:root{--canvas: #faf9f5;--surface: #ffffff;--surface-card: #f6f5f1;--surface-soft: #efede8;--navy: #181715;--navy-soft: #2a2826;--navy-muted: #3d3b38;--navy-card: #242220;--primary: #cc785c;--primary-hover: #b8684e;--primary-soft: rgba(204, 120, 92, .08);--accent-amber: #c49b3f;--accent-teal: #5a8f8c;--text: #1a1a1a;--text-soft: #4a4a48;--text-muted: #8a8a86;--muted: #6b6b68;--muted-soft: #9e9e9a;--danger: #d55c5c;--danger-soft: rgba(213, 92, 92, .08);--success: #5a9f6a;--border: #e4e2dc;--border-focus: #cc785c;--font-display: "Cormorant Garamond", "Georgia", serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", "Fira Code", "Consolas", monospace;--space-xs: 4px;--space-sm: 8px;--space-md: 12px;--space-lg: 16px;--space-xl: 24px;--space-2xl: 32px;--space-3xl: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-pill: 9999px;--ease-out: cubic-bezier(.22, 1, .36, 1);--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 2px 8px rgba(0,0,0,.06);--shadow-lg: 0 4px 16px rgba(0,0,0,.08)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font-body);font-size:.875rem;line-height:1.6;color:var(--text);background:var(--canvas);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.btn-primary{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border:none;border-radius:var(--radius-pill);background:var(--primary);color:#fff;font-family:var(--font-body);font-size:.82rem;font-weight:500;cursor:pointer;transition:background .15s var(--ease-out),transform .12s var(--ease-out);white-space:nowrap}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{cursor:not-allowed}.btn-text-link{background:none;border:none;cursor:pointer;font-family:var(--font-body);transition:color .15s var(--ease-out);padding:0}.btn-text-link:hover{color:var(--primary)!important}.btn-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;border-radius:var(--radius-sm);background:transparent;cursor:pointer;transition:background .15s var(--ease-out),color .15s var(--ease-out);flex-shrink:0;padding:0}.btn-icon:hover{background:var(--surface-soft);color:var(--primary)}.btn-icon:disabled{cursor:not-allowed}.badge-pill{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:var(--radius-pill);font-size:.7rem;font-weight:500;white-space:nowrap;line-height:1.3}.badge-pill--dot{width:5px;height:5px;border-radius:50%;flex-shrink:0}.nav{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 24px;border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0}.nav-brand{display:flex;align-items:center;gap:10px}.nav-wordmark{font-family:"DM Sans",var(--font-body);font-size:1.35rem;font-weight:600;color:var(--navy);letter-spacing:-.01em;line-height:1}.nav-end{display:flex;align-items:center;gap:12px}.status-dot{width:6px;height:6px;border-radius:50%;display:inline-block}.signin-main{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:calc(100vh - 64px);text-align:center;padding:40px 24px}.signin-headline{font-family:var(--font-display);font-size:2.2rem;font-weight:600;color:var(--navy);line-height:1.15;margin-bottom:12px;letter-spacing:-.01em}.signin-sub{font-size:.92rem;color:var(--text-soft);max-width:440px;line-height:1.6;margin-bottom:32px}.welcome{display:flex;flex-direction:column;align-items:center;text-align:center;padding:64px 24px}.welcome h1{font-family:var(--font-display);font-size:2rem;font-weight:600;color:var(--navy);line-height:1.15;margin-bottom:8px;letter-spacing:-.01em}.welcome p{font-size:.92rem;color:var(--text-soft);margin-bottom:32px;max-width:480px}.example-grid{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;max-width:640px}.example-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:16px 18px;font-size:.82rem;color:var(--text-soft);line-height:1.5;cursor:pointer;transition:border-color .15s var(--ease-out),box-shadow .15s var(--ease-out);min-width:180px;max-width:280px;text-align:left}.example-card:hover{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-soft)}.example-card-label{font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);display:block;margin-bottom:4px}.chat-container{display:flex;flex-direction:column;flex:1;min-height:0;max-width:960px;width:100%;margin:0 auto}.chat-scroll{flex:1;overflow-y:auto;padding:24px 16px;scrollbar-width:none}.chat-scroll::-webkit-scrollbar{display:none}.chat-empty{flex:1;display:flex;flex-direction:column;justify-content:center;min-height:0}.chat-empty-inner{display:flex;flex-direction:column;gap:0}.msg-user{background:var(--primary);color:#fff;padding:10px 16px;border-radius:var(--radius-lg) var(--radius-lg) var(--radius-sm) var(--radius-lg);max-width:72%;font-size:.85rem;line-height:1.6;word-break:break-word;text-align:left}.msg-assistant{background:var(--surface-card);border:1px solid var(--border);border-radius:var(--radius-lg) var(--radius-lg) var(--radius-lg) var(--radius-sm);padding:16px 18px;max-width:84%;font-size:.85rem;line-height:1.65;color:var(--text)}.msg-system{display:flex;justify-content:center;margin-bottom:12px}.msg-system-inner{display:flex;align-items:flex-start;gap:8px;padding:8px 14px;border-radius:var(--radius-md);background:var(--surface-soft);font-size:.78rem;color:var(--text-soft);max-width:80%;line-height:1.5}.msg-system--error{background:var(--danger-soft);color:var(--danger)}.msg-header{display:flex;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap}.msg-source-label{font-size:.78rem;font-weight:600;color:var(--text-soft)}.input-bar{padding:12px 16px 16px;flex-shrink:0}.input-wrapper{display:flex;align-items:flex-end;gap:8px;padding:8px;border-radius:var(--radius-md);background:var(--surface-card);border:1px solid var(--border);transition:border-color .15s var(--ease-out),box-shadow .15s var(--ease-out)}.input-wrapper:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 2px var(--primary-soft)}.input-area{flex:1;border:none;background:transparent;font-family:var(--font-body);font-size:.85rem;color:var(--text);resize:none;outline:none;line-height:1.5;min-height:24px;max-height:160px;padding:2px 0}.input-area::placeholder{color:var(--muted-soft)}.citation-card{margin-top:12px;padding-top:10px;border-top:1px solid var(--border)}.citation-label{font-size:.68rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:6px}.citation-list{display:flex;flex-wrap:wrap;gap:6px}.citation-tag{font-family:var(--font-mono);font-size:.7rem;padding:3px 8px;border-radius:var(--radius-sm);background:var(--surface-soft);color:var(--muted);word-break:break-all}.error-toast{padding:10px 16px;border-radius:var(--radius-md);background:var(--danger-soft);color:var(--danger);font-size:.82rem;text-align:center;line-height:1.5}@media(max-width:768px){.chat-scroll{padding:16px 12px}.msg-user{max-width:88%}.msg-assistant{max-width:92%}.input-bar{padding:8px 12px 12px}.welcome h1{font-size:1.5rem}.signin-headline{font-size:1.6rem}.example-card{min-width:140px;max-width:240px}}@media(min-width:769px)and (max-width:1024px){.msg-user{max-width:78%}.msg-assistant{max-width:88%}}