:root {
  color-scheme: dark;
  --bg: #070a0f;
  --panel: #101721;
  --panel-2: #0d131c;
  --line: #243041;
  --text: #eef4ff;
  --muted: #8291a8;
  --green: #39d98a;
  --red: #ff5d73;
  --blue: #4aa3ff;
  --amber: #f4b860;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 244px;
  padding: 24px 18px;
  background: #090e15;
  border-right: 1px solid var(--line);
}

.brand {
  font-size: 21px;
  font-weight: 800;
  margin-bottom: 28px;
}

nav { display: grid; gap: 7px; }
nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 11px 12px;
  border-radius: 8px;
}
nav a.active, nav a:hover {
  color: var(--text);
  background: #141d2a;
}

.shell {
  margin-left: 244px;
  padding: 28px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

h1, h2, p { margin: 0; }
h1 { font-size: 30px; letter-spacing: 0; }
h2 { font-size: 17px; }
p { color: var(--muted); margin-top: 5px; }

button {
  border: 1px solid #2f8de8;
  background: #1171d8;
  color: white;
  border-radius: 8px;
  padding: 11px 16px;
  font-weight: 750;
  cursor: pointer;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.metrics.compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 18px;
}

.metrics article, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.metrics article { padding: 17px; }
.metrics span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.metrics strong { font-size: 24px; }

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.8fr);
  gap: 18px;
}

.page { display: none; }
.page.active { display: block; }

.panel { overflow: hidden; }
.panel-head {
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 13px 16px;
  border-bottom: 1px solid #1e2836;
  text-align: left;
  font-size: 14px;
}
th { color: var(--muted); font-weight: 650; }

.signals {
  display: grid;
  gap: 10px;
  padding: 14px;
}

.placeholder {
  color: var(--muted);
  padding: 22px;
}

.api-actions {
  padding: 0 18px 18px;
}

.status-box {
  margin: 0 18px 18px;
  padding: 14px;
  color: var(--muted);
  background: #0b111a;
  border: 1px solid #27364a;
  border-radius: 8px;
  white-space: pre-wrap;
  overflow: auto;
}

.billing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 18px;
}

.billing-grid article {
  background: #0b111a;
  border: 1px solid #27364a;
  border-radius: 8px;
  padding: 16px;
}

.billing-grid span {
  color: var(--muted);
  display: block;
  font-size: 13px;
  margin-bottom: 8px;
}

.billing-grid strong {
  display: block;
  font-size: 20px;
  margin-bottom: 8px;
}

.rule-list {
  padding: 0 18px 18px;
}

.rule-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.rule-grid article, .todo-list div {
  background: #0b111a;
  border: 1px solid #27364a;
  border-radius: 8px;
  padding: 14px;
}

.rule-grid span {
  color: var(--muted);
  display: block;
  font-size: 12px;
  margin-bottom: 6px;
}

.rule-grid strong {
  display: block;
  font-size: 15px;
  margin-bottom: 8px;
}

.rule-grid p {
  line-height: 1.45;
}

.todo-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  color: var(--amber);
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 18px;
}

label {
  color: var(--muted);
  display: grid;
  gap: 8px;
  font-size: 13px;
}

input, select {
  width: 100%;
  color: var(--text);
  background: #0b111a;
  border: 1px solid #27364a;
  border-radius: 8px;
  padding: 11px 12px;
}
.signal {
  border: 1px solid #253447;
  background: #0b111a;
  border-radius: 8px;
  padding: 12px;
}
.signal strong { display: block; margin-bottom: 7px; }
.signal small { color: var(--muted); line-height: 1.45; }

.long { color: var(--green); }
.short { color: var(--red); }
.flat { color: var(--amber); }

@media (max-width: 860px) {
  .sidebar { position: static; width: auto; }
  .shell { margin-left: 0; padding: 18px; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .metrics, .grid { grid-template-columns: 1fr; }
  .settings-grid, .billing-grid, .rule-grid { grid-template-columns: 1fr; }
}