:root{--bg-primary: #0b141a;--bg-secondary: #111b21;--bg-tertiary: #1f2c34;--bg-hover: #2a3942;--bubble-outgoing: #005c4b;--bubble-outgoing-hover: #006d5b;--bubble-incoming: #1f2c34;--bubble-incoming-hover: #263740;--accent-primary: #00a884;--accent-primary-hover: #06cf9c;--accent-glow: rgba(0, 168, 132, .15);--accent-secondary: #8696a0;--text-primary: #e9edef;--text-secondary: #8696a0;--text-muted: #667781;--text-bubble-time: rgba(255, 255, 255, .6);--border-color: #2a3942;--border-light: rgba(134, 150, 160, .15);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .6875rem;--font-size-sm: .8125rem;--font-size-base: .9375rem;--font-size-lg: 1.0625rem;--font-size-xl: 1.25rem;--header-height: 60px;--input-area-height: 62px;--sidebar-width: 320px;--max-bubble-width: 65%;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:var(--font-family);font-size:var(--font-size-base);color:var(--text-primary);background-color:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{display:flex;height:100vh;width:100vw;background:var(--bg-primary)}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column;transition:transform var(--transition-slow)}.sidebar-header{height:var(--header-height);padding:0 16px;display:flex;align-items:center;justify-content:space-between;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.sidebar-header h2{font-size:var(--font-size-lg);font-weight:600;color:var(--text-primary);letter-spacing:-.01em}.sidebar-header .status-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-primary);box-shadow:0 0 8px var(--accent-primary);animation:pulse-dot 2s ease-in-out infinite}@keyframes pulse-dot{0%,to{opacity:1;box-shadow:0 0 8px var(--accent-primary)}50%{opacity:.6;box-shadow:0 0 16px var(--accent-primary)}}.user-input-section{padding:12px 16px;border-bottom:1px solid var(--border-color)}.user-input-section label{display:block;font-size:var(--font-size-xs);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;font-weight:500}.user-input-group{display:flex;gap:8px}.user-input-group input{flex:1;padding:8px 12px;border-radius:8px;border:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-family);font-size:var(--font-size-sm);outline:none;transition:border-color var(--transition-fast)}.user-input-group input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px var(--accent-glow)}.user-input-group button{padding:8px 16px;border-radius:8px;border:none;background:var(--accent-primary);color:var(--bg-primary);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.user-input-group button:hover{background:var(--accent-primary-hover);transform:translateY(-1px)}.sidebar-info{flex:1;padding:16px;overflow-y:auto}.info-card{background:var(--bg-tertiary);border-radius:12px;padding:16px;margin-bottom:12px;border:1px solid var(--border-light)}.info-card h3{font-size:var(--font-size-sm);font-weight:600;color:var(--accent-primary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em}.info-card p{font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.5}.info-card .stat{display:flex;justify-content:space-between;padding:4px 0;font-size:var(--font-size-sm)}.info-card .stat-label{color:var(--text-muted)}.info-card .stat-value{color:var(--text-primary);font-weight:500}.chat-area{flex:1;display:flex;flex-direction:column;min-width:0;position:relative}.chat-area:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at 20% 50%,rgba(0,168,132,.03) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(0,168,132,.02) 0%,transparent 40%);pointer-events:none;z-index:0}.chat-header{height:var(--header-height);padding:0 20px;display:flex;align-items:center;gap:12px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);position:relative;z-index:2}.chat-header-avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--accent-primary),#00d4aa);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;flex-shrink:0}.chat-header-info{flex:1}.chat-header-name{font-size:var(--font-size-base);font-weight:600;color:var(--text-primary)}.chat-header-status{font-size:var(--font-size-xs);color:var(--accent-primary)}.connection-status{display:flex;align-items:center;gap:6px;font-size:var(--font-size-xs);color:var(--text-muted)}.connection-dot{width:6px;height:6px;border-radius:50%;background:var(--accent-primary)}.connection-dot.disconnected{background:#e74c3c}.messages-container{flex:1;overflow-y:auto;padding:16px 48px;display:flex;flex-direction:column;gap:4px;position:relative;z-index:1;scroll-behavior:smooth}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-track{background:transparent}.messages-container::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.messages-container::-webkit-scrollbar-thumb:hover{background:var(--accent-secondary)}.welcome-message{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:60px 20px;gap:16px;flex:1}.welcome-icon{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--accent-primary),#00d4aa);display:flex;align-items:center;justify-content:center;font-size:32px;box-shadow:0 0 30px var(--accent-glow);animation:welcome-float 3s ease-in-out infinite}@keyframes welcome-float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.welcome-message h2{font-size:var(--font-size-xl);font-weight:600;color:var(--text-primary)}.welcome-message p{font-size:var(--font-size-sm);color:var(--text-secondary);max-width:400px;line-height:1.6}.message-row{display:flex;animation:message-in var(--transition-slow) forwards}@keyframes message-in{0%{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.message-row.outgoing{justify-content:flex-end}.message-row.incoming{justify-content:flex-start}.message-bubble{max-width:var(--max-bubble-width);padding:8px 12px;border-radius:8px;position:relative;line-height:1.45;font-size:var(--font-size-base);word-wrap:break-word;box-shadow:var(--shadow-sm)}.message-bubble.outgoing{background:var(--bubble-outgoing);border-top-right-radius:2px;color:var(--text-primary)}.message-bubble.incoming{background:var(--bubble-incoming);border-top-left-radius:2px;color:var(--text-primary)}.message-text{margin-bottom:2px;white-space:pre-wrap}.message-time{font-size:var(--font-size-xs);color:var(--text-bubble-time);text-align:right;margin-top:2px}.typing-indicator{display:flex;align-items:center;gap:4px;padding:12px 16px}.typing-indicator .dot{width:7px;height:7px;border-radius:50%;background:var(--text-secondary);animation:typing-bounce 1.4s ease-in-out infinite}.typing-indicator .dot:nth-child(1){animation-delay:0ms}.typing-indicator .dot:nth-child(2){animation-delay:.2s}.typing-indicator .dot:nth-child(3){animation-delay:.4s}@keyframes typing-bounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-6px);opacity:1}}.input-area{padding:10px 48px;background:var(--bg-tertiary);border-top:1px solid var(--border-color);position:relative;z-index:2}.input-wrapper{display:flex;align-items:flex-end;gap:10px;max-width:100%}.input-wrapper textarea{flex:1;padding:10px 16px;border-radius:12px;border:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.4;resize:none;outline:none;min-height:42px;max-height:120px;transition:border-color var(--transition-fast)}.input-wrapper textarea::placeholder{color:var(--text-muted)}.input-wrapper textarea:focus{border-color:var(--accent-primary)}.send-button{width:42px;height:42px;border-radius:50%;border:none;background:var(--accent-primary);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0}.send-button:hover:not(:disabled){background:var(--accent-primary-hover);transform:scale(1.05);box-shadow:0 0 16px var(--accent-glow)}.send-button:disabled{opacity:.4;cursor:not-allowed}.send-button svg{width:20px;height:20px;fill:currentColor}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:100;transform:translate(-100%);box-shadow:var(--shadow-lg)}.sidebar.open{transform:translate(0)}.sidebar-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:99;opacity:0;pointer-events:none;transition:opacity var(--transition-base)}.sidebar-overlay.visible{opacity:1;pointer-events:auto}.messages-container{padding:12px 16px}.input-area{padding:10px 16px}.message-bubble{max-width:85%}.menu-button{display:flex}}.menu-button{display:none;width:36px;height:36px;border-radius:8px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;align-items:center;justify-content:center;font-size:20px}@media(max-width:768px){.menu-button{display:flex}}