*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#f5f5f5;min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px}
.chat-container{width:100%;max-width:500px;background:#fff;border-radius:16px;box-shadow:0 4px 20px rgba(0,0,0,.1);overflow:hidden;display:flex;flex-direction:column;height:600px}
.chat-header{background:linear-gradient(135deg,#c45c28,#a84a1a);color:#fff;padding:20px;text-align:center}
.chat-header h1{font-size:1.5rem;margin-bottom:5px}
.chat-header p{opacity:.9;font-size:.9rem}
.chat-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}
.message{max-width:80%;padding:12px 16px;border-radius:16px;line-height:1.5}
.message.user{background:#c45c28;color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.message.bot,.message.thinking{background:#f0f0f0;color:#333;align-self:flex-start;border-bottom-left-radius:4px}
.message.thinking{color:#999;font-style:italic}
.chat-input-area{padding:16px;border-top:1px solid #eee;display:flex;gap:10px}
#user-input{flex:1;padding:12px 16px;border:1px solid #ddd;border-radius:24px;font-size:1rem;outline:0}
#user-input:focus{border-color:#c45c28}
#send-btn{padding:12px 24px;background:#c45c28;color:#fff;border:0;border-radius:24px;font-size:1rem;cursor:pointer;transition:background .2s}
#send-btn:hover{background:#a84a1a}
#send-btn:disabled{background:#ccc;cursor:not-allowed}
.tool-buttons{display:flex;gap:8px;margin-top:8px}
.tool-btn{padding:8px 16px;border-radius:8px;border:0;cursor:pointer;font-size:.9rem}
.tool-btn.approve{background:#10b981;color:#fff}
.tool-btn.cancel{background:#f0f0f0;color:#666}
.scheduling-card{background:#f8f9fa;border:1px solid #e0e0e0;border-radius:12px;padding:16px;margin-top:8px}
.scheduling-card h3{margin-bottom:8px;color:#333}
.scheduling-card a{display:inline-block;background:#c45c28;color:#fff;padding:10px 20px;border-radius:8px;text-decoration:none;margin-top:8px}