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:root{--bg-primary:#fff8f6;--bg-secondary:#fff;--bg-sidebar:#fff0ed;--accent:#e8736c;--accent-hover:#d45a52;--accent-light:#ffeae8;--text-primary:#3d2c29;--text-secondary:#7a6562;--text-muted:#b09a97;--border:#f0ddd9;--msg-user:#e8736c;--msg-user-text:#fff;--msg-ai:#fff;--msg-ai-text:#3d2c29;--shadow:0 2px 12px #3d2c2914;--radius:16px;--radius-sm:10px;--sidebar-width:280px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);height:100dvh;font-family:Nunito,sans-serif;overflow:hidden}button,input,textarea{font:inherit}button{color:inherit}button:focus-visible,a:focus-visible{outline:2px solid var(--accent-hover);outline-offset:3px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.startup-screen{justify-content:center;align-items:center}.text-button{color:var(--accent);cursor:pointer;background:0 0;border:0;font-weight:600}.composer-status{color:var(--text-secondary);background:var(--bg-secondary);padding:8px 24px;font-size:13px}.attachment-error{margin-bottom:8px;font-size:13px;display:block}.screen{height:100dvh;display:none}.screen.active{display:flex}.hidden{display:none!important}#auth-screen{background:linear-gradient(135deg, var(--bg-primary) 0%, var(--accent-light) 100%);justify-content:center;align-items:center;overflow-y:auto}.auth-container{background:var(--bg-secondary);border-radius:var(--radius);box-shadow:var(--shadow);width:100%;max-width:400px;margin:auto 16px;padding:48px 40px}.logo{text-align:center;margin-bottom:32px}.logo-icon{margin-bottom:8px;font-size:48px;display:block}.logo h1{color:var(--accent);font-size:28px;font-weight:700}.logo p{color:var(--text-secondary);margin-top:4px;font-size:14px}.auth-form h2{text-align:center;margin-bottom:20px;font-size:20px}.auth-form input{border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-primary);width:100%;margin-bottom:12px;padding:14px 16px;font-family:inherit;font-size:15px;transition:border-color .2s}.auth-form input:focus{border-color:var(--accent);outline:none}.btn-primary{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;width:100%;padding:14px;font-family:inherit;font-size:16px;font-weight:700;transition:background .2s}.btn-primary:hover{background:var(--accent-hover)}.switch-auth{text-align:center;color:var(--text-secondary);margin-top:16px;font-size:14px}.switch-auth a{color:var(--accent);font-weight:600;text-decoration:none}.error-msg{color:#d45a52;text-align:center;min-height:20px;margin-top:12px;font-size:14px}#app-screen{display:none}#app-screen.active{display:flex}.sidebar{width:var(--sidebar-width);background:var(--bg-sidebar);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;transition:transform .3s;display:flex}.sidebar-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px;display:flex}.logo-small{color:var(--accent);align-items:center;gap:6px;font-size:18px;font-weight:700;display:flex}.btn-new-chat{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:20px;padding:8px 14px;font-family:inherit;font-size:13px;font-weight:700;transition:background .2s}.btn-new-chat:hover{background:var(--accent-hover)}.chat-list{flex:1;padding:12px;overflow-y:auto}.chat-item{text-align:left;border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;text-overflow:ellipsis;width:100%;color:var(--text-primary);background:0 0;border:none;margin-bottom:4px;padding:14px 16px;font-family:inherit;font-size:14px;transition:background .15s;display:block;overflow:hidden}.chat-item:hover{background:#e8736c1a}.chat-item.active{background:var(--accent);color:#fff}.loading-chats{text-align:center;color:var(--text-muted);padding:20px;font-size:13px}.sidebar-footer{border-top:1px solid var(--border);padding:16px 20px}.user-info{justify-content:space-between;align-items:center;display:flex}.creator-credit{color:var(--text-muted);text-align:center;margin-top:12px;font-size:12px}.creator-credit a{color:var(--accent);font-weight:700;text-decoration:none}.creator-credit a:hover{text-decoration:underline}.user-info span{font-size:14px;font-weight:600}.user-info button{cursor:pointer;opacity:.6;background:0 0;border:none;font-size:18px;transition:opacity .2s}.user-info button:hover{opacity:1}.chat-area{background:var(--bg-primary);flex-direction:column;flex:1;min-width:0;display:flex}.chat-header{background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-shrink:0;align-items:center;gap:12px;padding:16px 24px;display:flex}.chat-header h2{white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:18px;overflow:hidden}.menu-toggle{cursor:pointer;color:var(--text-primary);background:0 0;border:none;font-size:24px;display:none}.btn-icon{cursor:pointer;opacity:.6;background:0 0;border:none;padding:4px;font-size:20px;transition:opacity .2s}.btn-icon:hover{opacity:1}.messages-container{flex-direction:column;flex:1;gap:16px;min-height:0;padding:24px;display:flex;overflow-y:auto}.welcome-message{text-align:center;color:var(--text-secondary);padding:60px 20px}.welcome-avatar{margin-bottom:16px;font-size:56px}.welcome-message h3{color:var(--text-primary);margin-bottom:8px;font-size:22px}.welcome-message p{max-width:400px;margin:0 auto;font-size:15px;line-height:1.5}.message{border-radius:var(--radius);word-wrap:break-word;flex-shrink:0;max-width:75%;padding:14px 18px;font-size:15px;line-height:1.55;position:relative}.message-content{white-space:pre-wrap;overflow-wrap:anywhere}.message-content.markdown-body{white-space:normal}.markdown-body p,.markdown-body li{white-space:pre-line}.markdown-body p,.markdown-body ul,.markdown-body ol,.markdown-body blockquote,.markdown-body pre,.markdown-body table{margin:0 0 .8em}.markdown-body>:last-child{margin-bottom:0}.markdown-body strong{font-weight:700}.markdown-body em{font-style:italic}.markdown-body ul,.markdown-body ol{padding-left:1.5em}.markdown-body li+li{margin-top:.3em}.markdown-body li>p{margin-bottom:.4em}.markdown-body li>ul,.markdown-body li>ol{margin-top:.3em;margin-bottom:0}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{margin:1em 0 .5em;font-size:1.05em;line-height:1.4}.markdown-body h1{font-size:1.3em}.markdown-body h2{font-size:1.15em}.markdown-body>:first-child{margin-top:0}.markdown-body blockquote{border-left:3px solid var(--accent);color:var(--text-secondary);padding:.1em 0 .1em .9em}.markdown-body blockquote>:last-child{margin-bottom:0}.markdown-body a{color:var(--accent-hover);text-decoration:underline}.markdown-body a:hover{color:var(--text-primary)}.markdown-body code{background:var(--bg-sidebar);border-radius:4px;padding:.1em .3em;font-family:Consolas,monospace;font-size:.9em}.markdown-body pre{white-space:pre;border-radius:var(--radius-sm);background:var(--bg-primary);border:1px solid var(--border);max-width:100%;padding:12px;overflow-x:auto}.markdown-body pre code{overflow-wrap:normal;background:0 0;padding:0}.markdown-body table{border-collapse:collapse;max-width:100%;display:block;overflow-x:auto}.markdown-body th,.markdown-body td{border:1px solid var(--border);text-align:left;padding:.4em .7em}.markdown-body th{background:var(--bg-sidebar)}.markdown-body hr{border:0;border-top:1px solid var(--border);margin:1em 0}.app-error{background:var(--accent-light);color:#943c36;flex-shrink:0;padding:12px 24px;font-size:14px}button:disabled{cursor:not-allowed;opacity:.6}.loading-chats button{margin:12px auto 0;display:block}.message.user{background:var(--msg-user);color:var(--msg-user-text);border-bottom-right-radius:4px;align-self:flex-end}.message.assistant{background:var(--msg-ai);color:var(--msg-ai-text);box-shadow:var(--shadow);border-bottom-left-radius:4px;align-self:flex-start}.message img{object-fit:contain;border-radius:var(--radius-sm);max-width:100%;max-height:480px;margin-bottom:8px;display:block}.message.loading{background:var(--msg-ai);box-shadow:var(--shadow);border-bottom-left-radius:4px;align-self:flex-start}.typing-dots{gap:4px;padding:4px 0;display:flex}.typing-dots span{background:var(--text-muted);border-radius:50%;width:8px;height:8px;animation:1.4s ease-in-out infinite both bounce}.typing-dots span:first-child{animation-delay:-.32s}.typing-dots span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.message-input-area{background:var(--bg-secondary);border-top:1px solid var(--border);flex-shrink:0;align-items:flex-end;gap:10px;padding:16px 24px;display:flex;position:relative}.image-preview{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow);max-width:200px;padding:8px;position:absolute;bottom:100%;left:24px}.image-preview img{border-radius:6px;max-width:100%;max-height:120px;display:block}.remove-preview{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:14px;display:flex;position:absolute;top:-8px;right:-8px}.attach-btn{flex-shrink:0;font-size:22px}#message-input{border:2px solid var(--border);resize:none;background:var(--bg-primary);border-radius:24px;flex:1;min-width:0;min-height:46px;max-height:120px;padding:12px 16px;font-family:inherit;font-size:15px;line-height:1.4;transition:border-color .2s}#message-input:focus{border-color:var(--accent);outline:none}.btn-send{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:46px;height:46px;font-size:20px;transition:background .2s,opacity .2s;display:flex}.btn-send:disabled{opacity:.4;cursor:not-allowed}.btn-send:not(:disabled):hover{background:var(--accent-hover)}.sidebar-overlay{z-index:9;background:#0000004d;border:0;display:none;position:fixed;inset:0}@media (max-width:768px){.sidebar{z-index:10;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar.open+.sidebar-overlay,.menu-toggle{display:block}.messages-container{padding:16px}.message-input-area{padding:12px 16px}.message{max-width:88%}.auth-container{padding:32px 24px}.message-input-area{padding-bottom:max(12px, env(safe-area-inset-bottom))}.sidebar{width:min(var(--sidebar-width), 85vw)}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}