:root{--color-bg: #ffffff;--color-surface: #f5f5f5;--color-surface-hover: #ebebeb;--color-border: #e0e0e0;--color-text: #1e1e1e;--color-text-muted: #6b7280;--color-primary: #e0301e;--color-primary-hover: #c4271a;--color-danger: #ef4444;--color-error-bg: #fef2f2;--color-user-bubble: #f0f4fa;--sidebar-width: 280px;--font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.6}.app-layout{display:flex;height:100vh;height:100dvh;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:#1a1a2e;border-right:1px solid var(--color-border);display:flex;flex-direction:column;padding:16px;overflow-y:auto;color:#e6e8eb}.sidebar-title{font-size:16px;font-weight:600;margin-bottom:12px}.sidebar-divider{height:1px;background:var(--color-border);margin:12px 0}.session-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:2px}.session-list-label{font-size:11px;text-transform:uppercase;color:var(--color-text-muted);letter-spacing:.05em;margin-bottom:6px}.session-item{display:flex;align-items:center;border-radius:6px;transition:background .15s}.session-item:hover{background:#ffffff1a}.session-item.active{background:#ffffff26}.session-btn{flex:1;background:none;border:none;color:#e6e8eb;text-align:left;padding:6px 8px;font-size:13px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.session-delete{background:none;border:none;color:#8b8f96;cursor:pointer;padding:6px 8px;font-size:12px;opacity:0;transition:opacity .15s}.session-item:hover .session-delete{opacity:1}.sidebar-footer{margin-top:auto;padding-top:12px;border-top:1px solid var(--color-border)}.api-url{font-size:11px;color:var(--color-text-muted);font-family:var(--font-mono);word-break:break-all}.settings-toggle{width:100%;background:none;border:none;color:#8b8f96;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:6px 0;font-size:13px}.settings-toggle:hover{color:#e6e8eb}.token-status{font-size:10px}.token-ok{color:#22c55e}.token-missing{color:var(--color-danger)}.settings-panel{margin-top:8px;display:flex;flex-direction:column;gap:8px}.settings-label{font-size:11px;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;display:flex;flex-direction:column;gap:4px}.settings-input{background:#2a2a40;border:1px solid #3a3a50;border-radius:4px;padding:6px 8px;color:#e6e8eb;font-size:12px;font-family:var(--font-mono);outline:none;width:100%}.settings-input:focus{border-color:var(--color-primary)}.settings-token{resize:vertical;min-height:50px}.settings-hint{font-size:11px;color:var(--color-text-muted)}.settings-divider{height:1px;background:var(--color-border);margin:4px 0}.settings-section-title{font-size:11px;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:6px;padding:8px 16px;font-size:13px;font-weight:500;cursor:pointer;transition:background .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-secondary{background:transparent;color:var(--color-text-muted);border:1px solid var(--color-border)}.btn-secondary:hover:not(:disabled){background:#ffffff0d;color:#e6e8eb}.btn-cancel{background:var(--color-danger);color:#fff}.full-width{width:100%}.welcome{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--color-text-muted)}.welcome h2{color:var(--color-text)}.chat-area{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden}.chat-area--empty{justify-content:center}.messages-container{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;padding:24px 32px;display:flex;flex-direction:column;gap:16px}.chat-area--empty .messages-container{flex:none}.chat-greeting{display:flex;align-items:center;justify-content:center;gap:12px;padding-bottom:24px}.chat-greeting h2{font-size:28px;font-weight:600;color:var(--color-text);margin:0}.greeting-logo{width:32px;height:32px}.chat-area--empty .chat-input-bar{border-top:none;max-width:680px;background:#fff;border-radius:12px;box-shadow:0 1px 6px #00000014;padding:12px 16px}.chat-area--empty .chat-input{background:transparent;border:none;font-size:16px}.message{display:flex;gap:12px;max-width:900px;width:100%;margin:0 auto}.message-avatar{width:28px;height:28px;border-radius:50%;background:#f5f5f5;border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;margin-top:2px;overflow:hidden}.avatar-logo{width:100%;height:100%;object-fit:cover}.title-logo{width:20px;height:20px;vertical-align:middle;border-radius:4px}.message-body{flex:1;min-width:0}.message-user .message-content{background:var(--color-user-bubble);border-radius:12px;padding:10px 14px;color:var(--color-text)}.message-content{line-height:1.6;overflow-wrap:break-word;word-break:break-word}.message-content p{margin-bottom:8px}.message-content p:last-child{margin-bottom:0}.message-content .disclaimer{font-style:italic;color:var(--color-text-muted);font-size:.85em;margin-top:16px;padding-top:12px;border-top:1px solid var(--color-border)}.message-content pre{background:var(--color-bg);border:1px solid var(--color-border);border-radius:6px;padding:12px;overflow-x:auto;font-family:var(--font-mono);font-size:12px;margin:8px 0}.message-content code{font-family:var(--font-mono);font-size:12px;background:var(--color-surface);padding:2px 4px;border-radius:3px}.message-content pre code{background:none;padding:0}.message-content table{border-collapse:collapse;margin:8px 0;width:100%}.message-content th,.message-content td{border:1px solid var(--color-border);padding:6px 10px;text-align:left}.message-content th{background:var(--color-surface)}.tool-status{margin-bottom:8px}.tool-status-label{font-size:12px;color:var(--color-primary);font-weight:500;display:block;margin-bottom:4px}.thinking-indicator{display:flex;align-items:center;gap:6px;padding:4px 0}.thinking-text{font-size:14px;color:var(--color-text-muted);font-weight:500}.thinking-dots{display:inline-flex;align-items:center;gap:3px}.thinking-dots .dot{width:5px;height:5px;border-radius:50%;background:var(--color-primary);opacity:.3;animation:dot-pulse 1.4s ease-in-out infinite}.thinking-dots .dot:nth-child(2){animation-delay:.2s}.thinking-dots .dot:nth-child(3){animation-delay:.4s}@keyframes dot-pulse{0%,80%,to{opacity:.3;transform:scale(1)}40%{opacity:1;transform:scale(1.2)}}.tool-call{border:1px solid var(--color-border);border-radius:6px;margin-bottom:6px;overflow:hidden}.tool-call-header{width:100%;background:var(--color-surface);border:none;color:#000;padding:8px 12px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;font-size:13px;font-weight:500}.tool-call-header:hover{background:var(--color-surface-hover)}.chevron{color:var(--color-text-muted);font-size:11px}.tool-call-body{display:flex;flex-direction:column;gap:12px;padding:12px;background:var(--color-bg);border-top:1px solid var(--color-border);max-height:400px;overflow-y:auto}.tool-label{font-size:11px;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;display:block;margin-bottom:4px}.json-preview{background:#f5f5f5;border:1px solid var(--color-border);border-radius:4px;padding:8px;font-family:var(--font-mono);font-size:11px;overflow-x:auto;max-height:300px;overflow-y:auto;white-space:pre-wrap;word-break:break-word;color:var(--color-text)}.json-empty{color:var(--color-text-muted);font-size:12px}.usage-info{font-size:12px;color:var(--color-text-muted);text-align:center;padding:4px 0}.error-banner{background:var(--color-error-bg);border:1px solid var(--color-danger);border-radius:6px;padding:12px;color:#dc2626;font-size:13px;max-width:900px;margin:0 auto;width:100%}.chat-input-bar{border-top:1px solid var(--color-border);padding:16px 32px;display:flex;gap:8px;max-width:964px;margin:0 auto;width:100%}.chat-input{flex:1;background:#f5f5f5;border:1px solid var(--color-border);border-radius:8px;padding:14px 18px;color:var(--color-text);font-size:16px;outline:none;transition:border-color .15s}.chat-input:focus{border-color:var(--color-primary)}.chat-input::placeholder{color:var(--color-text-muted);font-size:16px}.chat-input:disabled{opacity:.6}.mobile-header,.sidebar-overlay{display:none}@media(max-width:768px){.app-layout{flex-direction:column}.mobile-header{display:flex;align-items:center;gap:10px;background:#1a1a2e;color:#e6e8eb;padding:10px 16px;font-size:15px;font-weight:600;z-index:20;position:sticky;top:0}.hamburger{background:none;border:none;color:#e6e8eb;font-size:22px;cursor:pointer;padding:4px 8px;line-height:1}.mobile-title{flex:1}.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:30;transform:translate(-100%);transition:transform .25s ease;width:280px;min-width:280px}.sidebar.sidebar-open{transform:translate(0)}.sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:25}.messages-container{padding:16px}.chat-input-bar{padding:12px 16px}.message{gap:8px}.message-avatar{width:24px;height:24px;font-size:12px}.welcome h2{font-size:18px}}