:root {
  --bg: #0f141a;
  --card: #1a212b;
  --card2: #222b38;
  --border: #2c3947;
  --text: #d7dee8;
  --muted: #7d8b9c;
  --accent: #4da3ff;
  --green: #2ecc71;
  --red: #e74c3c;
  --amber: #f39c12;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.pos { color: var(--green); }
.neg { color: var(--red); }

.center-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

/* ─── login ─── */
.login-card {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-card h1 { margin: 0; font-size: 22px; text-align: center; }
.login-card p { margin: 0; text-align: center; }

input[type="password"], input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--text);
  font-size: 15px;
}
input:focus { outline: 1px solid var(--accent); }

.btn {
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--text);
  font-size: 15px;
  cursor: pointer;
  transition: filter .15s;
}
.btn:hover { filter: brightness(1.15); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #08131f; font-weight: 600; }
.btn.ghost { background: transparent; }

.error { color: var(--red); font-size: 13px; }
.ok { color: var(--green); font-size: 13px; }

/* ─── header ─── */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.brand { font-weight: 700; font-size: 17px; }
.header-right { display: flex; align-items: center; gap: 10px; }

.badge {
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .5px;
}
.badge.warn { color: var(--amber); border-color: var(--amber); }

/* ─── layout ─── */
main.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
@media (max-width: 800px) { main.grid { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}
.card-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  margin-bottom: 14px;
}
.span-2 { grid-column: span 2; }
@media (max-width: 800px) { .span-2 { grid-column: span 1; } }

/* ─── toggle ─── */
.toggle-row { display: flex; align-items: center; gap: 14px; margin-bottom: 6px; }

.switch { position: relative; display: inline-block; width: 56px; height: 30px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; inset: 0;
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: background .2s;
  cursor: pointer;
}
.slider::before {
  content: "";
  position: absolute;
  width: 22px; height: 22px;
  left: 3px; top: 3px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform .2s, background .2s;
}
.switch input:checked + .slider { background: rgba(46, 204, 113, .25); border-color: var(--green); }
.switch input:checked + .slider::before { transform: translateX(26px); background: var(--green); }

.state-label { font-weight: 700; font-size: 18px; }
.state-label.on { color: var(--green); }
.state-label.off { color: var(--muted); }

.busy { color: var(--amber); font-size: 13px; }

.error-banner {
  margin: 10px 0;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--red);
  color: var(--red);
  font-size: 13px;
  word-break: break-word;
}

/* ─── key-value ─── */
.kv { margin: 0; display: grid; gap: 8px; }
.kv > div { display: flex; justify-content: space-between; gap: 12px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 600; text-align: right; word-break: break-all; }

/* ─── position ─── */
.pos-side {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 12px;
  padding: 6px 14px;
  border-radius: 8px;
  display: inline-block;
}
.pos-side.long { color: var(--green); background: rgba(46, 204, 113, .12); }
.pos-side.short { color: var(--red); background: rgba(231, 76, 60, .12); }

/* ─── settings form ─── */
.settings-form { display: grid; gap: 12px; }
.settings-form label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }

/* ─── totals ─── */
.total-pnl { font-size: 34px; font-weight: 800; margin: 4px 0 12px; }
.stats { display: flex; gap: 24px; }
.stats > div { display: flex; flex-direction: column; }
.stats span:first-child { font-size: 20px; font-weight: 700; }

/* ─── trades table ─── */
.table-wrap { overflow-x: auto; }
.trades-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.trades-table th, .trades-table td { padding: 8px 10px; text-align: right; }
.trades-table th:first-child, .trades-table td:first-child,
.trades-table th:nth-child(2), .trades-table td:nth-child(2),
.trades-table th:nth-child(6), .trades-table td:nth-child(6) { text-align: left; }
.trades-table th {
  color: var(--muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.trades-table tbody tr:hover { background: var(--card2); }
.trades-table td { border-bottom: 1px solid var(--border); white-space: nowrap; }
.side-long { color: var(--green); font-weight: 600; }
.side-short { color: var(--red); font-weight: 600; }