.app-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm);z-index:10}.header-content{max-width:100%;margin:0 auto;padding:var(--spacing-md) var(--spacing-lg);display:flex;align-items:center;justify-content:space-between}.header-left{display:flex;align-items:center;gap:var(--spacing-lg)}.logo{display:flex;align-items:center;gap:var(--spacing-md);color:var(--text-primary)}.logo-icon{width:32px;height:32px;border-radius:50%;object-fit:cover}.logo svg{flex-shrink:0}.logo-text{font-size:var(--font-size-lg);font-weight:600;margin:0;background:linear-gradient(135deg,var(--accent-primary),#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header-right{display:flex;align-items:center;gap:var(--spacing-sm)}.new-chat-btn{transition:all var(--transition-base)}.new-chat-btn:hover{transform:rotate(90deg)}@media (max-width: 768px){.header-content{padding:var(--spacing-sm) var(--spacing-md)}.logo-text{font-size:var(--font-size-base)}.logo-icon,.logo svg{width:28px;height:28px}}.message-wrapper{width:100%;padding:var(--spacing-lg) 0;animation:fadeIn var(--transition-base) ease-out}.user-message-wrapper{background:var(--bg-primary)}.bot-message-wrapper{background:var(--bg-secondary)}.message-container{max-width:800px;margin:0 auto;padding:0 var(--spacing-lg);display:flex;gap:var(--spacing-lg)}.message-avatar{flex-shrink:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;color:var(--text-primary)}.bot-avatar-icon{width:32px;height:32px;border-radius:50%;object-fit:cover}.message-content{flex:1;min-width:0}.message-bubble{font-size:var(--font-size-base);line-height:1.7;word-wrap:break-word}.user-bubble,.bot-bubble{color:var(--text-primary)}.user-bubble p{margin:0}.loading-dots{display:flex;gap:6px;padding:var(--spacing-sm) 0}.loading-dots span{width:8px;height:8px;background:var(--text-muted);border-radius:50%;animation:bounce 1.4s infinite ease-in-out both}.loading-dots span:nth-child(1){animation-delay:-.32s}.loading-dots span:nth-child(2){animation-delay:-.16s}@keyframes bounce{0%,80%,to{transform:scale(.8);opacity:.5}40%{transform:scale(1);opacity:1}}@media (max-width: 768px){.message-container{padding:0 var(--spacing-md);gap:var(--spacing-md)}.message-avatar{width:28px;height:28px}.bot-avatar-icon,.message-avatar svg{width:28px;height:28px}}.chat-container{flex:1;overflow-y:auto;overflow-x:hidden;background:var(--bg-primary)}.messages-list{min-height:100%;display:flex;flex-direction:column}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center;animation:fadeIn var(--transition-slow) ease-out}.empty-state-icon{color:var(--accent-primary);margin-bottom:var(--spacing-xl);opacity:.8;animation:pulse 3s ease-in-out infinite}.empty-state-title{font-size:2rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--spacing-md);background:linear-gradient(135deg,var(--text-primary),var(--accent-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.empty-state-description{font-size:var(--font-size-lg);color:var(--text-secondary);max-width:500px;line-height:1.6}@media (max-width: 768px){.empty-state{padding:var(--spacing-xl) var(--spacing-md)}.empty-state-icon svg{width:64px;height:64px}.empty-state-title{font-size:1.5rem}.empty-state-description{font-size:var(--font-size-base)}}.chat-input-container{border-top:1px solid var(--border-color);background:var(--bg-primary);padding:var(--spacing-lg) 0 var(--spacing-lg)}.chat-input-wrapper{max-width:800px;margin:0 auto;padding:0 var(--spacing-lg)}.chat-input-form{position:relative;display:flex;align-items:flex-end;gap:var(--spacing-md);background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-md) var(--spacing-lg);transition:all var(--transition-base)}.chat-input-form:focus-within{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-light)}.chat-textarea{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.6;resize:none;min-height:24px;max-height:200px;overflow-y:auto;padding:4px 0}.chat-textarea::placeholder{color:var(--text-muted)}.chat-textarea:disabled{opacity:.6;cursor:not-allowed}.voice-button{flex-shrink:0;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);color:var(--text-secondary);border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);outline:none;box-shadow:var(--shadow-sm)}.voice-button:hover:not(:disabled){background:var(--bg-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.voice-button:disabled{opacity:.5;cursor:not-allowed}.voice-button.listening{background:#ef4444;color:#fff;animation:pulse 1.5s ease-in-out infinite}.voice-button svg{width:20px;height:20px}@keyframes pulse{0%,to{box-shadow:0 0 #ef4444b3}50%{box-shadow:0 0 0 10px #ef444400}}.send-button{flex-shrink:0;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--accent-gradient);color:#fff;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);outline:none;box-shadow:var(--shadow-sm)}.send-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-glow)}.send-button:disabled{opacity:.5;cursor:not-allowed;transform:scale(1)}.send-button:active:not(:disabled){transform:translateY(0)}.send-button svg{width:20px;height:20px}.chat-input-footer{margin-top:var(--spacing-md);text-align:center}.footer-text{font-size:var(--font-size-xs);color:var(--text-muted);margin:0}@media (max-width: 768px){.chat-input-wrapper{padding:0 var(--spacing-md)}.chat-input-form{padding:var(--spacing-md)}.voice-button,.send-button{width:36px;height:36px}.voice-button svg,.send-button svg{width:18px;height:18px}}.app{height:100%;display:flex;flex-direction:column;background:var(--bg-primary)}:root{--bg-primary: #1a1b26;--bg-secondary: #24283b;--bg-tertiary: #16161e;--bg-hover: #2f3549;--bg-input: #1f2335;--text-primary: #c0caf5;--text-secondary: #a9b1d6;--text-muted: #565f89;--accent-primary: #7aa2f7;--accent-secondary: #bb9af7;--accent-hover: #89b4fa;--accent-light: rgba(122, 162, 247, .1);--accent-gradient: linear-gradient(135deg, #7aa2f7 0%, #bb9af7 100%);--border-color: rgba(122, 162, 247, .15);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(122, 162, 247, .3);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.5rem;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.6;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{height:100%;display:flex;flex-direction:column}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-tertiary)}::-webkit-scrollbar-thumb{background:var(--bg-secondary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--bg-hover)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-sm);font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);outline:none;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-sm)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-glow);filter:brightness(1.1)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover);border-color:var(--accent-primary);box-shadow:var(--shadow-sm)}.btn-icon{padding:var(--spacing-sm);border-radius:var(--radius-md);background:transparent;color:var(--text-secondary);border:none;cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;justify-content:center}.btn-icon:hover{background:var(--bg-hover);color:var(--text-primary)}.input{width:100%;padding:var(--spacing-md);font-size:var(--font-size-base);font-family:var(--font-family);color:var(--text-primary);background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius-lg);outline:none;transition:all var(--transition-base);resize:none}.input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-light)}.input::placeholder{color:var(--text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{transform:translate(-100%)}to{transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.fade-in{animation:fadeIn var(--transition-base) ease-out}.slide-in{animation:slideIn var(--transition-slow) ease-out}.pulse{animation:pulse 1.5s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:20px;height:20px;border:2px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}.markdown-content{line-height:1.7;color:var(--text-primary)}.markdown-content p{margin-bottom:var(--spacing-md)}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4,.markdown-content h5,.markdown-content h6{margin-top:var(--spacing-lg);margin-bottom:var(--spacing-md);font-weight:600;line-height:1.3}.markdown-content h1{font-size:var(--font-size-xl)}.markdown-content h2{font-size:var(--font-size-lg)}.markdown-content h3{font-size:var(--font-size-base)}.markdown-content code{padding:.2em .4em;background:var(--bg-tertiary);border-radius:var(--radius-sm);font-family:Monaco,Courier New,monospace;font-size:.9em}.markdown-content pre{background:var(--bg-tertiary);padding:var(--spacing-md);border-radius:var(--radius-md);overflow-x:auto;margin-bottom:var(--spacing-md)}.markdown-content pre code{background:none;padding:0}.markdown-content ul,.markdown-content ol{margin-bottom:var(--spacing-md);padding-left:var(--spacing-xl)}.markdown-content li{margin-bottom:var(--spacing-sm)}.markdown-content a{color:var(--accent-primary);text-decoration:none;transition:color var(--transition-fast)}.markdown-content a:hover{color:var(--accent-hover);text-decoration:underline}.markdown-content blockquote{border-left:3px solid var(--accent-primary);padding-left:var(--spacing-md);margin-left:0;margin-bottom:var(--spacing-md);color:var(--text-secondary);font-style:italic}.markdown-content table{width:100%;border-collapse:collapse;margin-bottom:var(--spacing-md)}.markdown-content th,.markdown-content td{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-color);text-align:left}.markdown-content th{background:var(--bg-secondary);font-weight:600}@media (max-width: 768px){:root{--font-size-base: .9375rem}.container{padding:0 var(--spacing-sm)}}