* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: system-ui, sans-serif; background: #f5f5f5; padding: 20px; }
#app { max-width: 800px; margin: 0 auto; background: white; border-radius: 12px; padding: 24px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
header { border-bottom: 2px solid #eee; padding-bottom: 16px; margin-bottom: 24px; }
h1 { font-size: 28px; color: #1a1a1a; }
h2 { font-size: 20px; color: #333; margin: 20px 0 12px; }
ul { list-style: none; padding: 0; }
li { padding: 8px 12px; margin: 4px 0; background: #f9f9f9; border-radius: 6px; }
#messages { max-height: 300px; overflow-y: auto; border: 1px solid #ddd; border-radius: 8px; padding: 12px; margin-bottom: 12px; background: #fafafa; }
.message { margin-bottom: 8px; padding: 6px 10px; background: #e3f2fd; border-radius: 6px; }
.message strong { color: #1565c0; }
.message small { color: #888; font-size: 0.8em; margin-left: 8px; }
#chat-form { display: flex; gap: 8px; flex-wrap: wrap; }
#chat-form select, #chat-form input, #chat-form button { padding: 8px 12px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; }
#chat-form button { background: #1976d2; color: white; border: none; cursor: pointer; }
#chat-form button:hover { background: #1565c0; }
#results-list li { background: #f1f8e9; }