:1}.session-menu-btn svg{width:13px;height:13px;fill:currentColor}.dropdown{position:absolute;right:0;top:calc(100% + 4px);z-index:30;min-width:140px;background:var(--panel);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow-lg);padding:5px;display:flex;flex-direction:column;gap:2px}.dropdown 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var(--border);background:var(--bg);font-size:.8rem;color:var(--text);cursor:pointer}.messages-list{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px}.message-row{display:flex;align-items:flex-end;gap:10px}.message-row.user{flex-direction:row-reverse}.msg-avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;font-size:.75rem;font-weight:700;margin-bottom:2px}.msg-avatar.bot{background:var(--primary);color:#fff}.msg-avatar.user{background:#e2e8f0;color:var(--text)}.message-bubble{max-width:70%;padding:12px 16px;border-radius:14px;word-wrap:break-word;line-height:1.55;font-size:.9rem;white-space:pre-wrap;position:relative}.message-bubble.bot{background:var(--panel);border:1px solid var(--border);border-bottom-left-radius:4px}.message-bubble.user{background:var(--primary);color:#fff;border-bottom-right-radius:4px}.message-copy-btn{position:absolute;top:6px;right:6px;width:22px;height:22px;border-radius:5px;border:1px solid var(--border);background:var(--panel);color:var(--muted);cursor:pointer;display:grid;place-items:center;opacity:0;transition:opacity .12s}.message-bubble:hover .message-copy-btn{opacity:1}.message-copy-btn svg{width:12px;height:12px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.chat-empty{flex:1;display:grid;place-items:center;color:var(--muted);text-align:center;padding:40px}.chat-empty h3{font-size:1rem;margin-bottom:8px}.chat-empty p{font-size:.85rem}.composer-wrap{padding:14px 20px;border-top:1px solid var(--border);background:var(--panel)}.composer{display:flex;gap:10px;align-items:flex-end}.composer textarea{flex:1;padding:11px 14px;border-radius:10px;border:1.5px solid var(--border);background:#fff;color:var(--text);resize:none;min-height:44px;max-height:180px;line-height:1.5;transition:border-color .15s}.composer 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var(--border);border-radius:var(--radius-sm);padding:14px 16px;margin-bottom:10px;cursor:pointer;transition:border-color .12s}.search-result:hover{border-color:#c7d2fe}.search-result-meta{font-size:.75rem;color:var(--muted);margin-bottom:5px}.search-result-text{font-size:.875rem;color:var(--text)}.search-result-role{display:inline-block;padding:1px 7px;border-radius:5px;font-size:.7rem;font-weight:600;margin-right:6px}.search-result-role.bot{background:var(--primary-light);color:var(--primary)}.search-result-role.user{background:#f0fdf4;color:#059669}.search-empty{text-align:center;color:var(--muted);padding:40px 0}.admin-section{max-width:520px}.admin-section h2{font-size:1.1rem;font-weight:700;margin-bottom:16px}.admin-form{display:grid;gap:12px}.admin-form input{padding:10px 12px;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:#fff;width:100%}.admin-form input:focus{outline:none;border-color:var(--primary)}.clr-purple{background:#f5f3ff;color:#7c3aed}.clr-blue{background:#eff6ff;color:#2563eb}.clr-green{background:#f0fdf4;color:#16a34a}.clr-orange{background:#fff7ed;color:#ea580c}.clr-pink{background:#fdf2f8;color:#db2777}.clr-teal{background:#f0fdfa;color:#0d9488}.clr-red{background:#fef2f2;color:#dc2626}.clr-yellow{background:#fefce8;color:#ca8a04}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:6px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}@media (max-width: 768px){.app-shell{grid-template-columns:1fr}.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:40;transform:translate(-100%);transition:transform .25s ease}.sidebar.mobile-open{transform:translate(0)}.app-shell.sidebar-closed .sidebar{transform:translate(-100%)}.page{padding:20px 16px}.chat-sessions-panel{display:none}.message-bubble{max-width:86%}}