:root {
  --bg: #0f1420;
  --panel: #161d2e;
  --panel-alt: #1d2537;
  --border: #2a3450;
  --text: #e6e9f2;
  --text-dim: #8a93ab;
  --accent: #4f8cff;
  --green: #33c17f;
  --amber: #e0a840;
  --red: #e0596b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

header h1 { font-size: 18px; margin: 0; font-weight: 600; }
header .sub { color: var(--text-dim); font-size: 12px; margin-top: 2px; }

nav.tabs {
  display: flex;
  gap: 4px;
  padding: 0 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

nav.tabs button {
  background: none;
  border: none;
  color: var(--text-dim);
  padding: 12px 16px;
  font-size: 13px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}

nav.tabs button.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

main { padding: 24px; max-width: 1100px; margin: 0 auto; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
}

.card h2 { font-size: 14px; margin: 0 0 12px; color: var(--text); text-transform: uppercase; letter-spacing: 0.04em; }
.card h3 { font-size: 13px; margin: 0 0 8px; color: var(--text-dim); }

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }

input, select, textarea {
  background: var(--panel-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 13px;
}

textarea { width: 100%; font-family: monospace; min-height: 120px; }

button.btn {
  background: var(--accent);
  border: none;
  color: white;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}
button.btn.secondary { background: var(--panel-alt); border: 1px solid var(--border); color: var(--text); }
button.btn.danger { background: var(--red); }
button.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}
.badge.healthy, .badge.buy { background: rgba(51,193,127,0.15); color: var(--green); }
.badge.degraded, .badge.rate_limited, .badge.hold { background: rgba(224,168,64,0.15); color: var(--amber); }
.badge.circuit_open, .badge.disabled, .badge.sell { background: rgba(224,89,107,0.15); color: var(--red); }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 500; }

.hint { color: var(--text-dim); font-size: 12px; margin-top: 6px; }
.error-box { background: rgba(224,89,107,0.1); border: 1px solid var(--red); color: var(--red); padding: 10px; border-radius: 6px; font-size: 13px; margin-top: 10px; }
.success-box { background: rgba(51,193,127,0.1); border: 1px solid var(--green); color: var(--green); padding: 10px; border-radius: 6px; font-size: 13px; margin-top: 10px; }

pre { background: var(--panel-alt); padding: 10px; border-radius: 6px; overflow-x: auto; font-size: 12px; }

.panel-list { display: flex; gap: 10px; flex-wrap: wrap; }
.panel-tag { background: var(--panel-alt); border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; font-size: 12px; display: flex; align-items: center; gap: 8px; }

.logged-out-notice { color: var(--text-dim); font-size: 13px; }