*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0f0f0f;--surface:#1a1a1a;--surface-2:#222;--border:#2e2e2e;--text:#e8e8e8;--text-muted:#666;--accent:#4f8ef7;--accent-hover:#3a7be0;--user-bubble:#1e3a5f;--user-bubble-border:#2d5a9e;--assistant-bubble:#1a1a1a;--radius:10px;--font-mono:"JetBrains Mono", "Fira Code", "Cascadia Code", monospace}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,sans-serif;font-size:15px;line-height:1.6}#root{flex-direction:column;min-height:100vh;display:flex}.app-container{border-inline:1px solid var(--border);flex-direction:column;max-width:800px;height:100vh;margin:0 auto;display:flex}.upload-screen{background:var(--bg);flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:24px;display:flex}.upload-inner{text-align:center;width:100%;max-width:480px}.upload-icon{filter:grayscale(.3);margin-bottom:16px;font-size:40px}.upload-title{letter-spacing:-.5px;color:var(--text);margin-bottom:8px;font-size:26px;font-weight:600}.upload-subtitle{color:var(--text-muted);margin-bottom:40px;font-size:14px}.upload-dropzone{border:1px dashed var(--border);border-radius:var(--radius);cursor:pointer;background:var(--surface);flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:48px 32px;transition:border-color .2s,background .2s;display:flex}.upload-dropzone:hover{border-color:var(--accent);background:#0f1f3d}.upload-dropzone-icon{opacity:.6;font-size:26px}.upload-dropzone-label{color:var(--text);font-size:14px;font-weight:500}.upload-dropzone-hint{color:var(--text-muted);font-size:12px}.app-header{background:var(--surface);border-bottom:1px solid var(--border);z-index:10;justify-content:space-between;align-items:center;height:52px;min-height:52px;padding:0 16px;display:flex;position:relative}.header-left,.header-right{align-items:center;width:40px;display:flex}.header-center{flex-direction:column;align-items:center;gap:1px;display:flex;overflow:hidden}.header-title{font-family:var(--font-mono);color:var(--text);letter-spacing:.04em;font-size:13px;font-weight:600}.header-filename{font-family:var(--font-mono);color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;max-width:240px;font-size:10px;overflow:hidden}.hamburger-btn{cursor:pointer;background:0 0;border:none;border-radius:6px;flex-direction:column;gap:4px;padding:6px;transition:background .15s;display:flex}.hamburger-btn:hover{background:var(--surface-2)}.hamburger-bar{background:var(--text);border-radius:2px;width:18px;height:1.5px;display:block}.dropdown-menu{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);z-index:100;min-width:192px;position:absolute;top:52px;left:12px;overflow:hidden;box-shadow:0 8px 24px #0006}.dropdown-item{width:100%;color:var(--text);cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:10px;padding:11px 16px;font-family:inherit;font-size:14px;transition:background .15s;display:flex}.dropdown-item:hover{background:var(--border)}.dropdown-icon{color:var(--text-muted);text-align:center;width:14px;font-size:12px}.dropdown-divider{background:var(--border);height:1px}.modal-backdrop{z-index:200;background:#0009;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.modal{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:360px;padding:24px}.modal-title{color:var(--text);margin-bottom:8px;font-size:15px;font-weight:600}.modal-body{color:var(--text-muted);margin-bottom:20px;font-size:13px;line-height:1.6}.modal-actions{flex-wrap:wrap;gap:10px;display:flex}.modal-btn{font-size:13px;font-family:var(--font-mono);cursor:pointer;border:1px solid var(--border);white-space:nowrap;border-radius:8px;flex:1;padding:9px 14px;font-weight:500;transition:background .15s}.modal-btn.secondary{background:var(--surface);color:var(--text-muted)}.modal-btn.secondary:hover{background:var(--border)}.modal-btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.modal-btn.primary:hover{background:var(--accent-hover)}.summary-panel{border-bottom:1px solid var(--border);background:var(--surface);padding:20px 28px}.summary-header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.summary-label{text-transform:uppercase;letter-spacing:.12em;color:var(--text-muted);font-size:10px;font-weight:700;font-family:var(--font-mono)}.summary-toggle{font-family:var(--font-mono);color:var(--accent);cursor:pointer;letter-spacing:.04em;background:0 0;border:none;padding:0;font-size:10px}.summary-loading{color:var(--text-muted);font-size:13px;font-family:var(--font-mono);align-items:center;gap:10px;display:flex}.summary-scroll{scrollbar-width:thin;scrollbar-color:var(--border) transparent;max-height:80px;padding-right:4px;overflow-y:auto}.summary-scroll::-webkit-scrollbar{width:4px}.summary-scroll::-webkit-scrollbar-track{background:0 0}.summary-scroll::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.summary-scroll.expanded{max-height:280px}.summary-text{color:#aaa;white-space:pre-wrap;font-size:13px;line-height:1.7}.summary-scroll p{color:#aaa;margin-bottom:8px;font-size:13px;line-height:1.7}.summary-scroll p:last-child{margin-bottom:0}.summary-scroll strong{color:var(--text);font-weight:600}.summary-scroll ul,.summary-scroll ol{color:#aaa;margin-bottom:8px;padding-left:18px;font-size:13px}.summary-scroll li{margin-bottom:4px}.summary-scroll h1,.summary-scroll h2,.summary-scroll h3{color:var(--text);margin-top:10px;margin-bottom:6px;font-size:13px;font-weight:600}.chat-container{background:var(--bg);flex-direction:column;flex-grow:1;display:flex;overflow:hidden}.message-list{scrollbar-width:thin;scrollbar-color:var(--border) transparent;flex-direction:column;flex-grow:1;gap:14px;padding:24px 28px;display:flex;overflow-y:auto}.message-list::-webkit-scrollbar{width:4px}.message-list::-webkit-scrollbar-track{background:0 0}.message-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}.loading-bubble{align-items:center;gap:5px;padding:14px 16px;display:flex}.loading-dot{background:var(--text-muted);border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite dotBounce}.loading-dot:nth-child(2){animation-delay:.2s}.loading-dot:nth-child(3){animation-delay:.4s}@keyframes dotBounce{0%,80%,to{opacity:.4;transform:scale(.7)}40%{opacity:1;transform:scale(1)}}.message-empty{text-align:center;color:var(--text-muted);font-size:13px;font-family:var(--font-mono);margin-top:40px}.message-row{animation:.22s both fadeSlideIn;display:flex}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.message-row.user{justify-content:flex-end}.message-row.assistant{justify-content:flex-start}.message-bubble{border-radius:var(--radius);max-width:78%;padding:11px 15px;font-size:14px;line-height:1.65}.message-bubble.user{background:var(--user-bubble);color:#d6e8ff;border:1px solid var(--user-bubble-border);font-family:system-ui,sans-serif}.message-bubble.assistant{background:var(--assistant-bubble);color:var(--text);border:1px solid var(--border)}.message-bubble.assistant p{margin-bottom:8px}.message-bubble.assistant p:last-child{margin-bottom:0}.message-bubble.assistant strong{color:#fff;font-weight:600}.message-bubble.assistant ul,.message-bubble.assistant ol{margin-bottom:8px;padding-left:18px}.message-bubble.assistant li{margin-bottom:4px}.message-bubble.assistant h1,.message-bubble.assistant h2,.message-bubble.assistant h3{color:#fff;margin-top:10px;margin-bottom:6px;font-size:14px;font-weight:600}.message-bubble.assistant code{font-family:var(--font-mono);border:1px solid var(--border);color:#7dd3fc;background:#2a2a2a;border-radius:4px;padding:1px 5px;font-size:12px}.message-bubble.assistant pre{border:1px solid var(--border);background:#111;border-radius:6px;margin:8px 0;padding:12px;overflow-x:auto}.message-bubble.assistant pre code{color:#a8d8a8;background:0 0;border:none;padding:0;font-size:12px}.message-input-wrapper{border-top:1px solid var(--border);background:var(--surface);padding:14px 28px 20px}.message-input-row{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);align-items:center;gap:10px;padding:8px 8px 8px 14px;transition:border-color .2s;display:flex}.message-input-row:focus-within{border-color:var(--accent)}.message-input-field{color:var(--text);caret-color:var(--accent);background:0 0;border:none;outline:none;flex:1;padding:5px 0;font-family:inherit;font-size:14px}.message-input-field::placeholder{color:var(--text-muted)}.message-send-btn{cursor:pointer;white-space:nowrap;font-size:13px;font-weight:500;font-family:var(--font-mono);letter-spacing:.02em;border:none;border-radius:7px;padding:7px 16px;transition:background .2s}.message-send-btn.active{background:var(--accent);color:#fff}.message-send-btn.active:hover{background:var(--accent-hover)}.message-send-btn.inactive{background:var(--surface-2);color:var(--text-muted);cursor:not-allowed;border:1px solid var(--border)}.message-input-hint{color:var(--text-muted);text-align:center;font-size:11px;font-family:var(--font-mono);margin-top:7px}@media (width<=600px){.app-container{border-inline:none;max-width:100%}.summary-panel{padding:14px 16px}.summary-scroll{max-height:120px}.message-list{gap:10px;padding:16px}.message-bubble{max-width:88%;font-size:13px}.message-input-wrapper{padding:10px 16px 16px}.message-input-field{font-size:16px}.header-filename{max-width:140px}.upload-inner{padding:0 8px}.upload-title{font-size:22px}.upload-dropzone{padding:36px 20px}.modal-actions{flex-direction:column}.modal-btn{flex:unset;width:100%}}