:root{
  --red:#e2001a; --ink:#1f2329; --ink2:#3a4049; --bg:#f4f5f7; --card:#fff;
  --line:#e3e6ea; --muted:#6b7280; --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,'Segoe UI',sans-serif;background:var(--bg);color:var(--ink)}
#app{display:flex;min-height:100vh}
#sidebar{width:230px;background:var(--ink);color:#e8eaed;display:flex;flex-direction:column;padding:18px 12px;position:sticky;top:0;height:100vh}
.brand{font-size:22px;font-weight:800;letter-spacing:-.5px;padding:6px 10px 18px}
.brand .ver{font-size:11px;font-weight:500;color:#9aa0a6;margin-left:6px}
#sidebar nav{display:flex;flex-direction:column;gap:4px;flex:1}
.nav{background:transparent;border:0;color:#c7ccd1;text-align:left;padding:11px 12px;border-radius:9px;font-size:14px;cursor:pointer;transition:.15s}
.nav:hover{background:#2b3037;color:#fff}
.nav.active{background:var(--red);color:#fff;font-weight:600}
.userbox{font-size:12px;color:#9aa0a6;padding:10px;border-top:1px solid #2b3037;line-height:1.5}
#main{flex:1;padding:28px 34px;overflow:auto}
h1{font-size:24px;margin:0 0 18px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.muted{color:var(--muted);font-size:13px}
.center{text-align:center}.sub{font-size:11px;color:var(--muted)}
.loading{color:var(--muted);padding:40px;text-align:center}

.btn{background:var(--red);color:#fff;border:0;padding:9px 16px;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer}
.btn:hover{filter:brightness(.94)}
.btn.sm{padding:5px 11px;font-size:12.5px}
.btn.ghost{background:#eef0f2;color:var(--ink2)}
.btn.ghost:hover{background:#e3e6ea}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.card.warn{border-color:#f0b400;background:#fffaf0}
.grid-stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;margin-bottom:18px}
.stat{padding:14px 16px}
.stat-num{font-size:30px;font-weight:800;line-height:1}
.stat-lbl{font-size:12px;color:var(--muted);margin-top:4px}
.rowflex{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.rowflex .card{flex:1;min-width:200px}

.tbl{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tbl th{background:#fafbfc;text-align:left;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;padding:10px 12px;border-bottom:1px solid var(--line)}
.tbl td{padding:10px 12px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
.tbl tr:last-child td{border-bottom:0}
.tbl tr.inactive{opacity:.45}
.badge{color:#fff;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:600;white-space:nowrap}
code{background:#eef0f2;padding:1px 5px;border-radius:4px;font-size:12px}

.switch{position:relative;display:inline-block;width:42px;height:24px}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:#cbd0d6;border-radius:24px;transition:.2s;cursor:pointer}
.slider:before{content:"";position:absolute;height:18px;width:18px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.2s}
.switch input:checked+.slider{background:var(--red)}
.switch input:checked+.slider:before{transform:translateX(18px)}

.dropzone{border:2px dashed #c3c9d0;border-radius:var(--radius);padding:40px;text-align:center;background:var(--card);color:var(--muted)}
.dropzone.over{border-color:var(--red);background:#fff5f5}

.modal-wrap{position:fixed;inset:0;background:rgba(20,24,28,.5);display:flex;align-items:center;justify-content:center;z-index:50}
.modal{background:#fff;border-radius:14px;padding:22px;width:min(480px,92vw);max-height:90vh;overflow:auto}
.modal h2{margin:0 0 14px;font-size:19px}
.modal-body label{display:block;font-size:12px;color:var(--muted);margin-bottom:12px;font-weight:600}
.modal-body input{width:100%;margin-top:4px;padding:9px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}

#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--ink);color:#fff;padding:12px 20px;border-radius:10px;font-size:14px;opacity:0;transition:.25s;z-index:60;pointer-events:none}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#toast.err{background:var(--red)}

@media(max-width:760px){
  #app{flex-direction:column}
  #sidebar{width:100%;height:auto;position:static;flex-direction:row;flex-wrap:wrap;align-items:center}
  #sidebar nav{flex-direction:row;flex-wrap:wrap}
  .userbox{border-top:0}
  #main{padding:18px}
}