*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:#f7f7f9;color:#111;font-size:14px}
.hidden{display:none!important}
.topbar{display:flex;align-items:center;gap:16px;padding:12px 20px;background:#111827;color:#fff;position:sticky;top:0;z-index:5}
.brand{font-weight:700}
.topbar select{background:#1f2937;color:#fff;border:1px solid #374151;padding:6px 10px;border-radius:6px;max-width:220px}
.topbar nav{display:flex;gap:12px;flex:1;margin-left:12px}
.topbar nav a{color:#e5e7eb;text-decoration:none;padding:6px 10px;border-radius:4px;cursor:pointer;font-size:13px}
.topbar nav a.active{background:rgba(255,255,255,.14)}
.chat-btn{background:#f59e0b;color:#111;border:none;font-size:18px;padding:6px 12px;border-radius:6px;cursor:pointer}
main{padding:24px;max-width:1200px;margin:0 auto}
.view{background:#fff;border-radius:8px;padding:20px;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.card{background:#fff;border-radius:8px;padding:24px;max-width:420px;margin:60px auto;box-shadow:0 4px 16px rgba(0,0,0,.06)}
h2{font-size:18px;font-weight:600;margin-bottom:16px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.stat{background:#f9fafb;padding:16px;border-radius:8px;border:1px solid #eee}
.stat label{color:#666;font-size:12px;display:block;margin-bottom:6px}
.stat > div{font-size:22px;font-weight:700}
.row{display:flex;gap:12px;flex-wrap:wrap}
.btn,button{display:inline-block;background:#0f766e;color:#fff;padding:9px 16px;border-radius:6px;text-decoration:none;font-weight:600;font-size:13px;border:none;cursor:pointer}
.muted{color:#666;font-size:12px}
input,select{padding:8px 10px;border:1px solid #d4d4d8;border-radius:6px;font-size:14px}

/* Chat panel */
.chat-panel{position:fixed;bottom:24px;right:24px;width:360px;height:500px;background:#fff;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.2);display:flex;flex-direction:column;z-index:20}
.chat-panel header{background:#0f766e;color:#fff;padding:12px 14px;border-radius:12px 12px 0 0;font-weight:600;display:flex;justify-content:space-between;align-items:center}
.chat-panel header button{background:none;color:#fff;font-size:20px;padding:0;width:24px;height:24px}
.chat-msgs{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px}
.chat-msgs .u,.chat-msgs .a{padding:8px 12px;border-radius:12px;max-width:85%;white-space:pre-wrap;font-size:13px;line-height:1.4}
.chat-msgs .u{background:#0f766e;color:#fff;align-self:flex-end}
.chat-msgs .a{background:#f3f4f6;color:#111;align-self:flex-start}
.chat-panel form{display:flex;gap:6px;padding:10px;border-top:1px solid #eee}
.chat-panel input{flex:1}