*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f0f0f;--surface: #1a1a1a;--surface2: #242424;--border: rgba(255,255,255,.08);--border2: rgba(255,255,255,.14);--text: #f0f0f0;--text2: #a0a0a0;--text3: #606060;--accent: #7c6ff7;--accent2: #9d98f5;--user-bg: #1e1e2e;--user-border: rgba(124,111,247,.3);--radius: 14px;--radius-sm: 8px}html,body,#root{height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.chat-main{flex:1;overflow-y:auto;padding:0 1rem;scroll-behavior:smooth}.chat-main::-webkit-scrollbar{width:4px}.chat-main::-webkit-scrollbar-track{background:transparent}.chat-main::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px}.chat-container{max-width:720px;margin:0 auto;padding:2rem 0 1rem;min-height:100%;display:flex;flex-direction:column}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:3rem 1rem;gap:1rem}.empty-icon{color:var(--accent);opacity:.7;margin-bottom:.5rem}.empty-title{font-size:1.4rem;font-weight:500;color:var(--text)}.empty-sub{font-size:.9rem;color:var(--text2);max-width:400px;line-height:1.6}.starter-pills{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:.5rem;max-width:560px}.starter-pill{background:var(--surface);border:.5px solid var(--border2);border-radius:20px;padding:7px 14px;font-size:.82rem;color:var(--text2);cursor:pointer;transition:all .15s;text-align:left}.starter-pill:hover{background:var(--surface2);color:var(--text);border-color:var(--accent)}.messages{display:flex;flex-direction:column;gap:1.2rem;padding-bottom:1rem}.message{display:flex;gap:12px;align-items:flex-start}.message-user{flex-direction:row-reverse}.avatar{width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;flex-shrink:0;margin-top:2px}.bubble{max-width:78%;padding:11px 16px;border-radius:var(--radius);font-size:.93rem;line-height:1.65}.message-assistant .bubble{background:var(--surface);border:.5px solid var(--border);border-radius:4px var(--radius) var(--radius) var(--radius);color:var(--text)}.message-user .bubble{background:var(--user-bg);border:.5px solid var(--user-border);border-radius:var(--radius) 4px var(--radius) var(--radius);color:var(--text)}.typing{display:flex;gap:5px;align-items:center;padding:14px 16px}.typing span{width:6px;height:6px;border-radius:50%;background:var(--text3);animation:bounce 1.1s infinite}.typing span:nth-child(2){animation-delay:.15s}.typing span:nth-child(3){animation-delay:.3s}@keyframes bounce{0%,80%,to{transform:translateY(0);opacity:.4}40%{transform:translateY(-5px);opacity:1}}.input-bar{border-top:.5px solid var(--border);background:var(--bg);padding:12px 1rem 16px;flex-shrink:0}.input-bar-inner{max-width:720px;margin:0 auto;display:flex;flex-direction:column;gap:8px}.input-row{display:flex;align-items:flex-end;gap:8px;background:var(--surface);border:.5px solid var(--border2);border-radius:var(--radius);padding:8px 10px;transition:border-color .15s}.input-row:focus-within{border-color:var(--accent)}.chat-input{flex:1;background:transparent;border:none;outline:none;color:var(--text);font-size:.93rem;line-height:1.5;resize:none;max-height:140px;overflow-y:auto;font-family:inherit;padding:4px 2px}.chat-input::placeholder{color:var(--text3)}.send-btn{width:34px;height:34px;border-radius:50%;background:var(--accent);border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:opacity .15s,transform .1s}.send-btn:hover:not(.disabled){opacity:.85}.send-btn:active:not(.disabled){transform:scale(.95)}.send-btn.disabled{opacity:.3;cursor:not-allowed}.reset-btn{width:34px;height:34px;border-radius:50%;background:transparent;border:.5px solid var(--border2);color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .15s}.reset-btn:hover{background:var(--surface2);color:var(--text)}.input-hint{font-size:.75rem;color:var(--text3);text-align:center}.error-bar{background:#ef44441a;border:.5px solid rgba(239,68,68,.3);border-radius:var(--radius-sm);padding:8px 12px;font-size:.82rem;color:#f87171;display:flex;align-items:center;gap:6px}@media (max-width: 600px){.bubble{max-width:88%}.empty-title{font-size:1.2rem}.starter-pills{gap:6px}.starter-pill{font-size:.78rem;padding:6px 11px}}