:root{
  --bg:#0b111d; --surface:#141c2b; --surface2:#1b2536; --border:#25324a;
  --text:#e6edf6; --muted:#8794a8; --dim:#5e6b7d;
  --blue:#3b82f6; --indigo:#6366f1; --pos:#34d399; --neg:#f87171; --warn:#fbbf24;
  --radius:10px;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter','Segoe UI',system-ui,sans-serif;background:var(--bg);color:var(--text);
  -webkit-font-smoothing:antialiased;display:flex;min-height:100vh}
a{color:inherit;text-decoration:none}
code{background:var(--surface2);border:1px solid var(--border);padding:1px 5px;border-radius:4px;font-size:.85em}

/* Sidebar */
.sidebar{width:210px;background:linear-gradient(180deg,#0c121e,#080d16);border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding:14px 10px;position:fixed;inset:0 auto 0 0;min-height:100vh}
.brand{font-weight:800;font-size:1.05rem;padding:8px 10px 16px;display:flex;gap:8px;align-items:center}
.brand span{background:linear-gradient(90deg,#fff,#93c5fd);-webkit-background-clip:text;background-clip:text;color:transparent}
.sidebar a{display:block;padding:10px 12px;border-radius:8px;color:var(--muted);font-size:.86rem;font-weight:500;margin-bottom:2px}
.sidebar a:hover{background:rgba(255,255,255,.05);color:#e8eef6}
.sidebar a.active{background:linear-gradient(90deg,rgba(59,130,246,.22),rgba(99,102,241,.10));color:#fff;box-shadow:inset 3px 0 0 var(--blue)}
.sidebar .spacer{flex:1}

/* Main */
main{margin-left:210px;flex:1;min-width:0;padding:18px 22px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.topbar h1{font-size:1.2rem;font-weight:700}

/* Pills */
.pills{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.pill{font-size:.72rem;font-weight:700;padding:4px 10px;border-radius:99px;border:1px solid var(--border);background:var(--surface2)}
.pill-on{background:rgba(52,211,153,.15);color:var(--pos);border-color:transparent}
.pill-off{background:rgba(248,113,113,.12);color:var(--neg);border-color:transparent}
.pill-warn{background:rgba(251,191,36,.15);color:var(--warn);border-color:transparent}
.pill-info{background:rgba(59,130,246,.16);color:#93c5fd;border-color:transparent}
.pill-danger{background:var(--neg);color:#fff;border-color:transparent}
.pill-muted{color:var(--muted)}

/* Cards / KPI */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;overflow:hidden}
.card-head{padding:11px 14px;font-weight:700;font-size:.85rem;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;gap:8px}
.kpi{padding:14px 16px}
.kpi-label{font-size:.66rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:700}
.kpi-value{font-size:1.35rem;font-weight:800;margin-top:6px;font-variant-numeric:tabular-nums}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.two-col>*{min-width:0}

/* Tables */
.tbl-wrap{width:100%;overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.8rem}
thead th{text-align:left;padding:9px 12px;font-size:.66rem;text-transform:uppercase;letter-spacing:.04em;
  color:var(--muted);border-bottom:1px solid var(--border);white-space:nowrap}
tbody td{padding:8px 12px;border-bottom:1px solid var(--border);white-space:nowrap;font-variant-numeric:tabular-nums}
tbody tr:hover{background:rgba(59,130,246,.06)}
.row-off{opacity:.5}
.center{text-align:center}
.muted{color:var(--muted)}
.small{font-size:.74rem}
.pos{color:var(--pos)}.neg{color:var(--neg)}
.resp{max-width:280px;overflow:hidden;text-overflow:ellipsis}
.actions{display:flex;gap:6px;flex-wrap:wrap}
.actions form{display:inline}

/* Tags */
.tag{display:inline-block;padding:2px 8px;border-radius:99px;font-size:.66rem;font-weight:700}
.tag-armed{background:rgba(59,130,246,.16);color:#93c5fd}
.tag-buy_sent,.tag-sell_sent{background:rgba(251,191,36,.16);color:var(--warn)}
.tag-bought{background:rgba(52,211,153,.16);color:var(--pos)}
.tag-sold{background:var(--surface2);color:var(--muted)}
.tag-error{background:rgba(248,113,113,.16);color:var(--neg)}
.tag-disabled{background:var(--surface2);color:var(--dim)}
.tag-info{background:rgba(59,130,246,.16);color:#93c5fd}
.tag-warn{background:rgba(251,191,36,.16);color:var(--warn)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:5px;padding:8px 14px;border-radius:8px;font-size:.82rem;
  font-weight:600;cursor:pointer;border:1px solid transparent;background:var(--surface2);color:var(--text)}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--indigo));color:#fff}
.btn-outline{background:transparent;border-color:var(--border);color:var(--text)}
.btn-outline:hover{background:var(--surface2)}
.btn-danger{background:var(--neg);color:#fff}
.btn-sm{padding:6px 11px;font-size:.76rem}
.btn-xs{padding:3px 8px;font-size:.7rem}

/* Forms */
.form,.card form{padding:14px}
.fg{margin-bottom:12px;display:flex;flex-direction:column;gap:5px}
.fg label{font-size:.75rem;font-weight:600;color:var(--muted)}
.fg input,.fg select{padding:9px 11px;border:1px solid var(--border);border-radius:8px;background:var(--surface2);
  color:var(--text);font-size:.86rem}
.fg input:focus,.fg select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(59,130,246,.25)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.callout{background:var(--surface2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:.78rem;color:var(--muted);margin-top:6px}
.callout.warn{background:rgba(251,191,36,.10);border-color:rgba(251,191,36,.3);color:#facc79}

/* Toggle switch */
.toggle-row{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}
.switch{position:relative;width:44px;height:24px;flex:none;cursor:pointer}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;background:var(--surface2);border:1px solid var(--border);border-radius:99px;transition:.2s}
.switch span:before{content:'';position:absolute;width:16px;height:16px;left:3px;top:3px;background:var(--muted);border-radius:50%;transition:.2s}
.switch input:checked+span{background:rgba(52,211,153,.3);border-color:var(--pos)}
.switch input:checked+span:before{transform:translateX(20px);background:var(--pos)}
.switch.danger input:checked+span{background:rgba(248,113,113,.3);border-color:var(--neg)}
.switch.danger input:checked+span:before{background:var(--neg)}

/* Alerts */
.alert{padding:10px 14px;border-radius:8px;font-size:.82rem;font-weight:600;margin-bottom:14px}
.alert-ok{background:rgba(52,211,153,.15);color:var(--pos)}
.alert-error{background:rgba(248,113,113,.15);color:var(--neg)}
.alert-message{background:var(--surface2);color:var(--text)}

/* Logs */
.log-list{padding:8px 12px;font-size:.76rem;font-family:ui-monospace,monospace;max-height:360px;overflow:auto}
.log-list.tall{max-height:70vh}
.log-row{padding:4px 0;border-bottom:1px solid rgba(255,255,255,.04);display:flex;gap:8px;flex-wrap:wrap}
.log-error{color:var(--neg)}.log-warn{color:var(--warn)}

/* Login */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:32px;width:340px}
.login-logo{font-size:2.4rem;text-align:center}
.login-title{font-size:1.2rem;font-weight:800;text-align:center;margin-top:6px}
.login-sub{font-size:.78rem;color:var(--muted);text-align:center;margin-bottom:18px}
.login-card label{font-size:.75rem;font-weight:600;color:var(--muted);display:block;margin-bottom:5px}
.login-card input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface2);color:var(--text)}

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  body { flex-direction: column; }               /* stack: sidebar on top, main below */
  .sidebar {
    position: sticky; top: 0; inset: auto; width: 100%; min-height: auto; z-index: 50;
    flex-direction: row; align-items: center; flex-wrap: nowrap;
    gap: 4px; padding: 8px 10px; overflow-x: auto;
    border-right: none; border-bottom: 1px solid var(--border);
  }
  .sidebar::-webkit-scrollbar { height: 0; }      /* hide the strip scrollbar */
  .sidebar .brand { padding: 0 6px 0 2px; font-size: .95rem; white-space: nowrap; }
  .sidebar a { padding: 8px 11px; font-size: .8rem; white-space: nowrap; }
  .sidebar .spacer { flex: 0 0 auto; }
  main { margin-left: 0; padding: 14px; }
  .topbar { flex-wrap: wrap; gap: 8px; }
  .topbar h1 { font-size: 1.05rem; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .two-col, .grid3 { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  main { padding: 12px 10px; }
  .cards { grid-template-columns: 1fr 1fr; gap: 8px; }
  .card { margin-bottom: 12px; }
  .kpi { padding: 12px; }
  .kpi-value { font-size: 1.15rem; }
  .card-head { font-size: .8rem; padding: 10px 12px; }
  .card form, .form { padding: 12px; }
  .grid2 { grid-template-columns: 1fr; }
  table { font-size: .74rem; }
  thead th, tbody td { padding: 7px 9px; }
  .pill { font-size: .67rem; padding: 3px 8px; }
  .btn { padding: 8px 12px; }
  .login-card { width: 100%; max-width: 380px; padding: 26px 22px; }
  .topbar h1 { font-size: 1rem; }
}