:root{
  --bg:#0b0f17; --card:#141b27; --card2:#1a2230; --line:rgba(255,255,255,.09);
  --txt:#e7ecf5; --txt2:#9aa7bd; --txt3:#6b7688; --ind:#7d8cf5; --green:#3fcf8e;
  --amber:#e6a44c; --red:#e8615f;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--txt);font-family:Inter,system-ui,sans-serif;font-size:15px;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,textarea,select{font:inherit;color:var(--txt);background:var(--card2);border:1px solid var(--line);border-radius:10px;padding:10px 12px;outline:none;width:100%}
input:focus,textarea:focus,select:focus{border-color:rgba(125,140,245,.55)}
textarea{resize:vertical;line-height:1.5}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--card2);border:1px solid var(--line);border-radius:10px;padding:9px 14px;font-weight:600;cursor:pointer}
.btn:hover{background:#222c3d}
.btn.primary{background:linear-gradient(135deg,#8b99ff,#4a5ce0);border:none;color:#fff}
.btn.danger{color:var(--red);border-color:rgba(232,97,95,.4)}
.muted{color:var(--txt2)}
.spin{width:26px;height:26px;border:3px solid var(--line);border-top-color:var(--ind);border-radius:50%;animation:sp 1s linear infinite;margin:40px auto}
@keyframes sp{to{transform:rotate(360deg)}}

/* Layout */
.shell{display:flex;height:100vh}
.side{width:270px;flex-shrink:0;background:#0e131d;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:14px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.1rem;padding:4px 6px 14px}
.brand img{width:30px;height:30px;border-radius:8px}
.nav{display:flex;flex-direction:column;gap:3px}
.navi{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--txt2);font-weight:600;cursor:pointer}
.navi:hover{background:rgba(255,255,255,.04);color:var(--txt)}
.navi.on{background:rgba(125,140,245,.16);color:#cdd4ff}
.nav-sec{font-size:.68rem;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--txt3);padding:14px 12px 6px}
.conv-list{overflow:auto;flex:1;margin-top:4px}
.conv{display:flex;align-items:center;gap:8px;padding:9px 11px;border-radius:9px;color:var(--txt2);font-size:.88rem;cursor:pointer}
.conv:hover{background:rgba(255,255,255,.04);color:var(--txt)}
.conv.on{background:rgba(125,140,245,.14);color:#cdd4ff}
.conv .t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.conv .x{opacity:0;color:var(--txt3)}
.conv:hover .x{opacity:1}
.side-foot{border-top:1px solid var(--line);padding-top:10px;margin-top:6px}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:12px;padding:14px 22px;border-bottom:1px solid var(--line)}
.topbar .crumb{font-weight:700}
.content{flex:1;min-height:0;overflow:auto;padding:22px}

/* Chat */
.chat{display:flex;flex-direction:column;height:100%}
.chat-log{flex:1;overflow:auto;padding:22px;display:flex;flex-direction:column;gap:16px;max-width:900px;margin:0 auto;width:100%}
.msg{display:flex;gap:12px}
.msg .av{width:30px;height:30px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem}
.msg.user .av{background:linear-gradient(135deg,#8b99ff,#4a5ce0);color:#fff}
.msg.bot .av{background:rgba(255,255,255,.08);color:var(--ind)}
.msg .bubble{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 15px;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere;flex:1}
.msg.user .bubble{background:rgba(125,140,245,.1)}
.tool{font-size:.78rem;color:var(--amber);font-family:ui-monospace,Menlo,monospace;background:rgba(230,164,76,.08);border-radius:8px;padding:4px 9px;margin:2px 0;display:inline-block}
.chat-in{border-top:1px solid var(--line);padding:14px 22px;display:flex;gap:10px;max-width:900px;margin:0 auto;width:100%}
.chat-in textarea{flex:1;max-height:180px;min-height:46px}

/* Cards / stats / files */
.wrap{max-width:820px;margin:0 auto}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:16px}
.card h3{margin:0 0 6px;font-size:1rem}
.row{display:flex;gap:10px;align-items:center;margin:10px 0}
.row .lbl{width:150px;flex-shrink:0;color:var(--txt2);font-size:.86rem}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px}
.stat{background:var(--card2);border:1px solid var(--line);border-radius:12px;padding:14px}
.stat .k{font-size:.78rem;color:var(--txt3)}
.stat .v{font-size:1.5rem;font-weight:800;margin:4px 0}
.bar{height:8px;border-radius:5px;background:rgba(255,255,255,.08);overflow:hidden}
.bar i{display:block;height:100%;border-radius:5px}
.fb-head{display:flex;align-items:center;gap:6px;font-family:ui-monospace,Menlo,monospace;font-size:.85rem;margin-bottom:10px;color:var(--txt2);flex-wrap:wrap}
.fb-head a{color:var(--ind);cursor:pointer}
.fb-item{display:flex;align-items:center;gap:10px;padding:8px 11px;border-radius:9px;cursor:pointer}
.fb-item:hover{background:rgba(255,255,255,.04)}
.fb-item .sz{margin-left:auto;color:var(--txt3);font-size:.78rem}
pre.file{background:#0d1119;border:1px solid var(--line);border-radius:10px;padding:14px;overflow:auto;font-size:.82rem;line-height:1.5;max-height:60vh}

/* Gate */
#gate{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:20px}
.gate-card{width:100%;max-width:380px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:28px;text-align:center}
.gate-card img{width:52px;height:52px;border-radius:14px;margin-bottom:10px}
.gate-card h2{margin:0 0 4px}
.gate-card input{margin-bottom:11px;text-align:center}
.gate-card .btn{width:100%;padding:12px;margin-top:4px}
.gate-err{color:var(--red);font-size:.82rem;min-height:1.1em;margin-top:8px}
.gate-qr{background:#fff;border-radius:14px;padding:12px;width:200px;margin:6px auto 12px}
.gate-qr svg{width:100%;height:auto;display:block}
.gate-check{display:flex;align-items:center;gap:8px;font-size:.82rem;color:var(--txt2);margin:2px 0 12px}
.gate-check input{width:auto;margin:0}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:600;padding:4px 10px;border-radius:8px}
.pill.ok{background:rgba(63,207,142,.16);color:var(--green)}
.pill.no{background:rgba(255,255,255,.06);color:var(--txt3)}
.hidden{display:none!important}

@media(max-width:720px){
  .side{position:fixed;z-index:40;height:100%;transform:translateX(-100%);transition:transform .2s}
  .side.open{transform:none}
  .menu-btn{display:inline-flex}
}
.menu-btn{display:none}