:root{--color-canvas: #070a0f;--color-surface-rail: #0a0f17;--color-surface-sidebar: #0e141f;--color-surface-chat: #080d14;--color-surface-default: #121a27;--color-surface-raised: #192436;--color-surface-hover: #1f2d42;--color-surface-overlay: rgba(7, 10, 15, .82);--color-brand-primary: #10b981;--color-brand-hover: #059669;--color-brand-active: #047857;--color-brand-subtle: rgba(16, 185, 129, .14);--color-brand-glow: rgba(16, 185, 129, .26);--color-bubble-out: #0c3528;--color-bubble-out-border: rgba(16, 185, 129, .3);--color-bubble-in: #131c2b;--color-bubble-in-border: rgba(255, 255, 255, .08);--color-success: #10b981;--color-success-subtle: rgba(16, 185, 129, .15);--color-warning: #f59e0b;--color-warning-subtle: rgba(245, 158, 11, .15);--color-danger: #ef4444;--color-danger-subtle: rgba(239, 68, 68, .15);--color-info: #06b6d4;--color-info-subtle: rgba(6, 182, 212, .15);--color-text-primary: #f8fafc;--color-text-secondary: #94a3b8;--color-text-muted: #64748b;--color-text-inverted: #03120d;--color-border-subtle: rgba(255, 255, 255, .07);--color-border-default: rgba(255, 255, 255, .13);--color-border-hover: rgba(255, 255, 255, .22);--color-border-focus: #10b981;--font-display: "Space Grotesk", system-ui, -apple-system, sans-serif;--font-body: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;--text-2xl: clamp(1.5rem, 2vw + .5rem, 2rem);--text-xl: 1.25rem;--text-lg: 1.0625rem;--text-base: .9375rem;--text-sm: .84375rem;--text-xs: .75rem;--text-2xs: .6875rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--radius-xs: 6px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 22px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .35);--shadow-md: 0 8px 20px -4px rgba(0, 0, 0, .5);--shadow-lg: 0 18px 36px -8px rgba(0, 0, 0, .65);--shadow-glow: 0 0 24px -4px var(--color-brand-glow);--shadow-inner: inset 0 1px 0 rgba(255, 255, 255, .08);--shadow-inner-emerald: inset 0 1px 0 rgba(16, 185, 129, .2);--ease-spring: cubic-bezier(.16, 1, .3, 1);--ease-bounce: cubic-bezier(.34, 1.56, .64, 1);--ease-smooth: cubic-bezier(.4, 0, .2, 1);--transition-instant: .1s var(--ease-spring);--transition-fast: .16s var(--ease-spring);--transition-normal: .24s var(--ease-spring);--transition-slow: .38s var(--ease-spring);--z-base: 1;--z-sticky: 40;--z-dropdown: 80;--z-modal-backdrop: 200;--z-modal: 210;--z-lightbox: 300;--z-toast: 400}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%;overflow:hidden;background-color:var(--color-canvas);color:var(--color-text-primary);font-family:var(--font-body);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:focus-visible{outline:2px solid var(--color-border-focus);outline-offset:2px}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#94a3b82e;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#94a3b852}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);font-family:var(--font-body);font-size:var(--text-sm);font-weight:600;min-height:40px;padding:0 var(--space-4);border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:transform var(--transition-fast),background-color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),filter var(--transition-fast);user-select:none;white-space:nowrap}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-sm{min-height:32px;padding:0 var(--space-3);font-size:var(--text-xs)}.btn-lg{min-height:46px;padding:0 var(--space-6);font-size:var(--text-base)}.btn-icon{width:40px;height:40px;min-height:40px;padding:0;border-radius:var(--radius-sm)}.btn-primary{background:var(--color-brand-primary);color:var(--color-text-inverted);box-shadow:var(--shadow-inner),0 4px 14px #10b98140}.btn-primary:hover:not(:disabled){background:var(--color-brand-hover);color:#fff;box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--color-surface-raised);color:var(--color-text-primary);border-color:var(--color-border-subtle)}.btn-secondary:hover:not(:disabled){background:var(--color-surface-hover);border-color:var(--color-border-hover)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:hover:not(:disabled){background:#ffffff0f;color:var(--color-text-primary)}.btn-danger{background:var(--color-danger-subtle);color:#fca5a5;border-color:#ef444459}.btn-danger:hover:not(:disabled){background:var(--color-danger);color:#fff}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:var(--text-xs);font-weight:600;color:var(--color-text-secondary);letter-spacing:.02em}.input{width:100%;min-height:42px;padding:0 var(--space-3);border-radius:var(--radius-sm);border:1px solid var(--color-border-default);background:#080d14bf;color:var(--color-text-primary);font-family:var(--font-body);font-size:var(--text-sm);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input::placeholder{color:var(--color-text-muted)}.input:focus{outline:none;border-color:var(--color-brand-primary);box-shadow:0 0 0 3px var(--color-brand-subtle)}.input-mono{font-family:var(--font-mono);letter-spacing:.04em}.badge{display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 8px;border-radius:var(--radius-full);font-size:var(--text-2xs);font-weight:600;letter-spacing:.03em}.badge-emerald{background:var(--color-brand-subtle);color:#34d399;border:1px solid rgba(16,185,129,.28)}.badge-amber{background:var(--color-warning-subtle);color:#fbbf24;border:1px solid rgba(245,158,11,.3)}.badge-danger{background:var(--color-danger-subtle);color:#f87171;border:1px solid rgba(239,68,68,.3)}.badge-info{background:var(--color-info-subtle);color:#22d3ee;border:1px solid rgba(6,182,212,.3)}.badge-neutral{background:#94a3b81f;color:var(--color-text-secondary);border:1px solid var(--color-border-subtle)}.auth-shell{display:grid;grid-template-columns:1.1fr .9fr;height:100%;width:100%;background:radial-gradient(circle at 15% 20%,rgba(16,185,129,.09),transparent 48%),radial-gradient(circle at 85% 80%,rgba(6,182,212,.06),transparent 45%),var(--color-canvas)}.auth-hero{display:flex;flex-direction:column;justify-content:space-between;padding:var(--space-10);border-right:1px solid var(--color-border-subtle);background:linear-gradient(180deg,#0e141f8c,#070a0fd9);overflow-y:auto}.brand-lockup{display:flex;align-items:center;gap:var(--space-4)}.brand-logo-img{height:64px;width:auto;max-width:180px;object-fit:contain;filter:drop-shadow(0 4px 16px rgba(16,185,129,.25));transition:transform var(--transition-base)}.brand-logo-img:hover{transform:scale(1.03)}.brand-tagline-wrap{display:flex;flex-direction:column;gap:4px}.brand-tagline-pill{display:inline-block;font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.08em;color:var(--color-brand-primary);background:#10b9811f;border:1px solid rgba(16,185,129,.3);padding:3px 8px;border-radius:9999px;width:fit-content}.brand-subtext{font-size:12.5px;font-weight:600;color:var(--color-text-secondary);letter-spacing:-.01em}.brand-mark{width:42px;height:42px;border-radius:11px;background:linear-gradient(145deg,#10b981,#047857);color:#03120d;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-glow)}.brand-name{font-family:var(--font-display);font-size:1.35rem;font-weight:700;letter-spacing:-.03em}.auth-headline{font-family:var(--font-display);font-size:clamp(2rem,3.2vw,3rem);font-weight:700;line-height:1.12;letter-spacing:-.03em;margin-bottom:var(--space-4)}.auth-subcopy{color:var(--color-text-secondary);font-size:var(--text-base);max-width:520px;line-height:1.65}.security-pillars{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-3);margin-top:var(--space-8)}.pillar-card{padding:var(--space-4);border-radius:var(--radius-md);background:#121a27a6;border:1px solid var(--color-border-subtle);box-shadow:var(--shadow-inner)}.pillar-title{font-weight:600;font-size:var(--text-sm);margin-top:var(--space-2);margin-bottom:4px}.pillar-desc{font-size:var(--text-xs);color:var(--color-text-secondary);line-height:1.5}.auth-panel-wrap{display:flex;align-items:center;justify-content:center;padding:var(--space-6);overflow-y:auto}.auth-card{width:100%;max-width:430px;padding:var(--space-8);border-radius:var(--radius-lg);background:var(--color-surface-default);border:1px solid var(--color-border-default);box-shadow:var(--shadow-lg),var(--shadow-inner)}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;background:var(--color-canvas);border-radius:var(--radius-sm);border:1px solid var(--color-border-subtle);margin-bottom:var(--space-6)}.auth-tab{min-height:36px;border:none;border-radius:6px;background:transparent;color:var(--color-text-secondary);font-family:var(--font-body);font-size:var(--text-xs);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.auth-tab.active{background:var(--color-surface-raised);color:var(--color-text-primary);box-shadow:var(--shadow-sm)}.app-root{display:flex;flex-direction:column;height:100%;width:100%}.desktop-titlebar{height:38px;min-height:38px;background:#080b10;border-bottom:1px solid rgba(255,255,255,.07);display:flex;align-items:center;justify-content:space-between;padding:0 14px;-webkit-app-region:drag;font-size:var(--text-xs);color:var(--color-text-secondary);user-select:none;z-index:100;box-shadow:0 1px 3px #00000059}.desktop-titlebar-win{padding-right:140px}.desktop-titlebar-left{display:flex;align-items:center;gap:8px;-webkit-app-region:drag}.desktop-titlebar-logo{width:18px;height:18px;border-radius:4px;object-fit:contain;filter:drop-shadow(0 0 6px rgba(16,185,129,.35))}.desktop-titlebar-brand{font-family:var(--font-display);font-weight:700;font-size:13px;color:var(--color-text-primary);letter-spacing:-.01em}.desktop-titlebar-badge{font-family:var(--font-mono);font-size:10px;background:#ffffff0f;border:1px solid rgba(255,255,255,.08);padding:1px 6px;border-radius:4px;color:var(--color-text-muted)}.desktop-titlebar-status-dot{width:6px;height:6px;border-radius:50%;display:inline-block;box-shadow:0 0 6px currentColor;transition:background-color .3s ease}.desktop-titlebar-center{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--color-text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:480px;pointer-events:none}.desktop-titlebar-active-title{color:var(--color-text-primary);font-weight:600;display:flex;align-items:center}.desktop-titlebar-subtle-title{font-size:11.5px;color:var(--color-text-muted);letter-spacing:.02em}.desktop-titlebar-overlay-spacer{width:10px;flex-shrink:0;pointer-events:none}.desktop-titlebar-actions{display:flex;align-items:center;gap:4px;-webkit-app-region:no-drag}.workspace-grid{flex:1;min-height:0;display:grid;grid-template-columns:68px 340px 1fr;width:100%}.workspace-grid.admin-mode{grid-template-columns:68px 1fr}.nav-rail{background:var(--color-surface-rail);border-right:1px solid var(--color-border-subtle);display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:var(--space-4) 0;z-index:20}.rail-group{display:flex;flex-direction:column;align-items:center;gap:var(--space-2)}.rail-btn{position:relative;width:44px;height:44px;border-radius:var(--radius-md);border:1px solid transparent;background:transparent;color:var(--color-text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.rail-btn:hover{background:#ffffff0f;color:var(--color-text-primary)}.rail-brand-mark{width:42px;height:42px;margin-bottom:12px;background:#10b98114;border:1px solid rgba(16,185,129,.28);border-radius:13px;padding:5px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px #10b98126;transition:transform var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast);cursor:pointer}.rail-brand-mark:hover{transform:scale(1.05);border-color:#10b98173;box-shadow:0 6px 18px #10b98140}.rail-brand-img{width:100%;height:100%;object-fit:contain}.rail-btn.active{background:var(--color-brand-subtle);color:var(--color-brand-primary);border-color:#10b98147}.rail-btn.active:before{content:"";position:absolute;left:-12px;width:4px;height:24px;border-radius:0 4px 4px 0;background:var(--color-brand-primary);box-shadow:0 0 8px #10b98199}.rail-unread-dot{position:absolute;top:4px;right:4px;min-width:18px;height:18px;padding:0 5px;border-radius:var(--radius-full);background:var(--color-brand-primary);color:var(--color-text-inverted);font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center}.conv-sidebar{background:var(--color-surface-sidebar);border-right:1px solid var(--color-border-subtle);display:flex;flex-direction:column;min-height:0}.conv-sidebar-header{padding:var(--space-4);border-bottom:1px solid var(--color-border-subtle);display:flex;flex-direction:column;gap:var(--space-3)}.filter-pills{display:flex;gap:6px;overflow-x:auto;padding-bottom:2px}.filter-pill{padding:5px 11px;border-radius:var(--radius-full);border:1px solid var(--color-border-subtle);background:#ffffff08;color:var(--color-text-secondary);font-size:var(--text-xs);font-weight:600;cursor:pointer;white-space:nowrap;transition:all var(--transition-fast)}.filter-pill:hover{color:var(--color-text-primary);border-color:var(--color-border-hover)}.filter-pill.active{background:var(--color-brand-primary);color:var(--color-text-inverted);border-color:var(--color-brand-primary)}.conv-list{flex:1;overflow-y:auto;padding:var(--space-2);display:flex;flex-direction:column;gap:2px}.conv-item{width:100%;text-align:left;display:flex;align-items:center;gap:var(--space-3);padding:10px 12px;border-radius:var(--radius-md);border:1px solid transparent;background:transparent;color:inherit;cursor:pointer;transition:background-color var(--transition-fast),border-color var(--transition-fast)}.conv-item:hover{background:#ffffff0a}.conv-item.active{background:var(--color-surface-raised);border-color:#10b98140}.avatar{position:relative;width:44px;height:44px;min-width:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:var(--text-base);color:#fff;box-shadow:var(--shadow-inner);overflow:visible;user-select:none;flex-shrink:0}.avatar-img{width:100%;height:100%;object-fit:cover;border-radius:inherit;display:block}.avatar-initials{display:flex;align-items:center;justify-content:center;width:100%;height:100%;border-radius:inherit;letter-spacing:-.02em}.avatar-clickable{cursor:pointer;transition:transform var(--transition-fast),filter var(--transition-fast)}.avatar-clickable:hover{transform:scale(1.04);filter:brightness(1.1)}.avatar-sm{width:34px;height:34px;min-width:34px;border-radius:10px;font-size:var(--text-xs)}.avatar-xl{width:92px;height:92px;min-width:92px;border-radius:26px;font-size:2rem;box-shadow:0 10px 28px #00000073}.presence-dot{position:absolute;bottom:-2px;right:-2px;width:12px;height:12px;border-radius:50%;background:var(--color-success);border:2px solid var(--color-surface-sidebar);box-shadow:0 0 6px #10b98199;z-index:2}.conv-meta{flex:1;min-width:0}.conv-top-row{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);margin-bottom:3px}.conv-title{font-weight:600;font-size:var(--text-sm);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;display:flex;align-items:center;gap:5px}.conv-time{font-family:var(--font-mono);font-size:11px;color:var(--color-text-muted);flex-shrink:0}.conv-bottom-row{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.conv-preview{font-size:var(--text-xs);color:var(--color-text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread-pill{min-width:20px;height:20px;padding:0 6px;border-radius:var(--radius-full);background:var(--color-brand-primary);color:var(--color-text-inverted);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.chat-stage{display:flex;flex-direction:column;min-height:0;background-color:var(--color-surface-chat);background-image:radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);background-size:24px 24px;position:relative}.chat-stage.stage-dragover{background-color:#10b9810a}.drag-drop-overlay{position:absolute;inset:12px;border:2px dashed var(--color-brand-primary);border-radius:var(--radius-lg);background:#070a0fe0;backdrop-filter:blur(12px);z-index:50;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-3);color:var(--color-brand-primary);font-weight:600;font-size:var(--text-sm);pointer-events:none;animation:pop-in .18s var(--ease-spring)}.chat-header{height:66px;min-height:66px;padding:0 var(--space-5);background:#0e141fe0;backdrop-filter:blur(16px);border-bottom:1px solid var(--color-border-subtle);display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);z-index:10}.chat-stream{flex:1;overflow-y:auto;padding:var(--space-4) var(--space-6);display:flex;flex-direction:column;gap:10px;position:relative}.chat-date-separator{display:flex;justify-content:center;margin:var(--space-3) 0;position:sticky;top:6px;z-index:5;pointer-events:none}.chat-date-separator span{padding:4px 14px;border-radius:var(--radius-full);background:#0e141fd6;backdrop-filter:blur(10px);border:1px solid var(--color-border-subtle);font-size:11px;font-weight:600;color:var(--color-text-secondary);letter-spacing:.03em;box-shadow:var(--shadow-sm);pointer-events:auto}.msg-row{display:flex;flex-direction:column;max-width:min(74%,620px);animation:msg-pop-in .2s var(--ease-spring)}.msg-row.own{align-self:flex-end;align-items:flex-end}.msg-row.incoming{align-self:flex-start;align-items:flex-start}.msg-row-clustered{margin-top:-6px}.msg-row.own.msg-row-clustered .msg-bubble{border-top-right-radius:6px}.msg-row.incoming.msg-row-clustered .msg-bubble{border-top-left-radius:6px}.msg-bubble-wrap{position:relative;display:inline-flex;flex-direction:column}.msg-hover-actions{position:absolute;top:-14px;right:10px;display:inline-flex;align-items:center;gap:3px;background:var(--color-surface-raised);border:1px solid var(--color-border-default);border-radius:var(--radius-full);padding:2px 5px;box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transform:translateY(4px);transition:opacity var(--transition-fast),transform var(--transition-fast);z-index:10}.msg-row.incoming .msg-hover-actions{right:auto;left:10px}.msg-bubble-wrap:hover .msg-hover-actions{opacity:1;pointer-events:auto;transform:translateY(0)}.msg-action-btn{width:24px;height:24px;border-radius:50%;border:none;background:transparent;color:var(--color-text-secondary);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.msg-action-btn:hover{background:#ffffff1f;color:var(--color-text-primary);transform:scale(1.1)}.msg-bubble{position:relative;padding:10px 14px;border-radius:16px;box-shadow:var(--shadow-sm);word-break:break-word;transition:box-shadow var(--transition-fast)}.msg-row.own .msg-bubble{background:var(--color-bubble-out);border:1px solid var(--color-bubble-out-border);border-bottom-right-radius:4px}.msg-row.incoming .msg-bubble{background:var(--color-bubble-in);border:1px solid var(--color-bubble-in-border);border-bottom-left-radius:4px}.msg-bubble:hover{box-shadow:var(--shadow-md)}.msg-sender-name{font-size:var(--text-xs);font-weight:700;margin-bottom:4px;color:#34d399}.msg-reply-quote{padding:6px 10px;margin-bottom:8px;border-left:3px solid var(--color-brand-primary);background:#00000047;border-radius:6px;font-size:var(--text-xs)}.msg-reply-author{font-weight:700;color:var(--color-brand-primary);margin-bottom:2px}.msg-text{font-size:var(--text-base);line-height:1.52;white-space:pre-wrap}.msg-footer{display:flex;align-items:center;justify-content:flex-end;gap:6px;margin-top:5px;font-family:var(--font-mono);font-size:10.5px;color:#f8fafc94}.scroll-to-bottom-btn{position:absolute;bottom:24px;right:24px;width:40px;height:40px;border-radius:50%;background:var(--color-surface-raised);border:1px solid var(--color-border-default);color:var(--color-text-primary);box-shadow:var(--shadow-lg),0 0 16px #10b98138;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform var(--transition-fast),background-color var(--transition-fast),border-color var(--transition-fast);z-index:15;animation:pop-in .18s var(--ease-spring)}.scroll-to-bottom-btn:hover{background:var(--color-surface-hover);border-color:var(--color-brand-primary);transform:translateY(-2px)}.scroll-to-bottom-btn:active{transform:scale(.95)}.typing-indicator-bubble{align-self:flex-start;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:16px 16px 16px 4px;background:var(--color-bubble-in);border:1px solid var(--color-bubble-in-border);margin-top:2px;animation:msg-pop-in .2s var(--ease-spring)}.typing-dots{display:flex;align-items:center;gap:4px}.typing-dot{width:6px;height:6px;border-radius:50%;background:var(--color-brand-primary);animation:typing-bounce 1.3s infinite 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