:root {
  --bg: #0f1419;
  --panel: #1a212b;
  --panel2: #222b38;
  --line: #2c3848;
  --text: #e6edf3;
  --muted: #8b98a8;
  --accent: #4c8bf5;
  --green: #2ecc71;
  --red: #e74c3c;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.hidden { display: none !important; }
.muted { color: var(--muted); font-weight: 400; font-size: 0.85em; }
.error { color: var(--red); margin-top: 10px; min-height: 18px; font-size: 0.9em; }

/* login */
.login-wrap { min-height: 100vh; display: grid; place-items: center; }
.login-card {
  background: var(--panel); padding: 36px; border-radius: 14px; width: 320px;
  border: 1px solid var(--line); box-shadow: 0 12px 40px rgba(0,0,0,.4);
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card input, .login-card button { width: 100%; margin-top: 14px; }
input, select, button {
  font: inherit; padding: 9px 12px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--panel2); color: var(--text); outline: none;
}
button { background: var(--accent); border: none; cursor: pointer; font-weight: 600; }
button:hover { filter: brightness(1.08); }
button.ghost { background: transparent; border: 1px solid var(--line); color: var(--muted); }
button.danger { background: transparent; border: 1px solid var(--red); color: var(--red); }

/* topbar */
.topbar {
  display: flex; align-items: center; gap: 18px; padding: 10px 18px;
  background: var(--panel); border-bottom: 1px solid var(--line); flex-wrap: wrap;
}
.brand { font-weight: 700; }
.tabs { display: flex; gap: 6px; }
.tab { background: transparent; color: var(--muted); border: none; padding: 8px 14px; border-radius: 8px; }
.tab.active { background: var(--panel2); color: var(--text); }
.controls { margin-left: auto; display: flex; gap: 8px; align-items: center; }
#refreshBtn { padding: 8px 12px; }

main { padding: 18px; max-width: 1280px; margin: 0 auto; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 16px; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px;
}
.card h3 { margin: 0 0 12px; font-size: 15px; }
.stat { text-align: center; }
.stat-val { font-size: 26px; font-weight: 700; }
.stat-lbl { color: var(--muted); font-size: 12px; margin-top: 4px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.card.wide { grid-column: 1 / -1; }

.bars { display: flex; flex-direction: column; gap: 8px; }
.bar-row { display: grid; grid-template-columns: 160px 1fr 64px; align-items: center; gap: 10px; font-size: 13px; }
.bar-row .label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { background: var(--panel2); border-radius: 6px; height: 16px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--accent); border-radius: 6px; }
.bar-row .val { text-align: right; color: var(--muted); }

/* tables */
.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl th, .tbl td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); }
.tbl th { color: var(--muted); font-weight: 600; }
.tbl input.inline { background: transparent; border: 1px solid transparent; padding: 4px 6px; }
.tbl input.inline:focus { border-color: var(--line); background: var(--panel2); }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot.on { background: var(--green); }
.dot.off { background: #55606e; }
.pill { padding: 2px 8px; border-radius: 20px; font-size: 11px; color: #fff; }

.rule-form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }

@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .grid { grid-template-columns: 1fr; }
  .bar-row { grid-template-columns: 110px 1fr 56px; }
}