:root{--chat-bg:#fafafa;--chat-surface:#fff;--chat-border:#e5e5e5;--chat-border-subtle:#f0f0f0;--chat-text-primary:#171717;--chat-text-secondary:#525252;--chat-text-muted:#a3a3a3;--atlas-primary:#059669;--atlas-bg:rgba(5,150,105,.1);--atlas-border:rgba(5,150,105,.2);--sage-primary:#7c3aed;--sage-bg:rgba(124,58,237,.1);--sage-border:rgba(124,58,237,.2);--forge-primary:#d97706;--forge-bg:rgba(217,119,6,.1);--forge-border:rgba(217,119,6,.2);--chat-spacing-xs:4px;--chat-spacing-sm:8px;--chat-spacing-md:16px;--chat-spacing-lg:24px;--chat-spacing-xl:32px;--chat-radius-sm:8px;--chat-radius-md:12px;--chat-radius-lg:16px;--chat-radius-xl:20px;--chat-shadow-sm:0 1px 2px rgba(0,0,0,.04);--chat-shadow-md:0 4px 12px rgba(0,0,0,.08);--chat-shadow-lg:0 12px 32px rgba(0,0,0,.12)}.dark{--chat-bg:#0a0a0b;--chat-surface:#111113;--chat-border:#27272a;--chat-border-subtle:#1c1c1e;--chat-text-primary:#fafafa;--chat-text-secondary:#a1a1aa;--chat-text-muted:#71717a;--chat-shadow-sm:0 1px 2px rgba(0,0,0,.2);--chat-shadow-md:0 4px 12px rgba(0,0,0,.3);--chat-shadow-lg:0 12px 32px rgba(0,0,0,.4)}.chat-container{background:var(--chat-bg);color:var(--chat-text-primary)}.chat-surface{background:var(--chat-surface);border:1px solid var(--chat-border);border-radius:var(--chat-radius-lg)}.chat-scrollbar{scrollbar-width:thin;scrollbar-color:var(--chat-border) transparent}.chat-scrollbar::-webkit-scrollbar{width:6px}.chat-scrollbar::-webkit-scrollbar-track{background:transparent}.chat-scrollbar::-webkit-scrollbar-thumb{background-color:var(--chat-border);border-radius:3px}.chat-scrollbar::-webkit-scrollbar-thumb:hover{background-color:var(--chat-text-muted)}@keyframes messageSlideIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message-bubble{animation:messageSlideIn .2s ease-out}@keyframes thinkingPulse{0%,to{opacity:.4}50%{opacity:1}}.thinking-dot{animation:thinkingPulse 1.2s infinite}.thinking-dot:nth-child(2){animation-delay:.2s}.thinking-dot:nth-child(3){animation-delay:.4s}.agent-atlas{--agent-primary:var(--atlas-primary);--agent-bg:var(--atlas-bg);--agent-border:var(--atlas-border)}.agent-sage{--agent-primary:var(--sage-primary);--agent-bg:var(--sage-bg);--agent-border:var(--sage-border)}.agent-forge{--agent-primary:var(--forge-primary);--agent-bg:var(--forge-bg);--agent-border:var(--forge-border)}.agent-badge,.agent-icon{background:var(--agent-bg);border:1px solid var(--agent-border);color:var(--agent-primary)}.artifact-panel{background:var(--chat-surface);border-left:1px solid var(--chat-border);box-shadow:var(--chat-shadow-lg)}.artifact-toolbar{background:var(--chat-bg);border-bottom:1px solid var(--chat-border-subtle)}.artifact-editor{font-family:SF Mono,Fira Code,Consolas,monospace;font-size:13px;line-height:1.6}.chat-input{background:var(--chat-surface);border:1px solid var(--chat-border);border-radius:var(--chat-radius-xl);transition:border-color .2s,box-shadow .2s}.chat-input:focus{border-color:var(--chat-text-primary);box-shadow:0 0 0 2px rgba(0,0,0,.05)}.dark .chat-input:focus{box-shadow:0 0 0 2px hsla(0,0%,100%,.05)}.thread-item{transition:background-color .15s,transform .15s}.thread-item:hover{background:var(--chat-bg)}.thread-item.active{background:var(--chat-border-subtle)}.pdf-panel{border-left:1px solid var(--chat-border)}.chat-dropdown,.pdf-panel{background:var(--chat-surface)}.chat-dropdown{border:1px solid var(--chat-border);border-radius:var(--chat-radius-lg);box-shadow:var(--chat-shadow-lg)}.chat-dropdown-item{transition:background-color .1s}.chat-dropdown-item:hover,.page-citation{background:var(--chat-bg)}.page-citation{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;margin:0 2px;border-radius:6px;border:1px solid var(--chat-border);font-size:11px;font-weight:500;color:var(--chat-text-secondary);cursor:pointer;transition:background-color .15s,border-color .15s}.page-citation:hover{background:var(--chat-border-subtle);border-color:var(--chat-text-muted)}.chat-prose{--tw-prose-body:var(--chat-text-primary);--tw-prose-headings:var(--chat-text-primary);--tw-prose-links:var(--chat-text-primary);--tw-prose-bold:var(--chat-text-primary);--tw-prose-counters:var(--chat-text-secondary);--tw-prose-bullets:var(--chat-text-muted);--tw-prose-hr:var(--chat-border);--tw-prose-quotes:var(--chat-text-secondary);--tw-prose-quote-borders:var(--chat-border);--tw-prose-captions:var(--chat-text-muted);--tw-prose-code:var(--chat-text-primary);--tw-prose-pre-code:#e5e5e5;--tw-prose-pre-bg:#171717;--tw-prose-th-borders:var(--chat-border);--tw-prose-td-borders:var(--chat-border-subtle)}@media (max-width:768px){.chat-container{--chat-spacing-lg:16px;--chat-spacing-xl:24px}.artifact-panel{width:100%!important;max-width:100%!important}}.chat-focus-ring:focus-visible{outline:none;box-shadow:0 0 0 2px var(--chat-surface),0 0 0 4px var(--chat-text-primary)}.dark .chat-focus-ring:focus-visible{box-shadow:0 0 0 2px var(--chat-surface),0 0 0 4px var(--chat-text-primary)}@keyframes shimmer{0%{background-position:-200px 0}to{background-position:calc(200px + 100%) 0}}.chat-skeleton{background:linear-gradient(90deg,var(--chat-border-subtle) 0,var(--chat-bg) 40px,var(--chat-border-subtle) 80px);background-size:200px 100%;animation:shimmer 1.5s infinite}