:root{--bg:#030712;--bg-chat:#0a0f1e;--bg-input:#111827;--bg-card:#0a0f1e;--bg-msg-user:#1e3a5f;--bg-msg-bot:#111827;--text:#f9fafb;--text-muted:#9ca3af;--border:#1f2937;--accent:#3b82f6;--accent-hover:#2563eb;--accent-glow:#3b82f626;--green:#22c55e;--red:#ef4444;--yellow:#eab308}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,system-ui,sans-serif}a{color:inherit;text-decoration:none}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,textarea{outline:none;font-family:inherit}input:focus,textarea:focus{border-color:var(--accent)!important}.btn-sm{border:1px solid var(--border);color:var(--text);cursor:pointer;background:0 0;border-radius:8px;padding:.4rem .9rem;font-size:.8rem;transition:background .2s}.btn-sm:hover{background:var(--bg-input)}.btn-sm.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-sm.primary:hover{background:var(--accent-hover)}.msg{border-radius:6px;margin-top:.5rem;padding:.5rem .75rem;font-size:.8rem}.msg.success{color:var(--green);background:#22c55e1a}.msg.error{color:var(--red);background:#ef44441a}pre{background:var(--bg-input);border:1px solid var(--border);border-radius:8px;margin:.5rem 0;padding:.75rem;font-size:.82rem;overflow-x:auto}pre code{font-size:inherit;background:0 0;padding:0}.typing-dots span{background:var(--text-muted);border-radius:50%;width:6px;height:6px;margin:0 2px;animation:1.4s infinite blink;display:inline-block}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,to{opacity:.3}40%{opacity:1}}.chat-chip{border:1px solid var(--border);background:var(--bg-input);color:var(--text-muted);cursor:pointer;border-radius:20px;padding:.4rem .85rem;font-size:.78rem;transition:all .2s}.chat-chip:hover{border-color:var(--accent);color:var(--text);background:var(--accent-glow)}@media (max-width:640px){header{padding:.5rem .75rem!important}.input-bar{padding:.5rem .75rem .9rem!important}.site-header{gap:.5rem}.header-left{display:none!important}.header-center{gap:.4rem!important;position:static!important;transform:none!important}.header-center-logo{width:34px!important;height:34px!important}.header-center-title{font-size:1.05rem!important}.header-right{flex-wrap:wrap;justify-content:flex-end;margin-left:auto;gap:.35rem!important}.header-username{display:none!important}.header-right .btn-sm{padding:.3rem .5rem;font-size:.68rem}main,.chat-scroll{padding:1rem .75rem!important}pre{max-width:100%}}