:root {
  --bg: #0b1014;
  --bg-2: #121920;
  --panel: #161e26;
  --panel-2: #1c262f;
  --line: #2a3844;
  --text: #e7eef4;
  --muted: #8aa0b2;
  --accent: #3ee0a0;
  --accent-dim: #1f6f52;
  --warn: #e7b549;
  --danger: #e15d5d;
  --buy: #3ee0a0;
  --sell: #e15d5d;
  --mono: "IBM Plex Mono", "SF Mono", ui-monospace, Menlo, monospace;
  --sans: "IBM Plex Sans", "Noto Sans SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: var(--sans); }
a { color: var(--accent); }
button, input, select, textarea { font-family: inherit; }
button { cursor: pointer; }

.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(800px 400px at 15% 0%, #143326 0%, transparent 50%),
    var(--bg);
}
.login-card {
  width: 360px;
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 28px 26px 24px;
}
.login-card h1 { margin: 0 0 6px; font-size: 20px; letter-spacing: 0.04em; }
.login-card p { margin: 0 0 18px; color: var(--muted); font-size: 13px; }
.login-card label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.login-card input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 10px 12px;
  margin-bottom: 14px;
}
.err { color: var(--danger); font-size: 13px; min-height: 18px; margin: 0 0 10px; }

.topbar {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
}
.brand { display: flex; gap: 10px; align-items: baseline; }
.brand b { letter-spacing: 0.08em; }
.brand span { color: var(--muted); font-size: 12px; }
.topbar form { margin: 0; }

.nav {
  display: flex;
  gap: 4px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 5;
}
.nav button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 7px 12px;
  font-size: 13px;
}
.nav button.active {
  color: var(--text);
  border-color: var(--line);
  background: var(--panel);
}

.page { display: none; padding: 18px 20px 40px; }
.page.active { display: block; }

.grid { display: grid; gap: 14px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 980px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px;
}
.card h2, .card h3 { margin: 0 0 12px; font-size: 15px; font-weight: 600; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.muted { color: var(--muted); font-size: 12px; }
.mono { font-family: var(--mono); font-size: 12px; }

.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #4a5a66; display: inline-block;
}
.dot.on { background: var(--accent); box-shadow: 0 0 8px var(--accent-dim); }
.dot.err { background: var(--danger); }

.btn {
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 8px 12px;
  font-size: 13px;
}
.btn.primary { background: #163528; border-color: var(--accent-dim); color: var(--accent); }
.btn.danger { background: #3a1c1c; border-color: #6e2e2e; color: #ffb4b4; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

label.f { display: block; font-size: 12px; color: var(--muted); margin: 8px 0 4px; }
input, select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 8px 10px;
  font-size: 13px;
}
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; }
@media (max-width: 720px) { .fields { grid-template-columns: 1fr; } }

table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { text-align: left; padding: 8px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; }
.ok { color: var(--buy); }
.fail { color: var(--danger); }
.buy { color: var(--buy); }
.sell { color: var(--sell); }
.toast {
  position: fixed; right: 16px; bottom: 16px;
  background: var(--panel-2); border: 1px solid var(--line);
  padding: 10px 14px; font-size: 13px; display: none; max-width: 420px;
}
.stat { font-family: var(--mono); font-size: 22px; }
.check { display: flex; gap: 8px; align-items: center; margin-top: 10px; color: var(--muted); font-size: 13px; }
.check input { width: auto; }
.badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  color: var(--accent);
  margin-right: 4px;
}
.hint { color: var(--muted); font-size: 12px; margin-top: 8px; line-height: 1.5; }
.kpi { display: flex; justify-content: space-between; margin-bottom: 10px; }
.kpi span { color: var(--muted); font-size: 12px; }