:root{--color-bg: #101118;--color-surface: #1b1c25;--color-surface-hover: #242530;--color-surface-raised: #272834;--color-border: #30313f;--color-border-subtle: #28293a;--color-text: #e5e5e8;--color-text-secondary: #9ea3b0;--color-text-muted: #6d7284;--color-code-bg: rgba(99, 102, 241, .08);--color-code-border: rgba(99, 102, 241, .15);--color-primary: #6366f1;--color-primary-hover: #818cf8;--color-primary-muted: rgba(99, 102, 241, .15);--color-danger: #ef4444;--color-success: #22c55e;--color-warning: #f59e0b;--color-user-bubble: #6366f1;--color-user-text: #ffffff;--font-sans: "Plus Jakarta Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Menlo, monospace;--header-height: 56px;--max-content-width: 800px;--transition-fast: .15s ease;--transition-normal: .2s ease;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 9999px}[data-theme=light]{--color-bg: #fefefe;--color-surface: #f8f8fa;--color-surface-hover: #f1f2f5;--color-surface-raised: #ffffff;--color-border: #e3e4ea;--color-border-subtle: #ededf2;--color-text: #13152a;--color-text-secondary: #4d5264;--color-text-muted: #9a9eb0;--color-code-bg: rgba(99, 102, 241, .06);--color-code-border: rgba(99, 102, 241, .12);--color-primary-hover: #4f46e5;--color-primary-muted: rgba(99, 102, 241, .1)}[data-theme=light] .sync-dropdown{box-shadow:0 4px 12px #0000000f,0 12px 28px #00000014}[data-theme=light] .tool-item,[data-theme=light] .input-bar-inner{box-shadow:0 1px 3px #0000000a}[data-theme=light] .message-text pre{box-shadow:inset 0 1px 3px #0000000a}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5}.app-loading{display:flex;align-items:center;justify-content:center;height:100vh}.loading-spinner{width:32px;height:32px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px;background:radial-gradient(ellipse at 50% 40%,rgba(99,102,241,.08) 0%,transparent 70%)}.login-card{text-align:center;max-width:380px;width:100%}.login-logo{margin-bottom:20px;position:relative}.login-logo:after{content:"";position:absolute;top:50%;left:50%;width:120px;height:120px;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(99,102,241,.25) 0%,transparent 70%);border-radius:50%;animation:logo-glow 3s ease-in-out infinite;pointer-events:none;z-index:-1}@keyframes logo-glow{0%,to{opacity:.6;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-50%) scale(1.15)}}.login-card h1{font-size:28px;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}.login-subtitle{color:var(--color-text-secondary);font-size:15px;margin-bottom:32px}.login-button{display:inline-flex;align-items:center;gap:10px;padding:12px 28px;background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:15px;font-weight:500;text-decoration:none;cursor:pointer;box-shadow:0 2px 8px #0000001f;transition:background var(--transition-fast),border-color var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast)}.login-button:hover{background:var(--color-surface-hover);border-color:var(--color-text-muted);transform:translateY(-1px);box-shadow:0 4px 12px #0000002e}.login-note{margin-top:16px;font-size:13px;color:var(--color-text-muted)}.chat-view{display:flex;flex-direction:column;height:100vh}.header{display:flex;align-items:center;justify-content:space-between;height:var(--header-height);padding:0 16px;border-bottom:1px solid var(--color-border-subtle);background:linear-gradient(to bottom,var(--color-surface),rgba(27,28,37,.85));backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);flex-shrink:0}[data-theme=light] .header{background:linear-gradient(to bottom,var(--color-surface),rgba(248,248,250,.88))}.header-left{display:flex;align-items:center;gap:10px}.header-title{font-size:16px;font-weight:600;letter-spacing:-.01em}.header-actions{display:flex;align-items:center;gap:8px}.header-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:13px;font-weight:500;cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans)}.header-btn:hover{background:var(--color-surface-hover);color:var(--color-text);border-color:var(--color-text-muted)}.header-btn-logout{border:none;color:var(--color-text-muted);padding:6px 8px}.header-btn-logout:hover{color:var(--color-danger);background:transparent;border:none}.header-user{display:flex;align-items:center;gap:8px;margin-left:8px;padding-left:12px;border-left:1px solid var(--color-border-subtle)}.header-avatar{width:28px;height:28px;border-radius:50%}.header-name{font-size:13px;color:var(--color-text-secondary)}.sync-icon{transition:color var(--transition-fast)}.sync-icon-spinning{animation:spin 1.2s linear infinite;color:var(--color-primary)}.sync-badge{width:6px;height:6px;background:var(--color-success);border-radius:50%;flex-shrink:0;animation:pulse-dot 2s ease-in-out infinite}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.4}}.header-sync-wrapper{position:relative}.sync-dropdown{position:absolute;top:calc(100% + 6px);right:0;background:var(--color-surface-raised);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:4px;min-width:200px;z-index:100;box-shadow:0 4px 12px #00000026,0 12px 28px #00000040}.sync-item{display:flex;align-items:center;justify-content:space-between;width:100%;padding:8px 12px;background:none;border:none;color:var(--color-text);font-size:13px;font-family:var(--font-sans);cursor:pointer;border-radius:var(--radius-sm);transition:background var(--transition-fast)}.sync-item:hover:not(:disabled){background:var(--color-surface-hover)}.sync-item:disabled{cursor:default}.sync-item-running{color:var(--color-primary-hover)}.sync-item-label{flex:1;text-align:left}.sync-item-spinner{width:14px;height:14px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite;flex-shrink:0}.connection-banner{padding:8px 16px;background:var(--color-warning);color:#000;font-size:13px;font-weight:500;text-align:center;flex-shrink:0}.message-list{flex:1;overflow-y:auto;padding:24px 16px;scroll-behavior:smooth}.message-list-empty{display:flex;align-items:center;justify-content:center}.empty-state{text-align:center;max-width:480px}.empty-state img{margin-bottom:16px}.empty-state h2{font-size:22px;font-weight:600;margin-bottom:8px}.empty-state p{color:var(--color-text-secondary);font-size:15px;margin-bottom:24px}.empty-examples{display:flex;flex-direction:column;gap:8px}@keyframes hint-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.empty-example{padding:10px 16px;background:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);font-size:14px;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);animation:hint-in .35s ease-out both}.empty-example:nth-child(1){animation-delay:0ms}.empty-example:nth-child(2){animation-delay:60ms}.empty-example:nth-child(3){animation-delay:.12s}.empty-example:nth-child(4){animation-delay:.18s}.empty-example:hover{border-color:var(--color-primary);color:var(--color-text);background:var(--color-primary-muted)}@keyframes message-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message{max-width:var(--max-content-width);margin:0 auto 16px;animation:message-in .3s ease-out both}.message-user{display:flex;justify-content:flex-end}.message-user .message-content{background:var(--color-user-bubble);color:var(--color-user-text);border-radius:var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);padding:10px 16px;max-width:80%}.message-user .message-text p{margin:0;white-space:pre-wrap}.message-assistant .message-content{max-width:100%}.message-text{font-size:14.5px;line-height:1.6}.message-text p{margin:0 0 12px}.message-text p:last-child{margin-bottom:0}.message-text h1,.message-text h2,.message-text h3{margin:16px 0 8px;font-weight:600}.message-text h1{font-size:20px}.message-text h2{font-size:17px}.message-text h3{font-size:15px}.message-text ul,.message-text ol{margin:8px 0;padding-left:24px}.message-text li{margin:4px 0}.message-text code{font-family:var(--font-mono);font-size:13px;background:var(--color-code-bg);border:1px solid var(--color-code-border);padding:2px 6px;border-radius:4px}.message-text pre{margin:12px 0;padding:14px 16px;background:var(--color-bg);border:1px solid var(--color-border-subtle);border-radius:var(--radius-md);overflow-x:auto;font-size:13px;line-height:1.5;box-shadow:inset 0 1px 4px #0000000f}.message-text pre code{background:none;border:none;padding:0;border-radius:0}.message-text table{border-collapse:collapse;margin:12px 0;font-size:13.5px;width:100%}.message-text th,.message-text td{padding:8px 12px;border:1px solid var(--color-border);text-align:left}.message-text th{background:var(--color-surface);font-weight:600}.message-text blockquote{margin:12px 0;padding:8px 16px;border-left:3px solid var(--color-primary);color:var(--color-text-secondary)}.message-text a{color:var(--color-primary-hover);text-decoration:none}.message-text a:hover{text-decoration:underline}.message-text strong{font-weight:600}.code-block-wrapper{position:relative}.code-copy-btn{position:absolute;top:8px;right:8px;padding:4px 10px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text-muted);font-size:11px;font-family:var(--font-sans);cursor:pointer;opacity:0;transition:opacity var(--transition-fast)}.code-block-wrapper:hover .code-copy-btn{opacity:1}.code-copy-btn:hover{color:var(--color-text);background:var(--color-surface-hover)}.message-thinking{display:flex;gap:4px;padding:8px 0}.thinking-dot{width:6px;height:6px;background:var(--color-text-muted);border-radius:50%;animation:thinking 1.4s infinite}.thinking-dot:nth-child(2){animation-delay:.2s}.thinking-dot:nth-child(3){animation-delay:.4s}@keyframes thinking{0%,80%,to{opacity:.3;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}.message-meta{display:flex;align-items:center;gap:12px;margin-top:8px;font-size:12px;color:var(--color-text-muted)}.message-meta-streaming{gap:6px}.elapsed-dot{width:6px;height:6px;background:var(--color-primary);border-radius:50%;animation:pulse-dot 2s ease-in-out infinite}.tool-activity{margin-bottom:12px;display:flex;flex-direction:column;gap:4px}.tool-item{border:1px solid var(--color-border-subtle);border-radius:var(--radius-sm);overflow:hidden;box-shadow:0 1px 4px #00000014}.tool-running{border-color:var(--color-primary-muted)}.tool-header{display:flex;align-items:center;gap:8px;width:100%;padding:6px 10px;background:var(--color-surface);border:none;color:var(--color-text-secondary);font-size:12.5px;font-family:var(--font-sans);cursor:pointer;transition:background var(--transition-fast)}.tool-header:hover{background:var(--color-surface-hover)}.tool-icon{flex-shrink:0;color:var(--color-text-muted)}.tool-name{font-weight:600;color:var(--color-text);flex-shrink:0}.tool-summary{flex:1;text-align:left;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--color-text-muted);font-family:var(--font-mono);font-size:11.5px}.tool-spinner{width:12px;height:12px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite;flex-shrink:0}.tool-chevron{flex-shrink:0;transition:transform var(--transition-fast);color:var(--color-text-muted)}.tool-chevron-open{transform:rotate(180deg)}.tool-detail{border-top:1px solid var(--color-border-subtle);padding:8px 10px;background:var(--color-bg)}.tool-section{margin-bottom:8px}.tool-section:last-child{margin-bottom:0}.tool-section-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);margin-bottom:4px}.tool-pre{font-family:var(--font-mono);font-size:12px;line-height:1.4;white-space:pre-wrap;word-break:break-word;color:var(--color-text-secondary);max-height:300px;overflow-y:auto}.input-bar{flex-shrink:0;padding:12px 16px 16px;border-top:1px solid var(--color-border-subtle);background:var(--color-surface)}.input-bar-inner{display:flex;align-items:flex-end;gap:8px;max-width:var(--max-content-width);margin:0 auto;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:8px 8px 8px 16px;box-shadow:0 2px 6px #0000000f;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input-bar-inner:focus-within{border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-muted)}.input-textarea{flex:1;background:none;border:none;color:var(--color-text);font-family:var(--font-sans);font-size:14.5px;line-height:1.5;resize:none;outline:none;padding:4px 0;max-height:200px}.input-textarea::placeholder{color:var(--color-text-muted)}.input-btn{flex-shrink:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast)}.input-btn-send{background:var(--color-primary);color:#fff}.input-btn-send:hover:not(:disabled){background:var(--color-primary-hover)}.input-btn-send:disabled{opacity:.4;cursor:not-allowed}.input-btn-stop{background:var(--color-danger);color:#fff}.input-btn-stop:hover{background:#dc2626}.input-hint{text-align:center;font-size:11px;color:var(--color-text-muted);margin-top:6px}@media(max-width:640px){.header-name,.header-btn-logout{display:none}.header-user{border-left:none;padding-left:0}.message-user .message-content{max-width:90%}.empty-state{padding:0 16px}}