:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --text: #1a1d23;
  --muted: #6b7280;
  --border: #e2e5ea;
  --accent: #3b82f6;
  --ok: #10b981;
  --warn: #f59e0b;
  --err: #ef4444;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --card-bg: #1e2127;
    --text: #e7e9ec;
    --muted: #9aa1ab;
    --border: #2c313a;
  }
}

* { box-sizing: border-box; }

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

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
}

.brand {
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.topbar nav a {
  margin-left: 16px;
  color: var(--text);
  text-decoration: none;
}

.topbar nav a:hover { color: var(--accent); }

.topbar .user {
  margin-left: 16px;
  color: var(--muted);
}

h1 { font-size: 1.5rem; margin: 8px 0 16px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
h3 { margin: 0 0 4px; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 20px;
}

.auth-card { max-width: 380px; margin: 40px auto; }

form label {
  display: block;
  margin-bottom: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

form input, form select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.inline-form {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}
.inline-form input, .inline-form select { width: auto; flex: 1; margin-top: 0; }
.inline-form label { margin-bottom: 0; flex: 1; }

button, .button-link {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 9px 16px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button:hover, .button-link:hover { filter: brightness(1.08); }

.flash {
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}
.flash-error { background: color-mix(in srgb, var(--err) 15%, transparent); color: var(--err); }
.flash-success { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }

.key-reveal { border-color: var(--ok); }
.key-box {
  display: block;
  background: var(--bg);
  padding: 12px;
  border-radius: 6px;
  word-break: break-all;
  font-size: 0.95rem;
  margin-top: 8px;
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.device-card h3 a { color: var(--text); text-decoration: none; }
.device-card h3 a:hover { color: var(--accent); }

.status { font-size: 0.85rem; margin: 4px 0 10px; }
.status-online { color: var(--ok); }
.status-stale { color: var(--warn); }
.status-offline { color: var(--err); }

.metrics-mini {
  display: grid;
  grid-template-columns: auto auto;
  gap: 2px 10px;
  font-size: 0.88rem;
  margin: 0 0 10px;
}
.metrics-mini dt { color: var(--muted); }
.metrics-mini dd { margin: 0; text-align: right; }

.key-prefix { font-size: 0.8rem; color: var(--muted); margin: 0 0 10px; }

.mini-chart { width: 100%; height: 70px; margin: 4px 0 12px; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.values-group h3 { font-size: 0.95rem; margin-bottom: 6px; }
.cells-mini { grid-template-columns: auto auto auto auto; }

.chart-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}
.chart-controls label { margin-bottom: 0; min-width: 160px; }
.chart-controls select[multiple] { min-width: 220px; }

fieldset {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
}
legend { color: var(--muted); font-size: 0.85rem; padding: 0 4px; }
.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 4px 12px 4px 0;
  font-size: 0.9rem;
}
.checkbox-label input { width: auto; }

.muted { color: var(--muted); }

canvas { max-width: 100%; }

.chart-error {
  color: var(--err);
  background: color-mix(in srgb, var(--err) 12%, transparent);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 0.88rem;
}

.owner-badge { font-size: 0.8rem; margin: -2px 0 6px; }

.outlier-warning {
  font-size: 0.82rem;
  color: var(--warn);
  background: color-mix(in srgb, var(--warn) 12%, transparent);
  border-radius: 6px;
  padding: 6px 8px;
  margin: 0 0 10px;
}

.button-secondary, .button-danger {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 16px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.button-secondary { color: var(--text); }
.button-danger { color: var(--err); border-color: var(--err); }

.admin-subnav {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.admin-subnav a {
  padding: 8px 14px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  font-size: 0.9rem;
}
.admin-subnav a:hover { color: var(--text); }
.admin-subnav a.active { color: var(--accent); border-bottom-color: var(--accent); }

.table-scroll { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; }

td.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
td.actions form { margin: 0; }
td.actions button, td.actions a { padding: 6px 10px; font-size: 0.85rem; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.78rem;
}
.badge-ok { background: color-mix(in srgb, var(--ok) 18%, transparent); color: var(--ok); }
.badge-warn { background: color-mix(in srgb, var(--warn) 20%, transparent); color: var(--warn); }

.plain-list { list-style: none; margin: 0; padding: 0; }
.plain-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.plain-list li:last-child { border-bottom: none; }
.inline-action { margin: 0; }
.inline-action button { padding: 6px 10px; font-size: 0.85rem; }