*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0a0a0f;--bg-secondary: #0f0f18;--bg-tertiary: #14141f;--bg-hover: rgba(139, 92, 246, .07);--bg-active: rgba(139, 92, 246, .13);--bg-input: rgba(255, 255, 255, .03);--bg-input-focus: rgba(139, 92, 246, .06);--text-primary: rgba(240, 238, 255, .95);--text-secondary: rgba(180, 175, 210, .8);--text-muted: rgba(120, 115, 155, .65);--border: rgba(139, 92, 246, .12);--border-focus: rgba(139, 92, 246, .4);--accent: #8b5cf6;--accent-dim: #6d44d4;--accent-soft: rgba(139, 92, 246, .15);--accent-glow: rgba(139, 92, 246, .25);--danger: #e05c7a;--shadow-sm: 0 2px 8px rgba(0,0,0,.4);--shadow-md: 0 8px 32px rgba(0,0,0,.5);--shadow-lg: 0 16px 48px rgba(0,0,0,.6);--glow: 0 0 24px rgba(139,92,246,.18);--radius-full: 9999px;--radius-xl: 24px;--radius-lg: 18px;--radius-md: 14px;--radius-sm: 10px;--radius-xs: 6px;--sidebar-width: 300px;--max-content-width: 700px;--transition-fast: .12s 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var(--transition-fast)}.sidebar-user:hover{background:var(--bg-hover);color:var(--danger)}.sidebar-username{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-secondary)}.conversation-rename-input{flex:1;background:var(--bg-tertiary);border:1px solid var(--border-focus);border-radius:var(--radius-xs);color:var(--text-primary);font-size:13px;font-family:inherit;padding:2px 6px;outline:none;min-width:0;box-shadow:0 0 0 2px var(--accent-soft)}.sidebar-search{display:flex;align-items:center;gap:8px;margin:0 4px 8px;padding:7px 10px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);transition:all var(--transition-fast)}.sidebar-search:focus-within{border-color:var(--border-focus);background:var(--bg-input-focus);box-shadow:0 0 0 2px 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var(--border);border-radius:var(--radius-md);padding:4px;min-width:180px;box-shadow:var(--shadow-lg),var(--glow);animation:dropdownIn .13s cubic-bezier(.16,1,.3,1)}.conv-menu-flyout-header{padding:5px 10px 4px;font-size:11px;font-weight:600;color:var(--text-muted);border-bottom:1px solid var(--border);margin-bottom:3px}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:100;transform:translate(-100%);transition:transform var(--transition-smooth)}.sidebar.open{transform:translate(0)}.sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:99;animation:fadeIn .2s ease}}.chat-view{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-view.with-artifact{flex-direction:row}.chat-main{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}.chat-view.with-artifact .chat-main{flex:0 0 42%;min-width:320px;border-right:1px solid var(--border)}.messages-container{flex:1;overflow-y:auto;display:flex;flex-direction:column}.home-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:32px;padding:40px 24px}.home-hero{display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center}.home-ghost-icon{color:var(--accent);filter:drop-shadow(0 0 18px var(--accent-glow));animation:ghostFloat 4s ease-in-out infinite}.home-title{font-size:28px;font-weight:600;color:var(--text-primary);letter-spacing:-.02em}.home-subtitle{font-size:14px;color:var(--text-muted);letter-spacing:.01em}.quick-actions{display:flex;flex-direction:row;align-items:center;justify-content:center;gap:8px;margin-top:12px;flex-wrap:wrap}.quick-action-btn{display:flex;align-items:center;gap:7px;padding:7px 16px;background:none;border:1px solid var(--border);border-radius:var(--radius-full);color:var(--text-secondary);font-size:13px;cursor:pointer;transition:all 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ol{margin:10px 0;padding-left:24px}.message-content li{margin-bottom:5px}.message-content blockquote{border-left:2px solid var(--accent);padding-left:14px;margin:10px 0;color:var(--text-secondary)}.message-content table{border-collapse:collapse;margin:14px 0;width:100%}.message-content th,.message-content td{border:1px solid var(--border);padding:10px 14px;text-align:left;font-size:13.5px}.message-content th{background:var(--bg-tertiary);font-weight:550}.code-block{margin:14px 0;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border)}.code-header{display:flex;justify-content:space-between;align-items:center;padding:7px 14px;background:#0006;font-size:11.5px;color:var(--text-muted);letter-spacing:.02em}.copy-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:var(--radius-xs);display:flex;transition:all var(--transition-fast)}.copy-btn:hover{color:var(--accent);background:var(--bg-hover)}.code-block pre{margin:0!important;border-radius:0!important}.inline-code{background:#8b5cf61a;padding:2px 7px;border-radius:var(--radius-xs);font-size:.88em;font-family:SF Mono,Fira Code,JetBrains Mono,monospace;color:#c4b5fd}.thinking-block{margin-bottom:14px;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}.thinking-toggle{display:flex;align-items:center;gap:7px;width:100%;padding:9px 14px;background:#8b5cf60a;border:none;color:var(--text-muted);cursor:pointer;font-size:12.5px;transition:all var(--transition-fast)}.thinking-toggle:hover{background:var(--bg-hover);color:var(--text-secondary)}.thinking-content{padding:14px;font-size:13px;color:var(--text-secondary);border-top:1px solid var(--border);max-height:300px;overflow-y:auto;line-height:1.7}@media(max-width:768px){.chat-view.with-artifact{flex-direction:column}.chat-view.with-artifact .chat-main{flex:0 0 40%;border-right:none;border-bottom:1px solid var(--border)}}.icon-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:7px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.icon-btn:hover:not(:disabled){color:var(--text-secondary);background:var(--bg-hover)}.icon-btn:disabled{opacity:.25;cursor:not-allowed}.icon-btn-active{color:var(--accent)!important;background:var(--accent-soft)!important}.send-btn{background:var(--accent);border:none;color:#fff;cursor:pointer;padding:0;border-radius:50%;display:flex;align-items:center;justify-content:center;width:34px;height:34px;transition:all var(--transition-fast);flex-shrink:0;box-shadow:0 0 12px var(--accent-soft)}.send-btn:hover:not(:disabled){transform:scale(1.07);background:var(--accent-dim);box-shadow:0 0 20px var(--accent-glow)}.send-btn:active:not(:disabled){transform:scale(.95)}.send-btn:disabled{opacity:.2;cursor:not-allowed;box-shadow:none}.send-btn.stop{background:var(--danger);box-shadow:0 0 12px #e05c7a4d}.home-input-wrapper{width:100%;max-width:var(--max-content-width)}.home-input-box{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-xl);padding:18px 22px 14px;transition:all var(--transition-normal);box-shadow:var(--shadow-sm)}.home-input-box:focus-within{border-color:var(--border-focus);background:var(--bg-input-focus);box-shadow:var(--glow)}.home-input-box textarea{width:100%;background:transparent;border:none;color:var(--text-primary);font-size:15.5px;font-family:inherit;line-height:1.55;resize:none;outline:none;min-height:28px;max-height:120px}.home-input-box textarea::placeholder{color:var(--text-muted)}.home-input-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:12px}.home-input-left{display:flex;align-items:center;gap:2px}.home-input-right{display:flex;align-items:center;gap:10px}.conv-input-container{padding:12px 20px 28px;max-width:calc(var(--max-content-width) + 80px);margin:0 auto;width:100%}.conv-input-box{background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-xl);padding:16px 20px 12px;transition:all var(--transition-normal)}.conv-input-box:focus-within{border-color:var(--border-focus);background:var(--bg-input-focus);box-shadow:var(--glow)}.conv-input-box textarea{width:100%;background:transparent;border:none;color:var(--text-primary);font-size:14.5px;font-family:inherit;line-height:1.55;resize:none;outline:none;min-height:24px;max-height:200px}.conv-input-box textarea::placeholder{color:var(--text-muted)}.conv-input-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:10px}.conv-input-left{display:flex;align-items:center;gap:2px}.conv-input-right{display:flex;align-items:center;gap:10px}.hidden-file-input{display:none}.attachments-preview{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.attachment-image-preview{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border)}.attachment-image-preview img{max-width:300px;max-height:200px;display:block;object-fit:contain}.attachment-file-chip{display:flex;align-items:center;gap:7px;padding:7px 12px;background:var(--bg-hover);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:12px;color:var(--text-secondary)}.attachment-size{color:var(--text-muted);font-size:11px}.input-attachments{display:flex;flex-wrap:wrap;gap:6px;padding:0 0 10px}.input-attachment-chip{display:flex;align-items:center;gap:7px;padding:5px 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rgba(224,92,122,.2)}.login-btn{margin-top:.25rem;padding:.75rem;border-radius:var(--radius-sm);border:none;background:var(--accent);color:#fff;font-size:.95rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);box-shadow:0 0 16px var(--accent-soft);font-family:inherit}.login-btn:hover:not(:disabled){background:var(--accent-dim);box-shadow:0 0 24px var(--accent-glow)}.login-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.artifact-panel{flex:1;min-width:0;background:var(--bg-secondary);display:flex;flex-direction:column;overflow:hidden;animation:slideInRight .22s cubic-bezier(.16,1,.3,1)}.artifact-panel-header{display:flex;align-items:center;justify-content:space-between;padding:0 14px;height:52px;border-bottom:1px solid var(--border);gap:12px;flex-shrink:0}.artifact-panel-title{display:flex;align-items:center;gap:9px;min-width:0;flex:1;overflow:hidden}.artifact-panel-type-badge{font-size:9.5px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:3px 8px;border-radius:var(--radius-full);background:var(--accent-soft);color:var(--accent);flex-shrink:0;border:1px solid rgba(139,92,246,.25)}.artifact-panel-name{font-size:13px;font-weight:500;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.artifact-panel-controls{display:flex;align-items:center;gap:8px;flex-shrink:0}.artifact-tab-switcher{display:flex;align-items:center;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-full);padding:3px;gap:2px}.artifact-tab-btn{display:flex;align-items:center;gap:5px;padding:4px 12px;border:none;border-radius:var(--radius-full);background:transparent;color:var(--text-muted);font-size:12px;font-family:inherit;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.artifact-tab-btn:hover{color:var(--text-secondary)}.artifact-tab-btn.active{background:var(--accent);color:#fff;box-shadow:0 0 10px var(--accent-soft)}.artifact-actions-group{display:flex;align-items:center;gap:2px}.artifact-icon-btn{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast);position:relative}.artifact-icon-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.artifact-icon-btn--success{color:#6ee7b7!important;background:#6ee7b714!important}.artifact-icon-btn--close:hover{color:var(--danger);background:#e05c7a14}.artifact-divider{width:1px;height:18px;background:var(--border);margin:0 4px}.artifact-panel-body{flex:1;overflow:hidden;position:relative;background:var(--bg-primary)}.artifact-iframe{width:100%;height:100%;border:none;background:var(--bg-primary);display:block}.artifact-code-view{height:100%;overflow:auto}.artifact-code-view>div{min-height:100%;white-space:pre-wrap!important;word-break:break-all}.artifact-chip-btn{display:flex;align-items:center;gap:10px;padding:10px 14px;margin:8px 0;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);cursor:pointer;width:100%;text-align:left;transition:all var(--transition-fast);color:var(--text-secondary)}.artifact-chip-btn:hover{border-color:var(--accent);background:var(--bg-hover);box-shadow:0 0 12px var(--accent-soft)}.artifact-chip-info{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.artifact-chip-title{font-size:13px;font-weight:500;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.artifact-chip-lang{font-size:11px;color:var(--accent);text-transform:uppercase;letter-spacing:.05em}.artifact-chip-open{font-size:12px;color:var(--accent);flex-shrink:0}.artifact-chip{background:var(--accent-soft)!important;border:1px solid var(--accent)!important;color:var(--accent)!important}@media(max-width:768px){.artifact-panel{flex:1}.artifact-panel-name{display:none}}.plus-menu-anchor{position:relative}.plus-menu{position:absolute;bottom:calc(100% + 10px);left:0;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);padding:5px;min-width:190px;box-shadow:var(--shadow-lg),var(--glow);z-index:50;animation:dropdownIn .14s cubic-bezier(.16,1,.3,1)}.plus-menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 12px;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:13.5px;font-family:inherit;cursor:pointer;transition:all var(--transition-fast);text-align:left}.plus-menu-item:hover{background:var(--bg-hover);color:var(--text-primary)}.plus-menu-item-active{color:var(--accent)!important}.plus-menu-divider{height:1px;background:var(--border);margin:4px 6px}.artifact-toggle{margin-left:auto;width:32px;height:18px;border-radius:9px;background:var(--bg-hover);border:1px solid var(--border);position:relative;transition:all var(--transition-fast);flex-shrink:0}.artifact-toggle.on{background:var(--accent);border-color:var(--accent);box-shadow:0 0 8px var(--accent-soft)}.artifact-toggle-thumb{position:absolute;top:2px;left:2px;width:12px;height:12px;border-radius:50%;background:var(--text-muted);transition:all var(--transition-fast)}.artifact-toggle.on .artifact-toggle-thumb{left:16px;background:#fff}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:500;display:flex;align-items:center;justify-content:center;animation:fadeIn .15s ease}.modal-box{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);width:100%;max-width:520px;box-shadow:var(--shadow-lg),var(--glow);display:flex;flex-direction:column;animation:dropdownIn .18s cubic-bezier(.16,1,.3,1);overflow:hidden}.modal-header{display:flex;align-items:center;gap:10px;padding:16px 18px;border-bottom:1px solid var(--border)}.modal-title{flex:1;display:flex;align-items:center;gap:9px;min-width:0}.modal-name-input{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);font-size:15px;font-weight:600;font-family:inherit;min-width:0}.modal-name-input::placeholder{color:var(--text-muted)}.modal-close-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:5px;border-radius:var(--radius-xs);display:flex;transition:all var(--transition-fast);flex-shrink:0}.modal-close-btn:hover{color:var(--danger);background:#e05c7a14}.modal-tabs{display:flex;gap:2px;padding:10px 14px;border-bottom:1px solid var(--border)}.modal-tab{display:flex;align-items:center;gap:6px;padding:6px 14px;background:none;border:1px solid transparent;border-radius:var(--radius-sm);color:var(--text-muted);font-size:13px;font-family:inherit;cursor:pointer;transition:all var(--transition-fast)}.modal-tab:hover{background:var(--bg-hover);color:var(--text-secondary)}.modal-tab.active{background:var(--bg-active);color:var(--accent);border-color:#8b5cf633}.modal-body{padding:18px;display:flex;flex-direction:column;gap:10px}.modal-hint{font-size:12.5px;color:var(--text-muted);line-height:1.6}.modal-textarea{width:100%;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:13px;font-family:SF Mono,Fira Code,JetBrains Mono,monospace;line-height:1.6;padding:12px 14px;resize:vertical;outline:none;transition:all var(--transition-fast)}.modal-textarea:focus{border-color:var(--border-focus);background:var(--bg-input-focus);box-shadow:0 0 0 2px var(--accent-soft)}.modal-textarea::placeholder{color:var(--text-muted);font-family:inherit}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:14px 18px;border-top:1px solid var(--border)}.modal-btn{padding:7px 18px;border-radius:var(--radius-sm);font-size:13.5px;font-family:inherit;font-weight:500;cursor:pointer;transition:all var(--transition-fast);border:1px solid transparent}.modal-btn--ghost{background:none;border-color:var(--border);color:var(--text-secondary)}.modal-btn--ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.modal-btn--primary{background:var(--accent);color:#fff;box-shadow:0 0 12px var(--accent-soft)}.modal-btn--primary:hover{background:var(--accent-dim);box-shadow:0 0 20px var(--accent-glow)}