*,*:before,*:after{box-sizing:border-box}*{margin:0}@media (prefers-reduced-motion: no-preference){html{interpolate-size:allow-keywords}}body{line-height:1.5;-webkit-font-smoothing:antialiased}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}p,h1,h2,h3,h4,h5,h6{overflow-wrap:break-word}p{text-wrap:pretty;margin:0;padding:0}ul,ol{margin:0;padding:0;list-style-position:outside}li{margin:0;padding:0}h1,h2,h3,h4,h5,h6{text-wrap:balance}.app{isolation:isolate}:root{--bg-primary: #fff;--bg-secondary: #f5f5f5;--bg-tertiary: #e8e8e8;--text-primary: #0d0d0d;--text-secondary: #666666;--accent: #0070f3;--accent-hover: #0051cc;--border: #e0e0e0;--error: #ff3333;--message-user-bg: #e9e9e980;--input-container-bg: #fff;--input-row-bg: #fff;--file-upload-icon: #666;--send-btn-bg: #000;--send-btn-disabled: #ccc;--send-btn-icon: #ffffff;--model-selector-border: #e0e0e0}:root.dark{--bg-primary: #101012;--bg-secondary: #000;--bg-tertiary: #2b2b2b;--text-primary: #ffffff;--text-secondary: #aaaaaa;--accent: #0070f3;--accent-hover: #0051cc;--border: #404040;--error: #ff6666;--message-user-bg: #3a3a3a;--input-container-bg: #1a1a1a;--input-row-bg: #1a1a1a;--file-upload-icon: #aaaaaa;--send-btn-bg: #ffffff;--send-btn-disabled: #666666;--send-btn-icon: #000000;--model-selector-border: #404040}@media (prefers-color-scheme: dark){:root:not(.dark):not(.light){--bg-primary: #000;--bg-secondary: #000;--bg-tertiary: #2b2b2b;--text-primary: #ffffff;--text-secondary: #aaaaaa;--accent: #0070f3;--accent-hover: #0051cc;--border: #404040;--error: #ff6666;--message-user-bg: #3a3a3a;--input-container-bg: #000;--input-row-bg: #000;--file-upload-icon: #aaaaaa;--send-btn-bg: #ffffff;--send-btn-disabled: #666666;--send-btn-icon: #000000;--model-selector-border: #404040}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6}button{font-family:inherit;font-size:14px;padding:10px 20px;background:var(--accent);color:#fff;border:none;border-radius:6px;cursor:pointer;transition:background .2s}button:disabled{opacity:.6;cursor:not-allowed}input,textarea,select{font-family:inherit;font-size:14px;padding:10px;border:1px solid var(--border);border-radius:6px;background:var(--bg-primary);color:var(--text-primary)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent)}.app{min-height:100vh;display:flex;flex-direction:column}.loading,.auth-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:20px}.chat-wrapper{display:flex;flex-direction:column;height:100vh;overflow:hidden;position:relative}@media (max-width: 767px){.chat-wrapper{height:100vh;height:100dvh;overflow:hidden;position:fixed;top:0;left:0;right:0;bottom:0;width:100%}}.main-content{display:flex;flex:1;overflow:hidden;position:relative;min-height:0}@media (max-width: 767px){.main-content{width:100%;height:100%;overflow:hidden;flex:1 1 auto;min-height:0}}.chat-interface-wrapper{position:relative;flex:1;display:flex;flex-direction:column;overflow:hidden;min-height:0}.sync-status-container{position:fixed;bottom:16px;right:16px;z-index:1000}.header-bar{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;background:var(--bg-secondary);border-bottom:1px solid var(--border);gap:12px}.header-bar h1{font-size:1.25rem;margin:0;flex:1}.logo-container{display:flex;align-items:center;flex:1}.logo-container svg{display:block;height:15px;width:auto}.hamburger-btn{display:flex;align-items:center;justify-content:center;padding:8px;min-width:44px;min-height:44px;background:transparent;border:none;cursor:pointer;color:var(--text-primary);border-radius:6px;transition:background .2s;flex-shrink:0}.hamburger-btn:hover{background:var(--bg-tertiary)}.hamburger-btn svg{width:25px;height:20px;display:block}.sign-out-btn{width:100%;padding:10px 16px;font-size:14px;background:var(--bg-tertiary)}.sign-out-btn:hover{background:var(--error)}.chat-container{display:flex;flex-direction:column;flex:1;max-width:1200px;margin:0 auto;width:100%;overflow:hidden;position:relative;height:100%;min-height:0}@media (max-width: 767px){.chat-container{height:100vh;max-height:100vh;display:flex;flex-direction:column}}.sidebar-toggle-floating{position:fixed;left:10px;top:29px;transform:translateY(-50%);z-index:1000;display:flex;align-items:center;justify-content:center;padding:12px 8px;min-width:44px;min-height:44px;background:var(--bg-secondary);border:none;border-right:1px solid var(--border);border-top-right-radius:8px;border-bottom-right-radius:8px;cursor:pointer;color:var(--text-primary);transition:all .2s;box-shadow:2px 0 8px #0000001a}.sidebar-toggle-floating:hover{background:var(--bg-tertiary);box-shadow:2px 0 12px #00000026}.sidebar-toggle-floating svg{width:25px;height:20px;display:block}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid var(--border);background:var(--bg-secondary)}.chat-header h1{font-size:1.25rem;margin:0}.model-select{padding:8px 12px;min-width:200px}.messages-container{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px;position:relative;min-height:0}@media (max-width: 767px){.messages-container{flex:1 1 auto;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;padding-bottom:10px}}.virtual-spacer{flex-shrink:0;width:100%}.empty-chat{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-secondary);font-size:16px;text-align:center}.loading-spinner{display:flex;flex-direction:column;align-items:center;gap:16px}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-spinner p{margin:0;color:var(--text-secondary);font-size:14px}.message{display:flex;max-width:80%;animation:fadeIn .3s ease-in}@media (max-width: 767px){.message{max-width:90%;min-width:0}}.message-user{align-self:flex-end}.message-assistant{align-self:flex-start}.message-content{padding:12px 16px;border-radius:29px;word-wrap:break-word;overflow-wrap:break-word;word-break:break-word;line-height:1.5;display:flex;flex-direction:column;max-width:100%;overflow-x:hidden;overflow-y:visible}.message-user.message-content,.message-user.message-text{white-space:pre-wrap}.message-assistant,.message-text{white-space:normal}@media (max-width: 767px){.message-content{min-width:0;overflow:hidden}}.message-text{word-wrap:break-word;overflow-wrap:break-word;word-break:break-word;margin-bottom:0;max-width:100%;overflow-x:hidden;overflow-y:visible}@media (max-width: 767px){.message-text{min-width:0;overflow:hidden}}.message-text:last-child{margin-bottom:0}.copy-markdown-btn{align-self:flex-start;padding:6px;min-width:auto;width:28px;height:28px;background:transparent;border:none;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .2s ease,background-color .2s ease}.copy-markdown-btn svg{width:16px;height:16px;display:block;flex-shrink:0}.copy-markdown-btn svg path{fill:var(--file-upload-icon);transition:fill .2s ease}:root.dark .copy-markdown-btn svg path{fill:#fff}.copy-markdown-btn.copied svg path{fill:var(--file-upload-icon)}:root.dark .copy-markdown-btn.copied svg path{fill:#fff}.message-assistant:hover .copy-markdown-btn,.message-assistant:hover .copy-markdown-btn.copied{opacity:.6}.message-assistant:hover .copy-markdown-btn:hover,.message-assistant:hover .copy-markdown-btn.copied:hover{opacity:1;background:var(--bg-tertiary)}.copy-markdown-btn:active{opacity:.8;transform:scale(.95)}.message-actions{display:flex;align-items:center;gap:8px}.memory-updated-indicator{display:flex;align-items:center;gap:6px;border-radius:6px;opacity:1;font-weight:500}.memory-updated-indicator svg{width:16px;height:16px;flex-shrink:0}.memory-updated-indicator svg path{fill:var(--file-upload-icon);transition:fill .2s ease}:root.dark .memory-updated-indicator svg path{fill:#fff}.memory-updated-text{font-size:12px;color:var(--text-secondary);white-space:nowrap}:root.dark .memory-updated-text{color:var(--text-secondary)}.thinking-state.skeleton-message{display:flex;flex-direction:column;gap:8px;padding:12px 0}.skeleton-line{height:16px;background:linear-gradient(90deg,var(--skeleton-bg, rgba(0, 0, 0, .1)) 0%,var(--skeleton-shine, rgba(0, 0, 0, .15)) 50%,var(--skeleton-bg, rgba(0, 0, 0, .1)) 100%);background-size:200% 100%;border-radius:4px;animation:skeleton-shimmer 1.5s ease-in-out infinite}.skeleton-line-1{width:85%}.skeleton-line-2{width:95%}.skeleton-line-3{width:70%}@keyframes skeleton-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.dark .skeleton-line{background:linear-gradient(90deg,#ffffff1a,#ffffff26,#ffffff1a);background-size:200% 100%}.thinking-state{padding:8px 0;color:var(--text-secondary);font-style:italic}.thinking-text{display:inline-flex;align-items:center;gap:6px;animation:thinkingPulse 1.5s ease-in-out infinite}.globe-icon-inline{display:inline-flex;align-items:center;width:16px;height:16px}.globe-icon-inline svg{width:16px;height:16px;fill:currentColor}@keyframes thinkingPulse{0%,to{opacity:.6}50%{opacity:1}}.message-user .message-text{white-space:pre-wrap}.message-text h1,.message-text h2,.message-text h3,.message-text h4,.message-text h5,.message-text h6{margin:16px 0 8px;font-weight:600;line-height:1.3}.message-text h1{font-size:1.75rem;border-bottom:2px solid var(--border);padding-bottom:8px}.message-text h2{font-size:1.5rem;border-bottom:1px solid var(--border);padding-bottom:6px}.message-text h3{font-size:1.25rem}.message-text h4{font-size:1.1rem}.message-text h5{font-size:1rem}.message-text h6{font-size:.9rem}.message-text p{margin:.9em 0;line-height:1.55}.message-text code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-family:Monaco,Menlo,Ubuntu Mono,Consolas,source-code-pro,monospace;font-size:.9em;color:var(--text-primary)}.message-text pre{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:6px;padding:12px 16px;overflow-x:auto;overflow-y:hidden;margin:12px 0;line-height:1.5;max-width:100%;width:100%;box-sizing:border-box}.message-text pre code{background:transparent;padding:0;border-radius:0;font-size:.875rem;white-space:pre;display:block}.message-text ul,.message-text ol{padding-left:20px!important;list-style-position:outside!important}.message-text li{list-style-position:outside!important}.message-text ul{list-style-type:disc}.message-text ol{list-style-type:decimal}.message-text blockquote{border-left:4px solid var(--accent);padding-left:16px;margin:12px 0;color:var(--text-secondary);font-style:italic}.message-text a{color:var(--accent);text-decoration:none;word-break:break-all;overflow-wrap:break-word}.message-text a:hover{text-decoration:underline}.message-text table{border-collapse:collapse;width:100%;max-width:100%;margin:12px 0;table-layout:auto;overflow:hidden}@media (max-width: 767px){.message-text table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}}.message-text th,.message-text td{border:1px solid var(--border);padding:8px 12px;text-align:left}.message-text th{background:var(--bg-tertiary);font-weight:600}.message-text hr{border:none;border-top:1px solid var(--border);margin:16px 0}.message-text img{max-width:100%;width:auto;height:auto;border-radius:6px;margin:8px 0;display:block}.message-text strong{font-weight:600}.message-text em{font-style:italic}.message-attachments{display:flex;flex-direction:column;gap:6px;margin-bottom:8px;padding:8px;background:var(--bg-tertiary);border-radius:6px;min-width:0;max-width:100%;overflow:hidden}.attachment-item{display:flex;align-items:center;gap:8px;font-size:14px}.attachment-icon{font-size:16px}.attachment-name{flex:1;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-size{color:var(--text-secondary);font-size:12px;flex-shrink:0}.message-images{display:flex;flex-direction:column;gap:8px;margin-bottom:8px;min-width:0;max-width:100%;overflow:hidden}.image-wrapper{position:relative;display:block;max-width:100%;min-width:0;overflow:hidden}.generated-image{max-width:100%;height:auto;border-radius:8px;object-fit:contain;max-height:512px;background:var(--bg-tertiary);display:block}.generated-image:not([src]){display:none}.message-user .message-content{background:var(--message-user-bg)}.input-container{display:flex;flex-direction:column;gap:12px;padding:20px;border-top:1px solid var(--border);background:var(--input-container-bg);flex-shrink:0}@media (max-width: 767px){.input-container{position:sticky;bottom:0;left:0;right:0;z-index:10;padding:12px 16px;padding-bottom:max(12px,env(safe-area-inset-bottom));background:var(--input-container-bg);border-top:1px solid var(--border);box-shadow:0 -2px 10px #0000001a}}.attached-files{display:flex;flex-direction:column;gap:8px}.attached-file{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:6px;font-size:14px;transition:all .2s ease}.attached-file.is-image{flex-direction:column;align-items:flex-start;padding:8px}.attached-file.is-image .file-info{display:flex;align-items:center;gap:8px;width:100%}.attached-file.uploading{opacity:.7}.attached-file.uploaded{border-color:var(--accent)}.attached-file.error{border-color:var(--error)}.file-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-primary)}.file-size{color:var(--text-secondary);font-size:12px;flex-shrink:0}.upload-status{font-size:12px;color:var(--text-secondary);flex-shrink:0}.upload-status.uploaded{color:var(--accent)}.upload-status.error{color:var(--error)}.image-preview{width:100%;margin-bottom:8px;border-radius:4px;overflow:hidden;background:var(--bg-secondary);display:flex;align-items:center;justify-content:center;max-height:200px}.image-preview img{max-width:100%;max-height:200px;object-fit:contain;border-radius:4px;display:block}.file-info{display:flex;align-items:center;gap:8px;flex:1;min-width:0}.remove-file-btn{padding:4px 8px;min-width:auto;background:transparent;color:var(--text-secondary);font-size:18px;line-height:1;border:none;cursor:pointer;flex-shrink:0}.remove-file-btn:hover{background:var(--error);color:#fff}.input-row{position:relative;display:flex;align-items:flex-start;background:var(--input-row-bg);padding:12px 12px 37px;border-radius:12px;border:1px solid var(--border);box-shadow:0 1px 3px #0000001a;min-height:60px}.file-upload-btn{position:absolute;top:12px;left:12px;padding:6px;min-width:auto;background:transparent;border:none;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;width:auto;height:auto;z-index:1}.file-upload-btn:hover:not(:disabled){opacity:.7}.file-upload-btn:disabled{opacity:.4;cursor:not-allowed}.file-upload-btn svg{width:18px;height:18px;display:block;flex-shrink:0;color:var(--file-upload-icon)}.message-input{flex:1;resize:none;min-height:36px;max-height:200px;padding:8px 50px;border:none;border-radius:0;background:transparent;font-family:inherit;font-size:14px;line-height:1.5;width:100%}.message-input:focus{outline:none}.message-input:disabled{opacity:.6;cursor:not-allowed}.model-selector-wrapper{position:absolute;bottom:12px;left:12px;z-index:1;display:flex;align-items:center;gap:8px}.model-selector-pill{padding:4px 10px;background:transparent;border:1px solid var(--model-selector-border);border-radius:12px;font-size:12px;cursor:pointer;color:var(--text-primary);white-space:nowrap;transition:all .2s;position:relative;z-index:1;display:inline-block}.model-selector-pill:hover:not(:disabled){background:var(--bg-tertiary);border-color:var(--accent)}.model-selector-pill:disabled{opacity:.6;cursor:not-allowed}.model-selector-pill-wrapper{position:relative;display:inline-block}.model-select-native{position:absolute;opacity:0;top:0;left:0;width:100%;height:100%;cursor:pointer;z-index:2;appearance:none;-webkit-appearance:none;-moz-appearance:none}.model-select-native:disabled{cursor:not-allowed}.send-btn{position:absolute;top:12px;right:12px;padding:0;min-width:auto;background:var(--send-btn-bg);border:none;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;transition:all .2s;z-index:1}.send-btn:hover:not(:disabled){opacity:.9;transform:scale(1.05)}.send-btn:disabled{opacity:.4;cursor:not-allowed;background:var(--send-btn-disabled)}.send-btn svg{width:18px;height:18px;display:block;flex-shrink:0;color:var(--send-btn-icon)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.sidebar-overlay{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:998;opacity:0;transition:opacity .2s ease-out;pointer-events:none}.sidebar-overlay.visible{display:block;opacity:1;pointer-events:all}@media (min-width: 768px){.sidebar-overlay{display:none!important}}.sidebar{width:280px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;height:100%;overflow:hidden;position:relative;z-index:999;will-change:transform;transition:transform .2s ease-out}@media (max-width: 767px){.sidebar{position:fixed;top:0;left:0;height:100vh;transform:translate(-100%);box-shadow:2px 0 8px #0000001a}.sidebar.open{transform:translate(0)}}@media (min-width: 768px){.sidebar{position:relative;transform:translate(0);transition:transform .2s ease-out}.sidebar:not(.open){transform:translate(-100%);position:absolute;left:0;top:0;height:100%;z-index:999}}.sidebar-top{padding:15px;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:12px}.sidebar-logo-section{display:flex;align-items:center;justify-content:space-between;gap:12px}.sidebar-toggle-btn{display:flex;align-items:center;justify-content:center;padding:8px;min-width:44px;min-height:44px;background:transparent;border:none;cursor:pointer;color:var(--text-primary);border-radius:6px;transition:background .2s;flex-shrink:0}.sidebar-toggle-btn:hover{background:var(--bg-tertiary)}.sidebar-toggle-btn svg{width:25px;height:20px;display:block}.sidebar-logo{display:flex;align-items:center;flex:1;height:24px;margin-left:2px}.sidebar-logo svg{display:block;height:24px;width:auto}.sidebar-footer{padding:15px;border-top:1px solid var(--border);margin-top:auto}.new-chat-btn{width:100%;padding:12px 12px 12px 2px;font-size:13px;font-weight:500;background:transparent;color:var(--text-primary);border:none;border-radius:8px;transition:all .2s;display:flex;align-items:center;gap:8px;text-align:left;cursor:pointer}.new-chat-btn:hover:not(:disabled){background:var(--bg-tertiary)}.new-chat-btn:disabled{opacity:.6;cursor:not-allowed}.new-chat-icon{display:flex;align-items:center;justify-content:center;flex-shrink:0}.new-chat-icon svg{width:18px;height:18px;display:block}.new-chat-text{flex:1;text-align:left}.chats-list{flex:1;overflow-y:auto;padding:10px}.chats-list .loading,.chats-list .empty-state{padding:20px;text-align:center;color:var(--text-secondary);font-size:14px;min-height:auto}.chat-item{display:flex;align-items:center;width:100%;margin-bottom:4px;background:transparent;border-radius:8px;transition:all .2s;position:relative}.chat-item:hover{background:var(--bg-tertiary)}.chat-item:hover .delete-btn{opacity:1}.chat-item.active{background:#fff;box-shadow:0 1px 3px #3a3a3a26;border-radius:8px}.dark .chat-item.active{background:#3b3b3b}.chat-item.deleting{opacity:.5;pointer-events:none}.chat-item-button{flex:1;padding:8px;text-align:left;background:transparent;border:none;cursor:pointer;color:inherit;font-family:inherit}.chat-info{flex:1;min-width:0}.chat-name{font-size:13px;font-weight:500;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-date{font-size:12px;color:var(--text-secondary)}.delete-btn{padding:8px 12px;background:transparent;border:none;color:var(--text-secondary);font-size:20px;line-height:1;cursor:pointer;opacity:0;transition:all .2s;border-radius:4px;flex-shrink:0}.delete-btn:hover:not(:disabled){background:var(--error);color:#fff;opacity:1}.delete-btn:disabled{cursor:not-allowed;opacity:1}