.auth-screen{min-height:100vh;display:grid;place-items:center;background:var(--canvas);padding:24px}.auth-card{width:100%;max-width:380px}.auth-mark{display:flex;align-items:center;gap:10px;margin-bottom:40px}.auth-mark-icon{width:32px;height:32px;border-radius:8px;background:var(--ink);display:grid;place-items:center;color:var(--canvas)}.auth-mark-name{font-family:var(--font-serif);font-size:20px;font-weight:600;letter-spacing:-.01em}.auth-title{font-family:var(--font-serif);font-size:28px;font-weight:500;margin:0 0 8px;letter-spacing:-.01em}.auth-subtitle{color:var(--text-secondary);font-size:14px;margin:0 0 32px}.auth-field{margin-bottom:16px}.auth-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.auth-input{width:100%;padding:11px 13px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--canvas-raised);font-size:14px;color:var(--text-primary);transition:border-color .15s ease}.auth-input:focus{border-color:var(--accent)}.auth-submit{width:100%;padding:12px;background:var(--ink);color:var(--canvas);border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;margin-top:8px;transition:background .15s ease}.auth-submit:hover:not(:disabled){background:var(--ink-soft)}.auth-submit:disabled{opacity:.6;cursor:default}.auth-switch{text-align:center;font-size:13px;color:var(--text-secondary);margin-top:24px}.auth-switch a{color:var(--accent);font-weight:500;text-decoration:none}.auth-error{background:var(--danger-soft);color:var(--danger);font-size:13px;padding:10px 12px;border-radius:var(--radius-sm);margin-bottom:16px}.workspace{height:100vh;display:flex;flex-direction:column}.workspace-header{height:56px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--border);background:var(--canvas-raised)}.workspace-brand{display:flex;align-items:center;gap:10px}.workspace-brand-mark{width:26px;height:26px;border-radius:7px;background:var(--ink);color:var(--canvas);display:grid;place-items:center}.workspace-brand-name{font-family:var(--font-serif);font-size:16px;font-weight:600;letter-spacing:-.01em}.workspace-user{display:flex;align-items:center;gap:10px}.workspace-user-name{font-size:13px;color:var(--text-secondary)}.icon-btn{width:30px;height:30px;display:grid;place-items:center;border:none;background:transparent;border-radius:var(--radius-sm);color:var(--text-secondary);transition:background .15s ease}.icon-btn:hover{background:var(--canvas);color:var(--text-primary)}.workspace-body{flex:1;display:flex;min-height:0}.workspace-left{width:280px;flex-shrink:0;display:flex;flex-direction:column;border-right:1px solid var(--border);background:var(--canvas-raised);overflow:hidden}.doc-sidebar{padding:16px 14px 12px;border-bottom:1px solid var(--border)}.doc-sidebar-header{display:flex;align-items:baseline;gap:6px;margin-bottom:12px}.doc-sidebar-title{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-tertiary)}.doc-sidebar-count{font-family:var(--font-mono);font-size:11px;color:var(--text-tertiary)}.doc-dropzone{display:flex;flex-direction:column;align-items:center;gap:6px;padding:18px 12px;border:1.5px dashed var(--border-strong);border-radius:var(--radius-md);color:var(--text-tertiary);font-size:12px;text-align:center;cursor:pointer;transition:border-color .15s ease,color .15s ease,background .15s ease}.doc-dropzone:hover,.doc-dropzone-active{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.doc-list{margin-top:12px;max-height:220px;overflow-y:auto}.doc-empty{font-size:12px;color:var(--text-tertiary);padding:8px 2px;line-height:1.5}.doc-item{display:flex;align-items:center;gap:8px;padding:7px 6px;border-radius:var(--radius-sm);transition:background .15s ease}.doc-item:hover{background:var(--canvas)}.doc-item:hover .doc-item-delete{opacity:1}.doc-item-icon{color:var(--text-tertiary);flex-shrink:0}.doc-item-meta{min-width:0;flex:1;display:flex;flex-direction:column;gap:2px}.doc-item-name{font-size:12.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.doc-item-sub{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-tertiary)}.doc-item-delete{border:none;background:transparent;color:var(--text-tertiary);opacity:0;transition:opacity .15s ease,color .15s ease;padding:4px;border-radius:4px;flex-shrink:0}.doc-item-delete:hover{color:var(--danger)}.convo-list{flex:1;display:flex;flex-direction:column;min-height:0;padding:14px}.convo-new{display:flex;align-items:center;gap:8px;padding:9px 11px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--canvas-raised);font-size:13px;font-weight:500;color:var(--text-primary);margin-bottom:10px;transition:border-color .15s ease,background .15s ease}.convo-new:hover{border-color:var(--accent);background:var(--accent-soft)}.convo-items{overflow-y:auto;flex:1}.convo-item{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:8px 9px;border-radius:var(--radius-sm);cursor:pointer;font-size:12.5px;color:var(--text-secondary);transition:background .15s ease}.convo-item:hover{background:var(--canvas)}.convo-item-active{background:var(--accent-soft);color:var(--accent-hover);font-weight:500}.convo-item-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.convo-item-delete{border:none;background:transparent;color:var(--text-tertiary);opacity:0;padding:3px;border-radius:4px;flex-shrink:0;transition:opacity .15s ease}.convo-item:hover .convo-item-delete{opacity:1}.workspace-chat{flex:1;display:flex;flex-direction:column;min-width:0}.chat-scroll{flex:1;overflow-y:auto;padding:24px 0 12px}.chat-empty{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--text-secondary);max-width:420px;margin:0 auto;padding:40px 20px}.chat-empty-icon{width:56px;height:56px;border-radius:16px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:18px}.chat-empty h2{font-family:var(--font-serif);font-size:20px;font-weight:500;margin:0 0 8px;color:var(--text-primary)}.chat-empty p{font-size:13.5px;line-height:1.5;margin:0}.chat-message{display:flex;gap:12px;max-width:720px;margin:0 auto 26px;padding:0 24px}.chat-message-avatar{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;flex-shrink:0;margin-top:2px}.chat-message-user .chat-message-avatar{background:var(--sage-soft);color:var(--sage)}.chat-message-assistant .chat-message-avatar{background:var(--ink);color:var(--canvas)}.chat-message-body{flex:1;min-width:0}.chat-message-text{font-size:15px;line-height:1.65;white-space:pre-wrap}.chat-message-user .chat-message-text{font-family:var(--font-sans);font-weight:500}.chat-message-assistant .chat-message-text{font-family:var(--font-serif)}.cursor-blink{display:inline-block;width:2px;height:15px;background:var(--accent);margin-left:2px;vertical-align:text-bottom;animation:blink 1s step-start infinite}@keyframes blink{50%{opacity:0}}.citation-chip{display:inline-flex;align-items:center;justify-content:center;min-width:15px;height:15px;padding:0 3px;margin-left:2px;background:var(--accent-soft);color:var(--accent-hover);border-radius:4px;font-family:var(--font-mono);font-size:10px;font-weight:500;cursor:default;transition:background .15s ease,transform .1s ease;top:-.4em}.citation-chip-active{background:var(--accent);color:#fff;transform:scale(1.1)}.sources-panel{margin-top:12px}.sources-toggle{display:flex;align-items:center;gap:5px;border:none;background:transparent;color:var(--text-tertiary);font-size:12px;font-weight:500;padding:4px 2px}.sources-toggle:hover{color:var(--text-secondary)}.chevron-open{transform:rotate(180deg)}.sources-grid{display:grid;gap:8px;margin-top:10px}.source-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;background:var(--canvas-raised);transition:border-color .15s ease,background .15s ease}.source-card-active{border-color:var(--accent);background:var(--accent-soft)}.source-card-header{display:flex;align-items:center;gap:6px;margin-bottom:5px;color:var(--text-tertiary)}.source-card-name{font-size:11.5px;font-weight:500;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.source-card-score{font-family:var(--font-mono);font-size:10px;color:var(--sage)}.source-card-text{font-size:12px;line-height:1.5;color:var(--text-secondary);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.chat-input-bar{flex-shrink:0;display:flex;gap:10px;max-width:720px;width:100%;margin:0 auto;padding:12px 24px 24px}.chat-input{flex:1;padding:13px 16px;border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--canvas-raised);font-size:14px;color:var(--text-primary);transition:border-color .15s ease}.chat-input:focus{border-color:var(--accent)}.chat-input:disabled{opacity:.6}.chat-send{width:44px;height:44px;flex-shrink:0;display:grid;place-items:center;border:none;border-radius:var(--radius-md);background:var(--ink);color:var(--canvas);transition:background .15s ease,opacity .15s ease}.chat-send:hover:not(:disabled){background:var(--ink-soft)}.chat-send:disabled{opacity:.4;cursor:default}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.mode-toggle{display:flex;align-items:center;gap:6px;flex-shrink:0;height:44px;padding:0 14px;border:1px solid var(--border-strong);border-radius:var(--radius-md);background:var(--canvas-raised);font-size:12.5px;font-weight:600;color:var(--text-secondary);transition:border-color .15s ease,background .15s ease,color .15s ease}.mode-toggle:hover{border-color:var(--accent)}.mode-toggle-active{background:var(--ink);border-color:var(--ink);color:var(--canvas)}.agent-trace{margin-top:10px;margin-bottom:4px}.trace-toggle{display:flex;align-items:center;gap:5px;border:none;background:transparent;color:var(--sage);font-size:12px;font-weight:500;padding:4px 2px}.trace-toggle:hover{color:var(--text-secondary)}.trace-steps{display:flex;flex-direction:column;gap:6px;margin-top:8px;padding-left:2px}.trace-step{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--text-secondary);padding:6px 10px;background:var(--sage-soft);border-radius:var(--radius-sm);width:fit-content;max-width:100%}.trace-step-final{color:var(--accent-hover);background:var(--accent-soft)}.trace-step-label{font-weight:500;color:var(--text-primary);white-space:nowrap}.trace-step-detail{color:var(--text-tertiary);font-family:var(--font-mono);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:220px}.trace-step-empty{display:flex;align-items:center;gap:3px;color:var(--danger);font-size:11px;flex-shrink:0}@media (max-width: 768px){.workspace-left{position:fixed;top:56px;left:0;bottom:0;z-index:10;width:260px}}:root{--ink: #14171c;--ink-soft: #1c2029;--canvas: #f7f6f3;--canvas-raised: #ffffff;--border: #e3e1da;--border-strong: #cac7bc;--text-primary: #1c1e22;--text-secondary: #5c6167;--text-tertiary: #8b9096;--accent: #4c5fd5;--accent-soft: #eceefc;--accent-hover: #3d4ec2;--sage: #8a9a8e;--sage-soft: #eef2ef;--amber: #d89a4e;--amber-soft: #faf1e3;--danger: #c15b4a;--danger-soft: #fbeeeb;--font-serif: "Source Serif 4", Georgia, serif;--font-sans: "Inter", -apple-system, sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font-sans);background:var(--canvas);color:var(--text-primary);-webkit-font-smoothing:antialiased}button{font-family:inherit;cursor:pointer}input,textarea{font-family:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}::selection{background:var(--accent-soft);color:var(--accent-hover)}a{color:inherit}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}