:root{--bg-primary: #0F1117;--bg-secondary: #1A1D27;--bg-tertiary: #242736;--bg-elevated: #2A2D3A;--bg-hover: #31354A;--accent-primary: #6366F1;--accent-primary-hsl: 239, 84%, 67%;--accent-primary-hover: #818CF8;--accent-primary-glow: rgba(99, 102, 241, .25);--accent-primary-subtle: rgba(99, 102, 241, .1);--accent-secondary: hsl(200, 80%, 55%);--accent-success: #22C55E;--accent-success-subtle: rgba(34, 197, 94, .15);--accent-warning: #F59E0B;--accent-warning-subtle: rgba(245, 158, 11, .15);--text-primary: #F1F5F9;--text-secondary: #94A3B8;--text-muted: #64748B;--text-accent: #A5B4FC;--border-default: rgba(255, 255, 255, .08);--border-hover: rgba(255, 255, 255, .15);--border-accent: rgba(99, 102, 241, .4);--sidebar-width: 280px;--preview-width: 33vw;--header-height: 64px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 20px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px var(--accent-primary-glow);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Plus Jakarta Sans,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow:hidden;height:100vh}#root{height:100vh;display:flex;flex-direction:column}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--bg-hover)}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-default);display:flex;flex-direction:column;overflow:hidden}.app-layout-two-col .chat-area{flex:1}.sidebar-right{width:260px;min-width:260px;background:var(--bg-secondary);border-left:1px solid var(--border-default);display:flex;flex-direction:column;overflow:hidden}.sidebar-right-header{padding:14px 16px;border-bottom:1px solid var(--border-default);font-size:13px;font-weight:700;color:var(--text-primary);letter-spacing:-.01em}.step-item.clickable{cursor:pointer}.step-item.clickable:hover{background:hsla(var(--accent-primary-hsl),.06)}.step-item.clickable:hover .step-name{color:var(--accent-primary)}.step-view-cue{display:flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:var(--radius-sm);color:var(--text-muted);opacity:.4;flex-shrink:0;margin-left:auto;transition:all var(--transition-fast)}.step-item.clickable:hover .step-view-cue{opacity:1;color:var(--accent-primary);background:hsla(var(--accent-primary-hsl),.1)}.step-item.active .step-view-cue{color:var(--accent-primary);opacity:.7}.step-item.completed .step-view-cue{color:var(--accent-success);opacity:.6}.step-item.completed.clickable:hover .step-view-cue{opacity:1;color:var(--accent-primary);background:hsla(var(--accent-primary-hsl),.1)}.sidebar-header{padding:20px 20px 16px;border-bottom:1px solid var(--border-default)}.sidebar-logo{display:flex;align-items:center;gap:10px;margin-bottom:4px}.sidebar-logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--accent-primary),#A78BFA);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.sidebar-logo h1{font-size:15px;font-weight:700;letter-spacing:-.02em;color:var(--text-primary)}.sidebar-subtitle{font-size:12px;color:var(--text-muted);margin-top:2px;padding-left:42px}.conversation-history{border-bottom:1px solid var(--border-default);display:flex;flex-direction:column}.history-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border-default)}.history-title{display:flex;align-items:center;gap:6px;font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.history-new-btn{width:24px;height:24px;border-radius:var(--radius-sm);border:1px solid var(--border-default);background:transparent;color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.history-new-btn:hover{color:var(--accent-primary);border-color:var(--accent-primary);background:hsla(var(--accent-primary-hsl),.1)}.history-list{max-height:160px;overflow-y:auto;padding:4px 8px}.history-list::-webkit-scrollbar{width:3px}.history-list::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:2px}.history-item{display:flex;align-items:center;gap:8px;width:100%;padding:6px 8px;border:none;background:transparent;color:var(--text-secondary);font-family:inherit;font-size:12px;text-align:left;cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast);position:relative}.history-item:hover{background:var(--bg-hover);color:var(--text-primary)}.history-item.active{background:hsla(var(--accent-primary-hsl),.1);color:var(--accent-primary)}.history-item-icon{display:flex;align-items:center;flex-shrink:0;color:inherit}.history-item.active .history-item-icon{color:var(--accent-primary)}.history-item-info{display:flex;flex-direction:column;flex:1;min-width:0;gap:1px}.history-item-name{font-weight:600;font-size:11.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-item-meta{font-size:10px;color:var(--text-muted)}.history-item-delete{display:none;align-items:center;justify-content:center;width:20px;height:20px;border:none;background:transparent;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);flex-shrink:0;transition:all var(--transition-fast)}.history-item:hover .history-item-delete{display:flex}.history-item-delete:hover{color:#e05252;background:#e052521a}.history-empty{padding:12px 8px;font-size:11px;color:var(--text-muted);text-align:center}.step-list{flex:1;overflow-y:auto;padding:12px}.step-item{display:flex;align-items:flex-start;gap:12px;padding:12px;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);position:relative;margin-bottom:2px}.step-item:hover{background:var(--bg-tertiary)}.step-item.active{background:var(--accent-primary-subtle);border:1px solid var(--border-accent)}.step-item.completed{opacity:.85}.step-icon{width:32px;height:32px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:13px;font-weight:700;transition:all var(--transition-base)}.step-icon.pending{background:var(--bg-tertiary);color:var(--text-muted);border:1px solid var(--border-default)}.step-icon.active{background:var(--accent-primary);color:#fff;box-shadow:var(--shadow-glow)}.step-icon.completed{background:var(--accent-success-subtle);color:var(--accent-success);border:1px solid rgba(34,197,94,.3)}.step-info{flex:1;min-width:0}.step-name{font-size:13px;font-weight:600;color:var(--text-primary);line-height:1.3}.step-item.pending .step-name{color:var(--text-muted)}.step-description{font-size:11px;color:var(--text-secondary);margin-top:2px;line-height:1.4}.step-connector{position:absolute;left:27px;top:44px;width:2px;height:calc(100% - 20px);background:var(--border-default)}.step-item.completed .step-connector{background:var(--accent-success);opacity:.3}.step-item.active .step-connector{background:var(--accent-primary);opacity:.3}.chat-area{flex:1;display:flex;flex-direction:column;min-width:0;border-right:1px solid var(--border-default)}.agent-header{height:var(--header-height);padding:0 24px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--border-default);background:var(--bg-secondary);flex-shrink:0}.agent-avatar{width:40px;height:40px;border-radius:var(--radius-full);background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px;flex-shrink:0}.agent-info{flex:1}.agent-name{font-size:15px;font-weight:700;color:var(--text-primary)}.agent-role{font-size:12px;color:var(--text-secondary);display:flex;align-items:center;gap:6px}.agent-status-dot{width:7px;height:7px;border-radius:var(--radius-full);background:var(--accent-success);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.agent-step-badge{font-size:11px;padding:4px 10px;background:var(--accent-primary-subtle);color:var(--text-accent);border-radius:var(--radius-full);border:1px solid var(--border-accent);font-weight:600}.messages-container{flex:1;overflow-y:auto;padding:20px 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var(--accent-primary);color:var(--text-primary)}.message.user .message-content{background:var(--accent-primary);color:#fff;border:none}.message.system .message-content{background:var(--accent-warning-subtle);border:1px solid rgba(245,158,11,.2);color:var(--accent-warning);font-size:13px;text-align:center;width:100%}.message-content h2,.message-content h3,.message-content h4{margin-top:12px;margin-bottom:6px;font-weight:700;color:var(--text-primary)}.message-content h2{font-size:16px;color:#a78bfa;padding-bottom:6px;border-bottom:1px solid hsla(var(--accent-primary-hsl),.15)}.message-content h3{font-size:14px;color:#a78bfa;padding:6px 10px;background:hsla(var(--accent-primary-hsl),.06);border-left:3px solid var(--accent-primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin-top:14px}.message-content h4{font-size:14px}.message-content p{margin-bottom:8px}.message-content p:last-child{margin-bottom:0}.message-content ul,.message-content ol{margin:6px 0;padding-left:20px}.message-content li{margin-bottom:4px}.message-content strong{color:#7dd3fc!important;font-weight:700}.message-content code{font-family:JetBrains Mono,monospace;font-size:12px;padding:2px 6px;background:hsla(var(--accent-primary-hsl),.1);border-radius:4px;color:#a78bfa}.message-content pre{margin:12px 0;padding:16px 18px;background:linear-gradient(135deg,hsla(var(--accent-primary-hsl),.04),#3366cc0a);border:1px solid hsla(var(--accent-primary-hsl),.15);border-left:3px solid var(--accent-primary);border-radius:var(--radius-md);overflow-x:auto;box-shadow:0 2px 8px #00000026}.message-content pre code{padding:0;background:none;font-family:var(--font-main);font-size:13.5px;line-height:1.7;color:#e2e8f0;white-space:pre-wrap;word-wrap:break-word}.chat-doc-card{margin:8px 0 6px;padding:6px 0;background:#272c3580;border:1px solid hsla(220,15%,35%,.3);border-radius:var(--radius-md);animation:docCardIn .4s ease-out}@keyframes 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h2{font-size:13.5px!important;font-weight:700!important;color:var(--text-primary)!important;margin:0 0 10px!important;padding-bottom:8px;border-bottom:1px solid hsla(220,15%,35%,.25)}.chat-doc-card h3{font-size:12.5px!important;font-weight:700!important;color:var(--text-primary)!important;margin:12px 0 4px!important;padding:0!important;background:none!important;border-left:none!important}.chat-doc-card p{color:var(--text-secondary);font-size:11.5px;line-height:1.6;margin-bottom:4px}.chat-doc-card strong{color:#7dd3fc!important;font-weight:400}.chat-doc-card ul,.chat-doc-card ol{margin:4px 0;padding-left:24px}.chat-doc-card li{color:var(--text-secondary);font-size:11.5px;line-height:1.6;margin-bottom:3px}.chat-doc-card li::marker{color:var(--text-muted)}.chat-doc-card code{font-family:JetBrains Mono,monospace;font-size:11.5px;padding:1px 5px;background:#363d4980;border-radius:3px;color:var(--text-secondary)}.menu-options{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}.menu-option-btn{display:flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-md);border:1px solid var(--border-default);background:var(--bg-tertiary);color:var(--text-primary);font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.menu-option-btn:hover{background:var(--bg-hover);border-color:var(--border-hover)}.menu-option-btn.primary{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.menu-option-btn.primary:hover{background:var(--accent-primary-hover);border-color:var(--accent-primary-hover)}.menu-option-btn svg{width:14px;height:14px}.typing-indicator{display:flex;gap:12px;align-self:flex-start;max-width:85%;animation:messageIn .3s ease-out}.typing-dots{display:flex;gap:4px;padding:16px 20px;background:var(--bg-secondary);border:1px solid var(--border-default);border-left:3px solid var(--accent-primary);border-radius:var(--radius-lg)}.typing-dot{width:7px;height:7px;border-radius:var(--radius-full);background:var(--text-muted);animation:typingBounce 1.4s ease-in-out infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}.chat-input-area{padding:16px 24px 20px;border-top:1px solid var(--border-default);background:var(--bg-secondary)}.chat-input-wrapper{display:flex;align-items:flex-end;gap:10px;background:var(--bg-tertiary);border-radius:var(--radius-lg);border:1px solid var(--border-default);padding:4px 4px 4px 16px;transition:border-color var(--transition-fast)}.chat-input-wrapper:focus-within{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-primary-glow)}.chat-input-wrapper textarea{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-family:inherit;font-size:14px;line-height:1.5;resize:none;max-height:120px;padding:10px 0}.chat-input-wrapper textarea::placeholder{color:var(--text-muted)}.send-btn{width:40px;height:40px;border-radius:var(--radius-md);border:none;background:var(--accent-primary);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);flex-shrink:0}.send-btn:hover:not(:disabled){background:var(--accent-primary-hover);transform:translateY(-1px)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.send-btn svg{width:18px;height:18px}.preview-panel{width:var(--preview-width);min-width:320px;background:linear-gradient(180deg,var(--bg-secondary) 0%,hsl(240 15% 8%) 100%);display:flex;flex-direction:column;overflow:hidden;border-left:1px solid var(--border-default);transition:width var(--transition-base),min-width var(--transition-base)}.preview-collapsed{width:48px;min-width:48px;align-items:center;justify-content:flex-start;padding-top:12px;background:var(--bg-secondary)}.preview-collapse-btn{width:36px;height:36px;border-radius:var(--radius-sm);border:1px solid var(--border-default);background:var(--bg-tertiary);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.preview-collapse-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-hover)}.preview-header{height:var(--header-height);padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-default);flex-shrink:0;background:var(--bg-secondary)}.preview-header h2{font-size:13px;font-weight:700;color:var(--text-primary);display:flex;align-items:center;gap:8px}.preview-header h2 svg{color:var(--accent-primary)}.preview-actions{display:flex;gap:6px;align-items:center}.preview-action-btn{width:30px;height:30px;border-radius:var(--radius-sm);border:1px solid var(--border-default);background:var(--bg-tertiary);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast)}.preview-action-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-hover)}.doc-progress-badge{display:flex;align-items:center;gap:5px;padding:4px 10px;border-radius:20px;font-size:11px;font-weight:700;font-family:inherit;color:var(--text-secondary);background:var(--bg-tertiary);border:1px solid var(--border-default);letter-spacing:.3px}.doc-progress-badge.complete{color:var(--accent-success);background:#21c45d1a;border-color:#21c45d4d}.doc-progress-badge svg{flex-shrink:0}.doc-progress-ring svg{display:block}.doc-progress-ring 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var(--transition-fast)}.preview-step-icon.completed{background:var(--accent-success);border-color:var(--accent-success);color:#fff}.preview-step-icon.active{border-color:var(--accent-primary);color:var(--accent-primary);box-shadow:0 0 8px hsla(var(--accent-primary-hsl),.3)}.preview-step-name{overflow:hidden;text-overflow:ellipsis}.doc-accordion{border:1px solid var(--border-default);border-radius:var(--radius-md);margin-bottom:8px;overflow:hidden;transition:border-color var(--transition-fast);background:#1d1d2b66}.doc-accordion:hover{border-color:var(--border-hover)}.doc-accordion.expanded{border-color:hsla(var(--accent-primary-hsl),.25)}.doc-accordion-header{display:flex;align-items:center;gap:8px;width:100%;padding:10px 14px;border:none;background:transparent;color:var(--text-primary);font-size:13.5px;font-weight:700;font-family:inherit;cursor:pointer;text-align:left;transition:background 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