:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e8eef5;
  --muted: #8fa3b8;
  --accent: #3d9a6a;
  --danger: #c44;
  --warn: #c9a227;
  --border: #2a3544;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}
.hidden { display: none !important; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
.subtitle { color: var(--muted); margin: 0.25rem 0 0; }
.status-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
}
.pill {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}
.pill.online { border-color: var(--accent); }
.pill.delayed { border-color: var(--warn); }
.pill.offline { border-color: var(--danger); }
.tabs {
  display: flex;
  gap: 0.25rem;
  padding: 0 1rem;
  overflow-x: auto;
}
.tabs button {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 0.75rem 1rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.tabs button.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}
main { padding: 1rem 1.25rem 2rem; }
.tab { display: none; }
.tab.active { display: block; }
.grid.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.card h3 { margin: 0 0 0.5rem; font-size: 0.95rem; color: var(--muted); }
.value { font-size: 1.75rem; font-weight: 600; margin: 0; }
.stale .value { color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }
button.primary, button.danger, button.ghost, #login-btn {
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1rem;
  cursor: pointer;
  font-weight: 600;
}
button.primary { background: var(--accent); color: #fff; }
button.danger { background: var(--danger); color: #fff; }
button.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.login-card {
  max-width: 360px;
  margin: 4rem auto;
  padding: 2rem;
  background: var(--card);
  border-radius: 12px;
  border: 1px solid var(--border);
}
.login-card input {
  width: 100%;
  padding: 0.65rem;
  margin: 0.75rem 0;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.error { color: var(--danger); }
.note { color: var(--muted); font-size: 0.9rem; }
.schedule { columns: 2; margin: 0; padding-left: 1.2rem; }
.hist { list-style: none; padding: 0; margin: 0; font-size: 0.9rem; }
.hist li { padding: 0.35rem 0; border-bottom: 1px solid var(--border); }
.hist-wrap { margin: 0; }
.hist-empty { margin: 0; color: var(--muted); font-size: 0.9rem; }
.hist-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.hist-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.hist-table th,
.hist-table td {
  text-align: left;
  padding: 0.45rem 0.55rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  white-space: nowrap;
}
.hist-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
}
.hist-invalid { color: var(--warn); }
@media (max-width: 640px) {
  .hist-table thead { display: none; }
  .hist-table,
  .hist-table tbody,
  .hist-table tr,
  .hist-table th,
  .hist-table td { display: block; width: 100%; }
  .hist-table tr {
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
  }
  .hist-table td {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.12rem 0;
    border: none;
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .hist-table td::before {
    content: attr(data-label);
    flex: 0 0 7.5rem;
    color: var(--muted);
    font-size: 0.8rem;
  }
}
.cmd-msg { min-height: 1.2rem; color: var(--muted); font-size: 0.9rem; }