*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--bg-tertiary: #f0f1f3;--bg-hover: #e9ecef;--border: #dee2e6;--border-light: #e9ecef;--text-primary: #1a1a2e;--text-secondary: #6c757d;--text-muted: #adb5bd;--accent: #6c5ce7;--accent-light: rgba(108, 92, 231, .08);--accent-hover: #5a4bd1;--accent-subtle: rgba(108, 92, 231, .12);--success: #00b894;--danger: #d63031;--user-msg: #6c5ce7;--user-msg-text: #ffffff;--ai-msg: #f8f9fa;--sidebar-w: 280px;--radius: 12px;--radius-sm: 8px;--radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(0,0,0,.06);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 12px 40px rgba(0,0,0,.12);--transition: .2s ease}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);height:100vh;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-layout{display:flex;height:100vh;width:100vw}.sidebar{width:var(--sidebar-w);background:var(--bg-secondary);border-right:1px solid var(--border-light);display:flex;flex-direction:column;transition:transform var(--transition),opacity var(--transition);z-index:50;position:relative;overflow:hidden}.sidebar-closed{transform:translate(-100%);position:absolute;height:100%;opacity:0;pointer-events:none}.sidebar-open{transform:translate(0);opacity:1}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:20px 16px 16px}.sidebar-logo{display:flex;align-items:center;gap:10px;font-size:1.15rem;font-weight:700;color:var(--text-primary)}.logo-icon{color:var(--accent)}.logo-text{letter-spacing:1.5px;font-weight:800;background:linear-gradient(135deg,var(--accent),#a29bfe);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.sidebar-toggle-inner{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:var(--radius-sm);transition:all var(--transition);display:flex;align-items:center}.sidebar-toggle-inner:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-toggle-outer{background:var(--bg-primary);border:1px solid var(--border);color:var(--text-primary);padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:all 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var(--transition);position:relative}.chat-item:hover{background:var(--bg-hover)}.chat-item-active{background:var(--bg-primary);box-shadow:var(--shadow-sm)}.chat-item-icon{color:var(--text-muted);flex-shrink:0}.chat-item-title{flex:1;font-size:.84rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-primary);font-weight:400}.chat-item-actions{display:none;gap:2px;flex-shrink:0}.chat-item:hover .chat-item-actions{display:flex}.chat-action-btn{background:none;border:none;cursor:pointer;padding:4px;border-radius:4px;transition:all var(--transition);color:var(--text-muted);display:flex;align-items:center}.chat-action-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.chat-action-delete:hover{color:var(--danger)}.chat-rename-input{flex:1;background:var(--bg-primary);border:1.5px solid var(--accent);border-radius:6px;padding:5px 10px;color:var(--text-primary);font-size:.84rem;font-family:inherit;outline:none}.sidebar-footer{padding:12px;border-top:1px 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var(--transition);font-family:inherit;position:relative}.model-option:hover{background:var(--bg-hover);color:var(--text-primary)}.model-active{color:var(--text-primary);background:var(--accent-light);font-weight:500}.model-icon-svg{flex-shrink:0}.model-name{font-weight:inherit}.model-check{position:absolute;top:3px;right:5px;color:var(--accent)}.model-active-display{display:flex;align-items:center;gap:6px;font-size:.72rem;color:var(--text-secondary);padding:4px 0}.model-active-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0;animation:pulse-dot 2s infinite}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.4}}.model-active-desc{font-style:italic;opacity:.7}.chat-window{flex:1;display:flex;flex-direction:column;background:var(--bg-primary);min-width:0;transition:all var(--transition)}.chat-window-full{margin-left:0}.chat-window-header{padding:14px 24px;border-bottom:1px solid var(--border-light);background:var(--bg-primary);display:flex;align-items:center;gap:12px}.chat-window-title{font-size:.95rem;font-weight:600;display:flex;align-items:center;gap:8px;color:var(--text-primary)}.chat-window-model-dot{width:8px;height:8px;border-radius:50%;background:var(--success);animation:pulse-dot 2s infinite}.status-badge{font-size:.65rem;padding:3px 8px;background:var(--bg-tertiary);color:var(--text-secondary);border-radius:12px;font-weight:500;letter-spacing:.02em}.status-generating{background:#6c5ce71a;color:var(--accent);animation:pulse-bg 1.5s infinite}@keyframes pulse-bg{0%,to{opacity:1}50%{opacity:.6}}.chat-messages-area{flex:1;overflow-y:auto;padding:24px 32px;display:flex;flex-direction:column;gap:24px;background:var(--bg-primary)}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:8px;padding:40px;animation:fadeInUp .5s 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infinite;margin-left:2px;vertical-align:text-bottom;border-radius:1px}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.skeleton-loader{display:flex;flex-direction:column;gap:8px;padding:12px 16px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:18px 18px 18px 4px;width:200px}.skeleton-line{height:12px;border-radius:6px;background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--border-light) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:skeleton-loading 1.5s infinite}.skeleton-line.short{width:60%}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.debug-sidebar{width:280px;background:#1e1e2e;border-left:1px solid #2a2a3e;display:flex;flex-direction:column;color:#a6accd;font-family:JetBrains Mono,Fira Code,monospace;z-index:40}.debug-sidebar-header{display:flex;align-items:center;gap:8px;padding:16px 20px;border-bottom:1px solid #2a2a3e;background:#1a1a2e}.debug-sidebar-header 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0}.debug-info-text{margin-top:24px;text-align:center;font-size:.65rem;color:#4b5563;line-height:1.6}.tool-activated-banner{display:flex;align-items:center;gap:8px;padding:10px 16px;background:#c3e88d1a;border:1px solid rgba(195,232,141,.3);border-radius:8px;color:#c3e88d;font-size:.8rem;font-weight:500;margin-bottom:12px;animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-code-block{background:#1e1e2e;border-radius:var(--radius-sm);margin:10px 0;overflow:hidden}.code-block-header{display:flex;justify-content:space-between;align-items:center;padding:6px 12px;background:#2a2a3e}.code-lang{font-size:.68rem;color:#9ca3af;text-transform:uppercase;letter-spacing:.04em}.code-copy-btn{background:none;border:none;color:#9ca3af;font-size:.72rem;cursor:pointer;padding:3px 8px;border-radius:4px;transition:all var(--transition);font-family:inherit;display:flex;align-items:center;gap:4px}.code-copy-btn:hover{background:#ffffff14;color:#e5e7eb}.message-code-block pre{padding:14px;overflow-x:auto;font-size:.82rem;line-height:1.6}.message-code-block code{font-family:JetBrains Mono,Fira Code,monospace;color:#c4b5fd}.msg-inline-code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-family:JetBrains Mono,monospace;font-size:.84em;color:var(--accent);border:1px solid var(--border-light)}.msg-bullet{display:block;padding-left:4px}.input-box-wrapper{padding:12px 32px 16px;background:var(--bg-primary)}.input-box-container{display:flex;align-items:flex-end;gap:8px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:6px 8px 6px 18px;transition:border-color var(--transition),box-shadow var(--transition);box-shadow:var(--shadow-sm)}.input-box-container:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle)}.input-box-textarea{flex:1;background:none;border:none;color:var(--text-primary);font-size:.9rem;font-family:inherit;resize:none;outline:none;max-height:160px;padding:8px 0;line-height:1.5}.input-box-textarea::placeholder{color:var(--text-muted)}.input-box-send{width:38px;height:38px;border-radius:10px;border:none;background:var(--accent);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition);flex-shrink:0}.input-box-send:hover:not(.send-disabled){background:var(--accent-hover);transform:scale(1.04)}.send-disabled{opacity:.35;cursor:not-allowed}.send-spinner-icon{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.input-box-hint{text-align:center;font-size:.68rem;color:var(--text-muted);margin-top:8px}.settings-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000040;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:200;display:flex;align-items:center;justify-content:center;animation:fadeIn .15s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.settings-panel{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-lg);width:90%;max-width:460px;max-height:85vh;display:flex;flex-direction:column;animation:scaleIn .2s ease-out;box-shadow:var(--shadow-lg)}@keyframes scaleIn{0%{transform:scale(.97);opacity:0}to{transform:scale(1);opacity:1}}.settings-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-light)}.settings-header h2{font-size:1.05rem;font-weight:700}.settings-close{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:var(--radius-sm);transition:all var(--transition);display:flex;align-items:center}.settings-close:hover{background:var(--bg-hover);color:var(--text-primary)}.settings-body{padding:20px 24px;overflow-y:auto;display:flex;flex-direction:column;gap:24px}.settings-group{display:flex;flex-direction:column;gap:6px}.settings-label{font-size:.88rem;font-weight:600;display:flex;justify-content:space-between;align-items:center}.settings-label-text{display:flex;align-items:center;gap:6px}.settings-value{font-size:.8rem;color:var(--accent);font-weight:700;background:var(--accent-light);padding:2px 10px;border-radius:20px}.settings-desc{font-size:.76rem;color:var(--text-secondary);line-height:1.4}.settings-slider{-webkit-appearance:none;width:100%;height:5px;background:var(--bg-tertiary);border-radius:3px;outline:none;margin-top:4px}.settings-slider::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;background:var(--accent);border-radius:50%;cursor:pointer;transition:all var(--transition);border:2px solid var(--bg-primary);box-shadow:var(--shadow-sm)}.settings-slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.settings-slider-labels{display:flex;justify-content:space-between;font-size:.66rem;color:var(--text-muted)}.settings-textarea{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;color:var(--text-primary);font-family:inherit;font-size:.84rem;resize:vertical;outline:none;transition:border-color var(--transition)}.settings-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-subtle)}.settings-tools-list{display:flex;flex-direction:column;gap:4px}.settings-tool-item{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg-secondary);border-radius:var(--radius-sm);font-size:.8rem;color:var(--text-secondary)}.settings-danger-btn{padding:10px 16px;background:#d630310f;border:1px solid rgba(214,48,49,.2);border-radius:var(--radius-sm);color:var(--danger);font-size:.84rem;cursor:pointer;transition:all var(--transition);font-family:inherit;display:flex;align-items:center;gap:8px}.settings-danger-btn:hover{background:#d630311f}@media (max-width: 1024px){.debug-sidebar{display:none}}@media (max-width: 768px){.sidebar{position:fixed;height:100vh;z-index:1000;box-shadow:var(--shadow-lg)}.sidebar-closed{transform:translate(-100%);opacity:0}.sidebar-open{transform:translate(0);opacity:1}.chat-window{width:100vw}.chat-messages-area{padding:16px 20px}.message{max-width:92%}.empty-title{font-size:1.4rem}.empty-suggestions{grid-template-columns:1fr}.input-box-wrapper{padding:12px 16px 16px}.input-box-container{padding:6px 8px 6px 14px}.sidebar-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:999;animation:fadeIn .2s ease-out}}@media (max-width: 480px){.chat-window-header{padding:12px 16px}.chat-window-title{font-size:.85rem}.suggestion-card{padding:12px}.user-content .message-text,.ai-content .message-text{font-size:.85rem;padding:10px 14px}}