:root{--primary: #00b4b4;--primary-dark: #009999;--primary-light: #4dd4d4;--primary-glow: rgba(0, 180, 180, .15);--bg-dark: #0a1628;--bg-card: #111d32;--bg-elevated: #182842;--bg-input: #1e3a5f;--text-primary: #ffffff;--text-secondary: #8ba3c7;--text-muted: #5a7494;--accent-success: #22c55e;--accent-warning: #f59e0b;--accent-error: #ef4444;--font-family: "Heebo", -apple-system, BlinkMacSystemFont, sans-serif;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-full: 9999px;--transition-fast: .15s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}html{font-size:16px}body{font-family:var(--font-family);background:var(--bg-dark);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;overscroll-behavior:none}.app{display:flex;flex-direction:column;height:100vh;height:100dvh;max-width:800px;margin:0 auto;background:linear-gradient(180deg,var(--bg-dark) 0%,#0d1f35 100%)}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:var(--bg-card);border-bottom:1px solid rgba(255,255,255,.05);flex-shrink:0}.header-brand{display:flex;align-items:center;gap:12px}.header-logo{width:38px;height:38px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}.header-title{font-size:1.2rem;font-weight:700;letter-spacing:-.5px}.header-subtitle{font-size:.85rem;color:var(--text-secondary)}.header-actions{display:flex;align-items:center;gap:12px}.status-pill{display:flex;align-items:center;gap:8px;padding:4px 14px;border-radius:var(--radius-full);font-size:.85rem}.status-pill.active{background:#22c55e1a;color:var(--accent-success)}.status-pill.idle{background:#94a3b81a;color:#94a3b8}.status-dot{width:8px;height:8px;border-radius:50%;background:currentColor}.status-pill.active .status-dot{animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.new-chat-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:6px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.new-chat-btn:hover{color:var(--primary);background:#ffffff0d}.new-chat-btn svg{width:22px;height:22px}.chat-area{flex:1;overflow:hidden;display:flex;flex-direction:column}.chat-scroll{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:16px}.chat-scroll::-webkit-scrollbar{width:6px}.chat-scroll::-webkit-scrollbar-track{background:transparent}.chat-scroll::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:3px}.chat-scroll::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.msg{display:flex;gap:12px;max-width:85%;animation:msgIn .3s ease}@keyframes msgIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.msg.bot{align-self:flex-end}.msg.user{flex-direction:row-reverse;align-self:flex-start}.msg-avatar{flex-shrink:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border-radius:var(--radius-sm);font-weight:700;font-size:.95rem}.msg-body{display:flex;flex-direction:column;gap:4px}.msg-bubble{padding:12px 18px;border-radius:var(--radius-lg);line-height:1.55;font-size:.95rem;white-space:pre-wrap;word-break:break-word}.msg.bot .msg-bubble{background:var(--bg-elevated);border:1px solid rgba(255,255,255,.05);border-start-end-radius:var(--radius-sm)}.msg.user .msg-bubble{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border-start-start-radius:var(--radius-sm)}.msg-time{font-size:.7rem;color:var(--text-muted);padding:0 6px}.msg.user .msg-time{text-align:start}.typing{display:flex;gap:12px;align-self:flex-end;animation:msgIn .3s ease}.typing-dots{display:flex;gap:5px;padding:14px 20px;background:var(--bg-elevated);border-radius:var(--radius-lg);border-start-end-radius:var(--radius-sm);align-items:center}.typing-dots span{width:8px;height:8px;background:var(--text-muted);border-radius:50%;animation:bounce 1.4s infinite}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-8px);opacity:1}}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:32px 24px;gap:28px;text-align:center}.empty-logo{width:60px;height:60px;border-radius:16px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.5rem;box-shadow:0 4px 20px #00b4b44d}.empty-greeting h2{font-size:1.25rem;font-weight:600;margin:0 0 4px}.empty-greeting p{font-size:.95rem;color:var(--text-secondary);margin:0}.empty-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;max-width:400px}.empty-action{display:flex;align-items:center;gap:10px;padding:12px 16px;border-radius:var(--radius-md);border:1px solid rgba(255,255,255,.1);background:var(--bg-elevated);color:var(--text-primary);font-family:var(--font-family);font-size:.875rem;cursor:pointer;transition:all .2s ease}.empty-action:hover{background:var(--primary-glow);border-color:var(--primary);transform:translateY(-2px)}.empty-action:active{transform:translateY(0)}.empty-action .emoji{font-size:1.2rem;line-height:1;flex-shrink:0}.input-area{padding:12px 24px 20px;background:var(--bg-card);border-top:1px solid rgba(255,255,255,.05);flex-shrink:0}.input-bar{display:flex;align-items:flex-end;gap:8px;background:var(--bg-input);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:8px;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input-bar:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.input-bar textarea{flex:1;background:transparent;border:none;outline:none;color:var(--text-primary);font-family:var(--font-family);font-size:1rem;padding:8px 12px;resize:none;max-height:150px;line-height:1.5}.input-bar textarea::placeholder{color:var(--text-muted)}.input-bar textarea:disabled{opacity:.5}.send-btn{flex-shrink:0;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;transition:all var(--transition-fast)}.send-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 12px var(--primary-glow)}.send-btn:active:not(:disabled){transform:scale(.98)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.send-btn svg{width:20px;height:20px;transform:rotate(180deg)}@media (max-width: 640px){.header{padding:10px 16px}.chat-scroll{padding:16px}.msg{max-width:95%}.input-area{padding:10px 16px 16px}.header-subtitle{display:none}.empty-actions{grid-template-columns:1fr;max-width:280px}}