.app{display:flex;flex-direction:column;max-width:720px;margin:0 auto;height:100vh;padding:0 1rem}.header{padding:1.5rem 0;border-bottom:1px solid var(--border)}.header h1{margin:0;font-size:1.5rem;font-weight:600;color:var(--accent)}.header p{margin:.25rem 0 0;font-size:.9rem;color:var(--text-muted)}.chat{flex:1;display:flex;flex-direction:column;min-height:0}.messages{flex:1;overflow-y:auto;padding:1rem 0}.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-muted)}.empty-state .hint{margin-top:.5rem;font-size:.85rem;opacity:.8}.message{margin-bottom:1rem;padding:.75rem 1rem;border-radius:var(--radius);background:var(--bg-surface)}.message.user{background:var(--user-bubble);margin-left:2rem}.message.assistant{margin-right:2rem}.message .role{display:block;font-size:.75rem;font-weight:500;color:var(--accent);margin-bottom:.35rem}.message.user .role{color:var(--text-muted)}.message .content{font-size:.95rem}.message .content p{margin:0 0 .5rem}.message .content p:last-child{margin-bottom:0}.message .content pre{background:var(--bg-deep);padding:.75rem;border-radius:8px;overflow-x:auto;font-size:.85rem;margin:.5rem 0}.message .content code{background:var(--bg-elevated);padding:.15em .4em;border-radius:4px}.message .content pre code{background:none;padding:0}.message .typing{color:var(--text-muted);font-style:italic}.input-area{padding:1rem 0 1.5rem;border-top:1px solid var(--border)}.input-area .error{color:#f87171;font-size:.85rem;margin-bottom:.5rem}.input-row{display:flex;gap:.5rem;align-items:flex-end}.input-row textarea{flex:1;min-height:44px;max-height:120px;padding:.75rem 1rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-surface);color:var(--text);font-family:inherit;font-size:.95rem;resize:none}.input-row textarea:focus{outline:none;border-color:var(--accent)}.input-row textarea::placeholder{color:var(--text-muted)}.input-row button{padding:.75rem 1.25rem;background:var(--accent);color:var(--bg-deep);border:none;border-radius:var(--radius);font-weight:500;cursor:pointer;font-family:inherit}.input-row button:hover:not(:disabled){background:var(--accent-muted)}.input-row button:disabled{opacity:.5;cursor:not-allowed}:root{--bg-deep: #0a0f14;--bg-surface: #111a24;--bg-elevated: #1a2634;--accent: #00c4b4;--accent-muted: #00a396;--text: #e6edf3;--text-muted: #8b9cad;--border: #24303d;--user-bubble: #1e3a4f;--radius: 12px}*{box-sizing:border-box}body{margin:0;font-family:Outfit,system-ui,sans-serif;background:var(--bg-deep);color:var(--text);min-height:100vh;line-height:1.6}#root{min-height:100vh;display:flex;flex-direction:column}code{font-family:JetBrains Mono,monospace;font-size:.9em}