:root{--ie-bg:#f6f4f0;--ie-bg-warm:#eee9e2;--ie-surface:#fff;--ie-surface-raised:#fafaf8;--ie-border:#ddd7ce;--ie-border-light:#e8e3db;--ie-text:#2c2418;--ie-text-secondary:#6b6054;--ie-text-muted:#9e958a;--ie-accent:#ec5800;--ie-accent-light:#fff3eb;--ie-accent-hover:#d04e00;--ie-accent-glow:#ec580014;--ie-user-bubble:#2c2418;--ie-user-text:#f6f4f0;--ie-citation-bg:#fdf6ec;--ie-citation-border:#e8d5b0;--ie-citation-text:#8b6914;--ie-error:#c44536;--ie-error-bg:#fdf0ee;--ie-radius:10px;--ie-radius-lg:16px;--ie-serif:"Source Serif 4",Georgia,serif;--ie-sans:"DM Sans",-apple-system,BlinkMacSystemFont,sans-serif;--ie-mono:"IBM Plex Mono",monospace}.ie-page{background:var(--ie-bg);width:100%;min-height:100vh;font-family:var(--ie-sans);color:var(--ie-text);flex-direction:column;display:flex}.ie-header{background:var(--ie-surface);border-bottom:1px solid var(--ie-border);justify-content:space-between;align-items:center;gap:24px;padding:24px 40px;display:flex}.ie-header-left{align-items:center;gap:16px;display:flex}.ie-logo{background:var(--ie-accent);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;display:flex}.ie-logo svg{color:#fff;width:22px;height:22px}.ie-header-title{font-family:var(--ie-serif);color:var(--ie-text);letter-spacing:-.01em;font-size:1.35rem;font-weight:600}.ie-header-subtitle{color:var(--ie-text-muted);margin-top:1px;font-size:.8rem}.ie-header-right{align-items:center;gap:12px;display:flex}.ie-doc-count{color:var(--ie-text-secondary);background:var(--ie-bg);border:1px solid var(--ie-border-light);white-space:nowrap;border-radius:20px;padding:6px 14px;font-size:.8rem;font-weight:500}.ie-clear-btn{font-family:var(--ie-sans);color:var(--ie-error);background:var(--ie-error-bg);cursor:pointer;white-space:nowrap;border:1px solid #c4453626;border-radius:8px;padding:6px 14px;font-size:.78rem;font-weight:500;transition:all .15s}.ie-clear-btn:hover{background:#c445361f}.ie-main{flex-direction:column;flex:1;width:100%;max-width:860px;min-height:0;margin:0 auto;padding:0 24px;display:flex;position:relative}.ie-upload-zone{border:2px dashed var(--ie-border);border-radius:var(--ie-radius-lg);background:var(--ie-surface);text-align:center;cursor:pointer;margin:24px 0 0;padding:32px;transition:all .2s;position:relative}.ie-upload-zone:hover,.ie-upload-zone--active{border-color:var(--ie-accent);background:var(--ie-accent-glow)}.ie-upload-zone--compact{justify-content:center;align-items:center;gap:10px;margin:16px 0 0;padding:16px 24px;display:flex}.ie-upload-zone--compact .ie-upload-icon{width:32px;height:32px;margin:0}.ie-upload-zone--compact .ie-upload-title{margin:0;font-size:.85rem}.ie-upload-zone--compact .ie-upload-subtitle{display:none}.ie-upload-icon{background:var(--ie-accent-light);border-radius:14px;justify-content:center;align-items:center;width:52px;height:52px;margin:0 auto 16px;transition:transform .2s;display:flex}.ie-upload-zone:hover .ie-upload-icon{transform:translateY(-2px)}.ie-upload-icon svg{width:24px;height:24px;color:var(--ie-accent)}.ie-upload-title{font-family:var(--ie-serif);color:var(--ie-text);margin-bottom:6px;font-size:1.05rem;font-weight:600}.ie-upload-subtitle{color:var(--ie-text-muted);font-size:.82rem;line-height:1.5}.ie-upload-input{display:none}.ie-docs-bar{flex-wrap:wrap;gap:8px;margin:16px 0 0;display:flex}.ie-doc-pill{background:var(--ie-surface);border:1px solid var(--ie-border-light);color:var(--ie-text);border-radius:10px;align-items:center;gap:8px;padding:8px 12px;font-size:.82rem;animation:.25s ie-fadeUp;display:flex}@keyframes ie-fadeUp{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.ie-doc-pill-icon{background:#fdf0ee;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;display:flex}.ie-doc-pill-icon svg{color:#c44536;width:14px;height:14px}.ie-doc-pill-info{flex-direction:column;min-width:0;display:flex}.ie-doc-pill-name{color:var(--ie-text);white-space:nowrap;text-overflow:ellipsis;max-width:180px;font-size:.8rem;font-weight:600;overflow:hidden}.ie-doc-pill-size{color:var(--ie-text-muted);font-size:.7rem}.ie-doc-pill-remove{width:22px;height:22px;color:var(--ie-text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;padding:0;font-size:1rem;line-height:1;transition:all .15s;display:flex}.ie-doc-pill-remove:hover{background:var(--ie-error-bg);color:var(--ie-error)}.ie-chat{flex-direction:column;flex:1;min-height:0;margin-top:16px;display:flex}.ie-messages{scroll-behavior:smooth;flex-direction:column;flex:1;gap:20px;padding:8px 0 24px;display:flex;overflow-y:auto}.ie-messages::-webkit-scrollbar{width:5px}.ie-messages::-webkit-scrollbar-track{background:0 0}.ie-messages::-webkit-scrollbar-thumb{background:var(--ie-border);border-radius:3px}.ie-empty{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:48px 24px;display:flex}.ie-empty-icon{background:var(--ie-bg-warm);border-radius:18px;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:20px;display:flex}.ie-empty-icon svg{width:30px;height:30px;color:var(--ie-text-muted)}.ie-empty-title{font-family:var(--ie-serif);color:var(--ie-text);margin-bottom:6px;font-size:1.15rem;font-weight:600}.ie-empty-subtitle{color:var(--ie-text-muted);max-width:380px;font-size:.85rem;line-height:1.5}.ie-suggestions{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:20px;display:flex}.ie-suggestion-btn{font-family:var(--ie-sans);color:var(--ie-accent);background:var(--ie-accent-light);cursor:pointer;white-space:nowrap;border:1px solid #1a6b4a26;border-radius:20px;padding:8px 16px;font-size:.8rem;transition:all .15s}.ie-suggestion-btn:hover{border-color:var(--ie-accent);background:#1a6b4a1f;transform:translateY(-1px)}.ie-message{flex-direction:column;animation:.3s ie-fadeUp;display:flex}.ie-message--user{align-items:flex-end}.ie-message--assistant{align-items:flex-start}.ie-message--error{align-items:center}.ie-message-label{text-transform:uppercase;letter-spacing:.05em;color:var(--ie-text-muted);margin-bottom:6px;padding:0 4px;font-size:.7rem;font-weight:600}.ie-bubble{border-radius:var(--ie-radius-lg);max-width:85%;padding:14px 18px;font-size:.9rem;line-height:1.7}.ie-bubble--user{background:var(--ie-user-bubble);color:var(--ie-user-text);border-bottom-right-radius:4px}.ie-bubble--assistant{background:var(--ie-surface);color:var(--ie-text);border:1px solid var(--ie-border-light);border-bottom-left-radius:4px}.ie-bubble--error{background:var(--ie-error-bg);color:var(--ie-error);text-align:center;border:1px solid #c4453633;max-width:70%;font-size:.85rem}.ie-bubble--assistant p{margin-bottom:12px}.ie-bubble--assistant p:last-child{margin-bottom:0}.ie-bubble--assistant strong{color:var(--ie-text);font-weight:600}.ie-bubble--assistant ul,.ie-bubble--assistant ol{margin:8px 0 12px 20px}.ie-bubble--assistant li{margin-bottom:4px}.ie-bubble--assistant ul:last-child,.ie-bubble--assistant ol:last-child{margin-bottom:0}.ie-citation{background:var(--ie-citation-bg);border:1px solid var(--ie-citation-border);font-family:var(--ie-mono);color:var(--ie-citation-text);white-space:nowrap;vertical-align:middle;border-radius:5px;align-items:center;gap:4px;padding:2px 9px;font-size:.72rem;font-weight:500;line-height:1.6;display:inline-flex}.ie-citation-icon{flex-shrink:0;width:11px;height:11px}.ie-typing{flex-direction:column;align-items:flex-start;animation:.3s ie-fadeUp;display:flex}.ie-typing-bubble{background:var(--ie-surface);border:1px solid var(--ie-border-light);border-radius:var(--ie-radius-lg);border-bottom-left-radius:4px;align-items:center;gap:5px;padding:16px 20px;display:flex}.ie-typing-dot{background:var(--ie-text-muted);border-radius:50%;width:7px;height:7px;animation:1.4s ease-in-out infinite ie-bounce}.ie-typing-dot:nth-child(2){animation-delay:.16s}.ie-typing-dot:nth-child(3){animation-delay:.32s}@keyframes ie-bounce{0%,60%,to{opacity:.4;transform:translateY(0)}30%{opacity:1;transform:translateY(-6px)}}.ie-input-bar{align-items:flex-end;gap:10px;padding:16px 0 24px;display:flex;position:relative}.ie-input-wrapper{flex:1;position:relative}.ie-input{width:100%;font-family:var(--ie-sans);color:var(--ie-text);background:var(--ie-surface);border:1.5px solid var(--ie-border);resize:none;border-radius:14px;min-height:50px;max-height:150px;padding:14px 18px;font-size:.9rem;line-height:1.5;transition:border-color .15s,box-shadow .15s;overflow-y:auto}.ie-input::placeholder{color:var(--ie-text-muted)}.ie-input:focus{border-color:var(--ie-accent);box-shadow:0 0 0 3px var(--ie-accent-glow);outline:none}.ie-input:disabled{opacity:.6;cursor:not-allowed}.ie-send-btn{background:var(--ie-accent);color:#fff;cursor:pointer;border:none;border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:50px;height:50px;transition:all .15s;display:flex}.ie-send-btn:hover:not(:disabled){background:var(--ie-accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #1a6b4a40}.ie-send-btn:disabled{opacity:.4;cursor:not-allowed}.ie-send-btn svg{width:20px;height:20px}.ie-copy-btn{background:var(--ie-bg);border:1px solid var(--ie-border-light);cursor:pointer;width:28px;height:28px;color:var(--ie-text-muted);opacity:0;border-radius:6px;justify-content:center;align-items:center;font-size:.7rem;transition:all .15s;display:flex;position:absolute;top:8px;right:8px}.ie-message:hover .ie-copy-btn{opacity:1}.ie-copy-btn:hover{background:var(--ie-surface);color:var(--ie-text-secondary)}.ie-bubble-wrapper{max-width:85%;position:relative}@media (max-width:768px){.ie-header{flex-wrap:wrap;gap:12px;padding:16px 20px}.ie-header-right{justify-content:flex-end;width:100%}.ie-main{padding:0 16px}.ie-upload-zone{margin:16px 0 0;padding:24px 16px}.ie-upload-zone--compact{padding:12px 16px}.ie-bubble,.ie-bubble-wrapper{max-width:92%}.ie-doc-pill-name{max-width:120px}.ie-input-bar{padding:12px 0 20px}.ie-suggestions{flex-direction:column;align-items:center}}@media (max-width:480px){.ie-header-subtitle{display:none}.ie-docs-bar{flex-direction:column}.ie-doc-pill-name{max-width:160px}}