:root{--color-bg: #f8fafc;--color-surface: #ffffff;--color-border: #e2e8f0;--color-primary: #2563eb;--color-primary-light: #dbeafe;--color-text: #1e293b;--color-text-muted: #64748b;--color-success: #16a34a;--color-warning: #d97706;--color-error: #dc2626;--color-chat-user: #eff6ff;--color-chat-ai: #f8fafc;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);--font-sans: "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);font-size:14px}#root{height:100vh;display:flex;flex-direction:column}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.main-content{display:flex;flex:1;overflow:hidden}.panel{flex:1;overflow:hidden;display:flex;flex-direction:column}.panel-separator{width:2px;background:var(--color-border);flex-shrink:0}.toolbar{display:flex;align-items:center;gap:12px;padding:8px 16px;background:var(--color-surface);border-bottom:1px solid var(--color-border);flex-shrink:0;z-index:10}.toolbar-left{display:flex;gap:8px;align-items:center}.toolbar-center{flex:1;text-align:center}.toolbar-right{display:flex;gap:8px;align-items:center}.app-title{font-size:15px;font-weight:700;color:var(--color-primary);white-space:nowrap}.toolbar-btn{padding:6px 12px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);cursor:pointer;font-size:13px;color:var(--color-text);transition:background .15s}.toolbar-btn:hover{background:var(--color-primary-light)}.toolbar-btn:disabled{opacity:.4;cursor:not-allowed}.toolbar-btn.primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.toolbar-btn.primary:hover{background:#1d4ed8}.session-selector,.export-menu{position:relative}.session-dropdown,.export-dropdown{position:absolute;top:100%;left:0;margin-top:4px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);width:300px;max-height:300px;overflow-y:auto;z-index:100}.export-dropdown{width:220px}.session-item{display:flex;align-items:center;padding:8px 12px;border-bottom:1px solid var(--color-border);gap:8px;cursor:pointer}.session-item:last-child{border-bottom:none}.session-item:hover,.session-item.active{background:var(--color-primary-light)}.session-item-title{flex:1;font-size:13px}.session-item-meta{font-size:11px;color:var(--color-text-muted);white-space:nowrap}.session-delete-btn{background:none;border:none;cursor:pointer;font-size:12px;opacity:.5}.session-delete-btn:hover{opacity:1;color:var(--color-error)}.export-option{display:block;width:100%;padding:10px 14px;border:none;background:none;text-align:left;cursor:pointer;font-size:13px;border-bottom:1px solid var(--color-border)}.export-option:last-child{border-bottom:none}.export-option:hover{background:var(--color-primary-light)}.dropdown-empty{padding:12px;color:var(--color-text-muted);text-align:center;font-size:13px}.chat-panel-container{border-right:none}.chat-panel{display:flex;flex-direction:column;height:100%;background:var(--color-surface)}.mode-badge{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--color-primary-light);border-bottom:1px solid var(--color-border);flex-shrink:0}.mode-indicator{font-size:13px;font-weight:700;color:var(--color-primary);padding:2px 10px;border-radius:12px;background:var(--color-surface);border:1px solid var(--color-primary)}.mode-desc{font-size:12px;color:var(--color-text-muted)}.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.message{max-width:90%;padding:10px 14px;border-radius:var(--radius);animation:fadeIn .2s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.message.user{background:var(--color-chat-user);border:1px solid #bfdbfe;align-self:flex-end}.message.assistant{background:var(--color-chat-ai);border:1px solid var(--color-border);align-self:flex-start}.message-role{font-size:11px;font-weight:600;margin-bottom:4px;color:var(--color-text-muted)}.message-mode{font-size:10px;color:var(--color-primary);margin-left:6px}.message-content{font-size:13px;line-height:1.5;white-space:pre-wrap;word-break:break-word}.cursor-blink{animation:blink 1s step-end infinite;color:var(--color-primary)}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.chat-input-area{padding:12px 16px;border-top:1px solid var(--color-border);background:var(--color-surface);flex-shrink:0}.chat-input-row{display:flex;gap:8px}.chat-input{flex:1;padding:10px 14px;border:1px solid var(--color-border);border-radius:20px;font-size:13px;font-family:var(--font-sans);outline:none;transition:border-color .15s}.chat-input:focus{border-color:var(--color-primary)}.chat-input:disabled{background:var(--color-bg)}.send-button{width:40px;height:40px;border:none;border-radius:50%;background:var(--color-primary);color:#fff;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s}.send-button:hover:not(:disabled){background:#1d4ed8}.send-button:disabled{opacity:.4;cursor:not-allowed}.slash-suggestions{margin-bottom:8px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);max-height:180px;overflow-y:auto}.suggestion-item{display:block;width:100%;padding:8px 12px;border:none;background:none;text-align:left;cursor:pointer;font-size:12px;border-bottom:1px solid var(--color-border);font-family:var(--font-sans)}.suggestion-item:last-child{border-bottom:none}.suggestion-item:hover{background:var(--color-primary-light)}.error-banner{padding:8px 16px;background:#fef2f2;color:var(--color-error);font-size:12px;border-top:1px solid #fecaca}.document-panel-container{background:var(--color-bg)}.document-panel{height:100%;overflow-y:auto;padding:20px}.document-title{font-size:18px;font-weight:700;color:var(--color-text);margin-bottom:8px}.document-meta{font-size:12px;color:var(--color-text-muted);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--color-border)}.status-badge{padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600}.status-badge.exploring{background:#fef3c7;color:#92400e}.status-badge.completed{background:#dcfce7;color:#166534}.document-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:12px;color:var(--color-text-muted)}.document-empty h2{font-size:20px;color:var(--color-border)}.document-section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px;transition:border-color .15s}.document-section:hover{border-color:#93c5fd}.document-section.empty{opacity:.6}.section-title{font-size:13px;font-weight:700;color:var(--color-text);margin-bottom:8px;display:flex;align-items:center;gap:6px}.section-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}.dot-filled{background:var(--color-success)}.dot-empty{background:var(--color-border)}.section-content{min-height:20px}.placeholder{color:var(--color-text-muted);font-size:12px;font-style:italic}.section-text{font-size:13px;line-height:1.6;white-space:pre-wrap;word-break:break-word;padding:4px;border-radius:4px;transition:background .15s;cursor:pointer}.section-text:hover{background:var(--color-primary-light)}.section-editor{width:100%;padding:8px;border:1px solid var(--color-primary);border-radius:4px;font-size:13px;font-family:var(--font-sans);line-height:1.6;resize:vertical;outline:none}.idea-cards{display:flex;flex-direction:column;gap:8px}.idea-card{background:var(--color-primary-light);border:1px solid #bfdbfe;border-radius:var(--radius);padding:10px 12px}.idea-card-header{display:flex;align-items:center;gap:6px;margin-bottom:4px}.idea-number{font-size:11px;font-weight:700;color:var(--color-primary);background:var(--color-surface);padding:1px 6px;border-radius:8px}.idea-card-header strong{font-size:13px;color:var(--color-text)}.idea-card-body{font-size:12px}.idea-card-body p{margin-bottom:6px;line-height:1.5}.idea-card-meta{display:flex;gap:6px;flex-wrap:wrap}.tag{font-size:10px;padding:2px 8px;border-radius:10px;background:var(--color-surface);border:1px solid var(--color-border)}.tag.source{color:#7c3aed}.tag.formulation{color:#059669}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}@media (max-width: 768px){.main-content{flex-direction:column}.panel-separator{width:100%;height:2px}.toolbar{flex-wrap:wrap}.toolbar-center{order:-1;width:100%;text-align:left}}