.sean-ai-chat{border:1px solid #ddd;border-radius:8px;max-width:720px;margin:1rem auto;font-family:system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.sean-ai-chat__header{padding:.75rem 1rem;font-weight:600;border-bottom:1px solid #eee}
.sean-ai-chat__messages{height:320px;overflow:auto;padding:1rem;background:#fafafa}
.sean-ai-chat__inputrow{display:flex;gap:.5rem;padding:.5rem;border-top:1px solid #eee}
.sean-ai-chat__inputrow textarea{flex:1;min-height:44px;max-height:120px;padding:.5rem}
.sean-ai-chat__inputrow button{padding:.5rem 1rem;cursor:pointer}
.msg{background:#fff;padding:.5rem .75rem;margin:.25rem 0;border-radius:6px;border:1px solid #f0f0f0}
.msg.user{background:#e8f0ff;border-color:#d2e3ff}
.msg.assistant{background:#f6fff0;border-color:#e5f6d5}
.msg.assistant.thinking{background:#fffbe6;border-color:#fff0b3}
.msg.assistant.error{background:#ffeaea;border-color:#ffc7c7;white-space:pre-wrap}
.sean-ai-chat__note{font-size:.8rem;color:#666;padding:.25rem .75rem .75rem}