:root {
  --bg: #0b0f14; --panel: #111823; --panel2: #0e141d; --border: #1f2b3a;
  --text: #e6edf3; --muted: #8b98a9; --accent: #3fb950; --accent2: #58a6ff;
  --danger: #f85149; --warn: #d29922; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--accent2); text-decoration: none; }
button { cursor: pointer; font: inherit; }
input, select, textarea { font: inherit; }

/* ---------- layout ---------- */
.shell { display: flex; min-height: 100vh; }
.side { width: 220px; background: var(--panel2); border-right: 1px solid var(--border); padding: 20px 14px; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 4px; }
.brand { font-size: 18px; font-weight: 700; padding: 6px 10px 18px; }
.brand span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left; background: none; border: 0; color: var(--muted); padding: 10px 12px; border-radius: 8px; font-size: 14px; }
.nav:hover { background: var(--panel); color: var(--text); }
.nav.active { background: var(--panel); color: var(--text); box-shadow: inset 2px 0 0 var(--accent); }
.side .foot { margin-top: auto; }
.main { flex: 1; padding: 24px; max-width: 1100px; }
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.page-sub { color: var(--muted); margin-bottom: 20px; }

/* ---------- cards & panels ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
.card .k { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.card .v { font-size: 26px; font-weight: 700; margin-top: 4px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 20px; }
.panel h3 { font-size: 15px; margin-bottom: 12px; }

/* ---------- table ---------- */
table { width: 100%; border-collapse: collapse; }
th { text-align: left; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .05em; padding: 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
.mono { font-family: var(--mono); font-size: 12.5px; }
.muted { color: var(--muted); }

/* ---------- pills & dots ---------- */
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill.green { background: rgba(63,185,80,.15); color: var(--accent); }
.pill.red { background: rgba(248,81,73,.15); color: var(--danger); }
.pill.yellow { background: rgba(210,153,34,.15); color: var(--warn); }
.pill.blue { background: rgba(88,166,255,.15); color: var(--accent2); }
.pill.gray { background: rgba(139,152,169,.15); color: var(--muted); }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.green { background: var(--accent); box-shadow: 0 0 6px var(--accent); }
.dot.gray { background: var(--muted); }

/* ---------- buttons & forms ---------- */
.btn { background: var(--accent); color: #06130a; border: 0; border-radius: 8px; padding: 9px 16px; font-weight: 700; }
.btn.secondary { background: var(--panel2); color: var(--text); border: 1px solid var(--border); }
.btn.danger { background: var(--danger); color: #fff; }
.btn.small { padding: 5px 10px; font-size: 12.5px; border-radius: 6px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.field label { color: var(--muted); font-size: 13px; }
.field input, .field select, .field textarea { background: var(--panel2); border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 10px 12px; }
.field input:focus { outline: 2px solid var(--accent2); border-color: transparent; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }

/* ---------- login ---------- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-box { width: 100%; max-width: 360px; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 28px; }
.login-box h1 { font-size: 20px; margin-bottom: 4px; }
.login-box p { color: var(--muted); margin-bottom: 20px; }

/* ---------- modal ---------- */
.modal-back { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: center; padding: 16px; z-index: 10; }
.modal { width: 100%; max-width: 460px; background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 22px; }
.modal h3 { margin-bottom: 16px; }
.keybox { background: var(--panel2); border: 1px dashed var(--accent); border-radius: 8px; padding: 12px; font-family: var(--mono); font-size: 13px; overflow-wrap: anywhere; margin: 10px 0; }

/* ---------- misc ---------- */
.chart { width: 100%; height: 180px; display: block; }
.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--panel); border: 1px solid var(--accent); color: var(--text); padding: 10px 18px; border-radius: 10px; z-index: 20; }
.error-text { color: var(--danger); font-size: 13px; margin-top: 8px; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.filters input, .filters select { background: var(--panel2); border: 1px solid var(--border); color: var(--text); border-radius: 8px; padding: 8px 10px; }
.pair-code { font-family: var(--mono); font-size: 28px; letter-spacing: .25em; text-align: center; background: var(--panel2); border: 1px dashed var(--accent); border-radius: 10px; padding: 16px; margin: 12px 0; }
.empty { color: var(--muted); text-align: center; padding: 28px 0; }

@media (max-width: 760px) {
  .side { width: 64px; padding: 14px 8px; }
  .side .brand { font-size: 13px; padding: 4px 4px 14px; }
  .side .nav span.label { display: none; }
  .main { padding: 14px; }
  table { font-size: 12.5px; }
}