:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a25;--bg-hover: #22222f;--bg-active: #2a2a3a;--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--border-color: rgba(148, 163, 184, .1);--border-hover: rgba(148, 163, 184, .2);--user-bubble: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--assistant-bubble: #1e1e2e;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .5);--sidebar-width: 280px;--transition-fast: .15s ease;--transition-normal: .25s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow:hidden}.app{display:flex;height:100vh;width:100vw}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{padding:20px;border-bottom:1px solid var(--border-color)}.sidebar-title{font-size:1.25rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:16px}.new-chat-btn{width:100%;padding:12px 16px;background:var(--accent-gradient);border:none;border-radius:10px;color:#fff;font-weight:600;font-size:.9rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all var(--transition-fast);box-shadow:var(--shadow-md)}.new-chat-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.new-chat-btn:active{transform:translateY(0)}.thread-list{flex:1;overflow-y:auto;padding:12px}.thread-list::-webkit-scrollbar{width:6px}.thread-list::-webkit-scrollbar-track{background:transparent}.thread-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.thread-item{padding:12px 16px;border-radius:10px;cursor:pointer;margin-bottom:4px;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:space-between;group:relative}.thread-item:hover{background:var(--bg-hover)}.thread-item.active{background:var(--bg-active);border:1px solid var(--border-hover)}.thread-title{font-size:.875rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.thread-item.active .thread-title{color:var(--text-primary)}.thread-delete-btn{opacity:0;background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;transition:all var(--transition-fast)}.thread-item:hover .thread-delete-btn{opacity:1}.thread-delete-btn:hover{color:#ef4444;background:#ef44441a}.main-content{flex:1;display:flex;flex-direction:column;background:var(--bg-primary);min-width:0}.chat-header{padding:16px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.chat-header h2{font-size:1rem;font-weight:600;color:var(--text-primary)}.messages-container{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.messages-container::-webkit-scrollbar{width:8px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.message{display:flex;gap:12px;max-width:80%;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.user{align-self:flex-end;flex-direction:row-reverse}.message.assistant{align-self:flex-start}.message-avatar{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}.message.user .message-avatar{background:var(--accent-gradient)}.message.assistant .message-avatar{background:var(--bg-tertiary);border:1px solid var(--border-color)}.message-content{padding:14px 18px;border-radius:16px;font-size:.9rem;line-height:1.6}.message.user .message-content{background:var(--user-bubble);color:#fff;border-bottom-right-radius:4px}.message.assistant .message-content{background:var(--assistant-bubble);color:var(--text-primary);border-bottom-left-radius:4px;border:1px solid var(--border-color)}.message-content p{margin-bottom:8px}.message-content p:last-child{margin-bottom:0}.message-content code{background:#0000004d;padding:2px 6px;border-radius:4px;font-family:Fira Code,Consolas,monospace;font-size:.85em}.message-content pre{background:#0006;padding:12px;border-radius:8px;overflow-x:auto;margin:8px 0}.message-content pre code{background:none;padding:0}.typing-indicator{display:flex;gap:4px;padding:8px 0}.typing-indicator span{width:8px;height:8px;background:var(--accent-primary);border-radius:50%;animation:bounce 1.4s infinite ease-in-out both}.typing-indicator span:nth-child(1){animation-delay:-.32s}.typing-indicator span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.input-area{padding:20px 24px;border-top:1px solid var(--border-color);background:var(--bg-secondary)}.input-wrapper{display:flex;gap:12px;align-items:flex-end}.input-container{flex:1;display:flex;flex-direction:column;gap:8px}.model-selector{display:flex;align-items:center;gap:8px}.model-selector label{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.model-selector select{background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);padding:6px 12px;border-radius:6px;font-size:.8rem;cursor:pointer;outline:none;transition:all var(--transition-fast)}.model-selector select:hover{border-color:var(--border-hover)}.model-selector select:focus{border-color:var(--accent-primary)}.message-input{width:100%;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:12px;padding:14px 18px;color:var(--text-primary);font-size:.95rem;resize:none;outline:none;min-height:52px;max-height:200px;transition:all var(--transition-fast);font-family:inherit}.message-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f11a}.message-input::placeholder{color:var(--text-muted)}.send-btn{background:var(--accent-gradient);border:none;border-radius:12px;width:52px;height:52px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-md)}.send-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.send-btn svg{width:20px;height:20px;fill:#fff}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-muted);padding:40px;text-align:center}.empty-state-icon{font-size:4rem;margin-bottom:20px;opacity:.5}.empty-state h3{font-size:1.25rem;color:var(--text-secondary);margin-bottom:8px}.empty-state p{font-size:.9rem;max-width:400px}.error-message{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:#fca5a5;padding:12px 16px;border-radius:8px;font-size:.875rem;margin:16px 24px}@media(max-width:768px){.sidebar{position:fixed;left:-100%;top:0;height:100%;z-index:100;transition:left var(--transition-normal)}.sidebar.open{left:0}.message{max-width:90%}}.loading-badge{display:inline-block;background:var(--accent-gradient);color:#fff;font-size:.7rem;padding:2px 8px;border-radius:12px;margin-left:10px;animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.pending-content{min-width:350px}.pending-info{margin-top:12px;font-size:.8rem;color:var(--text-secondary)}.pending-info p{margin-bottom:4px!important}.pending-info strong{color:var(--accent-primary)}.payload-details{margin-top:10px;border:1px solid var(--border-color);border-radius:8px;overflow:hidden}.payload-details summary{padding:8px 12px;background:var(--bg-tertiary);cursor:pointer;font-size:.75rem;color:var(--text-muted);-webkit-user-select:none;user-select:none;transition:background var(--transition-fast)}.payload-details summary:hover{background:var(--bg-hover)}.payload-details[open] summary{border-bottom:1px solid var(--border-color)}.payload-details pre{margin:0!important;padding:12px;background:#0000004d;font-size:.7rem;max-height:200px;overflow:auto;color:var(--text-secondary)}.search-container{padding:12px 16px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.search-input-wrapper{position:relative;display:flex;align-items:center}.search-icon{position:absolute;left:10px;color:var(--text-muted);pointer-events:none}.search-input{width:100%;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;padding:8px 30px 8px 34px;color:var(--text-primary);font-size:.85rem;outline:none;transition:all var(--transition-fast)}.search-input:focus{border-color:var(--accent-primary);background:var(--bg-primary)}.search-clear-btn{position:absolute;right:8px;background:none;border:none;color:var(--text-muted);cursor:pointer;padding:2px 6px;font-size:.8rem;border-radius:50%}.search-clear-btn:hover{background:#ffffff1a;color:var(--text-primary)}.search-btn{width:100%;margin-top:8px;padding:6px;background:#6366f11a;border:1px solid rgba(99,102,241,.2);color:var(--accent-primary);border-radius:6px;font-size:.75rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.search-btn:hover{background:#6366f133}.search-results{position:absolute;top:60px;left:10px;width:320px;max-height:400px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;z-index:100;overflow:hidden}.search-results-header{padding:12px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;font-size:.8rem;font-weight:600;color:var(--text-secondary)}.search-results-header button{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px}.search-results-list{overflow-y:auto;padding:8px}.search-result-item{padding:10px;border-radius:8px;cursor:pointer;margin-bottom:4px;transition:background var(--transition-fast)}.search-result-item:hover{background:var(--bg-hover)}.search-result-thread{font-size:.75rem;color:var(--accent-secondary);font-weight:500;margin-bottom:2px}.search-result-role{display:inline-block;font-size:.65rem;text-transform:uppercase;background:#94a3b81a;padding:1px 4px;border-radius:4px;color:var(--text-muted);margin-bottom:4px}.search-result-preview{font-size:.8rem;color:var(--text-secondary);line-height:1.4}.search-result-preview strong{color:var(--accent-primary);font-weight:600}.no-results{padding:20px;text-align:center;color:var(--text-muted);font-size:.85rem}.message-meta,.message-meta-user{font-size:.75rem;color:var(--text-muted);margin-top:8px;display:block}.message-meta-user{font-size:.7rem;margin-top:4px}.message-content h1,.message-content h2,.message-content h3{margin-top:16px;margin-bottom:8px;font-weight:600;color:inherit}.message-content h1{font-size:1.4em}.message-content h2{font-size:1.2em}.message-content h3{font-size:1.1em}.message-content ul,.message-content ol{margin-left:20px;margin-bottom:12px}.message-content li{margin-bottom:4px}.message-content a{color:var(--accent-primary);text-decoration:none}.message-content a:hover{text-decoration:underline}.message-content blockquote{border-left:3px solid var(--accent-secondary);padding-left:12px;margin:12px 0;color:var(--text-muted);opacity:.9}.message-content table{border-collapse:collapse;width:100%;margin:12px 0;font-size:.85em}.message-content th,.message-content td{border:1px solid var(--border-color);padding:8px;text-align:left}.message-content th{background:#0003}.message-content th .code-block-container{margin:12px 0;border-radius:8px;overflow:hidden;border:1px solid var(--border-color);background:#282c34!important;box-shadow:0 4px 6px #0003}.message-content th .code-block-header{display:flex;justify-content:space-between;align-items:center;padding:6px 12px;background:#0000004d;border-bottom:1px solid rgba(255,255,255,.1);font-family:sans-serif}.message-content th .code-language{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;font-weight:600;letter-spacing:.5px}.message-content th .copy-code-btn{display:flex;align-items:center;gap:6px;background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:.75rem;padding:4px 8px;border-radius:4px;transition:all var(--transition-fast)}.message-content th .copy-code-btn:hover{background:#ffffff1a;color:var(--text-primary)}.message-content th .copy-code-btn svg{opacity:.8}.message-content th .message-content{position:relative}.message-content th .message-actions{position:absolute;top:-12px;right:-12px;opacity:0;transition:opacity var(--transition-fast);z-index:10}.message-content th .message:hover .message-actions{opacity:1}.message-content th .message-copy-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-muted);cursor:pointer;padding:6px;border-radius:8px;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);box-shadow:0 2px 4px #0003}.message-content th .message-copy-btn:hover{background:var(--bg-hover);color:var(--accent-primary);transform:translateY(-2px);border-color:var(--accent-primary)}.message-content th .message-copy-btn:active{transform:translateY(0)}